{"id":4327,"date":"2022-12-24T09:06:39","date_gmt":"2022-12-24T02:06:39","guid":{"rendered":"https:\/\/dpm360.com\/?post_type=product&#038;p=4327"},"modified":"2022-12-24T11:33:31","modified_gmt":"2022-12-24T04:33:31","slug":"ong-cach-nhiet","status":"publish","type":"product","link":"https:\/\/dpm360.com\/san-pham\/ong-cach-nhiet\/","title":{"rendered":"\u1ed0ng c\u00e1ch nhi\u1ec7t"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_27 ez-toc-wrap-left counter-hierarchy counter-decimal ez-toc-grey\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">M\u1ee5c l\u1ee5c<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><label for=\"item\" aria-label=\"Table of Content\"><i class=\"ez-toc-glyphicon ez-toc-icon-toggle\"><\/i><\/label><input type=\"checkbox\" id=\"item\"><\/a><\/span><\/div>\n<nav><ul class=\"ez-toc-list ez-toc-list-level-1\"><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/dpm360.com\/san-pham\/ong-cach-nhiet\/#Ong_cach_nhiet\" title=\"\u1ed0ng c\u00e1ch nhi\u1ec7t\u00a0\">\u1ed0ng c\u00e1ch nhi\u1ec7t\u00a0<\/a><ul class=\"ez-toc-list-level-3\"><li class=\"ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/dpm360.com\/san-pham\/ong-cach-nhiet\/#Ong_cach_nhiet_PE-RT_2_II\" title=\"\u1ed0ng c\u00e1ch nhi\u1ec7t PE-RT 2 II\">\u1ed0ng c\u00e1ch nhi\u1ec7t PE-RT 2 II<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/dpm360.com\/san-pham\/ong-cach-nhiet\/#Gioi_thieu_san_pham_ong_cach_nhiet\" title=\"Gi\u1edbi thi\u1ec7u s\u1ea3n ph\u1ea9m \u1ed1ng c\u00e1ch nhi\u1ec7t\">Gi\u1edbi thi\u1ec7u s\u1ea3n ph\u1ea9m \u1ed1ng c\u00e1ch nhi\u1ec7t<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/dpm360.com\/san-pham\/ong-cach-nhiet\/#Dieu_chinh_cau_truc\" title=\"\u0110i\u1ec1u ch\u1ec9nh c\u1ea5u tr\u00fac\u00a0\">\u0110i\u1ec1u ch\u1ec9nh c\u1ea5u tr\u00fac\u00a0<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/dpm360.com\/san-pham\/ong-cach-nhiet\/#Dac_diem_hieu_suat\" title=\"\u0110\u1eb7c \u0111i\u1ec3m hi\u1ec7u su\u1ea5t:\">\u0110\u1eb7c \u0111i\u1ec3m hi\u1ec7u su\u1ea5t:<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Ong_cach_nhiet\"><\/span><span style=\"color: #008000; font-size: 12pt;\"><em><strong>\u1ed0ng c\u00e1ch nhi\u1ec7t\u00a0<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-size: 12pt;\">\u1ed0ng c\u00e1ch nhi\u1ec7t l\u00e0 t\u00ean vi\u1ebft t\u1eaft c\u1ee7a \u1ed1ng c\u00e1ch nhi\u1ec7t, \u1ed1ng b\u1ea3o qu\u1ea3n nhi\u1ec7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 v\u1eadn chuy\u1ec3n ch\u1ea5t l\u1ecfng, kh\u00ed v\u00e0 c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n kh\u00e1c. \u1ed0ng c\u00e1ch nhi\u1ec7t ph\u00f9 h\u1ee3p \u0111\u1ec3 v\u1eadn chuy\u1ec3n c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n kh\u00e1c nhau trong kho\u1ea3ng -50 \u00b0 C-150 \u00b0 C. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong h\u1ec7 th\u1ed1ng s\u01b0\u1edfi trung t\u00e2m, l\u00e0m m\u00e1t v\u00e0 v\u1eadn chuy\u1ec3n d\u1ea7u n\u00f3ng, c\u0169ng nh\u01b0 c\u00e1c d\u1ef1 \u00e1n b\u1ea3o qu\u1ea3n nhi\u1ec7t v\u00e0 b\u1ea3o qu\u1ea3n l\u1ea1nh trong ph\u00f2ng \u1ea5m, kho l\u1ea1nh, m\u1ecf than, d\u1ea7u kh\u00ed v\u00e0 c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t. B\u00e0i vi\u1ebft tham kh\u1ea3o th\u00eam v\u1ec1 <span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/dpm360.com\/san-pham\/ong-ruot-ga-loi-thep\/\">\u1ed0ng ru\u1ed9t g\u00e0 l\u00f5i th\u00e9p<\/a><\/span><\/span><\/p>\n<figure id=\"attachment_4330\" aria-describedby=\"caption-attachment-4330\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"wp-image-4330 size-medium\" src=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/Ong-cach-nhiet-PE-RT-2-300x300.jpg\" alt=\"\u1ed0ng c\u00e1ch nhi\u1ec7t PE RT 2\" width=\"300\" height=\"300\" srcset=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/Ong-cach-nhiet-PE-RT-2-300x300.jpg 300w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/Ong-cach-nhiet-PE-RT-2-150x150.jpg 150w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/Ong-cach-nhiet-PE-RT-2-100x100.jpg 100w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/Ong-cach-nhiet-PE-RT-2.jpg 563w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-4330\" class=\"wp-caption-text\"><span style=\"font-size: 12pt;\">\u1ed0ng c\u00e1ch nhi\u1ec7t PE RT 2<\/span><\/figcaption><\/figure>\n<p><span style=\"font-size: 12pt;\"><em><strong>Ph\u00e2n lo\u1ea1i c\u1ea5u tr\u00fac<\/strong><\/em><\/span><\/p>\n<p><span style=\"font-size: 12pt;\">C\u1ea5u tr\u00fac c\u00e1ch nhi\u1ec7t \u1ed1ng c\u00e1ch nhi\u1ec7t composite b\u1eb1ng th\u00e9p b\u1ecdc th\u00e9p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p tr\u01b0\u1ee3t kh\u00e1c nhau:<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">1. Lo\u1ea1i tr\u01b0\u1ee3t b\u00ean trong: c\u1ea5u tr\u00fac c\u00e1ch nhi\u1ec7t bao g\u1ed3m \u1ed1ng th\u00e9p l\u00e0m vi\u1ec7c, nh\u00f4m silicat, l\u1edbp gi\u1ea3m l\u1ef1c c\u1ea3n, canxi silicat vi x\u1ed1p, l\u1edbp c\u00e1ch nhi\u1ec7t, \u0111ai th\u00e9p bu\u1ed9c b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9, l\u1edbp ph\u1ea3n x\u1ea1 l\u00e1 nh\u00f4m, l\u1edbp c\u00e1ch nhi\u1ec7t polyurethane, \u1ed1ng th\u00e9p b\u00ean ngo\u00e0i, l\u1edbp ngo\u00e0i th\u00e0nh ph\u1ea7n l\u1edbp ch\u1ed1ng \u0103n m\u00f2n. \u1ed0ng th\u00e9p c\u00e1ch nhi\u1ec7t tr\u01b0\u1ee3t b\u00ean trong bao g\u1ed3m \u1ed1ng th\u00e9p \u0111\u1ec3 v\u1eadn chuy\u1ec3n trung b\u00ecnh + silicat composite ho\u1eb7c canxi silicat vi x\u1ed1p + b\u1ecdt polyurethane c\u1ee9ng + \u1ed1ng th\u00e9p b\u00ean ngo\u00e0i + c\u1ea5u tr\u00fac l\u1edbp b\u1ea3o v\u1ec7 ch\u1ed1ng \u0103n m\u00f2n v\u1ecf th\u00e9p th\u1ee7y tinh. C\u00f4ng ngh\u1ec7 x\u1eed l\u00fd c\u00e1ch nhi\u1ec7t c\u1ee7a c\u00e1c ph\u1ee5 ki\u1ec7n \u0111\u01b0\u1eddng \u1ed1ng kh\u00e1c nhau \u0111\u00e3 ho\u00e0n thi\u1ec7n v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng \u0111\u00e1ng tin c\u1eady.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">2. Lo\u1ea1i tr\u01b0\u1ee3t b\u00ean ngo\u00e0i: c\u1ea5u tr\u00fac c\u00e1ch nhi\u1ec7t bao g\u1ed3m \u1ed1ng th\u00e9p l\u00e0m vi\u1ec7c, l\u1edbp c\u00e1ch nhi\u1ec7t b\u00f4ng th\u1ee7y tinh, l\u1edbp ph\u1ea3n x\u1ea1 l\u00e1 nh\u00f4m, \u0111ai th\u00e9p bu\u1ed9c b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9, khung d\u1eabn h\u01b0\u1edbng tr\u01b0\u1ee3t, l\u1edbp c\u00e1ch nhi\u1ec7t kh\u00f4ng kh\u00ed, \u1ed1ng th\u00e9p b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i v\u00e0 l\u1edbp ch\u1ed1ng b\u00ean ngo\u00e0i l\u1edbp \u0103n m\u00f2n.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u1ed0ng c\u00e1ch nhi\u1ec7t polyurethane \u0111\u01b0\u1ee3c chia th\u00e0nh ba l\u1edbp t\u1eeb trong ra ngo\u00e0i: l\u1edbp th\u1ee9 nh\u1ea5t: l\u1edbp \u1ed1ng th\u00e9p l\u00e0m vi\u1ec7c<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Theo thi\u1ebft k\u1ebf v\u00e0 y\u00eau c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng, \u1ed1ng th\u00e9p li\u1ec1n m\u1ea1ch, \u1ed1ng th\u00e9p xo\u1eafn \u1ed1c v\u00e0 \u1ed1ng th\u00e9p \u0111\u01b0\u1eddng may th\u1eb3ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. Sau khi b\u1ec1 m\u1eb7t c\u1ee7a \u1ed1ng th\u00e9p \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng quy tr\u00ecnh t\u1ea9y g\u1ec9 b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p phun bi ti\u00ean ti\u1ebfn, c\u1ea5p \u0111\u1ed9 t\u1ea9y g\u1ec9 c\u1ee7a \u1ed1ng th\u00e9p c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u1ebfn m\u1ee9c Sa2 trong ti\u00eau chu\u1ea9n GB8923-1988 v\u00e0 \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t c\u00f3 th\u1ec3 \u0111\u1ea1t R=12,5 micron trong GB6060 5-88 ti\u00eau chu\u1ea9n.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">L\u1edbp th\u1ee9 hai: L\u1edbp c\u00e1ch nhi\u1ec7t Polyurethane: N\u00f3 \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh b\u1eb1ng c\u00e1ch b\u01a1m dung d\u1ecbch g\u1ed1c b\u1ecdt polyurethane c\u1ee9ng v\u00e0o khoang \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh gi\u1eefa \u1ed1ng th\u00e9p v\u00e0 v\u1ecf b\u1ecdc b\u00ean ngo\u00e0i b\u1eb1ng m\u00e1y t\u1ea1o b\u1ecdt \u00e1p su\u1ea5t cao c\u00f9ng m\u1ed9t l\u00fac, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 &#8220;t\u1ea1o b\u1ecdt t\u1eeb \u1ed1ng trong \u1ed1ng&#8221;.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">L\u1edbp th\u1ee9 ba: l\u1edbp b\u1ea3o v\u1ec7 polyetylen m\u1eadt \u0111\u1ed9 cao: \u1ed0ng nh\u1ef1a polyetylen m\u00e0u \u0111en ho\u1eb7c m\u00e0u v\u00e0ng \u0111\u00fac s\u1eb5n c\u00f3 \u0111\u1ed9 d\u00e0y th\u00e0nh nh\u1ea5t \u0111\u1ecbnh. M\u1ed9t trong nh\u1eefng ch\u1ee9c n\u0103ng c\u1ee7a n\u00f3 l\u00e0 b\u1ea3o v\u1ec7 l\u1edbp c\u00e1ch nhi\u1ec7t polyurethane kh\u1ecfi b\u1ecb h\u01b0 h\u1ea1i b\u1edfi c\u00e1c v\u1eadt c\u1ee9ng c\u01a1 h\u1ecdc, v\u00e0 ch\u1ee9c n\u0103ng c\u00f2n l\u1ea1i l\u00e0 ch\u1ed1ng \u0103n m\u00f2n v\u00e0 ch\u1ed1ng th\u1ea5m n\u01b0\u1edbc.<\/span><\/p>\n<figure id=\"attachment_4331\" aria-describedby=\"caption-attachment-4331\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"wp-image-4331 size-medium\" src=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-cach-nhiet-composite-300x300.jpg\" alt=\"\u1ed0ng c\u00e1ch nhi\u1ec7t Composite l\u00f5i th\u00e9p\" width=\"300\" height=\"300\" srcset=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-cach-nhiet-composite-300x300.jpg 300w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-cach-nhiet-composite-150x150.jpg 150w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-cach-nhiet-composite-768x768.jpg 768w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-cach-nhiet-composite-100x100.jpg 100w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-cach-nhiet-composite-600x600.jpg 600w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-cach-nhiet-composite.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-4331\" class=\"wp-caption-text\"><span style=\"font-size: 12pt;\">\u1ed0ng c\u00e1ch nhi\u1ec7t Composite l\u00f5i th\u00e9p<\/span><\/figcaption><\/figure>\n<p><span style=\"font-size: 12pt;\"><em><strong>M\u1ee5c hi\u1ec7u su\u1ea5t<\/strong><\/em><\/span><\/p>\n<p><span style=\"font-size: 12pt;\">C\u1ea5u tr\u00fac \u1ed1ng c\u00e1ch nhi\u1ec7t<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u1ed0ng c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp \u0111\u00fac s\u1eb5n \u1edf nhi\u1ec7t \u0111\u1ed9 cao ch\u1ee7 y\u1ebfu bao g\u1ed3m b\u1ed1n ph\u1ea7n.<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\">(1) \u1ed0ng th\u00e9p l\u00e0m vi\u1ec7c: Theo y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt c\u1ee7a ph\u01b0\u01a1ng ti\u1ec7n v\u1eadn chuy\u1ec3n, \u1ed1ng th\u00e9p c\u00f3 \u0111\u01b0\u1eddng n\u1ed1i, \u1ed1ng th\u00e9p li\u1ec1n m\u1ea1ch v\u00e0 \u1ed1ng th\u00e9p h\u00e0n xo\u1eafn \u1ed1c h\u1ed3 quang ch\u00ecm hai m\u1eb7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u01b0\u01a1ng \u1ee9ng.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">(2) L\u1edbp c\u00e1ch nhi\u1ec7t: s\u1eed d\u1ee5ng b\u1ecdt polyurethane c\u1ee9ng.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">(3) L\u1edbp v\u1ecf b\u1ea3o v\u1ec7: polyetylen m\u1eadt \u0111\u1ed9 cao ho\u1eb7c s\u1ee3i th\u1ee7y tinh.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">(4) \u0110\u01b0\u1eddng b\u00e1o \u0111\u1ed9ng r\u00f2 r\u1ec9: Khi s\u1ea3n xu\u1ea5t \u1ed1ng c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp \u1edf nhi\u1ec7t \u0111\u1ed9 cao, \u0111\u01b0\u1eddng b\u00e1o \u0111\u1ed9ng \u0111\u01b0\u1ee3c ch\u00f4n trong l\u1edbp c\u00e1ch nhi\u1ec7t g\u1ea7n \u1ed1ng th\u00e9p, m\u1ed9t khi r\u00f2 r\u1ec9 x\u1ea3y ra \u1edf \u0111\u00e2u \u0111\u00f3 trong \u0111\u01b0\u1eddng \u1ed1ng, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n b\u1eb1ng thi\u1ebft b\u1ecb ph\u00e1t hi\u1ec7n \u0111\u1eb7c bi\u1ec7t thi\u1ebft b\u1ecb th\u00f4ng qua vi\u1ec7c d\u1eabn \u0111\u01b0\u1eddng b\u00e1o \u0111\u1ed9ng.B\u00e1o \u0111\u1ed9ng v\u00e0 hi\u1ec3n th\u1ecb ch\u00ednh x\u00e1c v\u1ecb tr\u00ed v\u00e0 m\u1ee9c \u0111\u1ed9 r\u00f2 r\u1ec9 n\u01b0\u1edbc, \u0111\u1ec3 th\u00f4ng b\u00e1o cho nh\u00e2n vi\u00ean b\u1ea3o tr\u00ec \u0111\u1ec3 nhanh ch\u00f3ng x\u1eed l\u00fd \u0111o\u1ea1n \u0111\u01b0\u1eddng \u1ed1ng b\u1ecb r\u00f2 r\u1ec9 v\u00e0 \u0111\u1ea3m b\u1ea3o m\u1ea1ng l\u01b0\u1edbi s\u01b0\u1edfi \u1ea5m ho\u1ea1t \u0111\u1ed9ng an to\u00e0n.<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_4332\" aria-describedby=\"caption-attachment-4332\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"wp-image-4332 size-medium\" src=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-chiu-nhiet-300x300.jpg\" alt=\"\u1ed0ng ch\u1ecbu nhi\u1ec7t\" width=\"300\" height=\"300\" srcset=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-chiu-nhiet-300x300.jpg 300w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-chiu-nhiet-150x150.jpg 150w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-chiu-nhiet-768x768.jpg 768w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-chiu-nhiet-100x100.jpg 100w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-chiu-nhiet-600x600.jpg 600w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-chiu-nhiet.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-4332\" class=\"wp-caption-text\"><span style=\"font-size: 12pt;\">\u1ed0ng ch\u1ecbu nhi\u1ec7t<\/span><\/figcaption><\/figure>\n<p><span style=\"font-size: 12pt;\"><em><strong>T\u00ednh n\u0103ng \u1ed1ng c\u00e1ch nhi\u1ec7t<\/strong><\/em><\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u1ed0ng c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp \u0111\u00fac s\u1eb5n \u1edf nhi\u1ec7t \u0111\u1ed9 cao &#8211; \u01b0u \u0111i\u1ec3m v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\">1. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n m\u1ea1nh v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ea5m n\u01b0\u1edbc v\u00e0 t\u1ed5ng chi ph\u00ed th\u1ea5p: Theo t\u00ednh to\u00e1n c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn li\u00ean quan, \u1ed1ng s\u01b0\u1edfi \u1ea5m hai \u1ed1ng n\u00f3i chung c\u00f3 th\u1ec3 gi\u1ea3m kho\u1ea3ng 25% chi ph\u00ed d\u1ef1 \u00e1n (s\u1eed d\u1ee5ng FRP l\u00e0m l\u1edbp b\u1ea3o v\u1ec7) v\u00e0 10% (s\u1eed d\u1ee5ng polyetylen m\u1eadt \u0111\u1ed9 cao l\u00e0m l\u1edbp b\u1ea3o v\u1ec7).<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">2. M\u1ea5t nhi\u1ec7t th\u1ea5p, ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng. M\u1ea5t nhi\u1ec7t ch\u1ec9 b\u1eb1ng 25% so v\u1edbi \u0111\u01b0\u1eddng \u1ed1ng truy\u1ec1n th\u1ed1ng: \u1ed0ng c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp, \u0111\u1ed9 d\u1eabn nhi\u1ec7t 0,022kcal\/mh\u2103, t\u1ef7 l\u1ec7 k\u1ef5 n\u01b0\u1edbc 0,03kg\/cm&amp;sup3.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">3. Tu\u1ed5i th\u1ecd d\u00e0i: Vi\u1ec7c l\u1eafp \u0111\u1eb7t v\u00e0 s\u1eed d\u1ee5ng \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 l\u00e0m cho tu\u1ed5i th\u1ecd c\u1ee7a m\u1ea1ng l\u01b0\u1edbi \u0111\u01b0\u1eddng \u1ed1ng \u0111\u1ea1t 30-50 n\u0103m v\u00e0 chi ph\u00ed b\u1ea3o tr\u00ec c\u1ef1c k\u1ef3 th\u1ea5p.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">4. Chi\u1ebfm \u00edt \u0111\u1ea5t h\u01a1n v\u00e0 x\u00e2y d\u1ef1ng nhanh h\u01a1n, c\u00f3 l\u1ee3i cho vi\u1ec7c b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng: N\u00f3 c\u00f3 th\u1ec3 gi\u1ea3m h\u01a1n 50% kh\u1ed1i l\u01b0\u1ee3ng \u0111\u00e0o \u0111\u1ea5t v\u00e0 gi\u1ea3m 90% kh\u1ed1i l\u01b0\u1ee3ng x\u00e2y d\u1ef1ng d\u00e2n d\u1ee5ng v\u00e0 b\u00ea t\u00f4ng<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt;\"><em><strong>Ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt \u1ed1ng c\u00e1ch nhi\u1ec7t<\/strong><\/em><\/span><\/p>\n<table style=\"border-collapse: collapse; width: 100%; height: 208px;\">\n<tbody>\n<tr style=\"height: 26px;\">\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">Hi\u1ec7u su\u1ea5t k\u1ef9 thu\u1eadt<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">\u0111\u01a1n v\u1ecb<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">C\u00f4ng ngh\u1ec7<\/span><\/td>\n<\/tr>\n<tr style=\"height: 26px;\">\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">dung t\u00edch<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">Kg\/m3<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">45-60<\/span><\/td>\n<\/tr>\n<tr style=\"height: 26px;\">\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">D\u1eabn nhi\u1ec7t<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">W\/m.k<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">0.016-0.024<\/span><\/td>\n<\/tr>\n<tr style=\"height: 26px;\">\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">\u2103<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">-90-+120<\/span><\/td>\n<\/tr>\n<tr style=\"height: 26px;\">\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">t\u1ef7 l\u1ec7 \u0111\u00f3ng c\u1eeda<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">%<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">\u226597<\/span><\/td>\n<\/tr>\n<tr style=\"height: 26px;\">\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">h\u1ea5p th\u1ee5 n\u01b0\u1edbc<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">Kg\/m2<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">\u22640.2<\/span><\/td>\n<\/tr>\n<tr style=\"height: 26px;\">\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">Ch\u1ec9 s\u1ed1 oxy<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">h<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">\u226526<\/span><\/td>\n<\/tr>\n<tr style=\"height: 26px;\">\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">C\u01b0\u1eddng \u0111\u1ed9 n\u00e9n<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">Mpa<\/span><\/td>\n<td style=\"width: 33.3333%; height: 26px;\"><span style=\"font-size: 12pt;\">\u2265200<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-size: 12pt;\">N\u00f3 th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c v\u1eadt li\u1ec7u \u1ed1ng c\u00e1ch nhi\u1ec7t kh\u00e1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u01b0\u1edbc \u0111\u00e2y v\u00e0 hi\u1ec7u qu\u1ea3 c\u00e1ch nhi\u1ec7t t\u0103ng l\u00ean 4 ~ 9 l\u1ea7n. H\u01a1n n\u1eefa, \u0111\u1ed9 h\u00fat n\u01b0\u1edbc c\u1ee7a n\u00f3 r\u1ea5t th\u1ea5p, kho\u1ea3ng 0,2kg\/m2. L\u00fd do cho s\u1ef1 h\u1ea5p th\u1ee5 n\u01b0\u1edbc th\u1ea5p l\u00e0 t\u1ef7 l\u1ec7 \u00f4 k\u00edn c\u1ee7a b\u1ecdt polyurethane cao t\u1edbi kho\u1ea3ng 92%. \u0110\u1ed9 d\u1eabn nhi\u1ec7t th\u1ea5p v\u00e0 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc th\u1ea5p, k\u1ebft h\u1ee3p v\u1edbi l\u1edbp c\u00e1ch nhi\u1ec7t v\u00e0 l\u1edbp v\u1ecf b\u1ea3o v\u1ec7 b\u1eb1ng polyetylen ho\u1eb7c FRP m\u1eadt \u0111\u1ed9 cao v\u1edbi kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ea5m n\u01b0\u1edbc b\u00ean ngo\u00e0i t\u1ed1t, \u0111\u00e3 thay \u0111\u1ed5i t\u00ecnh tr\u1ea1ng &#8220;m\u1eb7c \u00e1o kho\u00e1c b\u00f4ng \u01b0\u1edbt&#8221; cho c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng s\u01b0\u1edfi \u1ea5m \u0111\u1eb7t trong r\u00e3nh truy\u1ec1n th\u1ed1ng v\u00e0 gi\u1ea3m \u0111\u00e1ng k\u1ec3 chi ph\u00ed c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng s\u01b0\u1edfi \u1ea5m. T\u1ed5n th\u1ea5t nhi\u1ec7t t\u1ed5ng th\u1ec3, t\u1ed5n th\u1ea5t nhi\u1ec7t c\u1ee7a m\u1ea1ng l\u01b0\u1edbi s\u01b0\u1edfi \u1ea5m l\u00e0 2%, th\u1ea5p h\u01a1n y\u00eau c\u1ea7u ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf l\u00e0 10%. Ch\u1ed1ng \u0103n m\u00f2n, hi\u1ec7u su\u1ea5t c\u00e1ch nhi\u1ec7t t\u1ed1t, tu\u1ed5i th\u1ecd cao.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u1ed0ng b\u1ea3o qu\u1ea3n nhi\u1ec7t c\u00f3 t\u00e1c d\u1ee5ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t do l\u1edbp c\u00e1ch nhi\u1ec7t b\u1eb1ng b\u1ecdt c\u1ee9ng polyurethane \u0111\u01b0\u1ee3c li\u00ean k\u1ebft ch\u1eb7t ch\u1ebd v\u1edbi l\u1edbp v\u1ecf ngo\u00e0i c\u1ee7a \u1ed1ng th\u00e9p, ng\u0103n c\u00e1ch s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a kh\u00f4ng kh\u00ed v\u00e0 n\u01b0\u1edbc. \u0110\u1ed3ng th\u1eddi, c\u00e1c t\u1ebf b\u00e0o b\u1ecdt c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c \u0111\u00f3ng l\u1ea1i v\u00e0 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc c\u1ee7a n\u00f3 r\u1ea5t nh\u1ecf. C\u1ea3 v\u1ecf polyetylen m\u1eadt \u0111\u1ed9 cao v\u00e0 v\u1ecf nh\u1ef1a gia c\u1ed1 s\u1ee3i th\u1ee7y tinh \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, c\u00e1ch nhi\u1ec7t v\u00e0 c\u01a1 h\u1ecdc t\u1ed1t. Do \u0111\u00f3, l\u1edbp v\u1ecf b\u00ean ngo\u00e0i c\u1ee7a \u1ed1ng th\u00e9p l\u00e0m vi\u1ec7c kh\u00f3 b\u1ecb \u0103n m\u00f2n b\u1edfi kh\u00f4ng kh\u00ed v\u00e0 n\u01b0\u1edbc b\u00ean ngo\u00e0i. Mi\u1ec5n l\u00e0 ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc b\u00ean trong \u0111\u01b0\u1eddng \u1ed1ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd t\u1ed1t, theo d\u1eef li\u1ec7u n\u01b0\u1edbc ngo\u00e0i, tu\u1ed5i th\u1ecd c\u1ee7a \u1ed1ng c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp \u0111\u00fac s\u1eb5n \u1edf nhi\u1ec7t \u0111\u1ed9 cao c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi h\u01a1n 50 n\u0103m, d\u00e0i h\u01a1n 3 \u0111\u1ebfn 4 l\u1ea7n so v\u1edbi r\u00e3nh truy\u1ec1n th\u1ed1ng. \u0111\u1eb7t v\u00e0 \u0111\u1eb7t tr\u00ean cao.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">4. Chi\u1ebfm \u0111\u1ea5t nh\u1ecf, x\u00e2y d\u1ef1ng nhanh v\u00e0 b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng thu\u1eadn l\u1ee3i.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">C\u00e1c \u0111\u01b0\u1eddng \u1ed1ng s\u01b0\u1edfi \u1ea5m \u0111\u01b0\u1ee3c ch\u00f4n tr\u1ef1c ti\u1ebfp kh\u00f4ng c\u1ea7n ph\u1ea3i x\u00e2y d\u1ef1ng c\u00e1c r\u00e3nh l\u1edbn m\u00e0 ch\u1ec9 c\u1ea7n ch\u00f4n c\u00e1c \u1ed1ng c\u00e1ch nhi\u1ec7t d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t, do \u0111\u00f3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 vi\u1ec7c chi\u1ebfm \u0111\u1ea5t c\u1ee7a d\u1ef1 \u00e1n, gi\u1ea3m h\u01a1n 50% l\u01b0\u1ee3ng \u0111\u00e0o \u0111\u1ea5t v\u00e0 gi\u1ea3m l\u01b0\u1ee3ng d\u00e2n d\u1ee5ng x\u00e2y v\u00e0 b\u00ea t\u00f4ng b\u1eb1ng 90%. \u0110\u1ed3ng th\u1eddi, vi\u1ec7c x\u1eed l\u00fd \u1ed1ng c\u00e1ch nhi\u1ec7t v\u00e0 \u0111\u00e0o r\u00e3nh t\u1ea1i ch\u1ed7 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh song song, ch\u1ec9 c\u1ea7n n\u1ed1i t\u1ea1i ch\u1ed7, c\u00f3 th\u1ec3 r\u00fat ng\u1eafn h\u01a1n 50% th\u1eddi gian thi c\u00f4ng.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">H\u1ec7 th\u1ed1ng an to\u00e0n \u0111\u01b0\u1eddng \u1ed1ng c\u00e1ch nhi\u1ec7t<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">T\u1ea5t c\u1ea3 c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u00ean ngo\u00e0i Vi\u1ec7t Nam \u0111\u1ec1u \u0111\u01b0\u1ee3c trang b\u1ecb \u0111\u01b0\u1eddng b\u00e1o \u0111\u1ed9ng r\u00f2 r\u1ec9, m\u1ed9t khi r\u00f2 r\u1ec9 x\u1ea3y ra \u1edf \u0111\u00e2u \u0111\u00f3 trong \u0111\u01b0\u1eddng \u1ed1ng, th\u00f4ng qua s\u1ef1 d\u1eabn truy\u1ec1n c\u1ee7a \u0111\u01b0\u1eddng b\u00e1o \u0111\u1ed9ng, c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c v\u1ecb tr\u00ed v\u00e0 v\u1ecb tr\u00ed th\u1ea5m n\u01b0\u1edbc v\u00e0 r\u00f2 r\u1ec9 c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng c\u00e1ch nhi\u1ec7t. \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb tr\u00ean c\u00f4ng c\u1ee5 ph\u00e1t hi\u1ec7n \u0111\u1eb7c bi\u1ec7t. K\u00edch th\u01b0\u1edbc c\u1ee7a m\u1ee9c \u0111\u1ed9 r\u00f2 r\u1ec9, \u0111\u1ec3 th\u00f4ng b\u00e1o cho nh\u00e2n vi\u00ean ki\u1ec3m tra r\u00f2 r\u1ec9 \u0111\u1ec3 nhanh ch\u00f3ng x\u1eed l\u00fd \u0111o\u1ea1n \u1ed1ng b\u1ecb r\u00f2 r\u1ec9 v\u00e0 \u0111\u1ea3m b\u1ea3o m\u1ea1ng l\u01b0\u1edbi \u0111\u01b0\u1eddng \u1ed1ng s\u01b0\u1edfi \u1ea5m ho\u1ea1t \u0111\u1ed9ng an to\u00e0n. C\u00f3 m\u1ed9t \u0111\u01b0\u1eddng b\u00e1o \u0111\u1ed9ng r\u00f2 r\u1ec9 \u1edf cu\u1ed1i c\u00e1c \u1ed1ng c\u00e1ch nhi\u1ec7t \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t trong n\u01b0\u1edbc v\u00e0 kho\u1ea3ng tr\u1ed1ng n\u00e0y c\u1ea7n \u0111\u01b0\u1ee3c l\u1ea5p \u0111\u1ea7y.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">N\u00f3i t\u00f3m l\u1ea1i, \u1ed1ng c\u00e1ch nhi\u1ec7t kh\u00f4ng ch\u1ec9 c\u00f3 c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn v\u00e0 hi\u1ec7u su\u1ea5t th\u1ef1c t\u1ebf kh\u00f4ng th\u1ec3 so s\u00e1nh v\u1edbi c\u00e1c r\u00e3nh truy\u1ec1n th\u1ed1ng v\u00e0 \u0111\u01b0\u1eddng \u1ed1ng \u0111\u1eb7t tr\u00ean cao, m\u00e0 c\u00f2n mang l\u1ea1i l\u1ee3i \u00edch kinh t\u1ebf v\u00e0 x\u00e3 h\u1ed9i \u0111\u00e1ng k\u1ec3, \u0111\u1ed3ng th\u1eddi c\u0169ng l\u00e0 m\u1ed9t bi\u1ec7n ph\u00e1p hi\u1ec7u qu\u1ea3 \u0111\u1ec3 s\u01b0\u1edfi \u1ea5m v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng. Vi\u1ec7c \u00e1p d\u1ee5ng c\u00f4ng ngh\u1ec7 \u0111\u01b0\u1eddng \u1ed1ng s\u01b0\u1edfi \u1ea5m ch\u00f4n tr\u1ef1c ti\u1ebfp \u0111\u00e1nh d\u1ea5u r\u1eb1ng s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 \u0111\u01b0\u1eddng \u1ed1ng s\u01b0\u1edfi \u1ea5m c\u1ee7a Trung Qu\u1ed1c \u0111\u00e3 b\u01b0\u1edbc v\u00e0o m\u1ed9t \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u m\u1edbi. V\u1edbi s\u1ef1 c\u1ea3i ti\u1ebfn v\u00e0 ph\u00e1t tri\u1ec3n h\u01a1n n\u1eefa c\u1ee7a c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn n\u00e0y, b\u1eaft bu\u1ed9c ph\u1ea3i ch\u00f4n tr\u1ef1c ti\u1ebfp c\u00e1c \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn nhi\u1ec7t thay v\u00ec \u0111\u00e0o r\u00e3nh v\u00e0 tr\u00ean cao.<\/span><\/p>\n<figure id=\"attachment_4333\" aria-describedby=\"caption-attachment-4333\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"wp-image-4333 size-medium\" src=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-chiu-nhiet-composite-300x300.jpg\" alt=\"\u1ed0ng ch\u1ecbu nhi\u1ec7t Composite\" width=\"300\" height=\"300\" srcset=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-chiu-nhiet-composite-300x300.jpg 300w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-chiu-nhiet-composite-150x150.jpg 150w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-chiu-nhiet-composite-768x768.jpg 768w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-chiu-nhiet-composite-100x100.jpg 100w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-chiu-nhiet-composite-600x600.jpg 600w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-chiu-nhiet-composite.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-4333\" class=\"wp-caption-text\"><span style=\"font-size: 12pt;\">\u1ed0ng ch\u1ecbu nhi\u1ec7t Composite<\/span><\/figcaption><\/figure>\n<p><span style=\"font-size: 12pt;\"><em><strong>T\u00ecnh tr\u1ea1ng ph\u00e1t tri\u1ec3n<\/strong><\/em><\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u1ed0ng c\u00e1ch nhi\u1ec7t l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng, vi\u1ec7c ph\u00e1t tri\u1ec3n v\u00e0 \u1ee9ng d\u1ee5ng \u1ed1ng c\u00e1ch nhi\u1ec7t ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c c\u00e1c qu\u1ed1c gia tr\u00ean th\u1ebf gi\u1edbi ch\u00fa \u00fd. Sau nh\u1eefng n\u0103m 1970, n\u01b0\u1edbc ngo\u00e0i th\u01b0\u1eddng ch\u00fa \u00fd \u0111\u1ebfn vi\u1ec7c s\u1ea3n xu\u1ea5t v\u00e0 \u1ee9ng d\u1ee5ng \u1ed1ng c\u00e1ch nhi\u1ec7t, c\u1ed1 g\u1eafng gi\u1ea3m \u0111\u00e1ng k\u1ec3 m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng, t\u1eeb \u0111\u00f3 gi\u1ea3m \u00f4 nhi\u1ec5m m\u00f4i tr\u01b0\u1eddng v\u00e0 hi\u1ec7u \u1ee9ng nh\u00e0 k\u00ednh. Ng\u00e0nh c\u00f4ng nghi\u1ec7p c\u00e1ch nhi\u1ec7t n\u01b0\u1edbc ngo\u00e0i c\u00f3 m\u1ed9t l\u1ecbch s\u1eed l\u00e2u d\u00e0i v\u00e0 c\u00e1c v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t m\u1edbi li\u00ean t\u1ee5c xu\u1ea5t hi\u1ec7n. <\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Tr\u01b0\u1edbc n\u0103m 1980, s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a \u1ed1ng c\u00e1ch nhi\u1ec7t \u1edf n\u01b0\u1edbc t\u00f4i r\u1ea5t ch\u1eadm v\u00e0 m\u1ed9t s\u1ed1 nh\u00e0 m\u00e1y c\u00e1ch nhi\u1ec7t ch\u1ec9 c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf \u1ed1ng c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t, tuy nhi\u00ean, sau h\u01a1n 30 n\u0103m l\u00e0m vi\u1ec7c ch\u0103m ch\u1ec9 trong ng\u00e0nh c\u00e1ch nhi\u1ec7t c\u1ee7a Vi\u1ec7t Nam, \u0111\u1eb7c bi\u1ec7t l\u00e0 Sau g\u1ea7n 10 n\u0103m ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng, nhi\u1ec1u S\u1ea3n ph\u1ea9m \u0111\u00e3 ph\u00e1t tri\u1ec3n t\u1eeb \u0111\u1ea7u, t\u1eeb \u0111\u01a1n l\u1ebb \u0111\u1ebfn \u0111a d\u1ea1ng, t\u1eeb ch\u1ea5t l\u01b0\u1ee3ng th\u1ea5p \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang ng\u00e0y c\u00e0ng tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn. V\u1eadt li\u1ec7u polyurethane hi\u1ec7n l\u00e0 v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t tr\u00ean th\u1ebf gi\u1edbi. Polyurethane c\u1ee9ng c\u00f3 nhi\u1ec1u \u0111\u1eb7c t\u00ednh tuy\u1ec7t v\u1eddi v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong l\u0129nh v\u1ef1c c\u00e1ch nhi\u1ec7t \u1edf c\u00e1c n\u01b0\u1edbc ch\u00e2u \u00c2u v\u00e0 ch\u00e2u M\u1ef9. Kho\u1ea3ng 49% v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t \u1edf c\u00e1c n\u01b0\u1edbc ph\u00e1t tri\u1ec3n nh\u01b0 Ch\u00e2u \u00c2u v\u00e0 Hoa K\u1ef3 l\u00e0 v\u1eadt li\u1ec7u polyurethane, trong khi \u1edf Vi\u1ec7t Nam, t\u1ef7 l\u1ec7 n\u00e0y v\u1eabn ch\u01b0a \u0111\u1ebfn 20%. Do \u0111\u00f3, v\u1eabn c\u00f2n r\u1ea5t nhi\u1ec1u c\u01a1 h\u1ed9i \u0111\u1ec3 ph\u00e1t tri\u1ec3n \u1ed1ng c\u00e1ch nhi\u1ec7t b\u1eb1ng v\u1eadt li\u1ec7u polyurethane \u1edf Vi\u1ec7t Nam.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ong_cach_nhiet_PE-RT_2_II\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>\u1ed0ng c\u00e1ch nhi\u1ec7t PE-RT 2 II<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">\u1ed0ng c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp \u0111\u00fac s\u1eb5n lo\u1ea1i PE-RT 2 II-\u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i b\u1eb1ng polyetylen m\u1eadt \u0111\u1ed9 cao B\u1ecdt polyurethane \u0111\u00fac s\u1eb5n nh\u1ef1a composite c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp (g\u1ecdi t\u1eaft l\u00e0 \u1ed1ng nh\u1ef1a composite c\u00e1ch nhi\u1ec7t PE-RT II), bao g\u1ed3m cao- \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i b\u1eb1ng polyetylen m\u1eadt \u0111\u1ed9, polyurethane L\u1edbp c\u00e1ch nhi\u1ec7t b\u1eb1ng nh\u1ef1a x\u1ed1p v\u00e0 \u1ed1ng l\u00e0m vi\u1ec7c \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p ch\u1eb7t ch\u1ebd v\u1edbi nhau.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u1ed0ng c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp \u0111\u00fac s\u1eb5n lo\u1ea1i PE-RT II t\u00ean ti\u1ebfng Trung bao g\u1ed3m \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i b\u1eb1ng polyetylen m\u1eadt \u0111\u1ed9 cao, l\u1edbp c\u00e1ch nhi\u1ec7t b\u1eb1ng b\u1ecdt polyurethane v\u00e0 \u1ed1ng l\u00e0m vi\u1ec7c.<\/span><\/p>\n<figure id=\"attachment_4329\" aria-describedby=\"caption-attachment-4329\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"wp-image-4329 size-medium\" src=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-cach-nhiet-300x300.jpg\" alt=\"\u1ed0ng c\u00e1ch nhi\u1ec7t\" width=\"300\" height=\"300\" srcset=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-cach-nhiet-300x300.jpg 300w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-cach-nhiet-150x150.jpg 150w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-cach-nhiet-768x768.jpg 768w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-cach-nhiet-100x100.jpg 100w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-cach-nhiet-600x600.jpg 600w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/ong-cach-nhiet.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-4329\" class=\"wp-caption-text\"><span style=\"font-size: 12pt;\">\u1ed0ng c\u00e1ch nhi\u1ec7t<\/span><\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Gioi_thieu_san_pham_ong_cach_nhiet\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>Gi\u1edbi thi\u1ec7u s\u1ea3n ph\u1ea9m \u1ed1ng c\u00e1ch nhi\u1ec7t<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">Ti\u00eau chu\u1ea9n qu\u1ed1c gia PE-RT \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng c\u00f3 tham kh\u1ea3o c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 &#8220;H\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng Polyetylen ch\u1ecbu nhi\u1ec7t (PE-RT) cho n\u01b0\u1edbc n\u00f3ng v\u00e0 l\u1ea1nh&#8221; c\u1ee7a ISO v\u00e0 c\u00e1c ph\u1ea7n li\u00ean quan c\u1ee7a ti\u00eau chu\u1ea9n qu\u1ed1c gia \u00c1o, \u0111\u1ed3ng th\u1eddi xem x\u00e9t t\u00ecnh h\u00ecnh s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf trong n\u01b0\u1edbc v\u00e0 n\u0103ng l\u1ef1c k\u1ef9 thu\u1eadt.V\u00ec v\u1eady, n\u00f3 c\u00f3 m\u1ed9t m\u1ee9c \u0111\u1ed9 ti\u1ebfn b\u1ed9 nh\u1ea5t \u0111\u1ecbnh. Vi\u1ec7c th\u1ef1c hi\u1ec7n ti\u00eau chu\u1ea9n m\u1edbi c\u00f3 t\u00e1c \u0111\u1ed9ng t\u00edch c\u1ef1c \u0111\u1ebfn y\u00eau c\u1ea7u ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n l\u00e0nh m\u1ea1nh c\u1ee7a ng\u00e0nh.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, vi\u1ec7c \u1ee9ng d\u1ee5ng \u1ed1ng PE-RT c\u1ee7a n\u01b0\u1edbc t\u00f4i trong l\u0129nh v\u1ef1c \u1ed1ng n\u01b0\u1edbc n\u00f3ng v\u00e0 l\u1ea1nh trong c\u00e1c t\u00f2a nh\u00e0 \u0111\u00e3 ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng v\u00e0 nguy\u00ean li\u1ec7u th\u00f4 c\u0169ng \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n h\u01a1n n\u1eefa. N\u0103m 2002, ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p &#8220;H\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng Polyetylen ch\u1ecbu nhi\u1ec7t (PE-RT) cho n\u01b0\u1edbc n\u00f3ng v\u00e0 l\u1ea1nh&#8221; \u0111\u00e3 \u0111\u01b0\u1ee3c ban h\u00e0nh, nh\u01b0ng v\u00ec ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p t\u1ea1i th\u1eddi \u0111i\u1ec3m \u0111\u00f3 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn ti\u00eau chu\u1ea9n &#8220;Polyetylen ch\u1ecbu nhi\u1ec7t (PE-RT)&#8221; c\u1ee7a \u0110\u1ee9c. \u1ed0ng &#8211; Y\u00eau c\u1ea7u ch\u1ea5t l\u01b0\u1ee3ng chung &#8221; v\u00e0 &#8220;\u1ed0ng Polyetylen ch\u1ecbu nhi\u1ec7t (PE-RT) &#8211; K\u00edch th\u01b0\u1edbc&#8221;, c\u1ea3 hai ti\u00eau chu\u1ea9n \u0111\u1ec1u \u0111\u01b0\u1ee3c bi\u00ean so\u1ea1n d\u1ef1a tr\u00ean c\u00e1c ch\u1ec9 s\u1ed1 hi\u1ec7u su\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u PE-RT lo\u1ea1i I. V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a v\u1eadt li\u1ec7u, ch\u1ec9 s\u1ed1 hi\u1ec7u su\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u PE-RT lo\u1ea1i II cao h\u01a1n nhi\u1ec1u so v\u1edbi v\u1eadt li\u1ec7u th\u1ebf h\u1ec7 th\u1ee9 nh\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf ISO22391 &#8220;H\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng polyetylen (PE-RT) ch\u1ecbu nhi\u1ec7t cho n\u01b0\u1edbc n\u00f3ng v\u00e0 l\u1ea1nh &#8221; c\u0169ng \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eeda \u0111\u1ed5i v\u00e0 c\u1eadp nh\u1eadt, b\u1ed5 sung c\u00e1c y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi \u1ed1ng PE-RT lo\u1ea1i II.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u1ed0ng l\u00e0m vi\u1ec7c PE-RT II c\u00f3 th\u1ec3 v\u1eadn chuy\u1ec3n n\u01b0\u1edbc n\u00f3ng d\u01b0\u1edbi 95\u00b0 trong th\u1eddi gian d\u00e0i v\u00e0 c\u00f3 \u0111\u1eb7c t\u00ednh ch\u1ed1ng \u0103n m\u00f2n, tu\u1ed5i th\u1ecd l\u00ean \u0111\u1ebfn 50 n\u0103m, hi\u1ec7u qu\u1ea3 gi\u1eef nhi\u1ec7t t\u1ed1t, k\u1ebft n\u1ed1i ph\u00e2n t\u1eed an to\u00e0n cho kh\u00e1ch h\u00e0ng v\u00e0 thi c\u00f4ng thu\u1eadn ti\u1ec7n. K\u1ec3 t\u1eeb n\u0103m 2011, c\u00e1c th\u1eed nghi\u1ec7m \u0111\u00e3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u1edf h\u00e0ng ch\u1ee5c qu\u1eadn n\u1ed9i th\u00e0nh ph\u00eda b\u1eafc \u0111\u1ea5t n\u01b0\u1edbc t\u00f4i, cho c\u00e1c d\u1ef1 \u00e1n c\u1ea3i t\u1ea1o m\u1ea1ng l\u01b0\u1edbi \u0111\u01b0\u1eddng \u1ed1ng nhi\u1ec7t v\u00e0 c\u00e1c d\u1ef1 \u00e1n m\u1edbi. n\u0103ng l\u01b0\u1ee3ng m\u1edbi&#8221; \u0111\u00e3 \u0111\u01b0\u1ee3c qu\u1ea3ng b\u00e1 r\u1ed9ng r\u00e3i v\u00e0 ti\u00eau chu\u1ea9n &#8220;\u1ed0ng c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp \u0111\u00fac s\u1eb5n PE-RT II&#8221; c\u1ee7a CJ\/T480-2015 \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t h\u00e0nh v\u00e0o ng\u00e0y 23 th\u00e1ng 11 n\u0103m 2015.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Vi\u1ec7c tri\u1ec3n khai ti\u00eau chu\u1ea9n qu\u1ed1c gia m\u1edbi cho \u1ed1ng PE-RT l\u00e0 m\u1ed9t ph\u00e2n kh\u00fac th\u1ecb tr\u01b0\u1eddng quan tr\u1ecdng c\u1ee7a c\u00e1c s\u1ea3n ph\u1ea9m \u1ed1ng PE-RT t\u1ea1i Vi\u1ec7t Nam.Vi\u1ec7c ph\u00e2n lo\u1ea1i th\u1ecb tr\u01b0\u1eddng PE-RTI v\u00e0 Lo\u1ea1i II s\u1ebd l\u00e0m cho c\u00e1c s\u1ea3n ph\u1ea9m \u1ed1ng PE-RT t\u1ea1i th\u1ecb tr\u01b0\u1eddng n\u1ed9i \u0111\u1ecba \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n h\u00f3a h\u01a1n v\u00e0 ti\u00eau chu\u1ea9n m\u1edbi Th\u1ecb tr\u01b0\u1eddng cao c\u1ea5p \u0111\u01b0\u1ee3c ph\u00e2n chia trong th\u1ecb tr\u01b0\u1eddng \u0111\u01b0\u1eddng \u1ed1ng ban \u0111\u1ea7u, t\u1ea1o c\u01a1 h\u1ed9i m\u1edbi cho c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u01b0\u1eddng \u1ed1ng.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Dieu_chinh_cau_truc\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>\u0110i\u1ec1u ch\u1ec9nh c\u1ea5u tr\u00fac\u00a0<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">\u1ed0ng c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp \u0111\u00fac s\u1eb5n lo\u1ea1i PE-RT II, \u200b\u200bc\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 &#8220;\u1ed1ng nh\u1ef1a composite c\u00e1ch nhi\u1ec7t PE-RT II&#8221;, bao g\u1ed3m l\u1edbp b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i b\u1eb1ng polyetylen m\u1eadt \u0111\u1ed9 cao, \u1ed1ng x\u1ed1p c\u1ee9ng polyurethane v\u00e0 polyetylen ch\u1ecbu nhi\u1ec7t (PE-RT II) th\u00e0nh ph\u1ea7n \u1ed1ng. \u1ed0ng c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp \u0111\u00fac s\u1eb5n PE-RT II c\u00f3 hi\u1ec7u su\u1ea5t tuy\u1ec7t v\u1eddi v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng m\u1ea1ng l\u01b0\u1edbi \u0111\u01b0\u1eddng \u1ed1ng th\u1ee9 c\u1ea5p c\u1ee7a h\u1ec7 th\u1ed1ng s\u01b0\u1edfi trung t\u00e2m \u0111\u00f4 th\u1ecb. N\u00f3 c\u00f3 ba ph\u1ea7n: l\u1edbp b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i, l\u1edbp c\u00e1ch nhi\u1ec7t v\u00e0 \u1ed1ng l\u00e0m vi\u1ec7c, l\u1edbp b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng polyetylen m\u1eadt \u0111\u1ed9 cao; l\u1edbp c\u00e1ch nhi\u1ec7t \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng b\u1ecdt polyurethane c\u1ee9ng. \u1ed0ng l\u00e0m vi\u1ec7c PE-RT II \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng v\u1eadt li\u1ec7u \u1ed1ng \u0111\u1eb7c bi\u1ec7t polyetylen ch\u1ecbu nhi\u1ec7t lo\u1ea1i II (PE-RT II), c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 th\u1ea5p v\u00e0 cao l\u00ean \u0111\u1ebfn -40 \u0111\u1ebfn 110\u00b0C.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">a. \u1ed0ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i: \u1ed0ng polyetylen m\u1eadt \u0111\u1ed9 cao HDPE \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho l\u1edbp ngo\u00e0i c\u1ee7a \u1ed1ng ch\u00f4n tr\u1ef1c ti\u1ebfp \u0111\u00fac s\u1eb5n PE-RT II<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">b. L\u1edbp c\u00e1ch nhi\u1ec7t: s\u1eed d\u1ee5ng b\u1ecdt polyurethane c\u1ee9ng. V\u1eadt li\u1ec7u c\u1ee7a l\u1edbp c\u00e1ch nhi\u1ec7t l\u00e0 b\u1ecdt polyurethane c\u1ee9ng v\u1edbi m\u1eadt \u0111\u1ed9 t\u1eeb 60kg\/m3 \u0111\u1ebfn 80kg\/m3, l\u1ea5p \u0111\u1ea7y ho\u00e0n to\u00e0n kho\u1ea3ng c\u00e1ch gi\u1eefa \u1ed1ng PE-RT lo\u1ea1i II v\u00e0 v\u1ecf, \u0111\u1ed3ng th\u1eddi c\u00f3 \u0111\u1ed9 b\u1ec1n li\u00ean k\u1ebft nh\u1ea5t \u0111\u1ecbnh, do \u0111\u00f3 nhi\u1ec7t- polyetylen b\u1ec1n (PE -RT II) V\u1eadt li\u1ec7u \u1ed1ng, v\u1ecf b\u1ecdc b\u00ean ngo\u00e0i v\u00e0 l\u1edbp c\u00e1ch nhi\u1ec7t t\u1ea1o th\u00e0nh m\u1ed9t t\u1ed5ng th\u1ec3 v\u1eefng ch\u1eafc. B\u1ecdt \u1ed1ng c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp polyurethane c\u00f3 \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc v\u00e0 \u0111\u1eb7c t\u00ednh c\u00e1ch nhi\u1ec7t t\u1ed1t, th\u00f4ng th\u01b0\u1eddng c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 120\u00b0C v\u00e0 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 180\u00b0C th\u00f4ng qua s\u1eeda \u0111\u1ed5i ho\u1eb7c k\u1ebft h\u1ee3p v\u1edbi c\u00e1c v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t kh\u00e1c.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">c. \u1ed0ng l\u00e0m vi\u1ec7c: \u1ed0ng c\u00e1ch nhi\u1ec7t ch\u00f4n tr\u1ef1c ti\u1ebfp \u0111\u00fac s\u1eb5n PE-RT II s\u1eed d\u1ee5ng \u1ed1ng polyetylen ch\u1ecbu nhi\u1ec7t (PE-RT II). M\u00e0u s\u1eafc t\u1ef1 nhi\u00ean c\u1ee7a nguy\u00ean li\u1ec7u \u1ed1ng l\u00e0m vi\u1ec7c l\u00e0 trong su\u1ed1t, kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 h\u1ea1t m\u00e0u v\u00e0 ch\u1ea5t \u0111\u1ed9n n\u00e0o.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Dac_diem_hieu_suat\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>\u0110\u1eb7c \u0111i\u1ec3m hi\u1ec7u su\u1ea5t:<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">1) Hi\u1ec7u su\u1ea5t v\u1ec7 sinh<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Hi\u1ec7u su\u1ea5t v\u1ec7 sinh c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng v\u1eadn chuy\u1ec3n n\u01b0\u1edbc n\u00f3ng sinh ho\u1ea1t ph\u1ea3i tu\u00e2n theo c\u00e1c quy \u0111\u1ecbnh c\u1ee7a GB\/T17219.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">2) \u1ed0ng nh\u1ef1a composite c\u00e1ch nhi\u1ec7t<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">a. H\u00ecnh th\u1ee9c: B\u1ec1 ngo\u00e0i c\u1ee7a \u1ed1ng composite c\u00e1ch nhi\u1ec7t ph\u1ea3i s\u1ea1ch s\u1ebd v\u00e0 b\u1ec1 m\u1eb7t nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c kh\u00f4ng c\u00f3 c\u00e1c khuy\u1ebft t\u1eadt nh\u01b0 r\u00e3nh k\u1ebft c\u1ea5u, v\u1ebft n\u1ee9t, ch\u1ed7 l\u00f5m, t\u1ea1p ch\u1ea5t v\u00e0 m\u00e0u s\u1eafc kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a n\u00f3.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">b. \u0110\u1ed9 th\u1eb3ng \u0111\u1ee9ng c\u1ee7a \u0111\u1ea7u \u1ed1ng: \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i \u1edf cu\u1ed1i \u1ed1ng nh\u1ef1a composite c\u00e1ch nhi\u1ec7t ph\u1ea3i \u0111\u01b0\u1ee3c l\u00e0m ph\u1eb3ng b\u1eb1ng l\u1edbp c\u00e1ch nhi\u1ec7t b\u1ecdt polyurethane,<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">V\u00e0 n\u00f3 ph\u1ea3i vu\u00f4ng g\u00f3c v\u1edbi tr\u1ee5c c\u1ee7a \u1ed1ng l\u00e0m vi\u1ec7c v\u00e0 sai s\u1ed1 g\u00f3c ph\u1ea3i nh\u1ecf b\u1eb1ng 2,5 \u00b0.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">C. Bi\u1ebfn d\u1ea1ng \u0111\u00f9n v\u00e0 tr\u1ea7y x\u01b0\u1edbc: Khi l\u1edbp c\u00e1ch nhi\u1ec7t b\u1ecb bi\u1ebfn d\u1ea1ng \u0111\u00f9n, bi\u1ebfn d\u1ea1ng xuy\u00ean t\u00e2m kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 15% \u0111\u1ed9 d\u00e0y l\u1edbp c\u00e1ch nhi\u1ec7t thi\u1ebft k\u1ebf.<\/span><br \/>\n<span style=\"font-size: 12pt;\">\u0110\u1ed9 s\u00e2u v\u1ebft x\u01b0\u1edbc c\u1ee7a \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 10% \u0111\u1ed9 d\u00e0y th\u00e0nh t\u1ed1i thi\u1ec3u c\u1ee7a \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 1mm.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">d) Chi\u1ec1u d\u00e0i v\u00e0 \u0111\u1ed9 l\u1ec7ch c\u1ee7a ph\u1ea7n d\u00e0nh ri\u00eang \u1edf \u0111\u1ea7u \u1ed1ng:<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Chi\u1ec1u d\u00e0i c\u1ee7a ph\u1ea7n d\u00e0nh ri\u00eang kh\u00f4ng c\u00e1ch nhi\u1ec7t \u1edf c\u1ea3 hai \u0111\u1ea7u c\u1ee7a \u1ed1ng l\u00e0m vi\u1ec7c ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi k\u1ebft n\u1ed1i c\u1ee7a \u1ed1ng nh\u1ef1a composite c\u00e1ch nhi\u1ec7t v\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c chi\u1ec1u d\u00e0i d\u00e0nh ri\u00eang \u1edf c\u1ea3 hai \u0111\u1ea7u kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 20 mm.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">e. T\u00e1ch b\u1ecdt \u1edf \u0111\u1ea7u \u1ed1ng: l\u1edbp c\u00e1ch nhi\u1ec7t ph\u1ea3i \u0111\u01b0\u1ee3c li\u00ean k\u1ebft ch\u1eb7t ch\u1ebd v\u1edbi \u1ed1ng l\u00e0m vi\u1ec7c v\u00e0 \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i, k\u00edch th\u01b0\u1edbc xuy\u00ean t\u00e2m c\u1ee7a ph\u1ea7n t\u00e1ch b\u1ecdt c\u1ee7a \u0111o\u1ea1n \u1ed1ng kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 2 mm, \u0111\u1ed9 s\u00e2u d\u1ecdc theo h\u01b0\u1edbng tr\u1ee5c kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 70mm v\u00e0 chi\u1ec1u d\u00e0i t\u00edch l\u0169y theo h\u01b0\u1edbng chu vi kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 70mm, l\u1edbn h\u01a1n 1\/3 chu vi.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">3) Nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t c\u1ee7a \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Trong \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh, nhi\u1ec7t \u0111\u1ed9 tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i ph\u1ea3i nh\u1ecf h\u01a1n 50\u00b0C.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">4) T\u0103ng t\u1ef7 l\u1ec7 \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Tr\u01b0\u1edbc v\u00e0 sau khi \u1ed1ng nh\u1ef1a composite c\u00e1ch nhi\u1ec7t \u0111\u01b0\u1ee3c t\u1ea1o b\u1ecdt, t\u1ef7 l\u1ec7 t\u0103ng \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a c\u00f9ng m\u1ed9t m\u1eb7t c\u1eaft t\u1ea1i b\u1ea5t k\u1ef3 v\u1ecb tr\u00ed n\u00e0o c\u1ee7a \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 2%.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">5) \u0110\u1ed9 l\u1ec7ch tr\u1ee5c t\u1ed1i \u0111a<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Khi \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i kh\u00f4ng l\u1edbn h\u01a1n 160mm, \u0111\u1ed9 l\u1ec7ch t\u00e2m c\u1ee7a tr\u1ee5c kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 3,0mm; khi \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i c\u1ee7a \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i l\u1edbn h\u01a1n<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Khi 160mm, \u0111\u1ed9 l\u1ec7ch t\u00e2m c\u1ee7a tr\u1ee5c kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 4,5mm.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">6) L\u1ef1c c\u1eaft d\u1ecdc tr\u1ee5c<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Trong \u0111i\u1ec1u ki\u1ec7n 23\u00b0C, \u0111\u1ed9 b\u1ec1n c\u1eaft d\u1ecdc tr\u1ee5c c\u1ee7a \u1ed1ng nh\u1ef1a composite c\u00e1ch nhi\u1ec7t kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 0,09MPa.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">7) \u0110\u1ed9 c\u1ee9ng c\u1ee7a v\u00f2ng<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u0110\u1ed9 c\u1ee9ng v\u00f2ng c\u1ee7a nh\u1ef1a composite c\u00e1ch nhi\u1ec7t kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 4KN\/\u33a1.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">8) Ch\u1ed1ng va \u0111\u1eadp<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Trong \u0111i\u1ec1u ki\u1ec7n -20\u00b0, s\u1eed d\u1ee5ng qu\u1ea3 n\u1eb7ng 3,0kg th\u1ea3 t\u1eeb \u0111\u1ed9 cao 2m<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Khi r\u01a1i t\u1eeb tr\u00ean cao xu\u1ed1ng va ch\u1ea1m v\u00e0o \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i, \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i kh\u00f4ng \u0111\u01b0\u1ee3c c\u00f3 v\u1ebft n\u1ee9t nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">9) T\u00ednh linh ho\u1ea1t<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">N\u00f3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ed1ng nh\u1ef1a composite c\u00e1ch nhi\u1ec7t PUPE v\u00e0 PUPB c\u00f3 \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i danh ngh\u0129a kh\u00f4ng qu\u00e1 50mm. Khi b\u00e1n k\u00ednh u\u1ed1n t\u1ed1i thi\u1ec3u c\u1ee7a \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i kh\u00f4ng l\u1edbn h\u01a1n 30 l\u1ea7n \u0111\u01b0\u1eddng k\u00ednh ngo\u00e0i danh ngh\u0129a c\u1ee7a \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i, l\u1edbp c\u00e1ch nhi\u1ec7t v\u00e0 \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e1 v\u1ee1, \u0111\u1ed9 tr\u00f2n c\u1ee7a \u1ed1ng b\u1ea3o v\u1ec7 b\u00ean ngo\u00e0i kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 30% v\u00e0 Chi\u1ec1u r\u1ed9ng v\u1ebft n\u1ee9t c\u1ee7a l\u1edbp c\u00e1ch nhi\u1ec7t kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 5 mm.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">10) Hi\u1ec7u su\u1ea5t creep<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">T\u1ef7 l\u1ec7 creep kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n<\/span><\/p>\n<p><span style=\"font-size: 12pt;\"> 5. Ph\u00f2ng ng\u1eeba x\u00e2y d\u1ef1ng:<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Do c\u00f4ng ngh\u1ec7 s\u01b0\u1edfi \u1ea5m ch\u00f4n tr\u1ef1c ti\u1ebfp b\u1eaft \u0111\u1ea7u mu\u1ed9n \u1edf n\u01b0\u1edbc t\u00f4i n\u00ean ba \u0111i\u1ec1u ki\u1ec7n tr\u00ean v\u1eabn c\u1ea7n \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n li\u00ean t\u1ee5c. T\u1eeb g\u00f3c \u0111\u1ed9 c\u1ee7a c\u00e1c v\u1ea5n \u0111\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng trong th\u1ef1c h\u00e0nh k\u1ef9 thu\u1eadt, c\u1ea7n \u0111\u1eb7c bi\u1ec7t ch\u00fa \u00fd \u0111\u1ebfn c\u00e1c v\u1ea5n \u0111\u1ec1 sau trong thi\u1ebft k\u1ebf v\u00e0 x\u00e2y d\u1ef1ng:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\">1. Trong thi\u1ebft k\u1ebf v\u00e0 thi c\u00f4ng, c\u1ea7n th\u1ef1c s\u1ef1 hi\u1ec3u r\u1eb1ng vi\u1ec7c ch\u00f4n l\u1ea5p tr\u1ef1c ti\u1ebfp \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn nhi\u1ec7t \u0111\u01b0\u1ee3c chia th\u00e0nh hai ph\u01b0\u01a1ng ph\u00e1p: ch\u00f4n l\u1ea5p tr\u1ef1c ti\u1ebfp c\u00f3 b\u1ed3i th\u01b0\u1eddng v\u00e0 ch\u00f4n l\u1ea5p tr\u1ef1c ti\u1ebfp kh\u00f4ng b\u1ed3i th\u01b0\u1eddng, \u0111\u1ed3ng th\u1eddi n\u1eafm v\u1eefng nguy\u00ean l\u00fd l\u00e0m vi\u1ec7c, \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a hai ph\u01b0\u01a1ng ph\u00e1p. C\u00e1c tr\u01b0\u1eddng h\u1ee3p, \u0111\u1ec3 l\u1ef1a ch\u1ecdn h\u1ee3p l\u00fd trong thi\u1ebft k\u1ebf, an to\u00e0n, \u0111\u00e1ng tin c\u1eady v\u00e0 kinh t\u1ebf trong x\u00e2y d\u1ef1ng.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">1. Tr\u01b0\u1edbc h\u1ebft, ch\u00fang ta ph\u1ea3i n\u1eafm b\u1eaft kh\u00e1i ni\u1ec7m: ph\u01b0\u01a1ng ph\u00e1p ch\u00f4n l\u1ea5p tr\u1ef1c ti\u1ebfp c\u00f3 b\u00f9 l\u00e0 gi\u1ea3i quy\u1ebft \u0111\u1ed9 gi\u00e3n d\u00e0i nhi\u1ec7t c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng th\u00f4ng qua b\u00f9 t\u1ef1 nhi\u00ean c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng v\u00e0 b\u1ed9 b\u00f9 (ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ed9 b\u00f9 vu\u00f4ng v\u00e0 \u1ed1ng th\u1ed5i), \u0111\u1ec3 gi\u1ea3m thi\u1ec3u \u1ee9ng su\u1ea5t nhi\u1ec7t; ch\u00f4n tr\u1ef1c ti\u1ebfp m\u00e0 kh\u00f4ng b\u1ed3i th\u01b0\u1eddng N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, \u0111\u01b0\u1eddng \u1ed1ng kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 bi\u1ec7n ph\u00e1p b\u1ed3i th\u01b0\u1eddng n\u00e0o khi b\u1ecb nung n\u00f3ng m\u00e0 d\u1ef1a v\u00e0o \u0111\u1ed9 b\u1ec1n c\u1ee7a b\u1ea3n th\u00e2n \u0111\u01b0\u1eddng \u1ed1ng \u0111\u1ec3 h\u1ea5p th\u1ee5 \u1ee9ng su\u1ea5t nhi\u1ec7t.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt;\">2. Nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p \u0111\u1eb7t kh\u00f4ng b\u00f9: khi l\u1eafp \u0111\u1eb7t \u0111\u01b0\u1eddng \u1ed1ng, \u0111\u1ea7u ti\u00ean l\u00e0m n\u00f3ng \u0111\u01b0\u1eddng \u1ed1ng \u0111\u1ebfn m\u1ed9t nhi\u1ec7t \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh, sau \u0111\u00f3 h\u00e0n \u0111\u01b0\u1eddng \u1ed1ng \u0111\u1ec3 c\u1ed1 \u0111\u1ecbnh, khi \u0111\u01b0\u1eddng \u1ed1ng tr\u1edf l\u1ea1i nhi\u1ec7t \u0111\u1ed9 l\u1eafp \u0111\u1eb7t (nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m), \u0111\u01b0\u1eddng \u1ed1ng s\u1ebd \u0111\u01b0\u1ee3c h\u00e0n l\u1ea1i. ch\u1ecbu m\u1ed9t \u1ee9ng su\u1ea5t k\u00e9o nh\u1ea5t \u0111\u1ecbnh tr\u01b0\u1edbc. Khi \u0111\u01b0\u1eddng \u1ed1ng \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng, \u1ee9ng su\u1ea5t c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng b\u1eb1ng 0 khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng.Khi nhi\u1ec7t \u0111\u1ed9 ti\u1ebfp t\u1ee5c t\u0103ng, \u1ee9ng su\u1ea5t n\u00e9n c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng t\u0103ng l\u00ean.Khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 l\u00e0m vi\u1ec7c, \u1ee9ng su\u1ea5t n\u00e9n (\u1ee9ng su\u1ea5t nhi\u1ec7t) c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng v\u1eabn nh\u1ecf h\u01a1n \u1ee9ng su\u1ea5t cho ph\u00e9p. B\u1eb1ng c\u00e1ch n\u00e0y, \u0111\u01b0\u1eddng \u1ed1ng c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng m\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft b\u1ecb b\u00f9. Ph\u01b0\u01a1ng ph\u00e1p kh\u00f4ng b\u00f9 n\u00e0y \u00e1p d\u1ee5ng l\u00fd thuy\u1ebft c\u01b0\u1eddng \u0111\u1ed9 th\u1ee9 t\u01b0, \u0111\u00f2i h\u1ecfi ph\u1ea3i l\u00e0m n\u00f3ng tr\u01b0\u1edbc \u0111\u01b0\u1eddng \u1ed1ng trong qu\u00e1 tr\u00ecnh x\u00e2y d\u1ef1ng, v\u00e0 vi\u1ec7c x\u00e2y d\u1ef1ng r\u1ea5t r\u1eafc r\u1ed1i.Tuy nhi\u00ean, c\u00f3 m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn th\u1ef1c h\u00e0nh k\u1ef9 thu\u1eadt trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc, v\u00e0 t\u00ednh to\u00e1n l\u00fd thuy\u1ebft l\u00e0 \u0111\u00e1ng tin c\u1eady v\u00e0 c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 an to\u00e0n.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p kh\u00f4ng b\u00f9 kh\u00e1c l\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n v\u00e0 ph\u00e2n lo\u1ea1i \u1ee9ng su\u1ea5t do Vi\u1ec7n thi\u1ebft k\u1ebf nhi\u1ec7t kh\u00ed B\u1eafc Kinh c\u1ee7a n\u01b0\u1edbc t\u00f4i \u0111\u1ec1 xu\u1ea5t trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y s\u1eed d\u1ee5ng ph\u00e2n t\u00edch \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 \u00e1p d\u1ee5ng l\u00fd thuy\u1ebft c\u01b0\u1eddng \u0111\u1ed9 th\u1ee9 ba. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ph\u00e1t huy h\u1ebft kh\u1ea3 n\u0103ng d\u1ebbo c\u1ee7a th\u00e9p, thu\u1eadn ti\u1ec7n cho vi\u1ec7c thi c\u00f4ng m\u00e0 kh\u00f4ng c\u1ea7n gia nhi\u1ec7t tr\u01b0\u1edbc.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">3. \u0110\u1ed9 s\u00e2u ch\u00f4n l\u1ea5p c\u1ee7a hai l\u1edbp xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c nhau.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u0110\u1ea7u ti\u00ean, khi x\u00e1c \u0111\u1ecbnh \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p ch\u00f4n l\u1ea5p tr\u1ef1c ti\u1ebfp b\u1ed3i th\u01b0\u1eddng, \u0111\u1ed9 s\u00e2u ch\u00f4n l\u1ea5p ch\u1ec9 xem x\u00e9t r\u1eb1ng s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng s\u1ebd kh\u00f4ng b\u1ecb h\u01b0 h\u1ea1i do t\u00e1c \u0111\u1ed9ng c\u1ee7a t\u1ea3i tr\u1ecdng m\u1eb7t \u0111\u1ea5t, v\u00e0 n\u00f3 \u0111\u01b0\u1ee3c xem x\u00e9t t\u1eeb kh\u00eda c\u1ea1nh kinh t\u1ebf v\u00e0 x\u00e2y d\u1ef1ng ti\u1ec7n. Khi \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p ch\u00f4n l\u1ea5p tr\u1ef1c ti\u1ebfp c\u00f3 b\u1ed3i th\u01b0\u1eddng, n\u00ean ch\u00f4n c\u00e0ng n\u00f4ng c\u00e0ng t\u1ed1t, th\u00f4ng th\u01b0\u1eddng \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp \u0111\u1ea5t ph\u1ee7 ph\u1ea3i l\u1edbn h\u01a1n 0,6 m\u00e9t, kh\u00f4ng li\u00ean quan g\u00ec \u0111\u1ebfn k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1eddng k\u00ednh \u1ed1ng.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Th\u1ee9 hai, khi \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p ch\u00f4n l\u1ea5p tr\u1ef1c ti\u1ebfp kh\u00f4ng b\u1ed3i th\u01b0\u1eddng, \u0111\u1ed9 s\u00e2u ch\u00f4n l\u1ea5p c\u1ea7n xem x\u00e9t c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh ch\u1ee7 y\u1ebfu li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp \u0111\u1ea5t ph\u1ee7, th\u01b0\u1eddng s\u00e2u h\u01a1n so v\u1edbi ch\u00f4n l\u1ea5p. \u0111\u1ed9 s\u00e2u t\u1ed1i thi\u1ec3u c\u1ee7a l\u1edbp \u0111\u1ea5t ph\u1ee7 ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n theo\u00a0 &#8220;Quy t\u1eafc thi\u1ebft k\u1ebf m\u1ea1ng l\u01b0\u1edbi s\u01b0\u1edfi \u1ea5m \u0111\u00f4 th\u1ecb&#8221; v\u00e0 \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp \u0111\u1ea5t ph\u1ee7 ph\u1ea3i t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi k\u00edch th\u01b0\u1edbc c\u1ee7a \u0111\u01b0\u1eddng k\u00ednh \u1ed1ng.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">4. Cho d\u00f9 \u0111\u1eb7t m\u00e0 kh\u00f4ng c\u00f3 b\u00f9 ho\u1eb7c \u0111\u1eb7t c\u00f3 b\u00f9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong thi\u1ebft k\u1ebf, nguy\u00ean t\u1eafc l\u00e0 \u1ed1ng th\u1eb3ng d\u00e0i h\u01a1n, nh\u00e1nh gi\u1eefa \u00edt h\u01a1n v\u00e0 khi m\u00f4i tr\u01b0\u1eddng gia nhi\u1ec7t kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 100 \u00b0 C, n\u00ean \u01b0u ti\u00ean \u0111\u1eb7t kh\u00f4ng c\u00f3 b\u00f9. M\u1eb7t kh\u00e1c, vi\u1ec7c \u0111\u1eb7t v\u1edbi b\u1ed3i th\u01b0\u1eddng n\u00ean \u0111\u01b0\u1ee3c xem x\u00e9t. C\u1ee5 th\u1ec3, \u0111\u01b0\u1eddng d\u00e2y ch\u00ednh c\u1ee7a m\u1ea1ng l\u01b0\u1edbi s\u01b0\u1edfi \u1ea5m n\u00ean \u0111\u01b0\u1ee3c \u0111\u1eb7t m\u00e0 kh\u00f4ng c\u00f3 b\u00f9, v\u00e0 m\u1ea1ng l\u01b0\u1edbi \u0111\u01b0\u1eddng \u1ed1ng nh\u00e1nh trong s\u00e2n n\u00ean \u0111\u01b0\u1ee3c \u0111\u1eb7t c\u00f3 b\u00f9, tuy nhi\u00ean, m\u1ed9t s\u1ed1 nh\u00e0 thi\u1ebft k\u1ebf hi\u1ec7n nay th\u00edch c\u00f3 b\u00f9 h\u01a1n v\u00e0 n\u00ean \u1ee7ng h\u1ed9 thi\u1ebft k\u1ebf t\u1ed1i \u01b0u h\u00f3a.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">2. Tr\u01b0\u1edbc khi thi c\u00f4ng, c\u1ea7n ti\u1ebfn h\u00e0nh nghi\u00ean c\u1ee9u nh\u00e0 s\u1ea3n xu\u1ea5t \u1ed1ng ch\u00f4n tr\u1ef1c ti\u1ebfp c\u00e1ch nhi\u1ec7t polyurethane \u0111\u00fac s\u1eb5n, ti\u1ebfn h\u00e0nh ki\u1ec3m tra c\u1ea9n th\u1eadn sau khi v\u00e0o c\u00f4ng tr\u01b0\u1eddng v\u00e0 t\u1eeb ch\u1ed1i s\u1eed d\u1ee5ng \u1ed1ng c\u00e1ch nhi\u1ec7t kh\u00f4ng \u0111\u1ee7 ti\u00eau chu\u1ea9n.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">3. Trong thi c\u00f4ng \u0111\u01b0\u1eddng \u1ed1ng ch\u00f4n tr\u1ef1c ti\u1ebfp, h\u00e0n l\u00e0 c\u00f4ng vi\u1ec7c then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng c\u00f4ng tr\u00ecnh.<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\">1. Ch\u1ec9 nh\u1eefng th\u1ee3 h\u00e0n \u0111\u00e3 c\u00f3 ch\u1ee9ng ch\u1ec9 h\u00e0nh ngh\u1ec1 m\u1edbi \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n h\u00e0n trong ph\u1ea1m vi cho ph\u00e9p c\u1ee7a ch\u1ee9ng ch\u1ec9 h\u00e0nh ngh\u1ec1, th\u1ee3 h\u00e0n kh\u00f4ng c\u00f3 ch\u1ee9ng ch\u1ec9 h\u00e0nh ngh\u1ec1 kh\u00f4ng \u0111\u01b0\u1ee3c tham gia thi c\u00f4ng h\u00e0n.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">2. Khi h\u00e0n c\u00e1c m\u1ed1i n\u1ed1i \u1ed1ng, c\u1ea7n chu\u1ea9n b\u1ecb h\u1ed1 c\u00f4ng vi\u1ec7c, ch\u00fa \u00fd \u0111\u1ebfn \u0111\u1ed9 v\u00e1t c\u1ee7a m\u1ed1i n\u1ed1i v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng h\u00e0n c\u1ee7a m\u1ed1i n\u1ed1i.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt;\">4. C\u1ed1 \u0111\u1ecbnh gi\u00e1 \u0111\u1ee1, ch\u1ea5t l\u01b0\u1ee3ng thi c\u00f4ng c\u1ee7a c\u00e1c gi\u1ebfng kh\u00e1c nhau \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng c\u00f4ng tr\u00ecnh v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng, n\u1ebfu gi\u1ebfng kh\u00f4ng \u0111\u01b0\u1ee3c ch\u1ed1ng th\u1ea5m th\u00ec c\u00e1c b\u1ed9 ph\u1eadn s\u1ebd b\u1ecb h\u01b0 h\u1ecfng do ng\u00e2m trong n\u01b0\u1edbc. Do \u0111\u00f3, vi\u1ec7c thi c\u00f4ng c\u1ea7n \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh c\u1ea9n th\u1eadn \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng c\u00f4ng tr\u00ecnh.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">5. Ph\u1ea3i ch\u00fa \u00fd \u0111\u1ebfn vi\u1ec7c tri\u1ec7t ti\u00eau \u0111\u01b0\u1eddng \u1ed1ng ch\u00f4n tr\u1ef1c ti\u1ebfp, trong \u0111i\u1ec1u ki\u1ec7n tri\u1ec7t ti\u00eau, tr\u01b0\u1edbc ti\u00ean ti\u1ebfn h\u00e0nh t\u01b0\u1edbi v\u00e0 x\u1ea3 kh\u00ed, sau \u0111\u00f3 th\u1ef1c hi\u1ec7n theo hai b\u01b0\u1edbc:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\">1. Ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n: Sau khi t\u0103ng \u00e1p su\u1ea5t trong \u0111\u01b0\u1eddng \u1ed1ng l\u00ean 1,5 l\u1ea7n \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c, s\u1ebd kh\u00f4ng c\u00f3 r\u00f2 r\u1ec9 trong v\u00f2ng 10 ph\u00fat sau khi \u00e1p su\u1ea5t \u1ed5n \u0111\u1ecbnh.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">2. Ki\u1ec3m tra \u0111\u1ed9 k\u00edn: Khi \u00e1p su\u1ea5t trong \u0111\u01b0\u1eddng \u1ed1ng gi\u1ea3m \u0111\u1ebfn \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c d\u00f9ng b\u00faa nh\u1ecf 1kg ki\u1ec3m tra l\u1ea7n l\u01b0\u1ee3t c\u00e1c m\u1ed1i h\u00e0n xung quanh c\u00e1c m\u1ed1i h\u00e0n, n\u1ebfu trong v\u00f2ng 30 ph\u00fat kh\u00f4ng c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng r\u00f2 r\u1ec9 v\u00e0 \u0111\u1ed9 s\u1ee5t \u00e1p kh\u00f4ng qu\u00e1 0,2 atm, n\u00f3 \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">3. H\u1ed3 s\u01a1 ki\u1ec3m tra \u00e1p su\u1ea5t ph\u1ea3i \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef theo c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt;\">6. Thi c\u00f4ng c\u00e1ch nhi\u1ec7t t\u1ea1i ch\u1ed7. \u0110\u00e2y l\u00e0 h\u1ea1ng m\u1ee5c \u0111\u1eb7c th\u00f9 khi thi c\u00f4ng \u0111\u01b0\u1eddng \u1ed1ng ch\u00f4n tr\u1ef1c ti\u1ebfp, ch\u1ea5t l\u01b0\u1ee3ng c\u00f4ng tr\u00ecnh \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn tu\u1ed5i th\u1ecd s\u1eed d\u1ee5ng n\u00ean ph\u1ea3i \u0111\u01b0\u1ee3c quan t\u00e2m \u0111\u00fang m\u1ee9c. Vi\u1ec7c c\u00e1ch nhi\u1ec7t m\u1ed1i n\u1ed1i t\u1ea1i ch\u1ed7 c\u1ee7a \u1ed1ng c\u00e1ch nhi\u1ec7t ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh sau khi \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m tra \u00e1p su\u1ea5t, c\u00f3 hai ph\u01b0\u01a1ng ph\u00e1p l\u00e0 thi c\u00f4ng t\u1ea1o b\u1ecdt t\u1ea1i ch\u1ed7 v\u00e0 thi c\u00f4ng g\u1ea1ch c\u00e1ch nhi\u1ec7t cho l\u1edbp c\u00e1ch nhi\u1ec7t, c\u00f3 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p x\u1ebfp l\u1edbp (ch\u1eb3ng h\u1ea1n nh\u01b0 cao &#8211; l\u1edbp b\u1ea3o v\u1ec7 b\u1eb1ng nh\u1ef1a gia c\u01b0\u1eddng b\u1eb1ng polyetylen v\u00e0 s\u1ee3i th\u1ee7y tinh), nh\u01b0ng ph\u1ea3i \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n, \u0111\u1ed9 k\u00edn v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ea5m c\u1ee7a m\u1ed1i n\u1ed1i.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">7. Vi\u1ec7c l\u1ea5p \u0111\u1ea7y ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh sau khi ki\u1ec3m tra \u00e1p su\u1ea5t \u0111\u01b0\u1eddng \u1ed1ng, m\u1ed1i n\u1ed1i, \u0111o l\u01b0\u1eddng ho\u00e0n th\u00e0nh v\u00e0 l\u00e0m s\u1ea1ch, \u0111\u1ed3ng th\u1eddi ph\u1ea3i \u0111\u01b0\u1ee3c l\u1ea5p \u0111\u1ea7y b\u1eb1ng c\u00e1t c\u00f3 \u0111\u1ed9 d\u00e0y quy \u0111\u1ecbnh theo \u0111\u1eb7c \u0111i\u1ec3m x\u00e2y d\u1ef1ng c\u1ee7a \u0111\u01b0\u1eddng \u1ed1ng ch\u00f4n tr\u1ef1c ti\u1ebfp v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p c\u1eaft g\u00f3c.<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>M\u1ee5c l\u1ee5c \u1ed0ng c\u00e1ch nhi\u1ec7t\u00a0\u1ed0ng c\u00e1ch nhi\u1ec7t PE-RT 2 IIGi\u1edbi thi\u1ec7u s\u1ea3n ph\u1ea9m \u1ed1ng c\u00e1ch nhi\u1ec7t\u0110i\u1ec1u ch\u1ec9nh c\u1ea5u tr\u00fac\u00a0\u0110\u1eb7c \u0111i\u1ec3m hi\u1ec7u su\u1ea5t: \u1ed0ng c\u00e1ch nhi\u1ec7t\u00a0 \u1ed0ng c\u00e1ch nhi\u1ec7t l\u00e0 t\u00ean vi\u1ebft t\u1eaft c\u1ee7a \u1ed1ng c\u00e1ch nhi\u1ec7t, \u1ed1ng b\u1ea3o qu\u1ea3n nhi\u1ec7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 v\u1eadn chuy\u1ec3n ch\u1ea5t l\u1ecfng, kh\u00ed v\u00e0 c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n kh\u00e1c. \u1ed0ng &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/dpm360.com\/san-pham\/ong-cach-nhiet\/\" class=\"more-link\">\u0110\u1ecdc ti\u1ebfp<span class=\"screen-reader-text\"> &#8220;\u1ed0ng c\u00e1ch nhi\u1ec7t&#8221;<\/span><\/a><\/p>\n","protected":false},"featured_media":4329,"comment_status":"open","ping_status":"closed","template":"","meta":[],"yoast_head":"\n<title>\u1ed0ng c\u00e1ch nhi\u1ec7t - 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