{"id":4486,"date":"2023-04-14T18:33:40","date_gmt":"2023-04-14T11:33:40","guid":{"rendered":"https:\/\/dpm360.com\/?post_type=product&#038;p=4486"},"modified":"2023-06-02T17:52:26","modified_gmt":"2023-06-02T10:52:26","slug":"hat-nhua-ldpe","status":"publish","type":"product","link":"https:\/\/dpm360.com\/san-pham\/hat-nhua-ldpe\/","title":{"rendered":"H\u1ea1t nh\u1ef1a LDPE nguy\u00ean sinh"},"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\/hat-nhua-ldpe\/#Hat_nhua_LDPE_nguyen_sinh\" title=\"H\u1ea1t nh\u1ef1a LDPE nguy\u00ean sinh\">H\u1ea1t nh\u1ef1a LDPE nguy\u00ean sinh<\/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\/hat-nhua-ldpe\/#Tong_quan_ve_san_pham_hat_nhua_LDPE\" title=\"T\u1ed5ng quan v\u1ec1 s\u1ea3n ph\u1ea9m h\u1ea1t nh\u1ef1a LDPE\">T\u1ed5ng quan v\u1ec1 s\u1ea3n ph\u1ea9m h\u1ea1t nh\u1ef1a LDPE<\/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\/hat-nhua-ldpe\/#Phuong_phap_san_xuat_hat_nhua\" title=\"Ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t h\u1ea1t nh\u1ef1a\">Ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t h\u1ea1t nh\u1ef1a<\/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\/hat-nhua-ldpe\/#Tinh_nang_san_xuat\" title=\"T\u00ednh n\u0103ng s\u1ea3n xu\u1ea5t\">T\u00ednh n\u0103ng s\u1ea3n xu\u1ea5t<\/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\/hat-nhua-ldpe\/#Hieu_suat_san_pham_hat_nhua_LDPE\" title=\"Hi\u1ec7u su\u1ea5t s\u1ea3n ph\u1ea9m\u00a0 h\u1ea1t nh\u1ef1a LDPE\">Hi\u1ec7u su\u1ea5t s\u1ea3n ph\u1ea9m\u00a0 h\u1ea1t nh\u1ef1a LDPE<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/dpm360.com\/san-pham\/hat-nhua-ldpe\/#Ung_dung_hat_nhua_LDPE\" title=\"\u1ee8ng d\u1ee5ng h\u1ea1t nh\u1ef1a LDPE\">\u1ee8ng d\u1ee5ng h\u1ea1t nh\u1ef1a LDPE<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/dpm360.com\/san-pham\/hat-nhua-ldpe\/#Trien_vong_phat_trien_hat_nhua_LDPE\" title=\"Tri\u1ec3n v\u1ecdng ph\u00e1t tri\u1ec3n h\u1ea1t nh\u1ef1a LDPE\">Tri\u1ec3n v\u1ecdng ph\u00e1t tri\u1ec3n h\u1ea1t nh\u1ef1a LDPE<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Hat_nhua_LDPE_nguyen_sinh\"><\/span><span style=\"color: #008000; font-size: 12pt;\"><em><strong>H\u1ea1t nh\u1ef1a LDPE nguy\u00ean sinh<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-size: 12pt;\">H\u1ea1t nh\u1ef1a LDPE l\u00e0 Polyetylen m\u1eadt \u0111\u1ed9 th\u1ea5p, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 polyetylen \u00e1p su\u1ea5t cao (LDPE), lo\u1ea1i nh\u1ef1a polyetylen nh\u1eb9 nh\u1ea5t, c\u00f3 m\u00e0u tr\u1eafng s\u1eefa, kh\u00f4ng v\u1ecb, kh\u00f4ng m\u00f9i, kh\u00f4ng \u0111\u1ed9c h\u1ea1i v\u00e0 c\u00e1c h\u1ea1t s\u00e1p x\u1ec9n m\u00e0u. N\u00f3 c\u00f3 t\u00ednh linh ho\u1ea1t t\u1ed1t, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, c\u00e1ch \u0111i\u1ec7n, trong su\u1ed1t, d\u1ec5 x\u1eed l\u00fd v\u00e0 \u0111\u1ed9 tho\u00e1ng kh\u00ed nh\u1ea5t \u0111\u1ecbnh. N\u00f3 c\u00f3 t\u00ednh \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc t\u1ed1t, kh\u00e1ng ki\u1ec1m v\u00e0 kh\u00e1ng dung m\u00f4i h\u1eefu c\u01a1 n\u00f3i chung. T\u00ean ti\u1ebfng Vi\u1ec7t Polyetylen t\u1ef7 tr\u1ecdng th\u1ea5pt \u1ef7 tr\u1ecdng 0,91 \u0111\u1ebfn 0,93 g\/cm\u00b3.\u00a0<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Xem th\u00eam: <span style=\"color: #000080;\"><a style=\"color: #000080;\" href=\"https:\/\/dpm360.com\/san-pham\/hat-nhua-hdpe\/\">H\u1ea1t nh\u1ef1a HDPE<\/a><\/span><\/span><\/p>\n<figure id=\"attachment_4488\" aria-describedby=\"caption-attachment-4488\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"wp-image-4488 size-medium\" src=\"https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/hat-nhua-ldpe-300x300.jpg\" alt=\"H\u1ea1t nh\u1ef1a LDPE\" width=\"300\" height=\"300\" srcset=\"https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/hat-nhua-ldpe-300x300.jpg 300w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/hat-nhua-ldpe-150x150.jpg 150w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/hat-nhua-ldpe-100x100.jpg 100w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/hat-nhua-ldpe.jpg 345w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-4488\" class=\"wp-caption-text\"><span style=\"font-size: 12pt;\">H\u1ea1t nh\u1ef1a LDPE<\/span><\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Tong_quan_ve_san_pham_hat_nhua_LDPE\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>T\u1ed5ng quan v\u1ec1 s\u1ea3n ph\u1ea9m h\u1ea1t nh\u1ef1a LDPE<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">Polyetylen m\u1eadt \u0111\u1ed9 th\u1ea5p \u00e1p su\u1ea5t cao (HP-LDPE, vi\u1ebft t\u1eaft l\u00e0 LDPE) \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng nghi\u1ec7p h\u00f3a trong h\u01a1n 70 n\u0103m, m\u1eb7c d\u00f9 v\u1edbi vi\u1ec7c ph\u00e1t hi\u1ec7n v\u00e0 ph\u00e1t tri\u1ec3n c\u00e1c ch\u1ea5t x\u00fac t\u00e1c tr\u00f9ng h\u1ee3p olefin, s\u1ef1 \u0111a d\u1ea1ng v\u00e0 s\u1ea3n l\u01b0\u1ee3ng c\u1ee7a polyetylen \u0111\u00e3 t\u0103ng l\u00ean \u0111\u00e1ng k\u1ec3, nh\u01b0ng \u00e1p su\u1ea5t cao polyetylen v\u1eabn chi\u1ebfm m\u1ed9t v\u1ecb tr\u00ed quan tr\u1ecdng. Ethylene \u0111\u01b0\u1ee3c tr\u00f9ng h\u1ee3p th\u00e0nh polyetylen c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng ph\u00e2n t\u1eed cao theo c\u01a1 ch\u1ebf g\u1ed1c t\u1ef1 do d\u01b0\u1edbi nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t cao, c\u00f3 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m sau:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\">(1) Qu\u00e1 tr\u00ecnh tr\u00f9ng h\u1ee3p etilen l\u00e0 qu\u00e1 tr\u00ecnh t\u1ecfa nhi\u1ec7t m\u1ea1nh. Nhi\u1ec7t tr\u00f9ng h\u1ee3p c\u1ee7a ethylene l\u00e0 kho\u1ea3ng 93,5kJ\/mol (ho\u1eb7c 3,3kJ\/g) v\u00e0 nhi\u1ec7t dung ri\u00eang c\u1ee7a ethylene \u1edf 235MPa v\u00e0 150 ~ 300\u2103 l\u00e0 2,51 ~ 2,85J\/(g \u00b7 \u2103), ph\u1ea3n \u1ee9ng kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf k\u1ecbp th\u1eddi, m\u1ed7i qu\u00e1 tr\u00ecnh tr\u00f9ng h\u1ee3p 1% ethylene s\u1ebd l\u00e0m t\u0103ng nhi\u1ec7t \u0111\u1ed9 th\u00eam 12 ~ 13 \u00b0 C. N\u1ebfu nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao c\u0169ng s\u1ebd g\u00e2y ra s\u1ef1 ph\u00e2n h\u1ee7y ethylene.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">(2) D\u01b0\u1edbi \u00e1p su\u1ea5t cao, etilen b\u1ecb n\u00e9n \u0111\u1ebfn tr\u1ea1ng th\u00e1i pha kh\u00ed c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang 0,5g\/mL, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 ch\u1ea5t l\u1ecfng kh\u00f4ng n\u00e9n \u0111\u01b0\u1ee3c, l\u00fac n\u00e0y kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c ph\u00e2n t\u1eed etilen \u0111\u01b0\u1ee3c r\u00fat ng\u1eafn \u0111\u00e1ng k\u1ec3, do \u0111\u00f3 t\u0103ng l\u00ean s\u1ed1 l\u01b0\u1ee3ng g\u1ed1c t\u1ef1 do v\u00e0 ph\u00e2n t\u1eed etilen. X\u00e1c su\u1ea5t va ch\u1ea1m n\u00ean ph\u1ea3n \u1ee9ng tr\u00f9ng h\u1ee3p d\u1ec5 x\u1ea3y ra.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">(3) Ho\u1ea1t \u0111\u1ed9ng g\u1ed1c t\u1ef1 do c\u1ee7a chu\u1ed7i \u0111ang ph\u00e1t tri\u1ec3n cao \u1edf nhi\u1ec7t \u0111\u1ed9 cao, ph\u1ea3n \u1ee9ng chuy\u1ec3n chu\u1ed7i d\u1ec5 x\u1ea3y ra v\u00e0 polyme thu \u0111\u01b0\u1ee3c c\u00f3 c\u1ea5u tr\u00fac tuy\u1ebfn t\u00ednh v\u1edbi nhi\u1ec1u chu\u1ed7i ph\u00e2n nh\u00e1nh h\u01a1n. Th\u00f4ng th\u01b0\u1eddng, c\u1ee9 1000 nguy\u00ean t\u1eed chu\u1ed7i carbon ch\u1ee9a 20 ~ 30 chu\u1ed7i ph\u00e2n nh\u00e1nh, \u0111\u1ed9 k\u1ebft tinh l\u00e0 45% ~ 65%, m\u1eadt \u0111\u1ed9 0,910 ~ 0,925g \/ mL, tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9, linh ho\u1ea1t, ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, ch\u1ed1ng va \u0111\u1eadp t\u1ed1t.<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_4489\" aria-describedby=\"caption-attachment-4489\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"wp-image-4489 size-medium\" src=\"https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/hat-nguyen-sinh-ldpe-300x300.jpg\" alt=\"H\u1ea1t nguy\u00ean sinh LDPE\" width=\"300\" height=\"300\" srcset=\"https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/hat-nguyen-sinh-ldpe-300x300.jpg 300w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/hat-nguyen-sinh-ldpe-150x150.jpg 150w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/hat-nguyen-sinh-ldpe-100x100.jpg 100w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/hat-nguyen-sinh-ldpe-600x600.jpg 600w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/hat-nguyen-sinh-ldpe.jpg 750w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-4489\" class=\"wp-caption-text\"><span style=\"font-size: 12pt;\">H\u1ea1t nguy\u00ean sinh LDPE<\/span><\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Phuong_phap_san_xuat_hat_nhua\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>Ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t h\u1ea1t nh\u1ef1a<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">Polyetylen m\u1eadt \u0111\u1ed9 th\u1ea5p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh ph\u01b0\u01a1ng ph\u00e1p \u00e1p su\u1ea5t cao v\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u00e1p su\u1ea5t th\u1ea5p theo ph\u01b0\u01a1ng ph\u00e1p tr\u00f9ng h\u1ee3p. Theo lo\u1ea1i l\u00f2 ph\u1ea3n \u1ee9ng, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh ph\u01b0\u01a1ng ph\u00e1p b\u1ec3 v\u00e0 ph\u01b0\u01a1ng ph\u00e1p h\u00ecnh \u1ed1ng. S\u1eed d\u1ee5ng ethylene l\u00e0m nguy\u00ean li\u1ec7u th\u00f4, n\u00f3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o l\u00f2 ph\u1ea3n \u1ee9ng, d\u01b0\u1edbi t\u00e1c d\u1ee5ng c\u1ee7a ch\u1ea5t kh\u01a1i m\u00e0o, ph\u1ea3n \u1ee9ng tr\u00f9ng h\u1ee3p \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n d\u01b0\u1edbi \u00e1p su\u1ea5t n\u00e9n cao.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">C\u1ea3 h\u1ea1t nh\u1ef1a LDPE v\u00e0 <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/dpm360.com\/san-pham\/hat-nhua-lldpe\/\">h\u1ea1t nh\u1ef1a LLDPE<\/a><\/span> \u0111\u1ec1u c\u00f3 t\u00ednh l\u01b0u bi\u1ebfn ho\u1eb7c \u0111\u1ed9 ch\u1ea3y r\u1ea5t t\u1ed1t. LLDPE \u00edt nh\u1ea1y c\u1ea3m v\u1edbi l\u1ef1c c\u1eaft do ph\u00e2n b\u1ed1 tr\u1ecdng l\u01b0\u1ee3ng ph\u00e2n t\u1eed h\u1eb9p v\u00e0 c\u00e1c nh\u00e1nh m\u1ea1ch ng\u1eafn. Trong qu\u00e1 tr\u00ecnh c\u1eaft (ch\u1eb3ng h\u1ea1n nh\u01b0 \u00e9p \u0111\u00f9n), LLDPE duy tr\u00ec \u0111\u1ed9 nh\u1edbt l\u1edbn h\u01a1n v\u00e0 do \u0111\u00f3 kh\u00f3 x\u1eed l\u00fd h\u01a1n LDPE c\u00f3 c\u00f9ng ch\u1ec9 s\u1ed1 n\u00f3ng ch\u1ea3y. Trong \u00e9p \u0111\u00f9n, \u0111\u1ed9 nh\u1ea1y c\u1eaft th\u1ea5p h\u01a1n c\u1ee7a LLDPE cho ph\u00e9p gi\u1ea3m c\u0103ng th\u1eb3ng nhanh h\u01a1n c\u1ee7a chu\u1ed7i ph\u00e2n t\u1eed polyme v\u00e0 do \u0111\u00f3 c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd \u00edt nh\u1ea1y c\u1ea3m h\u01a1n v\u1edbi nh\u1eefng thay \u0111\u1ed5i trong t\u1ef7 l\u1ec7 th\u1ed5i ph\u1ed3ng.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Trong ph\u1ea7n m\u1edf r\u1ed9ng n\u00f3ng ch\u1ea3y, LLDPE th\u01b0\u1eddng c\u00f3 \u0111\u1ed9 nh\u1edbt th\u1ea5p h\u01a1n \u1edf c\u00e1c t\u1ed1c \u0111\u1ed9 bi\u1ebfn d\u1ea1ng kh\u00e1c nhau. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0, n\u00f3 s\u1ebd kh\u00f4ng b\u1ecb c\u1ee9ng khi k\u00e9o d\u00e0i nh\u01b0 LDPE. Khi t\u1ed1c \u0111\u1ed9 bi\u1ebfn d\u1ea1ng c\u1ee7a polyetylen t\u0103ng l\u00ean, LDPE cho th\u1ea5y \u0111\u1ed9 nh\u1edbt t\u0103ng \u0111\u00e1ng ng\u1ea1c nhi\u00ean, nguy\u00ean nh\u00e2n l\u00e0 do s\u1ef1 v\u01b0\u1edbng v\u00edu c\u1ee7a chu\u1ed7i ph\u00e2n t\u1eed.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y kh\u00f4ng \u0111\u01b0\u1ee3c quan s\u00e1t th\u1ea5y trong LLDPE v\u00ec s\u1ef1 v\u1eafng m\u1eb7t c\u1ee7a c\u00e1c nh\u00e1nh chu\u1ed7i d\u00e0i trong LLDPE gi\u1eef cho polyme kh\u00f4ng b\u1ecb v\u01b0\u1edbng v\u00edu. \u0110\u1eb7c t\u00ednh n\u00e0y c\u1ef1c k\u1ef3 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng phim, b\u1edfi v\u00ec m\u00e0ng LLDPE d\u1ec5 d\u00e0ng t\u1ea1o m\u00e0ng m\u1ecfng h\u01a1n trong khi v\u1eabn duy tr\u00ec \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 d\u1ebbo dai cao. T\u00ednh l\u01b0u bi\u1ebfn c\u1ee7a LLDPE c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f3m t\u1eaft l\u00e0 &#8220;c\u1ee9ng khi c\u1eaft&#8221; v\u00e0 &#8220;m\u1ec1m khi k\u00e9o d\u00e0i&#8221;. Thi\u1ebft b\u1ecb v\u00e0 \u0111i\u1ec1u ki\u1ec7n \u00e9p \u0111\u00f9n m\u00e0ng ph\u1ea3i \u0111\u01b0\u1ee3c s\u1eeda \u0111\u1ed5i khi s\u1eed d\u1ee5ng LLDPE thay v\u00ec LDPE. \u0110\u1ed9 nh\u1edbt cao c\u1ee7a LLDPE \u0111\u00f2i h\u1ecfi m\u00e1y \u0111\u00f9n ph\u1ea3i c\u00f3 nhi\u1ec1u n\u0103ng l\u01b0\u1ee3ng h\u01a1n v\u00e0 cung c\u1ea5p nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t n\u00f3ng ch\u1ea3y cao h\u01a1n. Kho\u1ea3ng c\u00e1ch ch\u1ebft ph\u1ea3i \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng \u0111\u1ec3 tr\u00e1nh s\u1ea3n xu\u1ea5t th\u1ea5p h\u01a1n do \u00e1p su\u1ea5t ng\u01b0\u1ee3c cao v\u00e0 g\u00e3y x\u01b0\u01a1ng n\u00f3ng ch\u1ea3y.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u0110\u1eb7c t\u00ednh &#8220;m\u1ec1m khi k\u00e9o d\u00e0i&#8221; c\u1ee7a LLDPE l\u00e0 m\u1ed9t b\u1ea5t l\u1ee3i trong qu\u00e1 tr\u00ecnh th\u1ed5i m\u00e0ng. Bong b\u00f3ng m\u00e0ng th\u1ed5i c\u1ee7a LLDPE kh\u00f4ng \u1ed5n \u0111\u1ecbnh nh\u01b0 c\u1ee7a LDPE. V\u00f2ng kh\u00ed m\u1ed9t m\u00f4i chung l\u00e0 \u0111\u1ee7 cho s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a LDPE. Bong b\u00f3ng m\u00e0ng \u0111\u1ed9c \u0111\u00e1o c\u1ee7a LLDPE y\u00eau c\u1ea7u v\u00f2ng kh\u00ed hai m\u00f4i ho\u00e0n h\u1ea3o h\u01a1n \u0111\u1ec3 \u1ed5n \u0111\u1ecbnh. L\u00e0m m\u00e1t bong b\u00f3ng b\u00ean trong b\u1eb1ng v\u00f2ng kh\u00ed hai m\u00f4i l\u00e0m t\u0103ng \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a bong b\u00f3ng \u0111\u1ed3ng th\u1eddi t\u0103ng c\u00f4ng su\u1ea5t m\u00e0ng \u1edf t\u1ed1c \u0111\u1ed9 s\u1ea3n xu\u1ea5t cao.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\"> Ngo\u00e0i vi\u1ec7c l\u00e0m m\u00e1t bong b\u00f3ng t\u1ed1t h\u01a1n, nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t m\u00e0ng s\u1eed d\u1ee5ng pha tr\u1ed9n v\u1edbi LDPE \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng h\u00f2a tan c\u1ee7a LLDPE.V\u1ec1 nguy\u00ean t\u1eafc, qu\u00e1 tr\u00ecnh \u00e9p \u0111\u00f9n LLDPE c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ho\u00e0n th\u00e0nh tr\u00ean thi\u1ebft b\u1ecb m\u00e0ng LDPE hi\u1ec7n c\u00f3 khi \u0111\u1ea1t 50%. Khi x\u1eed l\u00fd 100% LLDPE ho\u1eb7c v\u1eadt li\u1ec7u pha tr\u1ed9n gi\u00e0u LLDPE v\u00e0 LDPE, m\u00e1y \u0111\u00f9n LDPE chung \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00e0 thi\u1ebft b\u1ecb ph\u1ea3i \u0111\u01b0\u1ee3c c\u1ea3i ti\u1ebfn.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Theo tu\u1ed5i th\u1ecd c\u1ee7a m\u00e1y \u0111\u00f9n, c\u1ea3i ti\u1ebfn c\u00f3 th\u1ec3 l\u00e0 m\u1edf r\u1ed9ng khe h\u1edf khu\u00f4n, c\u1ea3i thi\u1ec7n v\u00f2ng \u0111\u1ec7m kh\u00ed, s\u1eeda \u0111\u1ed5i thi\u1ebft k\u1ebf tr\u1ee5c v\u00edt \u0111\u1ec3 \u0111\u00f9n t\u1ed1t h\u01a1n, \u0111\u1ed3ng th\u1eddi t\u0103ng c\u00f4ng su\u1ea5t v\u00e0 m\u00f4-men xo\u1eafn c\u1ee7a \u0111\u1ed9ng c\u01a1 n\u1ebfu c\u1ea7n. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng \u00e9p phun, nh\u00ecn chung kh\u00f4ng c\u1ea7n c\u1ea3i ti\u1ebfn thi\u1ebft b\u1ecb, nh\u01b0ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n x\u1eed l\u00fd c\u1ea7n \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a. Rotomold y\u00eau c\u1ea7u LLDPE \u0111\u01b0\u1ee3c nghi\u1ec1n th\u00e0nh c\u00e1c h\u1ea1t \u0111\u1ed3ng nh\u1ea5t (35 mesh). Qu\u00e1 tr\u00ecnh x\u1eed l\u00fd bao g\u1ed3m \u0111\u1ed5 \u0111\u1ea7y khu\u00f4n b\u1eb1ng LLDPE d\u1ea1ng b\u1ed9t, l\u00e0m n\u00f3ng v\u00e0 xoay khu\u00f4n theo hai chi\u1ec1u \u0111\u1ec3 ph\u00e2n ph\u1ed1i LLDPE \u0111\u1ed3ng \u0111\u1ec1u. S\u1ea3n ph\u1ea9m sau khi l\u00e0m ngu\u1ed9i \u0111\u01b0\u1ee3c l\u1ea5y ra kh\u1ecfi khu\u00f4n.\u00a0<\/span><\/p>\n<figure id=\"attachment_4490\" aria-describedby=\"caption-attachment-4490\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"size-full wp-image-4490\" src=\"https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/nhua-ldpe.jpg\" alt=\"Nh\u1ef1a LDPE nh\u1eadp kh\u1ea9u\" width=\"300\" height=\"300\" srcset=\"https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/nhua-ldpe.jpg 300w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/nhua-ldpe-150x150.jpg 150w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/04\/nhua-ldpe-100x100.jpg 100w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-4490\" class=\"wp-caption-text\"><span style=\"font-size: 12pt;\">Nh\u1ef1a LDPE nh\u1eadp kh\u1ea9u<\/span><\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Tinh_nang_san_xuat\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>T\u00ednh n\u0103ng s\u1ea3n xu\u1ea5t<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">(1) M\u1ed9t lo\u1ea1t thi\u1ebft b\u1ecb xung quanh thi\u1ebft b\u1ecb tr\u00f9ng h\u1ee3p, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u00e1y n\u00e9n, l\u00f2 ph\u1ea3n \u1ee9ng, thi\u1ebft b\u1ecb ph\u00e2n t\u00e1ch, \u0111\u01b0\u1eddng \u1ed1ng, m\u00e1y b\u01a1m, v.v., \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u s\u1eed d\u1ee5ng d\u01b0\u1edbi \u00e1p su\u1ea5t c\u1ef1c cao tr\u00ean 100MPa, ngay c\u1ea3 \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb ph\u00e2n t\u00e1ch v\u00e0 thu h\u1ed3i. y\u00eau c\u1ea7u v\u1eadn h\u00e0nh d\u01b0\u1edbi 100-350MPa n\u00ean to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh g\u1eb7p nhi\u1ec1u kh\u00f3 kh\u0103n b\u1ea5t k\u1ec3 t\u1eeb g\u00f3c \u0111\u1ed9 thi\u1ebft b\u1ecb hay v\u1eadn h\u00e0nh.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">(2) Nhi\u1ec7t tr\u00f9ng h\u1ee3p c\u1ee7a etilen cao h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c monome kh\u00e1c. Trong ph\u1ea3n \u1ee9ng tr\u00f9ng h\u1ee3p, t\u1ef7 l\u1ec7 tr\u00f9ng h\u1ee3p \u0111\u1ea1t 10% -20% ho\u1eb7c th\u1eadm ch\u00ed 30% -40% ngay l\u1eadp t\u1ee9c, do \u0111\u00f3, l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 lo\u1ea1i b\u1ecf nhi\u1ec7t tr\u00f9ng h\u1ee3p trong quy tr\u00ecnh \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t v\u1ea5n \u0111\u1ec1 quan tr\u1ecdng trong quy tr\u00ecnh, c\u0169ng l\u00e0 c\u1ea3i thi\u1ec7n t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i m\u1ed9t l\u01b0\u1ee3t v\u00e0 gi\u1ea3m m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng.m\u1ed9t trong nh\u1eefng ch\u00eca kh\u00f3a.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">(3) \u0110\u1ed9 nh\u1edbt c\u1ee7a s\u1ea3n ph\u1ea9m tr\u00f9ng h\u1ee3p trong h\u1ec7 th\u1ed1ng ph\u1ea3n \u1ee9ng r\u1ea5t cao v\u00e0 th\u00e0nh trong c\u1ee7a l\u00f2 ph\u1ea3n \u1ee9ng b\u1ec3 trong qu\u00e1 tr\u00ecnh b\u1ec3 v\u00e0 l\u00f2 ph\u1ea3n \u1ee9ng h\u00ecnh \u1ed1ng trong qu\u00e1 tr\u00ecnh h\u00ecnh \u1ed1ng r\u1ea5t d\u1ec5 t\u00edch t\u1ee5 polyme.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">(4) Ph\u01b0\u01a1ng th\u1ee9c v\u1eadn chuy\u1ec3n polime \u1edf tr\u1ea1ng th\u00e1i n\u00f3ng ch\u1ea3y c\u0169ng g\u1eb7p m\u1ed9t s\u1ed1 kh\u00f3 kh\u0103n nh\u1ea5t \u0111\u1ecbnh. C\u1ea3 \u00e1p su\u1ea5t ph\u1ea3n \u1ee9ng v\u00e0 nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 nh\u1edbt c\u1ee7a s\u1ea3n ph\u1ea9m, \u0111i\u1ec1u n\u00e0y c\u1ea7n h\u1ebft s\u1ee9c ch\u00fa \u00fd \u0111\u1ec3 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">(5) L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 lo\u1ea1i b\u1ecf s\u00e1p polyetylen c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng ph\u00e2n t\u1eed th\u1ea5p c\u00f3 trong etylen t\u00e1i ch\u1ebf kh\u1ecfi thi\u1ebft b\u1ecb ph\u00e2n t\u00e1ch \u00e1p su\u1ea5t cao c\u0169ng l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1. Xung quanh vi\u1ec7c gi\u1ea3i quy\u1ebft nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y, nhi\u1ec1u c\u00f4ng ty \u0111\u00e3 ph\u00e1t tri\u1ec3n nhi\u1ec1u quy tr\u00ecnh s\u1ea3n xu\u1ea5t kh\u00e1c nhau. Theo lo\u1ea1i l\u00f2 ph\u1ea3n \u1ee9ng, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i: qu\u00e1 tr\u00ecnh h\u00ecnh \u1ed1ng v\u00e0 qu\u00e1 tr\u00ecnh b\u1ec3. \u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a thi\u1ebft b\u1ecb ph\u1ea3n \u1ee9ng d\u1ea1ng \u1ed1ng l\u00e0 d\u00f2ng ch\u1ea3y theo h\u00ecnh p\u00edt t\u00f4ng trong \u1ed1ng kh\u00f4ng c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng tr\u1ed9n ng\u01b0\u1ee3c, nhi\u1ec7t \u0111\u1ed9 ph\u1ea3n \u1ee9ng thay \u0111\u1ed5i d\u1ecdc theo chi\u1ec1u d\u00e0i \u1ed1ng ph\u1ea3n \u1ee9ng n\u00ean nhi\u1ec7t \u0111\u1ed9 ph\u1ea3n \u1ee9ng c\u00f3 \u0111\u1ec9nh cao nh\u1ea5t n\u00ean ph\u00e2n b\u1ed1 tr\u1ecdng l\u01b0\u1ee3ng ph\u00e2n t\u1eed c\u1ee7a polyetylen thu \u0111\u01b0\u1ee3c r\u1ed9ng h\u01a1n. Trong b\u1ec3 ph\u1ea3n \u1ee9ng, c\u00e1c v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tr\u1ed9n l\u1eabn ho\u00e0n to\u00e0n, do \u0111\u00f3 nhi\u1ec7t \u0111\u1ed9 ph\u1ea3n \u1ee9ng \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 n\u00f3 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c v\u1eadn h\u00e0nh theo c\u00e1c ph\u00e2n v\u00f9ng \u0111\u1ec3 m\u1ed7i v\u00f9ng ph\u1ea3n \u1ee9ng c\u00f3 nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau, do \u0111\u00f3 thu \u0111\u01b0\u1ee3c polyetylen c\u00f3 ph\u00e2n b\u1ed1 tr\u1ecdng l\u01b0\u1ee3ng ph\u00e2n t\u1eed h\u1eb9p.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u0110\u01b0\u1eddng k\u00ednh trong c\u1ee7a l\u00f2 ph\u1ea3n \u1ee9ng tr\u00f9ng h\u1ee3p h\u00ecnh \u1ed1ng th\u01b0\u1eddng l\u00e0 \u1ed1ng th\u00e9p h\u1ee3p kim cao \u00e1p m\u1ea3nh mai c\u00f3 \u0111\u01b0\u1eddng k\u00ednh trong t\u1eeb 2,5 ~ 2,7cm. \u0110\u1ec3 c\u1ea3i thi\u1ec7n n\u0103ng l\u1ef1c s\u1ea3n xu\u1ea5t m\u1ed9t d\u00e2y chuy\u1ec1n, \u0111\u01b0\u1eddng k\u00ednh \u1ed1ng \u0111\u01b0\u1ee3c t\u0103ng l\u00ean 5,0 ~ 7,5cm. T\u1ef7 l\u1ec7 \u0111\u01b0\u1eddng k\u00ednh tr\u00ean chi\u1ec1u d\u00e0i l\u00e0 1:250~1:40000 v\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a l\u00f2 ph\u1ea3n \u1ee9ng h\u00ecnh \u1ed1ng l\u00e0 900~1500m. \u00c1p su\u1ea5t ph\u1ea3n \u1ee9ng kho\u1ea3ng 200 ~ 350MPa, nhi\u1ec7t \u0111\u1ed9 l\u00e0 250 ~ 330oC, v\u1eadn t\u1ed1c ch\u1ea5t l\u1ecfng l\u00e0 10 ~ 15m \/ s, t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i m\u1ed9t l\u1ea7n l\u00e0 20% ~ 34% v\u00e0 c\u00f4ng su\u1ea5t s\u1ea3n xu\u1ea5t m\u1ed9t d\u00f2ng t\u1ed1i \u0111a l\u00e0 100.000 t\u1ea5n\/n\u0103m.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\"> H\u00ecnh d\u1ea1ng c\u1ee7a b\u1ec3 ph\u1ea3n \u1ee9ng c\u00f3 hai \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt: thanh m\u1ea3nh v\u00e0 m\u1eadp m\u1ea1p. T\u1ef7 l\u1ec7 \u0111\u01b0\u1eddng k\u00ednh trong tr\u00ean chi\u1ec1u d\u00e0i c\u1ee7a \u1ea5m tr\u00f9ng h\u1ee3p lo\u1ea1i m\u1ecfng l\u00e0 1:20 ~ 1:4, trong khi t\u1ef7 l\u1ec7 \u0111\u01b0\u1eddng k\u00ednh trong tr\u00ean chi\u1ec1u d\u00e0i c\u1ee7a lo\u1ea1i chunky l\u00e0 1:4 ~ 1:2 v\u00e0 \u00e1p su\u1ea5t ph\u1ea3n \u1ee9ng th\u01b0\u1eddng th\u1ea5p h\u01a1n t\u1ef7 l\u1ec7 \u0111\u00f3 c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p h\u00ecnh \u1ed1ng, l\u00e0 110 ~ 250MPa, nhi\u1ec7t \u0111\u1ed9 l\u00e0 130 ~ 280oC, t\u1ef7 l\u1ec7 chuy\u1ec3n \u0111\u1ed5i m\u1ed9t l\u1ea7n l\u00e0 20% ~ 25% v\u00e0 n\u0103ng l\u1ef1c s\u1ea3n xu\u1ea5t m\u1ed9t d\u00e2y chuy\u1ec1n t\u1ed1i \u0111a l\u00e0 180.000 t\u1ea5n \/ n\u0103m. Trong b\u1ec3 ph\u1ea3n \u1ee9ng, \u0111\u1ed9ng c\u01a1 \u0111i\u1ec1u khi\u1ec3n m\u00e1y khu\u1ea5y th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t trong b\u1ec3 \u0111\u1ec3 gi\u1ea3m b\u1edbt kh\u00f3 kh\u0103n trong vi\u1ec7c thi\u1ebft k\u1ebf ph\u1ed1t tr\u1ee5c c\u1ee7a tr\u1ee5c khu\u1ea5y. V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 ph\u1ed1t c\u01a1 kh\u00ed, \u0111\u1ed9ng c\u01a1 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t b\u00ean ngo\u00e0i \u1ea5m \u0111un n\u01b0\u1edbc. <\/span><\/p>\n<p><span style=\"font-size: 12pt;\">L\u00f2 ph\u1ea3n \u1ee9ng b\u1ec3 ch\u1ee9a \u0111\u00e3 \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng h\u01a1n n\u1eefa, l\u00f2 ph\u1ea3n \u1ee9ng c\u1ee7a c\u00f4ng ty ICI c\u00f3 dung t\u00edch 1000L, trong khi th\u1ec3 t\u00edch c\u1ee7a l\u00f2 ph\u1ea3n \u1ee9ng c\u1ee7a c\u00f4ng ty CdF c\u1ee7a Ph\u00e1p l\u00ean t\u1edbi 1600L, l\u00e0 m\u1ed9t trong nh\u1eefng l\u00f2 ph\u1ea3n \u1ee9ng l\u1edbn nh\u1ea5t tr\u00ean th\u1ebf gi\u1edbi. Theo th\u1ed1ng k\u00ea, 55% polyetylen \u00e1p su\u1ea5t cao tr\u00ean th\u1ebf gi\u1edbi \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1edfi l\u00f2 ph\u1ea3n \u1ee9ng h\u00ecnh \u1ed1ng v\u00e0 45% c\u00f2n l\u1ea1i \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1edfi l\u00f2 ph\u1ea3n \u1ee9ng b\u1ec3.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Hieu_suat_san_pham_hat_nhua_LDPE\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>Hi\u1ec7u su\u1ea5t s\u1ea3n ph\u1ea9m\u00a0 h\u1ea1t nh\u1ef1a LDPE<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a polyetylen m\u1eadt \u0111\u1ed9 th\u1ea5p nh\u01b0 sau:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\">(1) M\u00e0ng h\u01a1i tr\u1eafng \u0111\u1ee5c v\u00e0 trong su\u1ed1t, m\u1ec1m m\u1ea1i. \u0110\u1ed9 b\u1ec1n th\u1ea5p h\u01a1n so v\u1edbi polyetylen m\u1eadt \u0111\u1ed9 cao v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 va \u0111\u1eadp l\u1edbn h\u01a1n so v\u1edbi polyetylen m\u1eadt \u0111\u1ed9 cao.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">(2) Ch\u1ed1ng l\u1ea1nh, ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 th\u1ea5p v\u00e0 ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao. L\u1edbp m\u00e0ng d\u00e0y h\u01a1n c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c qu\u00e1 tr\u00ecnh kh\u1eed tr\u00f9ng ng\u00e2m trong n\u01b0\u1edbc n\u00f3ng \u1edf 90\u00b0C.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">(3) Ch\u1ed1ng \u1ea9m t\u1ed1t, t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc \u1ed5n \u0111\u1ecbnh, kh\u00f4ng tan trong dung m\u00f4i th\u00f4ng th\u01b0\u1eddng.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">(4) N\u00f3 c\u00f3 \u0111\u1ed9 tho\u00e1ng kh\u00ed t\u01b0\u01a1ng \u0111\u1ed1i cao n\u00ean khi d\u00f9ng l\u00e0m bao b\u00ec th\u1ef1c ph\u1ea9m d\u1ec5 b\u1ecb oxy h\u00f3a, th\u1eddi gian b\u1ea3o qu\u1ea3n \u0111\u1ed3 b\u00ean trong kh\u00f4ng \u0111\u01b0\u1ee3c qu\u00e1 l\u00e2u.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">(5) Kh\u1ea3 n\u0103ng ch\u1ed1ng d\u1ea7u k\u00e9m v\u00e0 s\u1ea3n ph\u1ea9m c\u00f3 th\u1ec3 b\u1ecb ph\u1ed3ng l\u00ean t\u1eeb t\u1eeb. Khi \u0111\u00f3ng g\u00f3i th\u1ef1c ph\u1ea9m c\u00f3 ch\u1ee9a ch\u1ea5t b\u00e9o, th\u1ef1c ph\u1ea9m s\u1ebd c\u00f3 h\u01b0\u01a1ng v\u1ecb hala sau khi b\u1ea3o qu\u1ea3n l\u00e2u d\u00e0i.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">(6) N\u00f3 s\u1ebd b\u1ecb l\u00e3o h\u00f3a d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a tia c\u1ef1c t\u00edm v\u00e0 nhi\u1ec7t trong m\u1ed9t th\u1eddi gian d\u00e0i, \u0111i\u1ec1u n\u00e0y s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 t\u00ednh ch\u1ea5t \u0111i\u1ec7n m\u00f4i c\u1ee7a n\u00f3.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">(7) \u0110i\u1ec3m n\u00f3ng ch\u1ea3y l\u00e0 110 ~ 115\u2103, nhi\u1ec7t \u0111\u1ed9 x\u1eed l\u00fd l\u00e0 150 ~ 210\u2103, n\u1ebfu \u1edf trong kh\u00ed tr\u01a1, nhi\u1ec7t \u0111\u1ed9 c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 300\u2103 m\u00e0 v\u1eabn \u1ed5n \u0111\u1ecbnh. Tuy nhi\u00ean, s\u1ef1 tan ch\u1ea3y d\u1ec5 b\u1ecb ph\u00e2n h\u1ee7y khi ti\u1ebfp x\u00fac v\u1edbi oxy.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Ung_dung_hat_nhua_LDPE\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>\u1ee8ng d\u1ee5ng h\u1ea1t nh\u1ef1a LDPE<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">Ph\u1ea1m vi \u1ee9ng d\u1ee5ng c\u1ee7a polyetylen m\u1eadt \u0111\u1ed9 th\u1ea5p: th\u00edch h\u1ee3p cho bao b\u00ec th\u1ef1c ph\u1ea9m nh\u01b0 gia v\u1ecb, b\u00e1nh ng\u1ecdt, \u0111\u01b0\u1eddng, k\u1eb9o tr\u00e1i c\u00e2y, b\u00e1nh quy, s\u1eefa b\u1ed9t, tr\u00e0, ch\u1ec9 nha khoa c\u00e1. Bao b\u00ec d\u01b0\u1ee3c ph\u1ea9m nh\u01b0 vi\u00ean n\u00e9n v\u00e0 b\u1ed9t, v\u00e0 bao b\u00ec s\u1ea3n ph\u1ea9m s\u1ee3i nh\u01b0 \u00e1o s\u01a1 mi, qu\u1ea7n \u00e1o, s\u1ea3n ph\u1ea9m b\u00f4ng d\u1ec7t kim v\u00e0 s\u1ea3n ph\u1ea9m s\u1ee3i h\u00f3a h\u1ecdc. \u0110\u00f3ng g\u00f3i b\u1ed9t gi\u1eb7t, ch\u1ea5t t\u1ea9y r\u1eeda, m\u1ef9 ph\u1ea9m v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m h\u00f3a ch\u1ea5t h\u00e0ng ng\u00e0y kh\u00e1c. Do t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc k\u00e9m c\u1ee7a<span style=\"color: #99cc00;\"> <a style=\"color: #99cc00;\" href=\"https:\/\/dpm360.com\/san-pham\/mang-pe\/\">m\u00e0ng PE<\/a><\/span> m\u1ed9t l\u1edbp, n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m l\u1edbp b\u00ean trong c\u1ee7a t\u00fai \u0111\u00f3ng g\u00f3i composite, t\u1ee9c l\u00e0 ch\u1ea5t n\u1ec1n h\u00e0n nhi\u1ec7t c\u1ee7a m\u00e0ng composite nhi\u1ec1u l\u1edbp.\u00a0<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Trien_vong_phat_trien_hat_nhua_LDPE\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>Tri\u1ec3n v\u1ecdng ph\u00e1t tri\u1ec3n h\u1ea1t nh\u1ef1a LDPE<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">Polyetylen l\u00e0 m\u1ed9t polyme k\u1ebft tinh. Theo ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh polyetylen \u00e1p su\u1ea5t cao, polyetylen \u00e1p su\u1ea5t trung b\u00ecnh v\u00e0 polyetylen \u00e1p su\u1ea5t th\u1ea5p, t\u01b0\u01a1ng \u1ee9ng thu \u0111\u01b0\u1ee3c polyetylen m\u1eadt \u0111\u1ed9 th\u1ea5p (LDPE), polyetylen m\u1eadt \u0111\u1ed9 trung b\u00ecnh (MDPE) v\u00e0 polyetylen m\u1eadt \u0111\u1ed9 cao. (HDPE). B\u1edfi v\u00ec hi\u1ec7u su\u1ea5t c\u1ee7a polyetylen m\u1eadt \u0111\u1ed9 th\u1ea5p tuy\u1ebfn t\u00ednh t\u1ed1t h\u01a1n so v\u1edbi polyetylen m\u1eadt \u0111\u1ed9 th\u1ea5p th\u00f4ng th\u01b0\u1eddng, t\u1ed1c \u0111\u1ed9 ph\u00e1t tri\u1ec3n t\u01b0\u01a1ng \u0111\u1ed1i nhanh v\u00e0 c\u00f3 xu h\u01b0\u1edbng thay th\u1ebf polyetylen m\u1eadt \u0111\u1ed9 th\u1ea5p.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Nh\u1ef1a polyetylen cho \u00f4 t\u00f4 chi\u1ebfm 5-6% t\u1ed5ng l\u01b0\u1ee3ng nh\u1ef1a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u00f4 t\u00f4, \u0111\u1ee9ng th\u1ee9 n\u0103m sau polyvinyl clorua, h\u1ea1t nh\u1ef1a ABS, <span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/dpm360.com\/san-pham\/hat-nhua-pp\/\">h\u1ea1t nh\u1ef1a PP<\/a><\/span> (polypropylen) v\u00e0 polyurethane. Polyetylen ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t \u1ed1ng d\u1eabn kh\u00ed v\u00e0 c\u00e1c b\u1ec3 ch\u1ee9a kh\u00e1c nhau. Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, l\u01b0\u1ee3ng polyetylen \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u00f4 t\u00f4 v\u1ec1 c\u01a1 b\u1ea3n kh\u00f4ng t\u0103ng, nh\u01b0ng l\u00e0n s\u00f3ng tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9 \u0111\u00e3 th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh h\u00f3a d\u1ebbo c\u1ee7a b\u00ecnh x\u0103ng v\u00e0 polyetylen m\u1eadt \u0111\u1ed9 cao c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng ph\u00e2n t\u1eed cao (HMWH-DPE) l\u00e0 v\u1eadt li\u1ec7u ch\u00ednh. <\/span><\/p>\n<p><span style=\"font-size: 12pt;\">B\u00ecnh x\u0103ng b\u1eb1ng nh\u1ef1a \u0111\u00e3 ch\u00ednh th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u00ean \u00f4 t\u00f4 \u1edf ch\u00e2u \u00c2u. C\u1ed9ng h\u00f2a Li\u00ean bang \u0110\u1ee9c \u0111\u00e3 th\u1ef1c hi\u1ec7n c\u00f4ng nghi\u1ec7p h\u00f3a b\u00ecnh x\u0103ng nh\u1ef1a s\u1edbm h\u01a1n. C\u00f4ng vi\u1ec7c nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a Nh\u1eadt B\u1ea3n \u0111ang ti\u1ebfn tri\u1ec3n nhanh ch\u00f3ng, nh\u01b0ng ng\u00e0nh c\u00f4ng nghi\u1ec7p \u00f4 t\u00f4 c\u00f3 th\u00e1i \u0111\u1ed9 th\u1eadn tr\u1ecdng \u0111\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh c\u00f4ng nghi\u1ec7p h\u00f3a c\u1ee7a m\u00ecnh, \u0111\u1eb7c bi\u1ec7t ch\u00fa \u00fd \u0111\u1ebfn xu h\u01b0\u1edbng c\u1ee7a Hoa K\u1ef3. Polyetylen \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ng\u00e0nh c\u00f4ng nghi\u1ec7p \u00f4 t\u00f4 v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 polyetylen \u00e1p su\u1ea5t trung b\u00ecnh v\u00e0 th\u1ea5p.\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>M\u1ee5c l\u1ee5c H\u1ea1t nh\u1ef1a LDPE nguy\u00ean sinhT\u1ed5ng quan v\u1ec1 s\u1ea3n ph\u1ea9m h\u1ea1t nh\u1ef1a LDPEPh\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t h\u1ea1t nh\u1ef1aT\u00ednh n\u0103ng s\u1ea3n xu\u1ea5tHi\u1ec7u su\u1ea5t s\u1ea3n ph\u1ea9m\u00a0 h\u1ea1t nh\u1ef1a LDPE\u1ee8ng d\u1ee5ng h\u1ea1t nh\u1ef1a LDPETri\u1ec3n v\u1ecdng ph\u00e1t tri\u1ec3n h\u1ea1t nh\u1ef1a LDPE H\u1ea1t nh\u1ef1a LDPE nguy\u00ean sinh H\u1ea1t nh\u1ef1a LDPE l\u00e0 Polyetylen m\u1eadt \u0111\u1ed9 th\u1ea5p, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/dpm360.com\/san-pham\/hat-nhua-ldpe\/\" class=\"more-link\">\u0110\u1ecdc ti\u1ebfp<span class=\"screen-reader-text\"> &#8220;H\u1ea1t nh\u1ef1a LDPE nguy\u00ean sinh&#8221;<\/span><\/a><\/p>\n","protected":false},"featured_media":4488,"comment_status":"open","ping_status":"closed","template":"","meta":[],"yoast_head":"\n<title>H\u1ea1t nh\u1ef1a LDPE nguy\u00ean sinh - 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