{"id":4369,"date":"2022-12-31T08:06:19","date_gmt":"2022-12-31T01:06:19","guid":{"rendered":"https:\/\/dpm360.com\/?post_type=product&#038;p=4369"},"modified":"2023-06-02T18:02:02","modified_gmt":"2023-06-02T11:02:02","slug":"hat-nhua-pmma","status":"publish","type":"product","link":"https:\/\/dpm360.com\/san-pham\/hat-nhua-pmma\/","title":{"rendered":"H\u1ea1t nh\u1ef1a PMMA"},"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-pmma\/#Hat_nhua_PMMA\" title=\"H\u1ea1t nh\u1ef1a PMMA\">H\u1ea1t nh\u1ef1a PMMA<\/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-pmma\/#Thong_tin_co_ban_hat_nhua_PMMA\" title=\"Th\u00f4ng tin c\u01a1 b\u1ea3n h\u1ea1t nh\u1ef1a PMMA\">Th\u00f4ng tin c\u01a1 b\u1ea3n h\u1ea1t nh\u1ef1a PMMA<\/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-pmma\/#Dac_tinh_hat_nhua_PMMA\" title=\"\u0110\u1eb7c t\u00ednh h\u1ea1t nh\u1ef1a PMMA\">\u0110\u1eb7c t\u00ednh h\u1ea1t nh\u1ef1a PMMA<\/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-pmma\/#Tinh_chat_hoa_hoc\" title=\"T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc\">T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc<\/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-pmma\/#Lich_su_hat_nhua_PMMA\" title=\"L\u1ecbch s\u1eed h\u1ea1t nh\u1ef1a PMMA\">L\u1ecbch s\u1eed h\u1ea1t nh\u1ef1a PMMA<\/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-pmma\/#Thuoc_tinh_nguyen_lieu\" title=\"Thu\u1ed9c t\u00ednh nguy\u00ean li\u1ec7u\">Thu\u1ed9c t\u00ednh nguy\u00ean li\u1ec7u<\/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-pmma\/#Muc_dich_su_dung_hat_nhua_PMMA\" title=\"M\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng h\u1ea1t nh\u1ef1a PMMA\">M\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng h\u1ea1t nh\u1ef1a PMMA<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Hat_nhua_PMMA\"><\/span><span style=\"color: #008000; font-size: 12pt;\"><em><strong>H\u1ea1t nh\u1ef1a PMMA<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-size: 12pt;\">H\u1ea1t nh\u1ef1a PMMA Polymethyl methacrylate (PMMA) l\u00e0 m\u1ed9t lo\u1ea1i polymer cao ph\u00e2n t\u1eed, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 acrylic ho\u1eb7c plexiglass, c\u00f3 \u01b0u \u0111i\u1ec3m l\u00e0 \u0111\u1ed9 trong su\u1ed1t cao, gi\u00e1 r\u1ebb, d\u1ec5 gia c\u00f4ng, l\u00e0 v\u1eadt li\u1ec7u thay th\u1ebf th\u1ee7y tinh th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">V\u00e0o ng\u00e0y 27 th\u00e1ng 10 n\u0103m 2017, danh s\u00e1ch c\u00e1c ch\u1ea5t g\u00e2y ung th\u01b0 do C\u01a1 quan Nghi\u00ean c\u1ee9u Ung th\u01b0 Qu\u1ed1c t\u1ebf c\u1ee7a T\u1ed5 ch\u1ee9c Y t\u1ebf Th\u1ebf gi\u1edbi c\u00f4ng b\u1ed1 ban \u0111\u1ea7u \u0111\u01b0\u1ee3c t\u1ed5ng h\u1ee3p \u0111\u1ec3 tham kh\u1ea3o v\u00e0 polymethyl methacrylate \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o danh s\u00e1ch ba lo\u1ea1i ch\u1ea5t g\u00e2y ung th\u01b0.<\/span><\/p>\n<figure id=\"attachment_4370\" aria-describedby=\"caption-attachment-4370\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"wp-image-4370 size-medium\" src=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/hat-nhua-pmma-300x300.jpg\" alt=\"H\u1ea1t nh\u1ef1a PMMA\" width=\"300\" height=\"300\" srcset=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/hat-nhua-pmma-300x300.jpg 300w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/hat-nhua-pmma-150x150.jpg 150w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/hat-nhua-pmma-100x100.jpg 100w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/hat-nhua-pmma-600x600.jpg 600w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/hat-nhua-pmma.jpg 662w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-4370\" class=\"wp-caption-text\"><span style=\"font-size: 12pt;\">H\u1ea1t nh\u1ef1a PMMA<\/span><\/figcaption><\/figure>\n<p><span style=\"font-size: 12pt;\">T\u00ean ti\u1ebfng Vi\u1ec7t Nam polymethyl methacrylate t\u00ean n\u01b0\u1edbc ngo\u00e0i polymethyl methacrylate (PMMA) b\u00ed danh plexiglass, acrylic, poly [1-(methoxycarbonylmethyl) ethylene] c\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc (C5O2H8) nCAS s\u1ed1 \u0111\u0103ng k\u00fd 9011-14-7EINECS s\u1ed1 \u0111\u0103ng k\u00fd 618-466-4 \u0110i\u1ec3m n\u00f3ng ch\u1ea3y 150 \u2103 N\u01b0\u1edbc -h\u00f2a tan kh\u00f4ng h\u00f2a tan. T\u1ef7 tr\u1ecdng 1,15 \u0111\u1ebfn 1,19 g\/cm\u00b3. \u0110i\u1ec3m ch\u1edbp ch\u00e1y 250 \u2103; m\u00f4 t\u1ea3 an to\u00e0n S24\/25; bi\u1ec3u t\u01b0\u1ee3ng nguy hi\u1ec3m Xn; m\u00f4 t\u1ea3 nguy hi\u1ec3m R20\/22.<\/span><\/p>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 100%; text-align: center;\"><span style=\"color: #0000ff; font-size: 12pt;\"><em><strong>B\u00e0i vi\u1ebft c\u00f3 n\u1ed9i dung c\u00f9ng ch\u1ee7 \u0111\u1ec1 v\u1ec1 h\u1ea1t nh\u1ef1a<\/strong><\/em><\/span><\/p>\n<p><span style=\"color: #ff6600; font-size: 12pt;\"><a style=\"color: #ff6600;\" href=\"https:\/\/dpm360.com\/san-pham\/hat-nhua-hips\/\">H\u1ea1t nh\u1ef1a Hips<\/a><\/span><\/p>\n<p><span style=\"color: #000080; font-size: 12pt;\"><a style=\"color: #000080;\" href=\"https:\/\/dpm360.com\/san-pham\/hat-nhua-san\/\">H\u1ea1t nh\u1ef1a SAN<\/a><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span class=\"ez-toc-section\" id=\"Thong_tin_co_ban_hat_nhua_PMMA\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>Th\u00f4ng tin c\u01a1 b\u1ea3n h\u1ea1t nh\u1ef1a PMMA<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">Polymethyl methacrylate (poly(methylmethacrylate), vi\u1ebft t\u1eaft l\u00e0 PMMA), c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 acrylic, acrylic (ti\u1ebfng Anh Acrylic) ho\u1eb7c plexiglass, Lucite (t\u00ean th\u01b0\u01a1ng m\u1ea1i), th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 keo agaric v\u00e0 c\u00f3 \u01b0u \u0111i\u1ec3m l\u00e0 cao trong su\u1ed1t, gi\u00e1 th\u1ea5p v\u00e0 d\u1ec5 gia c\u00f4ng, n\u00f3 l\u00e0 v\u1eadt li\u1ec7u thay th\u1ebf th\u1ee7y tinh th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. Monome c\u1ee7a polymetyl metacryit l\u00e0 metyl metacryit (MMA, monome acrylic).<\/span><\/p>\n<figure id=\"attachment_4371\" aria-describedby=\"caption-attachment-4371\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"wp-image-4371 size-medium\" src=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/bot-hat-nhua-pmma-300x300.jpg\" alt=\"B\u1ed9t h\u1ea1t nh\u1ef1a PMMA\" width=\"300\" height=\"300\" srcset=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/bot-hat-nhua-pmma-300x300.jpg 300w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/bot-hat-nhua-pmma-150x150.jpg 150w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/bot-hat-nhua-pmma-100x100.jpg 100w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/bot-hat-nhua-pmma-600x600.jpg 600w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/bot-hat-nhua-pmma.jpg 750w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-4371\" class=\"wp-caption-text\"><span style=\"font-size: 12pt;\">B\u1ed9t h\u1ea1t nh\u1ef1a PMMA<\/span><\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Dac_tinh_hat_nhua_PMMA\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>\u0110\u1eb7c t\u00ednh h\u1ea1t nh\u1ef1a PMMA<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">Polymethyl methacrylate th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t thay th\u1ebf cho th\u1ee7y tinh, c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a ch\u1ea5t n\u00e0y nh\u01b0 sau:<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">1. M\u1eadt \u0111\u1ed9 PMMA th\u1ea5p h\u01a1n th\u1ee7y tinh: M\u1eadt \u0111\u1ed9 PMMA kho\u1ea3ng 1,15-1,19g\/cm3, b\u1eb1ng m\u1ed9t n\u1eeda th\u1ee7y tinh (2,40-2,80g\/cm3) v\u00e0 43% kim lo\u1ea1i nh\u00f4m (thu\u1ed9c nh\u00f3m kim lo\u1ea1i nh\u1eb9).<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">2. \u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc c\u1ee7a PMMA cao: tr\u1ecdng l\u01b0\u1ee3ng ph\u00e2n t\u1eed t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a PMMA l\u00e0 kho\u1ea3ng 2 tri\u1ec7u. N\u00f3 l\u00e0 m\u1ed9t polyme chu\u1ed7i d\u00e0i v\u00e0 chu\u1ed7i t\u1ea1o th\u00e0nh ph\u00e2n t\u1eed r\u1ea5t m\u1ec1m. Do \u0111\u00f3, PMMA c\u00f3 \u0111\u1ed9 b\u1ec1n, \u0111\u1ed9 b\u1ec1n k\u00e9o v\u00e0 t\u00e1c \u0111\u1ed9ng t\u01b0\u01a1ng \u0111\u1ed1i cao kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c c\u1ee7a k\u00ednh cao g\u1ea5p 7 \u0111\u1ebfn 18 l\u1ea7n so v\u1edbi k\u00ednh th\u00f4ng th\u01b0\u1eddng. C\u00f3 m\u1ed9t t\u1ea5m plexiglass \u0111\u00e3 \u0111\u01b0\u1ee3c nung n\u00f3ng v\u00e0 k\u00e9o d\u00e0i, trong \u0111\u00f3 c\u00e1c ph\u00e2n t\u1eed \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp r\u1ea5t tr\u1eadt t\u1ef1, gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 d\u1ebbo dai c\u1ee7a v\u1eadt li\u1ec7u.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u0110inh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00f3ng t\u1ea5m mica n\u00e0y, ngay c\u1ea3 khi m\u00f3ng xuy\u00ean qua, s\u1ebd kh\u00f4ng c\u00f3 v\u1ebft n\u1ee9t. Lo\u1ea1i plexiglass n\u00e0y s\u1ebd kh\u00f4ng b\u1ecb v\u1ee1 th\u00e0nh t\u1eebng m\u1ea3nh sau khi b\u1ecb \u0111\u1ea1n xuy\u00ean qua. Do \u0111\u00f3, PMMA k\u00e9o d\u00e0i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m k\u00ednh ch\u1ed1ng \u0111\u1ea1n v\u00e0 c\u0169ng nh\u01b0 t\u00e1n tr\u00ean m\u00e1y bay qu\u00e2n s\u1ef1.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">3. \u0110i\u1ec3m n\u00f3ng ch\u1ea3y c\u1ee7a PMMA th\u1ea5p h\u01a1n, th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a th\u1ee7y tinh, kho\u1ea3ng 1000 \u0111\u1ed9.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">4. PMMA c\u00f3 \u0111\u1ed9 truy\u1ec1n \u00e1nh s\u00e1ng cao<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">(1) \u00c1nh s\u00e1ng kh\u1ea3 ki\u1ebfn: PMMA hi\u1ec7n l\u00e0 v\u1eadt li\u1ec7u polymer trong su\u1ed1t tuy\u1ec7t v\u1eddi nh\u1ea5t, v\u1edbi \u0111\u1ed9 truy\u1ec1n \u00e1nh s\u00e1ng l\u00e0 92%, cao h\u01a1n so v\u1edbi th\u1ee7y tinh.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">(2) Tia c\u1ef1c t\u00edm: Th\u1ea1ch anh ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 xuy\u00ean qua tia c\u1ef1c t\u00edm, nh\u01b0ng gi\u00e1 cao, th\u1ee7y tinh th\u00f4ng th\u01b0\u1eddng ch\u1ec9 c\u00f3 th\u1ec3 xuy\u00ean qua 0,6% tia c\u1ef1c t\u00edm.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">PMMA c\u00f3 th\u1ec3 l\u1ecdc hi\u1ec7u qu\u1ea3 \u00e1nh s\u00e1ng c\u1ef1c t\u00edm c\u00f3 b\u01b0\u1edbc s\u00f3ng nh\u1ecf h\u01a1n 300nm, nh\u01b0ng hi\u1ec7u qu\u1ea3 l\u1ecdc gi\u1eefa 300nm v\u00e0 400nm l\u00e0 k\u00e9m. M\u1ed9t s\u1ed1 nh\u00e0 s\u1ea3n xu\u1ea5t ph\u1ee7 l\u00ean b\u1ec1 m\u1eb7t PMMA \u0111\u1ec3 t\u0103ng t\u00e1c d\u1ee5ng v\u00e0 \u0111\u1eb7c t\u00ednh l\u1ecdc tia c\u1ef1c t\u00edm 300nm \u0111\u1ebfn 400nm c\u1ee7a n\u00f3. M\u1eb7t kh\u00e1c, PMMA c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh t\u1ed1t h\u01a1n so v\u1edbi polycarbonate trong \u0111i\u1ec1u ki\u1ec7n chi\u1ebfu tia c\u1ef1c t\u00edm.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">(3) Tia h\u1ed3ng ngo\u1ea1i: PMMA cho ph\u00e9p tia h\u1ed3ng ngo\u1ea1i (IR) c\u00f3 b\u01b0\u1edbc s\u00f3ng nh\u1ecf h\u01a1n 2800nm \u200b\u200b\u0111i qua. IR b\u01b0\u1edbc s\u00f3ng d\u00e0i h\u01a1n, d\u01b0\u1edbi 25.000nm, v\u1ec1 c\u01a1 b\u1ea3n b\u1ecb ch\u1eb7n. C\u00f3 m\u1ed9t PMMA m\u00e0u \u0111\u1eb7c bi\u1ec7t cho ph\u00e9p c\u00e1c b\u01b0\u1edbc s\u00f3ng IR c\u1ee5 th\u1ec3 \u0111i qua trong khi ch\u1eb7n \u00e1nh s\u00e1ng kh\u1ea3 ki\u1ebfn \u200b\u200b(\u0111\u1ed1i v\u1edbi \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa ho\u1eb7c c\u1ea3m bi\u1ebfn nhi\u1ec7t, v.v.).<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">(4) Nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n th\u1ee7y tinh c\u1ee7a PMMA l\u00e0 kho\u1ea3ng 105\u00b0C.<\/span><\/p>\n<figure id=\"attachment_4372\" aria-describedby=\"caption-attachment-4372\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"wp-image-4372 size-medium\" src=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/hat-nhua-pmma-nguyen-sinh-300x300.jpg\" alt=\"H\u1ea1t nh\u1ef1a PMMA nguy\u00ean sinh trong\" width=\"300\" height=\"300\" srcset=\"https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/hat-nhua-pmma-nguyen-sinh-300x300.jpg 300w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/hat-nhua-pmma-nguyen-sinh-150x150.jpg 150w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/hat-nhua-pmma-nguyen-sinh-100x100.jpg 100w, https:\/\/dpm360.com\/wp-content\/uploads\/2022\/12\/hat-nhua-pmma-nguyen-sinh.jpg 522w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-4372\" class=\"wp-caption-text\">H\u1ea1t nh\u1ef1a PMMA nguy\u00ean sinh trong<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Tinh_chat_hoa_hoc\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">Do chu\u1ed7i ph\u00e2n nh\u00e1nh l\u1edbn, \u0111\u1ed9 nh\u1edbt c\u1ee7a polymethyl methacrylate cao n\u00ean t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd t\u01b0\u01a1ng \u0111\u1ed1i ch\u1eadm khi s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd nhi\u1ec7t, Plexiglass kh\u00f4ng ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1eaft b\u1eb1ng m\u00e1y ti\u1ec7n, khoan b\u1eb1ng m\u00e1y khoan m\u00e0 c\u00f2n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi acetone, C\u00e1c d\u1ee5ng c\u1ee5 nh\u01b0 chloroform \u0111\u01b0\u1ee3c li\u00ean k\u1ebft th\u00e0nh nhi\u1ec1u h\u00ecnh d\u1ea1ng kh\u00e1c nhau c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd th\u00e0nh nhi\u1ec1u s\u1ea3n ph\u1ea9m kh\u00e1c nhau, t\u1eeb t\u00e1n m\u00e1y bay l\u1edbn \u0111\u1ebfn r\u0103ng gi\u1ea3 nh\u1ecf v\u00e0 khay r\u0103ng b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fac nh\u1ef1a nh\u01b0 \u0111\u00fac th\u1ed5i, phun v\u00e0 \u00e9p \u0111\u00f9n.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Cyanoacrylate, methylene chloride ho\u1eb7c chloroform \u0111\u1ec1u c\u00f3 th\u1ec3 h\u00f2a tan m\u1ed9t ch\u00fat t\u1ea5m plexiglass, sau \u0111\u00f3 li\u00ean k\u1ebft ch\u1eafc ch\u1eafn hai m\u1ea3nh t\u1ea5m plexiglass l\u1ea1i v\u1edbi nhau.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u0110\u1ec3 s\u1ea3n xu\u1ea5t 1 kg PMMA, c\u1ea7n kho\u1ea3ng 2 kg x\u0103ng d\u1ea7u. Trong \u0111i\u1ec1u ki\u1ec7n c\u00f3 oxy, PMMA b\u1eaft \u0111\u1ea7u ch\u00e1y \u1edf 458\u00b0C v\u00e0 t\u1ea1o ra carbon dioxide, n\u01b0\u1edbc, carbon monoxide v\u00e0 m\u1ed9t s\u1ed1 h\u1ee3p ch\u1ea5t ph\u00e2n t\u1eed th\u1ea5p bao g\u1ed3m c\u1ea3 formaldehyde sau khi \u0111\u1ed1t ch\u00e1y.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Xem th\u00eam: <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/dpm360.com\/san-pham\/hat-nhua-pet\/\">H\u1ea1t nh\u1ef1a PET<\/a><\/span><\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Lich_su_hat_nhua_PMMA\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>L\u1ecbch s\u1eed h\u1ea1t nh\u1ef1a PMMA<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><span style=\"font-size: 12pt;\">N\u0103m 1902, nh\u00e0 h\u00f3a h\u1ecdc ng\u01b0\u1eddi \u0110\u1ee9c O. R\u00f6hm \u0111\u00e3 t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c PMMA. Ban \u0111\u1ea7u O.R\u00f6hm ch\u1ec9 mu\u1ed1n s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u n\u00e0y cho ch\u1ea5t k\u1ebft d\u00ednh.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">N\u0103m 1936, PMMA b\u1eaft \u0111\u1ea7u \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Thuoc_tinh_nguyen_lieu\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>Thu\u1ed9c t\u00ednh nguy\u00ean li\u1ec7u<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><span style=\"font-size: 12pt;\">1. Kh\u00f4ng m\u00e0u v\u00e0 trong su\u1ed1t, v\u1edbi \u0111\u1ed9 truy\u1ec1n \u00e1nh s\u00e1ng 90% -92%, \u0111\u1ed9 b\u1ec1n cao, l\u1edbn h\u01a1n 10 l\u1ea7n so v\u1edbi th\u1ee7y tinh silicon.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">2. Quang h\u1ecdc t\u1ed1t, c\u00e1ch nhi\u1ec7t, kh\u1ea3 n\u0103ng x\u1eed l\u00fd v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">3. H\u00f2a tan trong c\u00e1c dung m\u00f4i h\u1eefu c\u01a1 nh\u01b0 carbon tetrachloride, benzen, toluene, dichloroethane, chloroform v\u00e0 acetone.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">4. N\u00f3 c\u00f3 \u0111\u1ed9 trong su\u1ed1t v\u00e0 \u0111\u1ed9 s\u00e1ng cao, kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t t\u1ed1t, c\u00f3 \u0111\u1eb7c t\u00ednh d\u1ebbo dai, \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 c\u1ee9ng, nhi\u1ec7t \u0111\u1ed9 bi\u1ebfn d\u1ea1ng nhi\u1ec7t l\u00e0 80\u00b0C, \u0111\u1ed9 b\u1ec1n u\u1ed1n l\u00e0 110Mpa.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">5. M\u1eadt \u0111\u1ed9 l\u00e0 1,14-1,20g \/ cm3, nhi\u1ec7t \u0111\u1ed9 bi\u1ebfn d\u1ea1ng l\u00e0 76-116oC v\u00e0 t\u1ef7 l\u1ec7 co ng\u00f3t c\u1ee7a khu\u00f4n l\u00e0 0,2-0,8%.<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">6. H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf tuy\u1ebfn t\u00ednh l\u00e0 0,00005-0,00009\/\u2103 v\u00e0 nhi\u1ec7t \u0111\u1ed9 bi\u1ebfn d\u1ea1ng nhi\u1ec7t l\u00e0 68-69\u2103 (74-107\u2103).<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Muc_dich_su_dung_hat_nhua_PMMA\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>M\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng h\u1ea1t nh\u1ef1a PMMA<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">PMMA c\u00f3 \u01b0u \u0111i\u1ec3m l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9, gi\u00e1 th\u1ea5p v\u00e0 d\u1ec5 \u0111\u00fac. H\u00f2a tan trong c\u00e1c dung m\u00f4i h\u1eefu c\u01a1 nh\u01b0 anisole, c\u00f3 th\u1ec3 t\u1ea1o th\u00e0nh m\u00e0ng t\u1ed1t v\u00e0 t\u00ednh ch\u1ea5t \u0111i\u1ec7n m\u00f4i t\u1ed1t, \u0111\u1ed3ng th\u1eddi c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m l\u1edbp \u0111i\u1ec7n m\u00f4i c\u1ee7a \u1ed1ng hi\u1ec7u \u1ee9ng tr\u01b0\u1eddng h\u1eefu c\u01a1.\u00a0<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">C\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fac c\u1ee7a n\u00f3 bao g\u1ed3m \u0111\u00fac, \u00e9p phun, gia c\u00f4ng, \u00e9p n\u00f3ng. \u0110\u1eb7c bi\u1ec7t, \u00e9p phun c\u00f3 th\u1ec3 s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t v\u1edbi quy tr\u00ecnh ch\u1ebf t\u1ea1o \u0111\u01a1n gi\u1ea3n v\u00e0 gi\u00e1 th\u00e0nh r\u1ebb. Do \u0111\u00f3, \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 ng\u00e0y c\u00e0ng tr\u1edf n\u00ean r\u1ed9ng r\u00e3i h\u01a1n v\u00e0 n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c b\u1ed9 ph\u1eadn thi\u1ebft b\u1ecb \u0111o \u0111\u1ea1c, \u0111\u00e8n \u00f4 t\u00f4, th\u1ea5u k\u00ednh quang h\u1ecdc v\u00e0 \u1ed1ng d\u1eabn trong su\u1ed1t.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u1ee8ng d\u1ee5ng c\u1ee7a acrylic plexiglass (acrylic) trong ng\u00e0nh x\u00e2y d\u1ef1ng trong x\u00e2y d\u1ef1ng, acrylic plexiglass (acrylic) ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong chi\u1ebfu s\u00e1ng ki\u1ebfn \u200b\u200b\u200b\u200btr\u00fac, m\u00e1i nh\u00e0 trong su\u1ed1t, m\u00e1i nh\u00e0, bu\u1ed3ng \u0111i\u1ec7n tho\u1ea1i, c\u1ea7u thang v\u00e0 t\u1ea5m t\u01b0\u1eddng ph\u00f2ng. V\u1ec1 thi\u1ebft b\u1ecb v\u1ec7 sinh, c\u00f3 l\u00e0 b\u1ed3n t\u1eafm, ch\u1eadu r\u1eeda m\u1eb7t, b\u00e0n trang \u0111i\u1ec3m v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m kh\u00e1c. Vi\u1ec7c ph\u00e1t tri\u1ec3n \u1ee9ng d\u1ee5ng trong b\u00f3ng \u0111\u00e8n chi\u1ebfu s\u00e1ng \u0111\u01b0\u1eddng cao t\u1ed1c v\u00e0 \u0111\u01b0\u1eddng b\u1ed9 cao c\u1ea5p v\u00e0 \u0111\u00e8n \u00f4 t\u00f4 c\u0169ng kh\u00e1 nhanh. Trong s\u1ed1 \u0111\u00f3, th\u1ecb tr\u01b0\u1eddng chi\u1ebfu s\u00e1ng ki\u1ebfn \u200b\u200b\u200b\u200btr\u00fac, b\u1ed3n t\u1eafm, h\u1ed9p \u0111\u00e8n qu\u1ea3ng c\u00e1o \u0111\u01b0\u1eddng ph\u1ed1 v\u00e0 b\u1ed1t \u0111i\u1ec7n tho\u1ea1i \u0111ang ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng, v\u1edbi d\u01b0 \u0111\u1ecba ph\u00e1t tri\u1ec3n trong t\u01b0\u01a1ng lai v\u00e0 tri\u1ec3n v\u1ecdng th\u1ecb tr\u01b0\u1eddng r\u1ea5t r\u1ed9ng.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>M\u1ee5c l\u1ee5c H\u1ea1t nh\u1ef1a PMMATh\u00f4ng tin c\u01a1 b\u1ea3n h\u1ea1t nh\u1ef1a PMMA\u0110\u1eb7c t\u00ednh h\u1ea1t nh\u1ef1a PMMAT\u00ednh ch\u1ea5t h\u00f3a h\u1ecdcL\u1ecbch s\u1eed h\u1ea1t nh\u1ef1a PMMAThu\u1ed9c t\u00ednh nguy\u00ean li\u1ec7uM\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng h\u1ea1t nh\u1ef1a PMMA H\u1ea1t nh\u1ef1a PMMA H\u1ea1t nh\u1ef1a PMMA Polymethyl methacrylate (PMMA) l\u00e0 m\u1ed9t lo\u1ea1i polymer cao ph\u00e2n t\u1eed, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 acrylic ho\u1eb7c plexiglass, c\u00f3 &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/dpm360.com\/san-pham\/hat-nhua-pmma\/\" class=\"more-link\">\u0110\u1ecdc ti\u1ebfp<span class=\"screen-reader-text\"> &#8220;H\u1ea1t nh\u1ef1a PMMA&#8221;<\/span><\/a><\/p>\n","protected":false},"featured_media":4370,"comment_status":"open","ping_status":"closed","template":"","meta":[],"yoast_head":"\n<title>H\u1ea1t nh\u1ef1a PMMA - 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