{"id":4469,"date":"2023-03-21T07:59:07","date_gmt":"2023-03-21T00:59:07","guid":{"rendered":"https:\/\/dpm360.com\/?post_type=product&#038;p=4469"},"modified":"2023-06-02T17:56:46","modified_gmt":"2023-06-02T10:56:46","slug":"hat-nhua-pom","status":"publish","type":"product","link":"https:\/\/dpm360.com\/san-pham\/hat-nhua-pom\/","title":{"rendered":"H\u1ea1t nh\u1ef1a POM"},"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-pom\/#Nguyen_lieu_hat_nhua_POM\" title=\"Nguy\u00ean li\u1ec7u h\u1ea1t nh\u1ef1a POM\">Nguy\u00ean li\u1ec7u h\u1ea1t nh\u1ef1a POM<\/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-pom\/#Nguyen_lieu_hat_nhua_POM_la_gi\" title=\"Nguy\u00ean li\u1ec7u h\u1ea1t nh\u1ef1a POM l\u00e0 g\u00ec?\">Nguy\u00ean li\u1ec7u h\u1ea1t nh\u1ef1a POM l\u00e0 g\u00ec?<\/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-pom\/#Tinh_chat_co_hoc_hat_nhua_POM\" title=\"T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc h\u1ea1t nh\u1ef1a POM\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc h\u1ea1t nh\u1ef1a POM<\/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-pom\/#Tinh_chat_dien\" title=\"T\u00ednh ch\u1ea5t \u0111i\u1ec7n\u00a0\">T\u00ednh ch\u1ea5t \u0111i\u1ec7n\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\/hat-nhua-pom\/#Hieu_suat_moi_truong\" title=\"Hi\u1ec7u su\u1ea5t m\u00f4i tr\u01b0\u1eddng\u00a0\">Hi\u1ec7u su\u1ea5t m\u00f4i tr\u01b0\u1eddng\u00a0<\/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-pom\/#Sua_doi_nguyen_lieu\" title=\"S\u1eeda \u0111\u1ed5i nguy\u00ean li\u1ec7u\">S\u1eeda \u0111\u1ed5i nguy\u00ean li\u1ec7u<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Nguyen_lieu_hat_nhua_POM\"><\/span><span style=\"color: #008000; font-size: 12pt;\"><em><strong>Nguy\u00ean li\u1ec7u h\u1ea1t nh\u1ef1a POM<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-size: 12pt;\">Nguy\u00ean li\u1ec7u h\u1ea1t nh\u1ef1a POM (nh\u1ef1a polyoxymethylene) l\u00e0 m\u1ed9t lo\u1ea1i nh\u1ef1a t\u1ed5ng h\u1ee3p Polyme tuy\u1ebfn t\u00ednh m\u1eadt \u0111\u1ed9 cao, k\u1ebft tinh cao, n\u00f3 l\u00e0 m\u1ed9t h\u1ea1t nh\u1ef1a m\u00e0u tr\u1eafng ho\u1eb7c \u0111en c\u00f3 \u0111\u1ed9 c\u1ee9ng cao, \u0111\u1ed9 c\u1ee9ng cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n cao. Ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho b\u00e1nh r\u0103ng, v\u00f2ng bi, ph\u1ee5 t\u00f9ng \u00f4 t\u00f4, m\u00e1y c\u00f4ng c\u1ee5, d\u1ee5ng c\u1ee5 b\u00ean trong v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m kh\u00e1c \u0111\u00f3ng vai tr\u00f2 khung x\u01b0\u01a1ng. T\u00ecm hi\u1ec3u v\u1ec1 <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/dpm360.com\/san-pham\/hat-nhua-pmma\/\">H\u1ea1t nh\u1ef1a PMMA<\/a><\/span><\/span><\/p>\n<figure id=\"attachment_4470\" aria-describedby=\"caption-attachment-4470\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"wp-image-4470 size-medium\" src=\"https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/hat-nhua-pom-300x300.jpg\" alt=\"H\u1ea1t nh\u1ef1a POM\" width=\"300\" height=\"300\" srcset=\"https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/hat-nhua-pom-300x300.jpg 300w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/hat-nhua-pom-150x150.jpg 150w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/hat-nhua-pom-768x768.jpg 768w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/hat-nhua-pom-100x100.jpg 100w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/hat-nhua-pom-600x600.jpg 600w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/hat-nhua-pom.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-4470\" class=\"wp-caption-text\"><span style=\"font-size: 12pt;\">H\u1ea1t nh\u1ef1a POM<\/span><\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Nguyen_lieu_hat_nhua_POM_la_gi\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>Nguy\u00ean li\u1ec7u h\u1ea1t nh\u1ef1a POM l\u00e0 g\u00ec?<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">Nguy\u00ean li\u1ec7u nh\u1ef1a POM l\u00e0 lo\u1ea1i v\u1eadt li\u1ec7u c\u1ee9ng, \u0111\u1eb7c, b\u1ec1 m\u1eb7t nh\u1eb5n b\u00f3ng, c\u00f3 m\u00e0u v\u00e0ng nh\u1ea1t ho\u1eb7c tr\u1eafng, ph\u1ea7n th\u00e0nh m\u1ecfng c\u00f3 m\u00e0u trong m\u1edd. \u0110\u1eb7c \u0111i\u1ec3m \u0111\u1ed1t ch\u00e1y l\u00e0 d\u1ec5 ch\u00e1y, v\u00e0 ti\u1ebfp t\u1ee5c ch\u00e1y sau khi r\u1eddi kh\u1ecfi ng\u1ecdn l\u1eeda. \u0110\u1ea7u tr\u00ean c\u1ee7a ng\u1ecdn l\u1eeda c\u00f3 m\u00e0u v\u00e0ng v\u00e0 \u0111\u1ea7u d\u01b0\u1edbi c\u00f3 m\u00e0u xanh lam. Hi\u1ec7n t\u01b0\u1ee3ng n\u00f3ng ch\u1ea3y v\u00e0 nh\u1ecf gi\u1ecdt x\u1ea3y ra, c\u00f3 m\u00f9i formaldehyde v\u00e0 m\u00f9i tanh kh\u00f3 ch\u1ecbu. POM l\u00e0 b\u1ed9t m\u00e0u tr\u1eafng, nh\u00ecn chung kh\u00f4ng trong su\u1ed1t, m\u00e0u s\u1eafc \u0111\u1eb9p, tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang 1,41-1,43 g\/cm3, t\u1ef7 l\u1ec7 co r\u00fat khu\u00f4n 1,2-3,0%, nhi\u1ec7t \u0111\u1ed9 \u0111\u00fac 170-200\u2103, \u0111i\u1ec1u ki\u1ec7n s\u1ea5y 80-90\u2103 trong 2 gi\u1edd. <\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t l\u00e2u d\u00e0i c\u1ee7a POM kh\u00f4ng cao, nh\u01b0ng c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 160 \u00b0 C trong th\u1eddi gian ng\u1eafn, kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t ng\u1eafn h\u1ea1n c\u1ee7a POM \u0111\u1ed3ng tr\u00f9ng h\u1ee3p cao h\u01a1n 10 \u00b0 C so v\u1edbi POM \u0111\u1ed3ng tr\u00f9ng h\u1ee3p, nh\u01b0ng v\u1ec1 l\u00e2u d\u00e0i, Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t c\u1ee7a POM \u0111\u1ed3ng tr\u00f9ng h\u1ee3p cao h\u01a1n kho\u1ea3ng 10\u00b0C so v\u1edbi POM \u0111\u1ed3ng tr\u00f9ng h\u1ee3p. N\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t th\u1eddi gian d\u00e0i trong kho\u1ea3ng nhi\u1ec7t \u0111\u1ed9 t\u1eeb -40\u00b0C \u0111\u1ebfn 100\u00b0C. POM r\u1ea5t d\u1ec5 ph\u00e2n h\u1ee7y v\u00e0 nhi\u1ec7t \u0111\u1ed9 ph\u00e2n h\u1ee7y l\u00e0 240 \u0111\u1ed9. Khi b\u1ecb ph\u00e2n h\u1ee7y s\u1ebd sinh ra c\u00e1c lo\u1ea1i kh\u00ed g\u00e2y k\u00edch \u1ee9ng v\u00e0 \u0103n m\u00f2n. Do \u0111\u00f3, th\u00e9p khu\u00f4n ph\u1ea3i \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng v\u1eadt li\u1ec7u ch\u1ed1ng \u0103n m\u00f2n.<\/span><\/p>\n<figure id=\"attachment_4472\" aria-describedby=\"caption-attachment-4472\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"wp-image-4472 size-medium\" src=\"https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/nguyen-lieu-pom-300x300.jpg\" alt=\"Nguy\u00ean li\u1ec7u POM\" width=\"300\" height=\"300\" srcset=\"https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/nguyen-lieu-pom-300x300.jpg 300w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/nguyen-lieu-pom-150x150.jpg 150w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/nguyen-lieu-pom-100x100.jpg 100w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-4472\" class=\"wp-caption-text\"><span style=\"font-size: 12pt;\">Nguy\u00ean li\u1ec7u POM<\/span><\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Tinh_chat_co_hoc_hat_nhua_POM\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc h\u1ea1t nh\u1ef1a POM<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">Nguy\u00ean li\u1ec7u nh\u1ef1a POM c\u00f3 \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 c\u1ee9ng cao, \u0111\u1ed9 \u0111\u00e0n h\u1ed3i t\u1ed1t v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n t\u1ed1t. T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a n\u00f3 r\u1ea5t tuy\u1ec7t v\u1eddi, \u0111\u1ed9 b\u1ec1n ri\u00eang c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 50,5MPa v\u00e0 \u0111\u1ed9 c\u1ee9ng ri\u00eang c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 2650MPa, r\u1ea5t g\u1ea7n v\u1edbi kim lo\u1ea1i. C\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a POM thay \u0111\u1ed5i m\u1ed9t ch\u00fat theo nhi\u1ec7t \u0111\u1ed9 v\u00e0 s\u1ef1 thay \u0111\u1ed5i c\u1ee7a POM \u0111\u1ed3ng tr\u00f9ng h\u1ee3p l\u1edbn h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi POM \u0111\u1ed3ng tr\u00f9ng h\u1ee3p. <\/span><\/p>\n<p><span style=\"font-size: 12pt;\">\u0110\u1ed9 b\u1ec1n va \u0111\u1eadp c\u1ee7a POM cao h\u01a1n, nh\u01b0ng t\u00e1c \u0111\u1ed9ng th\u00f4ng th\u01b0\u1eddng kh\u00f4ng t\u1ed1t b\u1eb1ng <span style=\"color: #993300;\"><a style=\"color: #993300;\" href=\"https:\/\/dpm360.com\/san-pham\/hat-nhua-abs\/\">h\u1ea1t nh\u1ef1a ABS<\/a><\/span> v\u00e0 PC; POM nh\u1ea1y c\u1ea3m v\u1edbi khe h\u1edf v\u00e0 \u0111\u1ed9 b\u1ec1n va \u0111\u1eadp c\u00f3 th\u1ec3 gi\u1ea3m t\u1edbi 90% n\u1ebfu c\u00f3 khe h\u1edf. \u0110\u1ed9 b\u1ec1n m\u1ecfi c\u1ee7a POM r\u1ea5t n\u1ed5i b\u1eadt, sau 10 l\u1ea7n t\u1ea3i lu\u00e2n phi\u00ean, \u0111\u1ed9 b\u1ec1n m\u1ecfi c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 35MPa, trong khi PA v\u00e0 PC ch\u1ec9 l\u00e0 28MPa. \u0110\u1eb7c t\u00ednh r\u00e3o c\u1ee7a POM t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u1ee7a PA, n\u00f3 ch\u1ec9 l\u00e0 2,3% \u1edf 20\u00b0C, 21MPa v\u00e0 3000h v\u00e0 \u00edt b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec7t \u0111\u1ed9. H\u1ec7 s\u1ed1 ma s\u00e1t c\u1ee7a POM nh\u1ecf, kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n t\u1ed1t (POM&gt;PA66&gt;PA6&gt;ABS&gt;HPVC&gt;PS&gt;PC), gi\u00e1 tr\u1ecb PV gi\u1edbi h\u1ea1n r\u1ea5t l\u1edbn v\u00e0 \u0111\u1eb7c t\u00ednh t\u1ef1 b\u00f4i tr\u01a1n t\u1ed1t. Khi c\u00e1c s\u1ea3n ph\u1ea9m POM c\u1ecd x\u00e1t v\u1edbi nhau s\u1ebd d\u1ec5 t\u1ea1o ra ti\u1ebfng k\u00eau khi ch\u1ecbu t\u1ea3i tr\u1ecdng cao.<\/span><\/p>\n<figure id=\"attachment_4473\" aria-describedby=\"caption-attachment-4473\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" class=\"wp-image-4473 size-medium\" src=\"https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/hat-nhua-nguyen-sinh-pom-300x300.jpg\" alt=\"H\u1ea1t nh\u1ef1a nguy\u00ean sinh POM\" width=\"300\" height=\"300\" srcset=\"https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/hat-nhua-nguyen-sinh-pom-300x300.jpg 300w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/hat-nhua-nguyen-sinh-pom-150x150.jpg 150w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/hat-nhua-nguyen-sinh-pom-100x100.jpg 100w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/hat-nhua-nguyen-sinh-pom-600x600.jpg 600w, https:\/\/dpm360.com\/wp-content\/uploads\/2023\/03\/hat-nhua-nguyen-sinh-pom.jpg 750w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-4473\" class=\"wp-caption-text\"><span style=\"font-size: 12pt;\">H\u1ea1t nh\u1ef1a nguy\u00ean sinh POM<\/span><\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Tinh_chat_dien\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>T\u00ednh ch\u1ea5t \u0111i\u1ec7n\u00a0<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">Nguy\u00ean li\u1ec7u nh\u1ef1a POM c\u00f3 kh\u1ea3 n\u0103ng c\u00e1ch \u0111i\u1ec7n t\u1ed1t, h\u1ea7u nh\u01b0 kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m; h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i v\u00e0 t\u1ed5n th\u1ea5t \u0111i\u1ec7n m\u00f4i \u00edt thay \u0111\u1ed5i trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m v\u00e0 t\u1ea7n s\u1ed1 r\u1ed9ng; kh\u1ea3 n\u0103ng ch\u1ed1ng h\u1ed3 quang tuy\u1ec7t v\u1eddi, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong b\u1ea3o qu\u1ea3n \u1edf nhi\u1ec7t \u0111\u1ed9 cao. \u0110\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i c\u1ee7a POM c\u00f3 li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 d\u00e0y, khi \u0111\u1ed9 d\u00e0y l\u00e0 0,127mm l\u00e0 82,7kV\/mm v\u00e0 khi \u0111\u1ed9 d\u00e0y l\u00e0 1,88mm l\u00e0 23,6kV\/mm.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Xem th\u00eam: <span style=\"color: #800080;\"><a style=\"color: #800080;\" href=\"https:\/\/dpm360.com\/san-pham\/hat-nhua-pc\/\">H\u1ea1t nh\u1ef1a PC<\/a><\/span><\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Hieu_suat_moi_truong\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>Hi\u1ec7u su\u1ea5t m\u00f4i tr\u01b0\u1eddng\u00a0<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-size: 12pt;\">Nguy\u00ean li\u1ec7u nh\u1ef1a POM kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i c\u00e1c ch\u1ea5t ki\u1ec1m v\u00e0 ch\u1ea5t oxy h\u00f3a m\u1ea1nh, v\u00e0 c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nh\u1ea5t \u0111\u1ecbnh \u0111\u1ed1i v\u1edbi axit alkenoic v\u00e0 axit y\u1ebfu. POM c\u00f3 kh\u1ea3 n\u0103ng kh\u00e1ng dung m\u00f4i t\u1ed1t, c\u00f3 th\u1ec3 ch\u1ed1ng l\u1ea1i hydrocacbon, r\u01b0\u1ee3u, aldehyde, ete, x\u0103ng, d\u1ea7u b\u00f4i tr\u01a1n v\u00e0 ki\u1ec1m y\u1ebfu v\u00e0 c\u00f3 th\u1ec3 duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc \u0111\u00e1ng k\u1ec3 \u1edf nhi\u1ec7t \u0111\u1ed9 cao. H\u1ea5p th\u1ee5 n\u01b0\u1edbc th\u1ea5p v\u00e0 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc t\u1ed1t. Kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft c\u1ee7a nguy\u00ean li\u1ec7u nh\u1ef1a POM kh\u00f4ng t\u1ed1t, d\u01b0\u1edbi t\u00e1c d\u1ee5ng c\u1ee7a tia c\u1ef1c t\u00edm trong th\u1eddi gian d\u00e0i c\u01a1 t\u00ednh s\u1ebd gi\u1ea3m s\u00fat, b\u1ec1 m\u1eb7t b\u1ecb r\u1ed7, n\u1ee9t. V\u1eadt li\u1ec7u k\u1ebft tinh c\u00f3 ph\u1ea1m vi n\u00f3ng ch\u1ea3y h\u1eb9p, t\u1ed1c \u0111\u1ed9 n\u00f3ng ch\u1ea3y v\u00e0 \u0111\u00f4ng \u0111\u1eb7c nhanh, qu\u00e1 tr\u00ecnh k\u1ebft tinh x\u1ea3y ra khi nhi\u1ec7t \u0111\u1ed9 v\u1eadt li\u1ec7u th\u1ea5p h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y. T\u00ednh di \u0111\u1ed9ng trung b\u00ecnh. \u0110\u1ed9 h\u00fat \u1ea9m nh\u1ecf, kh\u00f4ng c\u1ea7n x\u1eed l\u00fd s\u1ea5y kh\u00f4.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Sua_doi_nguyen_lieu\"><\/span><span style=\"color: #ff0000; font-size: 12pt;\"><em><strong>S\u1eeda \u0111\u1ed5i nguy\u00ean li\u1ec7u<\/strong><\/em><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"color: #0000ff; font-size: 12pt;\"><em><strong>1. POM n\u00e2ng cao<\/strong><\/em><\/span><\/p>\n<p><span style=\"font-size: 12pt;\">V\u1eadt li\u1ec7u gia c\u1ed1 ch\u00ednh l\u00e0 s\u1ee3i th\u1ee7y tinh, qu\u1ea3 c\u1ea7u th\u1ee7y tinh ho\u1eb7c s\u1ee3i carbon, s\u1ee3i th\u1ee7y tinh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t, sau khi gia c\u01b0\u1eddng, c\u01a1 t\u00ednh c\u00f3 th\u1ec3 t\u0103ng l\u00ean g\u1ea5p 2 \u0111\u1ebfn 3 l\u1ea7n, nhi\u1ec7t \u0111\u1ed9 bi\u1ebfn d\u1ea1ng nhi\u1ec7t c\u00f3 th\u1ec3 t\u0103ng l\u00ean b\u1eb1ng c\u00e1ch h\u01a1n 50\u00b0C.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\"><em><strong><span style=\"color: #0000ff;\">2. POM b\u00f4i tr\u01a1n cao<\/span><\/strong><\/em><\/span><\/p>\n<p><span style=\"font-size: 12pt;\">Th\u00eam than ch\u00ec, F4, molypden disulfide, d\u1ea7u b\u00f4i tr\u01a1n v\u00e0 PE tr\u1ecdng l\u01b0\u1ee3ng ph\u00e2n t\u1eed th\u1ea5p v\u00e0o POM c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t b\u00f4i tr\u01a1n c\u1ee7a n\u00f3. V\u00ed d\u1ee5: th\u00eam 5 ph\u1ea7n F4 v\u00e0o POM c\u00f3 th\u1ec3 gi\u1ea3m 60% h\u1ec7 s\u1ed1 ma s\u00e1t v\u00e0 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n l\u00ean 1 \u0111\u1ebfn 2 l\u1ea7n. V\u00ed d\u1ee5 kh\u00e1c, th\u00eam d\u1ea7u b\u00f4i tr\u01a1n l\u1ecfng v\u00e0o POM c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 h\u1ea1n ch\u1ebf gi\u00e1 tr\u1ecb PV. \u0110\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 ph\u00e2n t\u00e1n c\u1ee7a d\u1ea7u, c\u1ea7n ph\u1ea3i th\u00eam c\u00e1c ch\u1ea5t mang h\u1ea5p th\u1ee5 d\u1ea7u nh\u01b0 mu\u1ed9i than, nh\u00f4m hydroxit bari sulfat v\u00e0 cao su ethylene-propylene. Th\u00eam 5% d\u1ea7u, \u0111\u1ed9 ma s\u00e1t c\u1ee7a POM t\u0103ng 72% v\u00e0 gi\u00e1 tr\u1ecb PV gi\u1edbi h\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 3,9MPa m\/s (0,213MPa m\/s \u0111\u1ed1i v\u1edbi POM nguy\u00ean ch\u1ea5t), g\u1ea5p 3 \u0111\u1ebfn 20 l\u1ea7n so v\u1edbi c\u00e1c lo\u1ea1i nh\u1ef1a k\u1ef9 thu\u1eadt kh\u00e1c.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>M\u1ee5c l\u1ee5c Nguy\u00ean li\u1ec7u h\u1ea1t nh\u1ef1a POMNguy\u00ean li\u1ec7u h\u1ea1t nh\u1ef1a POM l\u00e0 g\u00ec?T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc h\u1ea1t nh\u1ef1a POMT\u00ednh ch\u1ea5t \u0111i\u1ec7n\u00a0Hi\u1ec7u su\u1ea5t m\u00f4i tr\u01b0\u1eddng\u00a0S\u1eeda \u0111\u1ed5i nguy\u00ean li\u1ec7u Nguy\u00ean li\u1ec7u h\u1ea1t nh\u1ef1a POM Nguy\u00ean li\u1ec7u h\u1ea1t nh\u1ef1a POM (nh\u1ef1a polyoxymethylene) l\u00e0 m\u1ed9t lo\u1ea1i nh\u1ef1a t\u1ed5ng h\u1ee3p Polyme tuy\u1ebfn t\u00ednh m\u1eadt \u0111\u1ed9 cao, k\u1ebft tinh cao, n\u00f3 &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/dpm360.com\/san-pham\/hat-nhua-pom\/\" class=\"more-link\">\u0110\u1ecdc ti\u1ebfp<span class=\"screen-reader-text\"> &#8220;H\u1ea1t nh\u1ef1a POM&#8221;<\/span><\/a><\/p>\n","protected":false},"featured_media":4470,"comment_status":"open","ping_status":"closed","template":"","meta":[],"yoast_head":"\n<title>H\u1ea1t nh\u1ef1a POM - 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