{"id":119377,"date":"2022-10-21T09:52:24","date_gmt":"2022-10-21T01:52:24","guid":{"rendered":"https:\/\/www.alpapowder.com\/119377\/"},"modified":"2022-10-21T09:52:24","modified_gmt":"2022-10-21T01:52:24","slug":"anh-huong-cua-su-bien-doi-nhom-hydroxit-doi-voi-tinh-chat-cua-cao-su-tu-nhien","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/119377\/","title":{"rendered":"\u1ea2nh h\u01b0\u1edfng c\u1ee7a s\u1ef1 bi\u1ebfn \u0111\u1ed5i nh\u00f4m hydroxit \u0111\u1ed1i v\u1edbi t\u00ednh ch\u1ea5t c\u1ee7a cao su t\u1ef1 nhi\u00ean"},"content":{"rendered":"

\"\"<\/p>\n

Ch\u1ea5t ch\u1ed1ng ch\u00e1y nh\u00f4m hydroxit \u0111\u00e3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong l\u0129nh v\u1ef1c ch\u1ed1ng ch\u00e1y polyme do \u01b0u \u0111i\u1ec3m c\u1ee7a n\u00f3 l\u00e0 ng\u0103n kh\u00f3i, ch\u1ed1ng ch\u00e1y, kh\u00f4ng \u0111\u1ed9c h\u1ea1i, kh\u00f4ng bay h\u01a1i v\u00e0 gi\u00e1 th\u00e0nh th\u1ea5p, v\u00e0 li\u1ec1u l\u01b0\u1ee3ng c\u1ee7a n\u00f3 v\u01b0\u1ee3t xa c\u00e1c ch\u1ea5t ch\u1ed1ng ch\u00e1y kh\u00e1c.<\/p>\n

Nh\u00f4m hydroxit si\u00eau m\u1ecbn l\u00e0 s\u1ea3n ph\u1ea9m c\u00f3 c\u1ea5u tr\u00fac tinh th\u1ec3 \u0111\u1ec1u \u0111\u1eb7n \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t theo quy tr\u00ecnh s\u1ea3n xu\u1ea5t \u0111\u1eb7c bi\u1ec7t. N\u00f3 c\u00f3 \u01b0u \u0111i\u1ec3m l\u00e0 \u0111\u1ed9 tinh khi\u1ebft cao, k\u00edch th\u01b0\u1edbc h\u1ea1t nh\u1ecf, d\u1ea1ng tinh th\u1ec3 t\u1ed1t, ho\u1ea1t \u0111\u1ed9 b\u1ec1 m\u1eb7t th\u1ea5p v\u00e0 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang nh\u1ecf. N\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1ea5p \u0111\u1ea7y v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn b\u1eb1ng cao su v\u00e0 nh\u1ef1a. \u00c1p d\u1ee5ng cho t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i c\u00f4ng ngh\u1ec7 x\u1eed l\u00fd.<\/p>\n

Nguy\u00ean t\u1eafc ch\u1ed1ng ch\u00e1y c\u1ee7a n\u00f3 l\u00e0 m\u1ed9t l\u01b0\u1ee3ng l\u1edbn n\u01b0\u1edbc tinh th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng trong qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y nhi\u1ec7t. V\u00ec s\u1ef1 bay h\u01a1i c\u1ee7a n\u01b0\u1edbc tinh th\u1ec3 c\u1ea7n h\u1ea5p th\u1ee5 nhi\u1ec1u nhi\u1ec7t, c\u00f3 vai tr\u00f2 l\u00e0m ngu\u1ed9i v\u1eadt li\u1ec7u polyme; h\u01a1i n\u01b0\u1edbc sinh ra c\u00f3 th\u1ec3 l\u00e0m lo\u00e3ng kh\u00ed ch\u00e1y v\u00e0 \u1ee9c ch\u1ebf s\u1ef1 lan t\u1ecfa c\u1ee7a qu\u00e1 tr\u00ecnh ch\u00e1y; m\u1edbi C\u00e1c oxit kim lo\u1ea1i \u0111\u01b0\u1ee3c t\u1ea1o ra c\u00f3 ho\u1ea1t t\u00ednh cao v\u00e0 c\u00f3 th\u1ec3 h\u1ea5p ph\u1ee5 c\u00e1c h\u1ea1t r\u1eafn v\u00e0 c\u00f3 vai tr\u00f2 ng\u0103n ch\u1eb7n kh\u00f3i. Ngo\u00e0i ra, c\u00e1c oxit kim lo\u1ea1i ph\u1ee7 tr\u00ean b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u polyme c\u00f3 th\u1ec3 th\u00fac \u0111\u1ea9y s\u1ef1 h\u00ecnh th\u00e0nh cacbon tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a \u0111\u1ebf v\u00e0 ng\u0103n ch\u1eb7n s\u1ef1 lan truy\u1ec1n c\u1ee7a ng\u1ecdn l\u1eeda.<\/p>\n

Tuy nhi\u00ean, do t\u00ednh ph\u00e2n c\u1ef1c c\u1ef1c m\u1ea1nh v\u00e0 t\u00ednh \u01b0a n\u01b0\u1edbc c\u1ee7a ch\u1ea5t ch\u1ed1ng ch\u00e1y v\u00f4 c\u01a1 nh\u00f4m hydroxit, n\u00f3 c\u00f3 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch k\u00e9m v\u1edbi c\u00e1c v\u1eadt li\u1ec7u polyme kh\u00f4ng ph\u00e2n c\u1ef1c. \u0110\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch gi\u1eefa nh\u00f4m hydroxit v\u00e0 polyme, th\u00f4ng th\u01b0\u1eddng c\u1ea7n ph\u1ea3i X\u1eed l\u00fd b\u1ec1 m\u1eb7t, m\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u qu\u1ea3 nh\u1ea5t l\u00e0 s\u1eed d\u1ee5ng ch\u1ea5t k\u1ebft n\u1ed1i \u0111\u1ec3 x\u1eed l\u00fd b\u1ec1 m\u1eb7t nh\u00f4m hydroxit.<\/p>\n

S\u1eed d\u1ee5ng cao su t\u1ef1 nhi\u00ean l\u00e0m v\u1eadt li\u1ec7u c\u01a1 b\u1ea3n, \u1ea3nh h\u01b0\u1edfng c\u1ee7a x\u1eed l\u00fd b\u1ec1 m\u1eb7t nh\u00f4m hydroxit si\u00eau m\u1ecbn \u0111\u1ebfn c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 t\u00ednh ch\u1ea5t ch\u1ed1ng ch\u00e1y c\u1ee7a cao su l\u01b0u h\u00f3a tr\u01b0\u1edbc v\u00e0 sau khi x\u1eed l\u00fd b\u1ec1 m\u1eb7t \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u. K\u1ebft qu\u1ea3 cho th\u1ea5y:<\/p>\n

(1) Khi cao su thi\u00ean nhi\u00ean si\u00eau m\u1ecbn nh\u00f4m hydroxit ch\u1ed1ng ch\u00e1y, c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc gi\u1ea3m r\u00f5 r\u00e0ng khi l\u01b0\u1ee3ng b\u1ed5 sung t\u0103ng l\u00ean. Khi l\u01b0\u1ee3ng b\u1ed5 sung \u0111\u1ea1t 150 ph\u1ea7n, ch\u1ea5t ch\u1ed1ng ch\u00e1y \u0111\u1ea1t m\u1ee9c FV0, ch\u1ec9 s\u1ed1 oxy \u0111\u1ea1t 29%, v\u00e0 t\u1ea1o kh\u00f3i nh\u1ecf. Trong \u0111i\u1ec1u ki\u1ec7n \u00edt kh\u00f3i v\u00e0 \u00edt halogen, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c coi l\u00e0 h\u1ee3p l\u1ef1c v\u1edbi m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf ch\u1ea5t ch\u1ed1ng ch\u00e1y g\u1ed1c halogen \u0111\u1ec3 c\u1ea3i thi\u1ec7n c\u01a1 t\u00ednh.<\/p>\n

(2) X\u1eed l\u00fd thay \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a nh\u00f4m hydroxit si\u00eau m\u1ecbn v\u1edbi ch\u1ea5t k\u1ebft n\u1ed1i silan c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch gi\u1eefa nh\u00f4m hydroxit v\u00e0 cao su t\u1ef1 nhi\u00ean, c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t x\u1eed l\u00fd v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a l\u01b0u h\u00f3a, v\u00e0 hi\u1ec7u su\u1ea5t ch\u1ed1ng ch\u00e1y thay \u0111\u1ed5i t\u01b0\u01a1ng \u0111\u1ed1i. Nh\u1ecf b\u00e9. Khi l\u01b0\u1ee3ng ch\u1ea5t n\u1ed1i silan \u0111\u01b0\u1ee3c th\u00eam v\u00e0o l\u00e0 1,5% kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a nh\u00f4m hydroxit, hi\u1ec7u su\u1ea5t \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n nhi\u1ec1u nh\u1ea5t.<\/p>\n

(3) Theo h\u1ec7 th\u1ed1ng c\u00f4ng th\u1ee9c n\u00e0y, trong m\u1ed9t ph\u1ea1m vi nh\u1ea5t \u0111\u1ecbnh, ch\u1ec9 s\u1ed1 oxy c\u1ee7a ch\u1ea5t l\u01b0u h\u00f3a t\u0103ng kho\u1ea3ng 2 \u0111\u01a1n v\u1ecb cho m\u1ed7i 30 ph\u1ea7n nh\u00f4m hydroxit si\u00eau m\u1ecbn \u0111\u01b0\u1ee3c th\u00eam v\u00e0o.<\/p>\n","protected":false},"excerpt":{"rendered":"

Ch\u1ea5t ch\u1ed1ng ch\u00e1y nh\u00f4m hydroxit \u0111\u00e3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong l\u0129nh v\u1ef1c ch\u1ed1ng ch\u00e1y polyme do \u01b0u \u0111i\u1ec3m c\u1ee7a n\u00f3 l\u00e0 ng\u0103n kh\u00f3i, ch\u1ed1ng ch\u00e1y, kh\u00f4ng \u0111\u1ed9c h\u1ea1i, kh\u00f4ng bay h\u01a1i v\u00e0 gi\u00e1 th\u00e0nh th\u1ea5p, v\u00e0 li\u1ec1u l\u01b0\u1ee3ng c\u1ee7a n\u00f3 v\u01b0\u1ee3t xa c\u00e1c ch\u1ea5t ch\u1ed1ng ch\u00e1y kh\u00e1c.<\/p>\n","protected":false},"author":7,"featured_media":119352,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-119377","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cong-nghiep-tin-tuc-vi"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/119377","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/comments?post=119377"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/119377\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/119352"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=119377"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=119377"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=119377"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}