{"id":125411,"date":"2023-01-17T09:35:36","date_gmt":"2023-01-17T01:35:36","guid":{"rendered":"https:\/\/www.alpapowder.com\/125411\/"},"modified":"2023-01-17T09:35:37","modified_gmt":"2023-01-17T01:35:37","slug":"bien-tinh-be-mat-cua-wollastonite-va-ung-dung-cua-no-trong-cao-su-thien-nhien","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/125411\/","title":{"rendered":"Bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t c\u1ee7a wollastonite v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 trong cao su thi\u00ean nhi\u00ean"},"content":{"rendered":"

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Wollastonite l\u00e0 m\u1ed9t kho\u00e1ng ch\u1ea5t metasilicate ph\u00e2n c\u1eaft d\u1ea1ng s\u1ee3i, c\u00f3 m\u1ed9t lo\u1ea1t c\u00e1c \u0111\u1eb7c t\u00ednh tuy\u1ec7t v\u1eddi nh\u01b0 c\u1ea5u tr\u00fac gi\u1ed1ng nh\u01b0 kim, \u0111\u1ed9 tr\u1eafng cao, h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t th\u1ea5p, \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc tuy\u1ec7t v\u1eddi v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y, c\u00e1ch \u0111i\u1ec7n cao. T\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc, v\u00ec v\u1eady wollastonite c\u00f3 tri\u1ec3n v\u1ecdng \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i.<\/p>\n

V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a nghi\u00ean c\u1ee9u c\u00f4ng ngh\u1ec7 x\u1eed l\u00fd s\u00e2u wollastonite, wollastonite \u0111\u00e3 d\u1ea7n tr\u1edf th\u00e0nh nguy\u00ean li\u1ec7u th\u00f4 ch\u1ea5t l\u01b0\u1ee3ng cao trong nhi\u1ec1u l\u0129nh v\u1ef1c c\u00f4ng nghi\u1ec7p nh\u01b0 cao su v\u00e0 nh\u1ef1a polymer, c\u00f4ng nghi\u1ec7p s\u01a1n v\u00e0 ch\u1ea5t ph\u1ee7, c\u00f4ng nghi\u1ec7p v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng, c\u00f4ng nghi\u1ec7p luy\u1ec7n kim g\u1ed1m v\u00e0 c\u00f4ng nghi\u1ec7p gi\u1ea5y.<\/p>\n

S\u1eed d\u1ee5ng m\u1ed9t lo\u1ea1i wollastonite nh\u1ea5t \u0111\u1ecbnh l\u00e0m nguy\u00ean li\u1ec7u th\u00f4, s\u1eed d\u1ee5ng dodecylamine v\u00e0 Si-69 \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c th\u1eed nghi\u1ec7m \u1ee9ng d\u1ee5ng l\u00e0m \u0111\u1ea7y v\u00e0 bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t tr\u00ean wollastonite, th\u1ea3o lu\u1eadn v\u1ec1 c\u00e1c \u0111i\u1ec1u ki\u1ec7n quy tr\u00ecnh bi\u1ebfn t\u00ednh kh\u00f4 c\u1ee7a wollastonite v\u00e0 t\u00e1c d\u1ee5ng c\u1ee7a c\u00e1c t\u00e1c nh\u00e2n bi\u1ebfn t\u00ednh tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a wollastonite. ph\u01b0\u01a1ng th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 s\u1eed d\u1ee5ng cao su t\u1ef1 nhi\u00ean l\u00e0m ch\u1ea5t n\u1ec1n \u0111\u1ec3 kh\u00e1m ph\u00e1 t\u00e1c d\u1ee5ng \u1ee9ng d\u1ee5ng c\u1ee7a wollastonite bi\u1ebfn t\u00ednh, k\u1ebft qu\u1ea3 cho th\u1ea5y:<\/p>\n

(1) Ch\u1ea5t k\u1ebft d\u00ednh Si-69 c\u00f3 th\u1ec3 h\u00ecnh th\u00e0nh s\u1ef1 h\u1ea5p ph\u1ee5 h\u00f3a h\u1ecdc tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a wollastonite. \u0110i\u1ec1u ki\u1ec7n t\u1ed1i \u01b0u \u0111\u1ec3 bi\u1ebfn t\u00ednh wollastonite l\u00e0: li\u1ec1u l\u01b0\u1ee3ng 0,5%, th\u1eddi gian bi\u1ebfn t\u00ednh 60 ph\u00fat, nhi\u1ec7t \u0111\u1ed9 bi\u1ebfn t\u00ednh 90\u00b0C. Trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n n\u00e0y, ch\u1ec9 s\u1ed1 k\u00edch ho\u1ea1t c\u1ee7a wollastonite bi\u1ebfn t\u00ednh l\u00e0 99,6% v\u00e0 g\u00f3c ti\u1ebfp x\u00fac l\u00e0 110,5\u00b0.<\/p>\n

(2) Dodecylamine t\u1ed3n t\u1ea1i \u1edf d\u1ea1ng h\u1ea5p ph\u1ee5 v\u1eadt l\u00fd nh\u01b0 h\u1ea5p ph\u1ee5 li\u00ean k\u1ebft hydro tr\u00ean b\u1ec1 m\u1eb7t wollastonite. C\u00e1c \u0111i\u1ec1u ki\u1ec7n t\u1ed1i \u01b0u \u0111\u1ec3 bi\u1ebfn t\u00ednh wollastonite l\u00e0: li\u1ec1u l\u01b0\u1ee3ng 0,25%, th\u1eddi gian bi\u1ebfn t\u00ednh 10 ph\u00fat v\u00e0 nhi\u1ec7t \u0111\u1ed9 bi\u1ebfn t\u00ednh 30\u00b0C. Trong nh\u1eefng \u0111i\u1ec1u ki\u1ec7n n\u00e0y, ch\u1ec9 s\u1ed1 k\u00edch ho\u1ea1t c\u1ee7a wollastonite bi\u1ebfn t\u00ednh l\u00e0 85,6% v\u00e0 g\u00f3c ti\u1ebfp x\u00fac l\u00e0 61,5\u00b0.<\/p>\n

(3) T\u00e1c d\u1ee5ng c\u1ea3i thi\u1ec7n c\u1ee7a wollastonite bi\u1ebfn t\u00ednh \u0111\u1ed1i v\u1edbi c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a cao su t\u1ef1 nhi\u00ean t\u1ed1t h\u01a1n so v\u1edbi wollastonite ch\u01b0a bi\u1ebfn t\u00ednh, v\u00e0 t\u00e1c d\u1ee5ng c\u1ea3i thi\u1ec7n c\u1ee7a ch\u1ea5t li\u00ean k\u1ebft Si-69 v\u00e0 wollastonite h\u1ed7n h\u1ee3p dodecylamine \u0111\u1ed1i v\u1edbi c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a cao su t\u1ef1 nhi\u00ean th\u1eadm ch\u00ed c\u00f2n l\u1edbn h\u01a1n. t\u1ed1t.<\/p>\n","protected":false},"excerpt":{"rendered":"

Wollastonite l\u00e0 m\u1ed9t kho\u00e1ng ch\u1ea5t metasilicate ph\u00e2n c\u1eaft d\u1ea1ng s\u1ee3i, c\u00f3 m\u1ed9t lo\u1ea1t c\u00e1c \u0111\u1eb7c t\u00ednh tuy\u1ec7t v\u1eddi nh\u01b0 c\u1ea5u tr\u00fac gi\u1ed1ng nh\u01b0 kim, \u0111\u1ed9 tr\u1eafng cao, h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t th\u1ea5p, \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc tuy\u1ec7t v\u1eddi v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y, c\u00e1ch \u0111i\u1ec7n cao. T\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc, v\u00ec v\u1eady wollastonite c\u00f3 tri\u1ec3n v\u1ecdng \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i.<\/p>\n","protected":false},"author":7,"featured_media":122055,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-125411","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\/125411","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=125411"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/125411\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/122055"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=125411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=125411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=125411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}