{"id":14757,"date":"2024-08-13T08:55:15","date_gmt":"2024-08-13T08:55:15","guid":{"rendered":"https:\/\/www.epicmicron.com\/?p=14757"},"modified":"2024-12-17T08:42:44","modified_gmt":"2024-12-17T08:42:44","slug":"the-difference-between-heavy-calcium-and-light-calcium-in-polymer-applications","status":"publish","type":"post","link":"https:\/\/www.epicmicron.com\/vi\/the-difference-between-heavy-calcium-and-light-calcium-in-polymer-applications\/","title":{"rendered":"S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa canxi n\u1eb7ng v\u00e0 canxi nh\u1eb9 trong \u1ee9ng d\u1ee5ng polymer"},"content":{"rendered":"

Canxi cacbonat<\/a> l\u00e0 ch\u1ea5t \u0111\u1ed9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nh\u1ef1a. N\u00f3 c\u00f3 hai d\u1ea1ng ch\u00ednh: canxi cacbonat nh\u1eb9 (canxi cacbonat k\u1ebft t\u1ee7a) v\u00e0 canxi cacbonat n\u1eb7ng. Canxi cacbonat nh\u1eb9 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p h\u00f3a h\u1ecdc, trong khi canxi cacbonat n\u1eb7ng \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng c\u00e1ch nghi\u1ec1n v\u00e0 xay c\u01a1 h\u1ecdc. M\u1eadt \u0111\u1ed9 c\u1ee7a ch\u00fang t\u01b0\u01a1ng t\u1ef1 nhau\u20142,4\u20132,6 g\/cm\u00b3 \u0111\u1ed1i v\u1edbi canxi nh\u1eb9 v\u00e0 2,6\u20132,9 g\/cm\u00b3 \u0111\u1ed1i v\u1edbi canxi n\u1eb7ng. S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh n\u1eb1m \u1edf m\u1eadt \u0111\u1ed9 bi\u1ec3u ki\u1ebfn c\u1ee7a ch\u00fang, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1ch ch\u00fang l\u1eafng xu\u1ed1ng theo th\u1ec3 t\u00edch. Canxi nh\u1eb9 th\u01b0\u1eddng c\u00f3 th\u1ec3 t\u00edch l\u1eafng tr\u00ean 2,5 mL\/g, trong khi canxi n\u1eb7ng dao \u0111\u1ed9ng t\u1eeb 1,2 \u0111\u1ebfn 1,9 mL\/g, t\u00f9y thu\u1ed9c v\u00e0o d\u1ea1ng tinh th\u1ec3 v\u00e0 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a n\u00f3.<\/p>\n\n\n\n

C\u00e1c h\u1ea1t canxi cacbonat nh\u1eb9 th\u01b0\u1eddng c\u00f3 h\u00ecnh d\u1ea1ng h\u1ed1 ch\u00e0 l\u00e0, v\u1edbi \u0111\u01b0\u1eddng k\u00ednh d\u00e0i 5\u201312 \u03bcm, \u0111\u01b0\u1eddng k\u00ednh ng\u1eafn 1\u20133 \u03bcm v\u00e0 k\u00edch th\u01b0\u1edbc trung b\u00ecnh 2\u20133 \u03bcm. N\u1ebfu kh\u00f4ng x\u1eed l\u00fd b\u1ec1 m\u1eb7t, c\u00e1c h\u1ea1t n\u00e0y th\u01b0\u1eddng k\u1ebft th\u00e0nh t\u1eebng c\u1ee5m sau khi s\u1ea5y kh\u00f4. C\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c gia \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng canxi nh\u1eb9 d\u1ef1a tr\u00ean c\u1eb7n r\u00e2y \u1edf 125 \u03bcm v\u00e0 45 \u03bcm, kh\u00f4ng ph\u1ea3n \u00e1nh \u0111\u1ea7y \u0111\u1ee7 k\u00edch th\u01b0\u1edbc v\u00e0 s\u1ef1 ph\u00e2n b\u1ed1 c\u1ee7a h\u1ea1t.<\/p>\n\n\n\n

Trong qu\u00e1 tr\u00ecnh nghi\u1ec1n v\u00e0 xay canxi cacbonat n\u1eb7ng, k\u00edch th\u01b0\u1edbc h\u1ea1t thay \u0111\u1ed5i, t\u1ea1o ra s\u1ef1 ph\u00e2n b\u1ed1 t\u1eeb nh\u1ecf \u0111\u1ebfn l\u1edbn trong m\u1ed9t ph\u1ea1m vi. Ph\u00e2n lo\u1ea1i cho ph\u00e9p ch\u00fang t\u00f4i ki\u1ec3m so\u00e1t k\u00edch th\u01b0\u1edbc b\u1ed9t t\u1ed1i \u0111a v\u00e0 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u l\u00e0m \u0111\u1ea7y nh\u1ef1a.<\/p>\n\n\n\n<\/p>\n

\"\"<\/figure>\n

\n\n\n\n

Khi so s\u00e1nh ch\u1ea5t \u0111\u1ed9n canxi nh\u1eb9 v\u00e0 canxi n\u1eb7ng ch\u01b0a qua x\u1eed l\u00fd:<\/h2>\n\n\n\n

1. S\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u1ea7u ra<\/strong>: <\/h3>\n\n\n\n

Vi\u1ec7c thay th\u1ebf canxi n\u1eb7ng b\u1eb1ng canxi nh\u1eb9 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn chi\u1ec1u d\u00e0i ho\u1eb7c di\u1ec7n t\u00edch c\u1ee7a s\u1ea3n ph\u1ea9m. Canxi n\u1eb7ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn di\u1ec7n t\u00edch ng\u1eafn h\u01a1n ho\u1eb7c gi\u1ea3m \u0111i \u0111\u1ed1i v\u1edbi c\u00f9ng tr\u1ecdng l\u01b0\u1ee3ng nguy\u00ean li\u1ec7u th\u00f4, c\u00f3 kh\u1ea3 n\u0103ng d\u1eabn \u0111\u1ebfn gi\u1ea3m gi\u00e1 tr\u1ecb s\u1ea3n ph\u1ea9m. V\u00ed d\u1ee5, c\u00e1c th\u1eed nghi\u1ec7m tr\u00ean \u1ed1ng PVC si\u00eau m\u1ecbn ch\u1ee9a canxi n\u1eb7ng cho th\u1ea5y tr\u1ecdng l\u01b0\u1ee3ng t\u0103ng 4% so v\u1edbi canxi nh\u1eb9. Trong \u1ed1ng PVC x\u1ed1p sandwich, m\u1eadt \u0111\u1ed9 c\u1ee7a \u1ed1ng ch\u1ee9a canxi n\u1eb7ng dao \u0111\u1ed9ng t\u1eeb 1,05 \u0111\u1ebfn 1,12 g\/cm\u00b3, so v\u1edbi 0,96 g\/cm\u00b3 \u0111\u1ed1i v\u1edbi canxi nh\u1eb9, cho th\u1ea5y m\u1ee9c t\u0103ng t\u1eeb 9% \u0111\u1ebfn 17%. N\u1ebfu kh\u00f4ng c\u00f3 c\u00e1c bi\u1ec7n ph\u00e1p \u0111\u1eb7c bi\u1ec7t, vi\u1ec7c thay th\u1ebf canxi nh\u1eb9 b\u1eb1ng canxi n\u1eb7ng c\u00f3 th\u1ec3 t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c \u0111\u1ebfn c\u00e1c c\u00f4ng ty ch\u1ebf bi\u1ebfn.<\/p>\n\n\n\n

2. Gi\u00e1 c\u1ea3<\/strong>:<\/h3>\n\n\n\n

Gi\u00e1 c\u1ee7a canxi n\u1eb7ng thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 theo k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 ph\u00e2n ph\u1ed1i. V\u00ed d\u1ee5, gi\u00e1 c\u1ee7a canxi n\u1eb7ng 1250 l\u01b0\u1edbi, 800 l\u01b0\u1edbi v\u00e0 400 l\u01b0\u1edbi c\u00f3 th\u1ec3 kh\u00e1c nhau t\u1eeb 2 \u0111\u1ebfn 4 l\u1ea7n t\u1eeb c\u00f9ng m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t. Canxi nh\u1eb9 c\u00f3 s\u1eb5n r\u1ed9ng r\u00e3i v\u00e0 th\u01b0\u1eddng ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n. Canxi n\u1eb7ng, th\u01b0\u1eddng \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n t\u1eeb c\u00e1c khu v\u1ef1c nh\u01b0 Qu\u1ea3ng T\u00e2y, T\u1ee9 Xuy\u00ean v\u00e0 \u0110\u00f4ng B\u1eafc Trung Qu\u1ed1c \u0111\u1ebfn B\u1eafc Trung Qu\u1ed1c v\u00e0 c\u00e1c t\u1ec9nh ven bi\u1ec3n, kh\u00f4ng c\u00f3 l\u1ee3i th\u1ebf v\u1ec1 gi\u00e1 so v\u1edbi canxi nh\u1eb9, ngo\u1ea1i tr\u1eeb s\u1ea3n ph\u1ea9m 400 l\u01b0\u1edbi. Do \u0111\u00f3, canxi n\u1eb7ng kh\u00f4ng c\u00f3 gi\u00e1 c\u1ea1nh tranh so v\u1edbi canxi nh\u1eb9, ngay c\u1ea3 khi hi\u1ec7u su\u1ea5t v\u00e0 k\u00edch th\u01b0\u1edbc t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau.<\/p>\n\n\n\n

3. T\u00e1c \u0111\u1ed9ng c\u1ee7a k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 s\u1ef1 ph\u00e2n b\u1ed1 tr\u00ean nh\u1ef1a \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1ea5p \u0111\u1ea7y<\/strong>: <\/h3>\n\n\n\n

C\u00e0ng t\u1ed1t h\u01a1n k\u00edch th\u01b0\u1edbc h\u1ea1t<\/a> canxi n\u1eb7ng, hi\u1ec7u su\u1ea5t c\u1ee7a nh\u1ef1a \u0111\u01b0\u1ee3c l\u1ea5p \u0111\u1ea7y c\u00e0ng t\u1ed1t. Canxi nh\u1eb9, v\u1edbi k\u00edch th\u01b0\u1edbc h\u1ea1t trung b\u00ecnh m\u1ecbn h\u01a1n v\u00e0i micron, cung c\u1ea5p kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n t\u1ed1t h\u01a1n v\u00e0 hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i trong nh\u1ef1a so v\u1edbi canxi n\u1eb7ng th\u00f4 h\u01a1n. \u0110\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi hi\u1ec7u su\u1ea5t c\u1ee7a canxi nh\u1eb9 trong c\u00e1c s\u1ea3n ph\u1ea9m nh\u1ef1a, canxi n\u1eb7ng ph\u1ea3i c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t nh\u1ecf.<\/p>\n\n\n\n

4. Hi\u1ec7u su\u1ea5t x\u1eed l\u00fd<\/strong>: <\/h3>\n\n\n\n

Nh\u1ef1a PVC ch\u1ee9a canxi n\u1eb7ng c\u00f3 t\u00ednh l\u01b0u \u0111\u1ed9ng khi gia c\u00f4ng t\u1ed1t h\u01a1n so v\u1edbi canxi nh\u1eb9. M\u00f4 men xo\u1eafn c\u00e2n b\u1eb1ng trong nh\u1ef1a PVC ch\u1ee9a canxi n\u1eb7ng si\u00eau m\u1ecbn th\u1ea5p h\u01a1n v\u00e0 th\u1eddi gian \u0111\u1ea1t tr\u1ea1ng th\u00e1i c\u00e2n b\u1eb1ng ng\u1eafn h\u01a1n. Nguy\u00ean nh\u00e2n l\u00e0 do h\u00ecnh d\u1ea1ng kh\u1ed1i kh\u00f4ng \u0111\u1ec1u c\u1ee7a c\u00e1c h\u1ea1t canxi n\u1eb7ng. Ch\u00fang di \u0111\u1ed9ng h\u01a1n canxi nh\u1eb9 d\u00e0i h\u01a1n. \u0110i\u1ec1u n\u00e0y h\u1eefu \u00edch v\u1edbi c\u00e1c ph\u1ee5 ki\u1ec7n \u1ed1ng nh\u1ef1a PVC \u0111\u00fac phun v\u00e0 h\u00e0ng h\u00f3a c\u00f3 \u0111\u1ed9 l\u1ea5p \u0111\u1ea7y cao, nh\u01b0 s\u00e0n nh\u1ef1a PVC v\u00e0 t\u1ea5m c\u1eeda s\u1ed5 ch\u1edbp. Ch\u00fang c\u1ea7n t\u00ednh l\u01b0u \u0111\u1ed9ng khi gia c\u00f4ng t\u1ed1t, \u0111i\u1ec1u n\u00e0y c\u0169ng c\u00f3 th\u1ec3 c\u1eaft gi\u1ea3m m\u1ee9c s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng.<\/p>\n\n\n\n

5. Ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t s\u1ea3n ph\u1ea9m<\/strong>: <\/h3>\n\n\n\n

C\u00e1c s\u1ea3n ph\u1ea9m PVC ch\u1ee9a canxi nh\u1eb9 c\u00f3 \u0111\u1ed9 b\u00f3ng b\u1ec1 m\u1eb7t s\u00e1ng h\u01a1n so v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m ch\u1ee9a canxi n\u1eb7ng. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m nh\u01b0 \u1ed1ng, thanh v\u00e0 t\u1ea5m, canxi nh\u1eb9 mang l\u1ea1i \u0111\u1ed9 b\u00f3ng t\u1ed1t h\u01a1n. N\u00f3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t \u0111\u1ed1i v\u1edbi PVC m\u1ec1m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong v\u1ecf d\u00e2y v\u00e0 c\u00e1p. Canxi n\u1eb7ng nghi\u1ec1n m\u1ecbn c\u00f3 th\u1ec3 t\u1ea1o ra b\u1ec1 m\u1eb7t t\u1ed1t. Nh\u01b0ng, n\u00f3 kh\u00f4ng s\u00e1nh \u0111\u01b0\u1ee3c v\u1edbi \u0111\u1ed9 b\u00f3ng c\u1ee7a canxi nh\u1eb9.<\/p>","protected":false},"excerpt":{"rendered":"

Canxi cacbonat l\u00e0 ch\u1ea5t \u0111\u1ed9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nh\u1ef1a. N\u00f3 c\u00f3 hai d\u1ea1ng ch\u00ednh: canxi cacbonat nh\u1eb9 (canxi cacbonat k\u1ebft t\u1ee7a) v\u00e0 canxi cacbonat n\u1eb7ng. Canxi cacbonat nh\u1eb9 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p h\u00f3a h\u1ecdc, [\u2026]<\/p>","protected":false},"author":2,"featured_media":14759,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[42],"tags":[],"class_list":["post-14757","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"yoast_head":"\nThe difference between heavy calcium and light calcium in polymer applications<\/title>\n<meta name=\"description\" content=\"Calcium carbonate\u00a0is a widely used filler in plastics. It comes in two main forms: light calcium carbonate and heavy calcium carbonate.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.epicmicron.com\/vi\/the-difference-between-heavy-calcium-and-light-calcium-in-polymer-applications\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The difference between heavy calcium and light calcium in polymer applications\" \/>\n<meta property=\"og:description\" content=\"Calcium carbonate\u00a0is a widely used filler in plastics. 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