{"id":119559,"date":"2022-11-02T14:01:07","date_gmt":"2022-11-02T06:01:07","guid":{"rendered":"https:\/\/www.alpapowder.com\/119559\/"},"modified":"2022-11-02T14:01:07","modified_gmt":"2022-11-02T06:01:07","slug":"dieu-che-canxi-cacbonat-hoat-tinh-tu-ba-thai-goc-canxi-va-anh-huong-cua-no-den-tinh-chat-pvc","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/119559\/","title":{"rendered":"\u0110i\u1ec1u ch\u1ebf Canxi cacbonat ho\u1ea1t t\u00ednh t\u1eeb b\u00e3 th\u1ea3i g\u1ed1c Canxi v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a n\u00f3 \u0111\u1ebfn t\u00ednh ch\u1ea5t PVC"},"content":{"rendered":"

\"\"<\/p>\n

L\u00e0 lo\u1ea1i nh\u1ef1a nhi\u1ec7t d\u1ebbo \u0111\u01b0\u1ee3c c\u00f4ng nghi\u1ec7p h\u00f3a s\u1edbm nh\u1ea5t, PVC c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc to\u00e0n di\u1ec7n t\u1ed1t, ch\u1ed1ng ch\u00e1y v\u00e0 ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi, nh\u01b0ng gi\u00f2n trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd v\u00e0 ph\u1ea3i \u0111\u01b0\u1ee3c s\u1eeda \u0111\u1ed5i sau m\u1ed9t lo\u1ea1t c\u00e1c kh\u1ea3 n\u0103ng ch\u1ecbu va \u0111\u1eadp v\u00e0 d\u1ebbo dai tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng. Vi\u1ec7c b\u1ed5 sung m\u1ed9t l\u01b0\u1ee3ng canxi cacbonat th\u00edch h\u1ee3p trong qu\u00e1 tr\u00ecnh s\u1eeda \u0111\u1ed5i PVC gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u1ed9 d\u1ebbo dai, \u0111\u1ed9 c\u1ee9ng, \u0111\u1ed9 b\u1ec1n, kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 c\u00e1c ch\u1ec9 ti\u00eau kh\u00e1c c\u1ee7a s\u1ea3n ph\u1ea9m, \u0111\u1ed3ng th\u1eddi, chi ph\u00ed \u1ee9ng d\u1ee5ng PVC \u0111\u01b0\u1ee3c gi\u1ea3m \u0111\u00e1ng k\u1ec3.<\/p>\n

L\u00e0 m\u1ed9t lo\u1ea1i ch\u1ea5t \u0111\u1ed9n v\u00f4 c\u01a1, trong qu\u00e1 tr\u00ecnh bi\u1ebfn t\u00ednh PVC, vi\u1ec7c b\u1ed5 sung tr\u1ef1c ti\u1ebfp canxi cacbonat ch\u01b0a qua x\u1eed l\u00fd s\u1ebd g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng k\u1ebft t\u1ee5 khu v\u1ef1c. S\u1ea3n ph\u1ea9m c\u00f3 kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n k\u00e9m trong h\u1ec7 th\u1ed1ng PVC v\u00e0 \u00e1i l\u1ef1c b\u1ec1 m\u1eb7t y\u1ebfu n\u00ean kh\u00f4ng th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 c\u1ea3i thi\u1ec7n nh\u01b0 mong \u0111\u1ee3i. Do \u0111\u00f3, canxi cacbonat ph\u1ea3i \u0111\u01b0\u1ee3c bi\u1ebfn t\u00ednh h\u1eefu c\u01a1 \u0111\u1ec3 lo\u1ea1i b\u1ecf th\u1ebf n\u0103ng b\u1ec1 m\u1eb7t c\u1ee7a canxi cacbonat, t\u0103ng t\u00ednh th\u1ea5m \u01b0\u1edbt, kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n v\u00e0 t\u00ednh k\u1ef5 n\u01b0\u1edbc v\u00e0 t\u00ednh \u01b0a b\u00e9o c\u1ee7a canxi cacbonat trong n\u1ec1n PVC, \u0111\u1ed3ng th\u1eddi c\u1ea3i thi\u1ec7n hi\u1ec7u \u1ee9ng bi\u1ebfn t\u00ednh c\u1ee7a canxi cacbonat tr\u00ean PVC.<\/p>\n

Canxi cacbonat \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ebf b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u1eb7n th\u1ea3i c\u00f4ng nghi\u1ec7p v\u00e0 kh\u00ed th\u1ea3i l\u00e0m nguy\u00ean li\u1ec7u th\u00f4, v\u00e0 n\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c bi\u1ebfn t\u00ednh. \u1ea2nh h\u01b0\u1edfng c\u1ee7a canxi cacbonat bi\u1ebfn t\u00ednh \u0111\u1ebfn c\u00e1c t\u00ednh ch\u1ea5t c\u1ee7a PVC \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u. K\u1ebft qu\u1ea3 cho th\u1ea5y:<\/p>\n

(1) S\u1eed d\u1ee5ng c\u1eb7n th\u1ea3i g\u1ed1c canxi (th\u00e0nh ph\u1ea7n ch\u00ednh CaO) v\u00e0 CO2 sinh ra trong s\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p l\u00e0m nguy\u00ean li\u1ec7u, quy tr\u00ecnh s\u1ea3n xu\u1ea5t t\u1ed1t nh\u1ea5t \u0111\u1ec3 \u0111i\u1ec1u ch\u1ebf canxi cacbonat th\u00f4ng qua qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y, lo\u1ea1i b\u1ecf nh\u0169 t\u01b0\u01a1ng, cacbon h\u00f3a, v.v. l\u00e0: nhi\u1ec7t \u0111\u1ed9 25 \u2103, canxi hydroxit ch\u1ee9a ch\u1ea5t r\u1eafn Ph\u1ea7n tr\u0103m kh\u1ed1i l\u01b0\u1ee3ng l\u00e0 10%, ph\u1ea7n tr\u0103m th\u1ec3 t\u00edch CO2 l\u00e0 99,9%, v\u00e0 t\u1ed1c \u0111\u1ed9 khu\u1ea5y l\u00e0 400r \/ ph\u00fat.<\/p>\n

(2) Canxi cacbonat \u0111\u01b0\u1ee3c bi\u1ebfn t\u00ednh b\u1eb1ng natri stearat, hi\u1ec7u qu\u1ea3 \u0111i\u1ec1u ch\u1ebf l\u00e0 t\u1ed1t nh\u1ea5t khi l\u01b0\u1ee3ng ch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh l\u00e0 3%, nhi\u1ec7t \u0111\u1ed9 l\u00e0 80 \u00b0 C, th\u1eddi gian ph\u1ea3n \u1ee9ng l\u00e0 30 ph\u00fat v\u00e0 t\u1ed1c \u0111\u1ed9 khu\u1ea5y l\u00e0 700r \/ ph\u00fat.<\/p>\n

(3) C\u00e1c th\u1eed nghi\u1ec7m \u1ee9ng d\u1ee5ng cho th\u1ea5y r\u1eb1ng canxi cacbonat bi\u1ebfn t\u00ednh c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a s\u1ea3n ph\u1ea9m PVC v\u00e0 gi\u1ea3m chi ph\u00ed \u1ee9ng d\u1ee5ng PVC.<\/p>\n","protected":false},"excerpt":{"rendered":"

L\u00e0 lo\u1ea1i nh\u1ef1a nhi\u1ec7t d\u1ebbo \u0111\u01b0\u1ee3c c\u00f4ng nghi\u1ec7p h\u00f3a s\u1edbm nh\u1ea5t, PVC c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc to\u00e0n di\u1ec7n t\u1ed1t, ch\u1ed1ng ch\u00e1y v\u00e0 ch\u1ed1ng \u0103n m\u00f2n tuy\u1ec7t v\u1eddi, nh\u01b0ng gi\u00f2n trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd v\u00e0 ph\u1ea3i \u0111\u01b0\u1ee3c s\u1eeda \u0111\u1ed5i sau m\u1ed9t lo\u1ea1t c\u00e1c kh\u1ea3 n\u0103ng ch\u1ecbu va \u0111\u1eadp v\u00e0 d\u1ebbo dai tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng.<\/p>\n","protected":false},"author":7,"featured_media":119535,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-119559","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\/119559","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=119559"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/119559\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/119535"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=119559"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=119559"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=119559"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}