{"id":1287,"date":"2026-06-30T10:15:00","date_gmt":"2026-06-30T02:15:00","guid":{"rendered":"https:\/\/www.daoanchemical.com\/?p=1287"},"modified":"2026-06-30T10:15:24","modified_gmt":"2026-06-30T02:15:24","slug":"how-to-interpret-zinc-oxide-testing-parameters","status":"publish","type":"post","link":"https:\/\/www.daoanchemical.com\/vi\/how-to-interpret-zinc-oxide-testing-parameters\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 di\u1ec5n gi\u1ea3i c\u00e1c th\u00f4ng s\u1ed1 th\u1eed nghi\u1ec7m K\u1ebdm Oxit?"},"content":{"rendered":"

L\u00e0 nguy\u00ean li\u1ec7u d\u1ea1ng b\u1ed9t \u0111a d\u1ee5ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho ho\u1ea1t h\u00f3a l\u01b0u h\u00f3a cao su, s\u01a1n ch\u1ed1ng \u0103n m\u00f2n c\u00f4ng nghi\u1ec7p, ch\u1ea5t \u0111\u1ed9n cao su v\u00e0 nh\u1ef1a, ch\u1ea5t kh\u00e1ng khu\u1ea9n trong c\u00e1c s\u1ea3n ph\u1ea9m ch\u0103m s\u00f3c c\u00e1 nh\u00e2n, c\u0169ng nh\u01b0 ch\u1ea5t x\u00fac t\u00e1c h\u00f3a h\u1ecdc, k\u1ebdm oxit ph\u1ea3i tr\u1ea3i qua ki\u1ec3m tra b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi n\u0103m th\u00f4ng s\u1ed1 quan tr\u1ecdng khi nh\u1eadp kho v\u00e0 tr\u01b0\u1edbc khi b\u1ea3o qu\u1ea3n: \u0111\u1ed9 tinh khi\u1ebft, di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang, h\u00e0m l\u01b0\u1ee3ng kim lo\u1ea1i n\u1eb7ng, ph\u00e2n t\u00edch qua s\u00e0ng v\u00e0 \u0111\u1ed9 \u1ea9m.<\/p>\n

\u0110\u1ed9 tinh khi\u1ebft l\u00e0 th\u00f4ng s\u1ed1 c\u1ed1t l\u00f5i \u0111\u1ec3 \u0111\u1ecbnh gi\u00e1 nguy\u00ean li\u1ec7u v\u00e0 l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh l\u01b0\u1ee3ng v\u1eadt li\u1ec7u h\u1eefu hi\u1ec7u c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng. Ti\u00eau chu\u1ea9n ng\u00e0nh quy \u0111\u1ecbnh \u0111\u1ed9 tinh khi\u1ebft c\u1ee7a ZnO tr\u00ean c\u01a1 s\u1edf kh\u00f4 sau nung. \u0110i\u1ec1u n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m k\u1ebdm oxit tinh khi\u1ebft l\u00e0 th\u00e0nh ph\u1ea7n h\u1eefu hi\u1ec7u sau khi lo\u1ea1i b\u1ecf c\u00e1c t\u1ea1p ch\u1ea5t tr\u01a1\u2014nh\u01b0 n\u01b0\u1edbc t\u1ef1 do, n\u01b0\u1edbc k\u1ebft tinh, k\u1ebdm cacbonat, mu\u1ed1i v\u00e0 b\u00f9n\u2014th\u00f4ng qua qu\u00e1 tr\u00ecnh nung \u1edf nhi\u1ec7t \u0111\u1ed9 cao 800\u00b0C. \u0110\u00e2y c\u0169ng l\u00e0 c\u01a1 s\u1edf c\u1ed1t l\u00f5i \u0111\u1ec3 nh\u00e0 s\u1ea3n xu\u1ea5t x\u00e1c \u0111\u1ecbnh gi\u00e1 \u0111\u01a1n v\u1ecb v\u00e0 ph\u00e2n lo\u1ea1i c\u1ea5p \u0111\u1ed9, kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ea7m l\u1eabn ho\u1eb7c s\u1eed d\u1ee5ng thay th\u1ebf cho h\u00e0m l\u01b0\u1ee3ng tr\u00ean c\u01a1 s\u1edf \u01b0\u1edbt c\u1ee7a nguy\u00ean li\u1ec7u ch\u01b0a nung.<\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p chu\u1ea9n \u0111\u1ed9 ph\u1ee9c ch\u1ea5t EDTA th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u1ea1i c\u00e1c nh\u00e0 m\u00e1y; \u0111\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra \u0111\u01b0\u1ee3c qu\u1ed1c t\u1ebf c\u00f4ng nh\u1eadn, chi ph\u00ed th\u1ea5p v\u00e0 l\u00e0 quy tr\u00ecnh ti\u00eau chu\u1ea9n \u0111\u1ec3 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng n\u1ed9i b\u1ed9. Ngo\u00e0i ph\u01b0\u01a1ng ph\u00e1p chu\u1ea9n \u0111\u1ed9 ph\u1ee9c ch\u1ea5t EDTA, c\u00f2n c\u00f3 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y b\u1eb1ng hu\u1ef3nh quang XRF v\u00e0 ph\u00e2n t\u00edch ph\u1ed5 ICP, chuy\u00ean d\u00f9ng \u0111\u1ec3 x\u00e1c minh c\u00e1c l\u00f4 h\u00e0ng xu\u1ea5t kh\u1ea9u v\u00e0 c\u00e1c l\u00f4 h\u00e0ng cao c\u1ea5p. \u0110\u1ed9 tinh khi\u1ebft k\u1ebdm oxit c\u00e0ng cao kh\u00f4ng nh\u1ea5t thi\u1ebft \u0111\u1ed3ng ngh\u0129a v\u1edbi hi\u1ec7u su\u1ea5t s\u1ea3n ph\u1ea9m t\u1ed1t h\u01a1n. Khi s\u1eed d\u1ee5ng trong l\u01b0u h\u00f3a cao su, k\u1ebdm oxit th\u00f4ng th\u01b0\u1eddng \u0111\u1ed9 tinh khi\u1ebft cao 99,7% c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t t\u01b0\u01a1ng \u0111\u1ed1i l\u1edbn v\u00e0 th\u1ec3 hi\u1ec7n t\u00ednh tr\u01a1 ph\u1ea3n \u1ee9ng m\u1ea1nh;<\/p>\n

Ng\u01b0\u1ee3c l\u1ea1i, lo\u1ea1i \u0111\u00e3 \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i k\u1ebdm oxit ho\u1ea1t t\u00ednh<\/a> <\/span>v\u1edbi \u0111\u1ed9 tinh khi\u1ebft kho\u1ea3ng 97% cho hi\u1ec7u su\u1ea5t l\u01b0u h\u00f3a cao h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi k\u1ebdm oxit th\u00f4ng th\u01b0\u1eddng \u0111\u1ed9 tinh khi\u1ebft cao. H\u01a1n n\u1eefa, nguy\u00ean li\u1ec7u \u0111\u1ed9 tinh khi\u1ebft th\u1ea5p c\u00f3 th\u1ec3 ch\u1ee9a qu\u00e1 nhi\u1ec1u mu\u1ed1i h\u00f2a tan, tr\u1ef1c ti\u1ebfp g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng cao su b\u1ecb ph\u1ed3ng r\u1ed9p, phim s\u01a1n b\u1ecb ph\u1ed3ng r\u1ed9p v\u00e0 gi\u1ea3m kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ea5m n\u01b0\u1edbc. Ch\u00fang c\u0169ng l\u00e0m t\u0103ng t\u1ed5ng n\u1ed3ng \u0111\u1ed9 k\u1ebdm trong n\u01b0\u1edbc th\u1ea3i nh\u00e0 m\u00e1y, t\u1eeb \u0111\u00f3 n\u00e2ng cao chi ph\u00ed x\u1eed l\u00fd m\u00f4i tr\u01b0\u1eddng.<\/p>\n

\"Zinc
K\u1ebdm Oxit<\/figcaption><\/figure>\n

Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang \u0111\u1ec1 c\u1eadp \u0111\u1ebfn t\u1ed5ng di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t b\u00ean ngo\u00e0i s\u1eb5n c\u00f3 cho h\u1ea5p ph\u1ee5 tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb kh\u1ed1i l\u01b0\u1ee3ng b\u1ed9t k\u1ebdm oxit, \u0111o b\u1eb1ng m\u00b2\/g. Ti\u00eau chu\u1ea9n qu\u1ed1c gia th\u1ed1ng nh\u1ea5t \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p h\u1ea5p ph\u1ee5 nit\u01a1 BET \u0111\u1ec3 ki\u1ec3m tra, v\u00e0 \u0111\u00e2y l\u00e0 ch\u1ec9 s\u1ed1 v\u1eadt l\u00fd tr\u1ef1c quan nh\u1ea5t \u0111\u1ec3 ph\u00e2n bi\u1ec7t gi\u1eefa k\u1ebdm th\u00f4ng th\u01b0\u1eddng, k\u1ebdm ho\u1ea1t t\u00ednh v\u00e0 k\u1ebdm nano. Gi\u00e1 tr\u1ecb c\u00e0ng cao, k\u00edch th\u01b0\u1edbc h\u1ea1t c\u00e0ng m\u1ecbn v\u00e0 c\u1ea5u tr\u00fac b\u1ed9t c\u00e0ng x\u1ed1p. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac v\u00e0 ph\u1ea3n \u1ee9ng l\u1edbn h\u01a1n v\u1edbi c\u00e1c ph\u1ee5 gia l\u01b0u h\u00f3a cao su v\u00e0 nh\u1ef1a ph\u1ee7, mang l\u1ea1i kh\u1ea3 n\u0103ng ho\u1ea1t h\u00f3a, ch\u1ed1ng g\u1ec9 v\u00e0 h\u1ea5p ph\u1ee5 m\u1ea1nh m\u1ebd h\u01a1n, \u0111\u1ed3ng th\u1eddi cho ph\u00e9p gi\u1ea3m m\u1ee9c \u0111\u1ed9 b\u1ed5 sung trong c\u00f4ng th\u1ee9c s\u1ea3n ph\u1ea9m.<\/p>\n

H\u00e0m l\u01b0\u1ee3ng kim lo\u1ea1i n\u1eb7ng l\u00e0 ch\u1ec9 s\u1ed1 c\u01a1 b\u1ea3n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 s\u1ea3n ph\u1ea9m v\u00e0 b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng. Ti\u00eau chu\u1ea9n qu\u1ed1c gia v\u00e0 quy \u0111\u1ecbnh REACH c\u1ee7a EU ki\u1ec3m so\u00e1t nghi\u00eam ng\u1eb7t b\u1ed1n kim lo\u1ea1i n\u1eb7ng ch\u00ednh: ch\u00ec (Pb), cadmium (Cd), th\u1ee7y ng\u00e2n (Hg) v\u00e0 asen (As); c\u00e1c nguy\u00ean t\u1ed1 vi l\u01b0\u1ee3ng nh\u01b0 s\u1eaft v\u00e0 \u0111\u1ed3ng c\u0169ng ch\u1ecbu s\u1ef1 ki\u1ec3m so\u00e1t b\u1ed5 sung. H\u00e0m l\u01b0\u1ee3ng s\u1eaft ho\u1eb7c \u0111\u1ed3ng qu\u00e1 cao c\u00f3 th\u1ec3 tr\u1ef1c ti\u1ebfp g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng bi\u1ebfn m\u00e0u v\u00e0 \u0111en s\u1ea1m s\u01a1n, c\u0169ng nh\u01b0 l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 l\u00e3o h\u00f3a cao su. Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra ch\u1ee7 \u0111\u1ea1o l\u00e0 ph\u00e2n t\u00edch vi l\u01b0\u1ee3ng ph\u1ed5 ICP-OES, v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ea1t m\u1ee9c ppm.<\/p>\n

Ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t, th\u01b0\u1eddng \u0111\u01b0\u1ee3c ng\u00e0nh c\u00f4ng nghi\u1ec7p g\u1ecdi l\u00e0 \u201cc\u1eb7n s\u00e0ng,\u201d \u0111\u1ec1 c\u1eadp \u0111\u1ebfn t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m kh\u1ed1i l\u01b0\u1ee3ng h\u1ea1t th\u00f4 c\u00f2n l\u1ea1i sau khi m\u1ed9t l\u01b0\u1ee3ng b\u1ed9t k\u1ebdm oxit nh\u1ea5t \u0111\u1ecbnh \u0111i qua c\u00e1c s\u00e0ng th\u1eed ti\u00eau chu\u1ea9n. C\u00e1c k\u00edch th\u01b0\u1edbc s\u00e0ng ti\u00eau chu\u1ea9n ph\u1ed5 bi\u1ebfn g\u1ed3m 45 \u03bcm (325 mesh) v\u00e0 75 \u03bcm (200 mesh). \u0110\u00e2y l\u00e0 ch\u1ec9 s\u1ed1 v\u1eadt l\u00fd d\u00f9ng \u0111\u1ec3 ki\u1ec3m so\u00e1t \u0111\u1ed9 m\u1ecbn, \u0111\u1ed9 v\u00f3n c\u1ee5c v\u00e0 c\u00e1c h\u1ea1t t\u1ea1p ch\u1ea5t trong b\u1ed9t, \u0111\u1ed3ng th\u1eddi \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn v\u1ebb ngo\u00e0i v\u00e0 k\u1ebft c\u1ea5u c\u1ee7a s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng.<\/p>\n

\u0110\u1ed9 \u1ea9m \u0111\u1ec1 c\u1eadp \u0111\u1ebfn t\u1ef7 l\u1ec7 \u0111\u1ed9 \u1ea9m t\u1ef1 do h\u1ea5p ph\u1ee5 trong b\u1ed9t k\u1ebdm oxit, kh\u00e1c v\u1edbi n\u01b0\u1edbc k\u1ebft tinh, v\u00e0 l\u00e0 th\u00f4ng s\u1ed1 c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t trong qu\u00e1 tr\u00ecnh b\u1ea3o qu\u1ea3n v\u00e0 v\u1eadn chuy\u1ec3n. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra ti\u00eau chu\u1ea9n bao g\u1ed3m ph\u01b0\u01a1ng ph\u00e1p m\u1ea5t kh\u1ed1i l\u01b0\u1ee3ng khi s\u1ea5y trong l\u00f2 \u1edf 105\u00b0C (th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u1ea1i c\u00e1c c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t) v\u00e0 ph\u01b0\u01a1ng ph\u00e1p chu\u1ea9n \u0111\u1ed9 Karl Fischer (d\u00f9ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n h\u00e0m l\u01b0\u1ee3ng vi l\u01b0\u1ee3ng, \u0111\u1ed9 ch\u00ednh x\u00e1c cao).<\/p>\n

Hi\u1ec7u su\u1ea5t xu\u1ea5t s\u1eafc trong m\u1ed9t th\u00f4ng s\u1ed1 ri\u00eang l\u1ebb kh\u00f4ng \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng t\u1ed5ng th\u1ec3; t\u1ea5t c\u1ea3 n\u0103m ch\u1ec9 s\u1ed1 quan tr\u1ecdng n\u00e0y ph\u1ea3i c\u00e2n \u0111\u1ed1i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ea3n xu\u1ea5t \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i.<\/p>","protected":false},"excerpt":{"rendered":"

[QWEN_MT_ITEM_1]L\u00e0 nguy\u00ean li\u1ec7u d\u1ea1ng b\u1ed9t \u0111a d\u1ee5ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 k\u00edch ho\u1ea1t l\u01b0u h\u00f3a cao su, l\u00e0m l\u1edbp ph\u1ee7 ch\u1ed1ng \u0103n m\u00f2n c\u00f4ng nghi\u1ec7p, ch\u1ea5t \u0111\u1ed9n cho cao su v\u00e0 nh\u1ef1a, ch\u1ea5t kh\u00e1ng khu\u1ea9n trong c\u00e1c s\u1ea3n ph\u1ea9m ch\u0103m s\u00f3c c\u00e1 nh\u00e2n, c\u0169ng nh\u01b0 ch\u1ea5t x\u00fac t\u00e1c h\u00f3a h\u1ecdc, k\u1ebdm oxit ph\u1ea3i tr\u1ea3i qua c\u00e1c ki\u1ec3m nghi\u1ec7m b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi n\u0103m th\u00f4ng s\u1ed1 quan tr\u1ecdng khi nh\u1eadp kho v\u00e0 tr\u01b0\u1edbc khi b\u1ea3o qu\u1ea3n: \u0111\u1ed9 tinh khi\u1ebft, di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang, h\u00e0m l\u01b0\u1ee3ng kim lo\u1ea1i n\u1eb7ng, ph\u00e2n t\u00edch qua s\u00e0ng, v\u00e0 \u0111\u1ed9 \u1ea9m. \u0110\u1ed9 tinh khi\u1ebft [\u2026]<\/p>","protected":false},"author":1,"featured_media":1290,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1287","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-overview"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/posts\/1287","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/comments?post=1287"}],"version-history":[{"count":0,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/posts\/1287\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/media\/1290"}],"wp:attachment":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/media?parent=1287"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/categories?post=1287"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/tags?post=1287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}