{"id":946,"date":"2021-12-06T11:37:03","date_gmt":"2021-12-06T04:37:03","guid":{"rendered":"https:\/\/bmmach.com\/?p=946"},"modified":"2021-12-06T13:58:47","modified_gmt":"2021-12-06T06:58:47","slug":"kien-thuc-co-ban-ve-chat-don-su-dung-trong-son-nuoc","status":"publish","type":"post","link":"https:\/\/bmmach.com\/kien-thuc-co-ban-ve-chat-don-su-dung-trong-son-nuoc\/","title":{"rendered":"KI\u1ebeN TH\u1ee8C C\u01a0 B\u1ea2N V\u1ec0 CH\u1ea4T \u0110\u1ed8N (PH\u1ee4 GIA H\u00d3A CH\u1ea4T NG\u00c0NH S\u01a0N) \u0110\u01af\u1ee2C S\u1eec D\u1ee4NG TRONG S\u01a0N N\u01af\u1edaC"},"content":{"rendered":"
I. Th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n c\u1ee7a s\u01a1n bao g\u1ed3m:<\/b><\/p>\n
– Ch\u1ea5t t\u1ea1o m\u00e0ng (binder).\u00a0<\/span><\/p>\n – B\u1ed9t m\u00e0u (pigment).<\/span><\/p>\n – Ch\u1ea5t \u0111\u1ed9n (extenders).<\/span><\/p>\n – Dung m\u00f4i (solvent).\u00a0\u00a0<\/span><\/p>\n – Ph\u1ee5 gia (Additive).<\/span><\/p>\n \u00a0<\/span>Trong \u0111\u00f3, ch\u1ea5t \u0111\u1ed9n, m\u1ed9t lo\u1ea1i ph\u1ee5 gia h\u00f3a ch\u1ea5t ng\u00e0nh s\u01a1n n\u01b0\u1edbc (extenders) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong th\u00e0nh ph\u1ea7n c\u1ee7a s\u01a1n nh\u1eb1m c\u1ea3i ti\u1ebfn m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t s\u1ea3n ph\u1ea9m nh\u01b0: \u0110\u1ed9 b\u00f3ng, \u0111\u1ed9 c\u1ee9ng, \u0111\u1ed9 m\u01b0\u1ee3t, kh\u1ea3 n\u0103ng thi c\u00f4ng (tr\u01b0\u1ee3t l\u00f4 , v\u0103ng b\u1eafn\u2026), ki\u1ec3m so\u00e1t \u0111\u1ed9 l\u1eafng (vai tr\u00f2 nh\u01b0 1 ch\u1ea5t l\u00e0m \u0111\u1eb7c v\u00f4 c\u01a1).<\/span><\/p>\n II. Ch\u1ea5t \u0111\u1ed9n \u1ea3nh h\u01b0\u1edfng nh\u01b0 th\u1ebf n\u00e0o trong c\u00f4ng th\u1ee9c s\u01a1n?<\/strong><\/p>\n Ch\u1ea5t \u0111\u1ed9n th\u01b0\u1eddng l\u00e0 c\u00e1c h\u1ea1t r\u1eafn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng s\u01a1n v\u00e0 ch\u1ea5t ph\u1ee7 nh\u1eb1m:<\/span><\/p>\n Do \u0111\u00f3, c\u00f3 m\u1ed9t s\u1ed1 kh\u00eda c\u1ea1nh c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t khi l\u1ef1a ch\u1ecdn ch\u1ea5t \u0111\u1ed9n cho s\u01a1n c\u1ee7a m\u00ecnh. B\u1edfi v\u00ec, c\u00e1c thu\u1ed9c t\u00ednh ch\u00ednh c\u1ee7a c\u00f4ng th\u1ee9c s\u01a1n ho\u00e0n to\u00e0n do c\u00e1c th\u00e0nh ph\u1ea7n\u00a0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00f4ng th\u1ee9c quy\u1ebft \u0111\u1ecbnh, g\u00e2y \u1ea3nh h\u01b0\u1edfng.<\/span><\/p>\n H\u1ec7 th\u1ed1ng s\u01a1n v\u00e0 ch\u1ea5t ph\u1ee7 \u0111\u01b0\u1ee3c chia th\u00e0nh ba lo\u1ea1i ch\u00ednh:<\/span><\/p>\n Ch\u1ea5t \u0111\u1ed9n c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn c\u00e1c \u0111\u1eb7c t\u00ednh ch\u00ednh c\u1ee7a s\u01a1n. \u1ea2nh h\u01b0\u1edfng c\u1ee7a ch\u00fang r\u1ea5t quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t, b\u1ea3o qu\u1ea3n v\u00e0 s\u1eed d\u1ee5ng. L\u1ef1a ch\u1ecdn ch\u1ea5t \u0111\u1ed9n kh\u00f4ng t\u1ed1i \u01b0u v\u1ec1 ch\u1ee7ng lo\u1ea1i, t\u1ef7 l\u1ec7 c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m c\u00e1c t\u00ednh ch\u1ea5t thi\u1ebft y\u1ebfu c\u1ee7a s\u01a1n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi ch\u1ea5t \u0111\u1ed9n c\u1ea7n l\u01b0u \u00fd khi l\u1ef1a ch\u1ecdn \u0111\u1ed9n:<\/span><\/p>\n pH c\u1ee7a s\u01a1n n\u01b0\u1edbc r\u1ea5t quan tr\u1ecdng, \u1ed5n \u0111\u1ecbnh h\u1ec7 c\u0169ng nh\u01b0 t\u1ed1i \u01b0u m\u00f4i tr\u01b0\u1eddng \u0111\u1ec3 kh\u00e1ng l\u1ea1i s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c nh\u00f3m vi khu\u1ea9n th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n t\u1ed1t nh\u1ea5t. pH cho s\u01a1n n\u01b0\u1edbc v\u00ec th\u1ebf th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1ec3 l\u00e0 m\u00f4i tr\u01b0\u1eddng ki\u1ec1m nh\u1eb9 (pH 8-10).<\/span><\/p>\n M\u1ed9t s\u1ed1 ch\u1ea5t \u0111\u1ed9n c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng m\u1ea1nh \u0111\u1ebfn pH trong khi nh\u1eefng ch\u1ea5t kh\u00e1c ch\u1ec9 \u1ea3nh h\u01b0\u1edfng nh\u1ecf \u0111\u1ebfn pH. Th\u00e0nh ph\u1ea7n b\u1ec1 m\u1eb7t c\u0169ng nh\u01b0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc c\u1ee7a c\u00e1c h\u1ea1t ch\u1ea5t \u0111\u1ed9n chi ph\u1ed1i \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c h\u1ea1t \u0111\u1ebfn \u0111\u1ed9 pH.<\/span><\/p>\n \u1ea2nh h\u01b0\u1edfng c\u1ee7a t\u1ed1c \u0111\u1ed9 l\u1eafng trong vi\u1ec7c l\u1ef1a ch\u1ecdn k\u00edch th\u01b0\u1edbc & t\u1ef7 tr\u1ecdng c\u1ee7a ch\u1ea5t \u0111\u1ed9n \u2013 T\u1ed1c \u0111\u1ed9 l\u1eafng trong s\u01a1n ch\u1ee7 y\u1ebfu b\u1ecb chi ph\u1ed1i b\u1edfi 3 y\u1ebfu t\u1ed1 ch\u00ednh:<\/span><\/p>\n C\u00e1c h\u1ea1t l\u1edbn c\u00f3 m\u1eadt \u0111\u1ed9 cao s\u1ebd ch\u00ecm nhanh h\u01a1n c\u00e1c h\u1ea1t nh\u1ecf c\u00f3 m\u1eadt \u0111\u1ed9 th\u1ea5p<\/span><\/i><\/p>\n \u01afu ti\u00ean h\u00e0ng \u0111\u1ea7u l\u00e0 l\u1ef1a ch\u1ecdn c\u00e1c ch\u1ea5t \u0111\u1ed9n c\u00f3 k\u00edch th\u01b0\u1edbc v\u00e0 t\u1ef7 tr\u1ecdng kh\u00f4ng l\u1ec7ch qu\u00e1 nhi\u1ec1u v\u1edbi t\u1ef7 tr\u1ecdng v\u00e0 k\u00edch th\u01b0\u1edbc c\u1ee7a ti\u00eau chu\u1ea9n h\u1ec7 s\u01a1n \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u.<\/span><\/p>\n Khi xem x\u00e9t k\u00edch th\u01b0\u1edbc c\u1ee7a c\u00e1c h\u1ea1t ch\u1ea5t \u0111\u1ed9n, ng\u01b0\u1eddi ta th\u01b0\u1eddng \u0111\u01b0a ra \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh c\u1ee7a c\u00e1c h\u1ea1t s\u01a1 c\u1ea5p ri\u00eang l\u1ebb, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 d-50. K\u00edch th\u01b0\u1edbc h\u1ea1t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng micromet (mm) ho\u1eb7c nanomet (nm).<\/span><\/p>\n C\u00e1c lo\u1ea1i \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh kh\u00e1c nhau c\u1ee7a c\u00e1c h\u1ea1t r\u1eafn trong h\u1ec7 ch\u1ea5t l\u1ecfng l\u00e0 r\u1ea5t quan tr\u1ecdng:<\/span><\/p>\n Vi\u1ec7c ch\u1ea5t ph\u00e2n t\u00e1n c\u00f3 th\u1ec3 h\u1ea5p ph\u1ee5 l\u00ean b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t ch\u1ea5t \u0111\u1ed9n hay kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o:<\/span><\/p>\n H\u1ea7u h\u1ebft c\u00e1c ch\u1ea5t \u0111\u1ed9n \u0111\u1ec1u \u01b0a n\u01b0\u1edbc. M\u1ed9t ngo\u1ea1i l\u1ec7 l\u00e0 talc, l\u00e0 ch\u1ea5t \u0111\u1ed9n c\u00f3 b\u1ec1 m\u1eb7t t\u01b0\u01a1ng \u0111\u1ed1i k\u1ef5 n\u01b0\u1edbc. C\u00e1c h\u1ea1t \u01b0a n\u01b0\u1edbc d\u1ec5 d\u00e0ng \u1ed5n \u0111\u1ecbnh v\u00ec c\u00e1c ph\u00e2n t\u1eed ph\u00e2n t\u00e1n c\u00f3 th\u1ec3 h\u1ea5p ph\u1ee5 m\u1ea1nh v\u00e0o c\u00e1c nh\u00f3m ph\u00e2n c\u1ef1c c\u00f3 tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t \u01b0a n\u01b0\u1edbc.<\/span><\/p>\n S\u1ef1 h\u00f2a tan, c\u0169ng nh\u01b0 c\u00e1c ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc c\u00f3 th\u1ec3 x\u1ea3y ra, c\u1ee7a ch\u1ea5t \u0111\u1ed9n ch\u1ee7 y\u1ebfu di\u1ec5n ra trong qu\u00e1 tr\u00ecnh b\u1ea3o qu\u1ea3n v\u00e0 n\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a ch\u1ea5t \u0111\u1ed9n. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ch\u1ecdn ch\u1ea5t \u0111\u1ed9n c\u00f3 kh\u1ea3 n\u0103ng kh\u00e1ng h\u00f3a ch\u1ea5t \u0111\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng l\u1ecfng, ngh\u0129a l\u00e0: ch\u1ea5t \u0111\u1ed9n ph\u1ea3i c\u00f3 \u0111\u1ee7 \u0111\u1ed9 b\u1ec1n (tr\u01a1).<\/span><\/p>\n M\u1ed9t s\u1ed1 ch\u1ea5t \u0111\u1ed9n kh\u00f4ng tr\u01a1, c\u00f3 ngh\u0129a l\u00e0 c\u00e1c h\u1ea1t r\u1eafn c\u00f3 th\u1ec3 b\u1ecb t\u1ea5n c\u00f4ng b\u1edfi m\u1ed9t s\u1ed1 h\u00f3a ch\u1ea5t, dung m\u00f4i, axit, ki\u1ec1m ho\u1eb7c b\u1ee9c x\u1ea1 c\u1ef1c t\u00edm. V\u00ed d\u1ee5:<\/span><\/p>\n Canxi cacbonat (CaCO3) l\u00e0 ch\u1ea5t \u0111\u1ed9n tan ch\u1eadm trong m\u00f4i tr\u01b0\u1eddng axit. \u0110i\u1ec1u n\u00e0y ng\u1ee5 \u00fd r\u1eb1ng ng\u01b0\u1eddi ta n\u00ean c\u1ea9n th\u1eadn khi s\u1eed d\u1ee5ng canxi cacbonat trong c\u00e1c h\u1ec7 th\u1ed1ng d\u1ef1a tr\u00ean n\u01b0\u1edbc c\u00f3 \u0111\u1ed9 pH th\u1ea5p, ho\u1eb7c khi h\u1ec7 th\u1ed1ng s\u1ebd \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng tr\u00ean ch\u1ea5t n\u1ec1n c\u00f3 t\u00ednh axit.<\/span><\/p>\n S\u1ef1 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p c\u00e1c ch\u1ea5t \u0111\u1ed9n c\u0169ng nh\u01b0 h\u1ec7 ph\u00e2n t\u00e1n th\u1ea5m \u01b0\u1edbt s\u1eed d\u1ee5ng s\u1ebd \u0111\u01b0\u1ee3c b\u1ed9 ph\u1eadn R&D t\u00ecm hi\u1ec3u th\u00f4ng s\u1ed1 ph\u00f9 h\u1ee3p,\u00a0 nghi\u00ean c\u1ee9u, th\u1eed nghi\u1ec7m k\u1ef9 l\u01b0\u1ee1ng tr\u01b0\u1edbc khi \u00e1p d\u1ee5ng v\u00e0o s\u1ea3n xu\u1ea5t \u0111\u1ea1i tr\u00e0 nh\u1eb1m \u0111\u1eb7t t\u00ednh \u1ed4N \u0110\u1ecaNH v\u00e0 HI\u1ec6U QU\u1ea2 T\u1ed0I \u01afU\u00a0 c\u1ee7a h\u1ec7 trong ph\u00e2n kh\u00fac s\u1ea3n ph\u1ea9m.<\/span><\/p>\n \u0110\u1ed9 nh\u1edbt c\u1ee7a h\u1ec7 ch\u1ea5t l\u1ecfng ch\u1ecbu \u1ea3nh h\u01b0\u1edfng c\u1ee7a ch\u1ea5t \u0111\u1ed9n, n\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc, h\u00ecnh d\u1ea1ng v\u00e0 th\u00e0nh ph\u1ea7n b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t ch\u1ea5t \u0111\u1ed9n.<\/span><\/p>\n Ch\u1ea5t \u0111\u1ed9n th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0: Carbonate calcium, Kaoline, Oxide titan, Talc. silica powder, Barium sulfate\u2026<\/span><\/p>\n L\u1ef1a ch\u1ecdn c\u00e1c b\u1ed9t \u0111\u1ed9n \u0111\u00fang s\u1ebd l\u00e0m t\u0103ng t\u00ednh ch\u1ea5t m\u00e0ng s\u01a1n.<\/span><\/p>\n S\u01a1n l\u00f3t, s\u01a1n ngo\u1ea1i th\u1ea5t: \u01afu ti\u00ean s\u1eed d\u1ee5ng c\u00e1c b\u1ed9t \u0111\u1ed9n c\u00f3 ch\u1ec9 s\u1ed1 th\u1ea5m d\u1ea7u th\u1ea5m n\u01b0\u1edbc th\u1ea5p nh\u1eb1m h\u1ea1n ch\u1ebf t\u1ed1i \u0111a s\u1ef1 gi\u1eef l\u1ea1i n\u01b0\u1edbc tr\u00ean m\u00e0ng s\u01a1n khi ti\u1ebfp x\u00fac v\u1edbi t\u01b0\u1eddng \u1ea9m trong, ho\u1eb7c m\u01b0a k\u00e9o d\u00e0i (b\u1ec1 m\u1eb7t b\u00ean ngo\u00e0i). H\u1ea1n ch\u1ebf s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i b\u1ed9t \u0111\u1ed9n c\u00f3 t\u00ednh th\u1ea5m n\u01b0\u1edbc, gi\u1eef n\u01b0\u1edbc cao.<\/span><\/p>\n S\u01a1n n\u1ed9i th\u1ea5t: \u00cdt ti\u1ebfp x\u00fac v\u1edbi n\u01b0\u1edbc t\u1eeb b\u00ean ngo\u00e0i. N\u01b0\u1edbc t\u1eeb b\u00ean trong th\u00ec \u0111\u00e3 c\u00f3 s\u01a1n l\u00f3t h\u1ed7 tr\u1ee3 ng\u0103n ch\u1eb7n, l\u00e0m b\u1ec1n cho l\u1edbp s\u01a1n ph\u1ee7 n\u1ed9i th\u1ea5t.\u00a0<\/span><\/p>\n III. C\u00e1c lo\u1ea1i ch\u1ea5t \u0111\u1ed9n s\u1eed d\u1ee5ng trong c\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t s\u01a1n n\u01b0\u1edbc<\/strong><\/p>\n – B\u1ed8T TALC:<\/b><\/p>\n Talc l\u00e0 m\u1ed9t lo\u1ea1i kho\u00e1ng s\u1ea3n. Th\u01b0\u1eddng \u0111\u01b0\u1ee3c nghi\u1ec1n th\u00e0nh b\u1ed9t m\u00e0u tr\u1eafng \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi t\u00ean g\u1ecdi l\u00e0 “b\u1ed9t talc”. B\u1ed9t n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m, h\u1ea5p th\u1ee5 d\u1ea7u, h\u1ea5p th\u1ee5 m\u00f9i, ph\u1ee5c v\u1ee5 nh\u01b0 m\u1ed9t ch\u1ea5t b\u00f4i tr\u01a1n v\u00e0 s\u1ea3n xu\u1ea5t hi\u1ec7u qu\u1ea3 v\u1edbi da c\u1ee7a con ng\u01b0\u1eddi. Talc c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u0111i\u00eau kh\u1eafc v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m v\u1eadt trang tr\u00ed c\u00f3 ni\u00ean \u0111\u1ea1i \u0111\u1ebfn h\u00e0ng ng\u00e0n n\u0103m. Talc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m cho t\u00e1c ph\u1ea9m \u0111i\u00eau kh\u1eafc, b\u00e1t, b\u00e0n, b\u1ed3n, l\u00f2, b\u00e1t \u0111i\u1ebfu v\u00e0 nhi\u1ec1u \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c. T\u00ednh ch\u1ea5t \u0111\u1ed9c \u0111\u00e1o c\u1ee7a talc l\u00e0m cho n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng, l\u00e0m \u0111\u1ed3 g\u1ed1m, s\u01a1n, gi\u1ea5y, v\u1eadt li\u1ec7u l\u1ee3p, nh\u1ef1a, cao su, thu\u1ed1c tr\u1eeb s\u00e2u v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m kh\u00e1c.<\/span><\/p>\n \u00a0<\/span><\/p>\n – BARIUM SULFATE:<\/b><\/p>\n Bari sulfat (ho\u1eb7c sunfat) l\u00e0 m\u1ed9t h\u1ee3p ch\u1ea5t v\u00f4 c\u01a1 v\u1edbi c\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc BaSO4. N\u00f3 l\u00e0 m\u1ed9t ch\u1ea5t c\u00f3 tinh th\u1ec3 m\u00e0u tr\u1eafng kh\u00f4ng m\u00f9i v\u00e0 kh\u00f4ng tan trong n\u01b0\u1edbc, xu\u1ea5t hi\u1ec7n trong t\u1ef1 nhi\u00ean v\u1edbi kho\u00e1ng ch\u1ea5t barit, \u0111\u00f3 l\u00e0 ngu\u1ed3n s\u1ea3n xu\u1ea5t th\u01b0\u01a1ng m\u1ea1i ch\u00ednh c\u1ee7a bari v\u00e0 c\u00e1c ch\u1ea5t \u0111i\u1ec1u ch\u1ebf t\u1eeb n\u00f3. Hi\u1ec7n nay, Barium Sulfate BaSO4 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u ng\u00e0nh s\u1ea3n xu\u1ea5t kh\u00e1c nhau nh\u01b0: s\u01a1n, gi\u1ea5y, y d\u01b0\u1ee3c, nh\u1ef1a,\u2026<\/span><\/p>\n \u00a0<\/span><\/p>\n – B\u1ed8T \u0110\u1ed8N CACO3 (B\u1ed8T \u0110\u00c1):<\/b><\/p>\n \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ng\u00e0nh s\u01a1n, canxi cacbonat \u0111\u01b0\u1ee3c xem nh\u01b0 ch\u1ea5t \u0111\u1ed9n ch\u00ednh c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t 1\u00b5m- 50 \u00b5m c\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 ch\u1eafn s\u00e1ng c\u1ee7a qu\u00e1 tr\u00ecnh s\u01a1n ph\u1ee7. Th\u00eam v\u00e0o \u0111\u00f3 canxi cacbonat c\u00f3 \u0111\u1ed9 s\u00e1ng cao, \u0111\u1ed9 h\u1ea5p th\u1ee5 d\u1ea7u th\u1ea5p, \u0111\u1ed9 ph\u00e2n t\u00e1n t\u1ed1t, b\u1ec1n trong m\u00f4i tr\u01b0\u1eddng, kh\u1ea3 n\u0103ng m\u00e0i m\u00f2n th\u1ea5p, \u0111\u1ed9 pH \u1ed5n \u0111\u1ecbnh, n\u00e2ng cao t\u00ednh n\u0103ng ch\u1ed1ng \u0103n m\u00f2n m\u00f4i tr\u01b0\u1eddng v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 nh\u1edbt s\u1ea3n ph\u1ea9m.<\/span><\/p>\n Canxi cacbonat \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t nhi\u1ec1u trong ng\u00e0nh s\u01a1n n\u01b0\u1edbc ( s\u01a1n trang tr\u00ed), n\u00f3 \u0111\u00f3ng g\u00f3p t\u0103ng kh\u1ea3 n\u0103ng quang h\u1ecdc c\u1ee7a s\u01a1n v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a s\u01a1n. M\u1ed9t s\u1ed1 CaCO3 \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ch\u1ed1ng l\u1eafng cho s\u01a1n l\u1ecfng.<\/span><\/p>\n \u00a0<\/span><\/p>\n – K\u1ebcM STEARATE:<\/b><\/p>\n Kem stearate c\u00f3 d\u1ea1ng b\u1ed9t m\u00e0u tr\u1eafng. N\u00f3 kh\u00f4ng h\u00f2a tan trong n\u01b0\u1edbc, nh\u01b0ng tan t\u1ed1t trong c\u00e1c h\u1ee3p ch\u1ea5t th\u01a1m nh\u01b0 benzen v\u00e0 hidrocacbon clo v\u1ec1 s\u01b0\u1edfi \u1ea5m. Trong th\u1ef1c t\u1ebf, k\u1ebdm stearate \u0111\u1ea9y n\u01b0\u1edbc (hydrophobic). \u0110\u00f3 l\u00e0 c\u00e1c mu\u1ed1i k\u1ebdm axit stearic. N\u00f3 kh\u00f4ng h\u00f2a tan trong r\u01b0\u1ee3u v\u00e0 ete. N\u00f3 l\u00e0 m\u1ed9t t\u00e1c nh\u00e2n n\u1ea5m m\u1ed1c resease r\u1ea5t m\u1ea1nh m\u1ebd. K\u1ebdm stearate kh\u00f4ng ch\u1ee9a b\u1ea5t k\u1ef3 ch\u1ea5t \u0111i\u1ec7n gi\u1ea3i.<\/span><\/p>\n \u1ee8ng d\u1ee5ng ch\u00ednh c\u1ee7a stearate k\u1ebdm l\u00e0 trong ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u1ef1a v\u00e0 cao su, s\u01a1n (l\u00e0 ch\u1ea5t t\u1ea1o b\u00f3ng trong s\u01a1n, m\u1ed9t ch\u1ea5t t\u1ea1o kim lo\u1ea1i trong cao su, polyurethane v\u00e0 polyester, b\u00f4i tr\u01a1n trong m\u1ef9 ph\u1ea9m \u0111\u1ec3 c\u1ea3i thi\u1ec7n k\u1ebft c\u1ea5u)<\/span><\/p>\n \u00a0<\/span><\/p>\n – KAOLIN (Cao lanh)<\/b><\/p>\n Cao lanh l\u00e0 m\u1ed9t lo\u1ea1i \u0111\u1ea5t s\u00e9t m\u00e0u tr\u1eafng, b\u1edf, ch\u1ecbu l\u1eeda, v\u1edbi th\u00e0nh ph\u1ea7n ch\u1ee7 y\u1ebfu l\u00e0 kho\u00e1ng v\u1eadt kaolinit c\u00f9ng m\u1ed9t s\u1ed1 kho\u00e1ng v\u1eadt kh\u00e1c nh\u01b0 illit, montmorillonit, th\u1ea1ch anh, v.v.<\/span><\/p>\n Trong c\u00f4ng nghi\u1ec7p, cao lanh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 s\u1ea3n xu\u1ea5t \u0111\u1ed3 g\u1ed1m s\u1ee9, v\u1eadt li\u1ec7u ch\u1ecbu l\u1eeda, v\u1eadt li\u1ec7u m\u00e0i, s\u1ea3n xu\u1ea5t nh\u00f4m, ph\u00e8n nh\u00f4m, \u0111\u00fac, ch\u1ea5t \u0111\u1ed9n s\u01a1n, cao su, gi\u1ea5y, xi m\u0103ng tr\u1eafng.<\/span><\/p>\n \u00a0<\/b><\/p>\n – B\u1ed8T MICA:<\/b><\/p>\n B\u1ed9t Mica l\u00e0 s\u1ea3n ph\u1ea9m c\u00f3 t\u1ef7 l\u1ec7 k\u00edch th\u01b0\u1edbc cao, c\u00f3 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc l\u00e0 potassium, alumina v\u00e0 silicate.<\/span><\/p>\n \u0110\u1eb7c t\u00ednh ch\u00ednh l\u00e0 ch\u1ed1ng ch\u00e1y, ch\u1ed1ng th\u1ea5m, kh\u00f4ng ch\u00e1y v\u00e0 kh\u00f4ng b\u1eaft l\u1eeda v\u1edbi nhi\u1ec7t \u0111\u1ed9 th\u1ea5p v\u00e0 \u0111\u1ed9 b\u1ec1n tuy\u1ec7t v\u1eddi.<\/span><\/p>\n Ngo\u00e0i ra c\u00f2n l\u00e0m gi\u1ea3m d\u1ea7u, c\u00f3 th\u1ec3 thay th\u1ebf talc l\u00e0m ch\u1ea5t \u0111\u1ed9n, v\u00e0 gi\u00fap ng\u0103n ng\u1eeba v\u00f3n c\u1ee5c. C\u1ea3m gi\u00e1c m\u01b0\u1ee3t v\u00e0 b\u00f3ng c\u00f3 l\u1ee3i cho s\u1ea3n ph\u1ea9m v\u00ec n\u00f3 c\u00f3 \u0111\u1ed9 tr\u1ea7y r\u00e1t th\u1ea5p.<\/span><\/p>\n V\u00ec th\u1ebf, b\u1ed9t Mica kh\u00f4ng tan trong n\u01b0\u1edbc, v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong x\u00e0 ph\u00f2ng, t\u1eafm v\u00e0 s\u1ea3n ph\u1ea9m c\u01a1 th\u1ec3, trang \u0111i\u1ec3m kho\u00e1ng s\u1ea3n, son d\u01b0\u1ee1ng m\u00f4i, n\u1ebfn, \u0111\u1ed3 th\u1ee7 c\u00f4ng, l\u00e0m gi\u1ea5y, \u0111\u1ea5t s\u00e9t, s\u01a1n, nh\u1ef1a v\u00e0 h\u1ea1t m\u00f9i th\u01a1m.<\/span><\/p>\n \u00a0<\/span><\/p>\n – B\u1ed8T \u0110\u1ed8N BENGEL (D\u1eaaN XU\u1ea4T C\u1ee6A BENTONITE):<\/b><\/p>\n L\u00e0 ch\u1ea5t \u0111\u1ed9n tr\u01a1 trong s\u01a1n c\u00f3 t\u00e1c d\u1ee5ng ch\u1ed1ng l\u1eafng cho m\u00e0ng s\u01a1n khi thi c\u00f4ng<\/span><\/p>\n B\u1ec1n th\u1eddi ti\u1ebft, kh\u00e1ng h\u00f3a ch\u1ea5t, b\u1ec1n nhi\u1ec7t.<\/span><\/p>\n B\u1ed9t \u0111\u1ed9n cho s\u01a1n, t\u0103ng c\u01b0\u1eddng t\u00ednh n\u0103ng ch\u1ed1ng x\u01b0\u1edbc, ch\u1ed1ng m\u00e0i m\u00f2n cho s\u01a1n.<\/span><\/p>\n L\u00e0 ph\u1ee5 gia l\u01b0u bi\u1ebfn, l\u00e0 m\u1ed9t ch\u1ea5t ph\u00e2n c\u1ef1c th\u1ea5p ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng c\u00f3 t\u00ednh ph\u00e2n c\u1ef1c cao.<\/span><\/p>\n L\u00e0 m\u1ed9t ph\u1ee5 gia l\u01b0u bi\u1ebfn hi\u1ec7u qu\u1ea3 chi ph\u00ed cao cho h\u1ec7 th\u1ed1ng ph\u00e2n c\u1ef1c th\u1ea5p \u0111\u1ebfn trung b\u00ecnh.<\/span><\/p>\n C\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh c\u1ea7n xem x\u00e9t c\u1ea9n tr\u1ecdng khi l\u1ef1a ch\u1ecdn ch\u1ea5t \u0111\u1ed9n – ph\u1ee5 gia h\u00f3a ch\u1ea5t ng\u00e0nh s\u01a1n trong s\u1ea3n xu\u1ea5t s\u01a1n n\u01b0\u1edbc, t\u00f9y thu\u1ed9c v\u00e0o \u0111\u1eb7c t\u00ednh cu\u1ed1i c\u00f9ng m\u00e0 b\u1ea1n mu\u1ed1n \u0111\u1ea1t \u0111\u01b0\u1ee3c cho s\u01a1n v\u00e0 l\u1edbp ph\u1ee7 c\u1ee7a m\u00ecnh.<\/span><\/p>\n <\/p>\n\n
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