{"id":680426,"date":"2024-09-16T22:00:07","date_gmt":"2024-09-16T21:00:07","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=680426"},"modified":"2024-09-16T22:00:07","modified_gmt":"2024-09-16T21:00:07","slug":"phan-tich-nhiet-trong-luong-tga","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/phan-tich-nhiet-trong-luong-tga\/","title":{"rendered":"Ph\u00e2n t\u00edch nhi\u1ec7t tr\u1ecdng l\u01b0\u1ee3ng (TGA)"},"content":{"rendered":"<p class=\"sidekick\">Ph\u00e2n t\u00edch nhi\u1ec7t tr\u1ecdng l\u01b0\u1ee3ng (TGA): Ph\u01b0\u01a1ng ph\u00e1p \u0111o l\u01b0\u1eddng s\u1ef1 thay \u0111\u1ed5i kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt li\u1ec7u theo nhi\u1ec7t \u0111\u1ed9, \u1ee9ng d\u1ee5ng trong nghi\u00ean c\u1ee9u v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/phan_tich_nhiet_trong_luong_tga.png\" alt=\"Ph\u00e2n t\u00edch nhi\u1ec7t tr\u1ecdng l\u01b0\u1ee3ng (TGA)\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Ph\u00e2n T\u00edch Nhi\u1ec7t Tr\u1ecdng L\u01b0\u1ee3ng (TGA)<\/h2>\n<p>Ph\u00e2n t\u00edch nhi\u1ec7t tr\u1ecdng l\u01b0\u1ee3ng (Thermogravimetric Analysis &#8211; TGA) l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch trong ng\u00e0nh khoa h\u1ecdc v\u00e0 k\u1ef9 thu\u1eadt v\u1eadt li\u1ec7u. TGA \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh s\u1ef1 thay \u0111\u1ed5i kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t m\u1eabu v\u1eadt khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i. K\u1ef9 thu\u1eadt n\u00e0y cung c\u1ea5p th\u00f4ng tin quan tr\u1ecdng v\u1ec1 t\u00ednh \u1ed5n \u0111\u1ecbnh nhi\u1ec7t, h\u00e0m l\u01b0\u1ee3ng n\u01b0\u1edbc, v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c c\u1ee7a m\u1eabu.<\/p>\n<h2>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a TGA<\/h2>\n<p>Trong qu\u00e1 tr\u00ecnh TGA, m\u1eabu v\u1eadt \u0111\u01b0\u1ee3c \u0111\u1eb7t trong m\u1ed9t c\u00e1i c\u00e2n r\u1ea5t nh\u1ea1y c\u1ea3m v\u00e0 \u0111\u01b0\u1ee3c nung n\u00f3ng ho\u1eb7c l\u00e0m m\u00e1t \u1edf m\u1ed9t t\u1ed1c \u0111\u1ed9 nhi\u1ec7t \u0111\u1ed9 c\u1ed1 \u0111\u1ecbnh. Thi\u1ebft b\u1ecb TGA \u0111o l\u01b0\u1eddng s\u1ef1 thay \u0111\u1ed5i kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1eabu v\u1eadt trong qu\u00e1 tr\u00ecnh n\u00e0y v\u00e0 cung c\u1ea5p m\u1ed9t bi\u1ec3u \u0111\u1ed3 kh\u1ed1i l\u01b0\u1ee3ng theo nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c th\u1eddi gian.<\/p>\n<ul>\n<li>Thi\u1ebft b\u1ecb: Thi\u1ebft b\u1ecb TGA bao g\u1ed3m m\u1ed9t c\u00e1i c\u00e2n si\u00eau nh\u1ea1y v\u00e0 m\u1ed9t l\u00f2 nung c\u00f3 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 r\u1ea5t ch\u00ednh x\u00e1c.<\/li>\n<li>Bi\u1ec3u \u0111\u1ed3: K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng m\u1ed9t bi\u1ec3u \u0111\u1ed3, trong \u0111\u00f3 tr\u1ee5c y th\u1ec3 hi\u1ec7n kh\u1ed1i l\u01b0\u1ee3ng (th\u01b0\u1eddng t\u00ednh b\u1eb1ng gam ho\u1eb7c ph\u1ea7n tr\u0103m kh\u1ed1i l\u01b0\u1ee3ng ban \u0111\u1ea7u) v\u00e0 tr\u1ee5c x th\u1ec3 hi\u1ec7n nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c th\u1eddi gian.<\/li>\n<\/ul>\n<h2>\u1ee8ng d\u1ee5ng c\u1ee7a TGA<\/h2>\n<p>TGA c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng trong c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c nhau:<\/p>\n<ol>\n<li><strong>X\u00e1c \u0111\u1ecbnh h\u00e0m l\u01b0\u1ee3ng n\u01b0\u1edbc v\u00e0 ch\u1ea5t bay h\u01a1i:<\/strong> K\u1ebft qu\u1ea3 TGA s\u1ebd cho th\u1ea5y s\u1ef1 m\u1ea5t kh\u1ed1i l\u01b0\u1ee3ng \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, gi\u00fap x\u00e1c \u0111\u1ecbnh h\u00e0m l\u01b0\u1ee3ng n\u01b0\u1edbc v\u00e0 c\u00e1c ch\u1ea5t bay h\u01a1i kh\u00e1c trong m\u1eabu.<\/li>\n<li><strong>Nghi\u00ean c\u1ee9u qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y nhi\u1ec7t:<\/strong> TGA gi\u00fap nghi\u00ean c\u1ee9u c\u00e1c ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ee7y nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u, t\u1eeb \u0111\u00f3 x\u00e1c \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9 m\u00e0 t\u1ea1i \u0111\u00f3 v\u1eadt li\u1ec7u b\u1eaft \u0111\u1ea7u ph\u00e2n h\u1ee7y.<\/li>\n<li><strong>\u0110\u00e1nh gi\u00e1 \u0111\u1ed9 b\u1ec1n nhi\u1ec7t:<\/strong> TGA \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 t\u00ednh \u1ed5n \u0111\u1ecbnh nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau.<\/li>\n<li><strong>Ph\u00e2n t\u00edch th\u00e0nh ph\u1ea7n:<\/strong> TGA c\u00f3 th\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh th\u00e0nh ph\u1ea7n c\u1ee7a m\u1ed9t h\u1ed7n h\u1ee3p b\u1eb1ng c\u00e1ch \u0111o s\u1ef1 thay \u0111\u1ed5i kh\u1ed1i l\u01b0\u1ee3ng t\u1ea1i c\u00e1c nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau.<\/li>\n<\/ol>\n<h2>C\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n TGA<\/h2>\n<p>Qu\u00e1 tr\u00ecnh th\u1ef1c hi\u1ec7n TGA th\u01b0\u1eddng bao g\u1ed3m c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ol>\n<li>Chu\u1ea9n b\u1ecb m\u1eabu v\u1eadt: M\u1eabu v\u1eadt ph\u1ea3i \u0111\u01b0\u1ee3c l\u00e0m kh\u00f4 v\u00e0 c\u1eaft th\u00e0nh k\u00edch th\u01b0\u1edbc nh\u1ecf ph\u00f9 h\u1ee3p.<\/li>\n<li>C\u00e2n m\u1eabu: M\u1eabu v\u1eadt \u0111\u01b0\u1ee3c \u0111\u1eb7t l\u00ean c\u00e1i c\u00e2n si\u00eau nh\u1ea1y c\u1ee7a thi\u1ebft b\u1ecb TGA.<\/li>\n<li>Ch\u1ea1y nhi\u1ec7t \u0111\u1ed9: B\u1eaft \u0111\u1ea7u nung ho\u1eb7c l\u00e0m m\u00e1t m\u1eabu v\u1eadt v\u1edbi t\u1ed1c \u0111\u1ed9 nhi\u1ec7t \u0111\u1ed9 c\u1ed1 \u0111\u1ecbnh, ghi l\u1ea1i s\u1ef1 thay \u0111\u1ed5i kh\u1ed1i l\u01b0\u1ee3ng.<\/li>\n<li>Ph\u00e2n t\u00edch d\u1eef li\u1ec7u: S\u1eed d\u1ee5ng bi\u1ec3u \u0111\u1ed3 kh\u1ed1i l\u01b0\u1ee3ng theo nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec3 ph\u00e2n t\u00edch v\u00e0 \u0111\u01b0a ra k\u1ebft lu\u1eadn v\u1ec1 t\u00ednh ch\u1ea5t c\u1ee7a m\u1eabu v\u1eadt.<\/li>\n<\/ol>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>Ph\u00e2n t\u00edch nhi\u1ec7t tr\u1ecdng l\u01b0\u1ee3ng (TGA) l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n nh\u01b0ng hi\u1ec7u qu\u1ea3 \u0111\u1ec3 nghi\u00ean c\u1ee9u t\u00ednh ch\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a nhi\u1ec7t \u0111\u1ed9. Nh\u1edd TGA, ch\u00fang ta c\u00f3 th\u1ec3 hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 c\u1ea5u tr\u00fac v\u00e0 th\u00e0nh ph\u1ea7n c\u1ee7a v\u1eadt li\u1ec7u, t\u1eeb \u0111\u00f3 c\u00f3 nh\u1eefng \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n trong s\u1ea3n xu\u1ea5t v\u00e0 nghi\u00ean c\u1ee9u. \u0110\u00e2y l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt quan tr\u1ecdng v\u00e0 ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ng\u00e0nh khoa h\u1ecdc v\u00e0 k\u1ef9 thu\u1eadt v\u1eadt li\u1ec7u.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ph\u00e2n t\u00edch nhi\u1ec7t tr\u1ecdng l\u01b0\u1ee3ng (TGA): Ph\u01b0\u01a1ng ph\u00e1p \u0111o l\u01b0\u1eddng s\u1ef1 thay \u0111\u1ed5i kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt li\u1ec7u theo nhi\u1ec7t \u0111\u1ed9, \u1ee9ng d\u1ee5ng trong nghi\u00ean c\u1ee9u v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ph\u00e2n t\u00edch nhi\u1ec7t tr\u1ecdng l\u01b0\u1ee3ng (TGA)<\/title>\n<meta name=\"description\" content=\"Ph\u00e2n t\u00edch nhi\u1ec7t tr\u1ecdng l\u01b0\u1ee3ng (TGA): Ph\u01b0\u01a1ng ph\u00e1p \u0111o l\u01b0\u1eddng s\u1ef1 thay \u0111\u1ed5i kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt li\u1ec7u theo nhi\u1ec7t \u0111\u1ed9, \u1ee9ng d\u1ee5ng trong nghi\u00ean c\u1ee9u v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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