Ch\u00fang ta kh\u00f4ng ai l\u1ea1 l\u00f9ng g\u00ec v\u1edbi keo d\u00e1n. Th\u00f4ng th\u01b0\u1eddng keo d\u00e1n l\u00e0 dung d\u1ecbch c\u00e1c ch\u1ea5t cao ph\u00e2n t\u1eed. Lo\u00e0i ng\u01b0\u1eddi \u0111\u00e3 bi\u1ebft d\u00f9ng c\u00e1c ch\u1ea5t keo c\u00f3 ngu\u1ed3n g\u1ed1c \u0111\u1ed9ng th\u1ef1c v\u1eadt t\u1eeb r\u1ea5t s\u1edbm. V\u00ed d\u1ee5 ng\u01b0\u1eddi ta \u0111\u00e3 s\u1edbm bi\u1ebft d\u00f9ng keo da c\u00e1, keo x\u01b0\u01a1ng, dung d\u1ecbch h\u1ed3 tinh b\u1ed9t l\u00e0m keo d\u00e1n. V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a khoa h\u1ecdc k\u1ef9 thu\u1eadt, \u0111\u00e3 xu\u1ea5t hi\u1ec7n nhi\u1ec1u lo\u1ea1i keo d\u00e1n t\u1ed5ng h\u1ee3p. \u0110\u00e3 c\u00f3 nhi\u1ec1u lo\u1ea1i keo d\u00e1n l\u1ea5y cao su l\u00e0m th\u00e0nh ph\u1ea7n ch\u00ednh v\u00e0 c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau. C\u1ea7n ch\u00fa \u00fd l\u00e0 c\u00f3 r\u1ea5t nhi\u1ec1u lo\u1ea1i keo d\u00e1n kh\u00e1c nhau v\u00e0 c\u00e1ch \u1ee9ng d\u1ee5ng c\u0169ng kh\u00e1c nhau. V\u00ed d\u1ee5 d\u00f9ng m\u00f9n c\u01b0a cho v\u00e0o keo d\u00e1n t\u1ed5ng h\u1ee3p r\u1ed3i \u0111em \u00e9p s\u1ebd \u0111\u01b0\u1ee3c “v\u00e1n \u00e9p”. D\u00f9ng c\u00e1ch t\u01b0\u01a1ng t\u1ef1 ta c\u0169ng c\u00f3 th\u1ec3 bi\u1ebfn s\u1ee3i thu\u1ef7 tinh th\u00e0nh thu\u1ef7 tinh th\u00e9p. Trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 s\u1ea3n xu\u1ea5t \u00f4 t\u00f4, m\u00e1y bay, th\u01b0\u1eddng ph\u1ea3i d\u00f9ng \u0111\u1ebfn keo d\u00e1n \u0111\u1ec3 ch\u1ebf t\u1ea1o c\u00e1c linh ki\u1ec7n c\u1ea7n thi\u1ebft. Trong c\u00e1c v\u1ec7 tinh nh\u00e2n t\u1ea1o ng\u01b0\u1eddi ta ph\u1ea3i d\u00f9ng keo d\u00e1n \u0111\u1ec3 d\u00e1n c\u00e1c t\u1ea5m pin M\u1eb7t Tr\u1eddi. Nhi\u1ec1u lo\u1ea1i t\u00ean l\u1eeda c\u1ea7n ph\u1ea3i d\u00f9ng keo d\u00e1n \u0111\u1ec3 gh\u00e9p n\u1ed1i c\u00e1c b\u1ed9 ph\u1eadn v\u1edbi nhau.<\/p>\n\n\n\n
C\u00e1c lo\u1ea1i keo d\u00e1n kh\u00e1c nhau s\u1ebd c\u00f3 t\u00ednh ch\u1ea5t kh\u00e1c nhau v\u00e0 ph\u1ea1m vi s\u1eed d\u1ee5ng c\u0169ng kh\u00e1c nhau. V\u00ed d\u1ee5 lo\u1ea1i keo d\u00e1n th\u01b0\u1eddng d\u00f9ng trong gia \u0111\u00ecnh l\u00e0 keo tr\u1eafng. Keo tr\u1eafng ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 d\u00e1n g\u1ed7, d\u00e1n gi\u1ea5y, d\u00e1n keo x\u1ed1p, d\u00e1n \u0111\u1ed3 d\u00f9ng b\u1eb1ng da gi\u1ea3. Th\u00e0nh ph\u1ea7n ch\u1ee7 y\u1ebfu c\u1ee7a keo tr\u1eafng l\u00e0 polyaxetatetyl, v\u00ec h\u1ee3p ch\u1ea5t n\u00e0y c\u00f3 m\u00e0u tr\u1eafng s\u1eefa n\u00ean ng\u01b0\u1eddi ta g\u1ecdi \u0111\u00f3 l\u00e0 keo tr\u1eafng. Keo tr\u1eafng c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u0111\u00f3ng r\u1eafn ngay \u1edf nhi\u1ec7t \u0111\u1ed9 th\u01b0\u1eddng trong ph\u00f2ng v\u00e0 c\u00f3 \u0111\u1ed9 d\u00ednh t\u1ed1t. Th\u1ebf nh\u01b0ng keo tr\u1eafng kh\u00f4ng d\u00e1n \u0111\u01b0\u1ee3c c\u00e1c \u0111\u1ed3 v\u1eadt b\u1eb1ng cao su, kim lo\u1ea1i, thu\u1ef7 tinh\u2026 Mu\u1ed1n d\u00e1n \u0111\u01b0\u1ee3c v\u1eadt li\u1ec7u b\u1eb1ng cao su ng\u01b0\u1eddi ta ph\u1ea3i d\u00f9ng keo phenolfocman\u0111ehyt – florua butyl. \u0110\u00e2y l\u00e0 lo\u1ea1i keo d\u00e1n c\u00f3 \u0111\u1ed9 d\u00ednh t\u1ed1t, s\u1eed d\u1ee5ng ti\u1ec7n l\u1ee3i, c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 d\u00e1n nhi\u1ec1u lo\u1ea1i kim lo\u1ea1i v\u00e0 phi kim. V\u00ec keo c\u00f3 \u0111\u1ed9 d\u00ednh t\u1ed1t n\u00ean \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 keo c\u00f3 “c\u01b0\u1eddng \u0111\u1ed9 cao”, “keo nh\u01b0 \u00fd”.<\/p>\n\n\n\n
N\u1ebfu b\u1ea1n c\u1ea7n d\u00e1n c\u00e1c \u0111\u1ed3 v\u1eadt b\u1eb1ng th\u1ee7y tinh, b\u1eb1ng g\u1ed1m th\u00ec kh\u00f4ng th\u1ec3 d\u00f9ng c\u00e1c lo\u1ea1i keo d\u00e1n th\u01b0\u1eddng. \u0110\u1ec3 d\u00e1n c\u00f3 hi\u1ec7u qu\u1ea3 b\u1ea1n c\u1ea7n d\u00f9ng keo epoxy. Keo epoxy l\u00e0 keo d\u00e1n c\u00f3 hai th\u00e0nh ph\u1ea7n. \u0110\u1ec3 ti\u1ec7n d\u00f9ng trong gia \u0111\u00ecnh, m\u1ed7i th\u00e0nh ph\u1ea7n c\u1ee7a keo \u0111\u01b0\u1ee3c ch\u1ee9a trong m\u1ed9t \u1ed1ng ri\u00eang, tr\u01b0\u1edbc khi d\u00f9ng \u0111em tr\u1ed9n hai th\u00e0nh ph\u1ea7n v\u1edbi nhau r\u1ed3i s\u1eed d\u1ee5ng. Trong m\u1ed9t \u1ed1ng ng\u01b0\u1eddi ta ch\u1ee9a keo epoxy v\u00e0 benzoat \u0111imetyl \u0111ibutyl (ch\u1ea5t t\u0103ng \u0111\u1ed9 d\u00ednh) c\u00f2n \u1ed1ng kia ch\u1ee9a dung d\u1ecbch phenylen\u0111ianin (ch\u1ea5t \u0111\u00f3ng r\u1eafn). Khi d\u00f9ng ta ch\u1ec9 c\u1ea7n b\u00f4i h\u1ed7n h\u1ee3p l\u00ean b\u1ec1 m\u1eb7t v\u1eadt c\u1ea7n d\u00e1n r\u1ed3i \u00e9p ch\u1eb7t. Sau hai gi\u1edd th\u00ec ch\u1ed7 c\u1ea7n d\u00e1n s\u1ebd \u0111\u00f3ng r\u1eafn v\u00e0 d\u00ednh ch\u1eb7t.<\/p>\n\n\n\n
Keo d\u00e1n epoxy l\u00e0 lo\u1ea1i keo c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 d\u00ednh r\u1ea5t cao. V\u00ec trong ph\u00e2n t\u1eed keo c\u00f3 ch\u1ee9a g\u1ed1c epoxy r\u1ea5t linh ho\u1ea1t, c\u00f3 th\u1ec3 ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c ph\u00e2n t\u1eed tr\u00ean b\u1ec1 m\u1eb7t v\u1eadt c\u1ea7n d\u00e1n v\u00e0 h\u00ecnh th\u00e0nh c\u00e1c l\u1ef1c li\u00ean k\u1ebft r\u1ea5t b\u1ec1n. V\u00ec v\u1eady ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 d\u00f9ng keo epoxy \u0111\u1ec3 d\u00e1n nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u: Kim lo\u1ea1i, ch\u1ea5t d\u1ebbo, b\u00ea t\u00f4ng\u2026 c\u0169ng nh\u01b0 th\u1ee7y tinh, g\u1ed1m, s\u1ee9. V\u00ec v\u1eady keo d\u00e1n epoxy \u0111\u01b0\u1ee3c t\u1eb7ng danh hi\u1ec7u l\u00e0 keo d\u00e1n v\u1ea1n n\u0103ng. Keo v\u1ea1n n\u0103ng kh\u00f4ng ch\u1ec9 \u0111\u01b0\u1ee3c d\u00f9ng trong cu\u1ed9c s\u1ed1ng h\u1eb1ng ng\u00e0y m\u00e0 c\u00f2n \u0111\u01b0\u1ee3c d\u00f9ng trong s\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p, nh\u01b0 \u0111\u1ec3 d\u00e1n gh\u00e9p n\u1ed1i c\u00e1c c\u1ea5u ki\u1ec7n kim lo\u1ea1i trong x\u00e2y d\u1ef1ng, n\u00ean keo epoxy c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 keo x\u00e2y d\u1ef1ng.<\/p>\n\n\n\n
\u0110\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c d\u00e1n b\u1eb1ng keo v\u1ea1n n\u0103ng \u0111\u01b0\u1ee3c t\u1ed1t ta ph\u1ea3i ch\u00fa \u00fd \u0111\u1ebfn vi\u1ec7c l\u00e0m s\u1ea1ch c\u00e1c b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c d\u00e1n. C\u00e1c v\u1ebft d\u1ea7u \u1ed1, b\u1ee5i, c\u00e1c v\u1ebft g\u1ec9 kim lo\u1ea1i \u1edf tr\u00ean b\u1ec1 m\u1eb7t c\u1ea7n d\u00e1n c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1nh s\u1ea1ch tr\u01b0\u1edbc khi ti\u1ebfn h\u00e0nh d\u00e1n. \u0110i\u1ec1u c\u1ea7n ch\u00fa \u00fd l\u00e0 n\u1ebfu ch\u1ec9 d\u00f9ng \u0111\u01a1n \u0111\u1ed9c m\u1ed9t dung d\u1ecbch trong t\u1eebng \u1ed1ng (A ho\u1eb7c B) th\u00ec s\u1ebd kh\u00f4ng d\u00e1n \u0111\u01b0\u1ee3c v\u00ec ch\u1ed7 d\u00e1n s\u1ebd kh\u00f4ng kh\u00f4, kh\u00f4ng \u0111\u00f3ng r\u1eafn. Keo epoxy s\u1ebd kh\u00f4ng kh\u00f4 n\u1ebfu kh\u00f4ng c\u00f3 ch\u1ea5t \u0111\u00f3ng r\u1eafn. Tr\u00e1i l\u1ea1i sau khi tr\u1ed9n hai dung d\u1ecbch A v\u00e0 B v\u1edbi nhau th\u00ec h\u1ed7n h\u1ee3p ph\u1ea3i \u0111em d\u00f9ng h\u1ebft, n\u1ebfu kh\u00f4ng s\u1ed1 nh\u1ef1a c\u00f2n d\u01b0 s\u1ebd \u0111\u00f3ng r\u1eafn v\u00e0 kh\u00f4ng c\u00f2n d\u00f9ng \u0111\u01b0\u1ee3c n\u1eefa.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: Keo d\u00e1n epoxy; Keo v\u1ea1n n\u0103ng; Ch\u1ea5t \u0111\u00f3ng r\u1eafn.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ch\u00fang ta kh\u00f4ng ai l\u1ea1 l\u00f9ng g\u00ec v\u1edbi keo d\u00e1n. Th\u00f4ng th\u01b0\u1eddng keo d\u00e1n l\u00e0 dung d\u1ecbch c\u00e1c ch\u1ea5t cao ph\u00e2n t\u1eed. Lo\u00e0i ng\u01b0\u1eddi \u0111\u00e3 bi\u1ebft d\u00f9ng c\u00e1c ch\u1ea5t keo c\u00f3 ngu\u1ed3n g\u1ed1c \u0111\u1ed9ng th\u1ef1c v\u1eadt t\u1eeb r\u1ea5t s\u1edbm. V\u00ed d\u1ee5 ng\u01b0\u1eddi ta \u0111\u00e3 s\u1edbm bi\u1ebft d\u00f9ng keo da c\u00e1, keo x\u01b0\u01a1ng, dung d\u1ecbch h\u1ed3 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[8,15],"tags":[],"class_list":["post-7864","post","type-post","status-publish","format-standard","hentry","category-hoa-hoc","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7864","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=7864"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7864\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7864"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7864"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}