{"id":15980,"date":"2021-11-27T19:33:00","date_gmt":"2021-11-27T12:33:00","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=15980"},"modified":"2021-11-27T19:33:01","modified_gmt":"2021-11-27T12:33:01","slug":"nguoi-ta-lam-cach-nao-de-dan-lop-vo-khong-dinh-len-cac-vat-dung-nha-bep","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/nguoi-ta-lam-cach-nao-de-dan-lop-vo-khong-dinh-len-cac-vat-dung-nha-bep\/","title":{"rendered":"Ng\u01b0\u1eddi ta l\u00e0m c\u00e1ch n\u00e0o \u0111\u1ec3 d\u00e1n l\u1edbp v\u1ecf kh\u00f4ng d\u00ednh l\u00ean c\u00e1c v\u1eadt d\u1ee5ng nh\u00e0 b\u1ebfp?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 10 &#8211; Arkady Leokum<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u01b0\u1ee3c ph\u00e1t hi\u1ec7n ra v\u00e0o n\u0103m 1938 b\u1edfi nh\u00e0 h\u00f3a h\u1ecdc ng\u01b0\u1eddi M\u1ef9 l\u00e0 ti\u1ebfn s\u0129 Roy Plunkett c\u1ee7a c\u00f4ng ty DuPont, polytetrafluorethylene (PTFE) &#8211; t\u00ean th\u01b0\u01a1ng m\u1ea1i l\u00e0 Teflon, n\u1ed5i ti\u1ebfng nh\u1edd v\u00e0o kh\u1ea3 n\u0103ng kh\u00f4ng d\u00ednh c\u1ee7a n\u00f3. N\u00f3 c\u0169ng l\u00e0 m\u1ed9t ch\u1ea5t r\u1ea5t b\u1ec1n v\u00e0 tr\u01a1, ch\u1ecbu \u0111\u01b0\u1ee3c acid, ki\u1ec1m, nhi\u1ec7t v\u00e0 c\u00e1c dung m\u00f4i. T\u1ea5t c\u1ea3 nh\u1eefng kh\u1ea3 n\u0103ng c\u1ee7a n\u00f3 \u0111\u1ec1u r\u1ea5t tuy\u1ec7t v\u1eddi cho \u0111\u1ebfn khi ng\u01b0\u1eddi ta ti\u1ebfn \u0111\u1ebfn th\u1eadt s\u1ef1 s\u1eed d\u1ee5ng n\u00f3 nh\u01b0 m\u1ed9t v\u1ecf b\u1ecdc, khi c\u00e1c \u0111\u1eb7c t\u00ednh h\u00f3a h\u1ecdc tr\u01a1 c\u1ee7a n\u00f3 bi\u1ebfn th\u00e0nh m\u1ed9t tr\u1edf ng\u1ea1i. L\u00e0m sao c\u00f3 th\u1ec3 d\u00e1n n\u00f3 d\u00ednh v\u00e0o b\u1ec1 m\u1eb7t kim lo\u1ea1i?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ea5n \u0111\u1ec1 khi\u1ebfn PTFE d\u00ednh v\u00e0o c\u00e1c b\u1ec1 m\u1eb7t kim lo\u1ea1i \u0111\u01b0\u1ee3c Louis Hartmann gi\u1ea3i quy\u1ebft v\u00e0o n\u0103m 1954. \u00d4ng s\u1eed d\u1ee5ng acid \u0111\u1ec3 kh\u1eafc c\u00e1c l\u1ed7 tr\u00ean b\u1ec1 m\u1eb7t kim lo\u1ea1i, sau \u0111\u00f3 \u00e9p v\u00e0o m\u1ed9t l\u1edbp PTFE v\u00e0 nung n\u00f3 \u1edf nhi\u1ec7t \u0111\u1ed9 4000C. PTFE n\u00f3ng ch\u1ea3y th\u1ea5m v\u00e0o c\u00e1c l\u1ed7 v\u00e0 \u0111\u00f4ng \u0111\u1eb7c l\u1ea1i, ghim ch\u1eb7t l\u1edbp v\u1ecf v\u00e0o b\u1ec1 m\u1eb7t.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 10 &#8211; Arkady Leokum \u0110\u01b0\u1ee3c ph\u00e1t hi\u1ec7n ra v\u00e0o n\u0103m 1938 b\u1edfi nh\u00e0 h\u00f3a h\u1ecdc ng\u01b0\u1eddi M\u1ef9 l\u00e0 ti\u1ebfn s\u0129 Roy Plunkett c\u1ee7a c\u00f4ng ty DuPont, polytetrafluorethylene (PTFE) &#8211; t\u00ean th\u01b0\u01a1ng m\u1ea1i l\u00e0 Teflon, n\u1ed5i ti\u1ebfng nh\u1edd v\u00e0o kh\u1ea3 n\u0103ng kh\u00f4ng d\u00ednh c\u1ee7a [&hellip;]<\/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":[15],"tags":[],"class_list":["post-15980","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15980","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=15980"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15980\/revisions"}],"predecessor-version":[{"id":15981,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/15980\/revisions\/15981"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=15980"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=15980"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=15980"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}