{"id":8289,"date":"2018-03-04T16:15:51","date_gmt":"2018-03-04T09:15:51","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=8289"},"modified":"2018-03-04T16:15:51","modified_gmt":"2018-03-04T09:15:51","slug":"vat-lieu-moi-de-lam-vo-tau-vu-tru","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/vat-lieu-moi-de-lam-vo-tau-vu-tru\/","title":{"rendered":"V\u1eadt li\u1ec7u m\u1edbi \u0111\u1ec3 l\u00e0m v\u1ecf t\u00e0u v\u0169 tr\u1ee5"},"content":{"rendered":"

\"62
\n<\/strong><\/p>\n

C\u00e1c nh\u00e0 h\u00f3a h\u1ecdc t\u1eeb St Petersburg \u0111\u00e3 t\u1ea1o ra m\u1ed9t lo\u1ea1i v\u1eadt li\u1ec7u m\u1edbi b\u0103\u0300ng silicone kh\u00f4ng b\u1ecb ph\u00e1 h\u1ee7y b\u1edfi nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u01a1\u0323c s\u01b0\u0309 du\u0323ng nh\u01b0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong vo\u0309 bo\u0323c cu\u0309a c\u00e1c v\u1ec7 tinh va\u0300 ta\u0300u vu\u0303 tru\u0323.<\/p>\n

Ch\u00fang t\u00f4i \u0111\u00e3 c\u00f3 th\u1ec3 l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t cho l\u1edbp ph\u1ee7 silicone l\u00ean \u0111\u1ebfn 320 \u0111\u1ed9 C, t\u01b0\u0301c la\u0300 cao h\u01a1n 120 \u0111\u1ed9 so v\u1edbi v\u1eadt li\u1ec7u silicon t\u01b0\u01a1ng t\u1ef1 \u0111\u01b0\u01a1\u0323c la\u0300m ra v\u01a1\u0301i ch\u1ea5t x\u00fac t\u00e1c cu\u0303. \u0110\u1ec3 \u0111a\u0323t \u0111\u01b0\u01a1\u0323c k\u00ea\u0301t qua\u0309 na\u0300y, ch\u00fang t\u00f4i \u0111\u00e3 ph\u00e1t tri\u1ec3n m\u1ed9t th\u00e0nh ph\u1ea7n m\u1edbi c\u1ee7a ch\u1ea5t x\u00fac t\u00e1c d\u1ef1a tr\u00ean ca\u0301c ph\u1ee9c h\u1ee3p c\u1ee7a iridium, nh\u00e0 h\u00f3a h\u1ecdc Mikhail Kinzhalov t\u1eeb \u0110\u1ea1i h\u1ecdc T\u1ed5ng h\u1ee3p Saint Petersburg cho bi\u00ea\u0301t.<\/p>\n

C\u00e1c nh\u00e0 h\u00f3a h\u1ecdc \u0111a\u0303 ph\u00e1t tri\u00ea\u0309n ca\u0301c v\u1eadt li\u1ec7u silicone \u0111\u1ea7u ti\u00ean v\u00e0o \u0111\u1ea7u th\u1ebf k\u1ef7 tr\u01b0\u1edbc, tuy nhi\u00ean, t\u01b0\u01a1ng \u0111\u1ed1i g\u1ea7n \u0111\u00e2y ca\u0301c loa\u0323i v\u00e2\u0323t li\u00ea\u0323u na\u0300y b\u0103\u0301t \u0111\u00e2\u0300u \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng v\u00e0o ng\u00e0nh c\u00f4ng nghi\u1ec7p va\u0300 \u0111a\u0303 tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng tha\u0300nh ph\u00e2\u0300n quan tr\u1ecdng \u0111\u00ea\u0309 sa\u0309n xu\u00e2\u0301t ca\u0301c loa\u0323i sa\u0309n ph\u00e2\u0309m \u0111\u00f2i h\u1ecfi m\u01b0\u0301c \u0111\u00f4\u0323 b\u00ea\u0300n v\u01b0\u0303ng cao, ti\u0301nh tr\u01a1 h\u00f3a h\u1ecdc, kh\u00f4ng b\u1ecb r\u1ec9 s\u00e9t v\u00e0 co\u0301 c\u00e1ch \u0111i\u1ec7n t\u1ed1t.<\/p>\n

Ng\u00e0y nay, v\u1eadt li\u1ec7u polime silicone c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y h\u1ea7u nh\u01b0 \u1edf kh\u1eafp m\u1ecdi n\u01a1i, b\u1eaft \u0111\u1ea7u t\u01b0\u0300 sealant cho xe \u00f4 t\u00f4 \u0111\u00ea\u0301n nh\u01b0\u0303ng d\u1ee5ng c\u1ee5 n\u1ea5u \u0103n, nh\u01b0ng, t\u1ea5t c\u1ea3 ca\u0301c loa\u0323i polime silicone \u0111\u1ec1u c\u00f3 m\u1ed9t nh\u01b0\u1ee3c \u0111i\u1ec3m chung \u0111\u00f3 l\u00e0 d\u1ec5 b\u1ecb ph\u00e1 v\u1ee1 v\u00e0 bi\u1ebfn d\u1ea1ng khi b\u1ecb nung n\u00f3ng, ngay c\u1ea3 d\u01b0\u01a1\u0301i nhi\u1ec7t \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p. Chi\u0301nh b\u01a1\u0309i v\u00e2\u0323y c\u00e1c v\u00e2\u0323t li\u1ec7u n\u00e0y kh\u00f4ng th\u1ec3 \u0111\u01b0\u01a1\u0323c s\u1eed d\u1ee5ng \u0111\u1ec3 ba\u0309o v\u00ea\u0323 v\u1ecf t\u00e0u vu\u0303 tru\u0323, t\u00e0u th\u0103m d\u00f2 kh\u00f4ng gian va\u0300 m\u00e1y bay kho\u0309i \u0103n m\u00f2n v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 ph\u00e1 hu\u0309y kh\u00e1c.<\/p>\n

C\u00e1c nh\u00e0 h\u00f3a h\u1ecdc Nga \u0111\u00e3 ti\u0300m ca\u0301ch lo\u1ea1i b\u1ecf nh\u01b0\u1ee3c \u0111i\u1ec3m n\u00e0y c\u1ee7a polyme silicone, ho\u0323 \u0111a\u0303 ta\u0323o ra m\u1ed9t ch\u1ea5t x\u00fac t\u00e1c m\u1edbi kh\u00f4ng ch\u1ec9 n\u00e2ng cao kha\u0309 n\u0103ng chi\u0323u nhi\u00ea\u0323t cu\u0309a v\u00e2\u0323t li\u00ea\u0323u na\u0300y m\u00e0 c\u00f2n thu\u1eadn ti\u1ec7n cho vi\u1ec7c t\u00ecm ki\u00ea\u0301m m\u1ed9t s\u1ef1 thay th\u1ebf cho ch\u1ea5t x\u00fac t\u00e1c platinum th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong qu\u00e1 tr\u00ecnh t\u1ed5ng h\u1ee3p c\u00e1c ch\u1ea5t n\u00e0y.<\/p>\n

D\u01b0\u01a1\u0301i nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, nguy\u00ean ch\u00e2\u0301t silicon \u1edf tr\u1ea1ng th\u00e1i l\u1ecfng. \u0110\u00ea\u0309 g\u00e2y x\u01a1 c\u1ee9ng pha\u0309i s\u01b0\u0309 du\u0323ng ch\u1ea5t x\u00fac t\u00e1c. Ng\u00e0nh c\u00f4ng nghi\u1ec7p \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 x\u00fac t\u00e1c platinum cho m\u1ee5c \u0111\u00edch n\u00e0y, nh\u01b0ng, ch\u00e2\u0301t xu\u0301c ta\u0301c na\u0300y la\u0300m cho silicone x\u01a1 c\u1ee9ng ngay l\u00e2\u0323p t\u01b0\u0301c. \u0110\u1ec3 l\u00e0m ch\u1eadm la\u0323i qu\u00e1 tr\u00ecnh n\u00e0y ph\u1ea3i c\u00f3 ch\u00e2\u0301t li\u1ec7u b\u1ed5 sung, tuy nhi\u00ean, kha\u0309 n\u0103ng chi\u0323u nhi\u00ea\u0323t cu\u0309a sa\u0309n ph\u00e2\u0309m silicone v\u1eabn la\u0300 t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p, nh\u00e0 khoa h\u1ecdc no\u0301i ti\u1ebfp.<\/p>\n

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u l\u01b0u \u00fd, th\u1eddi gian g\u1ea7n \u0111\u00e2y c\u00e1c \u0111\u1ed3ng nghi\u1ec7p H\u00e0 Lan \u0111a\u0303 ph\u00e1t hi\u1ec7n ra r\u1eb1ng, n\u00ea\u0301u trong qua\u0301 tri\u0300nh na\u0300y co\u0301 s\u01b0\u0309 du\u0323ng c\u00e1c h\u1ee3p ch\u1ea5t iridium, “h\u1ecd ha\u0300ng” c\u1ee7a platinum, thi\u0300 ca\u0301c ha\u0323t silic li\u00ean k\u1ebft v\u1edbi nhau d\u01b0\u01a1\u0301i nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n. Ph\u00e1t hi\u1ec7n n\u00e0y \u0111a\u0303 thu h\u00fat s\u1ef1 ch\u00fa \u00fd c\u1ee7a c\u00e1c nh\u00e0 khoa h\u1ecdc Nga, v\u00e0 h\u1ecd c\u1ed1 g\u1eafng c\u1ea3i thi\u1ec7n t\u00ednh ch\u1ea5t v\u00e0 t\u1ed1c \u0111\u1ed9 hoa\u0323t \u0111\u00f4\u0323ng c\u1ee7a c\u00e1c ch\u1ea5t x\u00fac t\u00e1c n\u00e0y.<\/p>\n

C\u00e1c nh\u00e0 h\u00f3a h\u1ecdc c\u1ee7a St Petersburg \u0111a\u0303 thay \u0111\u1ed5i c\u1ea5u tr\u00fac c\u1ee7a “vo\u0309 bo\u0323c” h\u1eefu c\u01a1 xung quanh c\u00e1c nguy\u00ean t\u1eed iridium, k\u00ea\u0301t qua\u0309 la\u0300 ho\u0323 \u0111a\u0303 t\u1ea1o ra nh\u01b0\u0303ng phi\u00ean b\u1ea3n kh\u00e1c nhau c\u1ee7a ch\u00e2\u0301t xu\u0301c ta\u0301c n\u00e0y, m\u1ed7i phi\u00ean ba\u0309n trong s\u1ed1 \u0111\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c “\u0111i\u1ec1u ch\u1ec9nh” \u0111\u1ec3 l\u00e0m vi\u1ec7c trong m\u1ed9t ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 c\u1ee5 th\u1ec3, nh\u01a1\u0300 \u0111o\u0301 co\u0301 th\u00ea\u0309 la\u0300m ra polyme silicone v\u1edbi nh\u1eefng \u0111\u1eb7c t\u00ednh kh\u00e1c nhau.<\/p>\n

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u l\u01b0u \u00fd r\u0103\u0300ng, c\u00e1c phi\u00ean b\u1ea3n th\u00e0nh c\u00f4ng nh\u1ea5t c\u1ee7a “super silikone” c\u00f3 kha\u0309 n\u0103ng ch\u1ecbu nhi\u1ec7t r\u1ea5t cao m\u00e0 tr\u01b0\u1edbc \u0111\u00e2y nhi\u00ea\u0323t \u0111\u00f4\u0323 cao nh\u01b0 v\u00e2\u0323y \u0111\u01b0\u1ee3c coi l\u00e0 r\u00e2\u0301t nguy hi\u1ec3m \u0111\u00f4\u0301i v\u01a1\u0301i ca\u0301c c\u00e2\u0301u tru\u0301c b\u0103\u0300ng silicone. B\u00e2y gi\u01a1\u0300 co\u0301 th\u00ea\u0309 r\u00f3t polymer \u1edf d\u1ea1ng ch\u1ea3y l\u1ecfng v\u00e0o khu\u00f4n tr\u01b0\u1edbc khi v\u1eadt li\u1ec7u na\u0300y bi\u0323 x\u01a1 c\u01b0\u0301ng. Theo c\u00e1c nh\u00e0 h\u00f3a h\u1ecdc, ph\u01b0\u01a1ng pha\u0301p na\u0300y cho ph\u00e9p s\u1eed d\u1ee5ng ch\u00e2\u0301t polyme trong c\u00e1c l\u0129nh v\u1ef1c c\u00f4ng ngh\u1ec7 v\u00e0 khoa h\u1ecdc, ma\u0300 tr\u01b0\u1edbc \u0111\u00e2y c\u00e1c ch\u1ea5t \u0111\u00f3 kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, k\u1ec3 c\u1ea3 trong li\u0303nh v\u01b0\u0323c nghi\u00ean c\u01b0\u0301u kh\u00f4ng gian.<\/p>\n

B\u00e2y gi\u1edd nha\u0300 ho\u0301a ho\u0323c Kinzhalov v\u00e0 nh\u00f3m nghi\u00ean c\u01b0\u0301u c\u1ee7a \u00f4ng \u0111ang pha\u0301t tri\u00ea\u0309n nh\u01b0\u0303ng phi\u00ean b\u1ea3n m\u1edbi c\u1ee7a ch\u1ea5t x\u00fac t\u00e1c co\u0301 s\u01b0\u0309 du\u0323ng nh\u01b0\u0303ng kim lo\u1ea1i kh\u00e1c. Ca\u0301c nh\u00e0 h\u00f3a h\u1ecdc hy v\u1ecdng r\u0103\u0300ng, ch\u00e2\u0301t xu\u0301c ta\u0301c m\u01a1\u0301i s\u1ebd c\u00f3 nh\u01b0\u0303ng \u0111\u0103\u0323c t\u00ednh th\u1eadm ch\u00ed th\u00fa v\u1ecb h\u01a1n so v\u01a1\u0301i iridium.<\/p>\n

\u00a0<\/em><\/p>\n

T\u1ea0P CH\u00cd KHOA H\u1eccC V\u00c0 C\u00d4NG NGH\u1ec6 VI\u1ec6T NAM<\/b><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00e1c nh\u00e0 h\u00f3a h\u1ecdc t\u1eeb St Petersburg \u0111\u00e3 t\u1ea1o ra m\u1ed9t lo\u1ea1i v\u1eadt li\u1ec7u m\u1edbi b\u0103\u0300ng silicone kh\u00f4ng b\u1ecb ph\u00e1 h\u1ee7y b\u1edfi nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u01a1\u0323c s\u01b0\u0309 du\u0323ng nh\u01b0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong vo\u0309 bo\u0323c cu\u0309a c\u00e1c v\u1ec7 tinh va\u0300 ta\u0300u vu\u0303 tru\u0323. Ch\u00fang t\u00f4i \u0111\u00e3 c\u00f3 th\u1ec3 l\u00e0m t\u0103ng […]<\/p>\n","protected":false},"author":18,"featured_media":8290,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-8289","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/8289","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=8289"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/8289\/revisions"}],"predecessor-version":[{"id":8585,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/8289\/revisions\/8585"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/8290"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=8289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=8289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=8289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}