Ch\u01a1i b\u00f3ng b\u00e0n, ngo\u00e0i k\u0129 thu\u1eadt c\u1ea7m v\u1ee3t c\u1ee7a v\u1eadn \u0111\u1ed9ng vi\u00ean c\u00f3 t\u00ednh quy\u1ebft \u0111\u1ecbnh ra th\u00ec t\u00e1c d\u1ee5ng c\u1ee7a c\u00e1i v\u1ee3t c\u0169ng r\u1ea5t quan tr\u1ecdng. \u0110\u1ed1i v\u1edbi m\u1ed9t v\u1eadn \u0111\u1ed9ng vi\u00ean b\u00f3ng b\u00e0n, c\u00e1i v\u1ee3t c\u0169ng t\u1ef1a nh\u01b0 v\u0169 kh\u00ed trong tay ng\u01b0\u1eddi chi\u1ebfn s\u0129.<\/p>\n\n\n\n
Theo \u0111\u00e0 ph\u00e1t tri\u1ec3n kh\u00f4ng ng\u1eebng c\u1ee7a phong tr\u00e0o b\u00f3ng b\u00e0n th\u1ebf gi\u1edbi, c\u00e1c l\u1ed1i \u0111\u00e1nh v\u00e0 k\u0129 thu\u1eadt c\u0169ng \u0111ang \u0111\u01b0\u1ee3c s\u00e1ng t\u1ea1o kh\u00f4ng ng\u1eebng, c\u00e1c ch\u1ee7ng lo\u1ea1i v\u1ee3t b\u00f3ng b\u00e0n c\u0169ng ng\u00e0y m\u1ed9t nhi\u1ec1u l\u00ean.<\/p>\n\n\n\n
Thu\u1edf ban \u0111\u1ea7u, \u0111\u00e1nh b\u00f3ng b\u00e0n \u0111\u1ec1u d\u00f9ng v\u1ee3t g\u1ed7. V\u1ee3t l\u00e0m b\u1eb1ng g\u1ed7 thi\u1ebfu l\u1ef1c \u0111\u00e0n h\u1ed3i v\u00e0 l\u1ef1c ma s\u00e1t, t\u1ed1c \u0111\u1ed9 \u0111\u00e1nh b\u00f3ng r\u1ea5t ch\u1eadm, ch\u1ec9 l\u00e0 \u0111\u1ea9y qua \u0111\u1ea9y l\u1ea1i, khi ng\u1eabu nhi\u00ean th\u1ea5y c\u00f3 b\u00f3ng l\u00ean cao th\u00ec m\u1edbi v\u1ee5t m\u1ea1nh m\u1ed9t c\u00e1i.<\/p>\n\n\n\n
V\u1ec1 sau xu\u1ea5t hi\u1ec7n v\u1ee3t cao su. Tr\u00ean m\u1eb7t cao su ph\u00e2n b\u1ed5 \u0111\u1ea7y nh\u1eefng h\u1ea1t nh\u1ecf m\u1ec1m m\u1ec1m. Khi v\u1ee3t ti\u1ebfp x\u00fac v\u1edbi b\u00f3ng, kh\u00f4ng ph\u1ea3i ch\u1ec9 c\u00f3 m\u1ed9t \u0111i\u1ec3m ti\u1ebfp x\u00fac nh\u01b0 c\u1ee7a v\u1ee3t g\u1ed7, m\u00e0 l\u00e0 m\u1ed9t m\u1eb7t cong. \u0110i\u1ec1u \u0111\u00f3 m\u1edf r\u1ed9ng di\u1ec7n t\u00edch ti\u1ebfp x\u00fac gi\u1eefa v\u1ee3t v\u00e0 b\u00f3ng, gia t\u0103ng l\u1ef1c ma s\u00e1t \u0111\u1ed1i v\u1edbi b\u00f3ng. Khi v\u1ee5t b\u00f3ng, c\u00f3 th\u1ec3 l\u00e0m cho b\u00f3ng b\u1ecb xo\u00e1y, bay theo \u0111\u01b0\u1eddng c\u00e1nh cung, n\u00e2ng cao k\u0129 thu\u1eadt \u0111\u00e1nh b\u00f3ng l\u00ean.<\/p>\n\n\n\n
N\u0103m 1952, s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a v\u1ee3t x\u1ed1p \u0111\u00e3 l\u00e0m cho k\u0129 thu\u1eadt \u0111\u00e1nh b\u00f3ng ph\u00e1t tri\u1ec3n th\u00eam m\u1ed9t b\u01b0\u1edbc. V\u00ec b\u1ecdt x\u1ed1p r\u1ea5t m\u1ec1m m\u1ea1i, b\u00ean trong ch\u1ee9a \u0111\u1ea7y l\u1ed7 kh\u00ed nh\u1ecf x\u00edu n\u00ean c\u00f3 t\u00ednh \u0111\u00e0n h\u1ed3i m\u1ea1nh. Khi v\u1ee5t b\u00f3ng, qu\u1ea3 b\u00f3ng ti\u1ebfp x\u00fac v\u1edbi b\u1ecdt x\u1ed1p, d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c \u0111\u00e0n h\u1ed3i, t\u1ed1c \u0111\u1ed9 ra b\u00f3ng nhanh h\u01a1n, l\u1ef1c t\u0103ng l\u00ean. Song, v\u1ee3t \u0111\u01a1n thu\u1ea7n d\u00f9ng b\u1ecdt x\u1ed1p, do l\u1ef1c ma s\u00e1t kh\u00f4ng \u0111\u1ee7, kh\u00f3 kh\u1ed1ng ch\u1ebf t\u00ednh chu\u1ea9n x\u00e1c c\u1ee7a b\u00f3ng v\u00e0 kh\u00f3 sinh ra xo\u00e1y b\u00f3ng. Th\u1ebf l\u00e0 c\u00f3 ng\u01b0\u1eddi ngh\u0129 ra m\u1ed9t c\u00e1ch l\u00e0m hay: d\u00e1n m\u1ed9t m\u00e0ng cao su c\u00f3 h\u1ea1t r\u1ea3i \u0111\u1ec1u kh\u00f4ng d\u00e0y qu\u00e1 2 mm l\u00ean tr\u00ean l\u1edbp b\u1ecdt x\u1ed1p, l\u1ea1i v\u1eeba c\u00f3 t\u00ednh b\u00e1m d\u00ednh \u0111i\u1ec1u khi\u1ec3n b\u00f3ng c\u1ee7a cao su.<\/p>\n\n\n\n
Vi\u1ec7c d\u00e1n cao su l\u00ean m\u1eb7t x\u1ed1p c\u0169ng \u0111\u00e1ng \u0111\u01b0\u1ee3c ch\u00fa \u00fd. C\u00f3 c\u00e1i d\u00e1n thu\u1eadn (h\u1ea1t cao su \u1edf ngo\u00e0i), c\u00f3 c\u00e1i d\u00e1n ng\u01b0\u1ee3c (h\u1ea1t cao su \u1edf trong). \u0110i\u1ec1u \u0111\u00f3 li\u00ean quan t\u1edbi \u0111\u1eb7c t\u00ednh v\u1eadt l\u00ed c\u1ee7a hai lo\u1ea1i v\u1ee3t kh\u00e1c nhau, c\u00f9ng v\u1edbi y\u00eau c\u1ea7u kh\u00e1c nhau c\u1ee7a v\u1eadn \u0111\u1ed9ng vi\u00ean v\u1ec1 v\u1ee3t.<\/p>\n\n\n\n
V\u00ed d\u1ee5 nh\u01b0, v\u1eadn \u0111\u1ed9ng vi\u00ean ch\u01a1i ki\u1ec3u t\u1ea5n c\u00f4ng nhanh th\u00ec n\u00f3i chung \u0111\u1ec1u ch\u1ecdn lo\u1ea1i v\u1ee3t cao su d\u00e1n thu\u1eadn, k\u1ebft h\u1ee3p v\u1edbi b\u1ecdt x\u1ed1p. V\u00ec l\u1ef1c ph\u1ea3n \u0111\u00e0n h\u1ed3i c\u1ee7a cao su d\u00e1n thu\u1eadn m\u1ea1nh h\u01a1n c\u1ee7a cao su d\u00e1n ng\u01b0\u1ee3c, h\u1ea1t c\u1ee7a n\u00f3 n\u1eb1m \u1edf ngo\u00e0i, m\u1eb7t ti\u1ebfp x\u00fac c\u1ee7a cao su v\u1edbi b\u00f3ng nh\u1ecf, th\u1eddi gian d\u1eebng l\u1ea1i ng\u1eafn, t\u1ed1c \u0111\u1ed9 ra b\u00f3ng nhanh, c\u00f3 l\u1ee3i cho vi\u1ec7c t\u0103ng nhanh t\u1ed1c \u0111\u1ed9 t\u1ea5n c\u00f4ng v\u00e0 s\u1ee9c m\u1ea1nh c\u1ee7a v\u1eadn \u0111\u1ed9ng vi\u00ean ki\u1ec3u t\u1ea5n c\u00f4ng nhanh.<\/p>\n\n\n\n
C\u00f2n v\u1ee3t cao su d\u00e1n ng\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi b\u1ecdt x\u1ed1p th\u00ec c\u00e0ng th\u00edch h\u1ee3p cho vi\u1ec7c \u0111\u00e1nh b\u00f3ng theo h\u00ecnh v\u00f2ng cung v\u00e0 c\u1eaft b\u00f3ng c\u1ee7a v\u1eadn \u0111\u1ed9ng vi\u00ean. B\u00f3ng \u0111\u01b0\u1eddng v\u00f2ng cung xo\u00e1y l\u00ean tr\u00ean, c\u1eaft b\u00f3ng xo\u00e1y xu\u1ed1ng d\u01b0\u1edbi. Hai l\u1ed1i \u0111\u00e1nh n\u00e0y \u0111\u1ec1u nh\u1ea5n m\u1ea1nh v\u00e0o vi\u1ec7c ph\u00e1t huy b\u00f3ng xo\u00e1y. Cao su d\u00e1n ng\u01b0\u1ee3c th\u00ec c\u00e1c h\u1ea1t \u1edf b\u00ean trong, b\u1ec1 m\u1eb7t c\u1ee7a n\u00f3 r\u1ea5t c\u00f3 t\u00ednh b\u00e1m d\u00ednh. Khi \u0111\u00e1nh b\u00f3ng, di\u1ec7n t\u00edch ti\u1ebfp x\u00fac gi\u1eefa v\u1ee3t v\u00e0 b\u00f3ng l\u1edbn, l\u1ef1c ma s\u00e1t sinh ra \u0111\u1ed1i v\u1edbi b\u00f3ng c\u0169ng kh\u00e1 l\u1edbn, c\u00e0ng c\u00f3 l\u1ee3i cho \u0111\u1eb7c \u0111i\u1ec3m ph\u00e1t huy b\u00f3ng xo\u00e1y. \u0110\u1ed3ng th\u1eddi, v\u00ec gi\u1eefa m\u1eb7t cao su c\u1ee7a n\u00f3 v\u00e0 l\u1edbp b\u1ecdt x\u1ed1p c\u00f3 th\u00eam m\u1ed9t l\u1edbp h\u1ea1t b\u1eb1ng cao su, gi\u1eefa c\u00e1c h\u1ea1t n\u00e0y c\u00f3 r\u1ea5t nhi\u1ec1u khe tr\u1ed1ng, khi v\u1ee3t ti\u1ebfp x\u00fac v\u1edbi b\u00f3ng, m\u1eb7t v\u1ee3t l\u00f5m v\u00e0o trong c\u00e0ng nhi\u1ec1u, di\u1ec7n t\u00edch ti\u1ebfp x\u00fac gi\u1eefa v\u1ee3t v\u00e0 b\u00f3ng c\u00e0ng l\u1edbn, l\u1ef1c ma s\u00e1t c\u0169ng theo \u0111\u00f3 t\u0103ng l\u00ean, v\u1eadn \u0111\u1ed9ng vi\u00ean c\u00f3 th\u1ec3 l\u1ee3i d\u1ee5ng l\u1ef1c ma s\u00e1t, l\u00e0m cho b\u00f3ng xo\u00e1y th\u00eam ph\u1ea7n l\u1ee3i h\u1ea1i.<\/p>\n\n\n\n
Tr\u00ean chi\u1ebfc v\u1ee3t b\u00f3ng b\u00e0n nho nh\u1ecf m\u00e0 c\u00f3 bi\u1ebft bao \u0111i\u1ec1u c\u1ea7n h\u1ecdc h\u1ecfi. Nh\u01b0ng m\u00e0u s\u1eafc c\u1ee7a hai m\u1eb7t v\u1ee3t v\u00ec sao l\u1ea1i kh\u00e1c nhau? \u0110\u00f3 l\u00e0 do c\u00f3 v\u1eadn \u0111\u1ed9ng vi\u00ean s\u1eed d\u1ee5ng lo\u1ea1i v\u1ee3t m\u1ed9t ph\u00eda d\u00e1n thu\u1eadn, m\u1ed9t ph\u00eda d\u00e1n ng\u01b0\u1ee3c, khi thi \u0111\u1ea5u lu\u00f4n thay \u0111\u1ed5i ph\u00eda thu\u1eadn ngh\u1ecbch, l\u00e0m cho \u0111\u1ed1i ph\u01b0\u01a1ng kh\u00f3 ph\u00e1t hi\u1ec7n ra \u0111\u01b0\u1eddng b\u00f3ng c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n
\u0110\u1ec3 cho thi \u0111\u1ea5u b\u00f3ng b\u00e0n c\u00e0ng c\u00f3 t\u00ednh th\u01b0\u1edfng th\u1ee9c h\u01a1n, H\u1ed9i li\u00ean hi\u1ec7p B\u00f3ng b\u00e0n Qu\u1ed1c t\u1ebf, trong quy t\u1eafc m\u1edbi, c\u00f3 n\u00eau ra m\u1ed9t lo\u1ea1t c\u00e1c quy \u0111\u1ecbnh c\u00f3 t\u00ednh ch\u1ea5t h\u1ea1n ch\u1ebf v\u1ec1 \u0111\u1ed9 d\u00e0y c\u1ee7a b\u1ecdt x\u1ed1p v\u00e0 h\u1ea1t cao su tr\u00ean m\u1eb7t v\u1ee3t, v\u1ec1 \u0111\u1ed9 d\u00e0i c\u1ee7a cao su v.v., trong \u0111\u00f3 c\u00f3 m\u1ed9t quy \u0111\u1ecbnh l\u00e0 cao su d\u00e1n thu\u1eadn v\u00e0 d\u00e1n ng\u01b0\u1ee3c \u1edf hai m\u1eb7t v\u1ee3t ph\u1ea3i d\u00f9ng m\u00e0u s\u1eafc kh\u00e1c nhau.<\/p>\n\n\n\n
T\u1eeb kh\u00f3a : V\u1ee3t b\u00f3ng b\u00e0n; L\u1ef1c ma s\u00e1t; T\u00ednh \u0111\u00e0n h\u1ed3i.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ch\u01a1i b\u00f3ng b\u00e0n, ngo\u00e0i k\u0129 thu\u1eadt c\u1ea7m v\u1ee3t c\u1ee7a v\u1eadn \u0111\u1ed9ng vi\u00ean c\u00f3 t\u00ednh quy\u1ebft \u0111\u1ecbnh ra th\u00ec t\u00e1c d\u1ee5ng c\u1ee7a c\u00e1i v\u1ee3t c\u0169ng r\u1ea5t quan tr\u1ecdng. \u0110\u1ed1i v\u1edbi m\u1ed9t v\u1eadn \u0111\u1ed9ng vi\u00ean b\u00f3ng b\u00e0n, c\u00e1i v\u1ee3t c\u0169ng t\u1ef1a nh\u01b0 v\u0169 kh\u00ed trong tay ng\u01b0\u1eddi chi\u1ebfn s\u0129. Theo \u0111\u00e0 ph\u00e1t tri\u1ec3n kh\u00f4ng ng\u1eebng c\u1ee7a phong […]<\/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":[15,7],"tags":[],"class_list":["post-5557","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5557","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=5557"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5557\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}