{"id":54601,"date":"2022-07-18T12:59:10","date_gmt":"2022-07-18T17:59:10","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-the-distance-a-sheet-can-stretch-before-it-completely-breaks\/"},"modified":"2025-01-21T07:29:23","modified_gmt":"2025-01-21T12:29:23","slug":"what-is-the-distance-a-sheet-can-stretch-before-it-completely-breaks","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/what-is-the-distance-a-sheet-can-stretch-before-it-completely-breaks\/","title":{"rendered":"Gi\u1edbi h\u1ea1n k\u00e9o gi\u00e3n c\u1ee7a m\u1ed9t t\u1ea5m v\u1ea3i tr\u01b0\u1edbc khi \u0111\u1ee9t"},"content":{"rendered":"<p>Vi\u1ec7c m\u1ed9t t\u1ea5m v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 k\u00e9o gi\u00e3n bao xa tr\u01b0\u1edbc khi \u0111\u1ee9t ho\u00e0n to\u00e0n l\u00e0 m\u1ed9t c\u00e2u h\u1ecfi ph\u1ee9c t\u1ea1p, ph\u1ee5 thu\u1ed9c v\u00e0o r\u1ea5t nhi\u1ec1u y\u1ebfu t\u1ed1. Kh\u00f4ng c\u00f3 m\u1ed9t con s\u1ed1 c\u1ee5 th\u1ec3 n\u00e0o c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng cho t\u1ea5t c\u1ea3 c\u00e1c tr\u01b0\u1eddng h\u1ee3p.  S\u1ef1 \u0111a d\u1ea1ng v\u1ec1 v\u1eadt li\u1ec7u, k\u00edch th\u01b0\u1edbc, h\u00ecnh d\u1ea1ng, \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng v\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m \u0111\u1ec1u \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 gi\u00e3n d\u00e0i t\u1edbi h\u1ea1n n\u00e0y.  B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o ph\u00e2n t\u00edch c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng k\u00e9o gi\u00e3n c\u1ee7a m\u1ed9t t\u1ea5m v\u1eadt li\u1ec7u v\u00e0 gi\u1ea3i th\u00edch t\u1ea1i sao vi\u1ec7c x\u00e1c \u0111\u1ecbnh m\u1ed9t kho\u1ea3ng c\u00e1ch k\u00e9o gi\u00e3n c\u1ee5 th\u1ec3 tr\u01b0\u1edbc khi \u0111\u1ee9t l\u1ea1i kh\u00f3 kh\u0103n \u0111\u1ebfn v\u1eady.<\/p>\n<h3>V\u1eadt li\u1ec7u v\u00e0 c\u1ea5u tr\u00fac<\/h3>\n<p>B\u1ea3n ch\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh h\u00e0ng \u0111\u1ea7u.  M\u1ed9t t\u1ea5m cao su s\u1ebd c\u00f3 \u0111\u1ed9 gi\u00e3n d\u00e0i t\u1edbi h\u1ea1n l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi m\u1ed9t t\u1ea5m th\u1ee7y tinh.  C\u1ea5u tr\u00fac ph\u00e2n t\u1eed v\u00e0 li\u00ean k\u1ebft gi\u1eefa c\u00e1c ph\u00e2n t\u1eed \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ecbu bi\u1ebfn d\u1ea1ng c\u1ee7a v\u1eadt li\u1ec7u. V\u00ed d\u1ee5, c\u00e1c polyme nh\u01b0 nh\u1ef1a c\u00f3 th\u1ec3 k\u00e9o gi\u00e3n \u0111\u00e1ng k\u1ec3 do c\u1ea5u tr\u00fac chu\u1ed7i d\u00e0i c\u1ee7a ch\u00fang, trong khi c\u00e1c v\u1eadt li\u1ec7u gi\u00f2n nh\u01b0 g\u1ed1m s\u1ee9 c\u00f3 li\u00ean k\u1ebft c\u1ee9ng nh\u1eafc v\u00e0 d\u1ec5 g\u00e3y v\u1ee1.<\/p>\n<h3>K\u00edch th\u01b0\u1edbc v\u00e0 h\u00ecnh d\u1ea1ng<\/h3>\n<p>K\u00edch th\u01b0\u1edbc v\u00e0 h\u00ecnh d\u1ea1ng c\u1ee7a t\u1ea5m v\u1eadt li\u1ec7u c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 gi\u00e3n d\u00e0i t\u1edbi h\u1ea1n.  M\u1ed9t t\u1ea5m m\u1ecfng v\u00e0 d\u00e0i s\u1ebd d\u1ec5 b\u1ecb k\u00e9o gi\u00e3n h\u01a1n m\u1ed9t t\u1ea5m d\u00e0y v\u00e0 ng\u1eafn c\u00f9ng ch\u1ea5t li\u1ec7u.  H\u00ecnh d\u1ea1ng c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng, v\u00ed d\u1ee5, m\u1ed9t t\u1ea5m c\u00f3 l\u1ed7 ho\u1eb7c v\u1ebft n\u1ee9t s\u1ebd c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o gi\u1ea3m v\u00e0 d\u1ec5 \u0111\u1ee9t h\u01a1n.<\/p>\n<h3>L\u1ef1c t\u00e1c \u0111\u1ed9ng v\u00e0 t\u1ed1c \u0111\u1ed9 k\u00e9o gi\u00e3n<\/h3>\n<p>L\u1ef1c t\u00e1c \u0111\u1ed9ng v\u00e0 t\u1ed1c \u0111\u1ed9 k\u00e9o gi\u00e3n c\u0169ng l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng.  M\u1ed9t l\u1ef1c k\u00e9o \u0111\u1ed9t ng\u1ed9t v\u00e0 m\u1ea1nh s\u1ebd d\u1ec5 l\u00e0m \u0111\u1ee9t v\u1eadt li\u1ec7u h\u01a1n m\u1ed9t l\u1ef1c k\u00e9o t\u1eeb t\u1eeb v\u00e0 nh\u1eb9 nh\u00e0ng.  T\u1ed1c \u0111\u1ed9 k\u00e9o gi\u00e3n c\u00e0ng nhanh, v\u1eadt li\u1ec7u c\u00e0ng \u00edt c\u00f3 th\u1eddi gian \u0111\u1ec3 th\u00edch nghi v\u1edbi s\u1ef1 bi\u1ebfn d\u1ea1ng v\u00e0 do \u0111\u00f3 d\u1ec5 b\u1ecb \u0111\u1ee9t h\u01a1n.<\/p>\n<h3>\u0110i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng<\/h3>\n<p>Nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng kh\u00e1c c\u0169ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng k\u00e9o gi\u00e3n c\u1ee7a v\u1eadt li\u1ec7u.  V\u00ed d\u1ee5, m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u tr\u1edf n\u00ean gi\u00f2n h\u01a1n \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p v\u00e0 d\u1ec5 g\u00e3y v\u1ee1 h\u01a1n.<\/p>\n<h3>Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m<\/h3>\n<p>Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o \u0111\u1ed9 gi\u00e3n d\u00e0i t\u1edbi h\u1ea1n c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3.  C\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c nhau c\u00f3 th\u1ec3 cho ra k\u1ebft qu\u1ea3 kh\u00e1c nhau.<\/p>\n<h3>So s\u00e1nh \u0111\u1ed9 gi\u00e3n d\u00e0i c\u1ee7a m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn<\/h3>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>V\u1eadt li\u1ec7u<\/th>\n<th>\u0110\u1ed9 gi\u00e3n d\u00e0i t\u1edbi h\u1ea1n (\u01b0\u1edbc t\u00ednh)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Cao su<\/td>\n<td>L\u00ean \u0111\u1ebfn 700%<\/td>\n<\/tr>\n<tr>\n<td>Nh\u1ef1a Polyethylene<\/td>\n<td>100-500%<\/td>\n<\/tr>\n<tr>\n<td>Th\u00e9p<\/td>\n<td>10-30%<\/td>\n<\/tr>\n<tr>\n<td>K\u00ednh<\/td>\n<td>&lt;1%<\/td>\n<\/tr>\n<tr>\n<td>G\u1ed1m s\u1ee9<\/td>\n<td>&lt;1%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>L\u01b0u \u00fd: B\u1ea3ng tr\u00ean ch\u1ec9 mang t\u00ednh ch\u1ea5t tham kh\u1ea3o v\u00e0 c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i v\u1eadt li\u1ec7u c\u1ee5 th\u1ec3 v\u00e0 \u0111i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m.<\/p>\n<p>T\u00f3m l\u1ea1i, vi\u1ec7c x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c kho\u1ea3ng c\u00e1ch m\u1ed9t t\u1ea5m v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 k\u00e9o gi\u00e3n tr\u01b0\u1edbc khi \u0111\u1ee9t ho\u00e0n to\u00e0n l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ee9c t\u1ea1p.  Nhi\u1ec1u y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng k\u00e9o gi\u00e3n n\u00e0y, v\u00e0 kh\u00f4ng c\u00f3 m\u1ed9t con s\u1ed1 c\u1ee5 th\u1ec3 n\u00e0o c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng cho t\u1ea5t c\u1ea3 c\u00e1c tr\u01b0\u1eddng h\u1ee3p.  Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n v\u00e0 ki\u1ec3m so\u00e1t h\u00e0nh vi c\u1ee7a v\u1eadt li\u1ec7u trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c m\u1ed9t t\u1ea5m v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 k\u00e9o gi\u00e3n bao xa tr\u01b0\u1edbc khi \u0111\u1ee9t ho\u00e0n to\u00e0n l\u00e0 m\u1ed9t c\u00e2u h\u1ecfi ph\u1ee9c t\u1ea1p, ph\u1ee5 thu\u1ed9c v\u00e0o r\u1ea5t nhi\u1ec1u y\u1ebfu t\u1ed1. Kh\u00f4ng c\u00f3 m\u1ed9t con s\u1ed1 c\u1ee5 th\u1ec3 n\u00e0o c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng cho t\u1ea5t c\u1ea3 c\u00e1c tr\u01b0\u1eddng h\u1ee3p. S\u1ef1 \u0111a d\u1ea1ng v\u1ec1 v\u1eadt li\u1ec7u, k\u00edch th\u01b0\u1edbc,<\/p>\n","protected":false},"author":1,"featured_media":5014,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-54601","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/54601","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/comments?post=54601"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/54601\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/5014"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=54601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=54601"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=54601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}