{"id":44548,"date":"2023-04-25T14:43:59","date_gmt":"2023-04-25T19:43:59","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-the-best-piezoelectric-material\/"},"modified":"2025-01-21T07:29:11","modified_gmt":"2025-01-21T12:29:11","slug":"what-is-the-best-piezoelectric-material","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/what-is-the-best-piezoelectric-material\/","title":{"rendered":"V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n t\u1ed1t nh\u1ea5t: L\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u?"},"content":{"rendered":"<p>V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng, t\u1eeb c\u1ea3m bi\u1ebfn v\u00e0 thi\u1ebft b\u1ecb truy\u1ec1n \u0111\u1ed9ng \u0111\u1ebfn thu n\u0103ng l\u01b0\u1ee3ng v\u00e0 thi\u1ebft b\u1ecb y t\u1ebf.  Vi\u1ec7c x\u00e1c \u0111\u1ecbnh &quot;v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n t\u1ed1t nh\u1ea5t&quot; ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a t\u1eebng \u1ee9ng d\u1ee5ng. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd ph\u00e2n t\u00edch c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n ph\u1ed5 bi\u1ebfn, so s\u00e1nh \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ch\u00fang v\u00e0 \u0111\u01b0a ra h\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p cho t\u1eebng tr\u01b0\u1eddng h\u1ee3p.<\/p>\n<h3>G\u1ed1m \u00e1p \u0111i\u1ec7n (Piezoceramics)<\/h3>\n<p>G\u1ed1m \u00e1p \u0111i\u1ec7n, nh\u01b0 PZT (ch\u00ec zirconate titanate), l\u00e0 lo\u1ea1i v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t nh\u1edd h\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n cao, gi\u00e1 th\u00e0nh t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p v\u00e0 d\u1ec5 d\u00e0ng ch\u1ebf t\u1ea1o th\u00e0nh nhi\u1ec1u h\u00ecnh d\u1ea1ng kh\u00e1c nhau.  Tuy nhi\u00ean, g\u1ed1m \u00e1p \u0111i\u1ec7n c\u00f3 \u0111\u1ed9 gi\u00f2n cao v\u00e0 ch\u1ee9a ch\u00ec, g\u00e2y ra m\u1ed9t s\u1ed1 lo ng\u1ea1i v\u1ec1 m\u00f4i tr\u01b0\u1eddng.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>\u0110\u1eb7c t\u00ednh<\/th>\n<th>\u01afu \u0111i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>H\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n<\/td>\n<td>Cao<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Gi\u00e1 th\u00e0nh<\/td>\n<td>Th\u1ea5p<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 b\u1ec1n<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>Gi\u00f2n<\/td>\n<\/tr>\n<tr>\n<td>Th\u00e0nh ph\u1ea7n<\/td>\n<td><\/td>\n<td>Ch\u1ee9a ch\u00ec<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n polyme (Piezopolymers)<\/h3>\n<p>Polyvinylidene fluoride (PVDF) l\u00e0 \u0111\u1ea1i di\u1ec7n ti\u00eau bi\u1ec3u c\u1ee7a nh\u00f3m v\u1eadt li\u1ec7u n\u00e0y.  PVDF c\u00f3 t\u00ednh linh ho\u1ea1t cao, nh\u1eb9 v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu va \u0111\u1eadp t\u1ed1t h\u01a1n g\u1ed1m. Tuy nhi\u00ean, h\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n c\u1ee7a PVDF th\u1ea5p h\u01a1n so v\u1edbi g\u1ed1m.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>\u0110\u1eb7c t\u00ednh<\/th>\n<th>\u01afu \u0111i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>H\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n<\/td>\n<td>Th\u1ea5p<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Gi\u00e1 th\u00e0nh<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 b\u1ec1n<\/td>\n<td>Cao, linh ho\u1ea1t<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Th\u00e0nh ph\u1ea7n<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n composite (Piezocomposites)<\/h3>\n<p>V\u1eadt li\u1ec7u composite k\u1ebft h\u1ee3p g\u1ed1m \u00e1p \u0111i\u1ec7n v\u1edbi polymer \u0111\u1ec3 t\u1eadn d\u1ee5ng \u01b0u \u0111i\u1ec3m c\u1ee7a c\u1ea3 hai lo\u1ea1i. Ch\u00fang th\u01b0\u1eddng c\u00f3 \u0111\u1ed9 nh\u1ea1y cao h\u01a1n g\u1ed1m v\u00e0 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc t\u1ed1t h\u01a1n.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>\u0110\u1eb7c t\u00ednh<\/th>\n<th>\u01afu \u0111i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>H\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n<\/td>\n<td>Cao<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Gi\u00e1 th\u00e0nh<\/td>\n<td>Cao<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 b\u1ec1n<\/td>\n<td>Cao<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Th\u00e0nh ph\u1ea7n<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Tinh th\u1ec3 \u00e1p \u0111i\u1ec7n (Piezocrystals)<\/h3>\n<p>Quartz l\u00e0 m\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh c\u1ee7a tinh th\u1ec3 \u00e1p \u0111i\u1ec7n. Ch\u00fang c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cao v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao, v\u00ed d\u1ee5 nh\u01b0 trong \u0111\u1ed3ng h\u1ed3. Tuy nhi\u00ean, h\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n c\u1ee7a quartz th\u1ea5p.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>\u0110\u1eb7c t\u00ednh<\/th>\n<th>\u01afu \u0111i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>H\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n<\/td>\n<td>Th\u1ea5p<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Gi\u00e1 th\u00e0nh<\/td>\n<td>Cao<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 b\u1ec1n<\/td>\n<td>Cao<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Th\u00e0nh ph\u1ea7n<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n<\/h3>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. V\u00ed d\u1ee5, trong c\u00e1c \u1ee9ng d\u1ee5ng si\u00eau \u00e2m, n\u1ebfu c\u1ea7n m\u1ed9t v\u1eadt li\u1ec7u c\u00f3 h\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n cao v\u00e0 gi\u00e1 th\u00e0nh h\u1ee3p l\u00fd, g\u1ed1m PZT c\u00f3 th\u1ec3 l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t.  Trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 linh ho\u1ea1t cao, PVDF l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p.  \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u1ed5n \u0111\u1ecbnh cao, tinh th\u1ec3 quartz l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t.<\/p>\n<p>T\u00f3m l\u1ea1i, kh\u00f4ng c\u00f3 &quot;v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n t\u1ed1t nh\u1ea5t&quot;  m\u00e0 ch\u1ec9 c\u00f3 v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p nh\u1ea5t cho t\u1eebng \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3.  Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea7n d\u1ef1a tr\u00ean s\u1ef1 c\u00e2n nh\u1eafc gi\u1eefa c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 h\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n, gi\u00e1 th\u00e0nh, \u0111\u1ed9 b\u1ec1n, t\u00ednh linh ho\u1ea1t v\u00e0 c\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u00e1c.  Hi\u1ec3u r\u00f5 \u0111\u1eb7c t\u00ednh c\u1ee7a t\u1eebng lo\u1ea1i v\u1eadt li\u1ec7u s\u1ebd gi\u00fap \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh t\u1ed1i \u01b0u cho thi\u1ebft k\u1ebf v\u00e0 \u1ee9ng d\u1ee5ng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng, t\u1eeb c\u1ea3m bi\u1ebfn v\u00e0 thi\u1ebft b\u1ecb truy\u1ec1n \u0111\u1ed9ng \u0111\u1ebfn thu n\u0103ng l\u01b0\u1ee3ng v\u00e0 thi\u1ebft b\u1ecb y t\u1ebf. Vi\u1ec7c x\u00e1c \u0111\u1ecbnh &quot;v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n t\u1ed1t nh\u1ea5t&quot; ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a t\u1eebng \u1ee9ng d\u1ee5ng. B\u00e0i vi\u1ebft n\u00e0y<\/p>\n","protected":false},"author":1,"featured_media":23771,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-44548","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\/44548","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=44548"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/44548\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/23771"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=44548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=44548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=44548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}