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</dd> </dl> </div> </div> </div> <div class="main_right"> <div class="sitemap"><a href="/">首页</a> > <a href="/news/gsxw/">公司新闻</a> > 详细内容 > å¡‘胶玩具厂家提醒您龟裂的原因都有哪些</div> <div class="content"> <div class="news_xaingxi"><h1>塑胶玩具厂家提醒您龟裂的原因都有哪些</h1></div> <div class="news_author"> 来源åQ?a href='http://www.ktmzau.live/news/69.html'>http://www.ktmzau.live/news/69.html</a>   å‘布旉™—´åQ?018-01-17 </div> <div class="news_content"> <p><p> <span style="font-size:14px;">龟裂æ˜?b><a href="http://www.ktmzau.live/" target="_blank" style="font-weight:bold">塑胶玩具厂家</a></b>在制作塑料制品较常见的一¿Uç¼ºé™øP¼Œäº§ç”Ÿçš„主要原因是ç”׃ºŽåº”力变åŞ所致。主要有ŒD‹ä½™åº”力、外部应力和外部环境所产生的应力变形ã€?/span> </p> <p> <span style="font-size:14px;">ŒD‹ä½™åº”力主要ç”׃ºŽä»¥ä¸‹ä¸‰ç§æƒ…况åQŒå³å……å¡«˜q‡å‰©ã€è„±æ¨¡æŽ¨å‡ºå’Œé‡‘属镶嵌仉™€ æˆçš„。作为在充填˜q‡å‰©çš„情况下产生的龟裂,其解å†Ïx–¹æ³•ä¸»è¦å¯åœ¨ä»¥ä¸‹å‡ æ–šw¢å…¥æ‰‹åQ?/span> </p> <p> <span style="font-size:14px;">1、由于直‹¹‡å£åŽ‹åŠ›æŸå¤±æœ€ž®ï¼Œæ‰€ä»¥ï¼Œå¦‚果龟裂最主要产生在直‹¹‡å£é™„è¿‘åQŒåˆ™å¯è€ƒè™‘改用多点分布ç‚ÒŽµ‡å£ã€ä¾§‹¹‡å£åŠæŸ„形浇口方式ã€?/span> </p> <p> <span style="font-size:14px;">2、在保证树脂不分解、不劣化的前提下åQŒé€‚当提高树脂温度可以降低熔融¾_˜åº¦åQŒæé«˜æµåŠ¨æ€§ï¼ŒåŒæ—¶ä¹Ÿå¯ä»¥é™ä½Žæ³¨ž®„压力,以减ž®åº”力ã€?/span> </p> <p> <span style="font-size:14px;">3、一般情况下åQŒæ¨¡æ¸©è¾ƒä½Žæ—¶å®ÒŽ˜“产生应力åQŒåº”适当提高温度。但当注ž®„速度较高æ—Óž¼Œå³ä‹É模温低一些,也可减低应力的äñ”生ã€?/span> </p> <p> <span style="font-size:14px;">4、注ž®„和保压旉™—´˜q‡é•¿ä¹Ÿä¼šäº§ç”Ÿåº”力åQŒå°†å…‰™€‚当¾~©çŸ­æˆ–进行Th‹Æ¡ä¿åŽ‹åˆ‡æ¢æ•ˆæžœè¾ƒå¥½ã€?/span> </p> <p> <span style="font-size:14px;">5、非¾l“晶性树脂,如AS树脂、ABS树脂、PMMA树脂½{‰è¾ƒ¾l“晶性树脂如聚乙烯、聚甲醛½{‰å®¹æ˜“äñ”生残余应力,应予以注意ã€?/span> </p> <p> <span style="font-size:14px;">脱模推出æ—Óž¼Œç”׃ºŽè„±æ¨¡æ–œåº¦ž®ã€æ¨¡å…·åž‹èƒ¶åŠå‡¸æ¨¡¾_—ç³™åQŒä‹É推出力过大,产生应力åQŒæœ‰æ—¶ç”šè‡›_œ¨æŽ¨å‡ºæ†å‘¨å›´äñ”生白化或破裂现象。只要仔¾l†è§‚察龟裂äñ”生的位置åQŒå³å¯ç¡®å®šåŽŸå› ã€?/span> </p> <p> <span style="font-size:14px;">在注ž®„成型的同时嵌入金属件时åQŒæœ€å®ÒŽ˜“产生应力åQŒè€Œä¸”å®ÒŽ˜“在经˜q‡ä¸€ŒD‰|—¶é—´åŽæ‰äñ”生龟裂,危害极大。这主要是由于金属和树脂的热膨胀¾pÀL•°ç›¸å·®æ‚¬æ®Šäº§ç”Ÿåº”力åQŒè€Œä¸”随着旉™—´çš„推¿U»ï¼Œåº”力­‘…过逐渐劣化的树脂材料的强度而äñ”生裂¾UV€‚äؓ预防由此产生的龟裂,作äؓ¾léªŒåQŒå£åŽ?”与嵌入金属他的外径</span> </p> <p> <span style="font-size:14px;">通用型聚苯乙烯基本上不适于宜加镶嵌ä»Óž¼Œè€Œé•¶åµŒäšg对尼龙的影响最ž®ã€‚由于玻璃纤¾l´å¢žå¼ºæ ‘脂材料的热膨胀¾pÀL•°è¾ƒå°åQŒæ¯”较适合嵌入件ã€?/span> </p> <p> <span style="font-size:14px;">另外åQŒæˆåž‹å‰å¯šw‡‘属嵌件进行预热,也具有较好的效果ã€?/span> </p> <p> <span style="font-size:14px;">大家对于塑胶玩具龟裂的原因都了解清楚了吗åQŸä»Šå¤?strong><a href="http://www.ktmzau.live/" target="_blank">塑胶玩具厂家</a></strong>在这里就不多说了åQŒæœ‰éœ€è¦çš„朋友åQŒæ¬¢˜qŽæ¥ç”µå’¨è¯¢ä¸‹å•ï¼</span> </p> <p> <img src="http://www.ktmzau.live/uploads/news/20180117045315.jpg" width="500" height="400" title="塑胶玩具厂家" align="" alt="塑胶玩具厂家" /> </p></p> <div class="pagess"><div>上一æ?<a href="70.html">塑胶玩具表面光泽度低怎么解决åQŸå¡‘胶玩具厂家来教你</a></div> <div>下一æ?<a href="68.html">东莞塑胶制品厂家åQšå¡‘胶制品按原料¾l™æ€Žä¹ˆåˆ†ç±»</a></div> </div> <div class="info_key"> <span>相关标签åQ?a href='/key.aspx?k=%e5%a1%91%e8%83%b6%e7%8e%a9%e5%85%b7%e5%8e%82%e5%ae%b6'>塑胶玩具厂家</a>,<a href='/key.aspx?k=%e4%b8%9c%e8%8e%9e%e9%a5%b0%e5%93%81%e5%8e%82%e5%ae%b6'>东莞饰品厂家</a>,<a href='/key.aspx?k=%e4%b8%9c%e8%8e%9e%e5%a1%91%e8%83%b6%e5%88%b6%e5%93%81'>东莞塑胶制品</a>,</span> </div> </div> <div class="clear"></div> </div> <div class="zklist"> <div class="zklist-T"> 相关新闻</div> <div class="zklist-C"> <ul> <li> <a href="/news/103.html" title="东莞塑胶制品的保å…ÖM¸»è¦åˆ†å“ªä¸‰ç‚? 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