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</dd> </dl> </div> </div> </div> <div class="main_right"> <div class="sitemap"><a href="/">首页</a> > <a href="/news/cjwt/">常见问题</a> > 详细内容 > 影响东莞塑胶制品收羃曲的五大因?/div> <div class="content"> <div class="news_xaingxi"><h1>影响东莞塑胶制品收羃曲的五大因?/h1></div> <div class="news_author"> 来源Q?a href='http://www.071095.live/news/167.html'>http://www.071095.live/news/167.html</a>   发布旉Q?019-11-11 </div> <div class="news_content"> <p><p> 曲是塑件未按照设计的Ş状成形,却发生表面的扭曲Q塑件翘曲原因是成Ş塑g的不均匀收羃。假如整个塑件有均匀的收~率Q塑件变形就不会曲Q而仅仅会~小寸Q然而,׃分子?U维配向性、模具冷却、塑件设计、模兯计及成Ş条g{诸多因素的交互影响Q要能达C收羃或均匀收羃是一仉常复杂的工作?</p> <p> 那么影响<b><a href="http://www.071095.live/" target="_blank" style="font-weight:bold">东莞塑胶制品</a></b>收羃曲的因素是什么呢Q?</p> <p> <img src="http://www.071095.live/uploads/news/20191111113057.jpg" width="445" height="356" title="东莞塑胶制品" align="" alt="东莞塑胶制品" /> </p> <p> 1、与塑料l晶度有?</p> <p> 热塑性塑料有l晶型和无定形两U,l晶型分子链排列整齐Q稳定,紧密Q在冷却凝固Ӟ有晶核到晶粒的生成过E,无定形的塑料分子链排序杂乱无章,在冷却凝固时Q没有晶怸晶粒的生长过E,只是自由的大分子铄“冻l?</p> <p> 2、与颜料的类型有?</p> <p> 有机颜料?a href="http://www.071095.live/supply/20.html" target="_blank">东莞塑胶制品</a>成型中可能充当成核剂而促q结晶化q程Q一般来_分子l构对称的颜料,收羃影响大,比如颜料U?54Q颜料蓝15Q?Q颜料蓝15Q?Q酞菁绿7{,而无机颜料则Ҏ~性媄响小Q比如钛白粉Q群青可以忽略不计?</p> <p> 3、与颜料的Ş态有?</p> <p> 颜料的结晶状态各U各P_子有针Ӟ状Q球形等{。如果是针状或棒Ӟ长度方向Ҏ沿树脂流动方向排列,因而生收~,而无机颜料通常是球状结Ӟ球Ş哪个方向都一P也不存在方向排列的问题,所以无机颜料通常不会有收~翘曲的问题。因此结晶型塑料在注塑成型时的收~率一般比非结晶塑料要大,热固性塑料则几乎无媄响,也就是说Q收~翘曲只发生在结晶型塑料里?</p> <p> 4、与颜料的粒径有?</p> <p> 同一U颜料类型,不同的生产厂家工Z一P生的颜料粒径也不一P_径大小也会影响收羃曲Q当_径大到一定程度或到一定程度,成型收羃率很,q个不太好描qͼ也没有一个统一的标准,只能在实际应用中去试Qȝ来说Q哪怕同一个颜料的cdQ这个厂生的变形严重,也许另一个厂生的就收羃曲很轻微?</p> <p> 5、与颜料的成型温度有?</p> <p> 塑料成型Ӟ需要温度融化塑料,q个成型温度随塑料的品种Q不同的加工Ҏ而各不相同,比如Q颜料棕23Q颜料红149在加工温?20℃会明显影响HDPE塑料的收~性,温度升高反而媄响降低;而颜料黄13在HDPE中,如加工温度太低,东莞塑胶制品的收~媄响增大,所以这个也没有什么规律可循,除了按生产工艺去试Q好像也没什么其它解x案?</p></p> <div class="pagess"><div>上一?<a href="168.html">玩具定制目前市场格局</a></div> <div>下一?<a href="166.html">东莞饰品厂家深得客户信赖的原?/a></div> </div> <div class="info_key"> <span>相关标签Q?/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/177.html" title="塑胶制品公司复工后有哪些要注意的问题" rel="nofollow">塑胶制品公司复工后有哪些要注意的问题</a> <span>2020-03-27</span> </li> <li> <a href="/news/176.html" title="塑胶玩具厂家与你共同战病? 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