?!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 什么是纯聚四氟乙密封件?-镇江泰氟龙塑胶有限公I?/title> <head> <style type="text/css"> /*中间内容开?/ #bodycon {width:986px;margin: 0 auto;} #bodycon #left {float: left;width: 230px;} #bodycon #center {float:left;width: 756px;background-image:url(http://www.sz-jxgj.com/memberpic/030157/picture/20134/fengge/2013041353268461.jpg);} #bodycon #right {float:left;width: 0px;} /*中间内容结束*/ /*详细内容开?/ #bodycontent {width:740px;margin: 0 auto;line-height:180%;text-align:center;} /*详细内容结束*/ </style> <style type="text/css"> #content1{ width: 710px; padding: 5px 15px 0px 15px; height: 555px; overflow: hidden; } #content1 p{ line-height:20px;} #rtmain{ width: 692px; line-height: 20px; padding-left:30px; padding-right: 20px; margin-bottom: 5px; overflow: hidden; } #rtmain dl{ display: block; float: left; width: 162px; height: 152px; margin: 10px 11px 10px 0px; } * html #rtmain dl{margin: 10px 11px 10px 0px;} #rtmain dt{ display: block; } #rtmain dt a img{border: 1px solid #ccc;} #rtmain dt a:hover img{border: 1px solid #b60108;} #rtmain dd{ display: block; height: 30px; line-height: 30px; text-align: left; } #pro rtmain a{ color: #2d8dda; } #pro rtmain a:hover{ color:#FF0000;} </style> <link rel="stylesheet" type="text/css" href="/css/css.css" /> <script type="text/javascript" src="/js/jquery.min.js"></script> <script type="text/javascript" src="/js/pintuer.js"></script> <script src="/js/animate.min.js"></script> <script src="/js/jquery.flexslider-min.js"></script> <script src="/js/owl.carousel.js"></script> <script src="/js/main.js"></script> <script src="/js/index.js"></script> <script type="text/javascript">var king_page='/page/';</script> <script src="/page/system/inc/fun.js" type="text/javascript"></script> <meta http-equiv="Cache-Control" content="no-siteapp" /> <meta http-equiv="Cache-Control" content="no-transform" /> <script> (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https'){ bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else{ bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })(); </script> <script> (function(){ var canonicalURL, curProtocol; //Get the <link> tag var x=document.getElementsByTagName("link"); //Find the last canonical URL if(x.length > 0){ for (i=0;i<x.length;i++){ if(x[i].rel.toLowerCase() == 'canonical' && x[i].href){ canonicalURL=x[i].href; } } } //Get protocol if (!canonicalURL){ curProtocol = window.location.protocol.split(':')[0]; } else{ curProtocol = canonicalURL.split(':')[0]; } //Get current URL if the canonical URL does not exist if (!canonicalURL) canonicalURL = window.location.href; //Assign script content. Replace current URL with the canonical URL !function(){var e=/([http|https]:\/\/[a-zA-Z0-9\_\.]+\.baidu\.com)/gi,r=canonicalURL,t=document.referrer;if(!e.test(r)){var n=(String(curProtocol).toLowerCase() === 'https')?"https://sp0.baidu.com/9_Q4simg2RQJ8t7jm9iCKT-xh_/s.gif":"//api.share.baidu.com/s.gif";t?(n+="?r="+encodeURIComponent(document.referrer),r&&(n+="&l="+r)):r&&(n+="?l="+r);var i=new Image;i.src=n}}(window);})(); </script> </head> <body id="ev7lbi" > <div style='display:none'><q id='DlOKyt'><h1><a href="http://www.bjqyxx.com/" title="内容标题9">内容标题9</a></h1></q><tt id='DlOKyt'><dd id='DlOKyt'><noscript id='DlOKyt'><dl id='DlOKyt'><i id='DlOKyt'></i><dd id='DlOKyt'></dd></dl></noscript></dd></tt><tr id='DlOKyt'></tr><td id='DlOKyt'></td><q id='DlOKyt'></q><dd id='DlOKyt'></dd><div id='DlOKyt'><button id='DlOKyt'><tfoot id='DlOKyt'><i id='DlOKyt'><dl id='DlOKyt'><i id='DlOKyt'><strike id='DlOKyt'><dt id='DlOKyt'></dt></strike></i></dl></i><pre id='DlOKyt'></pre></tfoot><u 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<p>1)摩擦系数低。纯聚四氟乙烯的摩擦系╰是目前固体中最小的,仅?.02?.10,因此摩擦阻动K很?)具有高度的化学稳定性。它可以耐各种酸碱腐蚀。通常被称?ldquo;塑料?rdquo;?/p> <p>3)耐温性能也较好,一般在80?00℃的条件下可以正常工作;</p> <p>4)吸湿系数小,吸水率为0.01%?/p> <p>纯聚四氟乙烯密封件有如下缺点?/p> <p>1)线胀系数较大,纯聚四氟乙烯在20?0℃时线胀系数α=1×10-4?1;在100?00℃时?alpha;=2×10-4?1?/p> <p>2)导热性较差。热导率λ=0.47W/(m·K)?/p> <p>3)不仅具有冷流性,而且在高温、高压下,也容易产生塑性变形;</p> <p>4)机械强度差,硬度低,弹性小? 为了弥补纯聚四氟乙烯的上述不足,而发挥其优点,实际应用时经常加入一些充填材料,以改善它的性能。常用的充填材料及其ơ作用是:充填石墨、二硫化钼可提高 导热性能和耐磨性能;充填青铜、钼、银粉等可提高机械强度和导热性;充填玻璃纤维、石棉、陶瓷等可增加耐磨性和改善抗压能力,降低收缩率。总之,填充聚?氟乙烯既保持了原来的优良性能,又使其强、硬度、弹性等得到改善?/p></div> </div> </div> </div> </div> </div> <footer> <div class="layout"> <div class="foot-bg"> <div class="container"> <div class="line"> <div class="xl12 foot-logo"> <img src="/images/f_logo.png"/> </div> <div class="xl12 foot-right"> <div class="foot-nav"> <ul> <li><a href='/'>首页</a></li> <li>|<a href='/ev7lbi/about.html/'>关于我们</a></li> <li>|<a href='/ev7lbi/products/'>产品中心</a></li> <li>|<a href='/ev7lbi/gdsb.html/'>高端设备</a></li> <li>|<a 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