发明名称 |
MODIFIED POLYTETRAFLUOROETHYLENE MOLDED ARTICLE AND PROCESS FOR MANUFACTURE THEREOF |
摘要 |
It is an object of the present invention to obtain a PTFE molding excellent in flexing resistance without decreasing the tensile strength and tensile elongation. The present invention is a modified polytetrafluoroethylene molded article obtained by molding a modified polytetrafluoroethylene molding powder, wherein the modified polytetrafluoroethylene molding powder is not melt-moldable, the modified polytetrafluoroethylene constituting the modified polytetrafluoroethylene molding powder contains 0.01 to 1% by mass of a perfluorovinyl ether unit represented by the formula (I):
(wherein X is a perfluoroalkyl group containing 1 to 6 carbon atoms or a perfluoroalkoxyalkyl group containing 4 to 9 carbon atoms) and the heat of crystallization thereof is 18.0 to 25.0 J/g as measured using a differential scanning colorimeter, and the modified polytetrafluoroethylene molded article has'a heat of fusion of not more than 28 J/g and a flex life of at least 200 x 10 4 cycles.
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申请公布号 |
EP1829904(A1) |
申请公布日期 |
2007.09.05 |
申请号 |
EP20050811241 |
申请日期 |
2005.11.30 |
申请人 |
DAIKIN INDUSTRIES, LTD. |
发明人 |
YANAGIGUCHI, TOMIHIKO;YANO, SHINICHI;SUKEGAWA, MASAMICHI;YUKAWA, HIROKAZU |
分类号 |
C08F214/26;B29C43/02;B29C67/04;C08J5/00 |
主分类号 |
C08F214/26 |
代理机构 |
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主权项 |
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