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11. 发明授权

US5684088A Polyphenylene sulfide resin compositions and process for preparation of same 失效
标题翻译：聚苯硫醚树脂组合物及其制备方法
公开(公告)号：US5684088A
公开(公告)日：1997-11-04
申请号：US412592
申请日：1995-03-29
申请人： Tsuyoshi Miyamori , Yoshihisa Yamamoto , Masami Kato , Masaji Komori , Tetsuo Shimizu
发明人： Tsuyoshi Miyamori , Yoshihisa Yamamoto , Masami Kato , Masaji Komori , Tetsuo Shimizu
IPC分类号： C08L27/18 , C08L81/02 , C08G63/48 , C08L81/00
CPC分类号： C08L81/02 , C08L27/18 , Y10S525/902
摘要： The present invention relates to a PPS resin composition comprising a matrix of the PPS which is filled with a PTFE powder baked at a temperature not less than a melting point thereof and having a number-average molecular weight of not less than 1.5 million or PTFE fine particles having an average particle size of 0.05 to 1 .mu.m and comprising a fibrillating core portion of a high molecular weight PTFE with a number-average molecular weight of not less than 1.5 million and a non-fibrillating shell portion of a low molecular weight PTFE so that a content thereof is 40 to 80% by weight in the composition, and also relates to a process for preparing said PPS resin composition, which is characterized in that melting and kneading are carried out at a temperature from a temperature of not less than a melting point of PPS to a temperature of not more lower than a melting point of a high molecular weight PTFE. The polyphenylene sulfide resin composition of the present invention presents sliding properties such as excellent friction and wear resistance which sliding materials mainly containing usual polytetrafluoroethylene have as well as properties of polyphenylene sulfide such as injection moldability and high mechanical properties.
摘要翻译：本发明涉及一种PPS树脂组合物，其包含PPS基体，其填充有在不低于其熔点的温度下焙烧的数均分子量不小于150万的PTFE粉末或PTFE细粉平均粒径为0.05-1μm的颗粒，其包含数均分子量不小于150万的高分子量PTFE的原纤化核心部分和低分子量PTFE的非原纤化壳部分使其含量在组合物中为40〜80重量％，并且还涉及制备所述PPS树脂组合物的方法，其特征在于熔融和捏合在不低于 PPS的熔点至不高于高分子量PTFE的熔点的温度。本发明的聚苯硫醚树脂组合物具有优异的摩擦和耐磨性的滑动性能，主要含有通常的聚四氟乙烯的滑动材料以及聚苯硫醚的性能如注射成型性和高机械性能。

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