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    • 3. 发明申请
    • POLYPHENYLENE SULFIDE RESIN COMPOSITION AND PROCESS FOR PRODUCING THE SAME
    • 聚苯乙烯树脂组合物及其生产方法
    • WO1994010246A1
    • 1994-05-11
    • PCT/JP1993001585
    • 1993-11-01
    • DAIKIN INDUSTRIES, LTD.MIYAMORI, TsuyoshiYAMAMOTO, YoshihisaKATO, MasamiKOMORI, MasajiSHIMIZU, Tetsuo
    • DAIKIN INDUSTRIES, LTD.
    • C08L81/02
    • C08L81/02C08L27/18C08L2666/04
    • A polyphenylene sulfide resin composition having the characteristics of polyphenylene sulfide (PPS), such as injection moldability and mechanical strength, and excellent sliding characteristics which ordinary sliding material based on polytetrafluoroethylene (PTFE) has, such as friction and abrasion resistance. The composition comprises PPS as the matrix and fine PTFE particles having a mean particle diameter of 0.05-1 mu m and being composed of a shell comprising a low-molecular PTFE incapable of fibrillation and a core comprising either a PTFE powder prepared by firing PTFE at above the melting point thereof and having the number-average molecular weight of at least 1.5 million and the mean particle diameter of 2-800 mu m or a high-molecular PTFE capable of fibrillation and having the number-average molecular weight of at least 1.5 million, said fine PTFE particles being filled in the PPS matrix in the content of 40-80 wt.%. The production process comprises melt milling the PPS and the PTFE particles above the melting point of the PPS but below the melting point of the PTFE.
    • 具有聚苯硫醚(PPS)特性的聚苯硫醚树脂组合物,例如注射成型性和机械强度,以及具有优异的滑动特性,普通的基于聚四氟乙烯(PTFE)的滑动材料具有摩擦和耐磨性。 该组合物包含PPS作为基质和平均粒径为0.05-1μm的细PTFE颗粒,并且由包含不能起纤化的低分子PTFE的壳组成,并且包含通过在PTFE上焙烧PTFE制备的PTFE粉末 高于其熔点,数均分子量至少为150万,平均粒径为2-800μm,或能够起纤化的高分子PTFE,数均分子量至少为1.5 百万分之一,所述细PTFE颗粒以40-80重量%的含量填充在PPS基质中。 生产过程包括将PPS和PTFE颗粒熔融在PPS的熔点之上,但低于PTFE的熔点。