申请人:DAIKIN INDUSTRIES, LTD.
公开号:EP1865025A1
公开(公告)日:2007-12-12
The present invention provides a peroxide-vulcanizable fluorine-containing elastomer composition which is remarkably improved in fluidity and thereby exhibits improved processability, though conventional fluorine-containing elastomer compositions could be molded only by a molding process having a problem in its productivity, for instance, compression molding or transfer molding which has been used so far as a general molding process. The present invention further provides a molded article obtained by vulcanizing the composition. The present invention also provides a fluorine-containing elastomer composition in which a large amount of a filler can be blended. Specifically, the present invention relates to the fluorine-containing elastomer composition comprising a fluorine-containing elastomer (A) composed of a structural unit derived from vinylidene fluoride and/ or a structural unit of tetrafluoroethylene and a structural unit derived from at least one other monomer, and having (a) a number average molecular weight (Mn) of 30,000 to 70,000 g/mol, and (b) an iodine content of 0.3 to 1.0 % by weight and an organoperoxide vulcanizing agent (B).
本发明提供了一种可过氧化物硫化的含氟弹性体组合物,该组合物的流动性得到了显著改善,从而显示出更好的可加工性,尽管传统的含氟弹性体组合物只能通过生产率有问题的成型工艺进行成型,例如迄今为止作为一般成型工艺使用的压缩成型或传递成型。本发明进一步提供了一种通过硫化该组合物获得的模塑制品。本发明还提供了一种可掺入大量填料的含氟弹性体组合物。具体地说,本发明涉及含氟弹性体组合物,该组合物包括一种含氟弹性体 (A),该弹性体由衍生自偏氟乙烯和/或四氟乙烯的结构单元和衍生自至少一种其他单体的结构单元组成,并且具有 (a) 30,000 至 70,000 g/mol 的数均分子量 (Mn),以及 (b) 0.3 至 1.0 %(重量)的碘含量和一种有机过氧化物硫化剂 (B)。