申请人:Zeon Corporation
公开号:EP1550694A1
公开(公告)日:2005-07-06
An acrylic rubber composition comprising (A) 100 weight parts of an acrylic rubber comprising 80 - 99.9 weight % of units of a monomer selected from acrylic acid ester monomers and methacrylic acid ester monomers, and 0.1 - 20 weight % of units of an α,β-ethylenically unsaturated carboxylic acid monomer, (B) 5 - 200 weight parts of synthetic silica, and (C) 0.05 - 20 weight parts of a crosslinking agent. The acrylic rubber composition preferably further comprises 5 - 200 weight parts of aluminum silicate containing at least 5 weight % of Al2O3 wherein the total amount of Al2O3 and SiO2 is at least 60 weight %. The rubber composition has good storage stability and gives a crosslinked object having good heat aging resistance, reduced compression set and good mechanical properties.
一种丙烯酸橡胶组合物,包括(A)100 重量份的丙烯酸橡胶,其中 80 - 99.9 重量份的单体单元选自丙烯酸酯单体和甲基丙烯酸酯单体,以及 0.1 - 20 重量份的α,β-乙烯基不饱和羧酸单体单元,(B)5 - 200 重量份的合成白炭黑,以及(C)0.05 - 20 重量份的交联剂。丙烯酸橡胶组合物最好进一步包含 5 - 200 重量份的硅酸铝,其中至少含有 5 重量份的 Al2O3,Al2O3 和 SiO2 的总量至少为 60 重量份。该橡胶组合物具有良好的贮存稳定性,交联物具有良好的耐热老化性、较低的压缩永久变形和良好的机械性能。