申请人:Shin-Etsu Chemical Co., Ltd.
公开号:EP3219762A1
公开(公告)日:2017-09-20
Provided is an addition-curable silicone rubber composition in which a flame retardant has been added to a silicone rubber composition to improve the flame retardancy and, despite this, the physical properties of the silicone rubber serving as the base are unchanged. The addition-curable silicone rubber composition comprises (A) 100 parts by mass of an alkenyl-containing organopolysiloxane having at least two silicon-atom-bonded alkenyl groups in the molecule, (B) 0.2-20 parts by mass, per 100 parts by mass of component (A), of an organohydrogenpolysiloxane having at least two silicon-atom-bonded hydrogen atoms in the molecule, (C) 5-80 parts by mass, per 100 parts by mass of the sum of components (A) and (B), of a fine reinforcing silica powder having a specific surface area, as determined by the BET method, of 50 m2/g or greater, (D) 0.001-1 part by mass of a triazole-based compound, (E) 0.001-5 parts by mass of a phosphoric ester compound, and (F) a catalytic amount of a platinum catalyst.
本发明提供了一种添加固化型硅橡胶组合物,其中在硅橡胶组合物中添加了阻燃剂,以提高阻燃性,尽管如此,作为基体的硅橡胶的物理性质保持不变。该添加固化型硅橡胶组合物包括:(A) 100 份(按重量计)分子中至少有两个硅原子键合烯基的含烯基有机聚硅氧烷;(B) 0.以每 100 份组分(A)的质量计,含有 2-20 份有机氢聚硅氧烷,其分子中至少有两个硅原子键合的氢原子;(C) 以每 100 份组分(A)和(B)的质量计,含有 5-80 份细小的强化二氧化硅粉末,其比表面积经 BET 方法测定为 50 m2/g 或以上;(D) 0.001-1份质量的三唑基化合物,(E) 0.001-5份质量的磷酸酯化合物,以及(F) 催化量的铂催化剂。