申请人:SHIN-ETSU CHEMICAL CO., LTD.
公开号:EP0399554A2
公开(公告)日:1990-11-28
A foamable silicone composition comprising (A) a vinyl-free organopolysiloxane RaSiO(4-a)/2 wherein R is a monovalent hydrocarbon or hydroxyl group and a is 1.95 to 2.05, (B) a finely divided silica filler, (C) an azodicarbonamide foaming agent, and (D) a diacyl peroxide foams and cures into a silicone sponge having a uniform and dense cellular structure and toner releasability. The silicon sponge is suitable to form a fixing roll for use in electrographic copying machines.
一种可发泡有机硅组合物,包括(A)不含乙烯基的有机聚硅氧烷 RaSiO(4-a)/2,其中 R 为单价烃基或羟基,a 为 1.95 至 2.05;(B)细粒状二氧化硅填料;(C)偶氮二甲酰胺发泡剂;以及(D)过氧化二酰发泡并固化成具有均匀致密的蜂窝结构和墨粉释放性的硅海绵。这种硅海绵适用于形成定影辊,供电子照相复印机使用。