SILICONE RUBBER-BASED CURABLE COMPOSITION

摘要

A silicone rubber-based curable composition includes vinyl siloxane, hydrogen siloxane and silica particles, where the content of the silica particles is 26.0 wt % or more and less than 40.0 wt %, and when cured, it can form a silicone rubber exhibiting a physical property of a JIS K6253 (2006) type A durometer hardness of 40.0 mN or more. Further a method for manufacturing a silicone rubber-based curable composition includes a step of obtaining a kneaded product by kneading vinyl siloxane, hydrogen siloxane, silica particles, a silane coupling agent and a catalyst, where the content of the silica particles in the kneaded product is in the range of 40 to 84 parts by weight relative to 100 parts by weight as the total amount of the vinyl siloxane and the hydrogen siloxane.

主权项

1. A silicone rubber-based curable composition, comprising:
vinyl group-containing organopolysiloxane (A); organohydrogen polysiloxane (B); and silica particles (C), wherein the content of the silica particles (C) is 26.0 wt % or more and less than 40.0 wt %, and the composition when cured is capable of forming a silicone rubber exhibiting a JIS K6253 (2006) type A durometer hardness of 40.0 mN or more.