Silicone rubber composition for thermally conductive silicone developing rubber member and thermally conductive silicone developing rubber member

摘要

A silicone rubber composition for thermally conductive silicone-rubber development members which comprises (A) 100 parts by mass of an organopolysiloxane having, in the molecule, at least two alkenyl groups each bonded to a silicon atom, (B) 40-400 parts by mass of a thermally conductive powder that has an average primary-particle diameter of 30 m or smaller and a thermal conductivity of 10 W/m·K or greater, (C) 1-50 parts by mass of carbon black, and (D) a hardener in an amount capable of curing the component (A) and which gives a cured silicone rubber having a thermal conductivity of 0.28 W/m·K or greater. With the silicone rubber composition for thermally conductive silicone-rubber development members, it is possible to provide a thermally conductive silicone-rubber development member (roll, belt, etc.) which comprises a silicone rubber layer formed by curing the silicone rubber composition and which is excellent in terms of image characteristics and has the feature of high thermal conductivity.