| abstract |
(57) [Summary] [Object] To obtain a heat-curable silicone rubber compound having good curing properties by mixing, homogenizing and heat-treating raw materials in a short time and with a simple operation. (A) Organopolysiloxane raw rubber 100 parts by weight (B) reinforcing silica filler 5 to 100 parts by weight (C) Processing aid 0.1 to 30 parts by weight is fed to a batch-type closed mixer, a first step of mixing and homogenizing, and the mixture obtained in the first step is continuously fed to a kneading extruder, The second step of heat treatment is performed to produce a heat-cured silicone rubber compound. |