Bonding method and laminate of fluorosilicone rubber and dimethylsilicone rubber

摘要

When a fluorosilicone rubber composition and a dimethylsilicone rubber composition are bonded through co-vulcanization, either one or both of the silicone rubber compositions contains untreated dry silica having a BET specific surface area of at least 250 m²/g as a reinforcing filler, and at least one of the silicone rubber compositions contains an adhesion promoter. A molded fluorosilicone/dimethylsilicone rubber laminate is improved in interfacial adhesion even when the pressure of molding accompanied with press vulcanization, steam vulcanization or hot air vulcanization is low.