| abstract |
(57) [Abstract] [Problem] Various base materials by combination with a specific primer, In particular, the present invention provides a fluorosilicone rubber composition having excellent cured adhesiveness to metal and a method for adhering the same. SOLUTION: (A) Average unit formula: R a SiO (4-a) / 2 (wherein R is a substituted or unsubstituted monovalent hydrocarbon group, 20 to 50 mol% of which is a 3,3,3-trifluoropropyl group. A is 1 An organopolysiloxane having a degree of polymerization of 1,000 or more, which is a number of 0.95 to 2.05), (B) a fine powder silica filler, (C) Silicon atom-bonded hydrogen atom content is 0.8% by weight The above is an organohydrogenpolysiloxane, (D) A fluorosilicone rubber composition comprising an organic peroxide, and the composition are brought into contact with a substrate treated with a primer composition containing an alkenyl group-containing organoalkoxysilane as a main component, and then the fluorosilicone rubber composition A method for adhering a fluorosilicone rubber to a base material, which comprises heating and curing. |