| abstract |
The present invention is a polyolefin-based rubber composition, which contains: (A) ethylene/α-olefin/non-conjugated polyene random copolymer: 100 parts by mass; (B) represented by the following average composition formula (1) , Organopolysiloxane with 0 or 1 to 3 alkenyl groups and a degree of polymerization of 20 or more in 1 molecule: 1 to 100 parts by mass; R a SiO (4-a)/2 (1) (in the formula, R represents the same or different monovalent hydrocarbon groups, and a is a positive number from 1.95 to 2.05.); (C) Reinforcing silica with a specific surface area of 50 m 2 /g or more obtained by the BET method: relative to (A) 100 parts by mass in total of (B) components, 10-100 parts by mass; (D) particles selected from the group of specific organic resin particles, inorganic particles and silicone powder particles: 1-150 parts by mass. The polyolefin-based rubber composition of the present invention can be subjected to compression molding, steam vulcanization, and the like, and the cured surface exhibits sliding properties without deterioration in mechanical properties, and is excellent in blocking resistance. |