| abstract |
An object of the present invention is to solve the problems in the prior art, and to provide a composition constituting an EPDM rubber mold material having excellent heat aging characteristics and high-temperature tear strength. SOLUTION: (1) 100 parts by weight of EPDM having a Mooney viscosity of 20 to 30 (100 ° C.), (2) (1) 2-Mercaptobenzimidazole, and (2) Tetrakis [methylene-3 (3,5-di-t) -Butyl-4-hydroxy-phenyl) propionate] methane and (3) 4,4'-Thio-bis (3-methyl-6-t-butyl-phenol) are (5-20): (2. 5 to 10): an antioxidant formulated to be 2; (3) an oil component of 10 parts by weight or less; (4) 0.25 to 0.5 part by weight of sulfur; and (5) EPDM rubber rubber comprising 1 to 5 parts by weight of DCP and (6) 40 to 100 parts by weight of a filler or 30 to 70 parts by weight of carbon black. Material. [Selection diagram] None |