| 摘要 |
A novel rubber molding composition suitable for electrical appliances, particularly for a PST, is obtained by improving the resistance to tearing of a silicone-modified EPDM inherently resistant to cold, weather conditions, and heat. A PST produced from this composition is also provided. A rubber molding composition for electrical. Appliances characterized by comprising (1) 100 parts by weight of a silicone-modified ethylene-propylene-diene terpolymer and (2) from 0.5 to 2 parts by weight of granular polytetrafluoroethylene and an amount of molybdenum disulfide effective to uniformly mix the granular polytetrafluoroethylene with the terpolymer; a rubber molding composition for electrical appliances characterized by comprising (1) 100 parts by weight of a silicone-modified ethylene-propylene-diene terpolymer, (2) from 0.5 to 2 parts by weight of granular polytetrafluoroethylene and an amount of molybdenum disulfide effective to uniformly mix the granular polytetrafluoroethylene with the terpolymer, and (3) 4 to 20 parts by weight of a 1,4-hexadiene type ethylene-propylene-diene terpolymer possessing a Mooney viscosity, [ML(1+4) 121 DEG C], in the range of from 60 to 80; electrical appliances such as, for example, PST, formed of the rubber molding composition mentioned above are provided. |
