| 摘要 |
<p>This invention relates to a peroxide-curable silicone rubber composition which, when cured, exhibits a reduced modulus and improved tear strength relative to prior art compositions without sacrificing other desirable properties, such as high tensile strength of the cured rubber or storage stability of the uncured rubber base. The composition comprises (A) 100 parts by weight of a diorganopolysiloxane gum; (B) 10 to 75 parts by weight a reinforcing filler; (C) a polybutylene oligomer having a number average molecular weight of 200 to 900 and having functionality selected from epoxy, alkoxyphenylene, hydroxyl, carboxyl, anhydride and fully saturated radicals; and, optionally, (D) a hydroxy-terminated diorganopolysiloxane having a degree of polymerization of 2 to 50.</p> |
