A fiber-reinforced rubber composition capable of providing a vulcanizate having an excellent strength and modulus and a production process thereof. This fiber-reinforced rubber composition includes fine short fibers of thermoplastic polymer having
groups buried in vulcanizable rubber. The vulcanizable rubber and the thermoplastic polymer are grafted to each other through a resol type alkylphenol formaldehyde resin precondensate or a novolak type phenol formaldehyde resin precondensate at an interface of the fiber. The ratio of the fiber to the vulcanizable rubber (A) 1 to 70 parts by weight based on 100 parts by weight of the rubber in the case of the resol type alkylphenol formaldehyde resin precondensate or (B) 1 to 100 parts by weight based on 100 parts by weight of the rubber in the case of the novolak type phenol formaldehyde resin precondensate.
一种纤维增强橡胶组合物,能够提供强度和模量极佳的
硫化胶及其生产工艺。这种纤维增强橡胶组合物包括热塑性聚合物的细短纤维,其基团埋在可
硫化橡胶中。
基团埋入可
硫化橡胶中。可
硫化橡胶和热塑性聚合物通过纤维界面上的 resol 型烷基
酚甲醛树脂预缩物或 novolak 型
苯酚甲醛树脂预缩物相互接枝。纤维与可
硫化橡胶的比例为:(A) 在使用 resol 型烷基
酚甲醛树脂预缩合物的情况下,以 100 份橡胶重量为基准,纤维与可
硫化橡胶的重量比为 1 至 70;(B) 在使用 novolak 型
苯酚甲醛树脂预缩合物的情况下,以 100 份橡胶重量为基准,纤维与可
硫化橡胶的重量比为 1 至 100。