Provided are a blended rubber and a blended rubber composition that give a vulcanizate superior in abrasion resistance and ozone resistance, and a vulcanizate prepared by vulcanizing the blended rubber composition. A blended rubber, comprising 30 to 93 mass % of a chloroprene rubber, 5 to 50 mass % of a soft polyvinyl chloride, and 2 to 20 mass % of an acrylonitrile-butadiene rubber. The polyvinyl chloride resin used preferably has a polymerization degree of 300 to 3000 and the acrylonitrile-butadiene rubber preferably has an acrylonitrile content of 18 to 50 mass %.
本发明提供了一种混合橡胶和一种混合橡胶组合物,其
硫化胶的耐磨性和耐
臭氧性更佳,还提供了一种通过
硫化该混合橡胶组合物制备的
硫化胶。一种混合橡胶,由 30 至 93 质量百分比的
氯丁二烯橡胶、5 至 50 质量百分比的软质聚
氯乙烯和 2 至 20 质量百分比的
丙烯腈-
丁二烯橡胶组成。所使用的聚
氯乙烯树脂的聚合度最好为 300 至 3000,
丙烯腈-
丁二烯橡胶的
丙烯腈含量最好为 18 至 50%。