Abstract

The synergistic effect of divinylbenzene and triallyl cyanurate on the properties and structure of the thermoplastic vulcanizate prepared from a blend of polypropylene and hydrogenated styrene–butadiene–styrene triblock copolymer by vulcanization under dynamic conditions with 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane was revealed. The synergism consists in the enhancement of the strength, increase in the relative elongation, and decrease in the compression set to a greater extent then when using divinylbenzene or triallyl cyanurate separately. The synergism is caused by the increased gel fraction content and vulcanization network thickness, with preservation of the higher molecular mass of the polypropylene matrix.

中文翻译：

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聚丙烯与氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物的动态硫化共混物中三烯丙基氰尿酸酯和二乙烯基苯的协同作用

摘要

二乙烯基苯和三烯丙基氰尿酸酯对由聚丙烯和氢化苯乙烯-丁二烯-苯乙烯三嵌段共聚物在动态条件下与2,5-二甲基-2,5-di（硫化）共混制的热塑性硫化橡胶的性能和结构的协同作用揭示出叔丁基过氧）己烷。与单独使用二乙烯基苯或三烯丙基氰尿酸酯相比，增效作用在于强度的提高，相对伸长率的增加和压缩永久变形的降低。增效作用是由增加的凝胶分数含量和硫化网络厚度引起的，同时保留了较高的聚丙烯基质分子量。