摘要
采用干法充油工艺,对用负载钛体系催化异戊二烯本体沉淀聚合得到的高门尼粘度反式 1,4 聚异戊二烯(TPI)的充油工艺性能及充油橡胶的性能进行了研究。结果表明,随着充油量的增加,充油生胶的可塑性增大,混炼行为得以改善,但高填充油份数的生胶放置中有喷油现象;充油生胶的屈服强度、拉伸强度、拉断伸长率、定伸应力均下降;充油硫化胶的拉伸强度、拉断伸长率、100%定伸应力及回弹值均下降,撕裂强度在充油量为37 5份时出现极大值,硬度先增大到极大值后又略有减小,磨耗量增大,抗湿滑性提高。综合考虑,高门尼粘度TPI充油量以37 5份左右为宜。
The oil-extended processing properties and the mechanical properties of the oil-extended rubber of high Mooney viscosity trans-1,4-polyisoprene with supported titanium catalyst system were studied. The results showed that with the increasing of the oil loading, the plasticity of the oil-extended rubber increased, the yield and tensile strength, elongation at break and modulus decreased.The mixing behavior was improved , but the oil blooming was found when the oil content exceeded 45 phr. The tensile strength, elongation at break, modulus at 100% elongation and resilience of oil-extended vulcanizates all decreased, and the abrasion loss increased with the increasing of the oil loading. There was a peak value at 37.5 phr of oil loading for their tear strength. The hardness of the oil-extended vulcanizates increased firstly with the increasing of the oil loading, then decreased. The wet skid resistance increased. It was suitable in the oil loading of about 37.5 phr.
出处
《特种橡胶制品》
2005年第1期5-8,共4页
Special Purpose Rubber Products
基金
国家"863"计划新材料领域资助项目(863-715-007-0040)。
