摘要
考察了石蜡油对三元乙丙橡胶(EPDM)硫化特性及动态性能的影响。无转子硫化仪的测试结果表明,充油EPDM较未充油者的硫化特性均有一些变化,其中最大和最小转矩以及门尼黏度不同程度地减小,而焦烧时间和正硫化时间有所延长;EPDM热硫化阶段是一级反应过程,硫化反应的活化能随着体系中石蜡油用量的增加而略有减小。采用橡胶加工分析仪对EPDM混炼胶进行的频率扫描结果表明,随着石蜡油用量的增加,充油EPDM呈现出储能模量和损耗模量减小而损耗因子增大的规律。
Effects of paraffinic oil on peroxide curing and dynamic properties of ethylene-propylenediene monomer （EPDM） were investigated. The resuits measured by moving die rheometer showed that minimum torque, maximum torque and Mooney viscosity all reduced with increasing amounts of oil, while scorch time and cure time extended. The reaction in thermal curing stage of EPDM was of first order. Activation energy of thermal cure of EPDM decreased slightly with the increase of paraffinic oil. The results of frequency scanning of EPDM compound measured by rubber, process analyzer indicated that modulus and loss modulus both decreased, while loss factor increased with inhancing content of paraffin oil.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
2015年第4期318-321,共4页
China Synthetic Rubber Industry
关键词
三元乙丙橡胶
石蜡油
硫化特性
硫化动力学参数
动态性能
ethylene-propylene-diene monomer
paraffinic oil
cure characteristics
cure kineticsparameter
dynamic property
