三元乙丙橡胶防水卷材耐热氧老化性能的研究  

Study on Thermal Oxidative Aging Resistance of EPDM Waterproof Membranes

作　　者：彭建杰 PENG Jianjie(Henan Technical College of Construction,Zhengzhou 450000,China)

机构地区：[1]河南建筑职业技术学院,河南郑州450000

出　　处：《橡胶科技》2024年第7期387-391,共5页Rubber Science and Technology

基　　金：河南省科技攻关项目(242102210040);河南建筑职业技术学院校级项目(JYJKY2204)。

摘　　要：研究三元乙丙橡胶(EPDM)防水卷材的耐热氧老化性能。结果表明:经过热氧老化,EPDM硫化胶的硬度、拉伸强度、交联密度总体呈增大趋势;过氧化物硫化体系硫化的胶料的老化因数都大于1,且随着老化时间的延长,老化因数变化很小;半有效硫黄硫化体系硫化的EPDM胶料的接触角随老化时间延长先增大后减小,过氧化物硫化体系硫化的EPDM胶料的接触角随老化时间延长先增大后减小然后再增大。The thermal oxidative aging resistance of ethylene-propylene-diene monomer(EPDM)waterproofing membranes was studied.The results indicated that after thermal oxygen aging,the hardness,tensile strength and crosslinking density of EPDM vulcanizates generally increased.The aging coefficients of vulcanizates with peroxide vulcanization system were all greater than 1,and with the extension of aging time,the aging coefficient changed very little.The contact angle of EPDM vulcanizates with semi effective sulfur vulcanization system increased first and then decreased with aging time,while the contact angle of EPDM vulcanizates with peroxide vulcanization system increased first,then decreased,and then increased again with aging time.

关 键 词：三元乙丙橡胶 防水卷材 耐热氧老化性能 

分 类 号：TQ336.42[化学工程—橡胶工业]