采用β成核动态硫化PP/EPDM共混物增韧聚丙烯  

Toughening of Polypropylene with β Nucleated Thermoplastic Vulcanizate Based on PP/EPDM Blends

作　　者：王维康[1] 李洁[1] 胡娟[1] 杨伟[1] 谢邦互[1] 杨鸣波[1] 

机构地区：[1]四川大学高分子科学与工程学院,高分子材料工程国家重点实验室,四川成都610065

出　　处：《高分子材料科学与工程》2011年第2期159-162,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(20734005);教育部新世纪优秀人才支持计划(NCET-08-0382)资助

摘　　要：采用β成核的动态硫化iPP/EPDM共混物即热塑性硫化胶(TPV)改性聚丙烯,并与通用增韧剂聚烯烃弹性体(POE)、三元乙丙橡胶(EPDM)增韧聚丙烯进行比较,考察了增韧体系的力学性能、热性能和相形态。结果表明,随增韧剂含量的增加,增韧体系的拉伸屈服强度和弯曲模量均有所下降,而冲击强度提高。TPV改性体系的强度、模量和维卡耐热温度较高,而冲击强度与EPDM改性体系相近,表现出了良好的综合性能。β-nucleated thermoplastic vulcanizate（TPV） based on polypropylene（PP）/ ethylene-propylene diene rubber（EPDM） blends was used to modify PP,with a comparison with general toughening agents,polyolefin elastomer（POE） and EPDM.The mechanical properties,thermal properties and phase morphology of the toughed materials were investigated.The results showed that the yield strength and flexural modulus decreased with the increasing content of elastomers,while the impact strength increased.PP/TPV blends exhibited higher strength,modulus and Vicat softening point,while the impact strength was similar to PP/EPDM.The TPV toughened system showed very good comprehensive performances.

关 键 词：聚丙烯 聚烯烃弹性体 三元乙丙橡胶 热塑性硫化胶 增韧改性 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]