中流动抗冲聚丙烯结构与性能研究  

Study on Properties and Structure of Medium Flow Impact⁃Resistant Polypropylene

作　　者：石行波[1] 陈商涛[1] 郑丽君[1] 关健 王俊琪 杜斌[1] 李荣波[1] 王艳芳[1] SHI Xingbo;CHEN Shangtao;ZHENG Lijun;GUAN Jian;WANG Junqi;DU Bin;LI Rongbo;WANG Yanfang(Petrochemical Research Institute of PetroChina,Beijing 102206,China;Polyolefin Plant of Fushun Petrochemical Corporation,Fushun 113109,China;PetroChina Southwest Chemical Sales Branch,Chengdu 610037,China)

机构地区：[1]中国石油天然气股份有限公司石油化工研究院,北京102206 [2]中国石油天然气股份有限公司抚顺石化分公司聚烯烃厂,辽宁抚顺113014 [3]中国石油西南化工销售分公司,成都610037

出　　处：《中国塑料》2021年第4期1-4,共4页China Plastics

摘　　要：选取3种市售中流动抗冲聚丙烯产品,分析了产品的乙烯含量、橡胶相含量、橡胶相的相对分子质量和橡胶相形貌;同时对3种产品的热性能和力学性能进行了测试。结果表明,乙烯含量决定了橡胶相含量,橡胶相含量和橡胶相的相对分子质量对产品的刚韧平衡性能起到重要作用;乙烯在橡胶相中的含量达到50%以上才能起到良好的增韧作用;根据此结论可优化抗冲聚丙烯产品的结构和共聚物含量,达到最佳的刚韧平衡。In this paper,three commercial polypropylene(PP)products with the medium-flowing and impact-resistant characteristics were selected to analyze the content of ethylene and the content,molecular weight and morphology of rubber phase.The thermal and mechanical properties of these three products were also investigated.The results indicated that the ethylene content determined the rubber phase content,and the rubber phase content and molecular weight of the rubber phase played an important role in the stiffness-toughness balance performance of the PP products.A good tough-ening effect could be achieved only when the ethylene content was higher than 50 wt%in the rubber phase.According to this conclusion,the structure and copolymer content of impact-resistant PP can be optimized to achieve an optimal balance between rigidity and toughness.

关 键 词：中流动 抗冲聚丙烯 橡胶相结构 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]