高抗冲中熔体流动速率聚丙烯的结构与性能  

Structure and properties of medium MFR ICP

作　　者：胡廷芳[1] 杨通 冉崇文[1] Hu Tingfang;Yang Tong;Ran Chongwen(Research Institute of Dushanzi Petrochemical Co.,Karamay 833699,China;China University of Petroleum,Beijing 102249,China)

机构地区：[1]中国石油天然气股份有限公司独山子石化分公司研究院,新疆维吾尔自治区克拉玛依市833699 [2]中国石油大学化工学院,北京市102249

出　　处：《合成树脂及塑料》2018年第4期67-69,74,共4页China Synthetic Resin and Plastics

摘　　要：分析了市场上4个典型高抗冲中熔体流动速率聚丙烯的结构与性能,并研究了其力学性能。结果表明:试样1的简支梁缺口冲击强度为53 kJ/m^2,弯曲模量达到933 MPa,刚韧平衡性最好;试样2与试样3的韧性较差;试样4的乙丙橡胶相含量最高,导致其熔融和结晶温度最低,低温区的玻璃化转变温度最低,聚丙烯基体相和橡胶相粒子的界面黏结力最强等,使试样4的冲击强度最高,但弯曲模量不足,需要维持其高韧性的同时改善刚性。The structure and mechanical properties of four typical high impact and medium melt flow rate(MFR)polypropylene(ICP)in the market were analyzed.The results show that the Charpy notched impact strength and flexural modulus of sample 1 are 53 kJ/m2 and 933 MPa respectively,representing the optimal balance between rigidity and toughness.Sample 2 and 3 have the poor toughness.The highest content of rubber phase in sample 4 has led to the lowest melting and crystallization temperatures as well as the lowest glass transition temperature at cryogenic zone and the optimal cohesive forces between ICP matrix and rubber phase.Sample 4 therefore has the highest impact strength,but its flexural modulus is insufficient,it needs to improve the rigidity under the conditions of high toughess.

关 键 词：高抗冲共聚聚丙烯 熔体流动速率 冲击强度 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]