高流动性刚韧平衡聚丙烯的开发及性能  

Development and performance of polypropylene with high flowability and stiffness-toughness balance

作　　者：张闽 ZHANG Min(Sinopec-SK(Wuhan)Petrochemical Co.,Ltd.,Wuhan 430082,China)

机构地区：[1]中韩(武汉)石油化工有限公司,湖北武汉430082

出　　处：《石油化工》2024年第5期718-722,共5页Petrochemical Technology

摘　　要：采用高氢调敏感性、高立构定向性的HR催化剂,结合高效成核剂技术在300 kt/a ST环管装置上通过氢调法制备了高流动性刚韧平衡聚丙烯产品M30RH,并利用熔体流动速率(MFR)测试、IR、SEM、DSC、POM等方法分析了M30RH的结构与性能。实验结果表明,M30RH的MFR(10 min)为30.7 g、橡胶相含量为19.7%(w)、常温简支梁缺口冲击强度为9.3 kJ/m^(2)、弯曲模量为1304 MPa、气味等级为3.9;与市售产品相比,M30RH的乙烯单元更倾向于分布在橡胶相中,具有更好的刚韧平衡性;M30RH的结晶性能与市售产品基本相同,在保持韧性的同时,提高了刚性和加工效率。Polypropylene product M30RH with high flowability and stiffness-toughness balance was prepared by hydrogen adjustment method using HR catalyst with high hydrogen sensibility and high stereoregularity,combined with efficient nucleating agent technology in a 300 kt/a ST loop reactor.The structure and properties of M30RH were analyzed with melt flow rate(MFR)test,IR,SEM,DSC,and POM.The results show that M30RH has MFR(10 min)of 30.7 g,rubber phase content of 19.7%(w),room temperature notched charpy impact strength of 9.3 kJ/m^(2),bending modulus of 1304 MPa,and odor level of 3.9.Compared with commercially available products,the ethylene units of M30RH tend to distribute in the rubber phase and M30RH has a better balance between stiffness and toughness.The crystallization performance of M30RH is basically the same as that of commercially available products,which improves rigidity and processing efficiency while maintaining toughness.

关 键 词：聚丙烯 高流动性 刚韧平衡 HR催化剂 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]