石油化工2024，Vol.53Issue(4)：532-537,6.DOI:10.3969/j.issn.1000-8144.2024.04.008
双峰乙烯/1-辛烯共聚物的制备及其性能
Preparation and properties of bimodal ethylene/1-octene copolymer
摘要
Abstract
Four kinds of metallocene catalysts with different structures were prepared.By combining two metallocene catalysts,the ethylene/1-octene copolymer with bimodal molecular weight distribution was prepared,and the effect of bimodal molecular weight distribution on the properties of copolymers was analyzed by GPC,DSC,13C NMR.Experimental results show that the ethylene/1-octene copolymer with bimodal molecular weight distribution can be successfully prepared by combining the metallocene catalyst M1 with M4 or M2 with M3.The prepared bimodal distribution copolymer has few 1-octene-enriched sequences,and the low melt flow rate results in good processing performance,which has density,crystalline state properties and amorphous state properties close to those by the catalyst with low copolymerization ability,and has high tensile strength,high elongation at break and good elastic recovery performance.关键词
茂金属催化剂/高温溶液聚合/双峰聚乙烯/聚烯烃弹性体Key words
metallocene catalyst/high temperature solution polymerization/bimodal polyethylene/polyolefin elastomer分类
化学工程引用本文复制引用
牟祥升,王立娟,张瑞,胡满芳,姜涛,闫冰..双峰乙烯/1-辛烯共聚物的制备及其性能[J].石油化工,2024,53(4):532-537,6.基金项目
中国石油基础性前瞻性科技专项项目(2023ZZ35J) （2023ZZ35J）
中国博士后科学基金面上项目(2022M721431) （2022M721431）
天津科技大学大学生创新创业训练计划项目(202310057078). （202310057078）
