文献类型：期刊文献

中文题名：Cp_2ZrCl_2/MAO催化剂催化乙烯与环烯烃共聚合研究

英文题名：Copolymerization of ethylene and cycloolefin catalyzed by Cp_2ZrCl_2/MAO

作者：郝鹏飞[1];何雪莲[1];刘柏平[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海市200237

年份：2016

卷号：33

期号：5

起止页码：16

中文期刊名：合成树脂及塑料

外文期刊名：China Synthetic Resin and Plastics

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；

基金：国家自然科学基金面上项目(51573048);万华化学企业资助项目

语种：中文

中文关键词：乙烯;4-乙烯基环己烯;1,5-环辛二烯;共聚合;共聚单体浓度

外文关键词：ethylene;4-vinyl-cyclohexene;1,5-cyclooctadiene;copolymerization;co-monomer concentration

摘要：本工作采用二氯二茂锆(Cp_2ZrCl_2)/甲基铝氧烷(MAO)催化剂催化乙烯分别与1,5-环辛二烯(COD),4-乙烯基环己烯(VCH),1,5,9-环十二碳三烯(CDT)的共聚合,研究了共聚单体类型和浓度对共聚合的影响,采用差示扫描量热仪、高温凝胶渗透色谱仪和核磁共振波谱仪研究了产物的链结构和热性能。研究发现:COD的共聚合性能最好,其不仅对催化剂的活性影响最小,而且COD插入到聚合物中的摩尔分数(插入率)较高,当COD浓度为1.0 mol/L时,COD插入率为0.6%。尽管VCH对催化剂的活性影响也较小,但其与乙烯进行共聚合的能力较差,而CDT不但使催化剂的活性明显下降,而且无法与乙烯进行共聚合。
The copolymerization of ethylene with 1,5-cyclooctadiene(COD),4-vinylcyclohexene(VCH)and 1,5,9-cyclododecatriene(CDT)catalyzed respectively by Cp2ZrCl2/methylaluminoxane(MAO)system are investigated in this research.The impacts of type and concentration of co-monomer on the polymerization behavior are observed.The chain structure and thermal properties of the products are characterized by differential scanning calorimeter(DSC),high temperature-gel permeation chromatograph(HT-GPC),and nuclear magnetic resonance(NMR).It is found that COD is the best co-monomer in this catalytic system,which not only contributes least to the catalyst activity,but also shows high mole ratio inserted to the polymer(insertion rate).When the concentration of COD in the reaction system is 1.0 mol/L,the insertion rate of COD is 0.6%.VCH also exerts little effect on the activity of catalyst,but its copolymerization ability is poor.CDT not only reduces the activity of catalyst significantly,but also can't be copolymerized with ethylene.