内给电子体对Ziegler-Natta催化剂聚合行为及氢调敏感性的影响  

Effect of internal electron donors on polymerization behavior and hydrogen sensitivity of Ziegler-Natta catalysts

作　　者：李红明[1,2] 高明智 周军[4] 张宇 张明革 黄启谷 黄伟欢[2] 李萌萌 洪柳婷 义建军 LI Hongming;GAO Mingzhi;ZHOU Jun;ZHANG Yu;ZHANG Mingge;HUANG Qigu;HUANG Weihuan;LI Mengmeng;HONG Liuting;YI Jianjun(State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,Beijing 100029,China;PetroChina Petrochemical Research Institute,Beijing 102206,China;SINOPEC Beijing Research Institute of Chemical Industry,Beijing 100013,China;PetroChina North China Chemicals Marketing Company,Beijing 100009,China)

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室,北京100029 [2]中国石油石油化工研究院,北京102206 [3]中国石化北京化工研究院,北京100013 [4]中国石油华北化工销售公司,北京100009

出　　处：《弹性体》2019年第4期17-23,共7页China Elastomerics

摘　　要：以芴二醚、芴二醚酯、芴二醇酯、邻苯二酸酯四种内给电子体作为氢调敏感性研究对象,考察了内给电子体结构对催化剂的聚合行为和氢调敏感性的影响规律。结果表明,通过内给电子体结构的变化,可以制备出具有不同氢调敏感性的催化剂,通过内给电子体结构设计可以实现对催化剂氢调敏感性的有效调控。氢调敏感性低的催化剂在加氢较少的情况下发生2,1插入几率较低,主要是发生1,2插入,容易产生相对分子质量很高的聚合物,这也是氢调敏感性低的催化剂得到的聚合物的相对分子质量分布曲线在高相对分子质量部分会有一个小凸起的原因。In this paper,four internal electron donors were designed as hydrogen sensitivity research objects,and the influence of internal electron donor structures on the polymerization behavior and hydrogen sensitivity of the catalyst was investigated.The results showed that catalysts with different hydrogen sensitivities can be prepared through the structural changes of internal electron donors,and the effective control of the hydrogen sensitivity of the catalysts can be realized through the structural design of internal electron donors.The catalysts with poor hydrogen sensitivity had a low probability of 2,1 insertions,and were easy to produce polymers with high molecular weight.This is also the reason why the molecular weight distribution curve of polymers obtained by the catalyst with poor hydrogen sensitivity have a small bulge in the high molecular weight part.

关 键 词：ZIEGLER-NATTA催化剂 丙烯聚合 氢调敏感性 

分 类 号：TQ316[化学工程—高聚物工业]