高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (3): 474.

• 论文 • 上一篇    下一篇

新型高活性催化剂乙烯气相聚合的研究(Ⅱ)──改性剂、预聚合和聚合条件对乙烯气相聚合的影响

王海华, 廖荣辉, 伍青, 卢泽俭, 陈学信   

  1. 中山大学高分子研究所, 广州 510275
  • 收稿日期:1995-03-08 出版日期:1996-03-24 发布日期:1996-03-24
  • 通讯作者: 王海华,男,55岁,教授.
  • 作者简介:王海华,男,55岁,教授.
  • 基金资助:

    国家自然科学基金

Studies on Gaseous Phase Polymerization of Ethylene with Highly Active Catalyst(Ⅱ)──The Effect of Modifiers,Prepolylnerization of Catalyst and Various Polymerization Conditions on Gaseous Phase Polymerization of Ethylene

WANG Hai-Hua, LIAO Rony-Hui, WU Qing, LU Ze-Jian, CHEN Xue-Xin   

  1. Institute of Polymer Science, Zhongshan University, Guangzhou 510275
  • Received:1995-03-08 Online:1996-03-24 Published:1996-03-24

摘要: 研究了新型高活性乙烯气相聚合催化剂TiCl4/MgCl2/ZnCl2/SiCl4/醇/Al(i-Bu)3体系中不同醇、不同C2H5OH/Ti摩尔比和正丁醚对聚合反应及产物颗粒形态的影响。研究了预聚合反应及乙烯气相聚合反应规律。用扫描电镜和图象分析对催化剂、预聚物及聚合产物的形态和颗粒分布的研究结果表明:新型高活性催化剂和经预聚合制得的乙烯气相聚合物的颗粒形态类似球形,颗粒长短轴比值和大小粒径比值相近。

关键词: 乙烯气相聚合, 高活性催化剂, TiCl4, 改性剂, 颗粒形态

Abstract: In addition to the effects of type of alcobol,molar ratio on C2H5OH/Ti, and amount Of n-butyl ether in highly active catalyst of TiCl4/MgCl2/ZnCl2/SiCl4/alcohol/Al(i-Bu )3 on polymerization and morphology of the product,and the regularity of gaseous phase polymerization of ethylene and prepolymerization of catalyst have been studied.SEMand image analysis studies on morphology and particle size distribution of the catalyst and products of prepolymerization and polymerization showed that all the particle shapes were nearly spherical, and the particle ellipticity and dispersity of the catalyst were comparable to those of PEprepared with prepolymerized catalyst.

Key words: Gaseous phase polymerization of ethylene, Highly active catalyst, TiCl4, Modifier, Particle morphology

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