高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (11): 1479.

• 研究简报 • 上一篇    下一篇

乙烯与丙烯在负载型钛系催化剂上的共聚合行为

伍青, 林尚安   

  1. 中山大学高分子研究所, 广州, 510275
  • 收稿日期:1991-11-19 修回日期:1992-02-03 出版日期:1992-11-24 发布日期:1992-11-24
  • 通讯作者: 伍青
  • 基金资助:

    国家自然科学基金

Behavior of Ethylene-Propylene Copolymerization over Supported Titanium Catalyst

WU Qing, LIN Shang-An   

  1. Institute of Polymer Science, Zhongshan University, Guangzhou, 510275
  • Received:1991-11-19 Revised:1992-02-03 Online:1992-11-24 Published:1992-11-24

PDF (PC)

被引次数

1

关键词: 钛系载体催化剂, 乙烯-丙烯共聚合, 聚合动力学, 聚合物形态

Abstract: The time dependence of ethylene-propylene copolymerization rate over TiCl4/MgCl2/ EB-AlEt3 catalyst was studied.An enhanced rate of ethylene polymerization after brief copolymerization with propylene,which is much faster in comparison with that of conventional ethylene polymerization,and decaying-type kinetics were shown.It was found that the copolymerization brings about a change of morphology of the catalyst-polymer particles to loose structure.This allows the monomers diffusing more easily and developing potential activity of the catalyst,resulting in higher polymerization rate and different kinetic behavior from the homopolymerization.

Key words: Titanium catalyst, Ethylene-propylene copolymerization, Polymerization kinetics, Polymer morphology

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