中华医学超声杂志

应用化学 ›› 1996, Vol. 0 ›› Issue (5): 76-78.

• 研究简报 • 上一篇    下一篇

TiCl4/SiO2－MgCl2载体催化剂下的乙烯/己烯－1共聚反应

陈辉1, 张学全1, 黄葆同1, 王展望2, 杨永然2   

  1. 1. 中国科学院长春应用化学研究所 长春 130022;
    2. 辽阳化纤公司化工三厂 辽阳
  • 收稿日期:1995-10-30 修回日期:1996-04-23 出版日期:1996-10-10 发布日期:1996-10-10

Copolymerization of Ethylene/Hexene-1 with TiCl4/SiO2-MgCl2 Supported Catalyst

Chen Hui1, Zhang Xuequan1, Huang Baotong1, Wang Zhanwang2, Yang Yongran2   

  1. 1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022;
    2. No.3 Chemical Plant, Liaoyang Chemical Fiber Corporation, Liaoyang
  • Received:1995-10-30 Revised:1996-04-23 Published:1996-10-10 Online:1996-10-10

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摘要： 乙烯/α-烯烃(丁烯、己烯和辛烯等)共聚物按α-烯烃含量和分布的不同可分为线性低密度聚乙烯(LLDPE)和极低密度聚乙烯(VLDPE)等.现两者均实现工业化生产.LLDPE是通过加入比LLDPE更多的共聚单体,而使其密度进一步降低,一般低于0.91 g/cm3.

关键词: 乙烯, 己烯, 共聚, Ziegler－Natta催化剂

Abstract: Copolymerization of ethylene/hexene-1 has been carried out by using a TiCl4/SiO2-MgCl2 catalyst. Results show that the rate of copolymerization is higher than that of ethylene homopolymerization. The phenomenon is explained from the viewpoint of unsteady diffusion kinetics of heterogeneous Ziegler-Natta catalysts. The density of ethylene/hexene-1 copolymer obtained reaches the range of very low density polyethylene. The thermal behavior and sequence length distribution of copolymers have been characterized by DSC and 13C NMR.

Key words: ethylene, hexene, copolymerization, Ziegler-Natta catalyst

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