高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (12): 1621.

• 论文 • 上一篇    下一篇

含芳香双酯高效催化剂进行丙烯聚合及其动力学的研究

王海华, 张启兴, 饶广杰, 林尚安   

  1. 中山大学高分子研究所, 广州, 510275
  • 收稿日期:1992-03-24 修回日期:1992-05-30 出版日期:1992-12-24 发布日期:1992-12-24
  • 通讯作者: 王海华
  • 基金资助:

    国家自然科学基金

Studies on Propylene Polymerization and Polymerization Kinetics Under Highly Active Catalyst Comprising Phthalic Ester

WANG Hai-Hua, ZHANG Qi-Xing, RAO Guang-Jie, LIN Shang-An   

  1. Institute of Polymer Science, Zhongshan University, Guangzhou, 510275
  • Received:1992-03-24 Revised:1992-05-30 Online:1992-12-24 Published:1992-12-24

PDF (PC)

被引次数

4

摘要： 采用多种芳香双酯作为电子给予体制备了丙烯聚合高效催化剂,该催化剂具有高活性、聚合反应平稳、产物等规度高等特征.研究了多种芳香双酯和外加各种烷基硅氧烷对丙烯聚合的作用,测定了聚合反应动力学曲线,确定了聚合动力学方程.用扫描电镜研究了催化剂的形态,表明双酯组份能使催化剂结合得较紧密;对聚合产物的结构用DSD、红外光谱进行了表征.

关键词: 丙烯聚合, 高效催化剂, 邻苯二甲酸酯, 聚合动力学, TiCl4

Abstract: The polymerization of propylene under highly active catalyst comprising phthalic esters 1,2-C6H4(COOEt)2,1,2-C6H4(COOCH2CH=CH2)2,1,2-C6H4(COOBu)2 as electron-donors has been studied.It was found that the PPtacticity would raise with increasing phthalic esters,and the catalytic activity decreases while the PPtacticity increases.By adding silicon compounds PhSi(OEt)3,Ph2Si(OMe)2,Ph2Si(OEt)2,(CH3)2Si(OEt)2,there are almost the same results.The kinetics of propylene polymerization has been investigated.The polymerization rate equation in good agreement with experimental evidence is expressed as:Vt-Va=(V0-Va)e-βt,The change in morphology of the catalyst was studied before and after adding phthalate ester by SEM.

Key words: Propylene polymerization, Highly active catalyst, Phthalic esters, Polymerization kinetics, TiCl4

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