高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (10): 1923.

• 研究简报 • 上一篇    下一篇

聚丙烯催化合金的结晶行为研究

林忠华, 彭懋, 郑强   

  1. 浙江大学高分子科学与工程学系, 杭州 310027
  • 收稿日期:2002-10-10 出版日期:2003-10-24 发布日期:2003-10-24
  • 通讯作者: 郑强(1960年出生),男,教授,博士生导师,主要从事多组分高分子体系流变学研究.E-mail:zhengqiang@cmsce.zju.edu.cn E-mail:zhengqiang@cmsce.zju.edu.cn
  • 基金资助:

    国家杰出青年基金(批准号:50125312);国家重点基础规划项目(批准号:G1999064803)资助

Studies on Crystallization Behavior of Polypropylene Catalloys

LIN Zhong-Hua, PENG Mao, ZHENG Qiang   

  1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2002-10-10 Online:2003-10-24 Published:2003-10-24

关键词: 聚丙烯催化合金(PP-c), 聚丙烯(PP), 乙烯组分, 结晶行为

Abstract: Non-isothermal crystallization behavior of molten polypropylene catalloys(PP-c) was studied by using differential scanning calorimetry(DSC).Besides, crystallization process and spherulite morphology were observed through polarized optical microscopy.Compared with pure polypropylene(PP), the crystallization peak temperature(tcp) of PP-c shifted to a higher temperature, and the value of tcp became bigger with the increase of ethylene component in PP-c.The spherulitic geometrical dimension of PP-c decreased distinctly, and the number of spherulite augmented obviously.It is believed that the ethylene component acts as the heterogeneous nucleation agent in PP-c.

Key words: Polypropylene catalloy(PP-c), Polypropylene(PP), Ethylene component, Crystallization behavior

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