中华医学超声杂志

应用化学 ›› 1991, Vol. 0 ›› Issue (3): 1-4.

• 研究论文 •    下一篇

超微氧化镧填充聚丙烯恒温结晶动力学

刘景江, 唐功本, 周华荣, 王增林, 郭其鹏, 倪嘉缵   

  1. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:1990-03-31 修回日期:1990-07-19 出版日期:1991-06-10 发布日期:1991-06-10
  • 基金资助:
    中国科学院长春应化所稀土化学开放实验室资助项目

ISOTHERMAL CRYSTALLIZATION KINETICS OF LANTHANUM OXIDE FILLED POLYPROPYLENE

Liu Jingjiang, Tang Gongben, Zhou Huarong, Wang Zenglin, Guo Qipeng, Ni Jiazuan   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1990-03-31 Revised:1990-07-19 Published:1991-06-10 Online:1991-06-10

PDF

591

被引次数

41 | 12

摘要： 用差示扫描量热法测定了超微氧化镧填充聚丙烯恒温结晶过程中热焓的变化。结果表明,Avrami指数基本上不受氧化镧的影响,超微氧化镧的加入增加了晶核的数目并使结晶速度常数增加三倍左右,结晶活化能和晶格内垂直于分子链方向单位面积的自由能降低幅度并不大。

关键词: 聚丙烯, 结晶动力学, 氧化镧, 示差扫描量热法

Abstract: Isothermal crystallization kinetics of polypropylene (PP) and a PP composite with lan-thanum oxide has been studied by DSC.Although the crystallization rate increased by ca.three times in the composite, the Avrami index, the activation energy for crystallizationas well as the end surface frce energy were affected not markedly.The increase incrystallization rate for the composite is considered as a result of the increase in numberof nucleators owing to lanthanum oxide added.

Key words: polypropylene, lanthanum oxide, crystallization, kinetics

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