中国塑料 ›› 2007, Vol. 21 ›› Issue (2): 31-35.

• 材料与性能 • 上一篇    下一篇

β晶聚丙烯非等温结晶动力学的研究#br#

秦亚伟1,郭绍辉1,冯嘉春2*,刘又一2,郑德3,黄锐4,钱玉英3   

  1. 1.中国石油大学(北京)化工学院,北京102249; 2.复旦大学高分子科学系,上海200433;3.广东炜林纳功能材料有限公司,广东佛山528521; 4.四川大学材料科学与工程学院,四川成都610065
  • 出版日期:2007-02-26 发布日期:2021-03-18
  • 基金资助:
    国家重点基础研究计划973项目((2005CBG23800)、国家自然科学基金项目((50673021)、上海自然科学基金项目(06ZR14007),上海市科委项目(0552580395)

Non-isothermal Crystallization Kinetics of β-form Polypropylene Induced by Rare Earth β-nucleating Agent

QIN Ya-wei 1,GUO Shao-hui 1,FENG Jia-chun2*,LIU You-yi2,ZHENG De3,HUANG Rui4,QIAN Yu-ying3   

  1. 1. College of Chemical Science and Engineering,China University of Petroleum, Beijing 102249,China;2. Institute of Advanced Materials, Fudan University, Shanghai 200433, China;3. Guangdong Winner Functional Materials Co Ltd, Guangdong, Foshan 528521, China;4. College of Polymer Science and Engineering, Sichuan University, Chengdu 610065,China
  • Online:2007-02-26 Published:2021-03-18

摘要: 利用差示扫描量热法(DSC)研究了聚丙烯在加人稀土类R晶成核剂前后形成的。晶聚丙烯和P晶聚丙烯的非等温结晶行为,发现该成核剂能诱导生成高含量a晶型,当其含量为0. 1%(质量分数,下同)时,R晶型含量大于90%。采用Jeziorny法和莫志深法对DSC数据进行处理后发现,该成核剂的加人虽然降低了结晶速率,但使结晶温度得到大幅度提高,是一种有效的成核剂。

关键词: 聚丙烯, β晶成核剂, 稀土, 非等温结晶, 动力学

Abstract: The non-isothermal crystallization of polypropylene containing a rare earth β-nucleating agent was studied using differential scanning calorimetry (DSC) at several different cooling rates. When the dosage of β-nucleating agent was 0, 1 wt,over 90%of β-crystallite was obtained. The non-isothermal crystallization kinetics was analyzed using methods of Jeziorny and Mozhishen.  It showed that β-nucleating agent increased crystallization temperature, though the rate of crystallization decreased.

Key words: polypropylene, β-nucleating agent, rare earth, non-isothermal crystallization, kinetics

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