高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (10): 1464.

• 研究论文 • 上一篇    下一篇

低乙烯含量聚丙烯共聚物结晶成核剂研究

张瑞云, 罗筱烈, 郑海峰, 马德柱   

  1. 中国科技大学材料科学系, 合肥 230026
  • 收稿日期:1992-12-29 修回日期:1993-04-01 出版日期:1993-10-24 发布日期:1993-10-24
  • 通讯作者: 马德往.
  • 作者简介:张瑞云, 男, 30岁, 博士研究生.
  • 基金资助:

    国家自然科学基金;中国科学院结构分析开放实验室基金

Investigation of Nucleating Agents on Low Ethyl ene Content Polypropylene Copolymer Crystallization

ZHANG Rui-Yun, LUO Xiao-Lie, ZHENG Hai-Feng, MA De-Zhu   

  1. Department of Materials Science and Engineering, University of Science and Technology, Hefei, 230026
  • Received:1992-12-29 Revised:1993-04-01 Online:1993-10-24 Published:1993-10-24

摘要: 利用DSC和偏光显微镜等手段研究了部分成核剂对聚丙烯均聚物(PP)、低乙烯含量聚丙烯共聚物及聚丙烯/聚乙烯(PP/PE)共混物结晶行为的影响,结果表明所用成核剂对PP和改性PP具有一定的普适性.聚丙烯共聚物中,由于链结构规整性变差,成核剂的作用显得特别突出,而PP/PE共混物中,由于成核剂向PE相迁移而使其对PP结晶的成核效率降低.

关键词: 成核剂, 聚丙烯共聚物, 聚丙烯/聚乙烯共混物, 结晶行为

Abstract: With the Differential Scanning Calormeter (DSC) and Polarized Light Microscope (PLM), the effect of a series of nucleating agents on the low ethylene content polypropylene copolymers and polypropylene (PP)/polyethylene (PE) blends have been studied.It is shown that the nucleating agent which is effective to the crystallization of PPhomopolymer is also useful to the crystallization of PPcopolymers.In general, the efficiency of nucleating agent in PPcopolymer is higher than PPhomopolymer, which can be well explained by the difference of regularity of molecular chain between PPcopolymer and PPhomopolymer.In PP/PEblends, the nucleating agents affect the nucleation of both PPand PEcrystallization.

Key words: Nucleating agent, PP copolymer, PP/PE blend, Crystallization

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