中国塑料 ›› 2014, Vol. 28 ›› Issue (03): 33-39 .DOI: 10.19491/j.issn.1001-9278.2014.03.008

• 材料与性能 • 上一篇    下一篇

聚四氟乙烯/聚苯酯复合材料非等温结晶动力学研究

郑振超 寇开昌 张冬娜   

  1. 西北工业大学理学院应用化学系 西北工业大学 西北工业大学理学院
  • 收稿日期:2013-08-05 修回日期:2013-12-20 出版日期:2014-03-15 发布日期:2014-03-15

Study on Non-Isothermal Crystallization Kinetics of PTFE/POB Composites

Zheng Zhen-Chao   

  • Received:2013-08-05 Revised:2013-12-20 Online:2014-03-15 Published:2014-03-15
  • Contact: Zheng Zhen-Chao

摘要: 通过冷压烧结的方法制备了聚四氟乙烯/聚苯酯(PTFE/POB)复合材料。采用差示扫描量热法(DSC)研究了PTFE/POB复合材料的非等温结晶行为,并利用Jeziorny法对所得DSC数据进行分析。结果表明,随着冷却速率的增加,结晶峰向低温方向移动,结晶温度范围增大,结晶度下降;Jeziorny方程能够较好地描述PTFE/POB复合材料的非等温结晶动力学;POB有异相成核作用,改善了PTFE的结晶性能,提高了PTFE的结晶速率。

关键词: 非等温结晶, 结晶速率, 聚四氟乙烯, 聚苯酯, 动力学

Abstract: Polytetrafluoroethylene/polybenzoate (PTFE/POB) composites, in which POB particles filled PTFE matrix, were prepared by cold molding and sintering in the air. The non-isothermal crystallization behavior of PTFE/POB composites was studied by differential scanning calorimetry (DSC), and the Jeziorny equation was used to analyze the non-isothermal crystallization kinetics. As the cooling rate increased, peak temperature shifted to a lower temperature, crystallinity temperature the peak became wider, and crystallinity reduced. The addition of POB increased crystallinity and the crystallization rate of PTFE.

Key words: non-isothermal crystallization, crystallization rate, polytetrafluoroethylene, polybenzoate, kinetics

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