聚四氟乙烯/聚苯酯复合材料非等温结晶动力学研究  

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

作　　者：郑振超[1] 寇开昌[1] 张冬娜[1] 

机构地区：[1]西北工业大学理学院陕西省高分子科学与技术重点实验室,陕西西安710129

出　　处：《中国塑料》2014年第3期33-39,共7页China Plastics

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。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, the peak crystallinity temperature became wider, and crystallinity reduced. The addition of POB increased crystallinity and the crystallization rate of PTFE.

关 键 词：聚四氟乙烯 聚苯酯 非等温结晶 动力学 结晶速率 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]