PET/滑石粉复合材料结晶性能、热性能和力学性能研究  

Study on Crystallization Behavior,Thermal and Mechanical Properties of PET/Talc Composites

作　　者：崔正[1] 张宜鹏[2] 张胜[1] 陈宇[2] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]北京华腾工程新材料有限责任公司,北京100084

出　　处：《中国塑料》2009年第11期15-20,共6页China Plastics

摘　　要：采用差示扫描量热仪、热重分析仪等研究了滑石粉作为成核剂对聚对苯二甲酸乙二醇酯(PET)结晶性能、热性能以及力学性能的影响。结果表明,滑石粉的添加量为0.5%(质量分数,下同)时,可有效改善PET的结晶性能,结晶温度(Tc)比经历相同热历程的PET空白试样提高11.36℃,且结晶完善程度随降温速率的减小而提高;非等温结晶动力学研究发现,Jeziorny法和莫志深法更符合复合材料的非等温结晶过程,而二次结晶的存在使Ozawa法并不适用;由于滑石粉与基体树脂相容性好并可均匀分散,从而很好地保持了原树脂的热性能,且所得复合材料的力学性能均有所提高,其中拉伸强度提高12%。The crystallization behavior, thermal, and mechanical properties of PET/talc composites were studied using differential scanning calorimeter and thermogravimetric analysis. When the loading of talc was 0. 5 wt%, the crystallization temperature was increased by 11.36℃ based on neat PET. Ozawa, Jeziorny and Mo methods were used to describe the non-isothermal crystallization kinetics. It was found that Jeziorny and Mo methods could well describe the non- isothermal crystallization, while Ozawa was not suitable. Because of the good dispersion of talc in PET, the thermal property of PET was well maintained,and the tensile strength was improved 12 %.

关 键 词：滑石粉 聚对苯二甲酸乙二醇酯 结晶 结晶动力学 热性能 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]