超声挤出制备聚对苯二甲酸乙二醇酯/膨胀石墨复合材料及其结晶和分散形态  

Ultrasonic Oscillation Induced Morphology and Property Development of Polyethylene Terephthalate/Expended Graphite Composites

作　　者：刘艳玲[1] 孙希静[1] 李娟娟[1] 赵丽娟[1] 李权[1] 李道华[2] 韦良强[3] 

机构地区：[1]四川师范大学化学与材料科学学院,四川成都610066 [2]内江师范学院化学化工学院,四川内江641112 [3]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014

出　　处：《四川师范大学学报（自然科学版）》2017年第3期347-351,共5页Journal of Sichuan Normal University（Natural Science）

基　　金：国家自然科学基金(51303116);四川省大学生创新创业训练计划项目(201310636024)

摘　　要：采用超声挤出制备聚对苯二甲酸乙二醇酯/膨胀石墨复合材料(PET/EG),考察不同功率下复合材料的结构演变以及功率对复合材料熔融及结晶行为的影响.结果表明,超声辐照能使EG粒子尺寸减小,使其在基体PET中的分散更均匀.由于粒子的成核效应,PET/EG复合材料的结晶温度和结晶度都有所提高;引入超声后,复合材料结晶温度提高.TGA结果分析表明,超声辐照能提高PET/EG复合材料的热稳定性.PET/EG composites is being prepared via ultrasonic extrusion technology.Then,structure evolution of composites is being examined in different ultrasonic powers and the effect of ultrasonic irradiation on melting and crystallization behavior of composites.The results show that the ultrasonic irradiation can reduce the size of the EG particles and make the dispersion of PET matrix more uniform.Due to the nucleation effect of particles,the crystallization temperature and crystallinity of PET/EG composites have been improved.After the introduction of ultrasound,the crystallization temperature of the composites is being improved.The analysis of TGA results shows that the thermal stability of PET/EG composites can be improved by ultrasonic irradiation.

关 键 词：超声挤出 膨胀石墨 复合材料 

分 类 号：O631[理学—高分子化学]