摘要
以PS、DCP、GMA作为PET/EPDM共混体系的增容剂 ,以DSC和X射线衍射探讨了PET/EPDM共混物的结晶性能 ,以偏光显微镜和扫描电子显微镜探讨了共混物的形态。结果表明 ,PET/g EPDM共混体系的熔点可提高10℃ ,玻璃化温度降低 ,结晶起始温度提高约 2 0℃。共混体系中 ,当EPDM含量低时 ,PLM下观察到的是较为完整的球晶 ,随着EPDM含量逐渐提高 ,观察得到的是不完善的球晶、微晶、晶粒这样一个晶体变化过程 ,结晶完善程度降低。
The crystallization behavior of PET/EPDM blends was studied using DSC and XRD,and the morphology was investigated using scanning electron microscope and polarizing microscope.PS,DCP and GMA were used as the compatibilizer of the PET/EPDM blend systems,respectively.The results show that PS,DCP and GMA have effects on the crystallization and structures of the PET/EPDM blend systems as the reactive compatibilizer.The melting-points of the blend systems increase 9 ℃,then the glass-transition temperatures decrease about 2.6 ℃,and the initial crystallization temperatures increase about 20 ℃.In the blend systems, perfect spherulites on the PLM are observed when the content of EPDM is low,and the spherulites become imperfect with increasing of EPDM,and at last become microclines.
出处
《中国塑料》
CAS
CSCD
北大核心
2004年第5期23-27,共5页
China Plastics
基金
国家重点基础研究专项经费资助 (G19990 64 80 5 )
关键词
聚对苯二甲酸乙二醇酯
三元乙丙橡胶
增容剂
结晶性能
polyethylene terephthalate
ethylene propylene dinene monomer
compatibilizer
crystallization behavior
