复合扩链剂对回收PET的增黏改性及其结晶动力学研究Chain-Extension and Non-Isothermal Crystallization Kinetics of Recycled PET Using United Chain-Extender
刘冰;杨明山;高保平;杨金娟;
摘要(Abstract)：
分别采用六亚甲基-1,6-二异氰酸酯(HMDI)和HMDI/环氧树脂复配体系作扩链剂,使用双螺杆熔融挤出工艺对废旧聚对苯二甲酸乙二醇酯(rPET)瓶片进行扩链增黏。结果表明:HMDI单独作为扩链剂时,rPET的特性黏数从0.467dL/g增加到0.633dL/g,而HMDI/环氧树脂复配体系作扩链剂时,rPET的特性黏数增加到了0.703dL/g,这说明复配扩链剂对rPET的扩链效果更为明显;HMDI/环氧树脂复配体系扩链后,rPET的结晶能力下降。
关键词(KeyWords)： 回收;聚对苯二甲酸乙二醇酯;扩链剂;非等温结晶动力学
基金项目(Foundation):
作者(Authors): 刘冰;杨明山;高保平;杨金娟;
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