PC/PETG共混物熔体的流变性能  

Rheology study on PC/PETG blends

作　　者：张雨[1] 丁雪佳[1] 郭甜甜[1] 周克斌[1] 韩海军[1] 张丽娟[1] 

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029

出　　处：《化工进展》2011年第12期2685-2687,共3页Chemical Industry and Engineering Progress

基　　金：科技部科技人员服务企业行动项目(2009GJA1004508)

摘　　要：采用熔融共混工艺制备了聚碳酸酯(PC)/聚对苯二甲酸乙二醇酯-1,4-环己烷二甲醇酯(PETG)共混物,测试了PC/PETG共混物的熔融指数,研究了共混物的复数黏度与剪切频率、温度以及物料组成的关系。结果表明,PETG的引入改善了PC的成型加工流变性能;PC/PETG共混物呈现出假塑性流体特性,表现出切力变稀的现象;共混物随着温度的升高,复数黏度下降,随着PETG含量的增加,共混物黏度呈现下降的趋势。A blend of polycarbonate（PC）/polyethylene terephthalate glycol（PETG）was prepared in a twin-screw extruder by melt blending.The melt index was measured.The complex viscosity was studied at different shear rates,temperatures and compositions.The results show that the introduction of PETG enhances the PC processing and rheological property significantly,PC / PETG blend appears a typical non-Newtonian fluid behavior with the performance of shear-thinning phenomenon,the complex viscosity decreases with temperature increasing,and blend viscosity decreases with the increase of PETG content.

关 键 词：聚碳酸酯 聚对苯二甲酸乙二醇酯-1 4-环己烷二甲醇酯 共混 流变性能 

分 类 号：O636.1[理学—高分子化学]