相容共混物熔体的平衡转矩与组成关系的探讨  

Investigating of the Correlation of Steady-State Torque with Composition for Miscible Polymer Blends in Molten State by MiniLab Micro Compounder and Rheometer

作　　者：王聪[1] 王晶[1] 李文光[1] 

机构地区：[1]四川大学高分子材料工程国家重点实验室,四川成都610065

出　　处：《塑料》2013年第1期101-104,共4页Plastics

摘　　要：以熔体指数不同的高密度聚乙烯(HDPE)和均聚聚丙烯(PP)为试样,利用MiniLab微型混合流变仪,研究了在熔融状态下完全互容的HDPE/HDPE、PP/PP和HDPE/PP共混物熔体的平衡转矩随组成的变化规律。结果表明:相容共混体系的熔体平衡转矩-组成关系曲线一般表现为线性或者二次抛物曲线。当高分子链的化学结构单元不同时,其共混熔体的平衡转矩-组成关系多为二次抛物曲线。Using high density polyethylene （HDPE） and polypropylene （PP） with different melt flow indexes as samples, the correlation of steady-state torque with blending composition for miscible polymer blends such as HDPE/HDPE,PP/PP,and HDPE/PP in molten state was investigated by MiniLab micro compounder and rheometer. The results showed that the blending melt steady-state torque was correlated linearly or parabolically with composition in miscible systems. When the blending components were different in chemical structure units of polymer chains, a parabolic relationship between the blending composition and steady-state torque was usually present.

关 键 词：平衡转矩-组成关系 高密度聚乙烯 均聚聚丙烯 熔体相容性 MiniLab微型混合流变仪 

分 类 号：TQ317.3[化学工程—高聚物工业]