双转子混炼机中固体粉末与聚合物共混的数值模拟  

Numerical Simulation on Mixing of Solid Powder and Polymer in Double-rotor Continuous Mixer

作　　者：马昆[1] 丁玉梅[1] 邵剑波[1] 刘苗苗[1] 杨卫民[1] 安瑛[1] 

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《橡胶工业》2015年第9期527-530,共4页China Rubber Industry

摘　　要：利用聚合物加工分析软件POLYFLOW模拟双转子连续混炼机中固体粉末在聚合物中的混合过程,并对不同转子转速下的三维等温非牛顿流场进行了流场和动态混合计算及统计学后处理。采用累积停留时间分布表征混合物的轴向混合性能,用团聚体累积粒径分布表征固体粉末团聚体在聚合物基体中的分散状态,并以分离尺度分布表征混合物的分布混合性能。结果表明:在一定范围内提高转子转速有利于提高固体粉末与聚合物的分散、分布混合性能,确定合理的转速范围对于获得高性能聚合物复合材料至关重要。The mixing process of solid powder and polymer matrix in a double-rotor continuous mixer was simulated by using polymer processing analysis software POLYFLOW.The 3Disothermal non-Newtonian flow fields and dynamic mixing under different rotor speeds were calculated and statistics post-processing was conducted.Axial mixing performance of the compound was evaluated by using cumulative residence time distribution.Dispersive mixing state of solid powder agglomerates in polymer matrix was evaluated by using accumulative size distribution function of solid powder agglomerates.Distribution mixing performance of the compound was evaluated by using segregation scale distribution.The results showed that,through increasing the rotor speed within a certain range,dispersion and distribution mixing performance of solid powder and polymer could be improved,and it was full of significance to determine a reasonable rotor speed range to obtain high performance polymer composites.

关 键 词：固体粉末 聚合物 双转子连续混炼机 混合性能 数值模拟 

分 类 号：TQ317[化学工程—高聚物工业]