剪切场下玻纤/聚丙烯复合体系熔体中网络结构的演变

摘要

通过高级流变仪对两组玻纤/聚丙烯(PP)复合体系在不同预剪切速率下的动态流变行为进行了研究.结果发现,界面黏结强的一组试样的储能模量(G′)、损耗模量(G″)和复数黏度(η*)随剪切速率的增大呈先增加后减小的趋势;界面黏结弱的一组试样的储能模量(G′)、损耗模量(G″)和复数黏度(η*)随剪切速率的增大而减小.%The dynamic rheological behavior of two groups of glass fiber/PP composites at different shear rate were investigated by ARES. The result showed that storage modulus ( G′), loss modulus (G") and complex viscosity (η* ) of the group whose interfacial adhesion was strong, increased firstly and then decreased with the increase of the shear rate. G′, G"and η * of another group with weak interfacial adhesion structure decreased with the increase of the shear rate.