【作者】 应继儒； 彭少贤； 解孝林； 周华民； 李德群；

【Author】 Ying Ji-Ru, Peng Shao-Xian, Xie Xiao-Lin, Zhou Hua-Min, Li De-Qun ( Department of Chemistry, Huazhong University of Science and Technology ,Wuhan 430074 Department of Chemical Engineering, Hubei University of Technology ,Wuhan 430068 State Key Laboratory of Plastic Forming Simulation and Die & Mould Technology, Wuhan, 430074)

【机构】 华中科技大学化学系； 湖北工业大学化学与环境工程学院； 塑性成形模拟及模具技术国家重点实验室；

【摘要】 利用HAKKE转矩流变仪和毛细管流变仪研究了PP／PP-R体系的流变行为。探讨了转速、剪切速率、温度及共混物的组成对熔体流变行为的影响。结果表明:PP与PP-R 之闯存在很好的相容性,随着PP-R含量的增加,PP／PP-R共混物熔体粘度及其对温度和剪切速率的敏感性相应增加,共混物熔体粘度表现出正偏差(PDB)行为。更多还原

【Abstract】 The rheological behaviors of PP/PP-R blends were studied by Haake torque and capillary rheometers. The influences of rotation rate, temperature and the content of PPR on the rheological behaviors were investigated. The results showed that there is a good compatibility between PP and PPR. The viscosity and its dependences upon shear rate and temperature increase in PP/PPR blends with the content of PPR. The rheological behavior of the PP/PPR blend exhibits the characterics of the positive deviation blends (PDB).更多还原