To overcome the low modulus and low maximum service temperature of polypropylene (PP) and ethylene-propylene-diene monomer (EPDM) blends, incorporation of talc into blend have been considered. In this study, the effect of various mixing methods of morphological behavior and mechanical properties of PP/EPDM/talc compound were investigated. Samples were prepared by different methods in internal mixer and co-rotating twin-screw extruder. It was found, the tensile properties were not affected by applying different mixing methods.The highest impact resistance was related to sample which had pre-blending on two roll mills and finally mixed in the internal mixer. Scanning electron microscopy (SEM) micrographs showed that the rubber dispersed morphology for all samples and the finest morphology was related to sample with the highest impact resistance. Because of pre-blending of EPDM/talc on two roll mills, this sample showed the best dispersion and distribution of talc.

为了克服聚丙烯（PP）和乙烯-丙烯-二烯单体（EPDM）共混物的低模量和低最高使用温度，已考虑将滑石掺入共混物中。在这项研究中，研究了各种混合方法对PP / EPDM /滑石粉的形态行为和力学性能的影响。在内部混合器和同向旋转双螺杆挤出机中通过不同的方法制备样品。结果发现，拉伸性能不受采用不同混合方法的影响。最高的抗冲击性与在两个辊磨机上预混合并最终在内部混合器中混合的样品有关。扫描电子显微镜（SEM）显微照片显示，所有样品的橡胶分散形态和最细的形态与具有最高抗冲击性的样品有关。