摘要:本论文通过将PP和POE以及HDPE在双螺杆挤出机中共混挤出造粒，然后进行注塑制样，对样条进行性能测试，试图制备高韧性聚丙烯材料。力学性能测试表明：在PP中加入POE、HDPE以后共混物的冲击强度得到了提高，而拉伸强度、弯曲强度有所降低。熔体流动速率测试表明：随着PP含量的增加，熔体流动速率上升。热力学形变测试表明：随着PP含量的增加，热变形温度升高。实验结果表明：当在POE含量为15％和HDPE为10%时就可以显著提高共混体系的冲击强度，而共混物的拉伸强度和弯曲强度下降不是很明显。

关键词： PP；POE；HDPE；力学性能；热变形温度

Abstract：This paper by the PP and POE and HDPE twin-screw extruder CPC mixed extrusion granulation, and then injection molding system, the performance test for the spline, and trying to preparation of high-tenacity polypropylene. The mechanical properties tests show that: in the PP and POE, the impact strength of blends of HDPE later been improved, while the tensile strength, flexural strength decreased. The melt flow rate test: With the increase of PP content, the melt flow rate increased. Thermodynamic deformation test: With the increase of PP content, the thermal deformation temperature. The experimental results show that: when the POE content of 15% and HDPE 10% can significantly improve the impact strength of the blends, while the tensile strength and flexural strength of the blends drop is not very obvious.

Key words: PP；POE；HDPE；Mechanical properties; heat distortion temperature