动态塑化过程振动参数对聚丙烯性能的影响

Effect of Vibration Parameters on Properties of PP in Dynamic Plasticizing Process

采用新型液压脉振式注射机成型聚丙烯(PP)试样,探讨了塑化过程中振幅和频率对PP物理力学性能和成型过程整机能耗的影响。结果表明:保持其他工艺参数不变,在塑化过程中施加振动后,PP试样的拉伸强度提高9.8%,冲击强度提高13.8%,密度提高0.3%,整机加工能耗降低6.6%。

The PP samples were molded by novel hydraulic vibration injection molding machine.The effects of vibration amplitude and frequency on physical and mechanical properties of PP and power consumption in the plasticizing process were studied.The results show that in the case of imposing vibration under otherwise identical conditions,the tensile strength of PP sample increases by 9.8%,the impact strength increases by 13.8%,the density increases by 0.3%,while the power consumption of the injection molding machine decreases by 6.6%.