注塑工艺参数对聚丙烯透明料雾度影响研究

Effect of injection molding process parameter on haze of polypropylene transparent material

采用不同注塑成型方式对聚丙烯透明料雾度测试试样进行了制备,针对聚丙烯透明料雾度有影响的关键因素注塑压力、注塑速度、熔体温度、保压压力等进行了实验探究,确定了雾度试样制备最佳工艺参数为:注塑压力55.52MPa、注射速率40 mm/s、熔体温度200℃、模具温度40℃、保压压力48.58MPa。

In this study,different injection molding methods were adopted to prepare the test samples of polypropylene(PP)transparent material for the measurement of fog degree.The key factors affecting the fog degree of the transparent material,such as injection pressure,injection speed,melt temperature,and pressure holding pressure were investigated.The optimal process parameters for preparing the test samples for fog degree were determined to be an injection pressure of 55.52 MPa,an injection rate of 40 mm/s,a melt temperature of 200℃,a mold temperature of 40℃,and a holding pressure of 48.58 MPa.