【摘要】 介绍了滑石粉在塑料改性中的应用以及滑石粉的加入对塑料性能的影响;通过分析塑件成型收缩机理、原因,从材料特性、模具结构、注塑工艺条件三个方面来阐述对塑料成型收缩率的影响因素。最后,将不同用量滑石粉(Talc)添加到聚丙烯(PP)中,结合CAE模拟技术,研究了滑石粉(Talc)对聚丙烯复合材料收缩率的变化规律。研究表明:随着滑石粉的质量分数越来越大,制品收缩率降低,最佳配比为25%,收缩率为2.1036%,低于未添加滑石粉的3.3871%。滑石粉填充改性PP有利于提高产品品质。更多还原

【Abstract】 It describes the impact of talcum powder in plastic modification of the application as well as the addition of talc plastic properties;plastic mold shrinkage analyzes the mechanism of reasons,from the material properties,mold structure,injection molding process conditions to elaborate on three aspects of plastic factors molding shrinkage. Finally,the different amount of talc(Talc)adds to polypropylene(PP),the combination of CAE simulation technique studies the talc(Talc)variation of the polypropylene composite material shrinkage.Studies show that:with the increasing mass fraction of talc,shrinkage rate decreases,the best ratio is of 25%,a shrinkage is of 2.1036%,lower than 3.3871% without adding talc.Talc Filled PP helps improve product quality.更多还原