阐述了预测聚丙烯(PP)/无机粒子复合材料弹性模量的复合法则、Eistein方程及其修正、Kerner方程、Liang方程。从结构因素方面分析了弹性模量的影响因素。分析表明:无机粒子的粒径越小、分布越合理,其填充PP复合材料的弹性模量越大;与球形、方形等其它粒子相比,长径比较大的薄片状无机粒子具有更强的增强复合材料弹性模量的能力;复合材料的弹性模量随无机粒子含量的增加而提高;提高无机粒子-PP树脂的界面黏结强度以及改善无机粒子在树脂中的分散状态可以提高复合材料的弹性模量。最后指出,影响因素的定量表征和多因素分析是今后的主要研究方向。
The composite rule, Eisten equation and its correction model, Kerner equation and Liang equation for predicting elastic modulus of inorganic particle filled polypropylene(PP) composites are reviewed. The influencing factors of composites structure on the elastic modulus of inorganic particle filled PP composite are analyzed. The resuits indicate that the particle with small size and reasonable size distribution can improve the elastic modulus of inorganic particle filled PP composite, the laminar inorganic particle with big aspect ratio can improve the elastic modulus better than that of the other particles with small aspect ratio. The elastic modulus increased with the increasing volume fraction of inorganic particle can be improved by enhancing the interface interaction between inorganic particle and PP resin and improving the dispersion of inorganic particle in the PP resin. Finally, it is pointed out that quantitative characterazation of influencing factors and multiple factor analysis are the luther research directions.