微-纳米无机粒子改性聚丙烯材料的最新进展

Recent Development of Polypropylene Composites Modified with Micro-/Nano-Sized Inorganic Particles

综述了近年来微-纳米无机刚性粒子填充改性聚丙烯(PP)材料的最新进展,介绍了微米级、纳米级和微-纳米组合无机刚性粒子的添加对 PP 复合材料性能的影响。无机刚性粒子越细,越有利于 PP 材料的增强增韧;无机刚性粒子的表面改性处理对复合材料的微观结构和性能有重要影响。微米无机刚性粒子可提高 PP 材料的冲击强度与刚性,但强度会有所降低;均匀分散的无机纳米粒子同时起到增强增韧的双重作用;具有粒径级的组合粒子的填充改性优于单一无机粒子。

This paper reviews advances in the modification of PP-based composites with micro- and/or nano-sized inorganic rigid particles, with emphasis on the mechanical properties. A general conclusion is that the smaller the inorganic particles, the more favorable the composites are strengthened and toughened. The surface modification of inorganic particles has a critical influence on the interfaces of the composites, which in turn affect the rnicrostructures and properties remarkably. Micro-sized inorganic particles can improve the impact property and rigidity of the PP-based composites, but usually reduces the strength properties; on the other hand, nano-sized inorganic particles have the ability to enhance the strength, toughness, and modulus of the PP-based composites. The properties based on compounded fillers are better than those on a single filler.