降低热塑性塑料热膨胀系数的研究进展

Research Progress of Lowing Thermal Expansion Coefficient of Thermoplastic Plastics

综述了国内外关于降低热塑性塑料热膨胀系数的主要方法,按添加物的种类分为:一般颗粒材料填充改性、空心玻璃微珠填充改性、负热膨胀系数材料填充改性、稀土氧化物填充改性、高热稳定性材料填充改性、橡胶共混改性、多种材料混杂复合改性等。对未来降低热塑性塑料热膨胀系数的发展方向进行了展望。

Main methods of lowing the thermal expansion coefficient of thermoplastic plastics at home and abroad were summarized. According to the types of additives the methods could he divided into the following categories ： general granular materials filling modification, hollow glass bead filling modification, materials with negative thermal expansion coefficient filling modification, rare earth oxide filling modification, high thermal stability materials filling modification, rubber blending modification, a variety of materials hybrid mixing modification and so on. The future development trend of lowing the thermal expansion coefficeint of thermoplastic plastics was prospected.