聚丙烯材料耐候性能研究进展

综述了聚丙烯材料耐候性能的影响因素，主要包括主链结构、残留催化剂及外部环境中的光、热、氧及水汽等；系统分析了聚丙烯的老化机理，主要有热氧老化和光氧老化，两者都与自由基链式反应有关；最后概括了改善聚丙烯材料耐候性能的方法，主要是添加有机助剂、无机纳米材料和选择合理的加工方式。

Development Progress in Weatherability of Polypropylene Materials

The recent development of weatherability of polypropylene （PP） materials was reviewed. The factors affecting weatherability of PP were discussed, including main chain structure, residual catalyst and external environ- ment. The aging mechanisms of PP such as thermal-oxidative aging and photooxidation aging were analyzed in de- tail. The two aging mechanisms were related to free radical chain reaction. And, this paper generalizes improving weatherability of PP by means of adding organic assistant, adding inorganic nano-materials and selecting suitable processing method.