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。
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.
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