PP/纳米CaCO_3复合材料的紫外光老化行为  

UV Photo-Oxidative Degradation of PP/Nano-CaCO_3 Composites

作　　者：王玉海[1] 章自寿[1] 陶友季[1,2] 麦堪成[1] 

机构地区：[1]教育部聚合物基复合材料及功能材料重点实验室,新型聚合物材料设计合成与应用广东省高校重点实验室,中山大学化学学院材料科学研究所,广东广州510275 [2]中国电器科学研究院工业产品环境适应性国家重点实验室,广东广州510663

出　　处：《高分子材料科学与工程》2011年第5期96-99,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(50573094,50873115);中国电器科学研究院工业产品环境适应性国家重点实验室开放基金

摘　　要：用FT-IR研究了紫外光老化聚丙烯(PP)/纳米CaCO3和相容剂改性PP/纳米CaCO3复合材料的微观结构变化,结果表明,纳米CaCO3和相容剂加入加快了PP紫外光氧化降解,但对PP光氧化降解机理无影响。纳米CaCO3促进PP光氧化降解作用较相容剂的大。纳米CaCO3加快PP紫外光氧化降解主要归结于纳米CaCO3加入形成大量界面的影响。而相容剂促进PP光氧化降解,主要归结于相容剂对光稳定剂的吸附作用,相容剂极性越大,吸附作用越强。The UV photo-oxidative degradation of PP/nano-CaCO3 composites,PP/compatibilizers and compatibilizers modified PP/nano-CaCO3 composites were investigated by FT-IR.The results indicate that addition of nano-CaCO3 and compatibilizers accelerates the UV photo-oxidative degradation,but does not influenced the mechanism of the UV photo-oxidative degradation.The acceleration in the UV photo-oxidative degradation by adding of nano-CaCO3 is more significant than that of compatibilizer and is attributed to the formation of a large amount of interface between PP and nano-CaCO3,which is easy to UV photo-oxidative degradation.The acceleration in the UV photo-oxidative degradation by adding of compatibilizer is mainly attributed to the absorption of antioxidant by compatibilizer.

关 键 词：聚丙烯 纳米复合材料 紫外光老化 

分 类 号：TB383[一般工业技术—材料科学与工程]