不同紫外光对无机纳米材料改性聚丙烯老化行为的影响  

Effects of Different UV on Aging Behavior of PP Modified with Inorganic Nanomaterials

作　　者：周念庭 周豪[2] 卫茂平 朱军[2] 买买提江.依米提 

机构地区：[1]石油天然气精细化工教育部和自治区重点实验室新疆大学化学化工学院,新疆乌鲁木齐830046 [2]中国石油独山子石化公司研究院,新疆独山子833600

出　　处：《中国塑料》2016年第6期28-33,共6页China Plastics

基　　金：国家自然科学基金项目(21474082);国家级大学生创新项目(201410755017)

摘　　要：将无机纳米材料与聚丙烯(PP)熔融共混制备耐候性PP复合材料。采用透射电子显微镜、凝胶渗透色谱、红外光谱以及力学性能测试等手段研究了纳米二氧化钛(nano-TiO_2)、纳米二氧化硅(nano-SiO_2)、纳米氧化锌(nanoZnO)等无机材料对PP抗紫外老化性的影响。结果表明,无机纳米材料的含量为0.3%时,分散性最好,可促使PP力学性能提高;PP/nano-TiO_2的抗紫外线老化性能最好,与纯PP相比,老化144 h后断裂伸长率保持率在波长为340 nm和313 nm紫外光源中分别提高了31.5%和11.8%。TEM, GPC, IR, and mechanical property tests were carried out to study the effect of inorganic nanomaterials such as TiO2, SiO2, ZnO on the UV aging resistance of PP. It was found that the best dispersion was achieved when the loading of inorganic particles was 0.3 wt%, at which the mechanical properties of PP was obviously enhanced and the anti-UV aging behavior of PP/nano-TiO2 was the best. Compared with neat PP, the elongation at break of the composite after 144 h of aging under 340 nm and 313 nm of UV light was increased by 31.5% and 11, 8 %, respectively.

关 键 词：聚丙烯 无机纳米材料 紫外光老化 断裂伸长率 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]