【摘要】 以硅烷偶联剂对纳米TiO₂进行表面预处理,在此基础上以聚甲基丙烯酸（PMA）对其表面接枝包覆,后以马来酸酐接枝聚丙烯（PP-g-MAH）为载体,通过母料复合工艺制备了PP纳米复合材料。分析了处理后纳米TiO₂的结构并对其在PP中的分散情况及抗紫外老化性能进行了比较。结果表明：PMA在纳米TiO₂表面接枝率约为50％；与未处理TiO₂及硅烷处理样品相比,PMA接枝包覆使纳米TiO₂在PP中的分散均匀性及抗紫外老化性能均获得了改进。更多还原

【Abstract】 Nano-meter TiO₂ （nmTiO₂） was surface pretreated by using silane coupling agent,the treated nm- TiO₂ was grafted with PMA to prepare nmTiO₂-g-PMA by in-situ polymerization.The prepared nmTiO₂-g-PMA was used to the preparation of PP nano-meter composites by means of masterbateh compounding,in which PP-g-MAH was used as masterbateh matrix.The structure of the modified nmTiO₂ was analyzed and its dispersion status and UV aging resistance in PP were compared.The results showed the grafting ratio of PMA on nmTiO₂ was about 50%,and the dispersion status and UV aging resistance of nmTiO₂-g-PMA in PP were better than those of untreated nmTiO₂ and nmTiO₂-g-KH570.更多还原