纳米TiO_2表面接枝PAN及其对PP抗紫外老化性能的影响  

Nano TiO_2 Grafted with Polyacrylonitrile and Its Effects on Anti UV Aging Properties of PP

作　　者：马立群[1] 孙兆洋[1] 何子健[1] 纪鹏[1] 王雅珍[1] 

机构地区：[1]齐齐哈尔大学材料科学与工程学院,黑龙江齐齐哈尔161006

出　　处：《工程塑料应用》2014年第6期69-73,共5页Engineering Plastics Application

基　　金：国家自然科学基金资助项目(21376127)

摘　　要：采用细微乳液聚合法制备了基于共价键结合的纳米TiO2表面接枝聚丙烯腈(PAN)(纳米TiO2-g-PAN)复合抗紫外老化剂,将其与聚丙烯(PP)共混制备了PP/纳米TiO2-g-PAN复合材料。研究了纳米TiO2-g-PAN在PP中的分散情况及PP/纳米TiO2-g-PAN复合材料的抗紫外老化性能。傅立叶变换红外光谱、热失重、扫描电子显微镜和力学性能测试分析表明,PAN成功接枝到纳米TiO2表面,提高了纳米TiO2与PP的相容性及PP/纳米TiO2-gPAN复合材料的热稳定性能、力学性能和抗紫外老化性能。当纳米TiO2-g-PAN与PP配比为0.05时,PP/TiO2-gPAN复合材料的拉伸强度、冲击强度、拉伸强度保持率和冲击强度保持率分别为38.66 MPa,691.75 kJ/m2,63.49%和58.42%,综合力学性能最佳。Nano TiO2 grafted with polyacrylonitrile（PAN）（nano TiO2-g-PAN） which is based on the covalent binding was prepared by minor emulsion polymerization method, then nano TiO2-g-PAN was mixed with polypropylene （PP） to prepare PP / nano TiO2-g-PAN composite. The dispersion of nano TiO2-g-PAN in PP and anti UV aging properties of the composites were studied. The results of Fourier transform infrared, thermogravimetry, scanning electron microscope and mechanical properties analysis show that PAN is successfuUy attached onto the surface of nano TiO2, and the compatibility of PP and nano TiOz is improved. The thermal stabilities, the mechanical properties and anti ultraviolet ageing properties of the composites are also improved. The comprehensive mechanical properties reach the best when ratio of nano TiO2-g-PAN and PP is 0.05, and the tensile strength, impact strength, remain ratios of tensile strength and impact strength are 38.66 MPa, 691.75 kJ/m^2, 63.49% and 58.42% respectively.

关 键 词：纳米TIO2 聚丙烯腈 聚丙烯 抗紫外老化 

分 类 号：TQ317.6[化学工程—高聚物工业]