原位聚合聚氨酯/纳米二氧化钛复合材料的研究  

STUDY ON POLYURETHANE/NANO-TiO_2 COMPOSITES PREPARED BY IN-SITU POLYMERIZATION

作　　者：王明[1,2] 唐兴[1] 

机构地区：[1]西南大学化学化工学院,重庆400715 [2]四川大学高分子国家重点实验室,成都610065

出　　处：《工程塑料应用》2011年第5期20-24,共5页Engineering Plastics Application

基　　金：高分子材料工程国家重点实验室开放课题基金项目(KF200905);西南大学博士基金项目(SWU109024)

摘　　要：利用纳米TiO2表面丰富的羟基与二苯基甲烷二异氰酸酯(MD I)中的异氰酸根反应,制备了以纳米TiO2为交联点的原位聚合聚氨酯/纳米TiO2复合材料。通过傅立叶变换红外光谱、扫描电子显微镜和热重分析分别研究了未经表面处理纳米TiO2和酸处理纳米TiO2表面羟基含量的差异及其在聚氨酯中的分散状况,比较了它们作为无机交联点制备的复合材料的力学性能及热稳定性的差异。The abundant hydroxyl groups of titanium dioxide nanoparticle （ nana-TiO2 ） were used to react with isoeyanato of diphenylenethane diisoeyanate （MDI） , then polyurethane/nano-TiO2 composites with nano-TiO2 as crosslink were prepared by in-situ polymerization. The different of surface hydroxyl groups content, dispersibility in polyurethane of nanopartieles with acid modification and without acid modification were analyzied by infrared spectroscopy, scanning electron microscope and thermogravimetric analysis. The different of mechanical properties and thermal stability of the composites prepared based on nano-TiO2 as inorganic cmsslink with and without acid modification were also investigated respectively.

关 键 词：聚氨酯 纳米二氧化钛 复合材料 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]