纳米TiO_2/白氟聚氨酯复合涂层的制备及抗老化性能研究  

Preparation and Anti-aging Performance of the Ruitile TiO_2/Fluorocarbon Nano-composite Coatings

作　　者：管静[1] 梁红波[1] 郝名扬[1] 陈雅铭[1] 熊磊[1] 钟卫[1] 

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《表面技术》2009年第1期30-32,共3页Surface Technology

摘　　要：为了改善纳米TiO2的分散性以及增强聚氨酯涂层的抗老化性能,在硅烷偶联剂改性纳米TiO2的基础上,接枝上甲基丙烯酸甲酯与丙烯酸丁酯的共聚物,制得微胶囊纳米TiO2粉体,并借助于FT-IR、SEM表征复合粒子结构和形貌。用改性后的金红石型纳米TiO2制备TiO2/白氟聚氨酯复合涂层,利用人工加速老化的方法,在老化前后不同阶段测试纳米复合涂层的基本性能。试验结果表明:TiO2的添加能提高复合涂层的抗老化性能,且当TiO2添加量为3%时,其基本性能最佳,抗老化性能最好。In order to improve the dispersion of nano-TiO2 and increase the anti-aging properties of the polyurethane coating, in this study, the ruitile TiO2 nanoparticles were first modified with silane coupling agent and then grafted with methyl methacrylate and butyl acrylate copolymer by the microcapsule method. The chemical structure and the dispersion properties of the modified nano-TiO2 were characterized by fourier transform infrared spectra （ PT-IR ） and scanning electron microscopy （ SEM ） respectively. Modified nano-TiO2 was used to prepare TiO2/fluorocarbon nanocomposite coatings. Artificial accelerated aging test was used to measure the resistant aging performance of coating by testing the fundamental properties of the nanocompositc coatings in the different aging stages. The results indicate that the resistant aging performance of the composite coating is enhanced by addition of rutile TiO2, moreover, the sample with 3% TiO2 addition has the best properties over all samples.

关 键 词：纳米复合涂料 TIO2 抗老化 聚氨酯涂层 

分 类 号：TQ630.7[化学工程—精细化工]