乙二醇表面改性纳米二氧化钛的制备及其对水性聚氨酯的改性  

Preparation of nano titanium dioxide surface-modified with ethylene glycol and its use in modification of waterborne polyurethane

作　　者：潘卉[1] 曹刘琴[1] 赵甜[2] 吴志申[2] 张治军[2] 

机构地区：[1]河南大学化学化工学院,河南开封475004 [2]河南大学特种功能材料教育部重点实验室,河南开封475004

出　　处：《化学研究》2014年第5期509-515,共7页Chemical Research

基　　金：河南省自然科学基金(122300413205)

摘　　要：以乙二醇(EG)和钛酸四丁酯(TBOT)为原料,采用原位表面修饰方法成功制备了乙二醇表面改性纳米TiO2(EG-TiO2);利用傅立叶红外光谱仪、X射线衍射仪、透射电子显微镜表征了其结构,采用热重分析仪测定了其热稳定性.结果表明,经表面修饰的纳米二氧化钛在水性聚氨酯皮革涂饰剂(WPU)基体中分散良好;将EG-TiO2添加到WPU中能显著提高其抗紫外线性能、热稳定性及耐磨性能.TiO 2 nanoparticles surface-modified with ethylene glycol （EG）were successfully pre-pared by in situ surface modification method.The structure of as-synthesized product was char-acterized by Fourier transform infrared spectrometry,X-ray diffraction and transmission elec-tron microscopy,while its thermal stability was examined by gravimetric analysis.Results in-dicate that TiO 2 nanoparticles surface-modified by EG can be dispersed well in waterborne pol-yurethane （WPU）.Besides,as-synthesized surface-modified TiO 2 nanoparticles at a moderate dosage are able to significantly improve the ultraviolet resistance,thermal stability and abra-sion resistance of WPU.

关 键 词：乙二醇 表面修饰 纳米二氧化钛 制备 水性聚氨酯 改性 

分 类 号：TB321[一般工业技术—材料科学与工程]