铝锆有机金属偶联剂对超微二氧化钛表面的改性

利用铝锆有机金属偶联剂对超微二氧化钛粉体进行表面改性。讨论了改性前后超微二氧化钛的润湿性、沉降体积等表面性质的变化。结果表明：改性的超微二氧化钛与水的接触角增大，在有机介质中分散性提高。红外光谱和能谱分析表明，在超微二氧化钛粉体表面接枝上了铝锆有机基团；通过扫描电镜可看出经过改性后的超微二氧化钛分散性得到改善。

Surface Modification of Ultrafine TiO2 with Aluminium Zirconium Organic Metal Coupling Agent

The surface of ultrafine TiO2 is treated with aluminium zirconium organic metal coupling agent. The characteristics of the surface of the ultrafine TiO2 such as wetability, the sediment volume before and after modification are discussed. The result shows that the contact angle is increased with water remarkably, improving its dispersibility in organic medium. The FT - IR and the energy spectrum tests confirm that aluminium zirconium organic metal coupling agent has been grafted onto the surface of TiO2 and SEM test shows better dispersion of ultrafine TiO2 after modification.