硅烷偶联剂表面改性二氧化钛粒子超疏水性能研究

针对无机二氧化钛（TiO2）粒子在有机体系中的分散性问题，采用硅烷偶联剂KH-570对无机填料钛白粉（二氧化钛，TiO2）的表面进行有机化改性；并通过红外光谱（FT-IR）、接触角测试、沉降实验、扫描电子显微镜（SEM）等手段表征表面改性TiO2粒子的结构，测试其超疏水性能，分析超疏水表面形成的机理。结果表明，经KH-570表面改性的TiO2粒子的疏水性和分散性得到明显改善，当KH-570质量分数达到15%时，表面改性的TiO2涂层与水的静态接触角达152.5˚，表现出良好的超疏水性能。

Study on the Superhydrophobicity of Surface Modified TiO2 with Silane Coupling Agent

Titanium dioxide (TiO2) inorganic particles were surface modified by using silane coupling agent KH-570 to improve its dispersion in organic systems. The superhydrophobicity of surface modified TiO2 was characterized using FT-IR, contact angle, sedimentation tests, and SEM. And the form mechanism of the superhydrophobicity surface was also analyzed. The results showed that the hydrophobicity and dispersibility of the surface modified TiO2 particles with KH-570 were significantly improved, the surface modified TiO2 coating with KH-570 15 wt % showed good superhydrophobicity that the water static contact angle reached 152.5°.