Process Optimization and Performance of Rutile TiO_2 Coated with ZrO_2/SiO_2

The rutile titanium dioxide coated with Zr O2-Si O2 was prepared by a sol-gel method. The effects of serum concentration, dosage of dispersant and content of Zr O2-Si O2 on the process and performance of rutile titanium dioxide coated with Zr O2-Si O2 were investigated. The optimum condition for the process of the rutile titanium dioxide coated with Zr O2-Si O2 was obtained. The mechanism for coating was analyzed by Nano-ZS granulometry, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy and energy dispersive spectroscopy, respectively. The results indicate that a uniform Zr O2 and Si O2 film on the surface of the rutile titanium dioxide is formed. The light loss rate, oil absorption and covering power of the coated rutile titanium dioxide powder decrease, and the whiteness value increases. Also, the film formation is due to the chemical bonds of Zr-O-Ti and Si-O-Zr on the rutile titanium dioxide surface.