Study of reparation and properties for environmental function negative ion coatings

Silica-coated negative ion compound powder body used in the coatings with environmental function were prepared by the sol-gel method to deposit silica onto the surface of anatase titania nanometer particles in order to enhance the dispersion stability of negative ion compound powder body. The negative ion compound powder body showed greater dispersion stability. With the different recruitment, negative ion functional coatings developed can produce the biggest density. The results show that the negative ion powder physical ability stable highly effective production negative ion, the quantity of negative ion has the close relationship with the powder body quality, the measuring temperature and the measuring distance.