Silica sol is a dispersion of nano-sized silica particles in water or solvents. Due to the high content of water and hydroxyl groups in SiO2 in silica sol, silica sol can also be expressed as mSiO2. nH2O. There are different ways to prepare silica sol. Common methods include ion exchange, one-step hydrolysis of silicon powder, silane hydrolysis, etc.

Purpose:Silica sol is used as a binder for various refractory materials, with strong adhesion and high temperature resistance (1500-1600C); Silica sol is used in the coating industry, which can make the coating firm, and also has functions such as anti pollution, dustproof, anti-aging, and fireproof; Silica sol is used for precision casting of thin shells, which can increase the strength of the shell shape and improve the casting smoothness. Replacing ethyl silicate molding can reduce costs and improve operating conditions; Silica sol has a high specific surface area and can be used for catalyst manufacturing and catalyst support; Silica sol is used in the paper industry as a glass paper anti sticking agent, pre-treatment agent for photographic paper, anti slip agent for cement bags, etc; Silica sol is used as a sizing agent in the textile industry. It is combined with oil agents to improve the spinnability of wool and rabbit hair, reduce breakage, prevent flying flowers, improve product yield, and increase economic benefits; Silica sol is used as a processing agent for silicon steel sheets, a dispersant for cathode ray tubes, and an anti slip agent for floor wax.