
Nano particle size violet tungsten oxide for thermal insulation dispersion liquid may be prepared by using ammonium metatungstate (AMT), ammonium nitrate and an auxiliary agent as raw materials. These raw materials are mixed into solutions by a certain ratio. And then the obtained solution is heated, evaporated, and performed redox reaction to obtain violet tungsten oxide. The obtained powder is nano needle-shaped violet tungsten oxide powder with large specific surface area, large surface activity and other excellent performance.The preparation of…