Tungsten trioxide may be applied for the manufacture of nano-ceramic color master. And this type of color master can be applied in coating industry, which combines the best performance of WO3 in one. Furthermore, it is also has the characteristics of safety and environmental protection.
WO3 may be prepared by sol-coprecipitation method or chemical precipitation method.
Preparation of Tungsten Trioxide By Sol-coprecipitation Method
Sol-coprecipitation method is a kind of precipitation method. Tungsten trioxide powder with particle size of 3~9nm may be prepared by using WC16 and TiCl4 mixture as raw materials, adding ammonia water and surfactant to form W(OH)6 and Ti(OH)4, then by centrifugal separation and calcining.
Preparation of Tungsten Trioxide by Chemical Precipitation Method
Chemical precipitation method is a kind of precipitation method. Tungsten trioxide ceramic powder with uniform particle size may be obtained by using (NH4)10W12O41?5H2O as raw material to produce H2WO4, and then by dehydration and calcination.
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