Cesium Tungstate Powder Applied for Heat Insulation Coating

Cesium tungstate powder may be applied for preparing heat insulation coating. And in order to reduce the particle size of cesium tungstate, some experts have proposed that use ammonium paratungstate and cesium formate as raw materials, and plasma as a heat source for rapid high temperature thermal decomposition solid phase reaction. Also, to improve the infrared absorption property of nano grain size cesium tungstate, hydrogen is added as the gas source.

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The expert observed the product of cesium tungstate particles by transmission electron microscopy (TEM) and found that the particle size of the powder was several tens of nanometers. However, experts say that this method is essentially the same as the high temperature reducing gas treatment to obtain cesium tungstate powder, so there are similar disadvantages, such as large particles. At the same time, the process also has the disadvantages of special production equipment and low production efficiency, which inevitably leads to high powder production cost and weak market competitiveness. And thus experts said that the further research on the relevant preparation methods of cesium tungstate is needed.

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