Nano Cesium Tungstate Applied for Thermal Insulation Film

Nano cesium tungstate may be applied for producing transparent thermal insulation film. The obtained film is a new type of environmentally friendly heat insulation film so that it has been gradually used in building and automobile glass window. Therefore, the preparation of nano grain size cesium tungstate nanopowder has been paid more and more attention.

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Some experts used sodium tungstate and cesium carbonate as raw materials to synthesize cesium tungstate nano powder by citric acid under low temperature and hydrothermal conditions. And they analyzed the results of XRD and transmission spectra. Then, these experts found that the synthesized cesium tungstate has a hexagonal structure, and the film has good near-infrared shielding properties and photochromic properties. But, the reaction process of the method generally takes several days in the autoclave reaction. In other words, this producing method has the disadvantages of long reaction time, low production efficiency, high production costs and other shortcomings.

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