Cesium tungstate nanopowder has attracted much attention due to infrared thermal insulation nano material. It is because nano grain size cesium tungstate powder can be used to prepare the new environmentally-friendly heat insulation material with excellent near-infrared shielding property, which is widely used in architectural glass. Therefore, the preparation of nano cesium tungstate is very important. In this regard, the expert proposed a method for preparing nano cesium tungstate powder, which comprises the following steps:
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1.0 The reaction amount of ammonium paratungstate as a tungsten raw material and cesium nitrate as a raw material of cesium are dissolved in solvent ethanol, and the solution is dried to obtain powder, and then the obtained powder is further pulverized to obtain a mixed powder of tungsten and cesium;
2.0 The tungsten and cesium mixed powder was placed in a closed reaction vessel with stirring, and a diethylene glycol as a reaction solvent was added thereto. The reaction was undergoing at 180°C for 4 hours by stirring. The mass of the reaction solvent was 1.2 times the mass of the mixed powder of tungsten and cesium;
3.0 The reaction product in step 2.0 is separated, washed with deionized water or ethanol, followed by drying, and then pulverizing by a jet mill to obtain nano cesium tungstate. Wherein, the air pressure of the air bag of the crushing chamber was 0.9MPa, and the speed of the classifier of the air jet mill was set to 1300r/min.
