Cesium tungsten oxide powder may be applied for the preparation of a new type of thermal insulation film, which is a transparent and environmentally friendly heat insulation film for building glass including glass window, glass door, and so on. Previously, the method for preparing cesium tungsten oxide has technical problems such as complicated process and high cost. In recent years, some experts discovered that the following preparation method of cesium tungsten oxide can overcome the above technical problems.
Preparation Method of Cesium Tungsten Oxide
1.0 The tungstate solution is exchanged with cationic resin to obtain tungstic acid sol;
2.0 Add citric acid solution and cesium carbonate solution to the tungstic acid sol, and then performing a mixture treatment to obtain precursor liquid for hydrothermal reaction;
3.0 The hydrothermal reaction precursor liquid is hydrothermally reacted at a temperature of 160-180°C and a pressure of 0.8-1MPa. After the reaction is completed, the washing treatment and the drying treatment are carried out to obtain cesium tungsten oxide.
Experts also found that the dingal film of cesium tungsten oxide has excellent shielding performance in infrared, especially near-infrared, and the production cost is lower than the original method.
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