Cesium tungstate may be applied for preparing near infrared shielding material such as cesium tungstate nano heat insulation slurry and cesium tungstate nano heat insulating water-based coating for transparent heat insulating architectural glass. Cesium tungstate nano heat insulation slurry, coating and preparation method thereof, in percentage by weight, comprising the following steps:
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The solvent of 67-80%, the cesium tungstate nanopowder of 10-30% and the dispersing agent of 2-10%, are pre-dispersed under the action of stirring or ultrasonication, and then ground and dispersed to obtain cesium tungstate nano heat insulation slurry material. The nano heat insulating slurry of cesium tungstate is extremely stable with strong absorption of sunlight, ensuring high visible light transmission and effective control of solar radiation. In addition, the method is simple, the production cost is low. The method can be mass-produced. And the nano heat insulating water-based coating of cesium tungstate can be prepared simply and efficiently. Also, the coating has high visible light transmittance, high infrared and ultraviolet blocking rate, high hardness, strong adhesion and weather resistance.
