Nano cesium tungstate may be used to prepare infrared ultraviolet shielding material such as cesium tungstate nano heat insulation slurry. The obtained nano heat-insulating slurry of cesium tungstate nanopowder is extremely stable with strong absorption of sunlight. And the slurry can ensure high visible light transmission and effective control of solar radiation.
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And the preparation of cesium tungstate nano heat insulation slurry is focused on. In percentage by weight, the process comprises the following steps: solvent (deionized water) of 67-80%, cesium tungstate nano powder of 10-30% and dispersant of 2-10%, pre-dispersed by stirring or ultrasonication, and then ground and dispersed to obtain cesium tungstate nano heat insulation slurry. After pre-dispersion, the pre-dispersion product can be placed in a grinder or a sander for grinding and dispersing to obtain cesium tungstate nano heat insulation slurry. When grinding and dispersing, the filling volume of the grinding ball is controlled to be 70-90%, and the grinding time is 5-10h. And the obtained cesium tungstate nano heat insulation slurry has an average particle diameter of 10nm or less and a solid content of 10-30% by weight.
