Cesium Doped Tungsten Oxide Nanopowder Applied for Near Infrared Shielding Material

Cesium doped tungsten oxide nanopowder may be applied for producing near infrared shielding material such as thermal insulation film, thermal insulation coating and thermal insulation dispersion. And these thermal insulation materials are widely used in the fields of building glass and car glass due to their good thermal insulation properties. Therefore, experts are paying more and more attention to this kind of environmentally friendly heat insulation materials. They proposed the following preparation method of cesium doped tungsten oxide nanopowder:

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1.0 The raw material tungsten salt (sodium tungstate) and the cesium salt (cesium nitrate) are respectively dissolved in a solvent, and the tungsten salt solution is configured into a tungstic acid solution through an exchange resin;

2.0 The tungstic acid solution, the cesium salt solution and the reaction solvent are mixed and continuously stirred for 1-3h to obtain a hydrothermal reaction precursor liquid;

3.0 The precursor liquid is placed in a closed hydrothermal reaction kettle with a stirring device, and the reaction is performed at 180-300°C for 5-20h;

4.0 The hydrothermal reaction precipitate is repeatedly washed, dried, pulverized, and calcined to obtain cesium doped tungsten oxide nano powder.

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