Nano Ammonium Metatungstate Applied for Infrared Thermal Insulation Nano Material

Nano ammonium metatungstate can be prepared into an aqueous solution, and mixed with an aqueous solution of cesium carbonate, and then subjected to heating, dispersing, grinding and other processes to obtain a infrared thermal insulation nano material --- cesium tungsten bronze heat-insulating film.

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http://www.ammonium-metatungstate.com/

As you may know, some thermal insulation films are prepared using a general transparent oxide conductive material such as antimony tin oxide (ATO) or indium tin oxide (ITO) as raw material. Such material has a plasma wavelength range of about 1000-2500nm. While the conductivity is too low, and the plasma wavelength is greater than 1000nm. So, some infrared wavelength between 800nm-1000nm will enter the room through the window glass. In other words, such films do not have high thermal insulation performance. Therefore, the field of heat insulating materials urgently needs a nano material that can block "heat" in the infrared short-wave range. Later, experts found that cesium-doped tungsten oxide, that is, cesium tungsten bronze, can block short-wave near-infrared rays, and the preparation of cesium tungsten bronze nanopowder requires the ammonium metatungstate raw material.

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