Cesium Tungsten Bronze: Transparent Heat Insulation Material

Cesium tungsten bronze, or CsxWO3, is often used to produce transparent heat insulation material for applying to building or automotive glasses to obtain energy-saving windows, thereby reducing energy consumption. As energy saving and emission reduction have become the theme of today's social development, it is particularly important to study on new types of transparent heat insulation material for energy saving windows. For example, solve the problem - how to prepare CsxWO3 nano powder efficiently and cost-effectively?

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A Preparation Method of Cesium Tungsten Bronze for Transparent Heat Insulation Material

Ammonium tungstate, ammonium paratungstate and ammonium metatungstate serve as tungsten sources; cesium hydroxide, cesium carbonate, cesium oxalate and cesium citrate serve as cesium sources; urea, PVP, PVA, oxalic acid and ammonium oxalate serve as dispersing agents; the materials are dissolved in water respectively and sequentially and evenly mixed with at least two of organic solvents containing alcohol, ether and ester functional groups, concentration and drying are conducted to obtain the powder, the powder is calcined to obtain blue powder, the blue powder is stirred in a high-pressure kettle under the hydrothermal condition at 120-250 °C, and then the blue powder is filtered, dried and smashed to obtain the blue cesium tungsten bronze nano powder. The cesium tungsten bronze nanopowder produced through the method does not need to be washed, is hardly agglomerated and is easily dispersed into nano particles. The production efficiency is high, the process is relatively safe and environmentally friendly. The cost is low, and the industrial production is convenient.

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