Cesium Doped Tungsten Oxide Applied for Transparent Thermal Insulation Nanopowder

Cesium doped tungsten oxide may be applied for producing transparent thermal insulation nanopowder. In fact, the Cs doped tungsten oxide powder is a deep blue nanopowder with purity higher than 99.9%. When the Cs doped tungsten oxide powder is applied in the production of thermal insulation film, thermal insulation dispersion and thermal insulation coating, the products obtained are transparent. And nowadays Cs doped tungsten oxide powder is gradually known for its promotion of the application of thermal insulation products. Therefore, its preparation is even more important. In this regard, experts have proposed a method for preparing Cs doped tungsten oxide powder, the steps are as follows:

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Step one: according to the Cs/W molar ratio 1: (1.5 ~ 2.8), weigh the cesium salt, tungsten salt, add a chelating agent and an alcohol reagent, and react at 170°C for 3h;

Step two: the obtained mixture is charged into a pressure capacity bomb, and reacted at 260-270°C for 5-8 hours;

Step three: the reactant is subjected to alcohol washing, centrifugation, and vacuum drying at 80°C to obtain Cs doped tungsten oxide powder with complete crystallinity.

The preparation method can save the reaction raw materials, thereby saving the preparation cost. And the preparation cycle is short, which is favorable for industrial production.

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