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.

As an important raw material, nano ammonium metatungstate is more and more widely used in the production of infrared ultraviolet shielding material such as cesium tungsten bronze thermal insulation film. According to experts, the heat-insulating material obtained can shield infrared rays and ultraviolet rays, which is a new transparent heat insulating material. And such material is environmentally friendly.

Nano ammonium metatungstate can be used as a raw material for preparing a cesium tungsten bronze transparent thermal insulation material such as transparent heat insulating film. Some experts have prepared a thermal insulation material with a molar ratio of Cs:W:Cl=0.33:1:0.03, and produced a transparent insulating film using the prepared powder as raw material, for applying in architectural glass. The specific experimental steps are as follows:

The reason why nano ammonium metatungstate is called transparent thermal insulation nanopowder is because the final heat insulating material of cesium tungsten bronze nano particles prepared by such raw material has high transparency, that is, high visible light transmittance (higher than 70%). And these thermal insulating materials also have a lower infrared light transmittance, i.e., a higher infrared blocking rate. In this regard, let's take a look at the calculation range of some parameters.