Nano ammonium metatungstate has been widely used in the production of near-infrared shielding material. And the obtained heat insulation material is applied to architectural smart windows. In this process, ammonium metatungstate is first used to prepare nano tungsten oxide aqueous solution. The prepared tungsten oxide nano aqueous solution has good stability. And the nano tungsten oxide has small particle size. And then the solution is used to prepare heat insulation material.

Nano ammonium metatungstate has strong short-wave near-infrared absorption properties so that it can be used to prepare cesium tungsten bronze nanoparticles, and the obtained nano functional particles can be used to prepare a transparent thermal insulation paper for building glass. Experts said the obtained thin "paper" is actually a layer of thermal insulation film that inherits the characteristics of ammonium metatungstate. In other words, such film has an infrared shielding property that changes with changes in light intensity.

Nano ammonium metatungstate can be used as a raw material for preparing a heat insulating material with a molar ratio of Cs:W:Cl=0.33:1:0.05, and a new environmentally-friendly thermal insulation film is prepared by using the thermal insulating material as raw material. Specifically, the preparation processes are as follows :

Nano ammonium metatungstate is an indirect raw material for preparing ceramic microsphere. Ammonium metatungstate is used to prepare cesium tungsten bronze nanoparticles, and the obtained cesium tungsten bronze is the direct raw material for producing thermal insulating ceramic particles. In any case, these new heat insulation particles will be used to prepare building heat insulation films. One of the important raw materials, cesium tungsten bronze nanoparticles, that is, cesium tungsten bronze nanopowder. So, what are the chemical preparation methods for nanopowder?

Nano ammonium metatungstate is a raw material for preparing thermal insulation masterbatch of nano cesium tungsten bronze particles. Specifically, cesium tungsten bronze nanoparticles are prepared using ammonium metatungstate and cesium carbonate as raw materials. And then the obtained nano functional particles of cesium tungsten bronze are used to prepare masterbatch. And finally these blue heat insulating particles are applied to prepare building thermal insulation film.

Nano ammonium metatungstate is one of the important raw materials for preparing near infrared shielding material such as thermal insulation film of cesium tungsten bronze nanoparticles. According to experts, ammonium metatungstate powder is a near-infrared short-wave shielding nano material, which can be used together with cesium carbonate, cesium nitrate or cesium hydroxide to prepare cesium tungsten bronze nanopowder with deep blue color. And the obtained cesium tungsten bronze nano particles are used for the production of thermal insulation film with excellent optical property.

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.