Tungsten oxide nanoparticles for building glass energy saving coating can be prepared by solvothermal method. For example, experts adopted this method to prepare nano particle size tungsten oxide to study the effect of solution concentration on the morphology of nano tungsten oxide when isopropanol was used as the alcohol solvent. Wherein, the reaction temperature was 180°C and the reaction time was 12h. The figure below shows the SEM image of tungsten oxide nanopowder at different solution concentrations.

Tungsten oxide nanoparticles may be used to prepare a new type of heat insulation film for applying to automobiles, which has surface scratch resistance, high heat insulation and UV resistance to shield more than 99% ultraviolet rays, thereby reducing fuel and improving human comfort. And such film has good light transmittance to ensure that the owner's vision is clear.

Tungsten oxide nanoparticles may turn a common window glass into a heat insulating window glass. Specifically, nano particle size tungsten oxide is prepared into a heat insulating film or a heat insulating coating, and then attached to or coated on the glass of vehicle to obtain a thermal insulating glass. In terms of application, this new type of thermal insulation glass can significantly improve the driving environment of the car, while reducing the energy consumption of the air conditioner, thereby achieving energy saving effects.

Tungsten oxide nanoparticles have good near-infrared absorption properties, that is, they can play the role of thermal insulation and achieve the purpose of energy conservation, so they can be used to obtain thermal insulating glass with high transparency and high UV resistance, in form of thermal insulation film or thermal insulation coating. And therefore, you can “see” them in architectural glass, automobile glass, and even airplane porthole.

Tungsten oxide nanoparticles for infrared ultraviolet shielding material can be obtained by a solvothermal method using ethanol as an alcohol solvent, a molar concentration of 15mM, a reaction time of 24h at different temperatures (160°C, 180°C, and 200°C). SEM of tungsten oxide nano particles at different temperatures using ethanol as alcohol solvent is shown below.

Tungsten oxide nanoparticles for transparent thermal insulation material can be prepared by a solvothermal method. For example, some experts studied the effect of solution concentration on the morphology of nano tungsten oxide produced by solvothermal method using ethanol as the alcohol solvent. Wherein, the temperature was 180°C, and the reaction time was 24h. SEM of tungsten oxide nano particles at different solution concentration using ethanol as alcohol solvent is shown as below.

Tungsten oxide nanoparticles can be said to be a type of transparent thermal insulation nanopowder. That is because the heat insulating materials produced by using tungsten oxide as raw material has high transparency. So, how tungsten oxide raw material can be prepared? What effect does the reaction time have on the prepared tungsten oxide phase?

Tungsten oxide nanoparticles can be prepared by a solvothermal method. Specifically, some experts prepared WO3 nano particles by solvothermal method under the conditions of ethanol as solvent, reaction temperature of 180°C, and reaction time of 1h, 6h. And they studied the influence of reaction time on the morphology of the prepared tungsten oxide. The following figure shows the SEM of tungsten oxide nanoparticles at different times using ethanol as alcohol solvent, wherein, the reaction times of (a) and (b) were 1h and 6h, respectively.

Tungsten oxide nanoparticles can be firstly prepared into an aqueous dispersion, and then be used for preparing a thermal insulation coating, and finally be applied to buildings or automobiles for heat insulation, heat preservation and energy conservation. Wherein, the dispersion is a high-performance heat insulation dispersion which processes the nano particle size tungsten oxide through electronic matching, grinding, homogenization, membrane filtration and other technologies.

Tungsten oxide nanoparticles may be applied for preparing a near-infrared shielding material such as thermal insulation dispersion, thermal insulation masterbatch, thermal insulation film, thermal insulation coating, and heat insulating glass. Therefore, these heat insulating materials may be applied to architectural glass curtain walls or large area glass windows.