Tungsten Oxide Nanoparticles Applied for Thermal Insulation Paper

Tungsten oxide nanoparticles may be used to prepare a transparent thermal insulation paper, that is, a heat insulation film, and then be applied to a building glass door, glass window or a car window for heat insulation. Besides, nano tungsten oxide can also be used to prepare electrochromic windows, that is, smart windows, which can also play the role of heat insulation and energy conservation.

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So, what the optical performance of electrochromic materials relates? The optical properties of electrochromic materials are related to the quantity of electric charge injected. The injection or extraction of electric charge in the electrochromic material can be conveniently realized by the change of the external voltage or current polarity. The magnitude of the voltage or the current directly determines the amount of electric charge injected or extracted. So, by continuously adjusting the external voltage or current, the degree of coloration of the electrochromic material can be continuously controlled. But, the injected electric charge should not be too much. Otherwise it will affect the electrochromic life of the material.

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