Nano tungsten oxide may be used to prepare a building glass energy saving coating, which may provide a cost-effective solution for building energy saving. Also, it may solve the problem of heat insulation of curtain wall glasses, glass windows and doors. At the same time, this new type of thermal insulation coating may also provides favorable protection for heat preservation in the cold northern regions of China in winter.
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Energy-saving glass coating of tungsten oxide can be directly applied to ordinary glass, which has a good thermal insulation effect, visible light transmittance of higher than 70% and the ultraviolet isolation rate of more than 99%. It is studied that in the summer, such heat insulation coating can directly reduce the indoor temperature of 2-5°C, and in the winter, it can inhibit the glass from fogging. Also, as the coating film has high hardness, it will not affect the daily glass cleaning. Besides, the coating film has long life, which is 2-3 times than that of thermal insulation film. And it is flame retardant to meet high security requirements.
