Violet tungsten oxide nano powder is a kind of smart material with high thermal insulating performance to produce transparent heat insulation glass. And the raw material nano particle size violet tungsten oxide is presented on the building glass in the form of a transparent heat-insulating film. According to experts, nano grain size violet tungsten oxide can be prepared by sol-gel method.
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So, what is the sol-gel process? In materials science, the sol–gel method is a method for producing solid materials from small molecules. The sol-gel method was first used in the field of inorganic material to prepare glass, ceramics and other materials. Later, people began to use this method to prepare inorganic nano film. The basic principle of this preparation method is to obtain a hydrolysis product by a hydrolysis reaction between reactants in a precursor at a specific concentration ratio, and these products further undergo a polycondensation reaction, simultaneously generating water and a corresponding alcohol, and obtaining a gel after passing through aging and drying to obtain the target product. And different reaction products can be obtained by selection of different processes.
