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Violet tungsten oxide powder may be used to produce nano-ceramic dispersion solution for applying in building heat insulation film or car film. Violet tungsten oxide (W18O49/WO2.72) is one of tungsten oxides. The other three kinds of tungsten oxides are yellow tungsten oxide (WO3), blue tungsten oxide (W20O58/WO2.90) and tungsten dioxide (WO2). All of the above four kinds of tungsten oxides can be used as raw materials for the production of tungsten powder. As early as the 1950s, tungsten acid and…

Violet tungsten oxide powder may be used for preparing thermal insulation dispersion. And violet tungsten oxide can be prepared by APT hydrogen reduction method. It has been found by studying the preparation process that the formation conditions of violet tungsten oxide are related to the reduction temperature, hydrogen humidity, heating rate, grain size of APT, thickness of the layer, etc. The particle size of violet tungsten oxide increases with the increase of heating rate and reduction temperature. And it also…

Violet tungsten oxide powder may be used for preparing thermal insulation dispersion liquid. And violet tungsten oxide can be produced by hydrogen reduction using APT as a raw material under wet hydrogen conditions. Some scholars have studied the preparation process and found that the main factors affecting the particle size of violet tungsten oxide include the particle size of APT, the thickness of the layer, and the partial pressure ratio of water vapor to hydrogen. The specific impacts are shown…

Violet tungsten oxide powder may be applied to manufacture near infrared shielding material. And the heat insulating film material prepared by violet tungsten oxide has transparent appearance, which does not affect the daylighting and has better heat insulation effect than many other thermal insulation films on the market. Violet tungsten oxide can be prepared by using APT as a raw material. It is generally reduced under wet hydrogen conditions directly. The process is short and the equipment is simple. Studies…

Violet tungsten oxide powder for manufacturing infrared thermal insulation nano material can be prepared by APT wet hydrogen direct reduction method. The specific processes are: A certain amount of APT is loaded into the boat and pushed into the high temperature zone of the reduction furnace. At the same time, a certain proportion of H2 and steam mixed gas is fed, heated to the specified temperature and cooled for a suitable time, then cooled, cooled to room temperature, and heated,…

Violet tungsten oxide powder may be applied for manufacturing infrared ultraviolet shielding material In recent years, as a new material, ultrafine particles have become more and more widely. Ultrafine tungsten powder or tungsten carbide powder has also received great attention as a raw material for the production of ultrafine grained tungsten carbide. Therefore, a large amount of research has been conducted on the production of ultrafine tungsten powder or tungsten carbide powder at home and abroad. At present, the preparation…

Violet tungsten oxide powder may be applied for manufacturing transparent thermal insulation material, which is widely applied in building window glass and car window glass. Therefore, the quality of violet tungsten oxide powder should be controlled strictly, which can be detected by colorimetric method. Colorimetric method is a relatively straightforward and effective way to detect the quality of violet tungsten oxide, saving time and money. The color of violet tungsten oxide reflects its quality, and thus its quality can be…

Violet tungsten oxide powder may be used to produce transparent thermal insulation nanopowder, and to prepare WC powder and W powder, so that the quality detection of violet tungsten oxide is particularly important. The following is a method for directly controlling and detecting the quality of violet tungsten oxide – colorimetric method. The colorimetric method uses several colors of violet tungsten oxide to make several types of violet tungsten oxide standards, by comparing their colors to determine quality. For the…

Nano violet tungsten oxide for producing heat insulating window glass can be used to prepare tungsten powder and tungsten carbide powder. The violet tungsten oxide will directly affect the production and quality of W powder and WC powder. Therefore, how to judge the quality of violet tungsten oxide is the research concern of producers. And it is also the concern that must be mastered by users. The detection of the original violet tungsten oxide is consistent with the yellow tungsten…

Nano violet tungsten oxide for producing window heat insulation film can be prepared by using APT as raw material in a rotary furnace under the conditions of wet hydrogen and high temperature. Some scholars have analyzed various parameters affecting the quality of violet tungsten oxide, and improved the rotary furnace, and successfully realized the continuous industrial production of violet tungsten oxide. The obtained violet tungsten oxide is fine and uniform with stable quality. The scholar found that: 1. Using the…