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Nano particle size violet tungsten oxide for thermal insulation paper can be prepared by the following process: The dried ammonium paratungstate (APT) is quantitatively fed into the industrial rotary tube furnace, which has passed NH3 by a screw conveyor. And APT is calcined under certain conditions. In this process, NH3 is decomposed to generate H2, which will make APT calcined in a mild reducing atmosphere, gradually decomposed, and reduced to obtain violet tungsten oxide. According to the microstructure of the…

Nano particle size violet tungsten oxide may be applied for producing thermal insulation film. And it is widely used for the preparation of tungsten powder, tungsten carbide powder, and so on. As a result, violet tungsten oxide has gradually come to people’s eyes, especially manufacturers and researchers. Therefore, people are paid more attention to the facts of violet tungsten oxide. The violet tungsten oxide is light violet or blue violet. Some scholars have tested its main components and physical properties,…

Nano particle size violet tungsten oxide for ceramic microsphere may be used to produce tungsten powder. Researchers have observed the effect of violet tungsten oxide raw material on tungsten powder product. And they found that: The morphology of violet tungsten oxide under low-magnification SEM is characterized by uneven surface of the violet tungsten oxide aggregate with many fine micropores. The morphology of violet tungsten oxide in high-magnification SEM is characterized in that the aggregates are mainly composed of acicular or…

Nano particle size violet tungsten oxide for thermal insulation masterbatch can be used to prepare tungsten powder. The violet tungsten oxide powder is reduced to obtain W powder. In this process, the original needle-like or columnar crystal grains of violet tungsten oxide have been melted to form short rods, or a chain composed of a plurality of single crystal particles. The grain size is relatively uniform, and the particle size is at the range of 0.1~1μm. That is to say,…

Nano particle size violet tungsten oxide may be used to prepare nano-ceramic color master, which is important for manufacturing heat insulation material. So, the raw material — violet tungsten oxide powder has attracted more attention. A lot of researchers are still paying attention to violet tungsten oxide as it can not only be used in heat insulation filed, but for producing tungsten powder. As you may have known, blue tungsten oxide can also be used to prepare tungsten powder. While…

Nano particle size violet tungsten oxide may be applied to produce nano-ceramic dispersion solution, which will be a very important material for manufacturing heat insulation materials in the future as it has high heat insulation and high transparency than many other thermal insulation materials. So, such material is much studied, especially, the raw material — tungsten oxide. Both nanometer violet tungsten oxide and nano grain size blue tungsten oxide can be used to prepared ultrafine tungsten powder. However, under the…

Nanometer blue tungsten oxide, which may be applied for producing heat insulating window glass, does not necessarily have a good doping effect. That is because only blue tungsten oxide powder produced by the monoclinic hexagonal structure of ammonium paratungstate (APT) has a good doping effect. That is to say, the needle-like or polygonal crystal ammonium paratungstate does not satisfactorily meet the requirements of the doped tungsten wire. The reason why nano grain size blue tungsten oxide powder produced by the…

Nanometer blue tungsten oxide for window heat insulation film has replaced yellow tungsten oxide for the preparation of doped tungsten wire. At present, the doped tungsten wire made of blue tungsten oxide can basically meet the needs of the electric light source industry, but the overall quality level has not yet reached the international advanced level. It is especially important that after blue tungsten oxide replaces yellow tungsten oxide for the production of doped tungsten powder, the subsequent process of…

Nanometer blue tungsten oxide for thermal insulating glass is an important raw material for doped tungsten wire. However, in the process research and production in China, the process of addition of alkali metal oxides such as K, Si, and Al to blue tungsten oxide for the fabrication of doped tungsten wires was not noticed until the mid-1970s. Nowadays, blue tungsten oxide powder has basically replaced yellow tungsten oxide powder for the preparation of doped tungsten wires. This is because blue…

Nanometer blue tungsten oxide for preparing heat insulation coating exhibits a good doping effect due to its high chemical activity. In other words, blue tungsten oxide powder can be doped with other elements. However, it will increase the pickling process of doping tungsten powder, increase the production cost. And it is not conducive to environmental protection. Therefore, non-pickling process of doping blue tungsten oxide gradually attracts the attention of researchers. Especially, they pay more attention to the raw material —…