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Dark blue nano tungsten oxide for thermal insulation film can be prepared by a mild H2 reduction method using a common type ammonium paratungstate or a regular type ammonium paratungstate as a raw material in a multi-tube furnace. The experimental results show that the particle size distribution of the blue tungsten oxide powder produced by the regular type ammonium paratungstate is better than that of common type ammonium paratungstate. Specifically, the ammonium paratungstate of common crystal form has an uneven…

Dark blue nano tungsten oxide for ceramic microsphere may be prepared by using the regular type ammonium paratungstate or the common type ammonium paratungstate as raw materials. Among them, the blue tungsten oxide powder obtained by using these two kinds of ammonium paratungstate has different ammonia contents. The results show that the ammonia content of blue tungsten oxide produced by regular type ammonium paratungstate is higher than that of blue tungsten oxide produced by common type ammonium paratungstate. The details…

Dark blue nano tungsten oxide may be applied for preparing thermal insulation masterbatch and be used to produce AKS-doped tungsten wire, i.e., tungsten wire doped with Al, Si and K elements. Moreover, studies have shown that the quality of blue tungsten oxide powder affects the performance of the AKS-doped tungsten wire. Therefore, it is necessary to have an in-depth understanding of ammonium paratungstate (APT) as a precursor in the preparation of blue tungsten oxide. At present, due to the pressure…

Dark blue nano tungsten oxide, which may be applied for preparing nano-ceramic color master, can be produced by using ammonium paratungstate (APT) as a precursor. Among them, some scholars believe that the quality of APT has a fundamental impact on the quality of blue tungsten oxide. Some scholars have also found through comparison experiments that the morphology and particle size of the raw material APT have strong inheritance to blue tungsten oxide powder obtained by reduction. Besides, some scholars have…

Dark blue nano tungsten oxide may not only be applied for preparing nano-ceramic dispersion solution, but also be used to produce AKS-doped tungsten wire (i.e., tungsten wire doped with Al, Si and K elements). This is because doping blue tungsten oxide has the following advantages. For example, the blue tungsten oxide powder has a large specific surface area and a large surface crack. Also, blue tungsten oxide has good ion exchange activity. Besides, there are a large amount of hydrogen…

Dark blue nano tungsten oxide may be applied for manufacturing thermal insulation dispersion, which is mainly used in heat insulation fields such as building window glasses and automotive window glasses. More important, blue tungsten oxide of heat insulation performance is a new potential in the future. Therefore, researchers have done lots of experiments to know this material. For example, they found that blue tungsten oxide powder can be prepared using ammonium paratungstate (APT) as a raw material. Among them, APT…

Dark blue nano tungsten oxide, which may be applied for producing thermal insulation dispersion liquid, is a new heat insulation material with potential market. So, the blue tungsten oxide is studied. Researchers have found that: the quality of blue tungsten oxide can be affected by the precursor ammonium paratungstate (APT). That is to say, blue tungsten oxide can inherit the structure, morphology and other properties of APT, so the quality of APT has a fundamental effect on the quality of…

Dark blue nano tungsten oxide for preparing near infrared shielding material is a new type of nano heat insulation material, which can shield most of IR and UV rays, especially for the near-infrared region with a wavelength of 800-1000nm and the ultraviolet region below 380nm. And the absorption and reflection effect is obvious. Such near-infrared absorbing material has a purity of more than 99.99% and a particle diameter of 50-100nm. It is prepared by high-temperature calcination. The tungsten oxide is…

Dark blue nano tungsten oxide not only can be applied for the manufacturing of infrared thermal insulation nano material, but also be used to prepare medium grain size tungsten powder by cyclic redox process. As you may know, tungsten carbides may crack or break during use. Studies have shown that most of the places where tungsten carbides appear cracks and fractures are large-sized crystal grains. That is to say, in the production process, it is necessary to control the appearance…

Dark blue nano tungsten oxide, which may be applied for preparing infrared ultraviolet shielding material, is blue tungsten oxide with nano grain size. The shielding material obtained may be used in thermal insualting window glass. The phase composition of the nano grain size blue tungsten oxide is not a single phase. After being subjected to once oxidation and twice reduction, the blue tungsten oxide is transferred into the medium grain size tungsten powder with a particle diameter of 3~10μm, accounting…