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Nanometer violet tungsten oxide may be applied for producing thermal insulation dispersion, and therefore be applied to prepare thermal insulation films that require high thermal insulation and high visible light transmittance. Violet tungsten oxide can also be used in spray drying-direct carbonization to prepare nano particle size WC-Co composite powder. Some scholars have observed the SEM surface distribution image of WC-Co prepared at 950°C and found that: In the image, (a) is an enlarged SEM photograph of the 20,000-fold powder;…

Nanometer violet tungsten oxide may be applied for the manufacture of thermal insulation dispersion liquid, which may be used for the production of thermal insulation films, and then be applied in the fields of construction and automotive. Violet tungsten oxide can also act as a raw material in the preparation of nano grain size WC-Co composite powder by spray drying-direct carbonization. Some scholars have studied the X-ray diffraction pattern of WC-Co composite powder prepared by hydrogen reduction at 950°C and…

Nanometer violet tungsten oxide may be applied for producing near infrared shielding material, such as office heat insulation film, sun room heat insulation film, and automotive heat insulation film, etc. Violet tungsten oxide can also be used in the preparation of nanometer WC-Co composite powder by violet tungsten oxide spray drying-direct carbonization. Some scholars have observed the mechanism of reduction carbonization reaction and found that: In the low temperature region, violet tungsten oxide and cobalt acetate are reduced to W…

Nanometer violet tungsten oxide may be applied for producing infrared thermal insulation nano material. In other words, it can be applied in the production of thermal insulation films and other heat-insulating products for buildings and cars. The violet tungsten oxide can also be used as one of the raw materials in the process of preparing the nano particle size WC-Co composite powder by the violet tungsten oxide spray drying-direct carbonization method. In this process, the needle-like particles of violet tungsten…

Nanometer violet tungsten oxide may be applied for producing infrared ultraviolet shielding material, which is a new type of thermal insulation material with high heat insulation and high visible light transmission. Also, such thin film is explosion-proof and anti-glare. Violet tungsten oxide can also be used as a material for preparing WC-Co composite powder, mainly used in the violet tungsten oxide spray drying-direct carbonization method. In this process, under the condition of 950°C, the different boat positions were tested to…

Nanometer violet tungsten oxide may be applied for preparing transparent thermal insulation material, such as thermal insulation film for building, cars, and so on. Violet tungsten oxide can also be used in the preparation of nano particle size WC-Co composite powder by spray drying-direct carbonization method. Then, the SEM image of the precursor powder prepared by spray drying is studied. And it was found that: In the image (a), the powder particle size is 10~100μm; and in the image (b),…

Nanometer violet tungsten oxide may be applied for manufacturing transparent thermal insulation nanopowder. It should be noted that the obtained powder is not really transparent, but the thermal insulation film made therewith is transparent. The violet tungsten oxide, instead of the tungsten salt, can also be used in the preparation of WC-Co composite powder by violet tungsten oxide spray drying-calcination-carbonization method. The morphology of the precursor powder prepared by spray drying in the preparation process was investigated. The structure of…

Nano violet tungsten oxide powder may not only be applied in heat insulating window glass, but also for the preparation of nano grain size WC-Co composite powder by violet tungsten oxide spray drying-direct carbonization method. The conventional process for preparing WC-Co composite powder is firstly prepared cobalt salt into Co powder by acid leaching, precipitation, calcination and reduction; and prepared tungsten concentrate into WC powder by smelting, calcining, reducing and carbonizing. Alcohol is used as a wet grinding medium. The…

Nano violet tungsten oxide powder may be applied for producing window heat insulation film with high transparency. Violet tungsten oxide can also be used in the preparation of nano-WC-Co composite powder by violet tungsten oxide spray drying-direct carbonization method. The spray conversion method is a relatively mature and advanced method for the preparation of WC-Co composite powder in the world. Spray conversion method, also called thermochemical synthesis method, is a method that dissolves soluble tungsten salt and soluble cobalt salt…

Nano violet tungsten oxide powder may be applied in thermal insulating glass in the form of heat insulation film. Nano grain size violet tungsten oxide can also be used as one of the raw materials for preparing nano WC-Co composite powder by violet tungsten oxide spray drying-direct carbonization method. Other raw materials used are cobalt acetate, organic carbon (carbon content≥40%, soluble in water) and ultrapure carbon black. Preparation of Nano WC-Co Composite Powder by Violet Tungsten Oxide Spray Drying-Direct Carbonization…