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Blue nano tungsten oxide for near infrared shielding material may be prepared by using ammonium paratungstate as a raw material. During preparation, the APT raw material is placed on the feed hopper of the feed port. The APT slides down along the inverted cone of the feed hopper and enters the feed pipe. Push the feed tube along the feed tube under the push of the feed screw in the feed tube. Since the furnace tube can be rotatably installed…

Blue nano tungsten oxide for infrared thermal insulation nano material may be prepared by self-reduction of ammonium paratungstate (APT). Some researchers have found a method and a device for preparing blue tungsten oxide powder from APT reduction method. In this process, no ammonia gas or mixed gas of nitrogen and hydrogen or hydrogen is needed, thereby reducing the production cost. At the same time, the emission of harmful gases such as ammonia into the atmosphere is eliminated, which means that…

Blue nano tungsten oxide, which is applied to produce infrared ultraviolet shielding material for applying in heat insulation filed, may be prepared by reduction method using ammonium paratungstate (5(NH4)2O?12WO3?5H2O) as a raw material. In a container with good sealing properties, ammonium paratungstate is fed, and the container is heated. The heating temperature is set to 400°C~600°C to thermally decompose the 5(NH4)2O?12WO3?5H2O into tungsten trioxide, ammonia gas and water vapor. In the container, by using the characteristic of tungsten oxide —…

Blue nano tungsten oxide may be applied for the preparation of transparent thermal insulation material. And the thermal insulation material is widely applied in building, car, and even airplane for heat insulation. Therefore, the production method of nanometer blue tungsten oxide for transparent heat insulating materials is developing with the progress of scientific research. At present, the blue tungsten oxide is mainly prepared by using ammonium paratungstate (APT) as raw material at home and abroad. The main process is as…

Blue nano tungsten oxide for transparent thermal insulation nanopowder may be used to prepare tungsten powder. As you may have known, tungsten is a refractory metal with a melting point of up to about 3410°C. And it has high hardness and strong ductility. Also, it is not easy to be affected by air at normal temperature. Due to these characteristics, tungsten has a wide range of applications, such as, tungsten heavy alloys, for automatic watch pendulum bob, telecommunication vibrator and…

Lignin is aromaticity high polymer exists in plant, it exists in the xylem of plant to tramsport water and structure of mineral, xylem maintains high hardness to support the whole plant.

Nano particle size violet tungsten oxide for thermal insulation dispersion may be prepared by using ammonium metatungstate, ammonium nitrate and urea as raw materials. The obtained powder is a nanorod-shaped violet tungsten oxide with a diameter of 100~200nm and a length of 0.5~5μm. The violet tungsten powder prepared by this method has fine particle size, high preparation efficiency and low cost. The specific preparation steps are as follows: Step One: Weigh 0.01mol of ammonium metatungstate ((NH4)6H2W1204(i)), 0.36mol of ammonium nitrate…

Nano particle size violet tungsten oxide for thermal insulation dispersion liquid may be prepared by using ammonium metatungstate (AMT), ammonium nitrate and an auxiliary agent as raw materials. These raw materials are mixed into solutions by a certain ratio. And then the obtained solution is heated, evaporated, and performed redox reaction to obtain violet tungsten oxide. The obtained powder is nano needle-shaped violet tungsten oxide powder with large specific surface area, large surface activity and other excellent performance.The preparation of…

Nano particle size violet tungsten oxide may be applied for the preparation of near infrared shielding material. And the shielding material is widely used in the fields of military and heat insulation. Therefore, the preparation of violet tungsten oxide is very important. And thus, the following mainly introduces a new preparation method of ultrafine violet tungsten oxide. This producing method has the characteristics of short process and low cost. And the prepared violet tungsten oxide powder has high purity, large…