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Nanometer yellow tungsten oxide may be used to produce transparent thermal insulation material, more exactly, for producing transparent heat-insulating film. And therefore, it can be used on glass which requires high heat insulation and high light transmittance, such as, architectural glass, automobile glass, and the like. Nano grain size yellow tungsten oxide is also an electrochromic material that can be used to produce electrochromic devices. The so-called electrochromic device is a device that utilizes the electrochromic effect of a substance,…

Nanometer yellow tungsten oxide may be used to produce transparent thermal insulation nanopowder. In fact, the nanopowder is not transparent. But, thermal insulation film using nano grain size yellow tungsten oxide as raw material is transparent. Besides, yellow tungsten oxide is also a typical representative of inorganic electrochromic materials. At present, electrochromic devices using yellow tungsten oxide as dingal material have been industrialized. In practical applications, especially in the preparation of electrochromic devices, electrochromic materials meet the following requirements generally:…

Nanometer yellow tungsten oxide may be used in the preparation of ceramic microsphere. And therefore it can be applied for the development of nano-particle reinforced aluminum matrix composites with light weight and high strength. The aluminum alloy matrix reinforced with the ceramic microspheres can improve the rigidity and wear resistance of aluminum alloy. And the material can have higher strength when working in a wider temperature range than the existing materials, so that it can be used in the aerospace…

Nanometer yellow tungsten oxide is mainly applied to heat insulating window glass of vehicles in the form of thin film. This kind of thermal insulation thin film may selectively shield various thermal energy sources in the sun, including infrared and ultraviolet rays. And it does not influence the visible light through windows. It means that such film can effectively get the target of thermal insulation. And it can protect the human body and the interior articles of car from UV…

Nano particle size tungsten trioxide for manufacturing ceramic microsphere may be prepared by hydrothermal reaction using Na2WO4?2H2O, urea and concentrated hydrochloric acid as raw materials. In this process, the NH4+ produced by urea decomposition makes the metastable hexagonal phase tungsten trioxide stable. Therefore, it is necessary to study the effect of urea on the crystal structure of tungsten trioxide after stirring at room temperature under hydrothermal treatment. After the addition of urea, the solution was stirred at room temperature for…

Nano particle size tungsten trioxide for producing heat insulating window glass may be prepared by hydrothermal reaction, in which sodium tungstate, urea and concentrated hydrochloric acid are used as raw materials. As the NH4+ produced by the thermal decomposition of urea can make the synthesized metastable hexagonal phase tungsten trioxide stable, it is necessary to study the effect of urea on the crystal structure of tungsten trioxide under stirring conditions at room temperature. After the addition of urea, the solution…

Nano particle size tungsten trioxide for preparing window heat insulation film has excellent shielding performance to near-infrared rays of 800-1200nm. In other word, the nano grain size tungsten trioxide shows superior thermal insulation performance. The appearance of thermal insulation film of tungsten trioxide is a breakthrough revolution in heat insulation of glass and energy-saving industry as its thermal insulation performance is better than Low-e glass, insulating glass (hollow glass) and other heat insulating glass products. The heat insulating glass made…

Nano particle size tungsten trioxide for preparing thermal insulating glass may be prepared by hydrothermal reaction using sodium tungstate, urea and hydrochloric acid as raw materials. The hydrolysis of urea under hydrothermal conditions releases NH4+ and HCO3-. It was found that the cations (NH4+) can stabilize the metastable hexagonal phase tungsten trioxide. Then, (NH4)2SO4, which has an equivalent molar amount to NH4+ of urea, and NH4HCO3, which has an equivalent molar amount to HCO3- of urea, are respectively added to…

Nano particle size tungsten trioxide may be used for the preparation of heat insulation coating. The coating is prepared by a special production process using tungsten trioxide nano-slurry as raw material. It not only has the full ding of the glass coating, but also has the outstanding heat insulation effect. And therefore, the surface temperature of buildings can be reduced by more than 15-30 degrees. And such thermal insulation coating of tungsten trioxide is mainly used in glass windows and…

Nano particle size tungsten trioxide may be applied for producing thermal insulation coating, and therefore it is widely used in architectural window films, automotive heat-insulating films and the like. Therefore, it is necessary to conduct relative research on the preparation of nano grain size tungsten trioxide. For example, the role of urea in the preparation of nanometer tungsten trioxide by hydrothermal reaction using sodium tungstate, urea and hydrochloric acid as raw materials should be studied. Studies have shown that it…