Preparation method of cesium doped tungsten oxide nano powder serving as infrared barrier

An infrared blocking and nano-powder technology, applied in the direction of tungsten oxide/tungsten hydroxide, nanotechnology, etc., can solve the problems of environmental harm, poor stability and high cost, and achieve the effects of good environmental protection, good stability and low cost

Inactive Publication Date: 2017-02-15
HU BEN NEW MATERIAL TECH SHANGHAI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a preparation method of cesium-doped tungsten oxide nano-powder as an infrared barrier, which solves the problem of the infrared barrier rate of cesium-doped

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  • Preparation method of cesium doped tungsten oxide nano powder serving as infrared barrier
  • Preparation method of cesium doped tungsten oxide nano powder serving as infrared barrier
  • Preparation method of cesium doped tungsten oxide nano powder serving as infrared barrier

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preparation example Construction

[0023] A method for preparing cesium-doped tungsten oxide nanopowder as an infrared barrier, comprising the following steps:

[0024] (1) Dissolve the raw material tungsten salt and cesium salt of the reaction amount in the solvent respectively, and the tungsten salt solution is configured into a tungstic acid solution through the exchange resin;

[0025] (2) Mix tungstic acid solution, cesium salt solution, and reaction solvent, and keep stirring for 1 to 3 hours to obtain a hydrothermal reaction precursor;

[0026] (3) Put the precursor solution in a closed hydrothermal reaction kettle with a stirring device, and stir for 5-20 hours at 180-300°C;

[0027] (4) The hydrothermal reaction precipitate is repeatedly washed, dried, pulverized, and calcined to obtain the target product.

[0028] In step (1), the tungsten salt is any one of sodium tungstate, ammonium tungstate, and potassium tungstate, the cesium salt is any one of cesium carbonate, cesium nitrate, and cesium sulfat...

Embodiment 1

[0030] A method for preparing cesium-doped tungsten oxide nanopowder as an infrared barrier, comprising the following steps:

[0031] (1) Dissolve the raw materials sodium tungstate and cesium carbonate in deionized water respectively, and the sodium tungstate solution is configured into a tungstic acid solution through an exchange resin;

[0032] (2) Dissolve sorbic acid in deionized water to prepare a reaction solvent. The mass of the reaction solvent is 1.5 times the sum of the mass of tungsten salt and cesium salt. Mix tungstic acid solution, cesium carbonate solution, and reaction solvent for 60 Stirring for 2 hours in a water bath at ℃ to prepare a hydrothermal reaction precursor;

[0033] (3) Place the precursor solution in a closed hydrothermal reaction kettle with a stirring device, and stir for 12 hours at 200°C;

[0034] (4) After washing the hydrothermal reaction precipitate repeatedly with deionized water, dry it at 90°C for 10 hours, and then use a jet mill to g...

Embodiment 2

[0037] A method for preparing cesium-doped tungsten oxide nanopowder as an infrared barrier, comprising the following steps:

[0038] (1) Dissolve the raw materials ammonium tungstate and cesium nitrate of the reaction amount in absolute ethanol respectively, and the ammonium tungstate solution is configured into a tungstic acid solution through an exchange resin;

[0039] (2) Dissolve citric acid in absolute ethanol to prepare a reaction solvent. The mass of the reaction solvent is twice the sum of the mass of tungsten salt and cesium salt. Mix tungstic acid solution, cesium nitrate solution, and reaction solvent for continuous Stir in a water bath at 50°C for 1.5 hours to prepare a hydrothermal reaction precursor;

[0040] (3) Put the precursor solution in a closed hydrothermal reaction kettle with a stirring device, and stir for 12 hours at 180°C;

[0041] (4) After washing the hydrothermal reaction precipitate repeatedly with deionized water, dry it at 80°C for 8 hours, a...

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Abstract

The invention discloses a preparation method of cesium doped tungsten oxide nano powder serving as an infrared barrier and belongs to the field of infrared barrier materials. The preparation method includes the steps of firstly, respectively dissolving raw material tungsten salt and cesium salt into solvents, and preparing the tungsten salt solution into a tungstic acid solution through exchange resin; secondly, mixing the tungstic acid solution, the cesium salt solution and a reaction solvent, and continuously stirring for 1-3 hours to obtain hydrothermal reaction precursor liquid; thirdly, performing stirring reaction on the precursor liquid for 5-20 hours under 180-300 DEG C; fourthly, washing, drying, crushing and calcining the hydrothermal reaction products to obtain the cesium doped tungsten oxide nano powder. The preparation method has the advantages that the prepared cesium doped tungsten oxide nano powder is good in stability, the ultraviolet rejection rate of the cesium doped tungsten oxide nano powder is larger than 99.8%, the visible light transmittance of the cesium doped tungsten oxide nano powder is 70-88%, and the infrared rejection rate of the cesium doped tungsten oxide nano powder is 94-99%; the preparation method is low in energy consumption, low in cost, easy to operate, good in environment protection performance and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a preparation method of cesium-doped tungsten oxide nanopowder as an infrared barrier, belonging to the field of infrared barrier materials. Background technique [0002] Infrared light has an obvious thermal effect, which can easily lead to an increase in the ambient temperature. Therefore, the surfaces of architectural glass, car film, outdoor facilities, etc. need to use thermal insulation materials to achieve the effect of thermal insulation and energy saving. In recent years, tungsten oxide has attracted widespread attention due to its excellent photoelectric properties, and tungsten oxide powder doped with cesium has strong absorption characteristics in the infrared region, and at the same time has a high transmittance of visible light, making it effective in blocking infrared, Glass insulation and other aspects have a wide range of application prospects. [0003] Cesium-doped tungsten oxide nanopowder prepared by tradit...

Claims

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Application Information

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IPC IPC(8): C01G41/02B82Y40/00
CPCC01G41/02C01P2002/82C01P2004/64C01P2006/60
Inventor 李曼管小敏
Owner HU BEN NEW MATERIAL TECH SHANGHAI
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