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A multi-component doped tungsten oxide infrared blocking nanopowder and its preparation method

A nano-powder and infrared blocking technology, which is applied in chemical instruments and methods, tungsten oxide/tungsten hydroxide, nanotechnology, etc., can solve the problems of large infrared blocking attenuation, and achieve good environmental protection, simple production, and good stability Effect

Active Publication Date: 2019-08-06
畅的新材料科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the infrared blocking attenuation of single doped tungsten oxide is greater than 10% under infrared irradiation at 500 °C

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A multi-component doped tungsten oxide infrared blocking nanopowder, its expression is Cs x sn y Bi z W (1﹣x﹣y﹣z) o 3 , where x is 0.05, y is 0.01, and z is 0.01.

[0021] A method for preparing multi-component doped tungsten oxide infrared blocking nanopowder, comprising the following steps:

[0022] (1) Prepare raw materials: according to the expression Cs x sn y Bi z W (1﹣x﹣y﹣z) o 3 The molar ratio of W, Cs, Sn, and Bi elements in the medium, accurately weigh the corresponding mass of sodium tungstate dihydrate Na 2 WO 4 2H 2 O, cesium iodide CsI, tin chloride SnCl 4 , bismuth nitrate Bi(NO 3 ) 3 ·5H 2 O;

[0023] (2) Pretreatment: Physically crush the weighed raw materials to the nanometer level and mix them, and add them to the reactor after mixing;

[0024] (3) Precursor solution preparation: Add a sufficient amount of citric acid reaction solvent into the reaction kettle. The mass of the reaction solvent is 1 times the total mass of tungsten salt...

Embodiment 2

[0028] A multi-component doped tungsten oxide infrared blocking nanopowder, its expression is Cs x sn y Bi z W (1﹣x﹣y﹣z) o 3 , where x is 0.10, y is 0.03, and z is 0.02.

[0029] A method for preparing multi-component doped tungsten oxide infrared blocking nanopowder, comprising the following steps:

[0030] (1) Prepare raw materials: according to the expression Cs x sn y Bi z W (1﹣x﹣y﹣z) o 3 The molar ratio of W, Cs, Sn, and Bi elements in the medium, accurately weigh the corresponding mass of sodium tungstate dihydrate Na 2 WO 4 2H 2 O, cesium iodide CsI, tin chloride SnCl 4 , bismuth nitrate Bi(NO 3 ) 3 ·5H 2 O;

[0031] (2) Pretreatment: Physically crush the weighed raw materials to the nanometer level and mix them, and add them to the reactor after mixing;

[0032] (3) Precursor solution preparation: Add a sufficient amount of citric acid reaction solvent into the reaction kettle. The mass of the reaction solvent is 1 times the total mass of tungsten salt...

Embodiment 3

[0036] A multi-component doped tungsten oxide infrared blocking nanopowder, its expression is Cs x sn y Bi z W (1﹣x﹣y﹣z) o 3 , where x is 0.10, y is 0.05, and z is 0.02.

[0037] A preparation method of multi-component doped tungsten oxide infrared blocking nanopowder, comprising the following steps:

[0038] (1) Prepare raw materials: according to the expression Cs x sn y Bi z W (1﹣x﹣y﹣z) o 3 The molar ratio of W, Cs, Sn, and Bi elements in the medium, accurately weigh the corresponding mass of sodium tungstate dihydrate Na 2 WO 4 2H 2 O, cesium iodide CsI, tin chloride SnCl 4 , bismuth nitrate Bi(NO 3 ) 3 ·5H 2 O;

[0039] (2) Pretreatment: Physically crush the weighed raw materials to the nanometer level and mix them, and add them to the reactor after mixing;

[0040] (3) Precursor solution preparation: add a sufficient amount of citric acid reaction solvent to the reaction kettle, the mass of the reaction solvent is 1 times the total mass of tungsten salt,...

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PUM

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Abstract

The invention discloses multi-component doped tungsten oxide infrared rejected nano powder and a preparation method thereof, which belong to the technical field of the doped tungsten oxide infrared rejected nano powder. An expression formula is CsxSnyBizW(1-x-y-z)O3, wherein x is greater than 0 and less than 0.3, y is greater than 0 and less than 0.1, and z is greater than 0 and less than 0.1, andby controlling the doping proportion, the infrared rejected performance and visible light transmittance of a target product are adjusted. The prepared Sn, Bi and Cs-codoped tungsten oxide nano powderhas good stability, infrared ray rejection can achieve 96-99%, the visible light transmittance is 75-90%, the nano powder can be used for outdoor heat-insulation materials for buildings, automobilesand trains, compared with single-doped tungsten oxide, under infrared irradiation at 500 DEG C, the infrared rejected attenuation is greater than 10%, and the infrared rejected attenuation of the Sn,Bi and Cs-codoped tungsten oxide is less than 1% under same conditions. The preparation method of the Sn, Bi and Cs-codoped tungsten oxide nano material is simple, technical operation is easy, environmental protection performance is good, cost is low, and the method has an industrial application prospect.

Description

technical field [0001] The invention relates to a multi-component doped tungsten oxide infrared blocking nano powder and a preparation method thereof, belonging to the technical field of doped tungsten oxide infrared blocking nano powder. Background technique [0002] Infrared rays account for 53% of the total energy of sunlight, distributed in the wavelength range of 700-2400nm, and its thermal effect will cause the ambient temperature to rise. In order to realize the heat insulation and energy saving of buildings, automobiles and outdoor facilities, people use heat insulation materials to block the transmission of infrared rays. The ways to block infrared transmission include infrared reflection and infrared absorption. Among them, cesium-doped tungsten oxide powder has a particularly strong absorption characteristic for sunlight in the near-infrared region, and can transmit more visible light. Therefore, it has a good application prospect in construction, automobile and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G41/02B82Y40/00
CPCB82Y40/00C01G41/006C01P2004/80C01P2006/60
Inventor 李曼郑文李方圆宋亚
Owner 畅的新材料科技(上海)有限公司