Preparation method of cesium-tungsten bronze powder and function film

A technology of cesium tungsten bronze and powder, which is applied in the field of preparation of cesium tungsten bronze powder, can solve the problems of complex process and high cost of cesium tungsten bronze powder, and achieve the effects of low cost, reduced production cost and excellent shielding performance

Inactive Publication Date: 2015-04-22
SHENZHEN JIADA HIGH TECH IND DEV
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, to provide a solar film and its pre...

Method used

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  • Preparation method of cesium-tungsten bronze powder and function film

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preparation example Construction

[0015] The embodiment of the present invention provides a method for preparing cesium tungsten bronze powder with simple process and low cost. The method comprises the steps of:

[0016] Step S01: exchange tungstate solution with cationic resin to obtain tungstic acid sol;

[0017] Step S02: adding citric acid solution and cesium carbonate solution to the tungstic acid sol prepared in step S01, and then performing mixing treatment to obtain a hydrothermal reaction precursor;

[0018] Step S03: The hydrothermal reaction precursor solution prepared in step S02 is subjected to a hydrothermal reaction at a temperature of 160-180° C. and a pressure of 0.8-1 MPa. After the reaction is completed, washing and drying are performed to obtain cesium tungsten bronze powder.

[0019] Specifically, in the above step S01, during the exchange process between the tungstate and the cationic resin, the hydrogen ions in the cationic resin are exchanged with the cations in the tungstate. Thus ma...

Embodiment 1

[0037] A preparation method of cesium tungsten bronze powder, comprising the steps of:

[0038] S11: Add 0.5 mol / L sodium tungstate (Na 2 WO 4 ?2H 2 O) The solution is exchanged with a cationic resin to obtain a tungstic acid sol;

[0039] S12: Add citric acid solution and cesium carbonate solution to the tungstic acid sol, and then perform mixing treatment to obtain a hydrothermal reaction precursor solution; wherein, in the hydrothermal reaction precursor solution, ensure that tungstic acid, citric acid and cesium carbonate The molar concentration ratio is 1:0.1:0.1; the concentration of citric acid in the hydrothermal reaction precursor is controlled to be 0.2 mol / L;

[0040] S13: The hydrothermal reaction precursor solution is placed in a high-pressure reactor for hydrothermal reaction. After the reaction is completed, ultrasonic washing, alcohol washing, centrifugation, and spray drying are performed to finally obtain CsxWO 3 Powder. Wherein, the temperature of the...

Embodiment 2

[0042] A preparation method of cesium tungsten bronze powder, comprising the steps of:

[0043] S21: Add 0.5 mol / L sodium tungstate (Na 2 WO 4 ?2H 2 O) The solution is exchanged with a cationic resin to obtain a tungstic acid sol;

[0044] S22: Add citric acid solution and cesium carbonate solution to the tungstic acid sol, and then perform mixing treatment to obtain a hydrothermal reaction precursor solution; wherein, in the hydrothermal reaction precursor solution, ensure tungstic acid, citric acid and cesium carbonate The molar concentration ratio is 1:0.1:0.5; the concentration of citric acid in the hydrothermal reaction precursor is controlled at 0.5mol / L;

[0045] S23: Put the hydrothermal reaction precursor solution in a high-pressure reactor for hydrothermal reaction. After the reaction is completed, it is washed with ultrasonic water, washed with alcohol, centrifuged, and spray-dried to finally obtain CsxWO 3 Powder. Wherein, the temperature of the hydrotherm...

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Abstract

The invention discloses a preparation method of cesium-tungsten bronze powder and a function film. The preparation method of the cesium-tungsten bronze powder comprises the following steps: carrying out an exchange treatment on tungstate solution and cationic resin to obtain tungstic acid sol; adding citric acid solution and cesium carbonate solution in the tungstic acid sol and then carrying out a mixing treatment to obtain hydrothermal reaction precursor solution; carrying out a hydrothermal reaction on the hydrothermal reaction precursor solution; after the reaction is finished, carrying out a washing treatment and a drying treatment to obtain the cesium-tungsten bronze powder. The function film disclosed by the invention contains the cesium-tungsten bronze powder prepared by the preparation method of the cesium-tungsten bronze powder disclosed by the invention; according to the preparation method of the cesium-tungsten bronze powder disclosed by the invention, by controlling reactants and carrying out hydrothermal method, the preparation process is effectively simplified and the production cost of the cesium-tungsten bronze powder is reduced; moreover, the cesium-tungsten bronze produced under a specific hydrothermal reaction condition has excellent shielding performance for infrared ray, particularly for near-infrared ray.

Description

technical field [0001] The invention relates to the technical field of thin films, in particular to a preparation method of cesium tungsten bronze powder and a functional film. Background technique [0002] Infrared light, also known as infrared light, is an electromagnetic wave with a wavelength between microwave and visible light. The wavelength is between 760 nanometers (nm) and 1 millimeter (mm). It is a non-visible light longer than red light. According to the wavelength, it can be divided into near-infrared , mid-infrared and far-infrared. Infrared light, especially near-infrared light, has an obvious thermal effect, which can easily lead to a rise in temperature, resulting in an increase in temperature such as in a room or in a car. [0003] Therefore, for the unfavorable response of infrared, the film is applied to buildings, especially architectural glass and automobiles. And with the popularity of car beauty, film is an essential part. The use of the film can no...

Claims

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Application Information

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IPC IPC(8): C01G41/00
CPCC01G41/00
Inventor 樊晓军关有俊熊永强
Owner SHENZHEN JIADA HIGH TECH IND DEV
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