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A kind of glass transparent thermal insulation coating and preparation method thereof

A heat-insulating coating, transparent technology, applied in coatings and other directions, can solve problems such as poor thermal insulation performance, and achieve the effect of simple coating components

Inactive Publication Date: 2011-12-14
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Traditional glass can transmit light, but its thermal insulation performance is poor

Method used

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  • A kind of glass transparent thermal insulation coating and preparation method thereof
  • A kind of glass transparent thermal insulation coating and preparation method thereof
  • A kind of glass transparent thermal insulation coating and preparation method thereof

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[0024] The invention provides a novel transparent heat-insulating coating for glass surfaces and a preparation method thereof. The coating contains a general formula of Cs 0.1-3.5 WO 3 Cesium tungsten bronze powder, the crystal phase composition of the powder is Cs 0.2 WO 3 or Cs 0.32 WO 3 , the powder particle size is 100~1300nm, the specific surface area is 7~50m 2 / g. The preparation method of the coating includes the step of mixing the above-mentioned cesium tungsten bronze powder with a film-forming agent, polyvinyl butyral (PVB), polyvinyl alcohol (PVA) or collodion. The cesium tungsten bronze powder described in the present invention is prepared by the following method:

[0025] ① Prepare a precursor solution containing tungstic acid, cesium carbonate and reducing substances according to the Cs / W molar ratio of 0.01 to 0.35:1, and the solvent is water or a mixture of ethanol and water in a volume ratio of 1:4 to 4:1;

[0026] ②The precursor solution is placed in...

Embodiment 1

[0054] ① Preparation of Cs with Cs / W (molar ratio) = 0.3:1 0.3 WO 3 Powder.

[0055] Weigh a certain amount of sodium tungstate, dissolve it in deionized water, and prepare a 0.5mol / L sodium tungstate solution, and use styrene cation exchange resin to ion-exchange the sodium tungstate solution to obtain 0.5mol / L tungstic acid solution; measure 20ml of 0.5mol / L tungstic acid solution, put it into a beaker, add 30ml of 2mol / L citric acid solution once during stirring, slowly add 5ml of 0.3mol / L cesium carbonate solution dropwise, and continue stirring for 1h. Get prepared Cs 0.3 WO 3 Powder reaction precursor solution; transfer the reaction precursor solution prepared above into an autoclave, and conduct a continuous hydrothermal reaction at 200°C for 3 days; wash the reacted precipitate with water and alcohol three times in sequence, and after centrifugation , dried at 50°C for 10 h in a sub-vacuum to obtain blue Cs 0.3 WO 3 Powder.

[0056] ②Preparation of polyvinyl alc...

Embodiment 2

[0062] ① Preparation of Cs with Cs / W (molar ratio) = 0.3:1 0.3 WO 3 Powder.

[0063] Weigh a certain amount of sodium tungstate, dissolve it in deionized water, and prepare a 0.5mol / L sodium tungstate solution, and use styrene cation exchange resin to ion-exchange the sodium tungstate solution to obtain 0.5mol / L tungstic acid solution; measure 20ml of 0.5mol / L tungstic acid solution, put it into a beaker, add 12.6g of citric acid once during stirring, after stirring evenly, slowly add 5ml of 0.3mol / L cesium carbonate solution dropwise, and then add 10ml Absolute ethanol and 20ml deionized water, continue to stir for 1h, obtain preparation Cs 0.3 WO 3 Powder reaction precursor solution; transfer the reaction precursor solution prepared above into an autoclave, and conduct a continuous hydrothermal reaction at 190°C for 3 days; wash the reacted precipitate with water and alcohol three times in sequence, and after centrifugation , dried at 50°C for 10 h in a sub-vacuum to obt...

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Abstract

A glass transparent heat-insulating coating and its preparation method, the coating contains cesium tungsten bronze powder with a general formula of Cs0.1-3.5WO3, the crystal phase composition of the powder is Cs0.2WO3 or Cs0.32WO3, the powder The particle size is 100-1300nm, and the specific surface area is 7-50m2 / g. The glass transparent heat-insulating coating of the present invention has the functions of visible light transmission and near-infrared shielding, and has the function of light self-regulation, that is, with the extension of light intensity and light time, the effects of visible light transmission and near-infrared shielding will be further enhanced , so it is especially suitable for preparing transparent thermal insulation film on the surface of glass. It is an intelligent transparent thermal insulation coating for glass and has broad application prospects in the fields of thermal insulation of architectural window glass and automotive glass. The coating has simple components and is suitable for large-scale industrial production and practical application.

Description

technical field [0001] The invention relates to a novel glass heat-insulation coating with near-infrared shielding function, in particular to a glass transparent heat-insulation coating containing cesium tungsten bronze powder and a preparation method thereof. Background technique [0002] Traditional glass can transmit light, but its thermal insulation performance is poor. The wavelength distribution of solar radiation is 300-2500nm, of which the ultraviolet part accounts for 14%, the visible part accounts for 40%, and the infrared part accounts for 44%. Glass transparent heat-insulating coating is a functional coating that is coated on the surface of glass to reduce the near-infrared shielding coefficient of glass as the main heat-insulating method under the premise of maintaining a certain visible light transmittance. Oxide particles currently commonly used in the preparation of glass transparent thermal insulation coatings include indium tin oxide (ITO) (Electroceram, 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/00C09D7/12C09D129/14C09D129/04C09D101/18C03C17/32C03C17/23
Inventor 刘敬肖史非彭战军
Owner DALIAN POLYTECHNIC UNIVERSITY
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