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Ceramic products with transparent heat reflection coat on surface and preparation method thereof

A technology for heat-reflective coatings and ceramic products, applied in the field of ceramic products and their preparation, can solve the problems of poor uniformity of film formation, high ultrasonic frequency, unstable aerosol, etc., and achieve low carrier gas pressure and good uniformity of film formation , good electrical conductivity

Inactive Publication Date: 2008-07-09
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional ultrasonic spray pyrolysis film-making method is to transport the mist to the nozzle through the carrier gas after ultrasonic fogging, and then deposit the aerosol to form a film. This method has the disadvantages of high ultrasonic frequency, complex mechanism, unstable aerosol, and Problems such as poor film uniformity

Method used

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  • Ceramic products with transparent heat reflection coat on surface and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (ATO / SiO 2 )-Rotary coated ceramic products

[0033] The film structure is ATO / SiO 2 / Ceramic substrate, the preparation method is as follows:

[0034] ① Preparation of silica sol: add 50ml of ethyl orthosilicate to 200ml of ethanol, and adjust the pH of the solution to 2-3 with 17% HCl. Stir and react at room temperature for 2h to obtain a silica sol with a concentration of 1.2mol / l .

[0035] ②ATO sol preparation: take 13.54g SnCl 2 ·2H 2 Dissolve O in 50ml absolute ethanol and 50ml acetic acid, add 5ml acetylacetone as stabilizer, stir and react at 70℃ for 2h; then weigh SbCl 3 Dissolve in 25ml absolute ethanol and 25ml acetic acid, make the molar ratio of Sb ion to Sn ion reach 10%, stir and react at 70℃ for 2h; then react with SnCl 2 The solution is mixed and stirred for 2 hours, and finally aged for 24 hours to form an antimony-doped tin oxide sol.

[0036] ③Spin coating and heat treatment: Fix the ceramic substrate 1 on the rotating table. When the substrate temperat...

Embodiment 2

[0037] Example 2 (ITO / SiO2)-spin coating

[0038] The film structure is ITO / SiO 2 / Ceramic substrate, the preparation method of ITO sol is as follows, and the rest is the same as in Example 1.

[0039] ITO sol preparation method: take 2g InCl 3 ·4H 2 Dissolve O in 100ml of absolute ethanol, add 1m of acetylacetone as stabilizer, stir and react at 60℃ for 2h; then weigh SnCl 4 Dissolve in 25ml of absolute ethanol, make the molar ratio of Sn ions to In ions reach 5:100, stir and react at 60℃ for 2h; then react with SnCl 4 The solution is mixed and stirred for 2 hours, and finally aged for 24 hours to form tin-doped indium oxide sol.

Embodiment 3

[0040] Example 3 (ITO / SiO2)-spin coating

[0041] The film structure is ITO / SiO 2 The preparation methods of ceramic substrate and ITO sol are as follows, and the rest are the same as in Example 1.

[0042] Take 10g InCl 3 ·4H 2 O was dissolved in 100ml of absolute ethanol, 5ml of diethanolamine was added as a stabilizer, and the reaction was stirred at 70℃ for 2h; then SnCl was weighed 4 Dissolve in 25ml of absolute ethanol, make the molar ratio of Sn ion to In ion reach 12:100, stir and react at 70℃ for 2h; then react with SnCl 4 The solution is mixed and stirred for 2 hours, and finally aged for 24 hours to form tin-doped indium oxide sol.

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Abstract

The invention discloses a ceramic product which is provided with a transparent heat-reflective coating on surface. The invention uses ceramic as a substrate to coat sequentially a layer of ionic barrier layer thin film and a layer of transparent conductive oxidation thin film on the surface of the ceramics, or uses the ceramic as the substrate to coats sequentially a layer of ionic barrier layer thin film, a layer of metallic film and a layer of transparent conductive oxidation film on the surface of the ceramics. The invention further discloses a method for preparing the ceramic product. The transparent heat-reflective coating on the surface of the ceramic product provided by the invention does not contain macromolecular film-forming agent and has perfect conductivity property. And surface resistance of the coating can be below 100 omega / cm, resistivity is less than 1*10 -3omega,cm, and infrared reflectivity of the thin film can reach above 70 percent.

Description

Technical field [0001] The invention relates to a ceramic product with a transparent heat reflective coating on the surface and a preparation method thereof. Background technique [0002] At present, the energy consumption of buildings in my country accounts for about 1 / 3 of the total primary energy consumption of the society. With the development of social economy and the improvement of people's living standards, the proportion of building energy consumption will continue to increase, and the energy utilization rate is still very low. , my country's building heating energy consumption is about three times that of developed countries, of which external walls are 4 to 5 times, roofs are 2.5 to 5.5 times, and exterior windows are 1.5 to 2.2 times. This shows that my country has a lot of work to do in terms of building energy conservation. [0003] The exterior walls of buildings are mainly concrete and brick wall structures, and these materials have a wide range of light absorption...

Claims

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Application Information

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IPC IPC(8): C04B41/89
Inventor 徐雪青徐刚张英王银铃何云富
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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