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Solar energy heat absorption coating

A solar energy absorption and coating technology, applied in the field of solar collectors, can solve the problems of black nickel coating thermal stability, poor corrosion resistance, etc. Effect

Inactive Publication Date: 2014-04-23
GUANGXI CHAOXING SOLAR ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor thermal stability and corrosion resistance of black nickel coating, it is usually only suitable for low temperature solar thermal utilization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take 28 kg of acrylic resin with a concentration of 50%, 1.0 kg of carbon black, 4 kg of industrial grade enamel black, 1.1 kg of industrial grade chromium oxide green (Cr2O3), 15 kg of 800-mesh talcum powder (3MgO·4SiO2·H2O), 15 kg of 800-mesh precipitated sulfuric acid Barium (BaSO4) 8kg, industrial grade organic bentonite 0.6kg, concentration of 95% KH-550 silane coupling agent (H2N (CH2)3 Si(OC2H5)3) 0.2 kg, P104S dispersant 1.5 kg, concentration of 1% silicone oil 0.1 kg, industrial grade dibutyl phthalate (C16H22O4) 2 kg, industrial grade acetone (C3H6O) 6 kg, industrial grade butyl acetate (C6H12O2) 8 kg, industrial grade xylene (C8H10) 24.7kg.

[0025] Production method :

[0026] 1) Dilution of the coupling agent: add the coupling agent of the above formula amount into the container, then add half of the above formula amount of solvent, stir well and set aside;

[0027] 2) Pretreatment of the absorbent: add the absorbent in the above formula into the stainles...

Embodiment 2

[0032] Take 35kg of acrylic resin with a concentration of 50%, 2.4kg of carbon black for pigments, 9kg of industrial grade enamel black, 1.8 kg of industrial grade chromium oxide green, 18kg of 800 mesh talcum powder, 11kg of 800 mesh precipitated barium sulfate, and 0.6kg of industrial grade organic bentonite , 0.5kg of KH-550 silane coupling agent with a concentration of 95%, 1.9kg of P104S dispersant, 0.1kg of silicone oil solution with a concentration of 1%, 5kg of industrial grade dibutyl phthalate, 8 kg of industrial grade acetone, and Grade butyl acetate 10kg, industrial grade xylene 26.7kg.

[0033] Manufacturing method: with embodiment 1.

Embodiment 3

[0035] Take 50% acrylic resin 31kg, carbon black 1.8kg, industrial grade enamel black 6kg, industrial grade chromium oxide green 1.5kg, 800 mesh talcum powder 16kg, 800 mesh precipitated barium sulfate 9kg, industrial grade organic bentonite 0.6kg, Concentration of 95% KH-550 silane coupling agent 0.4 kg, P104S dispersant 1.7 kg, concentration of 1% silicone oil 0.1 kg, industrial grade dibutyl phthalate 3kg, industrial grade acetone 7 kg, industrial grade 9 kg of butyl acetate, 25.7 kg of industrial grade xylene.

[0036] Manufacturing method: with embodiment 1.

[0037] The fineness of the coating of the present invention is preferably limited to below 30um; the coating of the coating is used for solar energy absorption. The concentration of the acrylic resin can be in the range of 45%-55%, and the concentration of 50% is the best value; the concentration of the silicone oil can be in the range of 0.5%-1.5%, and the concentration of 1% is the best value , the talcum powder...

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PUM

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Abstract

The invention aims to provide a solar energy heat absorption coating which improves the defect of lower solar energy utilization rate of an existing solar energy absorption coating, is capable of converting solar energy into heat energy in a high efficiency manner, and is excellent in weather resistance and light and color retention properties.

Description

technical field [0001] The invention relates to a solar heat absorbing coating, which belongs to the field of solar heat collectors. Background technique [0002] Solar absorbing coatings have a great impact on the technical and economic performance of solar energy utilization. In order to improve the efficiency of solar energy devices and reduce costs, solar science and technology workers in various countries attach great importance to the research and development of solar absorbing coatings, and have developed a variety of coatings. has been used in production with good results. [0003] Electroplating coating is a mature technology of solar absorbing materials, which can be divided into black chromium coating or black nickel coating. The absorption ratio α and emission ratio ε of black chromium coating are 0.93-0.97 and 0.07 respectively. -0.15, α / ε is 6-13, with excellent spectral selectivity. The thermal stability and high temperature resistance of the black chrome co...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D5/32C09D7/12
Inventor 陆美玲孟沪生吴胜
Owner GUANGXI CHAOXING SOLAR ENERGY TECH
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