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Method for preparing radiation cooling coating

A technology of heat-dissipating coatings and aqueous solutions, applied in the direction of polyester coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve problems such as unsatisfactory use effects and weak surface adhesion, and achieve excellent protection and decoration functions. Simple process and good self-cleaning effect

Inactive Publication Date: 2012-12-26
青岛太阳能电力研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, common radiation cooling and heat dissipation coatings are generally used for heat dissipation of components of electronic products such as CPUs and heat dissipation of LED lamps. The requirements for the medium for painting are relatively high, and the surface adhesion of rough and loose objects such as fibers or wood is not good. Strong, the effect is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of a radiation-cooled heat-dissipating coating in this embodiment comprises the following steps:

[0024] (1) Preparation of zinc salt aqueous solution: mix zinc salt with organic surfactant to make 0.5mol aqueous solution, wherein zinc salt includes Zn(NO 3 ) 2 ·6H 2 O, ZnCl and zinc acetate, organic surfactants include triethanolamine, hexamethylenetetramine.

[0025] (2) Adjust the pH value: drop NaOH aqueous solution into the zinc salt solution until the pH reaches 8; the concentration of the zinc salt solution is 0.5 mol, and the concentration of the NaOH solution is 0.5 mol.

[0026] (3) Preparation of flower-shaped zinc oxide: heating the pH-adjusted zinc salt solution to 70°C, reacting for 60 minutes, washing and drying to obtain flower-shaped zinc oxide powder.

[0027] (4) Make heat-dissipating paint: disperse the above-prepared zinc oxide powder into alkyd resin at a ratio of 20%, stir, grind, and react.

Embodiment 2

[0029] A preparation method of a radiation-cooled heat-dissipating coating in this embodiment comprises the following steps:

[0030] (1) Preparation of zinc salt aqueous solution: mix zinc salt with organic surfactant to make 1.5mol aqueous solution, wherein zinc salt includes Zn(NO 3 ) 2 ·6H 2 O, ZnCl and zinc acetate, organic surfactants include triethanolamine, hexamethylenetetramine.

[0031] (2) Adjust the pH value: drop KOH aqueous solution into the zinc salt aqueous solution until the pH reaches 9; the concentration of the zinc salt aqueous solution is 1.5 mol, and the concentration of the KOH aqueous solution is 1.5 mol.

[0032] (3) Preparation of flower-shaped zinc oxide: heating the pH-adjusted zinc salt solution to 85°C, reacting for 40 minutes, washing and drying to obtain flower-shaped zinc oxide powder.

[0033] (4) Make heat-dissipating paint: disperse the above-prepared zinc oxide powder into amino resin at a ratio of 15%, stir, grind, and react.

[0034]...

Embodiment 3

[0038] A preparation method of a radiation-cooled heat-dissipating coating in this embodiment comprises the following steps:

[0039] (1) Preparation of zinc salt aqueous solution: mix zinc salt with organic surfactant to make 2.0mol aqueous solution, wherein zinc salt includes Zn(NO 3 ) 2 ·6H 2 O, ZnCl and zinc acetate, organic surfactants include triethanolamine, hexamethylenetetramine.

[0040] (2) Adjusting the pH value: drop the aqueous ammonia solution into the zinc salt solution until the pH reaches 10; the concentration of the zinc salt solution is 2.0 mol, and the concentration of the ammonia solution is 2.0 mol.

[0041] (3) Preparation of flower-shaped zinc oxide: heating the pH-adjusted zinc salt solution to 95°C, reacting for 10 minutes, washing and drying to obtain flower-shaped zinc oxide powder.

[0042] (4) Make heat-dissipating paint: disperse the above-prepared zinc oxide powder into acrylic resin at a ratio of 1%, stir, grind, and react.

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PUM

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Abstract

The invention provides a method for preparing radiation cooling coating. The method comprises the following steps of: (1) preparing a zinc salt solution; (2) adjusting a pH (Potential Of Hydrogen) value; (3) preparing flower-like zinc oxide; and (4) preparing the cooling coating. The radiation cooling coating produced by the method is not easily affected by a coating medium, is easy to coat, convenient to construct, wide in application range, water-proof, insulated and corrosion-resistant, and convenient to use, has good self-cleaning property when playing the radiation cooling role, has high-radiation cooling property, and can be used to coat a thin layer and brush a thick layer. Meanwhile, the coating has excellent protecting and decorating functions.

Description

Technical field [0001] The preparation method of the invention involves a coating method, which specifically refers to the preparation method of radiating cooling and cooling coatings. Background technique [0002] Radiation cooling and cooling coating is a coating that passes through the heat and heat insulation through the radiation zone. The temperature-resistant amplitude is -50-600 ° C. The coating is directly painted on the surface of the object that is cooling and cooling.The μM infrared wave length automatically radiates the heat on the object on the atmospheric space, reducing the surface and internal temperature of the object, and the heat dissipation and cooling are obvious.Radiation cooling and cooling coatings have high radiation cooling properties. It is more convenient to use. It can be painted thin layer and can also be painted thickly. The coatings have excellent protection and decorative functions at the same time. [0003] At present, common radiation cooling h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C09D161/20C09D133/00C09D163/00C09D175/04C09D183/04C09D127/12C09D7/12
Inventor 于庆先孟祥忠肖文光王强
Owner 青岛太阳能电力研究院有限公司
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