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Efficient colored heat-insulating and cooling coating as well as preparation method and application thereof

A thermal insulation cooling and color technology, applied in coatings, polyester coatings, polyamide coatings, etc., can solve the problems of insufficient heat insulation and cooling effects, limited sunlight reflection ability, poor stain resistance, etc., and achieve heat insulation and cooling effect, avoiding the increase of surface density, and the effect of excellent cooling performance

Pending Publication Date: 2022-06-17
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the requirements of high solar reflection efficiency, the thermal insulation coating is usually processed into white. However, the existing white thermal insulation coating still has the following defects: affected by the composition and structure of the material, the white thermal insulation coating itself cannot The reflective ability is limited, resulting in a large gap between the overall heat insulation effect and the actual demand. At the same time, the existing white heat insulation coating is difficult to meet the decorative requirements of thermal management materials applications, and there are poor stain resistance, Easy to cause defects such as light pollution
The existing color cooling paint contains: 25-35% self-made epoxy-modified acrylic hybrid emulsion, 5-10% rutile titanium dioxide, 2-5% photocatalyst, 6-12% toning pigment, and hollow glass microspheres 12-20%, far-infrared nanomaterials 3-6%, zinc oxide 2-5%, fumed silicon dioxide 2-4%, additives 1-3%, deionized water 25-35%, which mainly depends on the function However, this kind of color cooling coating still has the following defects: the spectral selectivity is not excellent enough (the visible light band reflectance of the army green coating is low, and the near infrared band reflectance is basically no more than 75%), heat insulation The cooling effect is not outstanding enough, the filler stability and uniformity are not good, etc., which greatly limit the wide application of color cooling coatings

Method used

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  • Efficient colored heat-insulating and cooling coating as well as preparation method and application thereof
  • Efficient colored heat-insulating and cooling coating as well as preparation method and application thereof
  • Efficient colored heat-insulating and cooling coating as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The utility model relates to a high-efficiency color heat-insulating and cooling coating, which uses a spectrally selective porous film as a bottom layer, an infrared transparent color film is arranged on the spectrally selective porous film, and the spectrally selective porous film is a polymer porous film.

[0057] In this embodiment, the thickness of the infrared transparent color film is 30 μm, and the color of the infrared transparent color film is medium green MG1151, which is an infrared transparent medium green film. It is prepared after curing. Specifically, the yellow dye in the solvent, the solvent scarlet dye, the solvent emerald green dye, and the solvent black dye are prepared into dye liquors of different colors, and then the above dye liquors are mixed and tinted to meet the requirements of the Lab value. Transparent dye liquor and acrylic resin BS-963 are prepared after curing.

[0058]In this embodiment, the spectrally selective porous film is formed b...

Embodiment 2

[0072] A preparation method of a high-efficiency color thermal insulation and cooling coating, the steps are basically the same as those in Example 1, the difference is only that: in step (2), the thickness of the spectrally selective porous film is 420 μm.

[0073] After testing, the solar reflectance of the high-efficiency color thermal insulation and cooling coating is 40.32%, the maximum temperature of the backside of the coating material is 57.2°C, the reflectance is significantly lower than that of Example 1, and the temperature of the backside is significantly higher than that of Example 1, because The role of the spectrally selective porous film is to reflect sunlight, and its reflectivity is heavily dependent on the thickness of the film. Reducing the film thickness will lead to a significant decrease in the overall sunlight reflectivity and thermal insulation performance of the composite coating.

Embodiment 3

[0075] A preparation method of a high-efficiency color thermal insulation and cooling coating, the steps are basically the same as those in Example 1, the only difference is: in step (2), the thickness of the spectrally selective porous film is 1200 μm.

[0076] After testing, the solar reflectance of the high-efficiency color thermal insulation and cooling coating is 54.05%, the maximum temperature of the back of the coating material is 44.0°C, the reflectivity is slightly higher than that of Example 1, and the temperature of the backside is slightly lower than that of Example 1.

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Abstract

The invention discloses an efficient colored heat-insulating and cooling coating as well as a preparation method and application thereof, the efficient colored heat-insulating and cooling coating takes a polymer porous film as a bottom layer, and an infrared transparent colored film is arranged on the polymer porous film. The preparation method comprises the following steps: preparing the polymer porous film and preparing the infrared transparent color film on the polymer porous film. The efficient colored heat-insulating and cooling coating has the advantages of being adjustable in appearance color, high in sunlight reflecting capacity, good in heat-insulating and cooling effect and the like, the coating is attached to the surface of a base body needing temperature adjustment and the skin surfaces of animals and human bodies in a covering, coating or pasting mode and the like, the color requirements of city appearance, pollution prevention and the like are met, and meanwhile the heat-insulating and cooling effects are good. The efficient cooling effect can be shown, refrigeration energy consumption is greatly reduced, the use value is high, and the application prospect is good. The preparation method has the advantages of being simple and easy to implement, low in production cost, high in film forming efficiency and the like, is suitable for preparing a large-area coating material and is beneficial to industrial application.

Description

Technical field [0001] The invention belongs to the technical field of polymer materials and relates to a high-efficiency color heat-insulating and cooling coating and its preparation method and application. Background technique [0002] Studies have shown that radiative cooling can theoretically achieve a cooling effect of 58°C, provided that the material must have strict spectral selectivity, that is, it only absorbs 100% of the infrared heat in the 8-13 μm band, and does not absorb incident light in other bands, especially the solar band. Be 100% reflective. In order to meet the requirements of high solar reflection efficiency, heat-insulating coatings are usually processed into white color. However, existing white heat-insulating coatings still have the following defects: Affected by the material composition and structure, the white heat-insulating coating itself is not exposed to sunlight. The reflective ability is limited, resulting in a large gap between the overall ...

Claims

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Application Information

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IPC IPC(8): C08J9/36C09D5/33C09D133/00C09D163/00C09D127/12C09D177/00C09D127/06C09D167/08C09D181/06C09D181/10C09D179/08C09D183/04C08L27/16C08L67/02C08L27/06C08L83/04
CPCC08J9/365C09D5/004C09D133/00C09D163/00C09D127/12C09D177/00C09D127/06C09D167/08C09D181/06C09D181/10C09D179/08C09D183/04C08J2327/16C08J2367/02C08J2327/06C08J2383/04C08J2433/00C08J2463/00C08J2427/12C08J2477/00C08J2427/06C08J2467/08C08J2481/06C08J2481/10C08J2479/08C08J2483/04
Inventor 王璟谢敏安一卓楚增勇孙骏宇纪澄孙翔宇王晓萌
Owner NAT UNIV OF DEFENSE TECH
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