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A radiation cooling coating with self-cleaning function and its preparation method

A self-cleaning and coating technology, applied in coatings, biocide-containing paints, anti-fouling/underwater coatings, etc., can solve the problems of lack of self-cleaning function, reduce the cooling effect of radiation cooling coatings, etc., to achieve Good lighting performance, improved cooling effect, low cost effect

Active Publication Date: 2021-09-03
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the traditional radiative cooling coating lacks the self-cleaning function, which makes dust and dirty substances easily adhere to the surface of the radiative cooling coating, which reduces the cooling effect of the radiative cooling coating.

Method used

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  • A radiation cooling coating with self-cleaning function and its preparation method
  • A radiation cooling coating with self-cleaning function and its preparation method
  • A radiation cooling coating with self-cleaning function and its preparation method

Examples

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Effect test

Embodiment 1

[0041] A radiation cooling coating with self-cleaning function, the radiation cooling coating includes a bottom layer binder and a radiator and hydrophobic nanoparticles covered on the bottom layer binder, the infrared emission peak of the radiator is It is located in the infrared radiation band range of 8-13 μm and covers at least one band interval in the range of 8-13 μm.

Embodiment 2

[0043] A radiation cooling coating with self-cleaning function, the radiation cooling coating includes a bottom layer binder and radiators and hydrophobic nanoparticles covered on the bottom layer binder, the radiation body has a particle size of It consists of inorganic nanoparticles I with a particle size of 0.4-0.9 μm, or composed of inorganic nanoparticles II with a particle size of 1-4 μm, or composed of inorganic nanoparticles I with a particle size of 0.4-0.9 μm and inorganic nanoparticles with a particle size of 1-4 μm. Particle II is composed of a certain volume ratio.

Embodiment 3

[0045] A radiation cooling coating with self-cleaning function, the radiation cooling coating includes a bottom layer binder and radiators and hydrophobic nanoparticles covered on the bottom layer binder, the radiation body has a particle size of Inorganic nanoparticles I with a particle size of 0.4-0.9 μm and inorganic nanoparticles II with a particle size of 1-4 μm are composed according to a volume ratio of 1:(3-5).

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Abstract

The invention belongs to the technical field of radiation cooling, and in particular relates to a radiation cooling coating with a self-cleaning function and a preparation method thereof. The body and the hydrophobic nanoparticles, the infrared emission peak of the radiator is located in the infrared radiation band range of 8-13 μm and covers at least one band interval in the range of 8-13 μm. The invention utilizes the high hydrophobicity of the nano-hydrophobic particles, so that the radiation cooling coating has a self-cleaning effect, and avoids the phenomenon that the cooling effect is reduced due to dust accumulation. The radiation cooling coating of the invention has high emissivity in the 8-13 μm waveband, high transmittance in the visible light waveband, good lighting performance, and can reduce energy absorption in other wavebands to ensure cooling effect. The invention further adopts two kinds of radiators with different particle sizes, which broadens the radiation range, radiates the ground heat to the outer space to the greatest extent, and improves the cooling effect.

Description

technical field [0001] The invention belongs to the technical field of radiation cooling, and in particular relates to a radiation cooling coating with self-cleaning function and a preparation method thereof. Background technique [0002] Global warming and energy crisis have become important issues restricting human development, and energy saving and emission reduction are important ways to solve the above problems. As a non-energy-consuming cooling method, radiative cooling has gradually attracted the attention of researchers. Radiation energy to outer space is an important mechanism for maintaining the temperature of the earth. The efficiency of radiative cooling depends on the spectral emissivity of the surface of the object. By adjusting the surface emission It can be an important passive cooling method and can be widely used in temperature regulation of buildings, electronic heat dissipation, and cooling of solar cells. Relying on the "atmospheric window" band (8-13μm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/16
CPCC08K3/36C08K2003/2241C08K2003/2248C08K2003/2272C08K2003/2296C08K2201/011C09D5/1687
Inventor 王富强程子明
Owner HARBIN INST OF TECH AT WEIHAI