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Radiative cooling film with self-cleaning function, and preparation method thereof

A self-cleaning and cooling technology, applied in the field of radiation cooling, can solve the problems of lack of self-cleaning function of radiation cooling film, reduce the cooling effect of radiation cooling film, etc., achieve good lighting performance, improve cooling effect, widen Effect of Radiation Range

Active Publication Date: 2018-11-30
天佑(山东)新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Radiative cooling film with self-cleaning function, and preparation method thereof
  • Radiative cooling film with self-cleaning function, and preparation method thereof
  • Radiative cooling film with self-cleaning function, and preparation method thereof

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Embodiment 1

[0035] A radiative cooling film with a self-cleaning function, the radiative cooling film includes a base film and radiators and hydrophobic nanoparticles dispersed in the base film, the infrared emission peak of the radiator is located in the infrared range of 8-13 μm Within the radiation band range and at least cover a band interval within the range of 8-13 μm.

Embodiment 2

[0037] A radiative cooling film with self-cleaning function, the radiative cooling film includes a base film and radiators and hydrophobic nanoparticles dispersed in the base film, the radiator is composed of inorganic particles with a particle size of 0.4-0.9 μm Composed of nanoparticles I, 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 II with a particle size of 1-4 μm in a certain volume ratio composition.

Embodiment 3

[0039] A radiative cooling film with self-cleaning function, the radiative cooling film includes a base film and radiators and hydrophobic nanoparticles dispersed in the base film, the radiator is composed of inorganic particles with a particle size of 0.4-0.9 μm The nanoparticle I and the inorganic nanoparticle II with a particle diameter of 1-4 μm are composed in a volume ratio of 1:(3-5).

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Abstract

The invention especially relates to a radiative cooling film with a self-cleaning function and a preparation method thereof, belonging to the technical field of radiative cooling. The radiative cooling film comprises a base film and further comprises radiators and hydrophobic nanoparticles dispersed in the base film, wherein the infrared emission peaks of the radiators are in the infrared radiation band range of 8 to 13 [mu]m and covers at least one band interval in the range of 8 to 13 [mu]m. According to the invention, the high hydrophobicity of the hydrophobic nanoparticles is utilized so as to allow the radiative cooling film to have self-cleaning effect, so the phenomenon of reduction in cooling effect due to dust accumulation is avoided. The radiative cooling film of the invention has high emissivity in the band of 8 to 13 [mu]m, high transmittance in a visible light band and good lighting performance, and can reduce the absorption of energy in other bands by the object to ensurecooling effect. Furthermore, the radiators with two different particle sizes are adopted in the invention, so a radiation range is broadened, and ground heat is maximally radiated to the outer space,thereby improving cooling effect.

Description

technical field [0001] The invention belongs to the technical field of radiation cooling, and in particular relates to a radiation cooling film with self-cleaning function and a preparation method thereof. Background technique [0002] Since the beginning of the 21st century, energy issues have attracted much attention, and energy conservation and consumption reduction have also become the focus of attention. Among them, energy conservation and consumption reduction in the field of refrigeration and temperature control is an important research field. As a cooling method without energy consumption, radiative cooling has gradually attracted the attention of researchers. Its principle is the fourth power law of radiative heat transfer in heat transfer. The temperature of the space outside the atmosphere is close to absolute zero, and it is an ideal cooling source. If the direct radiation heat exchange between the ground object and the space cold source close to 0K will achieve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/00C08L27/12C08L23/08C08L23/20C08K3/36C08K3/22C08K3/08C08J5/18
CPCC08J5/18C08J2323/08C08J2323/20C08J2327/12C08J2333/00C08K3/36C08K2003/0831C08K2003/2241C08K2003/2248C08K2003/2272C08K2201/011
Inventor 王富强程子明龚大洋
Owner 天佑(山东)新能源科技有限公司
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