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Radiation cooling film and preparation method thereof

A radiation refrigeration and film technology, applied in the field of radiation refrigeration film and its preparation, can solve the problem that the refrigeration effect of the radiation refrigeration film needs to be further improved, and achieve the effects of excellent weather resistance and high light transmittance

Inactive Publication Date: 2019-08-16
NINGBO RADI COOL ADVANCED ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the cooling effect of the existing radiative cooling film needs to be further improved.

Method used

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  • Radiation cooling film and preparation method thereof
  • Radiation cooling film and preparation method thereof
  • Radiation cooling film and preparation method thereof

Examples

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preparation example Construction

[0040] The present invention also provides a method for preparing a radiation cooling film, comprising the following steps:

[0041] S1, providing a substrate 3, and disposing a reflective layer 2 on the substrate 3;

[0042] S2, coating a functional coating on the reflective layer 2, the functional coating includes a cross-linked resin and radiation cooling particles dispersed in the cross-linked resin;

[0043] S3, curing the cross-linked resin to form a functional coating 1 .

[0044] In some embodiments, the cross-linked resin is one or more of acrylic resin, polyurethane resin, epoxy resin, silicone resin, and fluorine-containing resin.

[0045] In some embodiments, step S3 cures the cross-linked resin by heating and / or light irradiation.

[0046] The method for arranging the reflective layer 2 on the substrate 3 can refer to the prior art, for example, a metal reflective film is prepared by vacuum evaporation, sputtering evaporation, chemical vapor deposition, etc., or...

Embodiment 1

[0048] A radiation cooling film is provided, prepared by the following method:

[0049] (1) A PET substrate is provided, and a silver reflective layer is plated on the substrate, and the thickness of the reflective layer is 20nm;

[0050] (2) Provide functional coatings, which include acrylic resin (commercially available) with a mass ratio of 19:1 and SiO with a particle size of 6±1 μm 2 radiative cooling particles;

[0051] (3) Coating the functional coating on the reflective layer, and curing by ultraviolet light to form a functional coating with a thickness of 2 μm.

Embodiment 2

[0053] A radiation cooling film is provided, prepared by the following method:

[0054] (1) Provide a PET substrate, plate a silver reflective layer on the substrate, and the thickness behind the reflective layer is 50nm;

[0055] (2) Provide functional coatings, which include polyurethane resin (commercially available) with a mass ratio of 15:1 and SiC radiation cooling particles with a particle size of 10±1 μm;

[0056] (3) Coating the functional coating on the reflective layer and curing to form a functional coating with a thickness of 50 μm.

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Abstract

The invention discloses a radiation cooling film and a preparation method thereof. The radiation cooling film comprises a functional coating, a reflecting layer and a substrate layer, wherein the functional coating, the reflecting layer and the substrate layer are sequentially arranged from top to bottom, the functional coating is formed by curing a cross-linking type resin, radiation cooling particles are dispersed in the resin of the functional coating, the transmittance of the functional coating at a wave band of 300-2500 nm is more than 80%, the thickness of the functional coating is 2-100[mu]m, and the radiation cooling film has emissivity of 70-100% at a wave band of 7-14 [mu]m, and has reflectivity of more than 80% at a wave band of 300-2500 nm. According to the present invention,the radiation cooling film has excellent weather resistance, the functional coating has high light transmittance, and the reflectivity of the reflecting layer below the functional coating is less affected.

Description

technical field [0001] The invention relates to the technical field of radiation refrigeration, in particular to a radiation refrigeration film and a preparation method thereof. Background technique [0002] Radiation refrigeration technology, as a means of temperature regulation without energy consumption, has good practicability and can enable human beings to develop harmoniously in terms of environmental protection and energy utilization, and will bring about major changes in the energy field. [0003] Any object whose temperature is higher than absolute zero will produce electromagnetic radiation. With the different conditions such as the material, molecular structure and temperature of the radiating object, the wavelength of the radiation is also different. In the infrared radiation band, in terms of the nature of radiation, when the atoms or atomic groups in a molecule change from a high-energy vibration state to a low-energy vibration state, infrared radiation in the...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08L67/02C09D133/04C09D175/04C09D163/00C09D183/04C09D127/12C09D7/61F25B23/00
CPCC08J7/042C09D133/04C09D175/04C09D163/00C09D183/04C09D127/12C09D7/61F25B23/003C08J2367/02C08J2433/04C08J2475/04C08J2463/00C08J2483/04C08J2427/12C08K2201/003C08K2003/2241C08K2003/3045C08K2003/265C08J7/0427C08K3/36C08K3/34C08K3/22C08K3/30C08K3/26
Inventor 徐绍禹其他发明人请求不公开姓名
Owner NINGBO RADI COOL ADVANCED ENERGY TECH CO LTD
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