A radiation cooling composite coating with structural color, application and preparation method

A radiation cooling and composite coating technology, applied in the field of spectrally selective nanoparticles, can solve the problems of single color, poor color stability, easy fading, etc., and achieve the effect of low accuracy requirements and high color stability.

Active Publication Date: 2022-05-03
SHANGHAI JIAOTONG UNIV
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Problems solved by technology

The radiation cooling composite coating can be prepared on a large scale, and solves the problem of limited application space of the existing conventional radiation cooling structure due to single color, and at the same time solves the poor color stability of the existing pigment-forming radiation cooling structure, which is easy to fade and refrigerates. The problem of poor performance

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  • A radiation cooling composite coating with structural color, application and preparation method
  • A radiation cooling composite coating with structural color, application and preparation method
  • A radiation cooling composite coating with structural color, application and preparation method

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0038] In the present invention, a radiation cooling composite coating with structural color is composed of PMMA resin with a thickness of 2 mm and embedded randomly distributed reflective nanoparticles for reflecting sunlight and color-forming nanoparticles for presenting structural color Composed together. Preferably, select rutile TiO 2 particles as reflective nanoparticles, TiO 2 One of @Ag core-shell nanoparticles and pure Ag nanoparticles is used as color-forming nanoparticles. Among them, in t...

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Abstract

The invention discloses a radiation cooling composite coating with structural color, its application and a preparation method, wherein, the radiation cooling composite coating includes a base layer, reflective nanoparticles and color-forming nanoparticles embedded in the base layer; wherein, The reflection valleys jointly realized by the broadband high reflection of the reflective nanoparticles and the local plasmon resonance of the color-forming nanoparticles present the structural color of the radiative cooling composite coating. The radiation cooling composite coating has strong reflection ability in the solar light band (0.3-4 μm), and the reflectivity in most of the solar light bands is as high as 0.95. The emissivity in the infrared band (4-24μm) can be continuously above 0.9, and the emissivity in most infrared bands can be as high as 0.95. The invention can overcome the limited application occasions of the current radiant cooling coating due to single color, and thus has broad application prospects in the fields of building energy saving, outdoor objects and surface heat management of electronic products, and the like.

Description

technical field [0001] The invention belongs to the field of spectrally selective nanoparticles, in particular to a radiation refrigeration composite coating with structural color, its application and its preparation method. Background technique [0002] With the development of modern society, human consumption and demand for energy are increasing day by day. At present, the energy problem has evolved into a global problem. At the same time, due to the aggravation of climate problems such as global warming and the greenhouse effect, the global demand for refrigeration continues to rise. The cooling process of active refrigeration equipment, such as air conditioners and fans, inevitably consumes a lot of energy. [0003] Radiation cooling is a high-emissivity structure covering the infrared band (especially the atmospheric window bands of 8-13 μm and 16-24 μm) on the object to realize the radiation heat exchange between the object and the low-temperature outer space and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/12C09D5/33C09D7/61
CPCC09D133/12C09D5/004C09D7/61C08K2201/011C08K2003/2241C08K2201/003C08K2003/2244C08K2003/221C08K2003/0806C08K3/22C08K3/08Y02P20/10
Inventor 赵长颖金圣皓王博翔
Owner SHANGHAI JIAOTONG UNIV
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