Radiation refrigeration surface based on fiber array and preparation method and application thereof

A radiation refrigeration and fiber technology, applied in the field of radiation refrigeration surface and its preparation, can solve the problems of complex preparation process of optical thin films and metamaterials, poor adhesion of porous materials, low infrared emissivity, etc. The effect of low cost and simple process

Pending Publication Date: 2022-06-24
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The radiant cooling surface based on fiber arrays provided by the present invention solves the disadvantages of other types of radiative cooling materials in the prior art (such as complex and expensive preparation processes of optical films and metamaterials; poor adhesion and thicker porous materials, etc.), At the same time, it improves the shortcomings of the traditional high-reflective surface with low infrared emissivity

Method used

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  • Radiation refrigeration surface based on fiber array and preparation method and application thereof
  • Radiation refrigeration surface based on fiber array and preparation method and application thereof
  • Radiation refrigeration surface based on fiber array and preparation method and application thereof

Examples

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Embodiment 1

[0074] In this embodiment, a radiative cooling surface based on a fiber array is provided (the schematic diagram is as follows: figure 1 shown), the fiber array-based radiative cooling surface includes a bottom glue layer 1 and a top fiber array structure 2 . Wherein, the preparation raw materials of the bottom adhesive layer include rutile TiO with a mass ratio of 4:10:1 2 Nanoparticles, silicone rubber and silicone rubber curing agent, rutile TiO 2 The diameter of the nanoparticles is 230 nm, the type of silicone rubber and silicone rubber curing agent is Sylgard 184, and the thickness of the bottom adhesive layer is 150 μm; the top fiber array structure is composed of white nylon fibers, the diameter of the white nylon fibers is 14 μm, and the length is 150 μm. 400-600μm, the areal density of the top fiber array structure is 20g / m 2 .

[0075] The fiber array-based radiative cooling surface of this embodiment is prepared by the following method:

[0076] (1) Weigh 2g of...

Embodiment 2

[0090] The only difference between this example and Example 1 is that the rutile TiO 2 The diameter of the nanoparticles is 50 nm.

Embodiment 3

[0092] The only difference between this example and Example 1 is that the rutile TiO 2 The diameter of the nanoparticles is 500 nm.

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Abstract

The invention provides a radiation refrigeration surface based on a fiber array and a preparation method and application of the radiation refrigeration surface. The radiation refrigeration surface based on the fiber array comprises a bottom adhesive layer and a top fiber array structure. And the bottom adhesive layer is prepared from the following raw materials: a polymer matrix, inorganic filler particles and a curing agent. The radiation refrigeration surface based on the fiber array provided by the invention has a series of advantages of high sunlight reflectivity, high mid-infrared emissivity, strong adhesive force with a substrate and the like, and has excellent radiation refrigeration performance. The radiation refrigeration surface based on the fiber array can be used for building outer walls, thermal control mechanisms and the like to adjust the internal temperature of the building outer walls, the thermal control mechanisms and the like. In addition, the radiation refrigeration surface based on the fiber array is simple in preparation process, low in cost and suitable for large-area production and preparation.

Description

technical field [0001] The invention belongs to the technical field of radiation refrigeration, and relates to a radiation refrigeration surface based on a fiber array and a preparation method and application thereof. Background technique [0002] Radiant cooling is a common natural phenomenon. Radiation refrigeration materials refer to a class of materials that use their own outward thermal radiation to transfer heat and reduce their own temperature. According to Planck's law of thermal radiation, any object has the characteristic of radiation, and it radiates energy to the outside world all the time. The temperature of space outside the atmosphere is extremely low, which provides an ideal cold source for radiative cooling. But not all materials can be radiative coolers, because the earth is surrounded by the atmosphere, most wavelengths of infrared radiation will be absorbed by the atmosphere, and this part of the energy will be returned to the object through radiation, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B23/00
CPCF25B23/003
Inventor 孙帅沈忱张晖张忠
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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