Radiation refrigeration composite fabric, preparation method and device

A composite fabric and refrigeration technology, applied in lamination devices, chemical instruments and methods, textiles and papermaking, etc., can solve problems such as poor air permeability

Pending Publication Date: 2021-04-30
松湖神健科技(东莞)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a radiation cooling composite fabric, a preparation method and a device to solve the problem of poor air permeability of existing radiation cooling materials

Method used

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  • Radiation refrigeration composite fabric, preparation method and device
  • Radiation refrigeration composite fabric, preparation method and device
  • Radiation refrigeration composite fabric, preparation method and device

Examples

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Comparison scheme
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preparation example Construction

[0042]Another aspect of the present invention also provides a method of producing a radiation cooled coincid fabric, the preparation method comprising:

[0043]Tethasic acid tetraeth ester solution and alkaline solutions are disposed; and

[0044]The silicate solution and the alkaline solution were attached to the surface of the silicate in situ hydrolysis reaction by impregnating or spraying, and the reaction time was 1-10 min, and the in situ hydrolyzed reaction product is a silica microsphere. The excess moisture and solvent drying, that is, the surface is uniformly covered with a silica microspheres such as silica microspheres.

[0045]In the present embodiment, by weighing a certain mass of silicate is dissolved in a certain mass-absorbent ethanol, a concentration of tetraeth ethanol solution is disposed, placed in a pressure spray gun; A certain volume of concentrated ammonia water (25% mass fraction) is added to a certain amount of pure water dilution, configured to be a concentration...

Embodiment 1

[0050]Example 1: 30 g of ethyl silicate and 120 g of anhydrous ethanol were weighted with a beaker, and the tetraethyl silicate was mixed in anhydrous ethanol, and the tetraethyl ethanol solution of 150 g of a concentration of 20% was configured. The 30 g of the 30g mass fraction was 12% concentrated water was weighed with a beaker, and 120 g of a mixture was mixed, and a 150 g of a concentration of 5% ammonia solution was configured. A nylon cloth that is 40 g from 1m × 1m is removed, that is, the amount of silicate solution and the spray amount of the ammonia solution of silicate is 150 g / m.2, The four ethyl silicate solution and the ammonia solution are disposed in the air pressure spray, respectively, and evenly sprayed on the nylon cloth. After 1min hydrolysis, drying under 60 ° C, resulting radiation cooled composite fabric . The silica microspheres are observed by microscopy and measured their size. According to national standard GB-T 5453-1997, "Determination of textile fa...

Embodiment 2

[0052]Example 2: The concentration of tetraeth ester solution in this embodiment was 50%, and the remaining conditions were the same as those in Example 1.

[0053]The average size of the silica microspheres prepared in this example is 2000 nm, and the gas permeability of the composite fabric is 146ml / (cm2· MIN), the infrared light emission rate of 8-13 μm in wavelength is 87%, the radiation power is 91w / m2The temperature drop is 8 ° C. As compared with the Example 1, it can be found that increase the concentration of the tetraeth ester solution of the silicate solution, the obtained silica microsphere size is increased, and the gas permeability of the composite fabric, the infrared light emission rate and the radiation power are lowered, and the cooling effect is deteriorated. At the same time, the flexibility of the composite fabric is deteriorated.

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Abstract

The invention relates to the technical field of new materials, in particular to a radiation refrigeration composite fabric, a preparation method and a device. The radiation refrigeration composite fabric comprises a fiber fabric; the silicon dioxide microspheres uniformly cover the surface of the fiber fabric; and the silicon dioxide microspheres are prepared from a tetraethyl silicate solution with the concentration of 5-50% and an alkaline solution with the concentration of 1-10% through a hydrolysis reaction. The preparation process is simple, easy to implement and low in cost, and the prepared radiation refrigeration composite fabric is high in emissivity to infrared light with the wavelength of 8-13 microns, obvious in cooling effect, good in flexibility and air permeability, excellent in comprehensive performance and capable of being widely applied to sun-proof clothes, beach umbrellas, tents, automobile protective covers and the like. The silicon dioxide microspheres are directly formed on the surfaces of the fibers through in-situ hydrolysis, have high bonding strength with the fibers and are not easy to fall off, so that the problem that powder is easy to fall off when silicon dioxide microsphere turbid liquid is conventionally and directly used for dipping is solved, which is the greatest benefit of the invention.

Description

Technical field[0001]The present invention relates to the field of new materials, and in particular, to a radiation cooled composite fabric, a preparation method and apparatus.Background technique[0002]As global warming trends continue to intensify, cooling technology is increasingly concerned, using air conditioning cooling is a usual means, thereby causing a large amount of energy consumption. Air conditioning and other active cooling technologies have high energy consumption, so passive cooling techniques have been spawned, where radiation is colder. Since the space outside the atmosphere is close to absolute zero, this is a natural huge cold storage that allows the heat on the ground to discharge the space in the form of electromagnetic waves, and achieves no energy consuming. The electromagnetic wavelength of 8-13 μm is high in the atmosphere. When there is no other obstruction, radiation is radiated outward space, which does not cause a temperature rise of the atmosphere near ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/34B32B27/12B32B27/36B32B27/30B32B27/02B32B9/02B32B9/04B32B3/08B32B37/24B32B38/16D06M11/79D06M101/34
CPCB32B27/32B32B27/12B32B5/02B32B5/26B32B3/08B32B37/24B32B38/164D06M11/79B32B2037/243B32B2255/02B32B2255/24B32B2262/0261B32B2262/0276B32B2262/0253B32B2262/062B32B2307/724D06M2101/34
Inventor 于墨昕
Owner 松湖神健科技(东莞)有限公司
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