Superhydrophobic daytime passive radiation cooling fabric and preparation method thereof

A radiative refrigeration and superhydrophobic technology, which is applied to plant fibers, textiles, papermaking, coatings, etc., can solve the problems of high cost, complicated preparation methods, and poor cooling performance, and achieve high-efficiency radiative refrigeration, simple preparation process, and excellent performance. Effect of spectrally selective properties

Active Publication Date: 2020-09-01
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The invention provides a superhydrophobic daytime passive radiation refrigeration fabric and a preparation method thereof, which overcomes the problems of poor coo

Method used

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  • Superhydrophobic daytime passive radiation cooling fabric and preparation method thereof
  • Superhydrophobic daytime passive radiation cooling fabric and preparation method thereof
  • Superhydrophobic daytime passive radiation cooling fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) The mass fraction of the aluminum phosphate aqueous dispersion was prepared to be 1.0 wt%. At this time, 0.50 g of the above-mentioned aluminum phosphate radiation particles were weighed and dispersed in deionized water by magnetic stirring to form a 50 g aluminum phosphate aqueous dispersion. Then add 0.01 g of silane coupling agent KH550, and stir magnetically at room temperature for 24 hours to obtain the daytime passive radiation cooling radiation particle functional coating required for the preparation of spectrally selective reflection / radiation coating.

[0056] (2) According to the polymer mass ratio of the superhydrophobic coating, 3g of PDMS polymer was weighed and dissolved in 30mL THF solution, and ultrasonically dispersed to obtain the superhydrophobic polymer functional coating required for the preparation of the superhydrophobic coating.

[0057] (3) The above-mentioned daytime passive radiation spectrum selective coating and superhydrophobic coating a...

Embodiment 2

[0059] (1) The mass fraction of the aluminum phosphate aqueous dispersion was prepared to be 2.0 wt%, and 1.0 g of the above-mentioned aluminum phosphate radiation particles were weighed and dispersed in deionized water by magnetic stirring to form 50 g of the aluminum phosphate aqueous dispersion. Then add 0.02 g of silane coupling agent KH550, and stir magnetically at room temperature for 24 hours to obtain the daytime passive radiation cooling radiation particle functional coating required for the preparation of spectrally selective reflection / radiation coating.

[0060] (2) According to the polymer mass ratio of the superhydrophobic coating, 3g of PDMS polymer was weighed and dissolved in 30mL THF solution, and ultrasonically dispersed to obtain the superhydrophobic polymer functional coating required for the preparation of the superhydrophobic coating.

[0061] (3) On the surface of ordinary cotton fabrics, the daytime passive radiation spectrum selective coating and the s...

Embodiment 3

[0063] (1) The mass fraction of aluminum phosphate aqueous dispersion was prepared to be 3.0 wt%. 1.5 g of the above-mentioned aluminum phosphate radiation particles were weighed and dispersed in deionized water by magnetic stirring to form 50 g of aluminum phosphate aqueous dispersion. Then add 0.03 g of silane coupling agent KH550, and stir magnetically at room temperature for 24 hours to obtain the daytime passive radiation cooling radiation particle functional coating required for the preparation of spectrally selective reflection / radiation coating.

[0064] (2) According to the polymer mass ratio of the superhydrophobic coating, 3g of PDMS polymer was weighed and dissolved in 30mL THF solution, and ultrasonically dispersed to obtain the superhydrophobic polymer functional coating required for the preparation of the superhydrophobic coating.

[0065] (3) On the surface of ordinary cotton fabrics, the daytime passive radiation spectrum selective coating and the superhydropho...

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Abstract

The invention discloses a superhydrophobic daytime passive radiation cooling fabric. The superhydrophobic daytime passive radiation cooling fabric comprises a fiber fabric, a daytime passive radiationcoating and a superhydrophobic coating, wherein the surface of the fiber fabric is coated with the daytime passive radiation coating and the superhydrophobic coating sequentially; the daytime passiveradiation coating is aluminum phosphate radiation particle coating; and the aluminum phosphate radiation particle coating has high reflection to visible light-near-infrared sunlight and has high emissivity in an atmospheric window of 8-13 [mu]m. The invention further discloses a preparation method of the superhydrophobic daytime passive radiation cooling fabric. The superhydrophobic daytime passive radiation cooling fabric is formed by multi-layer functional coatings through composite assembly, so that an ordinary fiber fabric has excellent spectrum-selectivity characteristics of high reflection to visible-near-infrared visible light and infrared intense radiation in the atmospheric window (8-13 [mu]m); then efficient radiation cooling under sunlight can be achieved; and meanwhile, the superhydrophobic coating on the outermost layer enables the fiber fabric to have excellent antifouling and self-cleaning effects.

Description

technical field [0001] The invention relates to the technical field of superhydrophobic daytime radiation refrigeration materials, in particular to a superhydrophobic daytime passive radiation refrigeration fabric and a preparation method thereof. Background technique [0002] Generally speaking, for most cities in equatorial regions and subtropical regions, the summer temperature is generally above 37°C. Research shows that the annual cost of climate problems caused by heat will reach $2.4 trillion by 2030. Therefore, in order to reduce energy consumption, reduce greenhouse gas emissions and other issues, outdoor daytime cooling is still crucial in many ways. However, due to its openness and the large amount of external heat brought by the high solar radiation intensity, daytime cooling is still a huge challenge. [0003] Daytime passive radiative cooling materials can transfer heat from the atmospheric window to outer space in the form of radiation by using its high refl...

Claims

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Application Information

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IPC IPC(8): D06N7/00D06N3/04D06N3/12D06N3/00D06M11/71D06M101/06
CPCD06N7/0094D06N3/047D06N3/128D06N3/042D06N3/0015D06N3/0036D06M11/71D06M2101/06D06N2201/042D06N2209/142D06N2209/146Y02P20/10
Inventor 易玲敏钟申洁左甜徐浪蔡英
Owner ZHEJIANG SCI-TECH UNIV
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