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Coated textile with passive radiation cooling function and preparation method of coated textile

A radiation cooling and textile technology, applied in the field of daytime radiation cooling materials, can solve the problems of complex preparation methods, poor cooling performance of the radiation cooling layer, and high cost, and achieve the effects of low price, saving preparation costs, and increasing reflectivity

Pending Publication Date: 2022-02-08
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems existing in the prior art, the present invention provides a flexible and high-efficiency radiation cooling functional coated textile and its preparation method, which overcomes the poor cooling performance of the radiation cooling layer and the complicated preparation method in the prior art. , high cost issues

Method used

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  • Coated textile with passive radiation cooling function and preparation method of coated textile
  • Coated textile with passive radiation cooling function and preparation method of coated textile
  • Coated textile with passive radiation cooling function and preparation method of coated textile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] (1) Place 5-micron silica between two PDMS plates with different viscoelasticity for one-way friction, and form a densely arranged single-layer silica array on the PDMS plate with large viscoelasticity, and then treat it at 200 ° C for 4 Hours to get a 5 micron silica stencil;

[0062] (2) Polymer P (VDF-HFP) is dissolved and dispersed in the acetone solution, and adding particle diameter is nano silicon dioxide of 200nm (wherein, the mass ratio of P (VDF-HFP), acetone, nano silicon dioxide is 1 :7:2), stir evenly, obtain daytime passive radiation coating dispersion liquid;

[0063] (3) Pouring the daytime passive radiation coating dispersion onto a 5 micron silica stencil, and attaching the PET fabric to the dispersion, and removing the coated fabric after the acetone has completely volatilized;

[0064] (4) Soak the coated fabric in diluted hydrofluoric acid aqueous solution (10%) to etch away the silicon dioxide. After cleaning with distilled water and drying, the ...

Embodiment 2

[0069] (1) Put 5-micron silica between two PDMS plates with different viscoelasticity for one-way friction, form a densely arranged single-layer silica array on the PDMS plate with large viscoelasticity, and treat 4 of them at 200 °C hours, a 5-micron silica stencil is obtained;

[0070] (2) Polymer P (VDF-HFP) is dissolved and dispersed in the acetone solution, and adding particle diameter is nano silicon dioxide of 200nm (wherein, the mass ratio of P (VDF-HFP), acetone, nano silicon dioxide is 1 :10:2), stir evenly to obtain daytime passive radiation coating dispersion;

[0071] (3) Pouring the daytime passive radiation coating dispersion onto a 5 micron silica stencil, and attaching the PET fabric to the dispersion, and removing the coated fabric after the acetone has completely volatilized;

[0072] (4) Soak the coated fabric in diluted hydrofluoric acid aqueous solution (10%) to etch away the silicon dioxide. After cleaning with distilled water and drying, the coated te...

Embodiment 3

[0075] (1) Put 5-micron silica between two PDMS plates with different viscoelasticity for one-way friction, form a densely arranged single-layer silica array on the PDMS plate with large viscoelasticity, and treat 4 of them at 200 °C hours, a 5-micron silica stencil is obtained;

[0076] (2) Polymer P (VDF-HFP) is dissolved and dispersed in the acetone solution, and adding particle diameter is nano silicon dioxide of 200nm (wherein, the mass ratio of P (VDF-HFP), acetone, nano silicon dioxide is 1 :8:1), stir evenly to obtain daytime passive radiation coating dispersion;

[0077] (3) Pouring the daytime passive radiation coating dispersion onto a 5 micron silica stencil, and attaching the PET fabric to the dispersion, and removing the coated fabric after the acetone has completely volatilized;

[0078] (4) Soak the coated fabric in diluted hydrofluoric acid aqueous solution (10%) to etch away the silicon dioxide. After cleaning with distilled water and drying, the coated tex...

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Abstract

The invention provides a coated textile with a passive radiation cooling function and a preparation method of the coated textile. The coated textile comprises a substrate and a radiation refrigeration layer which is arranged on the substrate and has a hierarchical porous structure. The pore scattering effect is fully utilized, the reflectivity to sunlight is effectively increased, and then the radiation refrigeration effect is improved. In the preparation process, raw materials are low in price, no inorganic ions or metal materials are needed, and the production cost is greatly reduced. The radiation refrigeration layer has very high influence on UV-Vis-NIR reflection and IR emission of the radiation refrigeration layer. The coated textile has ultra-high ultraviolet resistance and hydrophobicity, and can ensure the durability of cooling performance. Therefore, it is proved that radiation cooling is applied to textiles, and more possibilities are provided for preparation of low-cost and multifunctional textiles.

Description

technical field [0001] The invention belongs to the technical field of daytime radiation refrigeration materials, and in particular relates to a coated textile with passive radiation cooling function and a preparation method thereof. Background technique [0002] In 2019, electricity consumption by air conditioners and electric fans will account for about one-fifth of the total global electricity consumption in buildings, while space cooling will result in about 1GtCO 2 emissions, causing serious resource and environmental problems. Committed to finding a refrigeration method that can reduce energy consumption, replace air conditioners, help save energy, and alleviate environmental problems. As a new type of passive cooling technology without energy consumption, radiative cooling has attracted more and more attention from researchers. [0003] On a clear day, solar radiation is mainly composed of three types of radiation: 6% ultraviolet radiation, 52% visible light radiati...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/04D06N3/12D06N3/00
CPCD06N3/047D06N3/128D06N3/042D06N3/0043D06N3/0095D06N2203/044D06N2203/066D06N2203/04D06N2209/0876D06N2209/1678D06N2209/142
Inventor 苏娟娟崔超凡韩建
Owner ZHEJIANG SCI-TECH UNIV