Textile with radiation refrigeration function and preparation method thereof

A radiative refrigeration and textile technology, applied in textiles and papermaking, fiber type, fiber processing, etc., can solve the problems of restricting the development and application of radiative refrigeration materials, affecting the performance of radiative refrigeration, reducing the reflectivity of sunlight, etc., and achieving a simple cooling effect. Control, excellent refrigeration performance, cheap and easy-to-obtain raw materials

Pending Publication Date: 2022-06-24
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research on passive radiation cooling materials mostly focuses on the design of complex photonic structure materials, such as photonic crystal materials, multi-layer structures, micro-nano porous structures, and metamaterials. These materials usually require relatively complex synthesis processes and harsh processing environments. ,higher cost
On the other hand, most radiation refrigeration materials basically choose silicon dioxide, polydimethylsiloxane, etc. as radiation materials, but they have a high visible light transmittance, which will reduce their solar reflectance to a certain extent. Affect its radiative refrigeration performance, so it is usually necessary to add Ag, Al, TiO 2 High reflective materials such as visible light; at the same time, a single silicon-based material also limits the development and application of radiation refrigeration materials

Method used

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  • Textile with radiation refrigeration function and preparation method thereof
  • Textile with radiation refrigeration function and preparation method thereof
  • Textile with radiation refrigeration function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Formulated with MgCO 3 and functional material slurries for polyacrylate (PA) coating adhesives, where MgCO 3 The mass ratio to PA is 1:1, the magnesium carbonate is a nano-sheet structure, purchased from Aladdin Reagent Company, the functional material slurry is coated on the PET fiber, the coating thickness is 0.12mm, and the PET-PA- MgCO 3 Material. Example 1 with PET-PA-MgCO 3 As an example to illustrate the radiation refrigeration performance of the present invention, PET-PA-MgCO 3 The morphological and structural characterization of the figure 1 shown, figure 1 SEM of a shows that under the action of PA coating glue, MgCO 3 Nanosheets successfully adhered to the surface of PET fibers, MgCO 3 The thickness of the nanosheet is about 35nm and the diameter is about 1μm, and its mass ratio in the coating is 46wt%; figure 1 The XRD pattern of b shows the diffraction peaks of magnesium carbonate, proving that MgCO 3 The structure and composition have not been ch...

Embodiment 2

[0060] Building PA-MgCO with FDTD Soultions 3 The three-dimensional cubic structure of the model, in which the size of the model is 10 μm × 10 μm × 2 μm, the size of the sheet-like magnesium carbonate is 1 μm × 1 μm × 35 nm, the content of magnesium carbonate is 50%, the spectral reflectance and infrared spectral emissivity spectra are calculated, and its PET -PA-MgCO 3 Comparison of the actual measured solar spectral reflectance spectrum and infrared spectral emission spectrum. from Figure 4 It can be seen that in the solar spectral region, the simulated result of reflectance is slightly lower than the actual measured value, because there is no PET fiber matrix in the FDTD model, and the simulated reflectance is low. In the "atmospheric window" region of 8-13 μm, the simulation results are basically consistent with the test results, and the infrared emissivity is higher than 95%, indicating that the radiation refrigeration system proposed by the present invention has excel...

Embodiment 3

[0062] Example 1 (PET-PA-MgCO) with a size of 6×6cm was cut 3 ) sample is placed in Figure 5 The radiative cooling performance under sub-ambient temperature conditions was tested in the thermometer shown. The temperature measuring device is mainly composed of a polystyrene foam box, and the outer layers are respectively wrapped with aluminum foil paper and low-density polyethylene film material to minimize the non-radiative heat exchange between the sample and the environment. Thermocouples were placed inside and outside the device to measure the changes of sample temperature and ambient temperature, and the intensity changes of solar light power were recorded with a luminometer. Finally, the temperature-time curve and solar light intensity curve of the sample under sub-ambient temperature test conditions were obtained as follows: Figure 7 (a) and (b). from Figure 7 It can be seen from the test that the ambient temperature range during the test is 25-30 °C, the surface t...

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Abstract

The invention relates to the field of functional textile materials, and discloses a textile with a radiation refrigeration function and a preparation method thereof. The textile comprises a fabric substrate, an organic coating adhesive attached to the surface of the fabric substrate and a radiation refrigeration functional material dispersed in the organic coating adhesive, the radiation refrigeration functional material at least comprises one or more of magnesium carbonate, magnesium hydroxide, magnesium boride, magnesium nitride and magnesium titanate. The radiation refrigeration material disclosed by the invention has excellent refrigeration performance, not only has relatively high emissivity in an atmospheric window wave band, but also has high reflectivity in a solar spectral region. Therefore, even in the daytime, temperature rise caused by the fact that a large amount of solar energy is absorbed is avoided.

Description

technical field [0001] The invention relates to the field of functional textiles, in particular to a textile with radiation cooling function and a preparation method thereof. Background technique [0002] With the rapid development of science and technology, human's demand and consumption of energy have risen sharply, and the global energy shortage, environmental pollution and ecological destruction caused by it have seriously threatened the survival of human beings. Therefore, promoting the development and utilization of renewable energy is the only way to achieve a low-carbon energy structure and protect the ecological environment. The sky radiative cooling technology based on the characteristics of low temperature cold source in outer space has aroused extensive interest of scholars due to its unique passive cooling and heat dissipation characteristics, and has been continuously developed and utilized, becoming one of the rookies of renewable energy technology. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/263D06M11/76D06M101/32
CPCD06M15/263D06M11/76D06M2101/32
Inventor 陈文兴杜雷雷李仁宏
Owner ZHEJIANG SCI-TECH UNIV
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