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Study on Preparation and Properties of Radiative Cooling Cellulose Textiles |
Received:January 18, 2023 |
DOI:10.11980/j.issn.0254-508X.2023.05.015 |
Key Words:cellulose textile nano-SiO2 radiative cooling environmentally friendly |
Fund Project:国家重点研发计划(2019YFC1905903);国家自然科学基金(32271976,31971612)。 |
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Abstract:In this study, nano-silica (SiO2) particles were loaded on the surface of cotton cellulose textiles(CT) by a spraying method to prepare radiative cooling cellulose textiles(SiO2-CT). Nano-SiO2 could improve the surface roughness of CT and form a large number of light scattering centers, thus improving the ability of CT for broad-wide management of light. The results showed that the reflectance of prepared SiO2-CT reached 91% and 73% in the spectra of 0.5-1.1 μm and 1.1-2.5 μm, respectively, and its emissivity reached 0.97 in the mid-infrared spectra. Finally, SiO2-CT showed an excellent radiation cooling effect, which spontaneously enabled the sub-ambient temperature of ~4.5 ℃ at noon and ~6.5 ℃ at night, respectively. |
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