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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）。
Author NameAffiliationPostcode
TANG Fengjie* College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
SUN Haodong College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
CHEN Yuwen College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
LI Jianguo College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108 350108
CHEN Lihui College of Materials Engineering， Fujian Agriculture and Forestry University， Fuzhou， Fujian Province， 350108
National Forestry & Grassl and Administration Key Lab for Plant Fiber Functional Materials， Fuzhou， Fujian Province， 350108 		350108
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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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