辐射制冷纤维素织物的制备及性能研究  

Study on Preparation and Properties of Radiative Cooling Cellulose Textiles

作　　者：汤锋洁 孙浩东 陈昱文 李建国 陈礼辉[1,2] TANG Fengjie;SUN Haodong;CHEN Yuwen;LI Jianguo;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)

机构地区：[1]福建农林大学材料工程学院,福建福州350108 [2]植物纤维功能材料国家林业和草原局重点实验室,福建福州350108

出　　处：《中国造纸》2023年第5期134-139,共6页China Pulp & Paper

基　　金：国家重点研发计划(2019YFC1905903);国家自然科学基金(32271976,31971612)。

摘　　要：采用喷涂方式在纤维素织物(CT)表面负载纳米二氧化硅(SiO_(2))颗粒,进而制备辐射制冷纤维素织物(SiO_(2)-CT)。纳米SiO_(2)可以提升CT的表面粗糙度,形成大量的光散射中心,进而提升CT的宽波段光管理能力。结果表明,SiO_(2)-CT在0.5~1.1μm和1.1~2.5μm波段的反射率分别达91%和73%。在中红外波段的发射率达0.97。SiO_(2)-CT展现出优异的辐射制冷效果,在中午时段可以自发降温~4.5℃,在夜间时段可以自发降温~6.5℃。In this study,nano-silica(SiO_(2))particles were loaded on the surface of cotton cellulose textiles(CT)by a spraying method to prepare radiative cooling cellulose textiles(SiO_(2)-CT).Nano-SiO_(2) 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 SiO_(2)-CT reached 91% and 73% in the spectra of 0.5-1.1μm and 1.1-2.5μm,respectively,and its emissivity reached 0.97 in the mid-infrared spectra.Finally,SiO_(2)-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.

关 键 词：纤维素织物 纳米二氧化硅 辐射制冷 环境友好 

分 类 号：TS72[轻工技术与工程—制浆造纸工程] TS106