棉纺织技术2024，Vol.52Issue(12)：15-20,6.
微纳压印结构色纤维素膜的制备及其辐射制冷性能
Preparation and radiation cooling performance of cellulose film with micro-nano imprinting structural color
摘要
Abstract
Preparation and radiation cooling performance of cellulose film with micro nano imprinting structural colors were studied.Alkaline urea system was used to dissolve cellulose,a physically and chemically cross-linked cellulose film was prepared.By utilizing the water absorption and swelling property of the film,the micro-nano structure of orthogonal gratings was micro-nano imprinted on the cellulose film,making the originally monotonous white passive daytime radiation cooling material into a structural color new material and enhancing its radiation cooling effect.The results showed that the film after imprinting had a better reflectivity in the visible light band,with an average absorption rate of only 19％,and emissivity was reached up to 93％in the atmospheric window band.Under the irradiation of a 360 W xenon lamp,the surface temperature of the film was below 3.4℃higher than that of the cotton fabric,which was reduced by an average of 6℃compared to the ambient temperature in the irradiation range.Under an average solar irradiance of 661.6 W/m2,the temperature on the back of the cellulose film with micro nano imprinted structure was decreased by an average of 7.1℃compared to the ambient temperature.Under solar radiation illumination of 500 W/m2,the maximum radiative cooling power was 63.3 W/m2.The cellulose films with micro-nano imprinting structural color was a green radiation cooling material.It could be widely used as radiation cooling material or architectural cover material.关键词
纤维素/微纳压印/辐射制冷/绿色节能/结构色Key words
cellulose/micro-nano imprinting/radiant refrigeration/green and energy-saving/structural color分类
轻工纺织引用本文复制引用
卢铭曦,李镔,黄美林,易宁波,巫莹柱..微纳压印结构色纤维素膜的制备及其辐射制冷性能[J].棉纺织技术,2024,52(12):15-20,6.基金项目
江门市科技计划项目(2021030103890006796) （2021030103890006796）
揭阳市揭榜挂帅项目(2022DZX027,skjcx033) （2022DZX027,skjcx033）
创新创业及攀登计划项目(pdjh2021b0514,2022CX43,2022CX44,2022CY61,pdjh2023 b0533,2023111400000397,202311349043S) （pdjh2021b0514,2022CX43,2022CX44,2022CY61,pdjh2023 b0533,2023111400000397,202311349043S）
