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文章编号: 1672-6987(2026)01-0061-07 DOI: 10.16351/j.1672-6987.2026.01.009
李伏曦, 荆为龙, 刘茗娆, 吴大雄, 朱海涛*(青岛科技大学 材料科学与工程学院, 山东 青岛 266042)
摘要: 日间辐射制冷材料通过对太阳光高反射和大气窗口(8~13 μm)高发射实现无能耗制冷,是多学科研究的热点。以聚氨酯(PU)和SiO2为主原料,采用静电纺丝法制备了辐射制冷复合薄膜;研究了不同工艺、不同SiO2含量以及不同厚度制备的样品对太阳反射率和大气窗口发射率的影响;探讨了最佳样品的辐射制冷性能和应用。结果表明:采用静电纺丝法可制备蜘蛛网状结构薄膜,SiO2含量为15%(质量分数)时,其太阳光谱平均反射率为96.0%,大气窗口平均发射率为95.5%;在太阳辐照下(450 W · m-2),净辐射制冷功率为67.6 W · m-2,可达到低于环境温度5.3 ℃的效果。
关键词: 辐射制冷; 静电纺丝; 聚氨酯; 二氧化硅
中图分类号: TB 321 文献标志码: A
引用格式: 李伏曦, 荆为龙, 刘茗娆, 等. 聚氨酯/SiO2日间辐射制冷薄膜的制备及性能[J]. 青岛科技大学学报(自然科学版), 2026, 47(1): 61-67.
LI Fuxi, JING Weilong, LIU Mingrao, et al. Preparation and performance of polyurethane/SiO2 daytime radiative cooling film[J]. Journal of Qingdao University of Science and Technology(Natural Science Edition), 2026, 47(1): -.
Preparation and Performance of Polyurethane/SiO2 Daytime Radiative Cooling Film
LI Fuxi, JING Weilong, LIU Mingrao, WU Daxiong, ZHU Haitao(College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: As a hotspot of multidisciplinary research, daytime radiative cooling materials realize energy-free cooling by high solar reflection and atmospheric window (8—13 μm) emission. In this study, radiative cooling composite film was prepared by an electrospinning method with polyurethane and SiO2 as the main raw materials. The influence of different preparation processes, SiO2 content and thickness on the solar reflection and atmospheric window emission of the film was investigated. The radiative cooling performance and applications of the best sample were studied. The results indicate that film with cobweb-like structure can be prepared by electrospinning. The average solar reflectance and average atmospheric window emittance are 96% and 95.5% when the SiO2 mass content is 15%. Under solar irradiation (450 W · m-2), the net radiative cooling power is 67.6 W · m-2 and a sub-ambient temperature of 5.3 ℃ can be achieved. This study provides a practical strategy for the preparation of radiative cooling film.
Key words: radiative cooling; electrospinning; polyurethane; silica
收稿日期: 2025-01-30
基金项目: 山东省自然科学基金项目(ZR2021ME206).
作者简介: 李伏曦 (1997—),男,硕士研究生. * 通信联系人.