自清洁型F-SiO2/ BaTiO3降温涂层织物的制备与性能

摘要/Abstract

摘要： 为了制备具有自清洁功能的降温织物，选用锦纶牛津布为基材，使用氟硅烷改性二氧化硅粒子，将聚二甲基硅氧烷(PDMS)、含氟烷基改性二氧化硅(F-SiO2)、钛酸钡(BaTiO3)通过刮涂的方式整理到锦纶织物上，获得复合降温涂层织物；对所得织物的微观结构和表面化学组成进行测试，探究不同涂覆量对复合涂层织物太阳光反射率和中红外发射率的影响，评估涂层织物的降温性能、易去污性能、机械性能。结果表明：复合涂层的引入能显著提高织物的光谱性能，与原始锦纶相比，制备的复合涂层织物的太阳光反射率提高至88%，大气窗口红外发射率可达92%。在户外太阳直射的情况下，制备的复合涂层织物相比原始锦纶织物最高可降温5.6 ℃，且具有很好的自清洁易去污效果和机械性能，在户外装备降温、电器设备降温、建筑路面降温等领域具有广泛的应用前景。

关键词: 辐射降温, SiO2, BaTiO3, 涂层, 锦纶, 自清洁

Abstract: Global warming and urban heat island effect have a significant influence on social progress and survival of human beings. Excessive heat in outdoor space can reduce the lifespan of outdoor products and pose a threat to people's safety. Therefore, during hot summer days, outdoor protective equipment with cooling functions has become increasingly popular. Passive daytime radiative cooling (PDRC) technology is an effective strategy for achieving outdoor cooling. It can cool the surface of the subject solely through the inherent properties of the material itself without consuming any energy. PDRC materials reflect sunlight with wavelengths ranging from 0.3 to 2.5 µm and radiate heat through the atmospheric window (8–13 µm) into outer space. Combining radiative cooling technology with textiles to prepare cooling textiles is meaningful.
However, it is difficult to achieve high cooling performance while maintaining good usability of textiles. Meanwhile, outdoor cooling textiles inevitably encounter rainfall and atmospheric sediments during use. These contaminants will accumulate on the surface of textiles, reducing their sunlight reflectance and infrared emissivity, which in turn affects the cooling performance. Therefore, it is necessary to develop PDRC textiles that have anti-contamination capabilities and can continuously achieve high-efficiency cooling effect. In this study, PDMS and fluorosilane-modified SiO2 particles were used to combine with visible-near infrared highly reflective BaTiO3 particles to prepare PDRC coating with self-cleaning property on nylon fabrics to obtain coating fabrics with cooling effect. The morphology and chemical structure of the coated nylon fabrics were analyzed. The influencing factors of the spectral characteristics of the coated nylon fabric were studied. The cooling performance, self-cleaning performance, and mechanical properties of fabrics were also investigated.
The results show that the coated fabric has a comparatively higher sunlight reflectance and mid-infrared emissivity, and both the sunlight reflectance and mid-infrared emissivity increase with the increase of coating amount. When the coating amount is 8.59 mg/cm2, the average sunlight reflectance of the coated fabric is 88%, and the average mid-infrared emissivity is 92%. Compared with the original nylon fabric, the coated fabric can reduce the temperature by up to 5.6 °C when the solar radiation intensity is 558 W/m2. Meanwhile, the composite coated fabric has a hydrophobic surface with a water contact angle of 146.6°, and it possesses excellent cooling performance, self-cleaning ability, abrasion resistance and outstanding mechanical strength, indicating broad application prospects in the outdoor scenario.

Key words: radiative cooling, SiO2, BaTiO3, coating, nylon, self-cleaning

中图分类号:

TS195.5

徐帅, 王菲, 袁浩, 张佳文, 易玲敏. 自清洁型F-SiO2/ BaTiO3降温涂层织物的制备与性能[J]. 现代纺织技术, 2024, 32(9): 1-9.

XU Shuai, WANAG Fei, YUAN Hao, ZHANG Jiawen, , YI Lingmin. Preparation and properties of self-cleaning F-SiO2/ BaTiO3 coated cooling fabric[J]. Advanced Textile Technology, 2024, 32(9): 1-9.

参考文献

[1] 韩梦瑶, 任松, 葛灿, 等. 用于个人热管理的被动调温服装材料研究进展[J]. 现代纺织技术, 2023, 31(1): 92-103.
HAN Mengyao, REN Song, GE Can, et al. Research progress of passive temperature-regulated clothing materials for personal thermal management[J]. Advanced Textile Technology, 2023, 31(1): 92-103.
[2] 程喜慧, 陈萌, 窦跃杰, 等. 辐射制冷功能纺织品的研究进展[J]. 毛纺科技, 2024, 52(3): 132-137.
Cheng xihui, chen meng, dou yuejie, et al. Research progress of textiles with radiative cooling performance[J]. Wool Textile Journal, 2024, 52(03): 132-137.
[3] RAMAN A P, ABOU ANOMA M, ZHU L, et al. Passive radiative cooling below ambient air temperature under direct sunlight[J]. Nature, 2014, 515(7528): 540-544.
[4] MA H, YAO K, DOU S, et al. Multilayered SiO2/Si3N4 photonic emitter to achieve high-performance all-day radiative cooling[J]. Solar Energy Materials and Solar Cells, 2020, 212: 110584.
[5] 高璐, 鲍艳, 张文博, 等. 聚合物基日间辐射冷却材料的设计及应用[J]. 高分子通报, 2023, 36(9): 1158-1173.
GAO Lu, BAO Yan, ZHANG Wenbo, et al. Design and applications of polymer-based daytime radiative cooling materials[J]. Polymer Bulletin, 2023, 36(9): 1158-1173.
[6] LIN K, CHEN S, ZENG Y, et al. Hierarchically structured passive radiative cooling ceramic with high solar reflectivity[J]. Science, 2023, 382(6671): 691-697.
[7] MANDAL J, FU Y, OVERVIG A C, et al. Hierarchically porous polymer coatings for highly efficient passive daytime radiative cooling[J]. Science, 2018, 362(6412): 315-319.
[8] XIANG B, ZHANG R, LUO Y, et al. 3D porous polymer film with designed pore architecture and auto-deposited SiO2 for highly efficient passive radiative cooling[J]. Nano Energy, 2021, 81: 105600.
[9] ZHAI Y, MA Y, DAVID S N, et al. Scalable-manufactured randomized glass-polymer hybrid metamaterial for daytime radiative cooling[J]. Science, 2017, 355(6329): 1062-1066.
[10] 王慧迪, 薛朝华, 马超群, 等. 乙烯醋酸乙烯酯/二氧化硅超疏水辐射降温薄膜的制备及性能[J]. 高分子材料科学与工程, 2023, 39(9): 121-134.
WANG Huidi, XUE Chaohua, MA Chaoqun, et al. Fabrication of superhydrophobic porous poly(ethylene-vinyl acetate)/SiO2 film for daytime radiative cooling[J]. Polymer Materials Science and Engineering, 2023, 39(9): 121-134.
[11] 侯艺, 张佳文, 蔡英, 等. 超疏水抗紫外日间被动辐射制冷多孔涂层织物的制备及性能[J]. 丝绸, 2023, 60(10): 30-37.
HOU Yi, ZHANG Jiawen, CAI Ying, et al. Preparation and properties of superhydrophobic anti-ultraviolet porous coated fabrics for passive daytime radiative cooling[J]. Journal of Silk, 2023, 60(10): 30-37.
[12] LI N, WEI L, YOU M, et al. Hierarchically structural TiO2-PVDF fiber film with particle-enhanced spectral performance for radiative sky cooling[J]. Solar Energy, 2023, 259: 41-48.
[13] 孙诗婉，李欣，周涵．辐射冷却涂料及其在能源环境领域的应用[J/OL]. 化工进展: 1-9[2024-05-16]. https://doi.org/10.16085/j.issn.1000-6613.2023-1403.
SUN Shiwan, Ll Xin, ZHOU Han. Review of radiative cooling paint and applications in the fields of energy and environment[J/OL]. Chemical Industry and Engineering Progress: 1-9[2024-05-16]. https://doi.org/10.16085/j.issn.1000-6613.2023-1403.
[14] ZHOU K, YAN X, OH S J, et al. Hierarchically patterned self-cleaning polymer composites for daytime radiative cooling[J]. Nano Letters, 2023, 23(9): 3669-3677.
[15] ZHONG S, YI L, ZHANG J, et al. Self-cleaning and spectrally selective coating on cotton fabric for passive daytime radiative cooling[J]. Chemical Engineering Journal, 2021, 407: 127104.
[16] JARAMILLO-FERNANDEZ J, WHITWORTH G L, PARIENTE J A, et al. A self-assembled 2D thermofunctional material for radiative cooling[J]. Small, 2019, 15(52): 1905290.
[17] 李慧慧, 王群, 贾伟科, 等. 多功能超疏水纺织品的制备及应用研究进展[J]. 现代纺织技术, 2022, 30(3): 39-46.
LI Huihui, WANG Qun, Jia Weike, et al. Recent advances in the fabrication and application of multi-functional super-hydrophobic textiles[J]. Advanced Textile Technology, 2022, 30(3): 39-46.
[18] 任方圆, 崔月芝, 刘利彬, 等. 透明超疏水材料的研究进展[J]. 化学通报, 2024, 87(2): 175-183.
REN Fangyuan, CUI Yuezhi, LIU Libin, et al. Research progress in transparent superhydrophobic materials[J]. Chemistry, 2024, 87(2): 175-183.
[19] XIANG B, ZHANG J. A new member of solar heat-reflective pigments: BaTiO3 and its effect on the cooling properties of ASA (acrylonitrile-styrene-acrylate copolymer)[J]. Solar Energy Materials and Solar Cells, 2018, 180: 67-75.
[20] CHEN M, PANG D, MANDAL J, et al. Designing mesoporous photonic structures for high-performance passive daytime radiative cooling[J]. Nano Letters, 2021, 21(3): 1412-1418.
[21] GRANQVIST C G, HJORTSBERG A. Radiative cooling to low temperatures: General considerations and application to selectively emitting SiO films[J]. Journal of Applied Physics, 1981, 52(6): 4205-4220.
[22] WANG X, LIU X, LI Z, et al. Scalable flexible hybrid membranes with photonic structures for daytime radiative cooling[J]. Advanced Functional Materials, 2020, 30(5): 1907562.
[23] Ding Z, Li H, Li X, et al. Designer SiO2 Metasurfaces for efficient passive radiative cooling[J]. Advanced Materials Interfaces, 2024, 11(3): 2300603.
[24] Zhou L, Rada J, Zhang H, et al. Sustainable and inexpensive polydimethylsiloxane sponges for daytime radiative cooling[J]. Advanced Science, 2021, 8(23): 2102502.