Preparation and Properties of Near-infrared Reflective Superhydrophobic Yellow Coating

被引：0
作者：
Cheng H. [1 ]
Liu H. [1 ]
Jiang T. [1 ]
Wang F. [1 ]
Li W. [1 ]
机构：
[1] School of Materials Engineering, Jiangsu University of Technology, Changzhou
来源：
Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2022年 / 36卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Near infrared reflection; polydimethylsiloxane; robust superhydrophobicity; self-cleaning; super hydrophobic coating; surface and interface of materials;
D O I：
10.11901/1005.3093.2021.466
中图分类号：
学科分类号：
摘要：
The superhydrophobic yellow coating was prepared by mixing titanium chromium brown powder (TCB), rutile titanium dioxide (TiO2), hydrophobic nano silica (SiO2) with polydimethylsiloxane (PDMS) solution and brush coating by one step. The surface wettability, hydrophobic stability, ultraviolet light aging resistance, self-cleaning performance and near-infrared reflection performance of the coating were systematically investigated. The results show that the water contact angle (CA) and roll angle (SA) of the coating are 155.2° and 5.4°, respectively; the coating retains excellent hydrophobicity after sandpaper wear at a distance of 2 m by 1.0 kPa and water impact at a distance of 5 L, meanwhile its adhesion and hardness reach grade 2 and 6B, respectively; the coating surface presents superhydrophobic effect and have chemical stability in solutions of different pH; The coating surface still retains strong hydrophobicity after ultraviolet light irradiation for 240 h, indicating that it has UV aging resistance; the coating surface has excellent self-cleaning performance, and the pollutants are easily carried away by water droplets; the near-infrared reflectance and solar reflectance of the coating are 0.858 and 0.672, respectively. The coating has obvious cooling effect on the ordinary cement board, and still maintains a high reflectance after outdoor exposure and water impact. © 2022 Chinese Journal of Materials Research. All rights reserved.
引用
收藏
页码：687 / 698
页数：11
相关论文
共 42 条
[1]  
Akbari H, Matthews H D., Global cooling updates: Reflective roofs and pavements, Energ. Buildings, 55, (2012)
[2]  
Garshasbi S, Haddad S, Paolini R, Et al., Urban mitigation and building adaptation to minimize the future cooling energy needs, Sol. Energy, 204, (2020)
[3]  
Chen J, Lu L, Gong Q, Et al., Techno-economic and environmental performance assessment of radiative sky cooling-based super-cool roof applications in China, Energ. Convers. Manage, 245, (2021)
[4]  
Jazaeri J, Gordon R L, Alpcan T., Influence of building envelopes, climates, and occupancy patterns on residential HVAC demand [J], J. Build. Eng, 22, (2018)
[5]  
Levinson R, Berdahl P, Akbari H., Solar spectral optical properties of pigments-Part I: model for deriving scattering and absorption coefficients from transmittance and reflectance measurements, Sol. Energ. Mat. Sol. C, 89, 4, (2005)
[6]  
Xue X, Qin J, Song J, Et al., The methods for creating energy efficient cool gray building coatings-Part I: Preparation from white and black pigments, Sol. Energ. Mat. Sol. C, 130, (2014)
[7]  
Jiang L, Xue X, Qu J, Et al., The methods for creating energy efficient cool gray building coatings-Part II: Preparation from pigments of complementary colors and titanium dioxide rutile [J], Sol. Energ. Mat. Sol. C, 130, (2014)
[8]  
Song Z, Zhang W, Shi Y, Et al., Optical properties across the solar spectrum and indoor thermal performance of cool white coatings for building energy efficiency, Energ. Buildings, 63, (2013)
[9]  
Zhang W, Song Z, Shi Y, Et al., The effects of manufacturing processes and artificial accelerated weathering on the solar reflectance and cooling effect of cool roof coatings [J], Sol. Energ. Mat. Sol. C, 118, (2013)
[10]  
Berdahl P, Akbari H, Levinson R, Et al., Weathering of roofing materials-an overview [J], Constr. Build. Mater, 22, 4, (2008)
12345