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Fabrication and Properties of Thermochromic Superhydrophobic Coatings
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2021-09-13 , DOI: 10.1002/adem.202100647 Hongjie Cheng 1 , Fajun Wang 1 , Huangjuan Liu 1 , Junfei Ou 1 , Wen Li 1 , Rongjie Xue 1
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2021-09-13 , DOI: 10.1002/adem.202100647 Hongjie Cheng 1 , Fajun Wang 1 , Huangjuan Liu 1 , Junfei Ou 1 , Wen Li 1 , Rongjie Xue 1
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Herein, thermochromic superhydrophobic coatings (TSCs) with different colors are prepared, and their surface wettabilities and optical properties are studied. The TSC coating maintains its surface superhydrophobicity even after a series of mechanical damage (sandpaper abrasion, gravel impact, and knife scratching), chemical corrosion, ultraviolet aging, and environmental temperature changes. Contaminants on the surface of the coating sre easily washed by water droplets. The TSC has a reversible color function with a critical discoloration temperature (Tc) approximately in the range 28–31 °C. In winter, the ambient temperature (Ta) is lower than Tc, and the TSC is dark and absorbs more solar energy. Although in summer, Ta > Ta, the TSC is light and reflects more solar energy. The sunlight exposure test shows that the surface temperature of the thermochromic pigment/polydimethylsiloxane (TP/PDMS) coating in winter is only 0.9 °C lower than that of the carbon black/PDMS (CB/PDMS) coating, whereas in summer, the surface temperature of the TP/PDMS coating is only 6.2 °C higher than that of TiO2/PDMS coating. Energy consumption simulation results show that the TP/PDMS coating decreases the total annual energy consumption in North China by 13.74% compared with the traditional white cooling coating.
中文翻译：
热致变色超疏水涂层的制备及性能
在此，制备了不同颜色的热致变色超疏水涂层（TSCs），并研究了它们的表面润湿性和光学性能。TSC 涂层即使在经历了一系列机械损伤（砂纸磨损、砾石冲击和刀划痕）、化学腐蚀、紫外线老化和环境温度变化后，仍能保持其表面超疏水性。涂层表面的污染物很容易被水滴冲洗掉。TSC 具有可逆颜色功能，临界变色温度 ( Tc ) 大约在 28–31 °C 范围内。冬季环境温度（Ta ）低于Tc ，TSC较暗，吸收较多的太阳能。虽然在夏天，T a > T a，TSC 很轻，反射更多的太阳能。日光曝晒测试表明，热致变色颜料/聚二甲基硅氧烷（TP/PDMS）涂层在冬季的表面温度仅比炭黑/PDMS（CB/PDMS）涂层低0.9℃，而在夏季，表面温度TP/PDMS涂层的温度仅比TiO 2 /PDMS涂层高6.2°C。能耗模拟结果表明，TP/PDMS涂层与传统白色降温涂层相比，使华北地区年总能耗降低13.74%。
更新日期：2021-09-13
中文翻译：
热致变色超疏水涂层的制备及性能
在此，制备了不同颜色的热致变色超疏水涂层（TSCs），并研究了它们的表面润湿性和光学性能。TSC 涂层即使在经历了一系列机械损伤（砂纸磨损、砾石冲击和刀划痕）、化学腐蚀、紫外线老化和环境温度变化后，仍能保持其表面超疏水性。涂层表面的污染物很容易被水滴冲洗掉。TSC 具有可逆颜色功能，临界变色温度 ( Tc ) 大约在 28–31 °C 范围内。冬季环境温度（Ta ）低于Tc ，TSC较暗，吸收较多的太阳能。虽然在夏天，T a > T a，TSC 很轻，反射更多的太阳能。日光曝晒测试表明，热致变色颜料/聚二甲基硅氧烷（TP/PDMS）涂层在冬季的表面温度仅比炭黑/PDMS（CB/PDMS）涂层低0.9℃，而在夏季，表面温度TP/PDMS涂层的温度仅比TiO 2 /PDMS涂层高6.2°C。能耗模拟结果表明，TP/PDMS涂层与传统白色降温涂层相比，使华北地区年总能耗降低13.74%。
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