CIESC Journal ›› 2021, Vol. 72 ›› Issue (11): 5840-5848.DOI: 10.11949/0438-1157.20210698

• Material science and engineering, nanotechnology • Previous Articles     Next Articles

Preparation and anti-icing/deicing performance of photothermal superhydrophobic surfaces

Zhenting XIE1(),Hong WANG1,2(),Xun ZHU1,2,Rong CHEN1,2,Yudong DING1,2,Qiang LIAO1,2   

  1. 1.Institute of Engineering Thermophysics, Chongqing University, Chongqing 400044, China
    2.Key Laboratory of Low-Grade Energy Utilization Technologies & Systems, MOE, Chongqing University, Chongqing 400044, China
  • Received:2021-05-21 Revised:2021-08-01 Online:2021-11-12 Published:2021-11-05
  • Contact: Hong WANG

光热超疏水材料的制备与防、除冰性能研究

谢震廷1(),王宏1,2(),朱恂1,2,陈蓉1,2,丁玉栋1,2,廖强1,2   

  1. 1.重庆大学工程热物理研究所,重庆 400044
    2.重庆大学低品位能源利用技术及系统教育部重点实验室,重庆 400044
  • 通讯作者: 王宏
  • 作者简介:谢震廷(1995—),男,博士研究生,ztx95@foxmail.com
  • 基金资助:
    国家自然科学基金创新研究群体项目(52021004);国家自然科学基金面上项目(51676022);结冰与防除冰重点实验室开放课题资助(IADL20200406)

Abstract:

Icing on the surface of outdoor equipment brings a lot of inconvenience to human life and production. It is of great significance to study a new generation of anti-icing/deicing materials with anti-icing and deicing properties for the stability and durability of outdoor equipment. In this paper, the photothermal superhydrophobic material with a regular array structure was prepared by mixing dititanium trioxide (Ti2O3) powder with polydimethylsiloxane (PDMS) solvent by template method, and its anti-icing and photothermal deicing performance was studied. Due to the excellent photothermal response of Ti2O3 material, the surface average temperature of the prepared material can reach 60℃ under the light illumination condition of 100 mW/cm2, and the ice droplets on the surface can melt within 200 s. The results demonstrated that the materials have excellent photothermal conversion and photothermal deicing performance. Besides, PDMS material is inherently hydrophobic after curing, and the regular array micro-structure gives the material excellent superhydrophobic performance, with a contact angle of 153° and a rolling angle less than 5°. The icing delay time in the absence of light illumination is up to 1300 s, which is three times that of ordinary superhydrophobic materials. What's more, the droplets did not icing during the 6 h icing test due to its excellent photothermal properties, which indicates that the material has excellent photothermal anti-icing performance. The results of this study prove the possibility of using the abundant solar energy in nature to deicing and provide a new method for surface deicing technology of outdoor equipment.

Key words: solar energy, surface, preparation, superhydrophobic, photothermal deicing

摘要:

户外设备表面结冰给人类生活和生产带来了众多不便,研究具有防结冰性能和除冰性能的新一代防、除冰材料对于户外设备的持久稳定运行具有重要意义。本文利用模板法将三氧化二钛(Ti2O3)粉末和聚二甲基硅氧烷(PDMS)混合制备具有规则阵列结构的光热超疏水材料,并研究其防结冰性能与光热除冰性能。得益于Ti2O3优异的光热性能,制备的材料在100 mW/cm2光照条件下的光热温升可达55℃,冻结在表面的液滴可在200 s内融化,具有优异的光热转换与光热除冰性能。而PDMS材料固化后本征疏水,加规则阵列微结构后赋予材料优异的超疏水性能,其接触角高达153°,滚动角小于5°。无光照时的结冰延迟时间长达1300 s,是无光热材料表面结冰延迟时间的3倍。而在光照时由于其优异的光热性能,液滴在长达6 h的结冰测试中尚未结冰,表明材料具有优异的光热防结冰性能。研究结果论证了利用自然界丰富太阳能进行除冰的可能性,为户外设备表面除冰技术提供新的方式。

关键词: 太阳能, 表面, 制备, 超疏水, 光热除冰

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