超疏水材料在防/除冰技术中的应用研究进展

Research progress on application of superhydrophobic materials in anti-icing and de-icing technology

  • 摘要: 结冰结霜给人们的生活带来诸多不便,大量结冰积冰会影响飞机的飞行安全、推迟火箭发射任务、引起电力网络故障、造成交通运输障碍,甚至引发重大的经济问题和人身安全问题。传统的防/除冰技术耗能大、效率低、易对环境造成污染。超疏水技术利用材料的本征属性,延缓结冰,显著降低冰与基底表面的黏附力,是极具发展前景的防/除冰技术。本文首先对固体表面润湿现象及结冰机制进行了介绍,指出超疏水防/除冰材料面临着低温高湿环境下憎水性丧失,耐久性较差,面向工程的大面积制备方法制约等问题。随后,对低温高湿环境用超疏水防/除冰材料、耐久性、制备方法、多功能复合超疏水防/除冰材料等方面的研究进展进行了综述和分析。最后,对超疏水防/除冰材料在实际工程中的应用进行归纳和总结。在此基础上,展望了超疏水防/除冰材料的研究前景和发展趋势。

     

    Abstract: Icing and frosting bring many disadvantages to people's life. Ice accumulation will affect the flight safety of aircraft, delay the rocket launch mission, deform transmission lines and power networks, cause transportation obstacles, and even produce major economic problems and personal safety problems. Conventional anti-icing and de-icing methods are often costly, inefficient, or environmentally harmful. Superhydrophobic technology, which uses the intrinsic properties of materials to delay icing and significantly reduces the ice adhesion between ice and substrate, is a promising anti-icing and deicing technology. In this paper, firstly, the wetting phenomenon of solid surface and ice nucleation mechanism are introduced. It should be indicated that superhydrophobic surfaces face many problems such as the its wettability can be changed with decreasing the temperature and increasing the relative humidity, poor stability and mechanical robustness, and lack of facile and large-scale fabrication methods. Secondly, the research progress of superhydrophobic anti-icing and de-icing materials, stable and mechanically robust superhydrophobic surfaces, fabrication of superhydrophobic surfaces and multifunctional anti-icing and de-icing superhydrophobic materials are reviewed and analyzed. Finally, many applications of anti-icing and de-icing superhydrophobic materials in practical engineering are concluded and summarized. On this basis, the development trends and prospects of anti-icing and de-icing superhydrophobic materials are discussed.

     

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