Photothermal Superhydrophobic Coating Based on Hollow Carbon Nanospheres and Water‐Soluble Fluorine‐Free Polysiloxane for Durable Anti‐Icing/Deicing

Advanced Materials & Technologies Pub Date : 2025-12-19 DOI:10.1002/admt.202501476

Xudong Liu, Yong Wen, Shenzhen Li, Lu Zhou, Hao Wu, Junhao Xie, Jinqiu Tao, Qianping Ran

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Abstract

ABSTRACT Ice accretion induced by extreme weather conditions poses a serious threat to the safe operation of infrastructure. Although superhydrophobic coatings exhibit excellent passive anti‐icing performance, they generally lack active deicing capabilities. In this study, a novel photothermal superhydrophobic coating (PM‐CPPS) is developed by integrating hydrangea‐like hollow carbon nanospheres (CPPS) with a water‐soluble fluorine‐free polysiloxane (PMATE), enabling a synergistic effect of passive anti‐icing and active deicing. The hierarchical micro/nanostructure and low surface energy of the PM‐CPPS coating significantly enhanced its hydrophobicity (WCA > 157°), and the photothermal effect enabled complete melting of surface ice within 93 s. Experimental results showed that at −15°C, the coating extended the freezing time of water droplets by approximately 20‐fold. Additionally, interfacial adhesion is improved via an epoxy–amine ring‐opening reaction between epoxy groups and polydopamine (PDA), allowing the coating to maintain superhydrophobicity after 200 sandpaper abrasion cycles and 160 tape‐peeling tests. PM‐CPPS exhibited an ultra‐low initial ice adhesion strength (5.25 kPa) and a stable photothermal conversion efficiency of 83.24%. This study offers an efficient and durable coating design strategy for long‐term anti‐icing and deicing applications in infrastructure under extreme environmental conditions.

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基于空心碳纳米球和水溶性无氟聚硅氧烷的光热超疏水涂层的研究

极端天气条件引起的冰积对基础设施的安全运行构成严重威胁。虽然超疏水涂层具有优异的被动防冰性能，但它们通常缺乏主动除冰能力。在这项研究中，通过将绣球状空心碳纳米球（CPPS）与水溶性无氟聚硅氧烷（PMATE）结合，开发了一种新型光热超疏水涂层（PM‐CPPS），实现了被动防冰和主动除冰的协同效应。PM - CPPS涂层的分层微纳米结构和低表面能显著增强了其疏水性（WCA > 157°），光热效应使表面冰在93 s内完全融化。实验结果表明，在- 15°C时，涂层使水滴的冻结时间延长了约20倍。此外，通过环氧基和聚多巴胺（PDA）之间的环氧胺开环反应，界面附着力得到改善，使涂层在200次砂纸磨损和160次胶带剥离试验后仍能保持超疏水性。PM‐CPPS具有超低的初始冰附着强度（5.25 kPa）和稳定的光热转换效率（83.24%）。该研究为极端环境条件下基础设施的长期防冰和除冰应用提供了一种高效耐用的涂层设计策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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