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<p>Inspired by natural super-repellent surfaces, superamphiphobic coatings have received great interest, but their applications are seriously hindered by low comprehensive stability. Here, we develop robust superamphiphobic coatings through a synergistic strategy combining microstructural engineering and click chemistry. Fluorinated SiO<sub>2</sub> nanoparticles with ultralow surface energy were synthesized via modifying SiO<sub>2</sub> nanoparticles with (3-mercaptopropyl)triethoxysilane followed by a UV-induced thiol-ene click reaction with 1H,1H,2H,2H-perfluorodecyl acrylate. A polyurethane adhesive and the resulting SiO<sub>2</sub>-SH-F nanoparticles were then sequentially sprayed onto substrates to construct the superamphiphobic coatings with hierarchical micro-/nanostructures. The polyurethane binder forms a resilient microscale skeleton that provides mechanical support, while the SiO<sub>2</sub>-SH-F nanoparticles ensure nanoscale roughness and low surface energy. The coatings exhibit excellent superamphiphobicity, repelling both water and low-surface-tension liquids like <i>n</i>-decane and even <i>n</i>-heptane. More importantly, the coatings demonstrate remarkable pressure resistance, mechanical, chemical, and environmental durability, maintaining superamphiphobicity under various conditions, e.g., 20 d immersion in 80 cm depth water, 100 Taber abrasion cycles, and 30 d outdoor exposure. The coatings also show outstanding anti-icing performance, e.g., significant freezing delay (∼245 s at −10°C and 60% RH), low ice adhesion strength (24.6 kPa), and long icing/deicing cycling life. This work provides a feasible pathway for designing robust superamphiphobic coatings.</p>

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Hierarchically structured protective frameworks reinforced by click-chemistry fluorinated nanoparticles for robust superamphiphobic coatings

  • 期刊论文

  • 发表日期：

    2026年6月23日

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  • Qingyun Wei,
  • Xiaoliang Zhang,
  • Lijuan Feng,
  • Bucheng Li,
  • Junping Zhang

摘要

Inspired by natural super-repellent surfaces, superamphiphobic coatings have received great interest, but their applications are seriously hindered by low comprehensive stability. Here, we develop robust superamphiphobic coatings through a synergistic strategy combining microstructural engineering and click chemistry. Fluorinated SiO2 nanoparticles with ultralow surface energy were synthesized via modifying SiO2 nanoparticles with (3-mercaptopropyl)triethoxysilane followed by a UV-induced thiol-ene click reaction with 1H,1H,2H,2H-perfluorodecyl acrylate. A polyurethane adhesive and the resulting SiO2-SH-F nanoparticles were then sequentially sprayed onto substrates to construct the superamphiphobic coatings with hierarchical micro-/nanostructures. The polyurethane binder forms a resilient microscale skeleton that provides mechanical support, while the SiO2-SH-F nanoparticles ensure nanoscale roughness and low surface energy. The coatings exhibit excellent superamphiphobicity, repelling both water and low-surface-tension liquids like n-decane and even n-heptane. More importantly, the coatings demonstrate remarkable pressure resistance, mechanical, chemical, and environmental durability, maintaining superamphiphobicity under various conditions, e.g., 20 d immersion in 80 cm depth water, 100 Taber abrasion cycles, and 30 d outdoor exposure. The coatings also show outstanding anti-icing performance, e.g., significant freezing delay (∼245 s at −10°C and 60% RH), low ice adhesion strength (24.6 kPa), and long icing/deicing cycling life. This work provides a feasible pathway for designing robust superamphiphobic coatings.