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Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications
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Innovative Solid Slippery Coating: Uniting Mechanical Durability, Optical Transparency, Anti-Icing, and Anti-Graffiti

Jiayi Shen1, Junfei Ou1, Sheng Lei1

  • 1School of Materials Engineering, Jiangsu University of Technology, Changzhou 213001, China.

Polymers
|October 14, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces a durable slippery coating made from polyurethane acrylate (PUA), methyltriethoxysilane (MTES), and perfluoropolyether (PFPE). The robust coating offers excellent anti-icing and anti-graffiti properties, maintaining performance after various stress tests.

Keywords:
anti-freezinganti-graffitianti-smudgedurabilitysolid slippery coating

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Area of Science:

  • Materials Science
  • Surface Chemistry
  • Nanotechnology

Background:

  • Slippery liquid-infused porous surfaces (SLIPS) show promise for anti-icing and anti-fouling applications.
  • Existing SLIPS coatings often lack durability against mechanical impact.

Purpose of the Study:

  • To develop a robust and durable slippery coating with enhanced anti-icing, anti-graffiti, and anti-sticking properties.
  • To investigate the mechanical, chemical, and environmental resistance of the novel coating.

Main Methods:

  • A novel slippery coating was formulated by blending polyurethane acrylate (PUA) with methyltriethoxysilane (MTES) and perfluoropolyether (PFPE).
  • The mixture was applied to substrates via drop coating and cured at 160 °C for 3 hours.
  • Coating properties including water repellency, transparency, adhesion, hardness, flexibility, and resistance to abrasion, water jetting, heat, and UV irradiation were evaluated.

Main Results:

  • The cured coating demonstrated excellent water repellency (contact angle ~108°, sliding angle ~8°), high transparency (~90%), exceptional adhesion (5B), and hardness (4H).
  • The coating maintained its wettability and a sliding angle below 25° after exposure to harsh conditions, including abrasion and UV irradiation.
  • Significantly reduced ice adhesion (from ~217 kPa to 12 kPa) and resistance to 400 graffiti cycles were observed.

Conclusions:

  • The developed PUA-based slippery coating offers a robust and versatile solution for anti-icing, anti-graffiti, and anti-sticking applications.
  • Its durability and performance under various stress conditions make it suitable for demanding real-world applications.