Liquid-Infused Micro-Nanostructured MOF Coatings (LIMNSMCs) with High Anti-Icing Performance

Area of Science:

• Materials Science
• Surface Chemistry
• Nanotechnology

Background:

• Developing advanced anti-icing surfaces is crucial for various applications.
• Existing anti-icing materials often face challenges with durability and effectiveness at low temperatures.

Purpose of the Study:

• To design and prepare a novel liquid-infused micro-nanostructured metal-organic framework coating (LIMNSMC) for enhanced anti-icing performance.
• To investigate the factors influencing the anti-icing capabilities of LIMNSMC, including liquid viscosity, quantity, and surface morphology.

Main Methods:

• Fabrication of micro-nanostructured metal-organic framework (MOF) coatings.
• Immobilization of lubricating liquids within the MOF porous structures.
• Characterization of anti-icing performance through freezing temperature and ice adhesion strength measurements.
• Evaluation of material durability under various stress conditions (freezing/melting, icing/de-icing, centrifugation, abrasion).

Main Results:

• The developed LIMNSMC demonstrated exceptional anti-icing performance with a freezing temperature of approximately -39 °C and ice adhesion strength of approximately 10 kPa.
• Micro-nanostructures reduced contact area and heat transfer, while the lubricating layer minimized nucleation sites and ice adhesion.
• The material exhibited good durability, retaining high anti-icing performance after 10 freezing/melting and 6 icing/de-icing cycles.

Conclusions:

• LIMNSMC is a highly effective anti-icing material due to its unique structure and immobilized liquid.
• The material's performance and durability make it a promising candidate for applications requiring robust ice prevention.