Stretchable superhydrophobic fluororubber fabricated by transferring mesh microstructures.

Area of Science:

• Materials Science
• Surface Chemistry
• Nanotechnology

Background:

• Stretchable superhydrophobic surfaces are crucial for waterproofing in aerospace and electronics.
• Existing surfaces face challenges in maintaining properties under high strain and with good durability.

Purpose of the Study:

• To develop a simple and efficient method for preparing a stretchable superhydrophobic surface.
• To investigate the durability and performance of the prepared surface under various stress conditions.

Main Methods:

• Fabrication of a stretchable superhydrophobic surface using fluororubber with hierarchical micro-convexities.
• Characterization of surface superhydrophobicity using water contact angle and sliding angle measurements.
• Evaluation of surface durability through stretching, abrasion, sand impact, and high-temperature tests.

Main Results:

• The prepared surface exhibited excellent superhydrophobicity (155.48 ± 1.97°) and a low water sliding angle.
• The surface maintained its superhydrophobic properties after extensive durability tests, including stretching up to high strain levels.
• Lossless transfer of water droplets was achieved even at large stretching strains.

Conclusions:

• A novel, highly durable, and stretchable superhydrophobic fluororubber surface was successfully prepared.
• The surface's unique hierarchical structure contributes to its robust superhydrophobicity and mechanical stability.
• The material shows significant potential for applications in microfluidic devices operating under extreme conditions.