Preparation of Robust Superhydrophobic Surfaces Based on the Screen Printing Method.

Area of Science:

• Materials Science
• Surface Chemistry
• Nanotechnology

Background:

• Bioinspired superhydrophobic surfaces offer advantages in self-cleaning, anti-corrosion, anti-icing, energy harvesting, and antibacterial coatings.
• Fabricating robust superhydrophobic surfaces cost-effectively and scalably remains a significant challenge.

Purpose of the Study:

• To propose an uncommon and durable method for fabricating superhydrophobic coatings on glass slides.
• To investigate the structural and property enhancements offered by the proposed fabrication technique.

Main Methods:

• Screen printing of epoxy resin grid (ERG) on glass slides (GS) followed by high-temperature curing.
• Deposition of hydrophobic silica (H-SiO2) onto ERG@GS via impregnation to create H-SiO2@ERG@GS.
• Characterization of the micro-nano structure and superhydrophobic properties.

Main Results:

• The fabricated H-SiO2@ERG@GS surface exhibits a robust micro-nano structure formed by micro-columns, micro-grooves, and nano H-SiO2.
• The developed coating demonstrates excellent superhydrophobic properties, self-cleaning capabilities, mechanical durability, and chemical stability.
• The micro-grooves enhance specific surface area, while micro-columns protect the coating from mechanical wear.

Conclusions:

• The combination of micro-nano structure, low surface energy material, and air cushion effect results in a durable superhydrophobic surface.
• The proposed screen printing and impregnation method offers a practical and valuable approach for producing robust superhydrophobic coatings.
• The H-SiO2@ERG@GS material shows significant potential for practical applications requiring durable superhydrophobic surfaces.