One-step sprayable durable superhydrophobic coatings based on discrete epoxy binders: fabrication and performance

Xuejuan Liu ^1,2,3, Xin Liu ⁴, Xinru Zhang ¹

⁰College of Life Science, Langfang Normal University Langfang 065000 Hebei China.

Rsc Advances +

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November 27, 2025

View abstract on PubMed

Summary

This study introduces a novel epoxy resin adhesive system to enhance the durability of one-step sprayed superhydrophobic coatings. The improved coatings maintain superhydrophobicity after harsh tests, enabling practical applications.

Area Of Science

Materials Science
Surface Chemistry
Nanotechnology

Background

Superhydrophobic coatings offer broad applications in architecture, transport, energy, and marine engineering.
One-step spraying is a simple, scalable method for fabricating these coatings.
Current one-step sprayed coatings lack mechanical robustness and environmental durability, limiting their use.

Purpose Of The Study

To develop durable superhydrophobic coatings using a one-step spraying method.
To address the limitations of mechanical robustness and environmental durability in existing coatings.
To propose an innovative discrete epoxy resin adhesive system for enhanced coating performance.

Main Methods

Fabrication of superhydrophobic coatings via a one-step spraying technique.
Incorporation of a discrete epoxy resin adhesive system into the coating formulation.
Evaluation of coating performance through rigorous testing, including abrasion, tape peeling, chemical corrosion, and UV aging.

Main Results

The developed coatings exhibited excellent superhydrophobicity (contact angle >150°, rolling angle <10°).
Coatings maintained superhydrophobicity after sandpaper abrasion, tape peeling, chemical corrosion, and UV aging.
Significant enhancement in mechanical robustness and environmental durability was achieved.

Conclusions

The discrete epoxy resin adhesive system effectively improves the durability of one-step sprayed superhydrophobic coatings.
This approach offers a viable solution for creating high-performance, durable superhydrophobic coatings with a simple preparation process.
The findings support the large-scale practical application of advanced superhydrophobic coating technology.