What Makes Super hydrophobic Nano Coating a Game-Changer for Fiberglass? Fiberglass, valued for its lightweight and high strength, plays a crucial role in industries like construction, aerospace, and automotive. However, one challenge remains: its hydrophilic nature. Fiberglass easily absorbs moisture in humid conditions, which compromises its mechanical properties, shortens its lifespan, and limits its usability. Can a hydrophobic nano coating solve these problems and unlock new potential for fiberglass?


Innovative Technology Behind the Nano Hydrophobic Coating
Engineers have developed a revolutionary superhydrophobic nano coating using emulsion polymerization. This innovation addresses the key challenges associated with fiberglass.
- Creating a Crosslinked Structure – A robust polymeric network is constructed using methyl methacrylate (MMA), vinyltriethoxysilane (VTES), and diethylene glycol diacrylate (DEGDA) as a crosslinking agent. This low-surface-energy structure provides the foundation for exceptional water-repelling properties.
- Incorporating Nano-Silica for Durability – Nano-sized silica (SiO2) particles, chemically modified with silane coupling agents, are integrated into the polymer matrix. These particles enhance surface roughness, improving mechanical strength and chemical resistance.
- Achieving Unparalleled Hydrophobicity – When the VTES content is optimized to 30%, and nano-SiO2 is adjusted to 5%, the coating achieves a remarkable water contact angle. Specifically, the angle measures 154.6° ± 0.8°, which clearly highlights its excellent water-repellent properties.
Unmatched Performance in Extreme Conditions
1 Exceptional Durability
The coating has been subjected to rigorous testing:
- Maintains hydrophobicity after 10 days of immersion in acidic and alkaline environments.
- Withstands 48 hours of UV exposure and 60 abrasion cycles while keeping the water contact angle above 150°.
2 Self-Healing Properties
After O2 plasma treatment, the coating temporarily loses its hydrophobicity. However, brief heating restores its superhydrophobic state due to the migration of silicone components to the surface, ensuring continuous protection.
3 Resilience Under Wear and Tear
The coating, constructed from crosslinked spherical latex particles, offers strong resistance to both physical damage and chemical degradation. Moreover, even if the surface layers sustain damage, the underlying structure continues to maintain its water-repellent properties.

Hydrophobic Nano Coating Versatile Applications Beyond Fiberglass
This superhydrophobic nano coating is not limited to fiberglass. Its adaptability makes it suitable for other substrates, including glass, foamed copper, filter paper, and sponges. Potential applications range from construction and filtration systems to protective layers in electronics and energy devices.

About SIOResin (SIO New Material)
SIOResin is a leading company in China specializing in the development and production of new materials. We manufacture and supply high-quality water-based silicone resins, silicone-modified polyesters, water-based polyurethanes, water-based acrylics, UV resins, liquid silicone rubber, intumescent fireproof coatings, flame retardants, wetting agents, curing agents, associative thickeners, driers, soft-touch agents, and other additives. Our products have a wide range of applications and with competitive prices.
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