Novel hydrophobic hybrid film coatings

A new study describes the preparation of hydrophobic hybrid film coatings from siloxane-modified polyacrylate associated with nano-fumed silica and organo-modified clay.

Beading drop of water.
Superhydrophobic surfaces are widely or potentially applied in various fields Image source: doctor-a - Pixabay (symbol image).

Superhydrophobic hybrid film coatings were prepared from the dispersions of siloxane-modified polyacrylate associated with organo-modified clay (OMC-20A) and hydrophobic-fumed silica (FS-H15) coated on glass and cement boards by a dipping process. The hydrophobicity, surface morphology, surface energy, and surface roughness of the obtained hybrid film coatings (HBFCs) were investigated. The results showed that the hydrophobicity of the obtained HBFCs was related to surface roughness and the roughness profile of the surface.

Great water repellent and self-cleaning abilities

HBFCs obtained using 10 phr OMC-20A with 35 phr FS-H15 in hybrid coatings and fabricated by four dipping provided high roughness surfaces (Rq) at 546.67 nm with a micro-nano-binary structure and a low surface energy at 2.35 mN/m leading to superhydrophobic surfaces on the coated glass and cement boards demonstrating 151.34° and 150.88° water contact angles, respectively. As a result, these HBFCs coated on cement board showed great water repellent and self-cleaning abilities.

The study has been published in Journal of Coatings Technology and Research, Volume 19, September 2022.

Hersteller zu diesem Thema

This could also be interesting for you!