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- Title
Gradient and weather resistant hybrid super-hydrophobic coating based on fluorinated epoxy resin.
- Authors
Li, Jin‐Hua; Weng, Rui; Di, Xi‐Qiang; Yao, Zeng‐Wen
- Abstract
ABSTRACT A weather resistant super-hydrophobic coating that can offer good substrate adhesion and yet to be easily processed at large scale can be of practical use in emerging fields of self-cleaning and anti-icing paint, combing all these properties together remains challenging task. Here we describe a composite coating composed of a fluorinated epoxy resin emulsion with embedded in situ surface-modified dual-scale nano-silica, which displayed durable super-hydrophobicity and excellent adhesive strength. The as-prepared coating possesses water contact angle of 158.6 ± 1°, sliding angle around 3.8 ± 0.2° which remain stable even under acidic/alkaline, heat/cool, and accelerated aging treatment. The results demonstrate that surface roughness had a micron- and nanometer scale distribution with increased particle loading beyond 40 wt %. Through quantitative comparison of surface Attenuated Total Reflection (ATR) with bulk FT-IR transmission spectra, a gradient coating with surface enrichment of hydrophobic groups was determined. The air-side fluorinated polysiloxane-rich layer endows coating with weather-resistance and ultra-hydrophobicity while bottom epoxy resin layer enhances substrate adhesion. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40955.
- Subjects
EPOXY coatings; EPOXY resins; PLASTIC coating; ADHESION; CONTACT angle; SURFACE roughness
- Publication
Journal of Applied Polymer Science, 2014, Vol 131, Issue 20, pn/a
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.40955