Journal
THIN SOLID FILMS
Volume 520, Issue 17, Pages 5644-5651Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2012.04.067
Keywords
Fluorinated acrylate copolymers; Hydrophobic; Fumed silica; Silica sol; Icephobic
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Funding
- National Science and Technology Support Program of China [2009BAA23B04]
- Fourth Installment of Science and Technology Development 2010 Program of Suzhou [SYG201005]
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Inexpensive hydrophobic and icephobic coatings and films were obtained by a simple method. These coatings were prepared by mixing silica sol and fluorinated acrylate copolymers. There was a phase separation process in the film-forming which can provide the excellent performance. Small amount (about 2 wt.%) of fluorinated (methyl) acrylate was used in all of these coatings. The coatings were eco-friendly by using ethanol as the solvent system. Scanning electron microscopy, atomic force microscope, energy dispersive X-ray fluorescence spectrometer, water contact angle, thermal gravimetric analysis and tests of adhesion and hardness had been performed to characterize the morphological feature, chemical composition, hydrophobicity and icephobicity of the surface, thermal stability and mechanical properties of the coatings. The results showed that the films had good hydrophobicity, high thermal stability and excellent mechanical properties of adhesion strength and pencil hardness. Furthermore, by testing their properties of delaying water droplet from icing, it was found that ice formation was delayed for 90 min compared with the glass surface at -5.6 degrees C. The hybrid coatings may be suitable for large-scale and practical application owing to its flexibility and simplicity. (C) 2012 Elsevier B.V. All rights reserved.
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