Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 337, Issue 2, Pages 531-537Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2009.05.061
Keywords
Superhydrophobic; Multi-scale structure; Epoxy paint; pH and solvent resistance; High speed scouring resistance
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Superhydrophobic surfaces with multi-scale nano/microstructures have been prepared on epoxy paint surfaces Using a feasible dip-coating process. The microstructures with 5-10 mu m protuberances were first prepared on epoxy paint surface by sandblast. Then the nanostructures were introduced on the microstructure surface by anchoring 50-100 nm SiO2 particles (nano-SiO2) onto the sandblasted paint surface, which was completed by dip-coating with a nano-SiO2/epoxy adhesive solution (M1). At last the surface was further modified for enhancing hydrophobicity by another dip-coating with a solution of a low surface energy polymer, aminopropyl terminated polydimethylsiloxane (ATPS) modified epoxy adhesive (M2). The water contact angle of the as-prepared samples reached as high as 167.8 degrees and the sliding angle was 7 degrees. The prepared Superhydrophobic surface exhibited excellent durability to the high speed scouring test and high stability in neutral and basic aqueous Solutions and some common organic solvents. In addition, this method can be adopted to fabricate large scale samples with a good homogeneity of the whole surface at very low cost. Crown Copyright (C) 2009 Published by Elsevier Inc. All rights reserved.
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