Stable superhydrophobic composite coatings made from an aqueous dispersion of carbon nanotubes and a fluoropolymer

An easy method is reported for fabricating a stable superhydrophobic coating made from a composite comprising carbon nanotubes and a fluoroplastic such as polytetrafluoroethylene or perfluoroalkoxy resin (Teflon® PFA). The superhydrophobic coatings with hierarchical structure characteristics are fab...

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Veröffentlicht in:Carbon (New York) 2011-04, Vol.49 (5), p.1769-1774
Hauptverfasser: Wang, Kewei, Hu, Nan-Xing, Xu, Gu, Qi, Yu
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container_end_page 1774
container_issue 5
container_start_page 1769
container_title Carbon (New York)
container_volume 49
creator Wang, Kewei
Hu, Nan-Xing
Xu, Gu
Qi, Yu
description An easy method is reported for fabricating a stable superhydrophobic coating made from a composite comprising carbon nanotubes and a fluoroplastic such as polytetrafluoroethylene or perfluoroalkoxy resin (Teflon® PFA). The superhydrophobic coatings with hierarchical structure characteristics are fabricated by a spray coating technique using an environmentally friendly aqueous dispersion containing carbon nanotubes and perfluoroalkoxy resin. Coatings with a contact angle of 153.1 ± 2° and a sliding angle less than 5° are stable under much stress conditions, i.e., either soaking in concentrated hydrochloric acid and concentrated sulfuric acid, or attacking with extreme-pH or ionic-strength solutions. Both the contact angle and sliding angle can be tuned simply by changing the carbon nanotube loading. To further the understanding of the formation of superhydrophobicity, we investigated both the formation of the nano/microscale structures and their effects.
doi_str_mv 10.1016/j.carbon.2010.12.063
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source Elsevier ScienceDirect Journals Complete
subjects Carbon nanotubes
Chemistry
Coating
Contact angle
Cross-disciplinary physics: materials science
rheology
Dispersions
Exact sciences and technology
Fullerenes and related materials
diamonds, graphite
General and physical chemistry
Materials science
Nanostructure
Physics
Polymers
Resins
Solid-liquid interface
Specific materials
Stress concentration
Surface physical chemistry
title Stable superhydrophobic composite coatings made from an aqueous dispersion of carbon nanotubes and a fluoropolymer
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