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http://dx.doi.org/10.7234/composres.2022.35.2.080

Hydrophobicity and Adhesion Evaluation of MWCNT/Teflon-polyurethane Topcoat for Aircraft with Different MWCNT Coating Times  

Lee, Jae-Hyuk (Department of Materials Science and Engineering, Gyeongsang National University)
Kim, Jong-Hyun (Department of Materials Engineering and Convergence Technology, Research Institute for Green Energy Convergence Technology, Gyeongsang National University)
Park, Joung-Man (Department of Materials Engineering and Convergence Technology, Research Institute for Green Energy Convergence Technology, Gyeongsang National University)
Publication Information
Composites Research / v.35, no.2, 2022 , pp. 80-85 More about this Journal
Abstract
This work presents an experiment study to evaluate the nanoparticle adhesion and surface hydrophobicity characteristics of Teflon-polyurethane top coat depending on the number of multi-wall carbon nanotube (MWCNT) coatings, which is a carbon-based hydrophobic particle. In order to measure the adhesion between the nanoparticles and the top coat, adhesion pull-off test was performed with different MWCNT oxidation times. Static contact angle and roughness measurements were carried out to characterize the surface hydrophobic behavior. Through the roughness evaluation, it was confirmed that the carbon nanotubes were wetted in the Teflon-polyurethane top coat, and the degree carbon nanotube wetting was confirmed through a USB-microscope. As a result, it was found that the larger the degree of wetting, the better the adhesion. From the experimental results, as the hydrophobicity of Teflon-polyurethane increased, the adhesive propertydecreased with the number of coatings. It was possible to improve the adhesive force and determine the number of coatings of carbon nanotubes with optimized hydrophobicity.
Keywords
Static contact angle; Surface resistance; Adhesive properties; MWCNT; Surface roughness;
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Times Cited By KSCI : 1  (Citation Analysis)
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