Cathodic delamination of polyurethane/multiwalled carbon nanotube composite coatings from steel substrates
By N.W. Khun and G.S. Frankel
Published in Progress in Organic Coatings
NULL
2016
Abstract
Polyurethane composite coatings with different multiwalled carbon nanotube (MWCNT) contents were prepared on steel substrates to study the effect of \MWCNT\ content on the cathodic delamination of the polyurethane composite coatings. The cathodic delamination of the polyurethane composite coatings was measured using a Scanning Kelvin Probe (SKP). An increase in \MWCNT\ content to 0.5 wt% significantly reduced the cathodic delamination of the polyurethane composite coatings because the high density of \MWCNTs\ blocked the transport pathways of water and oxygen molecules through the coating. It could be concluded that the incorporation of \MWCNTs\ was a possible way to lessen the cathodic delamination of the polyurethane coatings.
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