Cathodic delamination of polyurethane/multiwalled carbon nanotube composite coatings from steel substrates
By Khun, N. W.; Frankel, G. S.
Published in Progress in Organic Coatings
NULL
2016
Abstract
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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