Adhesive Properties of Polyurethane Paint Coatings Modified with Multi Walled Carbon Nanotubes for Hardwood Protection

The article presents the results of the adhesive properties of polyurethane paint coatings modified with Multi Walled Carbon Nanotubes for hardwood protection. The study shows how the addition of MWCN in proportions 0, 1, 2 and 4% affect the mechanical properties of the coating on oak wood substrates. Pull-off strength test, Shore D hardness test and cross-cut test were performed in this study. For the pull-off strength test, the highest average (5.76 MPa) was obtained for the addition of 1% of MWCN, while for the Shore D hardness test, it was obtained for the addition of 4% of MWCN (72.5). The addition of MWCN resulted in a slight improvement in hardness and increased the pull off strength of the coating.