High-grip and hard-wearing graphene reinforced polyurethane coatings

Monica Alberto, Maria Iliut, Mohan Kumar Pitchan, Julia Behnsen, Aravind Vijayaraghavan

Research output: Contribution to journalArticlepeer-review

Abstract

Liquid polyurethane (PU) resins are used to form anti-slip surface coatings. In this work, we reinforce PU resin films with few-layer graphene (FLG) nanoparticles incorporated by high-shear mixing. This process gives excellent dispersion as evidenced by optical and X-ray tomography. The FLG does not appreciably change the tensile strength or Shore hardness of the PU, but we report modest increase of 10% in tear strength and Young’s modulus, accompanied by a similar decrease in elongation to failure. However, significant improvement of over 100% is observed in the abrasion resistance. At the same time, we report a 25% increase in the coefficient of static friction and 200% increase in the coefficient of dynamic friction. These results, taken together, suggests that graphene can significantly improve the grip and durability of PU anti-slip coatings, without significantly affecting the other mechanical properties of the coating.
Original languageEnglish
JournalComposites. Part B: Engineering
Publication statusPublished - 2021

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