Title: Producing Multifunctional Pa6/Organosheet Composites with Sustainable Plant Based Graphene Coatings

Authors: Daniel W. Mulqueen, Joseph Wright, Shu Xiao, Oleksandr G. Kravchenko

DOI: 10.33599/nasampe/s.24.0126

Abstract: The use of composite components in battery enclosures for electric vehicles requires the addition of electrically conductive elements to provide shielding from Electromagnetic Interference (EMI). Graphene, a highly conductive nanomaterial, can be useful for creating conductive paths on the surface and in interlaminar layers of the composite to provide shielding. In this study we examined impacts of plant-based graphene nanoplatelets (pGNP) surface coating on PA6/glass fiber organosheet with regards to EMI shielding, surface resistance, and flame retardancy. Suspensions of pGNP—derived from agricultural waste materials—were examined for their effectiveness in coating the PA6 surface. ɛ-Caprolactam and polyurethane (PU) were examined for their impacts on the sprayed surface and interactions with the substrate. pGNP surface application at 10 g/m² gave a 790 Ω/sq surface resistance, an improvement over untreated PA6 of seven orders of magnitude. ɛ-Caprolactam and PU addition improve adhesion on the PA6 surface, scratch resistance of the coating, and show evidence of in-situ polymerization with pGNP. This material is cost effective for automotive applications and allows for rapid manufacturing using thermoforming processes. We propose a conductive pGNP coating that can be applied after the forming operation, thus avoiding limitations of thermoforming of the conductive veils.

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Conference: SAMPE 2024

Publication Date: 2024/05/20

SKU: TP24-0000000126

Pages: 15

Price: $30.00