Spray deposition of sustainable plant based graphene in thermosetting carbon fiber laminates for mechanical, thermal, and electrical properties

Graphene has generated substantial interest as a filler due to its exceptional strength, flexibility, and conductivity but faces obstacles in supply implementation. A renewable, plant-based graphene nanoparticle (pGNP) presents more accessible with the same properties mineral graphenes. In this study, we examine effects of pGNP, which was sprayed on carbon fiber/epoxy prepreg at loadings from 1.1 4.2 g/m2. The study considered mechanical, thermal, electrical pGNP-composite. An even particle dispersion achieved using spray application pGNP water/alcohol suspension addition surfactants aides. Results show that increases flexural modulus 15%, strength 17%, interlaminar shear mode I fracture toughness by 146%, well 294% thermal 24%, these improvements observed 1.1–2.3 g/m2 loadings.