Ultra‐High Loading of Coal‐Derived Flash Graphene Additives in Epoxy Composites

Abstract Graphene has proved to be an exceptional reinforcing additive for composites, but the high cost of its synthesis largely prevented addition on industrial scales. Flash Joule heating provides a rapid, bulk‐scale method graphene from coal materials, such as metallurgical coke (MC), into coke‐derived flash (MCFG). Here, this work investigates properties graphene‐epoxy composites in higher nanofiller content regime than previously been reported literature. Composites with 20 50 wt% loading MCFG are prepared by combining diglycidyl ether bisphenol A epoxy precursor (DGEBA) and 1,5‐diamino‐2‐methylpentane. With 1:2 ratio MCFG:DGEBA, Young's modulus increases 92% 1:3 ratio, hardness 140%. At 1:4 compressive strength maximum strain increase 145% 61%, respectively. toughness 496%. Finally, at 1:1 GHG emissions, water consumption, energy consumption reduced 33%, 47%, 34%, As FG plummets, since it can produced very low materials like MC, milliseconds no solvent or water, prospects promising high‐loading use composites.