Preparation and properties of graphene-epoxy/alumina foam composites

Guan investigates the preparation and properties of graphene-epoxy/alumina foam composites. Graphene-epoxy/alumina foam composites were prepared by repeated impregnation of alumina foam with a graphene oxide (GO) suspension and drying, followed by annealing at 600 to 1000 degrees C under an Ar atmosphere and infiltration of epoxy and crosslinking agents into the foam under vacuum. XRD, SEM and Raman spectroscopy were used to characterize the microstructures of the composites. Results indicated that the GO was reduced more thoroughly at a higher annealing temperature.