Large Enhancement in Thermal Conductivity of Solvent-Cast Expanded Graphite/Polyetherimide Composites.

We demonstrate in this work that expanded graphite (EG) can lead to a very large enhancement in thermal conductivity of polyetherimide-graphene and epoxy-graphene nanocomposites prepared via solvent casting technique. A value of 6.6 W⋅m⋅K is achieved for 10 wt% composition sample, representing an enhancement of ~2770% over pristine polyetherimide (~0.