A joint research team involving Professor Kim Seong-hoon of the Department of Organic and Nano Engineering at Hanyang University has found out that high-content of graphene can increase the heat conductivity of composite materials.

New material graphene, which has the best thermal conductivity, has attracted attention as a filler of the next-generation heat-dissipating composite material, but a problem has arisen that the thermal conductivity of the manufactured composite is lower than expected.

The joint research team, which Professor Kim participated in, focused on lowering interfacial thermal resistance (ITR), a factor that lowers thermal conductivity in composite, and focused on research. Afterwards, the research team found out that a composite with a high content of graphene decreases thermal resistance and thus increases the thermal conduction of the composite through various experiments.

The thermal conductivity of the composite material of the research was interpreted by applying a Nan's model and a Percolation model to before and after percolation, respectively.

Meanwhile, the findings were published in the SCI-level international journal 『Composites Communications』 (IF: 6.617), with ‘Enhanced thermal conductivity of graphene nanoplatelet filled polymer composite based on thermal percolation behavior’ as a title.