Optimal Dispersion Conditions and Heat Dissipation Characteristics According to Changes in Particle Size, Dispersant, and Binder of Graphene Flakes

To determine the optimal dispersion conditions of graphene flakes for ink, its heat dissipation properties were investigated by changing the particle size, dispersant, and binder types. In the case of particle size, the smaller the size of the graphene flakes, the better the dispersion, and regardless of the amount of dispersant and the type of binder, the greatest dispersion effect was exhibited by the mixed dispersant. Under these conditions, internal cohesion did not occur as in Newtonian flow over time, and for this reason, heat was released quickly, with a rapid cooling rate. It is clear that this process of determining the optimal dispersion conditions considering multiple factors will provide a good reference for determining dispersion conditions for various variables in the future.