Thermal percolation behavior of GNP-based segregated composites including excluded volume effect
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초록
내용
While thermal condensation inside electronic devices is being pointed out as a problem, graphene-based polymer composites are evaluated as a promising solution. Compared to composites with randomly dispersed fillers, segregated composites (S-CPC), which induce selective localization of fillers, use relatively less fillers and exhibit superior conduction properties. The segregated network contributes to achieving high thermal conductivity by switching from a system governed by interfacial thermal resistance (ITR) that generates severe phonon scattering to a system dominated by contact thermal resistance (CTR). The thermal percolation model is a useful theoretical approach to evaluating the thermal conductivity of CTR-dominant composites. This study provides a more accurate interpretation of the thermal percolation behavior of S-CPC by analyzing the thermal conductivity behavior of S-CPC by applying the excluded volume effect.