Abstract
The waviness effect of graphene nanoplates (GNPs) on the thermal conductivity of GNP-based composites is investigated. Two types of wrinkled GNPs (w-GNPs) and flat GNPs (f-GNPs) are used to fabricate GNP/epoxy composites. Thermal conductivity enhancement is observed in both types of composites. However, under the same processing, f-GNPs exhibit a higher thermal conductivity enhancement than w-GNPs. We finally introduce a concept, the waviness factor, to theoretically analyze the thermal conductivity considering the waviness effect of GNPs. The theoretical predictions are found to show good agreement with experimental observations.
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Acknowledgements
This study was financially supported by the National Natural Science Fund of China (No. 51165021), the Gansu Province Science Fund for Distinguished Young Scholars (111RJDA0103), and the Doctoral Start-up Scientific Research Fund (2011010431).
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Chu, K., Li, Ws. & Dong, H. Role of graphene waviness on the thermal conductivity of graphene composites. Appl. Phys. A 111, 221–225 (2013). https://doi.org/10.1007/s00339-012-7497-y
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DOI: https://doi.org/10.1007/s00339-012-7497-y