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Vol. 27 No. 11 (2015): Vol 27 Issue 11

Copyright (c) 2015 AJC

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Enhanced Physical and Thermal Performance of Expanded Graphite-Based Heat Sink for LED Radiator

https://doi.org/10.14233/ajchem.2015.19096
Shu Ye
Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungnam 356-706, Republic of Korea
Lei Zhu
Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungnam 356-706, Republic of Korea
Asghar Ali
Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungnam 356-706, Republic of Korea
Kefayat Ullah
Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungnam 356-706, Republic of Korea
Hamid Ullah
Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungnam 356-706, Republic of Korea
Won-Chun Oh
Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungnam 356-706, Republic of Korea

Corresponding Author(s) : Won-Chun Oh

wc_oh@hanseo.ac.kr

Asian Journal of Chemistry, Vol. 27 No. 11 (2015): Vol 27 Issue 11

Abstract

An experimental study was carried out to investigate the heat transfer characteristics of Cu and Al–modified expanded graphite heat sinks. In this study, the heat sinks were composed of expanded graphite as an active material, Cu and Al as heat transfer enhancement material and resin as a binder. Graphite with high purity was obtained via treated with different amount of Na2CO3. The as-prepared heat sinks were characterized by XRD, pH, SEM, electrical resistivity, bending strength and thermal analysis. The metal Al modified expanded graphite composite heat sink in our experiment exhibited a good rate of capability in physical and thermal performances. Sample GA5-300 showed highest thermal diffusivity and thermal conductivity.

Keywords

Expanded graphite Thermal diffusivity and conductivity Heat transfer
Ye, S., Zhu, L., Ali, A., Ullah, K., Ullah, H., & Oh, W.-C. (2015). Enhanced Physical and Thermal Performance of Expanded Graphite-Based Heat Sink for LED Radiator. Asian Journal of Chemistry, 27(11), 4076–4080. https://doi.org/10.14233/ajchem.2015.19096
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