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Materials 2018, 11(6), 950; https://doi.org/10.3390/ma11060950

Experimental Study on Characteristics of Grinded Graphene Nanofluids with Surfactants

1
Department of Energy and Mechanical Engineering, Gyeongsang National University, 38, Cheondaegukchi-gil 53064, Tongyeong-si, Korea
2
Department of Mechanical & Automotive Engineering, Suncheon Jeil College, 17 Jeildaehak-gil 57997, Suncheon-si, Korea
3
Department of Exploration System Research, KIGAM Pohang Branch, 905, Yeongilman-daero 37559, Pohang-si, Korea
*
Author to whom correspondence should be addressed.
Received: 11 May 2018 / Revised: 30 May 2018 / Accepted: 1 June 2018 / Published: 4 June 2018
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Abstract

In earlier studies, much research has focused on increasing the efficiency of heat exchanger fields. Therefore, in this study, graphene nanofluid was fabricated for use as a heat transfer medium for a heat exchanger. Graphene has excellent electrical conductivity, mechanical properties, and heat transfer properties. It is expected that the heat transfer efficiency will be improved by fabricating the nanofluid. However, graphene is prone to sedimentation, because of its cohesion due to van der Waals binding force. In this experiment, a nanofluid was fabricated with enhanced dispersibility by surfactant and the ball-milling process. The zeta potential, absorbance, and thermal conductivity of the nanofluid were measured. As a result, when using the ratio of 2:1 (graphene:sodium dodecyl sulfate (SDS)), a higher thermal conductivity was obtained than in other conditions. View Full-Text
Keywords: graphene; thermal conductivity; nanofluid; surfactant; zeta potential; dispersibility graphene; thermal conductivity; nanofluid; surfactant; zeta potential; dispersibility
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Seong, H.; Kim, G.; Jeon, J.; Jeong, H.; Noh, J.; Kim, Y.; Kim, H.; Huh, S. Experimental Study on Characteristics of Grinded Graphene Nanofluids with Surfactants. Materials 2018, 11, 950.

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