Research on Expanded Graphite/Nitrate High-Temperature Composite Phase Change Materials

Yue Feng Li

doi:10.4028/www.scientific.net/AMM.740.11

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 740Research on Expanded Graphite/Nitrate...

Research on Expanded Graphite/Nitrate High-Temperature Composite Phase Change Materials

Abstract:

In order to enhance the thermal conductivity of high-temperature phase change materials (PCMs), expanded graphite (EG) /NaNO₃-LiNO₃ composite was prepared by the method of eutectic aqueous solution infiltration porous structure of EG. The composites with an EG amount of 10%, 20% and 30% were prepared in the similar way. The results proved that the eutectic was an excellent PCM, for its melting (solidification) temperature was 193.7 (191.7) °C, and its latent heat was 272.6(262.6) kJ/kg. With the increasing in graphite amount, the thermal conductivity of the composite was found to progressively increase with intensifications up to 10. We can conclude that the saturated water solution method was a simple and effective way to strengthen the thermal conductivity of the eutectic.

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Periodical:

Applied Mechanics and Materials (Volume 740)

Pages:

11-14

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.740.11

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Online since:

March 2015

Authors:

Yue Feng Li*

Keywords:

High Temperature, Inorganic Salt, Phase Change Material, Thermal Conductivity

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