Authors:
J. Zeng

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Z. Cao Changsha University of Science and Technology School of Chemistry and Environmental Engineering Changsha 410076 P. R. China

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D. Yang Changsha University of Science and Technology School of Chemistry and Environmental Engineering Changsha 410076 P. R. China

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F. Xu Chinese Academy of Sciences Materials and Thermochemistry Laboratory, Dalian Institute of Chemical Physics Dalian 116023 P. R. China

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L. Sun Chinese Academy of Sciences Materials and Thermochemistry Laboratory, Dalian Institute of Chemical Physics Dalian 116023 P. R. China

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X. Zhang Changsha University of Science and Technology School of Chemistry and Environmental Engineering Changsha 410076 P. R. China

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L. Zhang Changsha University of Science and Technology School of Chemistry and Environmental Engineering Changsha 410076 P. R. China

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Abstract  

The effects of multi-walled carbon nanotubes (MWNTs) on the phase change enthalpy (ΔH) and the thermal conductivity (κ) of a solid-liquid phase change materials (PCM), palmitic acid (PA), have been investigated. The results showed that both the ΔH and the κ of the composite were lower than that of PA when the loading of MWNTs was small. As the concentration of MWNTs in the composites increased, the ΔH of the composites was slightly improved and then decreased linearly. However, the κ of the composites was monotonously increased from the minimum value. When the loading of MWNTs increased to 5% and no surfactant was added, the κ of the composite was enhanced to be 26% higher than that of PA. The κ of the composite could be enhanced by CTAB instead of SDBS when the loading of MWNTs was small, as SDBS showed no obvious effect on the κ of the composites. Furthermore, the effects of surface modification of MWNTs on the ΔH and the κ of the composites have also been investigated.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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