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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received February 17, 2019
Accepted April 23, 2019
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Effect of filler size on thermal properties of paraffin/silver nanoparticle composites

Advanced Industrial Chemistry Research Center, Korea Research Institute of Chemical Technology, Ulsan 44412, Korea
dklee@krict.re.kr, dklee6677@gmail.com
Korean Journal of Chemical Engineering, June 2019, 36(6), 1004-1012(9), 10.1007/s11814-019-0282-2
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Abstract

The effects of different filler sizes on the thermal properties were investigated in a thermal conductive composite (TCC) phase-change material (PCM) with three sizes (9, 65, and 300 nm) of silver nanoparticles (Ag NPs). Ag NP/paraffin composites (Ag/PW) were prepared by dispersing 0.5, 1.0, 1.5, and 2.0wt% of Ag NPs stably into molten paraffin using ultra-sonication and then solidifying the mixture. The thermal properties of the composite, such as the thermal conductivity, latent heat capacity, and thermal stability, were characterized by laser flash analysis (LFA), differential scanning calorimetry (DSC), and thermal gravimetric analysis (TGA), respectively. The degree and trend of the enhancement of the thermal properties differed based on the Ag NP size, and the efficiency increased with a decreasing particle size. In addition, we adopted some theoretical models to describe the behavior of thermal conductivity enhancement in this study. The results were explained by the difference in the interfacial area and degree of construct cluster of the Ag NPs, which were dependent on the particle size.

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