화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.36, No.6, 1004-1012, June, 2019
DOI10.1007/s11814-019-0282-2  Export Citation
Effect of filler size on thermal properties of paraffin/silver nanoparticle composites
In-Hyun Kim, Hyo-Won Sim, Hee-Hyeon Hong, Dong-Woo Kim, Wonjoo Lee, and Dong-Koo Lee†
  • Advanced Industrial Chemistry Research Center, Korea Research Institute of Chemical Technology, Ulsan 44412, Korea
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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.
Keywords:Phase Change Material (PCM);Silver Nanoparticle (Ag NPs);Filler Size Effect;Thermal Conductivity;Latent Heat Capacity
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