Category: Transient Plane Source
Keywords: BN, boron nitride, differential scanning calorimetry, Differential scanning calorimetry (DSC), DSC, Hot Disk Thermal Constants Analyzer, Latent Heat of Fusion, Melting Point, pcms, phase change materials, Scanning Electron Microscope, Scanning electron microscope (SEM), SEM, Solidification Point, TEM, Thermal Conductivity, thermal energy storage, transmission electron microscope, transmission electron microscope (TEM), X-ray Diffraction, X-ray diffraction (XRD), XRD
Abstract: A paraffin-based composite phase change material (PCM) was prepared by the addition of hexagonal boron nitride (h-BN) nanosheets to melted paraffin wax followed by vigorous stirring. The nanosheets were added in quantities ranging from 1 to 10 wt. %. A reference sample of pure paraffin was also prepared. It was determined that the addition of h-BN nanosheets resulted in an increase in thermal conductivity and that the melting and solidification rates were also accelerated as a result of this addition. The composite PCMs described in this article were prepared without surfactants. This resulted in precipitation of h-BN nanosheets as the PCM was consecutively heated and cooled. Further studies needed to be performed to determine the effects of h-BN shape, size, and thickness on the properties of interest.
Reference: Energy Conversion and Management, 80 (2014) 103-109