Category: Transient Plane Source
Author(s): Nan Zhang, Tianyu Li, Weiyue Long, Xiaoling Cao, Yanping Yuan
Keywords: expanded graphite, graphene, Graphene nanoplatelets, graphite, pcms, phase change materials, Thermal Conductivity, thermal energy storage, Thermal Properties
Abstract: The purpose of this study was to improve the wettability of silicon carbide (SiC) nanowires, in order for them to be used as thermoconductive fluids. Multiple experiments were conducted by exposing the SiC nanowires to hydrofluoric acid, tetraethyl orthosillicate, polyvinylpyrolidone and sodium hydroxide. Various tests, including x-ray diffraction, Fourier transformation-infrared, x-ray photoelectron spectroscopy, thermogravimetric analysis, scanning electron microscopy and transmission electron microscopy, were performed on these various materials to identify a phase and morphology change. Once the tests were performed it was clear the SiC nanowires had gained hydrophilic characteristics, as it was noted that the interspace between the nanowires had increased and that a surface tethered hydrophilic layer had formed. An increase hydrophilic characteristics, favors an increase in the thermal conductive abilities of the SiC nanowires. After all analyses were completed, it was determined that the silicon carbide nanowires could be applied as thermoconductive fluids.
Reference: Energy, 97 (2016) 488–497