The fatty acid stearic acid has been widely studied for its use in thermal energy storage applications as a phase change material (PCM). Stearic acid shows promise for this application because of its high volumetric storage density and its favorable thermal properties; however, two properties of stearic acid limit its use as a PCM: its low thermal conductivity and its propensity to leak liquid during the phase change process. This ...
Through the addition of synthetic graphite particles and carbon fiber to nylon 6,6 in amounts of 10-40 wt.% and 5-40 wt.% respectively, nylon composites were prepared. These composites were then analyzed using the guarded heat flow apparatus to measure through-plane thermal conductivity. Then the transient plane source (TPS) technique was used to measure the through-plane and in-plane thermal conductivities of the composites to compare to the guarded heat flow apparatus. A ...
Through the addition of expanded graphite (EG) to polyethylene glycol, the authors were able to enhance the thermal conductivity of the phase change material (PCM). The transient plane source (TPS) technique was used to measure the thermal conductivity of the PCM. The amount of EG affected thermal conductivity, while amount of polyethylene glycol affected latent heat. Through the use of EG, the thermal conductivity was raised fourfold.....
Through the dispersion of graphite nanoplatelets in a silicone matrix and mechanical mixing, graphite nanoplatelet/silicone composites were prepared. These composites were subsequently analyzed by the transient plane source (TPS) technique in order to determine thermal conductivity. DSC and XRD were used to further characterize the composites....
Sebacic acid (SA) can be absorbed into the pores of expanded graphite (EG) to form a SA/EG composite phase change material (PCM). There is no chemical interaction between the SA and EG, they are merely integrated. The optimal amount of SA was found to be 85 wt.% of the total mixture. The 85 wt.% composite had a phase change temperature of ~ 128°C, with a latent heat of ~ 187 J/g. The thermal ...
