Preparation and Characterization of Lauric–Myristic Acid/Expanded Graphite as Composite Phase Change Energy Storage Material

Lauric acid (LA) and myristic (MA) were used to prepare a binary eutectic mixture. The expanded graphite (EG) was as the carrier, lauric–myristic acid/expanded (LA–MA/EG) composite phase change material prepared by physical adsorption method. microstructure, chemical structure, thermal properties of LA–MA/EG characterized scanning electron microscopy (SEM), differential calorimeter (DSC), Fourier transform infrared spectroscopy (FTIR), conductivity measurement. experimental results have shown that maximum mass ratio mixture in energy-storing 92.2%, there mixing has no reaction between LA–MA EG. fusion point temperature 33.4°C, solidification 33.8°C, latent heat 171.1 J/g, which suitable for building energy storage field. After several cycles, potential materials very small, it still good performance.