Study on thermal properties of graphtie/paraffin composites as phase change heat storage material

EG was exfoliated into MSGF under high-energy ultrasound, and then the graphite/paraffin composite was prepared by mixing MSGF into melted paraffin. The structure and thermal properties of the composites were characterized using SEM, Hot Disk, and DSC. The experimental results show that the composites exhibit both high thermal conductivity and good thermal storage capacity, the speed of heat storage is raised and the chemical properties are stable. Moreover, with the increase of MSGF's mass fraction, the thermal conductivity behaves non-liner increase both in solid and liquid states. Meanwhile, the melting point and latent heat capacity show negligible decrease. ©.