▎ 摘　　要

In this study novel magnetized graphene oxide-modified microencapsulated phase change material (Mn GO/ MEPCM) is developed by in-situ polymerization technique. As well as modified microcapsules with expanded graphite (EG) and graphene oxide (GO) were also prepared by the same method. The thermo-chemical characterization results given that both the modified and unmodified MEPCM are spherical-shaped microcapsules with an average diameter of 5 mu m. The thermal conductive co-filler is situated as an interface layer between the MF shell and the paraffin core. The DSC results revealed that 1.5 Mn GO-modified MEPCM has the highest latent heat of enthalpy and encapsulation ratio given as 185.4 J/g and 88.28 % respectively. The specific heat capacity of the samples found decreased with the density. In addition, it possesses remarkable form stability with comparable leakage prevention rates as well as a maximum thermal conductivity of 0.45 W/m K. The heat transfer performance study was evaluated by continuous heating and cooling cycle. The 1.5 Mn GO/MEPCM sample completed three cycles in 122.6 min with an efficiency of 70% more than the unmodified MEPCM. The enhanced thermal energy storage property and thermal stability of the Mn GO-added MEPCM are evaluated by the accelerated 20 thermal cycle performance analysis. The results concluded that the developed Mn GO/MEPCM has promised its potential for high-temperature heat transfer applications.