Synthesis and Thermal Stability Analysis of Slurry Core-Shell Nano Phase Change Materials

The energy crises of the current century, led humans to ponder new energy sources. One of the interesting methods is the application of Phase Change Materials (PCMs), which is not only used for the purpose of storing heat energy but also is used for the purpose of heat insulation. Besides their advantages, PCMs may have some limitations such as leaking problems and low thermal conduction coefficient. Thus, adding metallic nanoparticles and shell-core structures can improve their thermal properties. In this research, N-octadecane is chosen as core and methyl methacrylate as a shell to synthesize nanoscale materials with core-shell structure. In this work, instruments including SEM, DSC, TEM, and sonicator have been used. The results of the experiments showed that synthesized phase change materials have a mean 79 nm diameter and have a core-shell structure. On the other hand, slurry nanophase change materials have maintained their thermal properties after many cycles and this can be considered as the main advantage in thermal management of different systems. In summary, it is revealed that PCMs and their composites possess advantages in thermal applications. These materials can have a critical and valuable role in thermal management.