1 research outputs found
Enhanced Thermal Conductivity of Phase Change Microcapsules Based on Boron Nitride/Graphene Oxide Composite Sheets
Large energy storage capacity and
high heat conduction
are very
important for phase change materials. Phase change microcapsules (PCMCs)
were synthesized through in situ polymerization by using paraffin
as the core material. The melamine–formaldehyde (MF) polymer
shell of PCMCs was modified with boron nitride/graphene oxide composite
sheets (BN/GO CSs) to improve thermal conduction. The preparation
condition of BN/GO CSs through the self-assembly process and the synthesis
process of composite PCMCs (CPCMCs) in the presence of BN/GO CSs were
systematically investigated. The thermal conductivity of CPCMCs synthesized
under the optimized condition significantly increased about 190% relative
to the incorporated paraffin. Promisingly, the introduction of BN/GO
CSs hardly influenced the encapsulation process, allowing high encapsulation
rate (>93%) and high phase change enthalpy (∼200 J·g–1). This work is an enlightening complementarity to
the very limited research attempts that incorporating multiple fillers
in PCMCs. We postulated and proved the synergistic effect of BN/GO
CSs and their advantages in improving the thermal conductivity of
the resultant PCMCs without scarifying the essential heat storage
capacity. We envision that the insights and the CPCMCs synthesized
can be applied in a range of material designs for energy and electronic
applications