An investigation on heat transfer of three-dimensional graphene oxide network shape memory anti-/deicing component

Abstract

Shape memory three-dimensional graphene oxide/epoxy resin (3D-GO/EP) anti-/deicing component with high heat transfer was successfully synthesized by employing GO sheets hosted by Polyurethane sponge as templates. The thermal energy transfer characteristics of shape memory EP composites modified with 3D-GO was investigated by the representative volume elements (RVE) modeling. The numerical simulation results indicated that the increase of volume fraction of 3D-GO was limited due to the extremely high thermal conductivity and the network structure. The thermal conductivity of shape memory EP composites increased to 2.74 ∼ 5.69 times as the volume fraction of 3D-GO sponge increased within 1 vol%, which was up to 2.05 W/(m·K). The energy conversion efficiency was increased to 44.40 % after doping 0.5 vol% 3D-GO sponge. Moreover, the influence of structural parameters such as the length, thickness and effective radius of 3D-GO sponge on thermal conductivity was studied. The 3D-GO sponge with short length, large effective radius and large thickness doped in the shape memory 3D-GO/EP anti-/deicing componentsignificantly improved the heat transfer efficiency. The heat transfer rate of the shape memory 3D-GO/EP anti-/deicing component was significantly improved, which reached up to 4.69 ℃/s with the heating condition of 5000 W/m2.