Thermal-mechanical enhancement investigation of shape memory polymer nanocomposite for anti-/deicing

Abstract

The oriented arrangement of graphene oxide (GO) and magnetic graphene oxide (MGO) in shape memory epoxy resin (EP) by employing the coupling effect of electric and magnetic fields were investigated. The heat transfer experiments showed that the thermal conductivity of the aligned shape memory MGO/GO/EP composites was 90.29% higher than that of the random doped composites. Through the two-dimensional aligned of MGO, the tensile strength of the shape memory MGO/GO/EP composite was significantly improved. The tensile strength reaches 24.52 and 22.67 MPa along the X and Y direction respectively, which increased of 53.92% and 42.31%. The shape recovery experiments showed that the shape recovery and shape fixity of the two-dimensional aligned composites were 95.55% and 91.49%, which increased by 4.44% and 7.82%. The results demonstrated that the two-dimensional directional arrangements of MGO layers significantly enhance the heat transfer and mechanical properties of shape memory polymer. The improvement of thermal conductivity and mechanical properties directly affected the anti-deicing performance of the composites. Hence, the deicing time of the shape memory MGO/GO/EP composite was 324 s, which represented an 18.2% improvement of the deicing efficiency.