Tensile Properties and Microscopic Mechanism of Carbon Nanotube/Graphene Foam Materials

Compared to pure carbon nanotube (CNT) foam (CF) and graphene (GrF), the CNT/graphene composite show enhanced mechanical properties, using coarse-grained molecular dynamics method, tensile compressive properties corresponding deformation mechanism of several typical foams were studied. The CNT coating could enhance bending resistance graphene, based on CNT-coated flakes, (CCGF) is constructed, which shows better modulus due flakes compared in GrF [1]. can not only by influencing but also enhancing crosslinkers between graphene. response microscopic interconnected both short long CNTs (named bonded GrF, CbGrF) under tension compression are further Under tension, play a reinforcing role at larger strain, leading strength toughness. compression, sliding rotation CbGrF prevented CNTs, resulting higher stiffness than that GrFs [2]. Finally, we studied graphene-filled (GFCF) mechanism. It found filling inhibits aggregation impedes rearrangement enhances dispersion ultimately improves whole material through improving ability CNTs. results this paper deepen understanding mechanisms provide scientific guidance for application graphene-based materials