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Abstract Although the reinforcement effect of molybdenum sulfide (MoS2) nanosheets (MNSs) on the mechanical properties of epoxy (EP) composites has been extensively studied. However, the effect of MoS2 quantum dots… Click to show full abstract
Abstract Although the reinforcement effect of molybdenum sulfide (MoS2) nanosheets (MNSs) on the mechanical properties of epoxy (EP) composites has been extensively studied. However, the effect of MoS2 quantum dots (MQDs) on the mechanical properties of EP composites and comparing them with MNSs has not yet been reported. In this study, we exfoliated bulk MoS2 into MNSs and MQDs and used them as reinforcement materials to fabricate a series of high-performance EP composites. The results demonstrate that MQDs remarkably enhanced the fracture toughness (55–81%), flexural strength (25–66%), modulus (0.7–6%), impact strength (31–118%), and interfacial interactions (surface free energies: 1–21%) compared to neat EP and reinforcement with MNSs at the same additive amount. The superior performance of the EMQD composites over their EMNS counterparts can be attributed to the smaller size (
Journal Title: Composites Part A: Applied Science and Manufacturing
Year Published: 2021
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