Add time:10/01/2019 Source:sciencedirect.com
Amine functionalization of graphene/graphene-like MoSe2 (NH2-rGO/MoSe2) hybrid nanosheets were synthesized by a facile hydrothermal method. Then, as lubricant additives, the hybrids were doped into Bismaleimide (cas 13676-54-5) (BMI) matrix to reinforce the mechanical and tribological properties of BMI composites. Graphene-like MoSe2 was introduced into rGO to prevent re-stacking of the layers. The microstructure of NH2-rGO/MoSe2 was also characterized. When the content of NH2-rGO/MoSe2 was 0.6 wt.%, the composite could achieve the highest impact and flexural strengths of 19.3 kJ/m2 and 167.2 MPa, respectively. For the 0.4 wt.% NH2-rGO/MoSe2/BMI composite, it reached the minimum values for coefficient of friction and volume wear rate of 0.22 and 2.03 × 10−6 mm3/(N·m), decreased by 47.6% and 87.6% in comparison with those of pure BMI, respectively. The NH2-rGO/MoSe2 hybrids, acting as solid lubricants, played a key role in the enhanced toughness of the composites and interfacial strength between BMI matrix and filler. Thus, the improved tribological properties of the NH2-rGO/MoSe2/BMI composites were obtained.
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