Nano-SiO₂ particles and MWCNTs were used to reinforce the EPs. The mechanical properties of the composites and the strengthening mechanisms of nano-SiO₂ and MWCNTs on the mechanical properties of epoxy composites were studied. The results show that the mechanical properties of the reinforced epoxy composites are greatly improved. Especially, nano-SiO₂/MWCNTs/EP composites exhibit the most excellent mechanical properties. The synergistic strengthening mechanisms of nano-SiO₂ and MWCNTs on the EP are the micro plastic deformation effect, micro-cracks and their divarication effect, and the pull-out effect of MWCNTs in EP matrix, which can reduce the extent of stress concentration and absorb more energy.

使用纳米SiO ₂颗粒和MWCNT来增强EP。研究了复合材料的力学性能以及纳米SiO ₂和MWCNTs对环氧复合材料力学性能的增强机理。结果表明，增强的环氧复合材料的机械性能得到了很大的改善。尤其是，纳米SiO ₂ / MWCNTs / EP复合材料表现出最优异的机械性能。纳米SiO ₂和MWCNTs对EP的协同增强机理是微观塑性变形效应，微裂纹及其分散作用，以及MWCNTs在EP基体中的拔出效应，可以减小应力集中的程度。吸收更多的能量。