Mechanical properties and strengthening mechanism of epoxy resin reinforced with nano-SiO2 particles and multi-walled carbon nanotubes

• Published in: Chemical physics letters Vol. 695; pp. 34 - 43
• Main Authors: Xiao, Chufan, Tan, Yefa, Yang, Xupu, Xu, Ting, Wang, Lulu, Qi, Zehao
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2018
• Subjects: Epoxy composites; Mechanical properties; Multi-walled carbon nanotubes; Nano-SiO2 particles; Strengthening mechanism; Epoxy composites; Mechanical properties; Multi-walled carbon nanotubes; Nano-SiO2 particles; Strengthening mechanism
• ISSN: 0009-2614; 1873-4448
• DOI: 10.1016/j.cplett.2018.01.060

[Display omitted] •The synergistic effect of MWCNTs and nano-SiO2 on improving the mechanical properties of epoxy resin was found.•The mechanical properties of the nano-SiO2/MWCNTs/EP composites are excellent.•The synergistic mechanism are the micro plastic deformation, micro-cracks and their divarication, and the pull-out of MWCNTs. 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.