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| Aging Properties of Carbon Nanotubes/Carbon Fiber/Epoxy Resin Composites |
| QIU Jun1,2** CHEN Dianbing1 QIU Tingting1 LI Dan1 JIN Lei1 |
1. School of Materials Science and Engineering, Tongji University; Shanghai 201804;
2.Key Laboratory of Advanced Civil Engineering Materials of Education of Ministry, Shanghai 201804 |
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Cite this article:
QIU Jun, CHEN Dianbing, QIU Tingting, LI Dan, JIN Lei. Aging Properties of Carbon Nanotubes/Carbon Fiber/Epoxy Resin Composites. Chinese Journal of Materials Research, 2013, 27(2): 131-138.
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Abstract The chemical modification of multi-walled carbon nanotubes (MWNTs) was carried out with hexamethylene diamine (HMD), and the carbon nanotubes/carbon fibers (CF)/epoxy resin (EP) composites were prepared. This paper was aim to study the anti-aging properties and failure mechanisms of the CF/MWNTs-EP three-phase composites through detecting mechanical properties and morphology of fracture surface. The addition of MWNTs-NH2 in the composites increased the salt spray resistance properties, thermal-oxidative aging resistance and damp heat aging resistance under the given aging conditions. Performance of the interfaces between fibers and the matrix resin got improved due to the adding of MWNTs-NH2. Meanwhile, MWNTs-NH2 could promote the curing of the epoxy resin and reduce porosity, resulting in significantly improving aging properties. As 1.0% MWNTs-NH2 was added, the salt spray resistance of three-phase composite material in the salt spray times of 72 h and 168 h was improved by 61.8% and 67.5% respectively compared with CF/EP composite. The thermal-oxidative aging resistance of the three-phase composite materials in the thermal-oxidative aging times of 48 h, 96 h and 168h was improved by 43.5%, 48.5% and 41.7% respectively compared with that of CF/EP composites. In addition, the damp heat aging resistance of three-phase composite materials in the different damp heat aging of 72 h and 168h was improved by 52.8% and 60.0% respectively compared with that of CF/EP composite.
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