碳纤维/碳纳米管-环氧树脂复合材料的耐老化性能*

材料研究学报

2013, Vol. 27

Issue (2): 131-138

研究报告

本期目录 | 过刊浏览

碳纤维/碳纳米管-环氧树脂复合材料的耐老化性能*

邱军^{1, 2} 陈典兵¹ 邱挺挺¹ 李旦¹ 金磊¹

1. 同济大学材料科学与工程学院上海 201804
2. 先进土木工程材料教育部重点实验室上海 201804

Aging Properties of Carbon Nanotubes/Carbon Fiber/Epoxy Resin Composites

QIU Jun^1,2** 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

引用本文:

邱军陈典兵, 邱挺挺, 李旦, 金磊. 碳纤维/碳纳米管-环氧树脂复合材料的耐老化性能*[J]. 材料研究学报, 2013, 27(2): 131-138.
. Aging Properties of Carbon Nanotubes/Carbon Fiber/Epoxy Resin Composites[J]. Chinese Journal of Materials Research, 2013, 27(2): 131-138.

全文: PDF(2310 KB)

摘要:

摘要将环氧树脂基体与氨基化碳纳米管( MWNTs)复合, 制备了碳纤维/氨基化碳纳米管-环氧树脂(CF/MWNTs-EP)复合材料。表征CF/MWNTs-EP三相复合材料的断面, 并在标准条件下测试其冲击、拉伸等力学性能, 研究了耐老化性能。结果表明: 氨基化碳纳米管的加入明显提高了材料的耐盐雾性、耐热氧老化性和耐湿热性能。氨基化碳纳米管的加入改善了纤维与基体树脂间的界面性能, 同时, 促进了环氧树脂的固化, 降低孔隙率, 导致耐老化性能显著提高。当MWNTs-NH₂的添加量( 质量分数)为1.0%时, 在72 h和168 h不同盐雾时间下, 三相复合材料的耐盐雾老化性比CF/EP复合材料分别提高了61.8%和67.5%。在48 h、96 h和168 h热氧老化时间下, 三相复合材料的耐热氧老化性比CF/EP复合材料分别提高了43.5%、48.5%和41.7%。在72 h和168 h不同湿热时间下, 三相复合材料的耐湿热老化性比CF/EP复合材料分别提高了52.8%和60.0%。

关键词 ：复合材料, 碳纳米管, 碳纤维, 环氧树脂, 老化性能, 三相复合材料

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-NH₂could 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.

Key words： composites carbon nanotubes carbon fiber epoxy resin aging properties three-phase composite materials

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