Property enhancement of a carbon fiber/epoxy composite by using carbon nanotubes

Kim, M. T. and Rhee, K. Y. and Lee, J. H. and Hui, D. and Lau, Alan K. T. (2011) Property enhancement of a carbon fiber/epoxy composite by using carbon nanotubes. Composites Part B: Engineering , 42 (5). pp. 1257-1261. ISSN 1359-8368


We investigated the effect of carbon nanotube (CNT) modifications on the flexural and wear behaviors of multiscale carbon/CNT/epoxy composites in this study. Carbon/epoxy woven composites and two types of multiscale carbon/CNT/epoxy composites were fabricated by incorporating woven-type carbon fibers into epoxy matrices modified with 2 wt% acid-treated and silane-treated multi-walled carbon nanotubes (MWCNTs). Three-point bending and ball-on-disk wear tests were performed on the three composites. The results showed that the flexural moduli and strengths of carbon/CNT/epoxy composites were greater than those of carbon/epoxy composites, regardless of CNT modification. Specifically, the flexural modulus and strength of the silane-treated specimens were 10% and 15% greater, respectively, than those of the acid-treated samples. The results also showed that the wear properties of carbon/epoxy composites are improved by the addition of CNTs. In addition, the wear properties of silane-treated samples were superior to those of acid-treated samples. Scanning electron microscopic examination of fractured and worn surfaces showed that the improvement in the flexural and wear properties of the silane-treated carbon/CNT/epoxy composites was attributed to the improved dispersion of CNTs in the epoxy and the better interfacial characteristics caused by the silanization of the CNTs.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version due to publisher copyright restrictions.
Faculty/School / Institute/Centre: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 29 Mar 2012 06:37
Last Modified: 17 Oct 2014 05:38
Uncontrolled Keywords: carbon fibre; wear; fibre/matrix bond; surface treatments
Fields of Research : 10 Technology > 1007 Nanotechnology > 100707 Nanomanufacturing
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
10 Technology > 1007 Nanotechnology > 100708 Nanomaterials
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1016/j.compositesb.2011.02.005

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