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Effect of the surface modification using MWCNTs with different L/D by two different methods of deposition on the IFSS of single carbon fiber-epoxy resin composite KCI 등재
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/347742
Multiwall carbon nanotubes (MWCNT) with two different (L/D) aspect ratios (7±2 μm/140±30 nm and 0.5–2 μm/8–15 nm) were surface treated using nitric acid (HNO3) and polyethyleneimine (PEI) prior to their deposition on carbon fibers (CF). Before the hierarchical reinforcement with CF-MWCNT, the CFs were treated with 3-glycidoxypropyltrimethoxysilane, a coupling agent (Z6040) and with poly(amidoamine) (PAMAM) a dendrimer containing an ethylenediamine core and amine surface groups. The MWCNT were deposited on the CF using two methods, by electrostatic attraction and by chemical reactions. The changes in the CF surface morphology after the MWCNT deposition were analyzed using SEM, which revealed a higher density and uniform coverage for the PAMAM-treated CF and the short MWCNTs. The interfacial adhesion of the composite materials was evaluated using the single fiber fragmentation technique. The results indicated an improvement in the interfacial shear strength with the addition of the short-MWCNTs treated with acid solutions and grafted onto the surface of the CF fiber using electrostatic attraction.
1. Introduction
2. Experimental
2.1. Materials
2.2. Surface treatment of carbon fibers
2.3. Characterization of carbon fibers
2.4. Functionalization of carbon nanotubes
2.5. Characterization of CNTs
2.6. MWCNT grafting on the carbon fibers
2.7. Development of hybrid composite material
2.8. Characterization of carbon fibers withMWCNTs deposited on their surface
2.9. Evaluation of the IFSS using the singlefiberfragmentation technique
3. Results and Discussion
3.1. Carbon fibers
3.2. Carbon nanotubes
3.3. Carbon fiber with MWCNT
3.4. Determination of IFSS using the single fiberfragmentation test
4. Conclusions
Conflict of Interest
Acknowledgements
References
