Effect of Processing Techniques Used for Improvement of Mechanical Properties of Glass Fiber Epoxy Nano Composites

Abstract:

The incorporation of carbon nanofibers with a high aspect ratio and extremely large surface area into glass/epoxy polymers improve their mechanical properties significantly. Previously large number of efforts have been made to improve mechanical properties by mixing carbon nanofibers into resin, however, it may raise high viscosities which create difficulties during manufacturing of polymer composite samples. Presently, an attempt has been made to improve mechanical properties of nanocomposites by using, a different technique i.e spraying the Carbon nanoFibers (CNF) on glass fabric layers before impregnating it with epoxy resin. This paper presents influence of two different processing techniques used for manufacturing of polymer nanocomposites. Firstly, solution was prepared to obtain well dispersed epoxy resin filled with 1.0 wt % CNF, to impregnate carbon fabric in a vacuum assisted resin transfer molding (VARTM) setup for sampling. Secondly, the nanocomposite samples were prepared using a spraying methodology i.e dispersing the CNF solution on carbon fabric and followed by VARTM. Tensile, compression and flexural tests were performed to evaluate the effectiveness of CNF addition on the improvement of mechanical properties by using both techniques. Results indicated, CNF addition offered simultaneous increase in mechanical properties in different percentages by using both the processes respectively. SEM analysis of fractured surfaces has also been carried out to examine the micro structural details of in-depth study.

• Periodical: Applied Mechanics and Materials (Volume 332)
• Pages: 363-368
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.332.363
• Online since: July 2013
• Authors: Ali Sarim, Bo Ming Zhang, Chang Chun Wang
• Keywords: Carbon Nanofiber, Epoxy Resin (ER), Mechanical Property, Nanocomposite, VARTM

References

[1] Plumtree A, Ostagathe M. Matrix fatigue damage evolution in a longitudinal CFRP composite. In: Carpinteri A, editor. Proceedings, paper 3342, 20–25 March 2005, p.1–5.

[2] Lee J, Soutis C. A study on the compressive strength of thick carbon fibre-epoxy laminates. Compos Sci Technol 2007;67(10):2015–26.

DOI: 10.1016/j.compscitech.2006.12.001

[3] Gamstedt EK, Sjögren BA. Micromechanisms in tension–compression fatigue of composite laminates containing transverse plies. Compos Sci Technol 1999;59(2):167–

DOI: 10.1016/s0266-3538(98)00061-x

[4] J.B. Donnet, Compos. Sci. Technol. 63 (2003) 1085–1088.

[5] R.J. Day, P.A. Lovell, A.A. Wazzan, Compos. Sci. Technol. 61(2001) 41–56. R. Bagheri, R.A. Pearson, Polymer 41 (2001) 269–276.

[6] V.M.F. Evora, A. Shukla, Mater. Sci. Eng. A361 (2003) 358–366

[7] M. Hussain, Y. Oku, A. Nakahira, K. Niihara, Mater. Lett. 26 (1996) 177–184.

[8] M.L. Lake, J.M. Ting, Vapor grown carbon fiber composites, in:T.D. Burchell (Ed.), Carbon Materials for Advanced Technologies,Pergamon Press, Oxford, UK, 1999, p.139–167.

DOI: 10.1016/b978-008042683-9/50007-8

[9] F.W.J. Van Hattum, C.A. Bernardo, J.C. Finegan, G.G. Tibbetts, R.L. Alig, M.L. Lake, Polym. Compos. 20 (5) (1999) 683–688.

DOI: 10.1002/pc.10391

[10] C.J. Dasch, W.J. Baxter, G.G. Tibbetts, Thermoplastic composites using nanometer-size vapor-grown carbon fibers, in: Proceedings of the 21st Bienn Conference on Carbon, Buffalo, NY, 1993, p.82–83.

[11] V. Chellappa, Z.W. Chiou, B.Z. Jang, Electrical behavior of carbon whisker reinforced matrix composites, in: Proceedings of the 26th SAMPE Tech. Conference, 1994, p.12–18.

[12] Kim M, Park Y, Okoli O, Zhang C. Processing, characterization, and modeling of carbon nanotube-reinforced multiscale composites. Compos Sci Technol 2009;69(3–4):335–42.

DOI: 10.1016/j.compscitech.2008.10.019

[13] Cartiè D, Troulis M, Partridge I. Delamination of Z-pinned carbon fibrereinforced laminates. Compos Sci Technol 2006;66:855–61.