Influence of temperature on tensile behavior of multiwalled carbon nanotube modified epoxy nanocomposites

Revathi, A and Sandhya, Rao and Kavitha, Rao V and Prakash, M.Rajendra and Murugan, M. Sendil and Shylaja, Srihari and Dayananda, GN (2014) Influence of temperature on tensile behavior of multiwalled carbon nanotube modified epoxy nanocomposites. Journal of Materials Research, 29 (15). ISSN 0884-2914

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Official URL: http://dx.doi.org/10.1557/jmr.2014.197

Abstract

An investigation was carried out to characterize the tensile behavior of multiwalled carbon nanotube (MWCNT) modified epoxy nanocomposites in the glassy, viscoelastic, and rubbery regimes. 1 and 2 wt% MWCNT predispersed epoxy was used in this study. The cured samples were characterized using dynamic mechanical analysis for selection of different temperatures. The stress–strain behavior and toughness were determined in the temperature band of 25–140 °C. Addition of 1% CNT resulted in 16% improvement in the storage modulus at glassy state but 6% reduction in storage modulus was seen for 2% CNT-epoxy system. Tensile results showed that the strength and modulus have improved for 1% CNT-epoxy system. This study also revealed that for all the three systems, failure strain was maximum near the glass transition temperature (Tg) and significantly reduced above Tg. Also the CNT-modified epoxies showed improved toughness.

Item Type: Article
Additional Information: Copyright to this article belongs to M/s. Materials Research Society
Uncontrolled Keywords: Carbon nanotube;Epoxy nanocomposites;Static tensile
Subjects: CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Ms. Alphones Mary
Date Deposited: 11 Sep 2014 04:34
Last Modified: 24 Sep 2015 06:11
URI: http://nal-ir.nal.res.in/id/eprint/12005

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