Influence of Temperature on Tensile behavior of MWCNT Modified Epoxy Nanocomposites

Revathi, A and Sandhya, Rao and Kavitha, Rao V and Rajendra Prakash, M and Sendil, Murugan M and Shylaja, Srihari and Dayananda, GN (2014) Influence of Temperature on Tensile behavior of MWCNT Modified Epoxy Nanocomposites. Journal of Materials Reserarch, 29 (15). pp. 1-7. ISSN 0884-2914

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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 (T g) and significantly reduced above T g. Also the CNT-modified epoxies showed improved toughness.

Item Type: Article
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Mrs SK Pratibha
Date Deposited: 06 Aug 2018 08:27
Last Modified: 06 Aug 2018 08:27
URI: http://nal-ir.nal.res.in/id/eprint/12937

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