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Effect of silica nanoparticles on compressive properties of an epoxy polymer

Jumahat, A., Soutis, C., Jones, R.F. and Hodzic, A. (2010) Effect of silica nanoparticles on compressive properties of an epoxy polymer. Journal of Materials Science, 45 (21). pp. 5973-5983. ISSN 0022-2461

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Abstract

The effect of nanosilica on compressive properties of an Epikote 828 epoxy at room temperature was studied. A 40 wt% nanosilica/epoxy masterbatch (nanopox F400) was used to prepare a series of epoxy based nanocomposites with 5-25 wt% nanosilica content. Static uniaxial compression tests were conducted on cubic and cylindrical specimens to study the compressive stress-strain response, failure mechanisms and damage characteristics of the pure and nanomodified epoxy. It was found that the compressive stiffness and strength were improved with increasing nanosilica content without significant reduction in failure strain. The presence of nanosilica improved ductility and promoted higher plastic hardening behaviour after yielding in comparison with the unmodified resin system. This result suggested that nanoparticles introduced additional mechanisms of energy absorption to enhance the compressive properties without reducing the deformation to failure.

Item Type: Article
Copyright, Publisher and Additional Information: © 2010 Springer. This is an author produced version of a paper subsequently published in Journal of Materials Science. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: Toughening Mechanisms; Fracture-Toughness; Fiber Composites; Reinforcement; Stiffness; Resin
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield) > Aerospace Engineering
The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield)
Depositing User: Miss Anthea Tucker
Date Deposited: 01 Oct 2010 13:12
Last Modified: 08 Feb 2013 17:07
Published Version: http://dx.doi.org/10.1007/s10853-010-4683-1
Status: Published
Publisher: Springer
Refereed: Yes
Identification Number: 10.1007/s10853-010-4683-1
URI: http://eprints.whiterose.ac.uk/id/eprint/11246

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