Impact fracture behaviour of silane-treated halloysite nanotubes-reinforced unsaturated polyester

Albdiry, M. T. and Ku, H. and Yousif, B. F. (2013) Impact fracture behaviour of silane-treated halloysite nanotubes-reinforced unsaturated polyester. Engineering Failure Analysis, 35. pp. 718-725. ISSN 1350-6307

Abstract

This work investigates the effects of untreated and silane-treated halloysite nanotube (HNT) particles on the micromechanism of plastic deformation of unsaturated polyester (UP) nanocomposites under impact loading conditions. The impact fracture properties of the prepared materials were characterised based on the temperature range of -20 to +60 °C using falling weight impact tester. The chemically-modified halloysite with silane coupling agent (s-HNT) showed less hydrophilic towards the polyester matrix, thereby a good interfacial adhesion and uniform structures of HNT in the matrix are obtained compared to the untreated. The incorporation of both unmodified and modified HNT particles up to 5 wt.% into the UP revealed a modest increase in the impact strength and total energy of nanocomposites, since the well dispersed particles in the matrix hindered the crack propagation under the impact loading. SEM examinations revealed that the fracture mode on UP surface was a smooth fast brittle while, the nanocomposite surfaces showed a sign of plastic deformation.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Crown Copyright © 2013. Published online 17 Jul 2013. Published Version restricted in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 16 Aug 2013 02:13
Last Modified: 04 Nov 2014 02:54
Uncontrolled Keywords: halloysite nanotubes; impact property; plastic deformation; polyester
Fields of Research : 02 Physical Sciences > 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics > 020203 Particle Physics
10 Technology > 1007 Nanotechnology > 100708 Nanomaterials
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1016/j.engfailanal.2013.06.027
URI: http://eprints.usq.edu.au/id/eprint/23921

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