Albdiry, M. T. and Yousif, B. F. (2019) Toughening of brittle polyester with functionalized halloysite nanocomposites. Composites Part B: Engineering, 160. pp. 94-109. ISSN 1359-8368
Abstract
This study presents the role of pristine halloysite nanotubes (HNT) and silane-functionalized halloysite (s-HNT) on toughening mechanisms and initiating plastic deformation in unsaturated polyester (UPE) nanocomposite. The critical stress intensity factor (KIc) and the critical strain energy release rate (GIc) as fracture toughness indications were measured and the relationship between the morphological structures and toughening mechanisms was identified. The results indicated that the fracture toughness values exhibited a steady-state increasing trend with the incorporation of up to 5 wt % HNT or s-HNT into the UPE resin. The 3% HNT or 3% s-HNT composites were found to obtain the highest toughness values supported with uniformly dispersed particles. The SEM observations showed different energy dissipation mechanisms are; zone shielding and shear yielding with a presence of full particle debonding with the HNT addition; and river line patterns, a tail-like structure and the formation of micro-cracks mechanisms were observed with the addition of s-HNT.
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| Item Type: | Article (Commonwealth Reporting Category C) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Additional Information: | Permanent restricted access to Published version, 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: | 22 Oct 2018 04:16 |
| Last Modified: | 14 Dec 2018 03:07 |
| Uncontrolled Keywords: | halloysite nanotubes; silane; thermoset; nanocomposites; fracture toughness; toughening mechanisms |
| Fields of Research : | 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials |
| Identification Number or DOI: | 10.1016/j.compositesb.2018.10.032 |
| URI: | http://eprints.usq.edu.au/id/eprint/34943 |
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