Fracture toughness and toughening mechanisms of unsaturated polyester-based clay nanocomposites
Paper
Paper/Presentation Title | Fracture toughness and toughening mechanisms of unsaturated polyester-based clay nanocomposites |
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Presentation Type | Paper |
Authors | Albdiry, Mushtaq T. (Author), Yousif, Belal F. (Author) and Ku, Harry (Author) |
Journal or Proceedings Title | Proceedings of the 13th International Conference on Fracture (ICF 2013) |
ERA Conference ID | 43598 |
Journal Citation | 5, pp. 3446-3455 |
Number of Pages | 10 |
Year | 2013 |
Place of Publication | Anhui, China |
Web Address (URL) of Paper | http://www.icf13.org/ |
Conference/Event | 13th International Conference on Fracture (ICF 2013) |
International Congress on Fracture | |
Event Details | International Congress on Fracture Rank A A A A A A A |
Event Details | 13th International Conference on Fracture (ICF 2013) Event Date 16 to end of 21 Jun 2013 Event Location Beijing, China |
Abstract | In this study, the role of nanoclay particles (MMT) on micro- and nano-scale deformation and fracture behaviour of a crosslinked unsaturated polyester (UPE)-based nanocomposites is explored. Nanocomposites from well-dispersed MMT particles and the UPE resin were prepared by a combination of mechanical mixing and ultrasonication process. The morphological characteristics of nanocomposites were examined by TEM. Critical stress intensity factor (KIc) based on linear elastic fracture mechanics (LEFM) and compact tension (CT) configuration is evaluated. The fracture modes and toughening mechanisms of the fractured-surfaces were identified by SEM analysis. An intercalation/partially exfoliation structure of UPE/MMT nanocomposite with moderate enhancement in fracture toughness is observed. The addition of 3 wt.% MMT exhibits the highest KIc value of nanocomposite by a 61% improvement over the neat UPE. The fracture surface of the neat UPE seems to be a highly brittle fracture without crazing and a coarser surface with the appearance of plastic deformation zones of the nanocomposites. |
Keywords | fracture toughness; toughening mechanisms; unsaturated polyester; clay nanocomposites |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
401807. Nanomaterials | |
401707. Solid mechanics | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Centre of Excellence in Engineered Fibre Composites |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q238w/fracture-toughness-and-toughening-mechanisms-of-unsaturated-polyester-based-clay-nanocomposites
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