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Epoxy nanocomposites with aligned carbon nanofillers by external electric fields

Wang, Chun H., Ladani, Raj B., Wu, Shuying, Zhang, Jin, Kinloch, Anthony J., Ghorbani, Kamran and Mouritz, Adrian P. 2015, Epoxy nanocomposites with aligned carbon nanofillers by external electric fields, in ICCM20 2015 : Proceedings of the 20th International Conference on Composite Materials, [The Conference], [Copenhagen, Denmark], pp. 1-8.

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Title Epoxy nanocomposites with aligned carbon nanofillers by external electric fields
Author(s) Wang, Chun H.
Ladani, Raj B.
Wu, Shuying
Zhang, Jin
Kinloch, Anthony J.
Ghorbani, Kamran
Mouritz, Adrian P.
Conference name Composite Materials. Conference (2015 : 20th : Copenhagen, Denmark)
Conference location Copenhagen, Denmark
Conference dates 19-24 Jul. 2015
Title of proceedings ICCM20 2015 : Proceedings of the 20th International Conference on Composite Materials
Publication date 2015
Start page 1
End page 8
Total pages 8
Publisher [The Conference]
Place of publication [Copenhagen, Denmark]
Keyword(s) carbon nanofibre
graphene nanosheet
electric field
fracture toughness
alignment
Summary This paper presents systematic studies on aligning carbon nanofillers in epoxy by external fields, either electric fields or magnetic fields, to create nanocomposites with greatly improved mechanical and electrical properties. Carbon nanofibers (CNFs) and graphene nanoplatelets (GnPs) were observed to align along the field direction in the epoxy resin. Compared to the unmodifed epoxy and those with randomly-oriented carbon nanofillers, the nanocomposites with aligned carbon nanofillers showed significantly higher fracture toughness and electrical conductivity along the direction of the external field. Compared with randomly-oriented nanofillers, aligned GnPs and CNFs produced 40% and 27% improvement in fracture energy at 1.0 wt%, bringing the total increase in fracture energy over the neat polymer to more than 10 times. Several key toughening mechanisms were identified through fractographic analysis, which was used to develop predictive models to quantify the increases in the value of GIc as a result of 1-D and 2D carbon nanofillers. The present findings suggest that aligning carbon nanofillers presents a very promising technique to create multi-scale reinforcement with greatly increased electric conductivity and fracture toughness.
Language eng
Field of Research 091202 Composite and Hybrid Materials
Socio Economic Objective 861301 Aerospace Equipment
HERDC Research category E2 Full written paper - non-refereed / Abstract reviewed
ERA Research output type E Conference publication
Copyright notice ©2015, The Conference
Persistent URL http://hdl.handle.net/10536/DRO/DU:30083242

Document type: Conference Paper
Collection: Institute for Frontier Materials
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