Consistent model predictions for isothermal cure kinetics investigation of high performance epoxy prepregs

Zhang, Jin, Fox, Bronwyn and Guo, Qipeng 2008, Consistent model predictions for isothermal cure kinetics investigation of high performance epoxy prepregs, Journal of applied polymer science, vol. 107, no. 4, pp. 2231-2237.


Title Consistent model predictions for isothermal cure kinetics investigation of high performance epoxy prepregs
Author(s) Zhang, Jin
Fox, Bronwyn
Guo, Qipeng
Journal name Journal of applied polymer science
Volume number 107
Issue number 4
Start page 2231
End page 2237
Publisher John Wiley & Sons
Place of publication Malden, Mass.
Publication date 2008-02-15
ISSN 0021-8995
1097-4628
Keyword(s) composites
diffusion
FTIR
high performance polymers
kinetics
Summary An accurate kinetics model is essential for understanding the curing mechanism and predicting the end properties of polymer materials. Graphite/epoxy AS4/ 8552 prepreg is a recent high-performance thermosetting composite modified with thermoplastic, which is being used in the manufacture of aircraft and military structures. The isothermal cures of this system along with another thermoplastic toughened high-performance prepreg, the T800H/3900-2 system, were investigated by real-time Fourier transform infrared (FTIR) spectroscopy. The cure rate was quantitatively analyzed based on the concentration profiles of both the epoxy and primary amine groups. Three autocatalytic models were used to determine kinetics parameters for both composite systems. The model which utilizes an empirical term, the final relative conversion (at different isothermal curing temperatures), describes the experimental data of both systems more satisfactorily than the model which applies a diffusion factor. The modeling results suggest that the curing of epoxy within both prepregs can be assumed to be a second order process.
Language eng
Field of Research 091202 Composite and Hybrid Materials
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2007, Wiley Periodicals, Inc.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30017198

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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