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Journal of Materials Science

, Volume 46, Issue 3, pp 787–796 | Cite as

A cure kinetics, diffusion controlled and temperature dependent, identification of the Araldite LY556 epoxy

  • N. RabearisonEmail author
  • Ch. Jochum
  • J. C. Grandidier
Article

Abstract

The curing of the LY556 epoxy system, a DGEBA-type epoxy resin with an anhydride hardener HY917 and a l-methyl imidazole DY 070 accelerator, mass ratio 100:90:2, was investigated by isothermal and nonisothermal differential scanning calorimetry (DSC). Dynamic measurements were used to evaluate the total, ultimate, heat of the epoxy resin thermosetting reaction and enable experimental conversion determination for isothermal curing. Aiming further finite element modelling of the curing, this article especially focuses on a complete, temperature dependent, cure kinetics parameters identification strategy with the Kamal and Sourour phenomenological model expanded by a diffusion factor. A special attention was given for diffusion description which allows the identification of a fixed order of reaction for the LY556 epoxy resin. Based on isothermal conversion data analysis, the methodology for cure kinetics parameters identification is presented. This led to a temperature dependent identification of all cure kinetics parameters of the LY556 epoxy blend, including diffusion control description and corresponding temperature dependency. Cure kinetics identification quality and importance of diffusion control phenomenon for the curing of the epoxy are then highlighted by computed conversion results that fit almost well the data in the range of temperature used for identification.

Keywords

Differential Scanning Calorimetry Differential Scanning Calorimetry Data Cure Kinetic Cure Kinetics Differential Scanning Calorimetry Scan 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

This study was funded by the Brest Metropole Oceanne council of the city of Brest in Brittany and the Social European Funding (FSE). The material support of the ENSIETA graduate school of engineering and of the IFREMER Institute in Brittany is gratefully acknowledged.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Ensieta/Mechanics of Naval and Offshore Structures Research Centre/Lbms (EA 4325)Brest Cedex 9France
  2. 2.EnsmaFuturoscope Chasseneuil CedexFrance

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