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Polymers 2015, 7(4), 644-654; doi:10.3390/polym7040644

Interval Analysis: A New Tool for the Characterization of an Epoxy-Amine/Aluminum System

1
Centre Interuniversitaire de Recherche et d'Ingénierie des Matériaux (CIRIMAT), Université de Toulouse, 4 Allée Emile Monso, BP 44362, 31030 Toulouse Cedex 4, France
2
Laboratoire Plasma et Conversion d'Énergie (LAPLACE), Université de Toulouse, 118 route de Narbonne, 31062 Toulouse Cedex 9, France
*
Author to whom correspondence should be addressed.
Academic Editor: Wei Min Huang
Received: 10 February 2015 / Revised: 23 March 2015 / Accepted: 30 March 2015 / Published: 3 April 2015
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Abstract

Epoxy-amine/aluminum chemical systems or sandwich structures with and without interphase formation are prepared using two different curing cycles and are characterized with dielectric spectroscopy. The sample without interphase formation is obtained when the reaction between epoxy and amine groups is favored, which occurs at high temperature. The interphase formation results from the reaction between the amine group and aluminum surface at room temperature. Dielectric spectra are fitted using the Set Inversion Via Interval Analysis (SIVIA) algorithm applied to DiElectric spectroscopy algorithm (SADE) developed using the method of intervals analysis. A new approach is implemented using a sum of Debye relaxations to optimize and guarantee the fitting. The results achieved show a distribution of relaxation times, which always take place at the same time as demonstrated. In this study, five Debye relaxations were found which fit the β-relaxation with our model. Finally, we showed that the more intensive of our five β -relaxations follows the Arrhenius law. View Full-Text
Keywords: epoxy-amine; dielectric spectroscopy; modelisation; β-relaxation; data processing interphase epoxy-amine; dielectric spectroscopy; modelisation; β-relaxation; data processing interphase
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Pomes-Hadda, M.; Aufray, M.; Diaham, S. Interval Analysis: A New Tool for the Characterization of an Epoxy-Amine/Aluminum System. Polymers 2015, 7, 644-654.

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