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

Polymers

Mickaël Pomes-Hadda²  Maëlenn Aufray²  Sombel Diaham¹ 

[1] Laboratoire Plasma et Conversion d’Énergie (LAPLACE), Université de Toulouse, 118 route de Narbonne, 31062 Toulouse Cedex 9, France; E-Mail:;Centre Interuniversitaire de Recherche et d’Ingénierie des Matériaux (CIRIMAT), Université de Toulouse, 4 Allée Emile Monso, BP 44362, 31030 Toulouse Cedex 4, France; E-Mail:

关键词: epoxy-amine;    dielectric spectroscopy;    modelisation;    β-relaxation;    data processing interphase;   

DOI  :  10.3390/polym7040644

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.