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Cure kinetics of a diglycidyl ether of bisphenol a epoxy network (n = 0) with isophorone diamine

✍ Scribed by Francisco Fraga; Marcos Penas; Carlos Castro; Eugenio Rodríguez-Núñez; José Manuel Martínez-Ageitos

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
227 KB
Volume
106
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

The study of the cure reaction of a diglycidyl ether of bisphenol A epoxy network with isophorone diamine is interesting for evaluating the industrial behavior of this material. The total enthalpy of reaction, the glass‐transition temperature, and the partial enthalpies at different curing temperatures have been determined with differential scanning calorimetry in dynamic and isothermal modes. With these experimental data, the degree of conversion and the reaction rate have been obtained. A kinetic model introduces the mechanisms occurring during an epoxy chemical cure reaction. A modification of the kinetic model accounting for the influence of the diffusion of the reactive groups at high conversions is used. A thermodynamic study has allowed the calculation of the enthalpy, entropy, and Gibbs free energy. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007

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