Cure kinetics of a diglycidyl ether of bisphenol a epoxy network (n= 0) with isophorone diamine
| Autor: | Marcos Penas, F. Fraga, José Martínez-Ageitos, Eugenio Rodríguez-Núñez, Carlos Emilio Reigosa Castro |
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| Rok vydání: | 2007 |
| Předmět: |
Diglycidyl ether
Polymers and Plastics Enthalpy General Chemistry Epoxy Surfaces Coatings and Films Gibbs free energy Reaction rate chemistry.chemical_compound symbols.namesake Differential scanning calorimetry chemistry visual_art Diamine Polymer chemistry Materials Chemistry symbols visual_art.visual_art_medium Physical chemistry Isophorone |
| Zdroj: | Journal of Applied Polymer Science. 106:4169-4173 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.26989 |
| Popis: | 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 |
| Databáze: | OpenAIRE |
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