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Lifetime prediction of the epoxy system DGEBA ( n = 0)/1,2‐DCH modified with an epoxy reactive diluent by thermogravimetric analysis
Author(s) -
Núñez Lisardo,
Villanueva M.,
Núñez M. R.,
Rial B.
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.12536
Subject(s) - thermogravimetric analysis , diglycidyl ether , epoxy , diluent , bisphenol a , cyclohexane , materials science , polymer chemistry , chemistry , chemical engineering , composite material , nuclear chemistry , organic chemistry , engineering
Thermogravimetric analysis was used to predict the lifetime of two three‐component systems of diglycidyl ether of bisphenol A ( n = 0)/1,2‐diamine cyclohexane [DGEBA ( n = 0)/1,2‐DCH] modified with different concentrations of an epoxy reactive diluent, vinylcyclohexene dioxide (VCHD). Experimental results were treated using two methods. The first method was independent of the degradation mechanism, and the second was based on the thermodegradation kinetic mechanism. The activation energies of the reaction were determined using the Flynn–Wall–Ozawa method. These values were compared with those obtained using Kissinger's method. From experimental results it was found that the optimum temperature of service for these materials were different, so one or the other must be selected, depending on the application temperature considered. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 3835–3839, 2003