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Accurate Cure Modeling for Isothermal Processing of Fast Curing Epoxy Resins

Bernath, Alexander 1; Kärger, Luise 1; Henning, Frank 1
1 Institut für Fahrzeugsystemtechnik (FAST), Karlsruher Institut für Technologie (KIT)

Abstract:

In this work a holistic approach for the characterization and mathematical modeling of the reaction kinetics of a fast epoxy resin is shown. Major composite manufacturing processes like resin transfer molding involve isothermal curing at temperatures far below the ultimate glass transition temperature. Hence, premature vitrification occurs during curing and consequently has to be taken into account by the kinetic model. In order to show the benefit of using a complex kinetic model, the Kamal-Malkin kinetic model is compared to the Grindling kinetic model in terms of prediction quality for isothermal processing. From the selected models, only the Grindling kinetic is capable of taking into account vitrification. Non-isothermal, isothermal and combined differential scanning calorimetry (DSC) measurements are conducted and processed for subsequent use for model parametrization. In order to demonstrate which DSC measurements are vital for proper cure modeling, both models are fitted to varying sets of measurements. Special attention is given to the evaluation of isothermal DSC measurements which are subject to deviations arising from unrecorded cross-linking prior to the beginning of the measurement as well as from physical aging effects. ... mehr


Volltext §
DOI: 10.5445/IR/1000062165
Originalveröffentlichung
DOI: 10.3390/polym8110390
Scopus
Zitationen: 47
Web of Science
Zitationen: 38
Dimensions
Zitationen: 47
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Fahrzeugsystemtechnik (FAST)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2016
Sprache Englisch
Identifikator ISSN: 2073-4360
urn:nbn:de:swb:90-621659
KITopen-ID: 1000062165
Erschienen in Polymers
Verlag MDPI
Band 8
Heft 11
Seiten 390
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter reaction kinetics modeling; differential scanning calorimetry; fast curing resin; epoxy resin; resin transfer molding
Nachgewiesen in Dimensions
Scopus
Web of Science
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