TTT ISOTHERMAL CURE DIAGRAM OF A DYGLICIDYL ETHER OF BISPHENOL A 1,3-BISAMINOMETHYLCYCLOHEXANE (DGEBA/1,3-BAC) EPOXY-RESIN SYSTEM/

The isothermal cure of an epoxy-cycloaliphatic amine system has been s tudied following the evolution of both glass transition temperature an d conversion. A functional relationship between T-g and conversion is established. The cure reaction is satisfactorily described by a phenom enological model with parameters determined from DSC experiments. By a pplying the kinetic model, gelation and vitrification curves are calcu lated and compared with experimental times to gelation and times to vi trification determined at temperatures between 50 and 100 degrees C. T he isothermal time-temperature-transformation (TTT) curing diagram inc luding iso-T-g contours has been established. (C) 1996 John Wiley & So ns, Inc.