Curing kinetics and thermal properties of diglycidylether of bisphenol A with various diamines

To prepare a high-performance epoxy, we synthesized three types of diamines {N,N ' -(4,4 ' -diphenylether)-bis (4-aminophthalimide), 4,4 ' -bis(p-amin ophenoxy)dibenzalphentaerythriol, and 2,2 ' -bis[4-(p-aminobenzoyl)phenyl]p ropane} as epoxy curing agents with a two-step reaction sequence. The struc tures of the synthesized diamines were confirmed with Fourier transform inf rared and nuclear magnetic resonance spectroscopy. The curing kinetics and thermal stability of the cured epoxy resin with diglycidylether of bispheno l A were estimated with differential scanning calorimetry and thermogravime tric analysis under a nitrogen atmosphere. The kinetics parameters were det ermined with the Ozawa and Kissinger equations. (C) 2001 John Wiley & Sons, Inc.