Double Glass Transition Temperatures of the Curing Process of Tetrabromo - bisphenol - A Epoxy Resin with Diaminodiphenylsulfone

The double glass transition temperatures was observed by means of DSC and TBA techniques during the curing reaction of tetrabromo-bisphenol-A epoxy resin (TBBPAER) with diaminodiphenylsulfone (DDS). According to the microstructure of the reactants, a theoretical explanation to the experimental results was proposed in the paper.