Vitrification effect on the curing reaction of epoxy resin

Abstract

The curing reaction of diglycidyl ethef of Bisphenol A(DGEBA) with triethylene tetramine(TETA) was studied by the differential scanning calorimetry(DSC) . The reaction was affected as the vitification occurred when the glass transition temperature(Tg) of the reaction mixture exceeded the curing temperature. In order to describe the curing reaction in 1.4e rubbery state as well as in the glassy state, the reaction kinetic equation contain the generalized WLF equation term was proposed and the parameters were determined from the BSC data.