Dielectric and hygrothermal studies in rubber modified epoxy resins

We report in this work the results of dielectric studies by means of thermally stimulated depolarization currents (TSDC) techniques and the results of hygrothermal studies on a series of rubber-modified epoxy resins, based on reaction of the diclycidyl ether of bisphenol A (DGEBA) with diaminodiphenyl methane (DDM). The rubber modifier used was a carboxyl terminated butadiene-acrylonitrile (CTBN) reactive oligomer.