Study of Electret State in Epoxyamine Polymers by Dielectric Spectroscopy

Abstract

© 2019, The Minerals, Metals & Materials Society. Electret and dielectric properties of polymer materials based on epoxy oligomer and polyamine amide were studied by dielectric spectroscopy. The orientation of the macromolecules polar groups in the electret state was shown to be fixed by a three-dimensional network, these groups acting as the charge. The electret state of the polymer matrix is a free state of epoxyamine macromolecules. Increased values of the thermoelectret hardness and tensile strength in comparison with those of non-polarized materials of the same composition proved the orientation of epoxy polymer segments.