Influence of the intensity of constant magnetic field on the structure and properties of composites based on epoxy polymers and Fe (III) or Al(III) oxides

Abstract

We study the influence of the intensity of constant external magnetic fields on the structure, thermal properties, and electric conductivity of composites based on ED-20 epoxy resin and one of the metal oxides (Al 2 O 3 or Fe 2 O 3 ). It is shown that, under the action of the magnetic field, the Fe 2 O 3 crystallites in the structure of the composite become finer (L ≈ 18 nm → 5.4 nm) and the densities of the initial epoxy polymer, the composites based on this polymer, and one of the metal oxides (Al 2 O 3 or Fe 2 O 3 ) increase, which, in turn, affects the other properties of these compounds, in particular, their specific heat and conductivity.