Effect of Gamma Irradiation on the IR Spectra and Mechanical Properties of Composites Derived from Epoxy Resin and Silicon Oxide Nanoparticles

Abstract

Composites derived from epoxy resin modified with silicon oxide nanoparticles were studied by spectral and physical-mechanical methods. The effects of the percentage content of the filler and the dose of γ-radiation on the strength of these composites were analyzed. The best procedure for hardening the composites was established. The optimal physical and mechanical characteristics were achieved at 1 mass% filler content and radiation dose 50 kGy. The basic spectral criteria were established to characterize the change in the physical and chemical structure of the composites by the action of γ-radiation. The appearance of IR bands at 1710–1740 cm^–1 and an increase in the intensity of these bands with increasing radiation dose can serve as spectral criteria for greater destruction of the polymer matrix.