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Abstract <p>The results of studies on the effect of gamma radiation on polymer composites based on epoxy resin and bismuth oxide are presented. The surface microstructure and physical and mechanical characteristics were studied, and experimental studies of the effects of gamma quanta on the synthesized composites were carried out. It was found that the filler is evenly distributed over the entire surface of the composite during synthesis. With an increase in the content of bismuth oxide in the material from 0 to 60 wt % in increments of 20 wt %, flexural strength increases by 3.4–36.9%, while the tensile strength decreases slightly (by 15.0, 13.3, and 9.1% for 20, 40, and 60 wt % additives, respectively) compared with the additive-free sample. As a result of the study of the obtained composites for resistance to gamma radiation, it can be concluded that the composite containing 60 wt % bismuth oxide has the best radiation protection characteristics. The values of the linear and mass attenuation coefficients, as well as the half attenuation layer at a gamma-ray energy of 0.662 MeV for this material, were 0.096 cm<sup>–1</sup>, 0.075 cm<sup>2</sup>/g, and 7.220 cm, respectively.</p>

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Radiation-Protective Properties of Polymer Composites with Bismuth Oxide to Gamma Radiation

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • N. I. Cherkashina,
  • V. I. Pavlenko,
  • L. V. Denisova,
  • A. Y. Ruchiy,
  • D. S. Romanyuk,
  • A. V. Noskov,
  • R. A. Barinov

摘要

Abstract

The results of studies on the effect of gamma radiation on polymer composites based on epoxy resin and bismuth oxide are presented. The surface microstructure and physical and mechanical characteristics were studied, and experimental studies of the effects of gamma quanta on the synthesized composites were carried out. It was found that the filler is evenly distributed over the entire surface of the composite during synthesis. With an increase in the content of bismuth oxide in the material from 0 to 60 wt % in increments of 20 wt %, flexural strength increases by 3.4–36.9%, while the tensile strength decreases slightly (by 15.0, 13.3, and 9.1% for 20, 40, and 60 wt % additives, respectively) compared with the additive-free sample. As a result of the study of the obtained composites for resistance to gamma radiation, it can be concluded that the composite containing 60 wt % bismuth oxide has the best radiation protection characteristics. The values of the linear and mass attenuation coefficients, as well as the half attenuation layer at a gamma-ray energy of 0.662 MeV for this material, were 0.096 cm–1, 0.075 cm2/g, and 7.220 cm, respectively.