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<p>This study investigates the potential of pure polyurethane (PU) foam as a lightweight, cost-effective shielding material against ionizing radiation, emphasizing its adaptability for incorporating high-performance fillers. PU foam was doped with various materials, including NiO, ZnO, Cr<sub>2</sub>O<sub>3</sub>, MnO<sub>2</sub>, BaO(Fe<sub>2</sub>O<sub>3</sub>)<sub>6</sub>, and sludge (at 44.5 wt.% loading), to enhance its shielding properties. The synthesized composites were characterized using Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), and X-ray Fluorescence (XRF). Radiation shielding performance was evaluated through Monte Carlo simulations (MCNP) and Phy-X software for γ-rays (0.015–15&#xa0;MeV) and fast neutron attenuation&#xa0;(up to 11 MeV). Results showed that incorporating high-density, high-atomic-number fillers significantly improved γ-ray attenuation, with BaO(Fe<sub>2</sub>O<sub>3</sub>)<sub>6</sub> demonstrating the highest linear attenuation coefficient. Conversely, pure PU foam effectively attenuated fast neutrons due to its high concentration of light elements. The findings highlight PU-based composites as promising materials for γ-ray and neutron shielding, particularly in X-ray protection and radiological safety applications.</p>

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Polyurethane-based foam composites: synthesis, structural characteristics, and radiation shielding properties

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月10日

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  • Hussein Oraby,
  • Ghada E. Hegazy,
  • Soliman M. ElTalawy,
  • Islam M. Nabil

摘要

This study investigates the potential of pure polyurethane (PU) foam as a lightweight, cost-effective shielding material against ionizing radiation, emphasizing its adaptability for incorporating high-performance fillers. PU foam was doped with various materials, including NiO, ZnO, Cr2O3, MnO2, BaO(Fe2O3)6, and sludge (at 44.5 wt.% loading), to enhance its shielding properties. The synthesized composites were characterized using Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), and X-ray Fluorescence (XRF). Radiation shielding performance was evaluated through Monte Carlo simulations (MCNP) and Phy-X software for γ-rays (0.015–15 MeV) and fast neutron attenuation (up to 11 MeV). Results showed that incorporating high-density, high-atomic-number fillers significantly improved γ-ray attenuation, with BaO(Fe2O3)6 demonstrating the highest linear attenuation coefficient. Conversely, pure PU foam effectively attenuated fast neutrons due to its high concentration of light elements. The findings highlight PU-based composites as promising materials for γ-ray and neutron shielding, particularly in X-ray protection and radiological safety applications.