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

Hussein Oraby1, Ghada E Hegazy2, Soliman M ElTalawy3

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|April 10, 2025
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Polyurethane (PU) foam composites show promise for radiation shielding. Doping PU foam with specific fillers enhances gamma-ray shielding, while pure PU foam effectively attenuates fast neutrons.

Keywords:
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Area of Science:

  • Materials Science
  • Nuclear Engineering
  • Polymer Science

Background:

  • Polyurethane (PU) foam is a lightweight, cost-effective material.
  • Developing effective radiation shielding materials is crucial for safety.
  • PU foam's adaptability for filler incorporation offers potential for enhanced properties.

Purpose of the Study:

  • To investigate pure PU foam and its composites as shielding materials against ionizing radiation.
  • To enhance the radiation shielding capabilities of PU foam by incorporating various fillers.
  • To evaluate the performance of these materials for gamma-ray and fast neutron attenuation.

Main Methods:

  • Synthesized PU foam composites doped with NiO, ZnO, Cr2O3, MnO2, BaO(Fe2O3)6, and sludge.
  • Characterized materials using FT-IR, SEM, and XRF.
  • Evaluated shielding performance via Monte Carlo simulations (MCNP) and Phy-X software for gamma-rays and fast neutrons.

Main Results:

  • High-density, high-atomic-number fillers significantly improved gamma-ray attenuation.
  • BaO(Fe2O3)6 filler exhibited the highest linear attenuation coefficient for gamma-rays.
  • Pure PU foam demonstrated effective fast neutron attenuation due to its light element composition.

Conclusions:

  • PU-based composites are promising for combined gamma-ray and neutron shielding.
  • These materials offer potential applications in X-ray protection and radiological safety.
  • The study validates PU foam's versatility as a radiation shielding matrix.