The present study has reported the radiation shielding properties of polymeric composites adding tin oxide (SnO2) as a filler. For the purpose of assessing gamma-ray and neutron attenuation properties of the new unsaturated polyester resin composites with different SnO2 concentrations, samples were synthesized with successively increasing loadings of SnO2. Theoretical, simulated, and experimental evaluations have shown a great match among experimental, computational, and simulation over a wide photon energy range (122 keV–1330 keV) using NaI (Tl) scintillation detectors, WinXCom computational code, and Monte Carlo (GEANT4) simulations. Fast neutron removal cross-sections (ΣR), shielding properties against fast neutrons, were calculated. XRD, FE-SEM, and EDX structural grades were conducted to analyze microstructure of the composite and justify the dispersal of SnO2 in that matrix. The composite code-named S5 with SnO2 concentrations at 50% has the highest gamma and neutron shielding ability among all samples. Additionally, the compressive strength tests demonstrated the possibility of incorporating SnO2 in enhancing mechanical properties by improving structures while ensuring a reasonably good protection against radiation.

中文翻译：

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SnO2增强不饱和聚酯复合材料对γ和中子衰减的辐射屏蔽效能


本研究报道了添加氧化锡 （SnO2） 作为填料的聚合物复合材料的辐射屏蔽性能。为了评估不同 SnO2 浓度的新型不饱和聚酯树脂复合材料的伽马射线和中子衰减性能，合成了 SnO2 负载量连续增加的样品。理论、模拟和实验评估表明，使用 NaI （Tl） 闪烁探测器、WinXCom 计算代码和蒙特卡洛 （GEANT4） 模拟，在宽光子能量范围 （122 keV–1330 keV） 上，实验、计算和模拟之间非常匹配。计算了快速中子去除截面 （ΣR），即对快中子的屏蔽性能。进行 XRD、FE-SEM 和 EDX 结构等级分析复合材料的微观结构并证明 SnO2 在该基质中的分散是合理的。代号为 S5 的复合样品，SnO2 浓度为 50%，在所有样品中具有最高的 γ 和中子屏蔽能力。此外，抗压强度测试表明，通过改进结构来增强机械性能的可能性是 SnO2，同时确保相当好的抗辐射保护。