Chaitali V. More , Nilesh L. Tarwal , Sunil N. Botewad , Mohd Anis , Vishnu V. Kutwade , Ferdi Akman , Osman Agar , Pravina P. Pawar
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引用次数: 0
摘要
本文报道了以氧化锡（SnO2）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γ射线和中子衰减性能，合成了逐渐增加SnO2负荷量的样品。利用NaI （Tl）闪烁探测器、WinXCom计算代码和Monte Carlo （GEANT4）模拟，理论、模拟和实验评估表明，在宽光子能量范围（122 kv - 1330 keV）内，实验、计算和模拟之间存在很大的匹配。计算了快中子去除截面（ΣR），以及对快中子的屏蔽性能。通过XRD、FE-SEM和EDX结构分级分析了复合材料的微观结构，证明了SnO2在基体中的分散。在所有样品中，SnO2浓度为50%的S5复合材料屏蔽γ和中子的能力最高。此外，抗压强度测试表明，加入SnO2可以通过改善结构来提高机械性能，同时确保对辐射的良好防护。
Radiation shielding efficacy of unsaturated polyester composites for gamma and neutron attenuation-enhanced with SnO2
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.
期刊介绍：
Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing.
The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.
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