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Investigation of the gamma ray shielding properties for polyvinyl chloride reinforced with chalcocite and hematite minerals

机译：球晶石和赤铁矿矿物增强聚氯乙烯的γ射线屏蔽性能研究

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摘要

Polyvinyl chloride (PVC) is the most widely produced synthetic plastic polymer in the world: it has a variety of applications due to its low cost, elasticity, light weight, good mechanical characteristics and corrosion resistance. In order to protect living beings from harmful radiation such as gamma rays, novel low-cost chalcocite and hematite-based PVCs were fabricated for shielding purposes. The mass attenuation coefficient μ for various fabricated hematite and chalcocite-based PVCs was calculated using MCNP-5 code. The results were compared with the values calculated theoretically using XCOM software between 0.015 and 15 MeV. Moreover, the simulated μ parameter for chalcocite/PVC and hematite/PVC was used to calculate other shielding factors, such as the half value layer (HVL), the mean free path (MFP) effective atomic number Z , the geometric-progress (G-P) fitting parameters and the exposure buildup factor (EBF). The simulated data of μ for all composites is comparable to that obtained from a theoretical calculation. The results showed that the addition of hematite and chalcocite enhance the μ of PVC polymers. We also found that the μ of chalcocite/PVC is higher than that of hematite/PVC due to the copper content in the former.
机译：聚氯乙烯（PVC）是世界上生产最广泛的合成塑料聚合物：由于其成本低，弹性，重量轻，良好的机械特性和耐腐蚀性而具有多种应用。为了保护生物免受诸如伽玛射线等有害辐射的伤害，制造了新型低成本的辉绿岩和赤铁矿基聚氯乙烯用于屏蔽。使用MCNP-5代码计算出各种人造赤铁矿和辉绿岩基PVC的质量衰减系数μ。将结果与使用XCOM软件理论计算的值在0.015和15 MeV之间进行比较。此外，用球墨石/ PVC和赤铁矿/ PVC的模拟μ参数来计算其他屏蔽因子，例如半值层（HVL），平均自由程（MFP）有效原子序数Z，几何级数（GP） ）拟合参数和曝光累积因子（EBF）。所有复合材料的μ的模拟数据都可以与理论计算得出的结果进行比较。结果表明，赤铁矿和辉绿岩的加入提高了PVC聚合物的μ。我们还发现，由于前者中的铜含量，辉绿岩/ PVC的μ值高于赤铁矿/ PVC的μ。

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