Detailed analysis of gamma-shielding characteristics of poly methyl methacrylate reinforced with micro/nano zirconium oxide and tungsten carbide

IF 1.6 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-09-01 DOI:10.1007/s10967-025-10369-8

Samy A. Dwidar, Wageeh Ramadan, Mohamed Soliman, A. M. Abdelmonem

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Abstract

This research analyzes polymeric composites based on polymethyl methacrylate loaded with micro/nano particles of zirconium oxide (ZrO₂) and tungsten carbide (WC) for gamma-ray protection. The PMMA matrix was reinforced with 15%, 30%, and 45% ZrO₂ and 20%, 40%, and 60% WC. An assessment employed ¹³⁷Cs, ⁶⁰Co, and ¹⁵²Eu point gamma sources using a NaI(Tl) detector. Key parameters—including the linear attenuation coefficient (LAC), half value layer (HVL), effective atomic number (Z_eff), specific gamma constant (GC), gamma dose rate (Dr)were analyzed across a wide energy range (0.015–15 MeV). Additionally, the relative KERMA (K_air) in air was calculated using PAGEX software over a broad energy range varied from 0.0015 to 20 MeV. Measured LAC values reasonable agreement with that calculated by Phy-X/PSD software. Notably, the composite with 60 wt% nano WC provided the most effective gamma-ray attenuation, outperforming ZrO₂ at similar loadings.

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微纳米氧化锆和碳化钨增强聚甲基丙烯酸甲酯的γ屏蔽特性分析

本研究分析了以聚甲基丙烯酸甲酯为基础，负载氧化锆（ZrO2）和碳化钨（WC）微纳米颗粒的聚合物复合材料的伽马射线防护性能。PMMA基体分别添加15%、30%和45%的ZrO2和20%、40%和60%的WC。评估使用了137Cs， 60Co和152Eu点伽玛源，使用NaI（Tl）探测器。主要参数包括线性衰减系数（LAC）、半值层（HVL）、有效原子序数（Zeff）、比伽马常数（GC）、伽马剂量率（Dr）在0.015-15 MeV的宽能量范围内进行了分析。此外，在0.0015至20 MeV的较宽能量范围内，使用PAGEX软件计算空气中的相对KERMA （Kair）。实测LAC值与Phy-X/PSD软件计算值吻合较好。值得注意的是，含有60 wt%纳米WC的复合材料提供了最有效的伽马射线衰减，在类似负载下优于ZrO2。

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.