Abstract This study presents gamma-shielding characteristics of Li2WO4 doped polyester composites. In the study, unsaturated polyester was chosen as resin, Li2WO4 was chosen as filling material, cobalt octoate 6% (CO-6) and methyl ethyl ketone peroxide (MEKP) were respectively chosen as accelerator and initiators. Four different samples with 5%, 10%, 15% and 20% Li2WO4 were prepared and the prepared samples were tested by using 22Na, 54Mn, 57Co, 60Co, 133Ba, 137Cs, 152Eu and 241Am radioactive point-isotropic sources and one gamma spectrometer system based HPGe detector. The experimental results were obtained with the help of the transmission geometry between 59.5 and 1408.0 keV photon energies. For the validation of the results, the test results were compared with the results obtained by WinXCOM computer program and both results showed good agreement. It was observed that the mass attenuation coefficients lie within the range of 0.3042-0.0558 cm2g-1 for Li2WO4 (5%), 0.4074-0.0556 cm2g-1 for Li2WO4 (10%), 0.5042-0.0555 cm2g-1 for Li2WO4 (15%) and 0.5909-0.0553 cm2g-1 for Li2WO4 (20%) in the energy range of 59.5 to 1408.0 keV. Comparing to the other Li2WO4 (5%, 10%, 15%) contents, Li2WO4 (20%) was found to have the higher radiation shielding property. This shows that the radiation protection performance of unsaturated polyester increases when Li2W04 is added as filler.

中文翻译：

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聚酯/Li2WO4复合材料的辐射衰减特性分析

摘要 本研究介绍了 Li2WO4 掺杂聚酯复合材料的伽马屏蔽特性。研究中选择不饱和聚酯为树脂，选择Li2WO4为填充材料，分别选择6%辛酸钴(CO-6)和过氧化甲乙酮(MEKP)作为促进剂和引发剂。制备了含 5%、10%、15% 和 20% Li2WO4 的四种不同样品，并使用 22Na、54Mn、57Co、60Co、133Ba、137Cs、152Eu 和 241Am 放射性点各向同性源和一台伽马光谱仪测试了制备的样品基于系统的 HPGe 探测器。实验结果是在 59.5 和 1408.0 keV 光子能量之间的透射几何的帮助下获得的。为了验证结果，将测试结果与WinXCOM计算机程序得到的结果进行比较，两者的结果具有良好的一致性。据观察，质量衰减系数在 0.3042-0.0558 cm2g-1 范围内，Li2WO4（5%），0.4074-0.0556 cm2g-1（10%），0.5042-0.0555 cm2g-1（Li2WO4） ) 和 0.5909-0.0553 cm2g-1 对于 Li2WO4 (20%) 在 59.5 到 1408.0 keV 的能量范围内。与其他 Li2WO4（5%、10%、15%）含量相比，发现 Li2WO4（20%）具有更高的辐射屏蔽性能。这表明当Li2W04作为填料加入时，不饱和聚酯的防辐射性能提高。Li2WO4 (20%) 在 59.5 至 1408.0 keV 的能量范围内为 5909-0.0553 cm2g-1。与其他 Li2WO4（5%、10%、15%）含量相比，发现 Li2WO4（20%）具有更高的辐射屏蔽性能。这表明当Li2W04作为填料加入时，不饱和聚酯的防辐射性能提高。Li2WO4 (20%) 在 59.5 至 1408.0 keV 的能量范围内为 5909-0.0553 cm2g-1。与其他 Li2WO4（5%、10%、15%）含量相比，发现 Li2WO4（20%）具有更高的辐射屏蔽性能。这表明当Li2W04作为填料加入时，不饱和聚酯的防辐射性能提高。