Mohamed Elsafi, Ali M. Hedaya, Esraa H. Abdel-Gawad, M. Rashad, M. I. Sayyed, Ibrahim H. Saleh
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引用次数: 0
Abstract
In this work, tungsten oxide (WO3) particles (in micro and nanoscales) have been mixed with silicon epoxy resin to create a novel composite to enhance the radiation attenuation properties of an epoxy resin shield. Six epoxy resin samples were created using various WO3 micro/nanoparticles concentrations. Several radioactive sources with varying energies were employed along with a high-purity germanium detector to evaluate the prepared samples' shielding capabilities. The linear attenuation coefficients (LACs) were measured experimentally using the narrow beam method. Based on the experimentally obtained values of LACs, other radiation shielding parameters, including half value length (HVL), tenth value layer (TVL), radiation shielding efficiency (RSE), and mean free path (MFP), were computed. The EW-20m30n sample (50% epoxy + 20% micro WO3 + 30% nano WO3) had the lowest MFP, HVL, and TVL at any given energy. Thus, in terms of material thickness, the EW-20m30n sample offers the best shielding characteristics. Furthermore, because of its superior density, the almost even mixture of nanoparticles and microparticles in the EW-20m30n sample produces a RSE of ≅ 100% in the low energy zone. Conversely, it was found that the samples' ability to protect decreased as the energy increased. Calculating HVL, TVL, and MFP revealed a high energy dependence that grew as the incident photon energy rose. On the other hand, for 50% micro WO3 and 50% epoxy, the EW-50m sample had the least ideal shielding characteristics. Categorically, our study has demonstrated that adding WO3 micro/nanoparticles to epoxy resin polymer has improved the polymer's radiation shielding properties.
期刊介绍：
The journal Silicon is intended to serve all those involved in studying the role of silicon as an enabling element in materials science. There are no restrictions on disciplinary boundaries provided the focus is on silicon-based materials or adds significantly to the understanding of such materials. Accordingly, such contributions are welcome in the areas of inorganic and organic chemistry, physics, biology, engineering, nanoscience, environmental science, electronics and optoelectronics, and modeling and theory. Relevant silicon-based materials include, but are not limited to, semiconductors, polymers, composites, ceramics, glasses, coatings, resins, composites, small molecules, and thin films.
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