Flexible Low-Melting Point Radiation Shielding Materials: Soft Elastomers with GaInSnPbBi High-Entropy Alloy Inclusions |
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| Authors: | Kaizhao Wang Jin Hu Tianyou Chen Weijun Zhang Hongtao Fan Yongjin Feng Ziqiang Zhao Kaijun Wang |
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| Affiliation: | 1. College of Materials Science and Engineering, Kunming University of Science and Technology, 121 Street, Wenchang Road 68, Kunming, 650093 China;2. The first people's Hospital of Yunnan province, Jinbi Road 157, Kunming, 650000 China;3. Southwestern Institute of Physics, Huangjing Road 5, Chendu, 610041 China |
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| Abstract: | A polydimethylsiloxane (PDMS) matrix soft elastic composite material with low-melting-point GaInSnPbBi high-entropy alloy (LHEA) inclusions is prepared to evaluate its radiation shielding performance. The LHEA is composed of two different three-component eutectic microstructures, which are grown in a mixed manner to form a complex eutectic structure. The inclusions have excellent mechanical properties that matched the deformation of the PDMS matrix. To evaluate the interaction of the shielding material with photons, the Monte Carlo N-Particle Extended and XCOM codes are used to determine the shielding parameters of the LHEA/PDMS composites, such as mass attenuation coefficient, linear attenuation coefficient, half-value layer, tenth value layer, mean free path, and effective atomic number. The composite with 50-vol% LHEA has the best radiation shielding properties, validated by medical X-ray imaging experiments. The excellent shielding properties of the flexible lightweight composites are attributed to the higher mass attenuation coefficient of the LHEA inclusions than that of lead. |
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| Keywords: | GaInSnPbBi low-melting-point high-entropy alloys Monte Carlo N-particle extended polymer composites radiation shielding soft elastomers |
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