| 改性纳米钐/铋/乙烯基酯辐射屏蔽复合材料的制备及性能验证 |
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| 引用本文： | 任翼,赵娇,戴学志,晏敏皓.改性纳米钐/铋/乙烯基酯辐射屏蔽复合材料的制备及性能验证[J].科学技术与工程,2023,23(27):11747-11752. |
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| 作者姓名： | 任翼 赵娇 戴学志 晏敏皓 |
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| 作者单位： | 西南科技大学 |
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| 基金项目： | 国家自然科学基金联合(U1932117)；四川省自然科学(2022JDTD0017, 2022NSFSC1228)；西南科技大学博士(21zx7102) |
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| 摘 要： | 面对现代辐射防护提出的轻量化和无铅化要求，聚合物基屏蔽材料愈发受到重视。本文将改性后的纳米氧化钐（nanoSm2O3）和纳米氧化铋（nanoBi2O3）作为屏蔽填料，通过原位聚合法制备了改性纳米钐/铋/乙烯基酯辐射屏蔽复合材料（M-nanoSm2O3/M-nanoBi2O3/vinyl ester, SBV）。采用红外光谱和X射线衍射对改性前后的纳米填料进行了表征，通过热重分析、力学性能测试、断面扫描及伽马射线和热中子屏蔽性能测试研究了填料含量对复合材料性能的影响。结果表明，添加改性纳米填料能够显著增强复合材料的热稳定性能和屏蔽性能，但过量添加会严重破坏复合材料的力学性能。综合考虑，掺杂量为30 wt%时，复合材料综合性能最佳，兼并无铅、低比重和高屏蔽性能的特点，有望成为应用于混合辐射场中的屏蔽材料。
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| 关 键 词： | 氧化钐 氧化铋 环氧乙烯基酯树脂 辐射防护 复合材料 |
| 收稿时间： | 2022/11/16 0:00:00 |
| 修稿时间： | 2023/6/26 0:00:00 |
Preparation and Performance Verification of Modified Nano Samarium / Bismuth / Vinyl Ester Radiation Shielding Composites |
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| Ren Yi,Zhao Jiao,Dai Xuezhi,Yan Minhao.Preparation and Performance Verification of Modified Nano Samarium / Bismuth / Vinyl Ester Radiation Shielding Composites[J].Science Technology and Engineering,2023,23(27):11747-11752. |
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| Authors: | Ren Yi Zhao Jiao Dai Xuezhi Yan Minhao |
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| Affiliation: | Southwest University of Science and Technology |
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| Abstract: | In the face of the requirements of lightweight and lead-free in modern radiation protection, polymer-based shielding materials have been paid more and more attention. Here, the modified nano samarium oxide and nano bismuth oxide were used as shielding fillers to prepare the modified nano samarium/bismuth/vinyl ester radiation shielding composites (SBV) by in-situ polymerization. FT-IR and XRD were used to characterize the nano fillers before and after modification. The influence of the content of fillers on the properties of the composite was studied through TG analysis, mechanical property testing, cross section scanning, and gamma ray and thermal neutron shielding performance testing. The results show that the thermal stability and shielding properties of the composite can be significantly enhanced by adding modified nano fillers. However, excessive addition will seriously damage the mechanical properties of the composite. In general, the composite has the best comprehensive performance when the doping amount is 30 wt%. It combines the characteristics of lead-free, low specific gravity and high shielding performance, and is expected to become a shielding material used in mixed radiation fields. |
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| Keywords: | samarium oxide bismuth oxide epoxy vinyl ester resin radiation protection composites |
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