乌莱克石/HDPE-Bi2O3/HDPE分层复合材料用于中子和玛辐射屏蔽
Ümit Alver1, Selcen Uzun Duran2, M Bilge Demirköz3
1Karadeniz Technical University, Metallurgical and Materials Engineering, Trabzon, Turkey.
概括
用于辐射屏蔽的高密度聚乙烯 (HDPE) 复合材料,填充了乌莱克西特和氧化物 (Bi2O3). 乌莱西特/HDPE复合材料有效屏蔽中子,而Bi2O3/HDPE复合材料在阻玛射线方面表现出色.
科学领域:
- 材料科学 材料科学 材料科学
- 核工程 核工程是指核工程.
- 聚合物科学 聚合物科学
背景情况:
- 辐射屏蔽对于核应用和核安全至关重要.
- 开发有效的复合材料来屏蔽中子和玛射线是一个持续的挑战.
- 高密度聚乙烯 (HDPE) 为辐射屏蔽填充剂提供轻质矩阵.
研究的目的:
- 为了制造和表征HDPE复合材料,填充了ulexite和 bismuth氧化物 (Bi2O3),用于组合中子和玛射线屏蔽.
- 评估ulexite和Bi2O3对HDPE复合材料的热,机械和屏蔽性能的影响.
- 调查分层结构在减弱不同类型辐射方面的有效性.
主要方法:
- 使用融挤出制造乌莱克石/HDPE和Bi2O3/HDPE复合材料.
- 使用扫描电子显微镜 (SEM),X射线衍射 (XRD) 和热重力测量分析 (TGA) 的表征.
- 评估机械性能 (抗拉强度,硬度).
- 使用中子 (239Pu-Be) 和玛射线 (137Cs) 源测量辐射屏蔽性能.
主要成果:
- 石和Bi2O3的添加并没有显著改变HDPE复合材料的热或机械性能.
- 填充乌莱克赛特的HDPE复合材料显示了增强的中子屏蔽能力.
- 填充Bi2O3的HDPE复合材料在屏蔽玛射线方面表现良好.
- 分层复合结构在减弱中子和二次马辐射方面都有效.
结论:
- 包含ulexit和Bi2O3的HDPE复合材料是双重用途辐射屏蔽的有希望的材料.
- 乌莱西特是有效的中子衰减,而Bi2O3适用于马射线屏蔽.
- 开发的复合材料为潜在的应用提供了屏蔽效率和材料完整性的平衡.
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