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Updated: Feb 12, 2026
06:45
Negative Additive Manufacturing of Complex Shaped Boron Carbides
Published on: September 18, 2018
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多功能聚甲基甲酸盐-碳化物/氧化物复合材料用于玛,中子和带电粒子屏蔽应用
A M Abdelmonem1, Mahmoud T Alabsy2
1Reactors Physics Department, Nuclear Research Center, Egyptian Atomic Energy Authority (EAEA), Egypt.
概括
这项研究调查了聚甲基甲酸盐复合材料中氧化物 (Bi2O3) 和碳化物 (B4C) 的辐射屏蔽特性. 该S2复合材料表现出优异的热中子衰减,使其成为辐射保护应用的理想选择.
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:
- 先进的聚合物复合材料对于辐射屏蔽应用至关重要.
- 聚甲基甲酸 (PMMA) 是一种多用途的聚合物矩阵.
- 结合比斯氧化物 (Bi2O3) 和碳化物 (B4C) 等重元素可以增强屏蔽能力.
研究的目的:
- 评估玛射线,中子,电子和离子与含有不同质量%的Bi2O3和B4C的PMMA复合物的相互作用特征.
- 确定这些新型复合材料的辐射减弱特性.
- 为有效的辐射屏蔽确定最佳复合材料组成.
主要方法:
- 合成了含有0-40重量%Bi2O3 (取代B4C) 的PMMA复合材料,并测量了它们的密度.
- 使用HPGe探测器和各种马源进行实验评估马衰减.
- 使用Phy-X/PSD,Py-MLBUF,MRCScal,中子计算器,SRIM和ESTAR NIST软件进行马,中子,离子和电子相互作用的全面分析.
主要成果:
- 随着Bi2O3含量和密度的增加,质量衰减系数 (MAC) 增加,显示实验和XCOM计算值之间的良好一致性 (RD% < 1.0803%).
- 复合S2 (B4C含量最高) 呈现出最高的快速中子去除截面 (FNRCS) 和宏观去除截面 (MRCS).
- 该S2聚合物复合物证明了最有效的热中子衰减.
结论:
- 密度和Bi2O3含量显著影响PMMA复合材料的马衰减特性.
- 开发的PMMA/Bi2O3/B4C复合材料在辐射屏蔽应用中显示出有前途的潜力.
- 确定S2复合物成分是最有效的热中子衰减.
关键词:
B (((4)C4) C4) C4) C4) C4) C4) C4) C4) C4) C) C) C) C) C) C) C) D) C) C) D) C) C) D) C) D) C) D) C) D) C) D) C) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) D) E) D) E) D) E) D) E) F) D) E) D) E) D) E) D) E) D) E) D) E) F) D) E) D) E) E) D) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) E) È) E) E) E) E) E) E) È) È) È) È) È È) È È È È È È È È È È È È È È È È È È È È È È È È È È È È È È È È这就是为什么Bi(2)O(3)这就是HPGeGe的价值.这是一个MRCS.聚甲基甲基酸聚甲基甲基酸斯里姆蒙特卡罗的蒙特卡罗是一个很棒的城市.
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