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开发用于核屏蔽的/聚氨微/纳米复合材料新型供应:γ光谱和FLUKA模拟技术

Ahmed M El-Khatib¹, Mahmoud I Abbas¹, Mohamed E Mahmoud²

¹Physics Department, Faculty of Science, Alexandria University, Alexandria 21511, Egypt.

|November 25, 2023

概括

这项研究研究了聚氨泡中的纳米粒子,发现它们提高了热稳定性,但降低了压缩强度. 添加剂还可以增强辐射屏蔽性能.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
纳米技术纳米技术

背景情况:

聚氨 (PU) 泡是多功能材料,在各个行业都有应用.
提高PU泡的热物理和机械性能对于先进的应用至关重要.
(Pb) 纳米粒子由于其独特的特性,具有提高材料性能的潜力.

研究的目的:

研究将 (Pb) 纳米/微粒纳入聚氨 (PU) 泡中的影响.
评估Pb填充剂对PU纳米复合材料的热物理,机械和核辐射屏蔽性能的影响.
分析PU矩阵内的Pb填充剂的分散和形态.

主要方法:

通过现场聚合合成的/聚氨纳米复合物的合成.
使用富里埃变换红外光谱 (FTIR),扫描电子显微镜 (SEM),传输电子显微镜 (TEM) 和X射线衍射 (XRD) 的表征.
通过压缩测试评估机械性能,通过热重力学分析 (TGA) 评估热稳定性.
使用实验方法和蒙特卡洛模拟 (FLUKA代码) 评估核辐射屏蔽性能.

主要成果:

纳米粒子在聚氨矩阵内均分布.
加入Pb填充剂,特别是纳米填充剂,提高了PU泡的热稳定性.
与纯聚氨相比,纳米复合材料的压缩强度降低了.
/聚氨纳米复合材料在广泛的能量范围内表现出有希望的核辐射屏蔽能力.

结论:

纳米颗粒可以有效地纳入聚氨泡,以提高热稳定性和辐射屏蔽.
虽然机械强度可能会受到损害,但改进的热和屏蔽性能为专业应用提供了潜力.
进一步的研究可以优化填充剂的含量和加工,以平衡性能.

关键词:

弗鲁卡弗鲁卡弗鲁卡弗鲁卡里叶变换红外分析蒙特卡罗的蒙特卡罗是一个非常好的城市.在X射线中,X射线的衍射效果是不同的.领导纳米复合材料的纳米复合材料核保护核保护核保护热重力度分析分析的热重力度分析

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