碳纳米管在MOF衍生的高合金上与高效电磁波吸收的高合金的现场生长
Zhongjing Wang1,2, Bin Meng1,2, Xingyu Ping1,2
1Faculty of Materials Science & Engineering, Kunming University of Science & Technology, Kunming 650093, China.
Materials (Basel, Switzerland)
|January 28, 2026
概括
用碳纳米管涂层的高合金显示出优异的电磁波吸收. 这种通过MOF衍生路径合成的新型材料,实现了显著的反射损失和广泛的吸收带宽,适用于先进的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 电磁学 电磁学 电磁学 电磁学
背景情况:
- 开发有效的电磁波 (EMW) 吸收材料对于现代电子设备至关重要.
- 金属有机框架 (MOF) 衍生的高合金 (HEAs) 具有独特的结构和组成优势.
- 碳纳米管 (CNTs) 具有出色的电导率和可调节的电磁波吸收特性.
研究的目的:
- 创建一个新的复合材料,以提高EMW吸收.
- 研究在MOF衍生HEAs上的CNTs的现场增长.
- 为了将结构演变与微波吸收性能相关联.
主要方法:
- 从MOFs中提取的FeCoNiMnMg HEA的合成.
- 在HEA表面通过溶热和单阶段热解方法在现场增长CNT.
- 结构变化的特征 (CNT长度,缺陷密度) 与不同的热解温度 (600-800°C).
主要成果:
- 成功制造HEA@CNT复合材料,在更高的热解温度下增加CNT长度 (高达600nm) 和缺陷密度.
- 随着温度的增加,提高了HEA@CNT复合材料的介电性质和阻抗匹配.
- 在1.9毫米厚度下,HEA@CNT-800样本实现了-57.52dB的最小反射损失 (RLmin) 和4.4GHz的有效吸收带宽 (EAB).
结论:
- 在MOF衍生HEAs上的CNTs的现场增长是高性能EMW吸收的有效策略.
- 热解温度在调整CNT特征和优化吸收特性方面发挥着关键作用.
- 这种方法为设计先进的MOF衍生微波吸收器提供了新的途径.
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