具有丰富的异构结构的高性能复合弹性体,用于增强超宽带宽的电磁波吸收,具有超宽带宽
Tianyi Hang1, Jiajia Zheng1, Yijie Zou1
1Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology & Equipment of Zhejiang Province, College of Engineering, Zhejiang Normal University, Jinhua 321004, China.
Journal of colloid and interface science
|July 7, 2023
概括
这项研究开发了一种新的ecoflex/MXene复合弹性体,用于先进的电磁波吸收 (EWA). 该材料实现了出色的阻抗匹配和广泛的吸收带宽,克服了关键的EWA挑战.
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:
- 二维 (2D) MXene 材料显示出电磁波吸收 (EWA) 的前景.
- 一个关键的挑战是平衡阻抗匹配与增强介电损耗以获得最佳的EWA.
- 现有的基于MXene的吸收器通常在性能或机械性能方面面临限制.
研究的目的:
- 设计和制造一种新型的复合弹性体,具有用于优质EWA的多尺度架构.
- 为了解决基于MXene的吸收器中阻抗匹配和介电损失矛盾的问题.
- 为了提高电磁吸收器的机械性能.
主要方法:
- 使用ecoflex,2D MXene (Ti3C2Tx),零维的CoNi球体和一维的碳纳米管构建多尺度架构.
- 使用简单的液相减少和热固化方法进行材料合成.
- 复合弹性体的电磁波吸收能力和机械性能的描述.
主要成果:
- 该ecoflex/MXene复合弹性体在9.46GHz时表现出最小反射损失为-67dB,厚度为2.98毫米.
- 实现了6.07GHz的超宽有效吸收带宽.
- 复合材料的机械性能因填充剂和生态弹性矩阵之间强大的结合而得到改善.
结论:
- 开发的多维异构复合弹性体提供了出色的电磁波吸收性能.
- 该材料有效地平衡了阻抗匹配和介电损耗,克服了以前的限制.
- 这项工作为具有卓越EWA能力的高性能电磁吸收器提供了有前途的途径.
相关概念视频
Electromagnetic Waves in Matter
3.0K
Electromagnetic waves can travel in the vacuum as well as in matter. For example light, which is an electromagnetic wave, can travel through air, water, or glass.
Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the...
Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the...
3.0K
Electromagnetic Wave Equation
1.2K
Maxwell's equations for electromagnetic fields are related to source charges, either static or moving. These fields act on a test charge, whose trajectory can thus be determined using suitable boundary conditions. The objective of electromagnetism is thus theoretically complete.
However, although electric and magnetic fields were first introduced as mathematical constructs to simplify the description of mutual forces between charges, a natural question emerges from Maxwell's equations:...
However, although electric and magnetic fields were first introduced as mathematical constructs to simplify the description of mutual forces between charges, a natural question emerges from Maxwell's equations:...
1.2K
Propagation Speed of Electromagnetic Waves
3.4K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
3.4K
Dual Nature of Electromagnetic (EM) Radiation
2.1K
Electromagnetic (EM) radiation consists of electric and magnetic field components oscillating in planes perpendicular to each other and mutually perpendicular to radiation propagation through space. EM radiation can be classified as a wave, characterized by the properties of waves such as wavelength (denoted as λ) and frequency (represented by ν).
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the...
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the...
2.1K


