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电磁多孔纤维素基基质复合材料:一种绿色电磁屏蔽材料,具有高吸收效率的电磁干扰

Wenyao Feng¹, Qinglei Xu¹, Jiahao Zhao¹

¹College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, PR China.

International journal of biological macromolecules

|July 3, 2024

概括

研究人员开发了一种基于木材的新型复合材料,用于高效的电磁干扰 (EMI) 屏蔽. 这种绿色材料利用独特的结构和磁性纳米粒子来显著阻断不需要的电子信号.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
绿色化学绿色化学

背景情况:

电磁干扰 (EMI) 屏蔽对于现代电子设备至关重要.
开发可持续和高性能EMI屏蔽材料是迫切需要的.
木材的自然3D多孔结构为先进的材料设计提供了潜力.

研究的目的:

创建高效和环保的电磁干扰 (EMI) 屏蔽材料.
调查使用脱木材作为磁电复合材料的矩阵.
探索介电和磁性损失对增强EMI屏蔽的协同效应.

主要方法:

通过PEDOT和Fe3O4在脱木材中的现场聚合制造磁电性树脂纤维素复合材料.
复合材料的导电性,磁性和电磁屏蔽效率 (SE) 的表征.
评估机械性能,包括压力和拉伸强度.

主要成果:

该Fe3O4/PEDOT@wood复合材料在X频段中表现出极好的EMI屏蔽效率 (SE),最高达59.8dB.
该材料具有高导电性 (103 S/m) 和良好的磁性 (26.7 emu/g).
实现了高的SE_A/SE_T比率 (84.2%95.7%) 和显著的机械强度 (100.8 MPa压力,18.1 MPa拉力).

结论:

开发的Fe3O4/PEDOT@木复合材料为高效率的EMI屏蔽提供了一个有前途的解决方案.
木制结构中介电和磁损失的协同效应是其性能的关键.
这项研究为从可再生资源中创建先进的EMI屏蔽材料提供了可持续的途径.

关键词:

电磁屏蔽是一种电磁屏蔽.高介电常数高介电常数在现场的聚合.基纤维素酸性纤维素.电磁复合材料的使用

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