优化设计的多维异构结构向轻量级,宽带,高效率,和阻燃电磁波吸收复合材料的优化设计
Ying-Ming Li1, Yi-Ran Li1, Hang-Ping Fang1
1China-Spain Collaborative Research Center for Advanced Materials, College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
ACS applied materials & interfaces
|September 13, 2024
概括
一种新的电磁波吸收材料,CNT-rGO-Co/Ni-MOF,表现出高效率和宽带性能. 这种轻质复合材料显示出在电磁干扰屏蔽中具有先进应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 电磁主义 电磁主义
背景情况:
- 电磁波的吸收对于减少干扰至关重要.
- 开发轻量级,高性能吸收器仍然是一个挑战.
研究的目的:
- 开发一种新的多维电磁波吸收材料.
- 为了评估复合材料的吸收性能和热稳定性.
主要方法:
- 通过结合碳氧化碳纳米管 (CNT),石墨烯氧化物 (GO) 和/基金属有机框架 (Co/Ni-MOF) 合成了一种复合材料.
- 将复合物纳入不同重量百分比的氨酸矩阵中.
- 使用反射损失 (RL) 和有效吸收带宽 (EAB) 评估电磁波吸收.
- 通过测量环氧树脂 (EP) 中的热释放能力和峰值热释放率来评估热稳定性.
主要成果:
- CNT-rGO-Co/Ni-MOF复合材料在16.4GHz时实现了-43dB的最小反射损失 (RLmin),有效吸收带宽 (EAB) 超过4GHz,厚度为1.5毫米.
- 该材料具有出色的轻量级,宽带和高效的吸收特性.
- 将10%的复合材料纳入环氧树脂,将热释放能力降低了59.2%,峰值热释放率降低了52.6%.
结论:
- 开发的CNT-rGO-Co/Ni-MOF复合材料是一种高效的电磁波吸收器.
- 该材料的性能归因于多界面极化损失,电阻损失和磁介质损失.
- 该复合材料还增强了环氧树脂的热稳定性,表明了双重功能.
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