形状记忆复合膜具有广泛可编程的电磁屏蔽效率
Zhiyong Zeng1, Jv Li1, Chuanru Zheng2
1College of Textile Science and Engineering, Jiangnan University, Wuxi 214122, P. R. China. wenbingli@jiangnan.edu.cn.
Nanoscale
|May 14, 2025
概括
本研究介绍了一种智能复合膜,用于可调节的电磁干扰 (EMI) 屏蔽. 这种可适应的材料表现出了优秀的形状记忆和电热性能,适用于先进的屏蔽应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 智能材料是一种智能材料.
背景情况:
- 传统的电磁干扰 (EMI) 屏蔽材料往往缺乏适应性.
- 形状记忆的智能材料提供了增强EMI屏蔽功能的潜力.
- 开发多功能和智能屏蔽复合材料是一个关键的研究领域.
研究的目的:
- 准备一个智能复合膜,具有可调节的电磁屏蔽能力.
- 为了研究复合材料的形状记忆和电热特性.
- 探索材料在先进的电磁屏蔽应用中的潜力.
主要方法:
- 电被用来制造交联的聚乙烯-联合乙酸 (EVA) 纤维膜.
- 多巴胺修饰应用于EVA膜表面.
- 使用浸涂技术将MXene纳米片沉积在修改后的膜上.
主要成果:
- 在X频段中,EVA/PDA/MXene复合膜实现了高电磁屏蔽效率 (高达74.7dB).
- 形状固定和恢复率超过了90%,这表明形状记忆性能很好.
- 可调节的屏蔽效率 (26.2dB到74.7dB) 在变化的拉伸应变 (0-30%) 中实现.
- 膜在曲/折叠下表现出稳定的屏蔽性能,并证明了电热转换能力 (93.2 °C 2.5 V).
结论:
- 开发的多功能复合膜提供可调节的电磁屏蔽功能.
- 该材料的适应性,形状记忆和电热性能使其适用于先进的应用.
- 这项工作为开发智能电磁屏蔽复合材料提供了新的方向.
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