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具有高度有序结构的黑色素类纳米纤维实现了超高的特异性电磁干扰屏蔽效率

Peng Chen¹, Shibo He¹, Tianyou Wang¹

¹College of Polymer Science and Engineering, State Key Laboratory of Advanced Polymer Materials, Sichuan University, 610065, Chengdu, China.

Nature communications

|August 2, 2025

概括

研究人员从生物灵感聚合物中开发出类似黑色素的纳米纤维,用于先进的电磁屏蔽. 这些材料提供了卓越的微波吸收和高电磁干扰屏蔽效率,为下一代屏蔽应用铺平了道路.

科学领域:

材料科学材料科学材料科学
聚合物化学聚合物化学
电磁学电磁学电磁学电磁学

背景情况:

高性能电磁屏蔽材料需要精确的结构设计.
传统材料在平衡性能和可加工性方面面临着挑战.
具有增强可加工性的内在合聚合物非常受欢迎.

研究的目的:

为电磁屏蔽设计具有高度排序的微观结构的生物灵感聚合物.
探索新型黑色素样纳米纤维的微波吸收特性.
为了证明黑色素类聚合物在微波频谱中的潜力.

主要方法:

利用一个5,6-二二英醇环四聚合物框架来构建类似黑色素的纳米纤维.
调整 π-π 堆叠以实现高度排序的聚合物微结构.
制造的类似黑色素的气凝用于微波吸收测试.

主要成果:

达到最大的微波反射损失为-68.87dB.
获得了5.25GHz的有效吸收带宽.
在X频段中,其特定电磁干扰 (EMI) 屏蔽效率为47909.9 dB cm2/g.

结论:

成功地将黑色素类聚合物扩展到微波频谱中.
类似黑色素的气凝具有卓越的微波吸收和EMI屏蔽性能.
工程生物灵感聚合物显示出电磁场应用的巨大潜力.

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