一个序列式双固化硫环氧系统的电磁干扰屏蔽,用高形状记忆的GNP增强,具有高形状记忆
Ignacio Collado1, Antonio Vázquez-López1, Simón Heredia2
1Materials Science and Engineering Area, Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos, C/Tulipán s/n, 28933 Madrid, Spain.
ACS applied materials & interfaces
|March 12, 2025
概括
双固化环氧复合材料与石墨烯纳米板块同时提供电磁干扰 (EMI) 屏蔽和形状记忆功能. 这些先进的材料提供近99%的形状恢复和高达24dB的EMI屏蔽,非常适合现代电子设备.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 聚合物化学 聚合物化学
背景情况:
- 现代电子产品需要能够在狭窄的空间中处理电磁干扰 (EMI) 和热量的材料.
- 需要同时为EMI和热管理提供解决方案,利用具有高导电性的材料.
- 适应性材料,如双固化环氧系统,提供了潜在的解决方案.
研究的目的:
- 开发和评估用石墨烯纳米板块 (GNP) 增强的双固化环氧系统.
- 调查 GNP 含量对材料性能的影响,包括 EMI 屏蔽和形状记忆性能.
- 为了证明这些复合材料在先进电子应用中的多功能功能.
主要方法:
- 双固化环氧系统的合成使用醇-环氧化学.
- 用不同度的石墨烯纳米板块 (GNP) 加强环氧基质.
- 机械性能,形状记忆行为和电磁干扰 (EMI) 屏蔽效率的表征.
- 近场和远场EMI屏蔽的建模,以与实验数据进行比较.
主要成果:
- 石墨烯纳米板块 (GNP) 加载显著增强了性能.
- 形状记忆固定和恢复率仍然很高,接近99%,即使增加了GNP含量.
- 在较高的GNP度下,达到24dB的最大电磁干扰 (EMI) 屏蔽效率.
- 实验性EMI屏蔽结果与开发的近场和远场模型保持一致.
结论:
- 用GNP增强的双固化环氧复合材料表现出优秀的多功能性能.
- 这些材料有效地解决了EMI屏蔽和形状记忆应用中的挑战.
- 开发的复合材料显示出在需要集成功能的先进电子设备中使用的巨大潜力.
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