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具有层级梯度结构的直接写印环氧复合材料:形状记忆和电磁屏蔽性能.

Junyao Zhou1, Xianglong Zhu1, Pan Deng1

  • 1Zhejiang-Italy Joint Lab for Smart Materials and Advanced Structures, School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China.

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概括
此摘要是机器生成的。

研究人员开发了智能电磁屏蔽复合材料,使用直接的墨水写作. 这种渐变结构的材料显著减少了反射 (39.1%),并提供了出色的形状记忆,解决了电磁污染和材料回收的挑战.

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直接使用墨水打印.电磁屏蔽是一种电磁屏蔽.环氧树脂是一种环氧树脂.梯度结构是一种梯度结构.形状记忆 形状记忆 形状记忆

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科学领域:

  • 材料科学 材料科学 材料科学
  • 电磁主义 电磁主义
  • 纳米技术 纳米技术

背景情况:

  • 电磁污染日益严重的问题需要先进的屏蔽解决方案.
  • 智能,多功能电磁屏蔽材料对于现代电子设备至关重要.
  • 现有的材料往往受到高反射率的影响,导致二次电磁污染.

研究的目的:

  • 为了制造一个智能,低反射,高吸收的电磁屏蔽复合材料.
  • 利用直接的墨水写作来精确控制材料结构和特性.
  • 研究制造复合材料的电磁屏蔽性能和形状记忆行为.

主要方法:

  • 使用粉 (Ni),多壁碳纳米管 (MWCNTs) 和银粉 (Ag) 填充剂制造环氧树脂 (EP) 基复合材料.
  • 利用直接油墨打印来创建具有统一结构和分层梯度结构的复合材料.
  • 具有特征的微观结构,电,磁,介电性质,以及电磁屏蔽效率 (SE).

主要成果:

  • 梯度结构复合材料表现出受控的电导率和磁透度梯度.
  • 分层梯度结构复合材料实现了17.74dB的总屏蔽效率 (SE_T),并将反射系数 (R) 降低了39.1% (R=0.53).
  • 在直流电压下变形后,复合材料表现出优异的形状记忆特性 (Rf > 92%,Rr > 92%).

结论:

  • 直接墨水写作可以制造具有定制性能的多功能电磁屏蔽复合材料.
  • 梯度结构有效减少电磁波反射,减轻二次污染.
  • 形状记忆能力提高了对合规涂层和材料回收的适用性,为下一代屏蔽材料铺平了道路.