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高性能多功能碳纤维海绵来自场
Haiyang Wang1,2, Xiaopeng Bai3, Yufeng Wu1
1State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|June 26, 2024
概括
研究人员使用激光辅助旋转开发了轻量级的3D碳海绵,用于高效的油吸收和电磁干扰 (EMI) 屏蔽. 这些多孔的碳材料提供了高性能和具有成本效益的大规模生产的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 化学工程是化学工程的重要组成部分.
背景情况:
- 基于碳的3D多孔海绵显示了油吸收和电磁干扰 (EMI) 屏蔽的前景.
- 目前的局限性包括高性能和成本效益大规模生产之间的权衡.
研究的目的:
- 开发一种负担得起和可扩展的方法来生产高性能3D碳海绵.
- 为了创建基基亚微米碳纤维 (PSCFs) 的海绵,具有相互连接的结构,以增强性能.
主要方法:
- 利用激光辅助微区加热造 (LMHMS) 来制造PSCF的海绵.
- 描述了海绵的密度,多孔性,可压缩性,导电性,油吸附性和EMI屏蔽效率.
主要成果:
- 实现了超低密度 (≈20 mg cm-3),高孔隙性 (≈99%) 和出色的压缩性 (80%的应变).
- 已证明具有优越的导电性 (≈628 S m-1) 和高油/有机溶剂吸附能力 (>56 g/g),具有再生能力.
- 呈现出强大的EMI屏蔽 (X波段SE>60dB),具有高的SE特异性 (≈1466dBcm3g-1).
结论:
- 新的LMHMS方法使高性能PSCF海绵的成本效益高的生产成为可能.
- 这些海绵提供了一种独特的轻量,机械强度,油吸附和EMI屏蔽能力的组合.
- 开发的PSCF海绵为环境修复和先进的EMI屏蔽应用提供了有希望的解决方案.
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