用于高效吸收电磁波的宁衍生功能材料的生产,具有超低的填充比率
Yuebin Xi1, Xingxiang Ji1, Fangong Kong1
1Key Laboratory of Pulp and Paper Science and Technology of Ministry of Education, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
Polymers
|January 23, 2024
概括
研究人员开发了一种新的3D层次性素衍生的多孔碳 (HLPC),用于优异的电磁波 (EMW) 吸收. 这种生物质衍生材料为先进的EMW吸收应用提供了可持续的解决方案.
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:
- 工业质素是纸和乙醇生产的副产品,作为低档燃料,它经常被不足利用.
- 从素中开发高价值的功能性材料仍然是材料科学中的一个重大挑战.
研究的目的:
- 为了合成一种新型的三维层次性木质素衍生的多孔碳 (HLPC) 材料.
- 为了评估合成的HLPC的电磁波 (EMW) 吸收性能.
- 阐明EMW增强吸收特性背后的机制.
主要方法:
- 作为碳源,利用了硫酸盐和MgCO3作为模板来制造HLPC.
- 通过均混合前体和模板,制造出3D层次的多孔结构.
- 描述了HLPC,素衍生的碳 (LC) 和素衍生的多孔碳 (LPC) 的形态和电磁参数.
主要成果:
- HLPC表现出优异的电磁波吸收性能,填料含量低,重量为7%.
- 在1.7毫米厚度和13.8 GHz时,达到41.8dB的最小反射损失 (RL).
- 在1.6毫米厚度下获得4.53GHz的最大有效吸收带宽 (EAB).
结论:
- HLPC的3D分层多孔结构通过界面极化和导电损失增强了EMW吸收.
- 本研究提出了一种可行的策略,用于合成基于生物质的碳材料,以实现高性能EMW吸收.
- 在需要高效电磁屏蔽的应用中,HLPC显示出了潜在的潜力.
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