电子元件与材料2026，Vol.45Issue(1)：1-8,8.DOI:10.14106/j.cnki.1001-2028.2026.1314
表面修饰工程优化多壁碳纳米管微波吸收性能
Optimization of microwave absorption properties of multi-walled carbon nanotubes by surface modification engineering
摘要
Abstract
The rapid development of electromagnetic wave technology demands high-performance absorbing materials.Carbon nanotubes are widely used for absorption due to strong conduction loss from high electrical conductivity losses,but single loss mechanism limits the further performance improvement.By systematically comparing and analyzing the microwave absorption properties of pristine multi-walled carbon nanotubes(MWCNTs),hydroxyl-functionalized carbon nanotubes,and carboxyl-functionalized carbon nanotubes,the role of induced polarization loss in enhancing electromagnetic dissipation was clarified.Carboxyl-functionalized carbon nanotubes show a 94%wider absorption bandwidth and an 80%higher absorption intensity than the pristine multi-walled carbon nanotubes.The minimum reflection loss reaches-60.99 dB at 3.8 mm thickness.Density functional theory calculations reveal that polar functional groups enhance dipole polarization synergistically.This improvement significantly strengthens interfacial polarization and loss properties,providing new theoretical perspectives and research avenues for the polarization mechanism of the surface functional groups regulation of carbon nanotubes.关键词
碳纳米管/电磁波吸收/表面官能团/偶极极化Key words
carbon nanotubes/electromagnetic wave absorption/surface functional groups/dipole polarization分类
信息技术与安全科学引用本文复制引用
李畅,张俊毅,孙宁,张茹,黄凯..表面修饰工程优化多壁碳纳米管微波吸收性能[J].电子元件与材料,2026,45(1):1-8,8.基金项目
北京邮电大学青年科技创新人才支持计划项目(2023ZCJH03) （2023ZCJH03）
北京邮电大学研究生创新创业项目资助(2025-YC-A083) （2025-YC-A083）
