Multiband microwave absorption films based on defective multiwalled carbon nanotubes added carbonyl iron/acrylic resin

作者：Li, Yong^*; Chen, Changxin; Pan, Xiaoyan; Ni, Yuwei; Zhang, Song; Huang, Jie; Chen, Da; Zhang, Yafei

来源：Physica B: Condensed Matter , 2009, 404(8-11): 1343-1346.

DOI：10.1016/j.physb.2008.12.015

• Carbon nanotubes
• Carbonyl iron
• Microwave absorption
• Films

Defective multiwalled carbon nanotubes (MWCNTs) were introduced to the carbonyl iron (CI) based composites to improve its microwave absorption by a simple ultrasonic mixing process. The electromagnetic parameters were measured in the 2-18 GHz range. Microwave absorption of CI based composites with 2 mm in thickness was evidently enhanced by adding as little as 1.0 wt% defective MWCNTs with two well separated absorption peaks exceeding -20 dB, as compared with that of pure Cl based and defective MWCNTs composites. The enhancement mechanism is thought due to the interaction and better electromagnetic match between defective MWCNTs and ferromagnetic CI particles.

• 出版日期2009-5-1
• 单位华东理工大学; 上海交通大学