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

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Date

2009-05-01

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Abstract

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 CI 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.

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Keywords

Carbon nanotubes, Carbonyl iron, Films, Microwave absorption

Citation

URI

https://dspace-test.anu.edu.au/handle/1885/733738471

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DevOps Pure Testing

Source

Physica B: Condensed Matter

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Article

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DOI

10.1016/j.physb.2008.12.015

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