期刊
DIAMOND AND RELATED MATERIALS
卷 52, 期 -, 页码 66-71出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.diamond.2014.12.008
关键词
Carbon nanotubes; Polymer-matrix composites; Scanning electron microscopy (SEM); Electromagnetic properties; Microwave absorption; Dielectric properties
类别
资金
- Air Force Office of Scientific Research (AFOSR) [FA9550-09-1-0367, FA9550-11-10330]
- National Science Foundation (NSF) LASIGMA project [EPS-1003897, NSF92010-15-RII-SUBR]
- Office Of The Director
- EPSCoR [1003897] Funding Source: National Science Foundation
In this work, multi-walled carbon nanotube (MWCNT) (outer diameters (OD) in the range of 20-30 nm)-epoxy composites were fabricated. The MWCNT loadings in the polymer composites were controlled from 1-10 wt%. An Agilent PNA Network analyzer was utilized in the measurements of microwave absorption (MA) properties of these MWCNT-epoxy composites over a wide frequency range of 1-26.5 GHz. The measurement results showed that MA strongly depends on MWCNT loadings in the composites. In addition, the microwave reflection, transmission, and dielectric permittivity of the MWCNT-epoxy composites are also investigated. The composite with 8 wt.% MWCNT loading shows high microwave absorption as well as low reflection and transmission. These MWCNT-epoxy composites with 8-10 wt.% MWCNT loadings show a significant potential for microwave technology applications. (C) 2014 Elsevier B.V. All rights reserved.
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