Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-30T19:23:50.187Z Has data issue: false hasContentIssue false
  • English
  • Français

Microwave Electromagnetic Characteristics of a Microcoiled Carbon Fibers/paraffin Wax Composite in Ku Band

Published online by Cambridge University Press:  31 January 2011

Jin-Hong Du ,
Chao Sun ,
Shuo Bai ,
Ge Su ,
Zhe Ying  and
Hui-Ming Cheng
Jin-Hong Du
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
Chao Sun
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
Shuo Bai
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
Ge Su
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
Zhe Ying
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
Hui-Ming Cheng*
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
*
a)Address all correspondence to this author. e-mail: cheng@imr.ac.cn
Get access

Extract

The complex relative permittivity ∈γ and permeability μγ of microcoiled carbon fibers (MCCFs) imbedded in paraffin wax were measured at Ku band frequencies (12.4–18 GHz). Both the real and imaginary parts of the complex relative permittivity of the MCCFs/paraffin wax composite decreased with increase of the frequency. The real part of the complex relative permeability of the composite increases with increase of the frequency, and the imaginary part is nonzero and nearly constant over the measured frequency range. The dielectric loss tangent (tan δ∈), the magnetic loss tangent (tan δm), and amplitude attenuation factor (α) were determined as well. On the basis of the experimental results, the MCCFs/paraffin wax composite is mainly a kind of dielectric lossy material with small magnetic loss and diamagnetism in the Ku band.

Type
Articles
Information
Journal of Materials Research , Volume 17 , Issue 5 , May 2002 , pp. 1232 - 1236
Copyright
Copyright © Materials Research Society 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Sronier, R.A., SAMPE J. 27, 9 (1991).Google Scholar
2.Motojima, S., Kawaguchi, M., Nozaki, K., and Iwanaga, H., Carbon 29, 379 (1991).CrossRefGoogle Scholar
3.Motojima, S., Itoh, Y., Asakura, S., and Iwanaga, H., J. Mater. Sci. 30, 5049 (1995).CrossRefGoogle Scholar
4. 4. Motojima, S., Asakukura, S., Kasemura, T., Takaevchi, S., and Iwanaga, H., Carbon 34, 289 (1996).CrossRefGoogle Scholar
5.Kawaguchi, M., Nozaki, K., Motojima, S., and Iwanaga, H., J. Cryst. Growth 118, 309 (1992).CrossRefGoogle Scholar
6.Motojima, S. and Chen, X.Q., J. Appl. Phys. 85, 3919 (1999).CrossRefGoogle Scholar
7.Chen, X.Q., Kusunoki, M., and Motojima, S., J. Mater. Res. 14, 4329 (1999).CrossRefGoogle Scholar
8.Chen, X.Q. and Motojima, S., Carbon 37, 1817 (1999).CrossRefGoogle Scholar
9.Kaneto, K., Tsurute, M., and Motojima, S., Synth. Met. 103, 2578 (1999).CrossRefGoogle Scholar
10.Chen, X.Q., In-Hwang, W., Shimada, S., Fujii, M., Iwanaga, H., and Motojima, S., J. Mater. Res. 15, 808 (2000).CrossRefGoogle Scholar
11.Sun, G.S., Yao, K.L., Liao, H.X., Niu, Z.C., and Liu, Z.L., Int. J. Electron. 87, 735 (2000).CrossRefGoogle Scholar
12.Neelakanta, P.S. and Subramaniam, K., Adv. Mater. Processes 3, 20 (1992).Google Scholar
13.Varadan, V.K. and Varadan, V.V., Electromagnetic shielding and absorptive materials, U.S. Patent No. 89/03890 (1989).Google Scholar
14.Chen, X.Q., Motojima, S., and Iwanaga, H., Carbon 37, 1825 (1999).CrossRefGoogle Scholar
15.Varadan, V.K., Hollinger, R.D., and Varadan, V.V., Smart Mater. Struct. 9, 413 (2000).CrossRefGoogle Scholar
16.Du, J.H., Su, G., Bai, S., Sun, C., and Cheng, H.M., Sci. China, Ser. E 44, 377 (2001).CrossRefGoogle Scholar
17.Zhao, D.L., Chen, X.H., and Shen, Z.M., Extended abstracts, Eurocarbon 2000, 1st World Conference on Carbon, 9–13 July 2000, Berlin, Germany, 803.Google Scholar
18.Ni, E.H., Dielectric spectra technology in material science, 1st ed. (Science Press, Beijing, China, 1998), pp. 1, 346.Google Scholar
19.Weir, W.B., Proc. IEEE 62, 33 (1974).CrossRefGoogle Scholar
20.Du, J.H., private communication with the Research Institute of Aeronautical Materials, Beijing, China (2001).Google Scholar
21.Fischbach, D.B., Phys. Rev. 123, 1613 (1961).CrossRefGoogle Scholar
22.Wakabayashi, K., Fujita, M., Ajiki, H., and Sigrist, M., Physica B 280, 388 (2000).CrossRefGoogle Scholar
23.McClure, J.W., Phys. Rev. 119, 606 (1960).CrossRefGoogle Scholar
24.Umari, M.H., Varadan, V.K., and Varadan, V.V., Radio Sci. 26, 1327 (1991).CrossRefGoogle Scholar