Electrical and electromagnetic shielding behavior of laminated epoxy–carbon fiber composite

Polymer International - Tập 34 Số 2 - Trang 145-150 - 1994
Y. Ramadin1, S. Abdul Jawad1,2, Sharif Musameh1,2, Mifrah Ahmad1, A. M. Zihlif1, Antonio Paesano3, E. Martuscelli3, G. Ragosta3
1Physics Department, University of Jordan, Amman, Jordan
2Visiting physicists at the Laboratory of Physics of Materials from UAE University and Najah University.
3Institute of Research and Technology of Plastic Materials, Via Toiano 6,80072 Arco Felice (NA), Italy

Tóm tắt

AbstractThis paper reports results on the electrical properties of laminated epoxy composite containing 25 layers of carbon fibers in the form of mats. The dependence of the activation energy (calculated from DC resistivity measurements) on temperature reveals two independent conduction processes. The AC impedance is independent of the applied frequency below 75°C, and the real componet of the dielectric constant is also independent of temperature at high frequencies. The determined shielding effectiveness is dominated by the insertion loss. The observed optimum shielding effectiveness occurs at 30 mm spacing and applied frequency 9 GHz.

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Polymer International

Tập 34 Số 2

145-150

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