Vol. 21

Front:[PDF file] Back:[PDF file]
Latest Volume
All Volumes
All Issues
2011-10-07

Electrical Conductivity and Electromagnetic Shielding Effectiveness of Silicone Rubber Filled with Ferrite and Graphite Powders

By Cristian Morari, Ionut Balan, Jana Pintea, Elena Chitanu, and Iulian Iordache
Progress In Electromagnetics Research M, Vol. 21, 93-104, 2011
doi:10.2528/PIERM11080406

Abstract

There is increasing interest in electromagnetic interference (EMI) shielding due to the serious electromagnetic environment pollution caused by the continuously increased use of the electrical products and electronic devices. Electrical conductivity and EMI shielding effectiveness (SE) of composite materials made from silicone rubber with carbon powder and ferrite powder have been studied in microwaves and terahertz frequency ranges and the results are presented in this paper. In microwaves range, samples with higher electrical conductivity show a small variation of shielding performance with frequency, whereas the performance of samples with lower conductivity falls away with increasing frequency. It is shown that the variation of attenuation with frequency relates to the conductivity of the material.

Citation


Cristian Morari, Ionut Balan, Jana Pintea, Elena Chitanu, and Iulian Iordache, "Electrical Conductivity and Electromagnetic Shielding Effectiveness of Silicone Rubber Filled with Ferrite and Graphite Powders," Progress In Electromagnetics Research M, Vol. 21, 93-104, 2011.
doi:10.2528/PIERM11080406
http://jpier.org/PIERM/pier.php?paper=11080406

References


    1. Brzezinki, S., T. Rybicki, G. Malinowska, I. Karbownik, E. Rybicki, and L. Szugajew, "Effectiveness of shielding electromagnetic radiation, and assumptions for designing the multi-layer structures of textile shielding materials," Fibres & Textiles in Eastern Europe, Vol. 17, No. 1, 60-65, Jan./Mar. 2009.

    2. Barba, A. A., G. Lamberti, M. D'Amore, and D. Acierno, "Carbon black/silicone rubber blends as absorbing materials to reduce Electro Magnetic Interferences (EMI)," Polymer Bulletin, Vol. 57, 587-593, 2006.
    doi:10.1007/s00289-006-0598-z

    3. Ahmad, M. S., M. K. Abdelazeez, A. Zihliv, E. Martuscelli, G. Ragosta, and E. Scafora, "Some properties of nickel-coated carbon fibre-polypropylene composite at microwave frequencies," J. Mater. Sci., Vol. 25, 3083-3088, 1990.
    doi:10.1007/BF00587654

    4. Paligova, M., J. Vilcakova, P. Saha, V. K·rsalek, J. Stejskal, and O. Quadrat, "Electromagnetic shielding of epoxy resin composites containing carbon fibers coated with polyaniline base," Physica A, Vol. 335, 421-429, 2004.
    doi:10.1016/j.physa.2003.12.002

    5. Lee, C. Y., H. G. Song, K. S. Jang, and E. J. Oh, "Electromagnetic interference shielding effciency of polyaniline mixtures and multilayer films," Synthetic Metals, Vol. 102, 1346-1349, 1999.
    doi:10.1016/S0379-6779(98)00234-3

    6. Duan, Y. P., S. H. Liu, and H. T. Guan, "Investigation of electrical conductivity and electromagnetic shielding effectiveness of polyaniline composite," Science and Technology of Advanced Materials, Vol. 6, 513-518, 2005.
    doi:10.1016/j.stam.2005.01.002

    7. Hu, Y.-J., H.-Y. Zhang, F. Li, X.-L. Cheng, and T.-L. Chen, "Investigation into electrical conductivity and electromagnetic interference shielding effectiveness of silicone rubber filled with Ag-coated cenosphere particles," Polymer Testing, Vol. 29, 609-612, 2010.
    doi:10.1016/j.polymertesting.2010.03.009

    8. Evans, R. W., "Design guidelines for shielding effectiveness, current carrying capability, and the enhancement of conductivity of composite materials,", NASA Contractor Report 4784, Tec-Masters, Inc., Huntsville, Alabama, Aug. 1997.

    9. Chung, D. D. L., "Electromagnetic interference shielding effectiveness of carbon materials," Carbon, Vol. 39, 279-285, 2001.
    doi:10.1016/S0008-6223(00)00184-6

    10. Chung, D. D. L., "Materials for electromagnetic interference shielding," Journal of Materials Engineering and Performance, Vol. 9, 350-354, 2000.
    doi:10.1361/105994900770346042

    11. Al-Saleh, M. H. and U. Sundararaj, "Electromagnetic interference shielding mechanisms of CNT/polymer composites," Carbon, Vol. 47, 1738-1746, 2009.
    doi:10.1016/j.carbon.2009.02.030

    12. Schelkunoff, S. A., Electromagnetic Waves, D. Van Nostrand, Princeton, NJ, 1943.

    13. Schulz, R. B., V. C. Plantz, and D. R. Brush, "Shielding theory and practice," IEEE Trans. on Electromagnetic Compatibility, Vol. 30, No. 3, 187-201, Aug. 1988.
    doi:10.1109/15.3297

    14. Rea, S., D. Linton, E. Orr, and J. McConnell, "Electromagnetic shielding properties of carbon fibre composites in avionic systems," Microwave Review, Vol. 11, No. 1, 29-32, Jun. 2005.

    15. Yang, S., K. Lozano, A. Lomeli, H. D. Foltz, and R. Jones, "Electromagnetic interference shielding effectiveness of carbon nanofiber/LCP composites," Composites: Part A, Vol. 36, 691-697, 2005.
    doi:10.1016/j.compositesa.2004.07.009

    16. Dragoman, D. and M. Dragoman, "Terahertz fields and applications," Progress in Quantum Electronics, Vol. 28, 1-66, 2004.
    doi:10.1016/S0079-6727(03)00058-2

    17. Aegerter, M. A., Sol-Gel Technologies for Glass Producers and Users, Kluwer Academic Pub., Jun. 2004.

    18. Balanis, C. A., Advanced Engineering Electromagnetics, 42-94, John Wiley & Sons, Inc., New York, 1989.

    19. Dosoudil, R., M. Usakova, J. Franek, J. Slama, and V. Olah, "RF electromagnetic wave absorbing properties of ferrite polymer composite materials," Journal of Magnetism and Magnetic Materials, Vol. 304, 755-757, 2006.
    doi:10.1016/j.jmmm.2006.02.216

    20. Lucyszyn, S. and Y. Zhou, "Characterising room temperature THz metal shielding using the engineering approach," Progress In Electromagnetics Research, Vol. 103, 17-31, 2010.
    doi:10.2528/PIER10030801