Advertisement

European Journal of Wood and Wood Products

, Volume 69, Issue 4, pp 671–673 | Cite as

Shielding of electromagnetic radiation by using wood-cement boards modified with carbon in microwave frequency band

  • Ivan MakovínyEmail author
  • Katarína Makovínyiová
Brief Originals Kurzoriginalia

Abstract

The paper focuses on the development of carbon-modified wood-cement boards made of wood-wool for the purpose of shielding electro-magnetic radiation in the microwave frequency band. Powder coal was used as the electric conductive admixture to increase electric conductivity of wood-cement boards, and thus also total insertion loss. Increasing the concentration of carbon up to 25 wt% resulted in considerable rise of electric conductivity by 7 orders. The total insertion loss is directly proportional to thickness of the wood-cement board.

Keywords

Portland Cement Carbon Concentration Insertion Loss Copper Powder Hole Conductivity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Abschirmung elektromagnetischer Strahlen durch mit Karbon modifizierte Holz-Zement-Platten im Mikrowellenfrequenzbereich

Notes

Acknowledgements

This research was supported by Slovak Agency for support of the research and of the development under project APVV–0229-06 “Applied research of wood-cement boards for screening of the electromagnetic fields and for increasing of the fire resistance.”

References

  1. Ishii TK (1995) Handbook of microwave technology. Applications, vol 2. Academic Press, San Diego, 679 pp Google Scholar
  2. Ishihara S (1992) Carbon composites from wood charcoal as an electromagnetic shield and fire resistive material. In: Proceedings, all division conference on forest products, vol 1, Nancy, pp 125–127 Google Scholar
  3. Makovíny I (1999) Interaction of electromagnetic field with wood and wood based materials, 1st edn. Technická univerzita vo Zvolene, Zvolen, p 62 (in Slovak) Google Scholar
  4. Nagasawa C, Kumagai Y (1989) Electromagnetic shielding particle-boards with nickel-plated wood particle. J Wood Sci 35(12):1092–1099 Google Scholar
  5. Nagasawa C, Kumagai Y, Urabe K (1990) Electromagnetic shielding effectiveness particleboard containing nickel-metalized wood particles in the core layer. J Wood Sci 36(7):531–537 Google Scholar
  6. Nagasawa C, Kumagai Y, Urabe K (1991) Electro-conductivity and electromagnetic shielding effectiveness of nickel-plated veneer. J Wood Sci 37(2):158–163 Google Scholar
  7. Nagasawa C, Umehara H, Koshizaki N, Urabe K, Kumagai Y, Kanbe T (1994) Effects of wood species on electroconductivity and electromagnetic shielding properties of electrolessly plated sliced veneer with nickel. J Wood Sci 40(10):1092–1099 Google Scholar
  8. Scott AW (2005) Understanding microwaves, revised edn. Wiley, New York, 560 pp Google Scholar
  9. Wallace GG, Spinks GM, Kane-Maguire LAP, Teasdale PR (2009) Conductive electroactive polymers: intelligent polymer systems, 3rd edn. CRC Press, Boca Raton Google Scholar
  10. Wang L, Li J, Liu Y (2006) Preparation of electromagnetic shielding wood-metal composite by electroless nickel plating. J For Res 17(1):53–56 CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Faculty of Environmental and Manufacturing TechnologyTechnical University in ZvolenZvolenSlovakia
  2. 2.Faculty of Wood Sciences and TechnologyTechnical University in ZvolenZvolenSlovakia

Personalised recommendations