JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Study on the Magnetic Shield Effect of Carbon-based Materials at Extremely Low Frequency
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Study on the Magnetic Shield Effect of Carbon-based Materials at Extremely Low Frequency
Oh, Seong Moon; Kang, Dong Su; Lee, Sang Min; Baek, Un Gyeong; Roh, Jae Seung;
  PDF(new window)
 Abstract
To examine the magnetic shielding effect for carbon-based materials at extremely low frequencies (60 Hz), two types of carbon black (Super-P and Denka Black) and a natural graphite (HC-198) were mixed into organic binder at 10 wt.% to produce a coating solution, and a powder coating with varying thickness was applied on an aluminum disk measuring 88 mm in radius. A device was developed to measure the sheielding effect at extremely low frequencies. A closed circuit was achieved by connecting a transformer and a resistor. The applied voltage was fixed at 65 V, and the magnetic field was measured to being the range of 4.95~5.10 mG. Depending on the thickness of the coating layer, the magnetic field showed a decreasing trend. The maximum decrease in the magnetic field of 38.3% was measured when natural graphite was coated with specimens averaging . This study confirmed that carbon-based materials enable magnetic shielding at extremely low frequencies, and that the magnetic shielding effect can be enhanced by varying the coating thickness.
 Keywords
Magnetic field;magnetic shielding;carbon-based materials;extremely low frequency;
 Language
Korean
 Cited by
 References
1.
P.Y. Park, "Preparation and Characterization of polymer nanofiber for EMI shielding", Department of Chemical Engineering Graduate School, Keimyung University, 2010

2.
N. Li, Y. Huang, F. Du, X. He, X. Lin, H. Gao, Y. Ma, F. Li, Y. Chen and Peter C. Eklund, "Electromagnetic Interference (EMI) Shielding of Single-Walled Carbon Nanotube Epoxy Composites", Nano Letters, Vol. 6, 2006, pp.1141-1145 crossref(new window)

3.
S.S. Tzeng, F. Chang, "EMI shielding effectiveness of metal-coated carbon fiber-reinforced ABS composites", Material Science and Engineering: A, Vol. 302, 2001, pp.258-267

4.
K.B. Cheng, S. Ramakrishna, K.C. Lee, "Electromagnetic shielding effectiveness of Copper/glass fiber knitted fabric reinforced polypropylene composites", Composites A: Applied Science and Manufacturing, Vol. 31, 2000, pp.1039-1045

5.
S.B. Kim, J.Y. Soh, K.Y. Shin, J.H. Jeong and S.H. Myung, "Magnetic Shielding Performance of Thin Metal Sheets Near Power Cables", IEEE Trans. on Magnetics, Vol.46, 2010, pp.682-685 crossref(new window)

6.
Q. Liu, D. Zhang, T. Fan, J. Gu, Y. Miyamoto and Z. Chen, "Amorphous carbon-matrix composites with interconnected carbon nano-ribbon networks for electromagnetic interference shielding", Carbon, Vol.46, 2008, pp.461-465 crossref(new window)

7.
D.D.L. Chung, "Electromagnetic interference shielding effectiveness of carbon materials", Carbon, Vol. 39, 2001, pp. 279-285 crossref(new window)

8.
Kong S., Du Y., Bunnett J., "Experiment on Finite-width planar sheets for ELF Magnetic Field Shielding", 1999 International Symposium on Electromagnetic Compatibility, 1999, pp.524-527

9.
N.C. Das, D. Khastgir, A. Chakraborty, "Electromagnetic interference shielding effectiveness of carbon black and carbon fiber filled EVA and NR based composites" composites part A, Vol.31, 2000, pp. 1069-1081 crossref(new window)

10.
H.J. Park, "A Study of the Electromagnetic Shielding for CFRP in Electronic Devices", Department of Carbon Fusion Engineering Graduated School, Jeonju University, 2014

11.
Y.Y. Kim, "Variation in electromagnetic interference shielding characteristics of polymer nanocomposites by surface treatment of carbon nanotubes", Department of Applied Chemistry and Biological Engineering, Graduated School, Chungnam National University, 2011

12.
K.Y. Kim, "A Study on Electromagnetic Interference Shielding Effectiveness of Composites with Conductive Filler", Chosun University, 2011

13.
D.H. Song, "A study on Electromagnetic interference shielding effectiveness of the Metal mesh/fiber reinforced composites", Department of Mechanical Engineering Graduated School, Chosun University, 2010

14.
Xiangcheng Luo, Chung D.D.L., "Electromagnetic interference shielding using Composites part B: Engineering", Vol.30, 1999, pp. 227-331

15.
H.M. Kim, K. Kim, S. Lee, J. Joo, H.S. Yoon, S.J. Cho, S.C. Lyu and C.J. Lee, "Charge transport properties of composites of multiwalled carbon nanotube with metal catalyst and polymer: application to electromagnetic interference shielding", Current Applied Physics, Vol.4, 2004, pp. 557-580

16.
H.C. Chen, K.C. Lee, J.H. Lin, "Electromagnetic and electrostatic shielding properties of co-weaving-knitting fabrics reinforced composites," Composites part A, Vol. 35, 2004, pp. 1249-1256 crossref(new window)

17.
Yang S., Lozano K., Lomeli A. Foltz H.D. and Jones R., "Electromagnetic interference shielding effectiveness of carbon nanofiber/LCP composites", Composites Part A, Vol 36, 2005, pp. 691-697 crossref(new window)

18.
S.Y. Lee, Y.S. Lim, I.H. Choi, D.I. Lee and S.B. Kim, "Effective Combination of Soft Magnetic Materials for Magnetic Shielding", IEEE Trans. on Magnetics, Vol.48, 2012, pp.4550-4553 crossref(new window)

19.
"MOST RECOGNIZED BRAND OF MAGNETIC SHIELDING ALLOY WORLDWIDE", MAGNETIC SHIELD Corp.

20.
G. Y. Han, J. S. Kim and D. G. Ahn, "A Study on Electromagnetic Interference Shielding Effectiveness of the Metal Powders and Nano Carbon black / Fiber Reinforced Epoxy composites", Journal of the Korean Society for Precision Engineering, Vol. 23, 2006, pp. 100-107

21.
William E. Feero, "Electric and Magnetic Field Management", American Industrial Hygiene Association Journal, Vol.54, 2010, p205-210