PANI / MWNTs / EP Composite Microwave Absorbing Coatings Dielectrical and Microwave Absorbing Properties Analysis

Abstract:

In this paper, the polyaniline (PANI) coated multi-walled carbon nanotubes (MWNTs) was prepared in situ polymerization. Adding PANI/MWNTs into epoxy resin（EP）, we got PANI / MWNTs / EP composite microwave absorbing materials. Through testing permittivity 、permeability and reflection loss of materials, the paper showed the effect of PANI/MWNTS to the dielectrical and microwave absorbing properties of materials.The results showed： PANI/MWNTs had great effect on dielectrical and microwave absorbing properties of materials. But the imaginary permeability was close to 0. That indicated that it mainly consumed electromagnetic wave by dielectric loss. In 200-1000MHZ, materials had better absorbing property and lower reflection loss (-13.6).

• Periodical: Applied Mechanics and Materials (Volumes 303-306)
• Pages: 2477-2480
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.303-306.2477
• Online since: February 2013
• Authors: Chong Guang Zang, Xian Peng Cao
• Keywords: Absorbing Property, Electromagnetic Parameter, EP, MWNTs, Polyaniline

References

[1] FENG Yongbao, QIU Tai, SHEN Chunying, et al. Complex Permeability and Permittivity and Microwave Absorption Property of Barium Ferrite/EPDM Rubber Radar Absorbing Materials in 2-18GHz. IEEE, (2005).

DOI: 10.1109/apmc.2005.1606539

[2] Wu Mingzhong. The Current Situation and Development trend of the Radar Absorbing Materials. Magnetic Material and Device, 1997, 28(2): 26-30.

[3] Li Yinyuan, Li Guodong. The Physics of Ferrite. Beijing: Science Press, 1962: 19.

[4] Sung-Soo Kim, Dae-Hee Han. Microwave Absorbing Properties of Sintered Ni-Zn Ferrite. IEEE, 1994, 30(6): 4554-4556.

DOI: 10.1109/20.334146

[5] Fu Yongxiang, Lin Guangyi, Wang Chuangsheng. Study of the Ultrasound Dispersing Preparation of the Epoxy Resin/nano-SiO2 Composite Material. Application of the Engineering Plastic, 2009, 37(5): 5-8.

[6] Y. Koseoglu·M. Bay·M. Tan·A. Baykal·H. Sozeri·R. Topkaya·N. Akdogan. Magnetic and dielectric properties of Mn0. 2Ni0. 8Fe2O4 nanoparticles synthesized by PEG-assisted hydrothermal method. J Nanopart Res, 10. 1007/s11051-010-9982-6.

[7] M. R. Meshrama, *, Nawal K. Agrawala, Bharoti Sinhaa, et al. Characterization of M-type barium hexagonal ferrite-based wide band microwave absorber. Journal of Magnetism and Magnetic Materials, 2004: 207-214.

DOI: 10.1016/j.jmmm.2003.09.045

[8] Sreejith, V.; Radhakrishnan, S. Highly processible PANI /LDPE melt-blends: role of PEO as processing aid. International Conference on Polymers for Advanced Technologies, Thiruvananthapuram, India Dec. 2004: 15-17.