The Effect of the Coating Layer and the Doped Ion Concentration on the Dielectric Properties of SiO₂-PANI Electrorheological Fluid

Abstract:

The silicon dioxide particles are coated by polyaniline (PANI) under low temperature, and the doped ion concentration in PANI was adjusted by ammonia with different pH. The dielectric properties of PANI/SiO2 eletrorheological (ER) fluids are measured by impedance analyzer. The results indicated that the dielectric increment and relaxation frequency of ER fluid were enhanced after surface modification of SiO2, which are positive to the ER effect. Moreover, the pH of ammonia can change the relaxation frequency of ER fluid, which can improve the response ability of ER fluid to electric field.

• Periodical: Materials Science Forum (Volumes 663-665)
• Pages: 523-526
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.663-665.523
• Online since: November 2010
• Authors: Wei Zhou, Seng Liang, Yue Mei Sun
• Keywords: Dielectric Mismatch, Electrorheological Fluid, Interfacial Polarization

References

[1] Dj.M. Maric, P.F. Meier and S.K. Estreicher: Mater. Sci. Forum Vol. 83-87 (1992), p.119.

[2] M.A. Green: High Efficiency Silicon Solar Cells (Trans Tech Publications, Switzerland 1987).

[3] Y. Mishing, in: Diffusion Processes in Advanced Technological Materials, edtied by D. Gupta Noyes Publications/William Andrew Publising, Norwich, NY (2004), in press.

[4] G. Henkelman, G. Johannesson and H. Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D. Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000).

[5] R.J. Ong, J.T. Dawley and P.G. Clem: submitted to Journal of Materials Research (2003).

[6] P.G. Clem, M. Rodriguez, J.A. Voigt and C.S. Ashley, U.S. Patent 6, 231, 666. (2001).

[7] Information on.

[1] C. Decker: Macromol. Rapid Comm., Vol. 23 (2003), p.1067.

[2] B.T. Hong, K.S. Shin and D.S. Kim: J. Appl. Poly. Sci., Vol. 98 (2005), p.1180.

[3] Y. Morii, T. Shin, F. Matsukawa, K. Haruna and K. Teramoto: Electronics. Commun. Japn., Vol. 83 (2000), p. (2000)21.

[1] Y. Xu and R. Liang: J. Rheol. Vol. 35 (1991), p.1355.

[2] H. Kimura and A. Aikawa: J. Non -Newtonian Fluid Mech. Vol. 76 (1998), p.199.

[3] W. Zhou and K. S. Zhao: Colloids and Surfaces A. Vol. 317 (2008), p.10.

[4] T. Hao: Advances in Colloid and Interface Science Vol. 97 (2002), p.1.

[5] M. S. Cho and H. J. Choi: Macromol. Rapid commun. Vol. 23 (2002), p.713.

[6] V. Pavlinek and P. Saha: Physica A Vol. 353 (2005), p.21.