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The Effect of Surfactant on the Electrorheological Properties of Phosphoric Ester Cellulose ER Fluids

인산 에스테르 셀룰로오스 ER 유체의 전기유변학적 특성에 대한 계면활성제의 영향

  • 안병길 (한국과학기술연구원 Tribology Research Center) ;
  • 최웅수 (한국과학기술연구원 Tribology Research Center) ;
  • 권오관 (한국과학기술연구원 Tribology Research Center)
  • Published : 1999.09.01

Abstract

The electrorheological (ER) behavior of suspensions in silicone oil of phosphoric ester cellulose particles (average particle size : 18$\pm$1${\mu}{\textrm}{m}$) coated with octadecylamine ( $C_{18}$ $H_{37}$ N $H_2$) as surfactant was investigated at room temperature. For development of anhydrous ER suspension using at real application, it should be researched how can reduce deposition of ER particles in ER suspension. Anhydrous ER suspensions mixing with phosphoric ester cellulose particles coated with octadecylamine were measured. As increasing the coating concentration of octadecylamine, not only analysis of electrical properties such as dielectric constant, current density and electrical conductivity but also rheological properties of ER suspensions were studied. From the experimental results, coating concentration of surfactant had large influence to ER properties of anhydrous ER suspension. Current density, conductivity and electrorheological effect ($\tau$/$\tau$$_{0}$) of ER suspension were linearly reduced with increasing the coating concentration of octadecylamine. But ER suspensions dispersed the phosphoric ester cellulose particles coated with octadecylamine showed reducing deposition of ER particles and could be redispersed easily.

Keywords

References

  1. J. of Physics v.20 Induced Fibration Suspension Winslow, W. M.
  2. U.S. Patent 2661596 Wonslow, W.M.
  3. Proceedings of Second International Conference on ER fluid Orientation of Particle Chains in AC Electric Fields Jones, T. B.
  4. The Japan Society of Mechanical Engineers v.59 no.562 Theoretical and Experimental Study on ERF's Yield Stress Tetsuo Miyamoto;Motonori Ota
  5. Proceedings of the Fourth International Conference on ER fluid A Conduction Model of Electrorheological Effect Felici, N.;Foulc, J. N.;Atten, P.
  6. ERMR'97, International Conference on ERF, MRS and Their Applications Two Types of Mechanisms of Electrorheological Effect in Polymer Blend H., Doi M.;Ishibashi, Y.
  7. J. of KSTLE v.14 no.2 인산처리 셀룰로오스를 첨가한 비수계 ER 유체의 전기 유변학적특성 안병길;최웅수;권오관;문탁진
  8. J. of KSTLE v.14 no.3 인산 에스테르 반응 셀룰로오스 미립자의 활성화가 비 수계 ER 유체의 전기유변학적특성에 미치는 영향 안병길;최웅수;권오관;문탁진
  9. Langmuir v.6 Materials and mechanism in eletrorheology Block, H.;Kelly, J. P.;Qin, A.;Watson, T.
  10. J. Phys. Chem. v.66 Schwarz, G.