Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Electrorheological Properties of Aminated Polyacrylonitrile Susupension

아민화 폴리아크로니트릴 유도체 현탁액의 전기유변학적 특성

  • Choi, Ung-Su (Energymechanics Center, Korea Institute of Science and Technology) ;
  • Kim, Choong-Hyun (Energymechanics Center, Korea Institute of Science and Technology)
  • 최웅수 (한국과학기술연구원 에너지메카닉스센터) ;
  • 김충현 (한국과학기술연구원 에너지메카닉스센터)
  • Published : 2009.06.30
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Abstract

Aminated polyacrylonitrile as the new organic disperse phases of the anhydrous ER fluid has been synthesized and ER effect of the suspension composed of aminated polyacrylonitrile in silicone oil investigated. The suspension showed a typical ER response (Bingham flow behavior) upon application of an electric field. The shear stress for the suspension exhibited the dependence with a factor equals to 1.6 power on theelectric field. The current density and the conductivity of the of aminated polyacrylonitrile suspension increase with the electric field intensity and moreover the conductivity of the suspension is about 8 order of magnitude higher than that of the silicone oil. On the basis of the the results, aminated polyacrylonitrile suspension showed the ER flow behavior upon application of the electric field due to the polarizability of the branched amine polar group of the aminated polyacrylonitrile particles.

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References

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