Acta Phys. -Chim. Sin. ›› 1995, Vol. 11 ›› Issue (01): 61-65.doi: 10.3866/PKU.WHXB19950112

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Studies on the Zeolite Electrorheological Fluids

Tang Yi, Peng-Ju-Fang, Gao Zi, Ye Ju-Feng, Shen Yan, Qiu Zhi-Yong, Zhou Lu-Wei   

  1. Department of Chemistry,Fudan University,Shanghai 200433|Lee T D Physics Laboratory and Department of Physics,Fudan University
  • Received:1993-12-29 Revised:1994-05-05 Published:1995-01-15
  • Contact: Tang Yi

Abstract:

The behavior of zeolite-based electrorheological fluids is influenced by the type and the number of cations, the pore-opening size and other structure properties of zeolites. It has been confirmed that the crystal polarization resulted from the migration of cations under high electric field is the foundation of the electrorheological effects of zeolites Y, M and A. For these types of zeolites, higher cation content and larger pore opening size are more favorable for obtaining good electrorheological properties. Different from all the other zeolites, NaZSM-5-based electrorheological fluid displays extraordinary strong static yield stress and very small leak current at high electric field. A new mechanism for the pentasil-type zeolite crystal polarization under high electric field, i.e., the framework deformation mechanism, has been suggested.

Key words: Electrorheological fluid, Zeolite, Framework deformation, Crystal polarization