物理化学学报 >> 1995, Vol. 11 >> Issue (01): 61-65.doi: 10.3866/PKU.WHXB19950112

研究论文 上一篇    下一篇

沸石电流变液材料的研究

唐颐, 彭菊芳, 高滋, 叶聚丰, 沈岩, 邱志勇, 周鲁卫   

  1. 复旦大学化学系|a物理系|李政道物理学综合实验室|上海 200433
  • 收稿日期:1993-12-29 修回日期:1994-05-05 发布日期:1995-01-15
  • 通讯作者: 唐颐

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

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摘要：

系统地研究了沸石的由离子类型、数目、骨架的孔道大小和结构特性对沸石电流变液性能的影响. 证实了阳离子在电场中的迁移所引起的晶粒极化是Y，A和M等沸石电流变特性的基础，指出了较大的孔径和具有足够多易迁移的阳离子是该类沸石具有较好电流变性的的前提．根据NaZSM－5沸石在高电场中与其它沸石表现不同，具有屈服应力大而漏电流小的特点，提出了沸石晶粒极化还可能存在的另一种新的晶格变形机理．

关键词: 电流变液, 沸石, 晶格变形, 晶体极化

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