The effect of blending particles with different conductivity on electrorheological properties
作者:
Ryo Sakurai,
Howard See,
Tasuku Saito,
期刊:
Journal of Rheology
(AIP Available online 1996)
卷期:
Volume 40,
issue 3
页码: 395-403
ISSN:0148-6055
年代: 1996
DOI:10.1122/1.550750
出版商: The Society of Rheology
关键词: Electrorheology;Dielectric permittivity;Particle blend;Cole‐Cole plot;Suspension, conducting particles;SUSPENSIONS;ELECTROHYDRODYNAMICS;FLOW STRESS;DIELECTRIC PROPERTIES;CARBONACEOUS MATERIALS;ELECTRIC CONDUCTIVITY;RHEOLOGY
数据来源: AIP
摘要:
We have carried out a set of experiments using anhydrous carbonaceous particles to determine the effect on the electrorheological properties of blending particles of different conductivities. We find that there is a significant dip in the shear stress under an electric field as the concentration of higher conductivity particles is increased, showing that uniformity of the electrical properties among the particles is a most important factor in achieving optimum electrorheological fluid (ERF) performance. We explain this behavior by a simple model based on the strength of particle–particle interactions. Measurements of the dielectric permittivity show that the α parameter of the Cole–Cole expression provides an excellent way to express the degree of uniformity in the electrical properties. This gives a convenient method to evaluate the potential performance of an ERF.
点击下载:
PDF
(184KB)
返 回