| PERCOLATION TRANSITION IN ELECTRORHEOLOGICAL FLUIDS |
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| 引用本文： | 郝田,陈一泓,徐振淼,许元泽,黄畇. PERCOLATION TRANSITION IN ELECTRORHEOLOGICAL FLUIDS[J]. 高分子科学, 1994, 0(2): 97-105 |
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| 作者姓名： | 郝田 陈一泓 徐振淼 许元泽 黄畇 |
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| 作者单位： | Polymer Physics Laboratory，Institute of Chemistry，Academia Sinica，Beijing，100080，Polymer Physics Laboratory，Institute of Chemistry，Academia Sinica，Beijing，100080，Polymer Physics Laboratory，Institute of Chemistry，Academia Sinica，Beijing，100080，Polymer Physics Laboratory，Institute of Chemistry，Academia Sinica，Beijing，100080，Physics Department，Peking University，100871 |
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| 摘 要： | The electric conductivity, dynamic modulus and yield stress of the developed electrorheolo-gical fluid (ERF) are measured at different volume fraction and different electric field strengthusing a modified Rheometrics Mechanical Spectrometer (Model 605). The percolation theory isintroduced to explain electrorheological effect and found that the ERF′s have the similarpercolated network structure as that of other ordinary suspensions with a critical volume fractionvalue independent of electric field strength. A master curve of dimensionless modulus againstdimensionless volume fraction is obtained. which shows that the essence of ER phenomenonactually is one kind of the second ofder phase transition.
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| 收稿时间： | 1992-09-19 |
PERCOLATION TRANSITION IN ELECTRORHEOLOGICAL FLUIDS* |
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| HAO Tian,CHEN Yihong,XU Zhengmiao,XU Yuanze,HUANG Yun. PERCOLATION TRANSITION IN ELECTRORHEOLOGICAL FLUIDS*[J]. Chinese Journal of Polymer Science, 1994, 0(2): 97-105 |
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| Authors: | HAO Tian CHEN Yihong XU Zhengmiao XU Yuanze HUANG Yun |
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| Affiliation: | Polymer Physics Laboratory; Institute of Chemistry; Academia Sinica; Beijing; Physics Department; Peking University |
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| Abstract: | The electric conductivity, dynamic modulus and yield stress of the developed electrorheolo-gical fluid (ERF) are measured at different volume fraction and different electric field strengthusing a modified Rheometrics Mechanical Spectrometer (Model 605). The percolation theory isintroduced to explain electrorheological effect and found that the ERF′s have the similarpercolated network structure as that of other ordinary suspensions with a critical volume fractionvalue independent of electric field strength. A master curve of dimensionless modulus against dimensionless volume fraction is abtained,which shows that the essence of ER phenomenon actually is one kind of the second ofder phase transition. |
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| Keywords: | Electrorheological Fluid Suspension Critical volume fraction Percolation |
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