| 石油基电流变液中链结构的显微观察 |
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| 引用本文： | 刘汉英,董鹏,李广南,谢振全.石油基电流变液中链结构的显微观察[J].实验力学,2001,16(1):77-85. |
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| 作者姓名： | 刘汉英 董鹏 李广南 谢振全 |
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| 作者单位： | [1]石油大学重质油加工国家重点实验室，北京102200 [2]石油大学重质油加工国家重点实验室， |
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| 摘 要： | 利用显微观察技术连续记录了直流与交流电场下石油基电流变液中的显微结构变化，比较了两种电场下成链、链生长、断链的差异，这种差异包括颗粒的运动、链的形状以及断链时有无崩裂现象，并且分析了造成这种差异的原因，认为交流场下出现的链崩裂现象是由约翰逊-拉贝克效应造成的，通过石油基电流变液在直流、20Hz、50Hz三种电场条件下显微链结构的对比，得出结论横跨两极的链总的横截面积是影响剪应力大小的一个重要因素。
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| 关 键 词： | 电流变液 纤维链 直流场 交流场 石油基 显微观察 |
| 文章编号： | 1001-4888(2001)01-0077-09 |
| 修稿时间： | 1999年11月8日 |
Microscopic Observation
for the Microstructure of Petroleum-based Electrorheological Fluid |
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| LIU Han ying,DONG Peng,LI Guang nan,XIE Zhen quan.Microscopic Observation
for the Microstructure of Petroleum-based Electrorheological Fluid[J].Journal of Experimental Mechanics,2001,16(1):77-85. |
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| Authors: | LIU Han ying DONG Peng LI Guang nan XIE Zhen quan |
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| Abstract: | The microstructures for electrorheological fluid (ERF) composed of petroleum mesophase pitch particles and silicone oil under direct and alternative current fields were compared. The computer record of the consecutive courses of the formation, development and breakage of the chain structure under the two electric fields was given. Different shape, length and quantity of chains in ERF were explained. Chains burst phenomenon in AC field was explained by Johnsen Rahbeck effect. A conclusion, that the total cross sectional area of spanning fiber chains is one of the important factors which influence the shear strength, was drawn through comparison. |
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| Keywords: | electrorheological fluid direct current field alternating current field microscopic observation |
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