Study on the Preparation of Silica Adsorbed Rare Earth Hydroxide and the ER Performance

Abstract

Abstract: The silica adsorbed rare earth hydroxide [SiO₂·RE(OH)₃RE=La, Nd, Y] dispersed in a hydrocarbon-type oil are prepared and their ER effect under D.C.electric field are studied. A more obvious ER effect is observed in SiO₂·RE(OH)₃ than in SiO₂ for the ER fluid density of 80.0g/L. The properties of the fluids show a significant dependence on La(OH)₃, Nd(OH)₃ and Y(OH)₃ and their contents in fluids.

Key words: rare earth hydroxide, electrorheological fluid, ER performance

摘要： 用吸附了稀土氢氧化物的SiO₂（SiO₂·RE(OH)₃, RE=La, Nd, Y）与高速真空泵油（烃油）制成ER液，研究了它们在电场中表观粘度的变化，结果表明，分散颗粒含量为80.0g/L时，吸附RE(OH)₃后可以提高含SiO₂电流变液的电流变性能，RE(OH)₃不同或RE(OH)₃含量不同时对电流变性能有不同的影响。

关键词: 稀土氢氧化物, 电流变液, 电流变性能

CLC Number:

MA Shuzhen,LI Junran,XU Mingyuan,LI Shuxin. Study on the Preparation of Silica Adsorbed Rare Earth Hydroxide and the ER Performance[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

马淑珍, 李俊然, 许明远, 李淑新. 二氧化硅吸附稀土氢氧化物电流变液的制备和性能研究[J]. 北京大学学报（自然科学版）.

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Study on the Preparation of Silica Adsorbed Rare Earth Hydroxide and the ER Performance

二氧化硅吸附稀土氢氧化物电流变液的制备和性能研究

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