Acta Scientiarum Naturalium Universitatis Pekinensis

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

MA Shuzhen1, LI Junran1, XU Mingyuan2, LI Shuxin2   

  • Received:1997-01-23 Online:1998-07-20 Published:1998-07-20


马淑珍1, 李俊然1, 许明远2, 李淑新2   

  1. 1北京大学化学系, 稀土材料化学及应用国家重点实验室, 北京, 10087; 2河北省保定师范专科学校化学系, 保定, 071051

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

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