ER effect of PMMA wrapped alumina-siloxane gel doped with rare earths

作者：Qiu GM; Zhou LX; Zhang M; Li YR; Yan CH

来源：Journal of Rare Earths, 2002, 20(1): 23-27.

• rare earths
• water glass
• PMMA wrapped alumina-siloxane gel
• suspensions
• electrorheological effect

PMMA wrapped alumina-siloxane gel was obtained by using poly (methyl methaerylate) (PMMA) to wrap alumina-siloxanc sol which was made from water glass, aluminum nitrate and alpha-methacrylic acid. Meanwhile, rare earth ions were used to dope in the course of reaction, and stable suspensions was produced by putting PMMA wrapped microcapsule powder doped with rare earths into methy-silicon oil. It is found that its electrorheological (ER) effect improves strikingly after loading electric field. At a certain concentration, the immediate viscosity increases from 95 to 178 Pa.s compared to the system without doping.

• 出版日期2002-2
• 单位扬州大学