ER Effect of PMMA Wrapped Alumina-Siloxane Gel Doped with Rare Earths
来源期刊：JOURNAL OF RARE EARTHS2002年第1期
论文作者：李幼荣 周兰香 严长浩 张明 邱关明
Key words：rare earths; water glass; PMMA wrapped alumina-siloxane gel; suspensions; electrorheological effect;
Abstract: PMMA wrapped alumina-siloxane gel was obtained by using poly (methyl methacrylate) (PMMA) to wrap alumina-siloxane sol which was made from water glass, aluminum nitrate and α-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.
李幼荣1，周兰香1，严长浩1，张明1，邱关明2
(1.Department of Chemistry,Yangzhou University, Yangzhou 225002, China;
2.Changchun College of Optics & Fine Mechanics, Changchun 130022, China)
Abstract:PMMA wrapped alumina-siloxane gel was obtained by using poly (methyl methacrylate) (PMMA) to wrap alumina-siloxane sol which was made from water glass, aluminum nitrate and α-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.
Key words:rare earths; water glass; PMMA wrapped alumina-siloxane gel; suspensions; electrorheological effect;
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