酞菁钴/铁纳米填充母粒组成的磁流变液性能  

Properties of Magnetorheological Suspension for Filled Clusters of Cobalt -Phthalocyanine/Iron Nanoparticles

作　　者：龚荣洲[1] 官建国[1] 袁润章[1] 

机构地区：[1]武汉工业大学材料复合新技术国家重点实验室,武汉430070

出　　处：《Chinese Journal of Chemical Physics》2000年第4期508-512,共5页化学物理学报（英文）

基　　金：国家自然科学基金项目!(No.29674021和29904005);武汉工业大学材料复合新技术国家重点实验室开放基金资助。

摘　　要：采用有机／无机原位（ｉｎ　ｓｉｔｕ）复合方法制备得出酞菁钴／铁纳米填充母粒，与甲基硅油组成磁流变液（ＭＲＳ）。ＭＲＳ的附加动态剪切应力（△τ）与分散介质浓度、外加磁场强度呈正比例关系；剪切速率对△τ的影响表明磁致流变为链状结构特征；△τ对温度不敏感；ＭＲＳ对外加磁场有可逆的开／关变化特征，无记忆效应，磁流变响应时间小于０．１ｓ。Magnetorheological suspension (MRS) consists of methylic silicone oil and filled clusters of cobalt - phthalocyanine/Iron (CoPc/Fe) nanoparticles, and the filled clusters have been obtained using method of composite in situ. Exhibited dynamic shear stress of the MRS induced by external magnetic field is in direct-ratio relation with strength of external magnetic field and concentration of the filled clusters in the MRS. The relation of shear stress with shear rate shows that the filled clusters of CoPc/Fe nanoparticles have arranged in chain by external magnetic field in the MRS. And it is little that the shear stress is affected by change of temperature. Response of the MRS is superior reversibility of changes in viscosity induced and the response time is faster than 0.1s by external magnetic field.

关 键 词：磁流变液 响应时间 酞菁钴 铁 纳米填充母粒 

分 类 号：O37[理学—流体力学]