甲壳胺与蓖麻油组成的悬浮体系的电流变性能研究  

Study on Electrorheological Properties of a Suspension Containing Chitosan and Castor Oil

作　　者：张建华[1] 陶德华[1] 张直明[1] 

机构地区：[1]上海大学机械电子工程与自动化学院,上海200072

出　　处：《上海大学学报（自然科学版）》2000年第4期311-314,共4页Journal of Shanghai University:Natural Science Edition

基　　金：上海市教委青年基金资助项目!( 80 2 95 0 )

摘　　要：制备了甲壳胺～蓖麻油电流变 (ER)悬浮液 ,研究了外加电场强度 (E)、剪切速率 (γ)大小及体颗粒浓度 (C)对甲壳胺～蓖麻油电流变液性能的影响 .结果表明 ,随外加电场强度的增加 ,ER液的表观剪切应力增大 ;随剪切速率的提高 ,ER液的表观剪切应力反而减小 .ER液中存在产生 ER效应的临界颗粒浓度 ,只有当固体颗粒浓度高于临界值时 ,ER液的表观剪切应力才有明显增大 .An electrorheological(ER) fluid containing chitosan particles in castor oil was prepared. Factors such as applied electric field strength, shear rate and particle concentration influencing the ER fluids' properties were studied. The results showed that the apparent shear stress increased with the increasing applied field strength and particles concentration respectively, while it decreased with the increasing shear rate. In ER fluids, particle concentration has critical value. Only above the critical value, the apparent shear stress increased obviously.

关 键 词：悬浮液 甲壳胺 电流性能 蓖麻油 

分 类 号：O361.4[理学—流体力学]