聚乙烯醇基自形成磁性液体的零场粘滞特性  

Viscosity of Self-formed Magnetic Fluids of Polyvinyl Alcohol Carrier in Zero Magnetic Field

作　　者：杨国凤[1] 李建[1] 白浪[1] 黄彦[2] 

机构地区：[1]西南大学物理学院,重庆400715 [2]南昌航空工业学院测控系,南昌330063

出　　处：《西南师范大学学报（自然科学版）》2006年第2期55-59,共5页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：重庆市自然科学基金资助项目(SWNUF2004005)西南大学发展基金资助项目(CSTC.2005BB4106).

摘　　要：用共沉淀-酸蚀法,制得了稳定的自形成聚乙烯醇(PVA)基CoFezO4的磁性液体,测量了基液粘度随聚乙烯醇体积浓度(φs)的变化,磁性液体随磁性微粒体积浓度(φv)不变而φs变化和φs不变而φv变化下零磁场粘滞度．比较在不同条件下的实验结果,研究基液和磁性微粒体积分数φv对磁性液体粘滞特性的影响,并解释了实验所得到的η～φ关系．By using the method of coprecipitated and acid erode method, self-formed Polyvinyl alcohol （PVA）carrier of CoFe2O4 magnetic fluid is produced. The authors measured carrier＇s viscosity when polyvinyl alcohol liquid＇s concentration（Фs） is variable, they also measured the viscosities of magnetic fluid in zero magnetic field when Фs is certain and magnetic particle＇s concentration（Фv） is variable or Фv is certain and Фs is variable. Compared the results from different occations, the authors studied the carrier and magnetic particle＇s affections on the magnetic fluid＇s viscosity. Based on the statics, the phenomena and η-Ф curves of the experiment were explained.

关 键 词：磁性液体 粘滞特性 絮凝体 

分 类 号：O482.5[理学—固体物理]