超高密度水基Fe<sub>3</sub>O<sub>4</sub>磁流体的制备及其性能表征 -- 西北工业大学,2014,32(1):35-39
论文:2014,Vol:32,Issue(1):35-39
引用本文:
邵杰, 黄英. 超高密度水基Fe3O4磁流体的制备及其性能表征[J]. 西北工业大学
Shao Jie, Huang Ying. Preparation and Characterization of Water-Based Ultra-High Density Fe3O44 Magnetic Fluid[J]. Northwestern polytechnical university

超高密度水基Fe3O4磁流体的制备及其性能表征
邵杰, 黄英
西北工业大学 理学院 应用化学系, 陕西 西安 710072
摘要:
超高密度磁流体在航天、密封、矿物浮选领域有广阔的应用前景。采用化学共沉淀法经分离基液制备了超高密度Fe3O4水基磁流体。以XRD、TEM、振动样品磁强计(VSM)、旋转黏度计等对样品进行了表征。研究表明:高密度磁流体Fe3O4为反尖晶石型结构,平均粒径约15 nm,其磁饱和黏度值、黏度变化域值、饱和磁化强度分别可达5.64 Pa·S、0.82~5.64 Pa·S、51.2 emu·g-1,分别是普通磁流体的564倍、60倍、7倍;饱和磁化强度随磁微粒含量的变化呈显著的线性相关性;当温度在20~80℃变化时,超高密度磁流体密度在4.985 2~4.982 7 g·cm-3,且与温度的变化基本无关。
关键词:    超高密度磁流体    Fe3O4    磁饱和强度    黏度   
Preparation and Characterization of Water-Based Ultra-High Density Fe3O44 Magnetic Fluid
Shao Jie, Huang Ying
Department of Applied Chemistry, School of Natural and Applied Sciences, Northwestern Polytechnical University, Xi'an 710072, Chin
Abstract:
Ultra-high density magnetic fluid has broad application prospects in the field of aerospace,sealing and mineral flotation. We using the method of chemical co-precipitation,prepared ultra-high density Fe3O4magnetic fluid by separating redundant base solution. The samples were characterized by XRD,TEM,VSM and rotary viscometer. Results and their analysis showed preliminarily that:(1) the Fe3O4nanoparticles in the Ultra-high density magnetic fluid were inverse spinel structure with average particle size of 15 nm;(2) the viscosity in the saturated magnetic condition,viscosity range and saturation magnetization of the ultra-high density magnetic fluid achieved 5.64 Pa·S,0.82~5.64 Pa·S,and 51.2 emu·g-1,and they are respectively 564 times,60 times,and 7 times those of the ordinary magnetic fluid; There is a significant linear correlation between the change of saturation magnetization and the magnetic particle content;(3) when the temperature changed from 20℃ to 80℃,the density of the ultra-high density magnetic fluid changed merely from 4.985 2 g·cm-3to 4.982 7 g·cm-3.
Key words:    ultra-high density magnetic fluid    Fe3O4    saturation magnetization    viscosity    nanoparticles    parameterization   
收稿日期: 2013-10-18     修回日期:
DOI:
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作者简介: 邵杰(1988-),西北工业大学硕士研究生,主要从事磁性液体研究。
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