The Preparation Methods,Characteristics and Application of Ferrofluids Wang Maolan, Hu Chunhua#, Luo Xin (The Applied Chemistry Department of East China Institute of Technology, Wuzhou 344000) (# Institute of Environmental Science and Engineering, Nanchang University. Nanchang 330029) Abstract The composition and the characteristics of ferrofluids, as well as its sorting are introduced. It is constituted of magnetic nanoparticle, carrier liquid and active agent. Its characteristics have superparamagnet, magneto-light effect and magneto-hot effect. The preparation methods of ferrofluids and its application to sealing, grinding, lubricating, ore dressing, damping, sensor, loudspeaker and biomedicine etc. are also discussed in detail. Its application prospect is narrated, too. Key words Ferrofluids, Characteristics, Preparation, Application 磁流体的制备、性质及其应用 王毛兰 胡春华# 罗 新 (东华理工学院应用化学系 江西抚州 344000 #南昌大学环境科学与工程学院 南昌 330029) 摘 要 概括介绍了磁流体的组成、性质及其分类。磁流体主要由纳米磁性粒子、载液和表面活性剂三部分组成，它具有超顺磁性、磁光效应、磁热效应等特性。重点阐述了磁流体的制备方法及其在密封、研磨、润滑、选矿、阻尼、传感器、扬声器、生物医学等方面的应用。对磁流体的应用前景也进行了简单介绍。 关键词 磁流体 特性 制备 应用 王毛兰 女，24 岁，硕士生，现从事纳米磁性材料方面的研究。 2003-07-14 收稿，2003-10-20 接受 (PDF全文下载c04062)