Preparation and performance analysis of fluoroether oil based magnetic fluid
Fe3O4 magnetic powder was prepared by chemical co-precipitation,and the surface of Fe3O4 magnetic powder was coated with perfluoropolyether carboxylic acid.The modified magnetic powder was used as the solid phase,and perfluoropolyether oil was used as the liquid phase to prepare a fluorinated ether oil-based magnetic fluid.The fluorinated ether oil-based magnetic fluid was analyzed through TEM,FTIR,XRD,laser particle size analyzer,and so on.The results indicate that the nano Fe3O4 magnetic powder has an inverse spinel structure and superparamagnetism,with a particle size of 20.2nm.The specific saturation magnetization of fluorinated ether oil-based magnetic fluid is 18.59emu g-1 and fluorinated ether oil-based magnetic fluid has certain acid and alkali resistance characteristics.
万方数据
维普
