| 摘要 |
PROBLEM TO BE SOLVED: To prepare a magnetic viscous fluid having an appropriate viscosity as a magnetic viscous fluid and being excellent in fluidity and dispersing property. SOLUTION: This magnetic viscous fluid comprises a dispersing medium and magnetic particles contained therein, where 0.5-5 wt%, based on the magnetic particles, of an oxidized polyethylene is contained therein and the magnetic particles comprise fine magnetic particles (A) having an average particle size of 5-15 nm and magnetic particles (B) having an average particle size of 0.3-10μm with the compounding ratio (by weight) of the magnetic particles (A) to the magnetic particles (B) of 0.8/100-15/100. COPYRIGHT: (C)2005,JPO&NCIPI |
