| abstract |
(57) [Problem] To provide a flame-retardant magneto-rheological fluid having excellent flame retardancy while maintaining magneto-rheological properties. SOLUTION: This is a magnetic viscous fluid comprising a liquid dispersion medium, magnetic particles, a flame retardant and a dispersant for a flame retardant, wherein the sum of the mixing amounts of the magnetic particles and the flame retardant is such that the liquid dispersion medium, the magnetic particles And a flame-retardant magneto-rheological fluid which is 50 to 90% by weight of the sum of the amounts of the flame retardants. |