Patent ID: 11879519
Assignee: YAMASHITA RUBBER CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  H | IPC F

Claim 0:
1. A magnetorheological fluid comprising:
a magnetic material;
a medium to allow the magnetic material to be dispersed therein;
a dispersant to disperse the magnetic material within the medium while forming a magnetic material holding structure to hold the magnetic material; and
a reinforcing agent to reinforce the magnetic material holding structure, wherein
an amount of the magnetic material is 25 wt % to 75 wt % relative to a sum of the medium and the magnetic material,
an amount of the medium is 25 wt % to 75 wt % relative to the sum of the medium and the magnetic material,
an amount of the dispersant is 0.5 wt % to 6 wt % relative to the sum of the medium and the magnetic material, and
an amount of the reinforcing agent is 5 wt % to 300 wt % relative to a weight of the dispersant,
wherein the dispersant comprises a rheology control agent,
wherein the dispersant comprises silica,
wherein the magnetic material holding structure has a network structure, and
wherein the silica has a primary particle size of greater than 10 nm.