| abstract |
(57) [Summary] [Structure] Non-hydrous composite particles obtained by coating a semiconductor and / or an insulator on particles made of an organic polymer having an amino group and / or an oxygen-containing functional group on the surface are electrically insulating media. An electrorheological fluid composition dispersed therein. [Effect] It can be easily manufactured, has excellent adhesion between the particles and the coating layer, has a high electrorheological effect, has excellent storage stability, heat resistance and durability, has little scratching property, and has a low environmental temperature and Provided is an electrorheological fluid composition which is not affected by humidity, has a stable current value, and consumes less power. |