Electroviscous fluids containing semiconducting particles and dielectric particles

摘要

Disclosed herein is an electroviscous fluid comprising an electrical insulating liquid and particles dispersed therein, said particles being composed of semiconducting particles having a weight average particle size of 1 to 100 mu m and dielectric particles having a weight average particle size of 1 to 3 mu m, the weight average particle size of the dielectric particles being not more than 30% of that of the semiconducting particles, the amount of the dielectric particles being 5 to 40 vol % based on the total particles, and the amount of the particles in the whole fluid being 10 to 60 vol %.