| 摘要 |
PURPOSE:To enhance electric viscosity effect by enabling the application of a high electric field by using fine semiconductor particles having a relatively large particle size and fine dielectric particles having a particle size smaller than that of the semiconductor particles to disperse them in an electric insulating liquid. CONSTITUTION:Fine semiconductor particles with a mean particle size of 1-100mum, for example, fine particles composed of a carbonaceous material with specific gravity of 3 or less and fine dielectric particles with a mean particle size of 0.1-3mum, for example, fine particles composed of BaTiO3 with a specific dielectric constant of 100 or more are dispersed in an electric insulating liquid, for example, silicone oil with resistivity of 109OMEGAcm or more to form an electric viscous fluid. In this case, the mean particle size of the fine dielectric particles is set to 30% or less of that of the fine semiconductor particles and the content thereof is set to 5-40% by wt. of all of the fine particles. |
