| 摘要 |
PURPOSE:To obtain a fluid which undergoes a rapid reversible viscosity change according as the applied voltage, is stable over a long period of time, and has a high thickening effect, by mixing a dispersion medium comprising an electrical insulating liquid with dispersoids comprising porous solid particles, an acid, and a polyhydric alcohol. CONSTITUTION:An electroviscous fluid consisting of a dispersion medium comprising an electrical insulating liquid, dispersoids comprising porous solid particles, an acid, and a polyhydric alcohol, and optionally a dispersant. Examples of the electrical insulating liquid include a naphthenic mineral oil, a paraffinic mineral oil, an alkylene glycol, a silicone, and a synthetic hydrocarbon. Example of the porous solid particles include particles of silica gel, a water-containing resin, a diatomaceous earth, alumina, and cellulose. Examples of the acid include an inorganic acids, such as sulfuric acid and phosphoric acid, and organic acids, such as acetic acid and oxalic acid. Examples of the polyhydric alcohol include ethylene glycol, glycerin, and butanediol. |
