| 摘要 |
PURPOSE:To improve thickening effect, long-term dispersion stability of solid particles and durability by incorporating an electrically insulating fluid, a specified porous particle, a polarization promoter and a dispersing agent. CONSTITUTION:The title fluid is obtd. by compounding an electrically insulating fluid (A) with a viscosity at 40 deg.C of 5-300cSt (e.g. alkylbenezene), 0.1-50wt.% porous solid particle (B) consisting of a silica gel with a specific surface area of 250m<2>/g or larger, a micropore vol. of 1ml/g or larger and a particle size of 10um-200mum, a dispersing agent (C) with a wt. ratio to the ingredient B of 0.5-5.0 (e.g. succin-imide), a polarization promoter (D) in a content of 1-10wt.% based on the ingredient B (e.g. triethylene glycol) and, if necessary, an acid, a salt (a base ingredient), an anti-oxidant, an anti-corrosive agent, anti-wearing agent, an extreme-pressure agent, a defoamer, etc. |
