| 摘要 |
PURPOSE:To provide an insulating electric wire having excellent heat resistance of 400 deg.C or above, good electric characteristics such as insulation property, and good humidity resistance by using a heat-resistant insulating paint mainly made of silicone resin and containing preset quantities of polyimide resin and an inorganic filler. CONSTITUTION:A braid 6 or spiral winding 5 made of inorganic fibers is supplied on a backing electric wire as the outermost layer, a heat-resistant insulating paint is coated on it to form a heat-resistant, humidity-resistant insulating electric wire, and a tape-wound layer 4 consists of a mica tape 2 and a polyimide tape 3. A film tape filled with only polyimide or an inorganic filler is used for the tape 3. The heat-resistant insulating paint is mainly made of silicone resin, and polyimide resin having a solid of 10-65 pts.wt. and an inorganic filler of 10-200 pts.wt. are contained against a silicone resin solid of 100 pts.wt. The electric wire usable at the high temperature of 400 deg.C or above is obtained, it has excellent humidity resistance at the high temperature of 400 deg.C or above, and its binding property is not reduced. |
