| 摘要 |
PURPOSE:To realize the forming of a heat-proof insulated electric wire having an excellent heat-proof ability and a highly excellent insulating ability as well by coating a base material for an electric wire with ceramics having a silicon nitride quality or its precursor body which is induced from polysilasane and has a specific carbon containing ratio. CONSTITUTION:A heat-proof insulated electric wire is formed by coating a base material for an electric wire with ceramics having a silicon nitride quality or its precursor body which is induced from polysilasane and has carbon containing ratio of not more than 5weight%. In order to manufacture the electric wire coated with the ceramics having the silicon nitride quality or its precursor body, the polysilasane is used as a coating material, and this is coated with the base material for the electric wire, and after a polysilasane coat is formed on the surface of the electric wire, heat treatment is carried out on this. If the polysilasane is in liquid condition, after this is coated on the surface of the base material of the electric wire, it is kept at a temperature between the normal temperature and about 400 deg.C, preferably at 80-200 deg.C for a prescribed time under the atmosphere of air, inactive gas or reducing gas. Thereby, a coat consisting of solid state polysilasane having a cross-linking structure can be obtained. |
