| 摘要 |
PURPOSE:To obtain a polysilazane which has both heat resistance and flexibility and gives a film excellent in mechanical strengths by optimizing the method for synthesizing the polysilazane and to obtain a heat-resistant insulated wire coated with an insulation film having heat resistance, flexibility, and good mechanical strengths. CONSTITUTION:A dihalosilane of the general formula: R1R2SiX2 (wherein R1 and R2 are each independently H, alkyl, alkenyl, cycloalkyl, alkylamino, aryl, or alkylsilyl) is subjected to ammonolysis at -20 deg.C or lower to give a polysilazane consisting of repeating units of the formula: -SiR1R2-NH-. The polysilazane is applied to a conductor and baked to give a heat-resistant insulated wire. |
