| 摘要 |
PURPOSE:To obtain a fine coil-shaped polimide wire body excellent in heat resistance. CONSTITUTION:A polyimide precursor solution is prepared and the fine stream thereof is allowed to flow in a poor solvent of a polyimide precursor to precipitate and form the coil-shaped wire body composed of the polyimide precursor in the poor solvent. Next, the formed coil-shaped wire body composed of the polyimide precursor is taken out of the solvent by an approximate means, for example, suction filtering and subsequently dried. Finally, the dried coil- shaped polyimide precursor wire body is cured to make it possible to obtain a coil-shaped polyimide wire body excellent in heat resistance and elasticity. |
