| 摘要 |
Provided is a method for producing a polyimide film on which a texture having an irregular profile is formed on the surface. A method for producing a polyimide film in which a first polyimide precursor solution containing a polyamic acid and a solvent is cast or applied onto a support and heated, wherein the first polyimide precursor solution contains an organic material different from the polyamic acid and the solvent, the volatilization temperature of the organic material is lower than the volatilization temperature of the polyimide obtained by imidization of the polyamic acid, the maximum temperature during heating is at or above the volatilization temperature of the organic material, and at or below the volatilization temperature of the polyimide, and in the process of heating the first polyimide precursor solution cast or applied onto the support and forming a polyimide, the organic material experiences phase separation from the polyimide precursor phase, and is eliminated from the polyimide film through thermal decomposition or vaporization due to the heating. |
