| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyamic acid nonwoven fabric, to provide a polyimide nonwoven fabric, and to provide methods for producing those. <P>SOLUTION: This nonwoven fabric is formed from fibers comprising a polyamic acid and having an average fiber diameter of 0.001 to 1 μm. The method for producing the nonwoven fabric comprises producing a solution from the polyamic acid and a volatile solvent, spinning the obtained solution by an electrostatic spinning method, and then accumulating the obtained polyamic acid fibers on a collecting substrate. A nonwoven fabric comprising a polyimide. The method for producing the polyimide nonwoven fabric is characterized by imidizing the polyamic acid fiber nonwoven fabric. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
