To provide a method for producing highly heat-resistant polyimide fine fiber capable of producing the same having higher heat resistance as compared to conventionally known fiber, with excellent solution stability and spinnability by using a polyimide solution obtained by dissolving the polyimide in an organic solvent, in an electrostatic spinning method in which nanosized fine fibers can be obtained, and to provide a method for producing a nonwoven fabric comprising the polyimide fine fiber.
The highly heat-resistant polyimide fine fiber is obtained by using a polyimide solution obtained by dissolving in an organic solvent a polyimide having a specific chemical structure composed of an acid component such as 2,3,3',4'-biphenyltetracarboxylic acid dianhydride, 3,3',4,4'-biphenyltetracarboxylic acid dianhydride, pyromellitic acid dianhydride, or 3,3',4,4'-diphenylmethanetetracarboxylic acid dianhydride, and toluene diisocyanate or diamine components such as diaminotoluene, and then using an electrospinning of the solution.
KODA MASAFUMI
YAMAGUCHI HIROAKI
OYAMA TAKAHARU
| JP2008002011A | 2008-01-10 | |||
| JP2006176907A | 2006-07-06 | |||
| JP2002012688A | 2002-01-15 | |||
| JPS60215812A | 1985-10-29 | |||
| JP2010180494A | 2010-08-19 |
| WO2009099109A1 | 2009-08-13 |