METHOD FOR PRODUCTION OF AROMATIC POLYIMIDE NANOFIBER BASED MATERIAL Russian patent published in 2017 - IPC D01F6/00 B82B3/00 B29C47/00 

FIELD: chemistry.

SUBSTANCE: method is described for production of a polyimide nanofiber based material including electrospinning of polyamide acid solution in the solvent in which the solution containing not more than 12 wt % of polyamide acid in aprotonic solvent is used to obtain the film by the method of electrospinning through split draw die to the support; the film is removed from the support and dissolved, in the quantity ensuring polyamide acid content in the solution of 12-20 wt %, in the mixture aptoronic solvent : benzoid solvent with benzoid solvent content being 20-70 vol.%; the solution is supplied at room temperature through electrode- draw die to electric field with voltage of 15-35 kV; the material deposited on the anode is subjected to thermal treatment at a temperature of 370-420°C for 60 min; the target product consists of aromatic polyimide nanofibers with diameter of 50-700 nm and has decomposition temperature higher than 500°C in the inert medium in mixture.

EFFECT: production of aromatic polyimide nanofiber based material using the method of electrospinning of polyamide acid at room temperature.

6 dwg, 5 ex