Patent ID: 9476147
Filing Date: 2016-10-25
CPC Classification: B05D,D01D,D01F,D02J,D10B

Claim Text:
1. A gel spinning process for producing a PAN-based precursor fibre consisting of the following steps: a) mixing an anhydrous PAN powder and a solvent in a weight ratio from 5:100 to 20:100, followed by heating at a temperature between 70° C. and 110° C. until the PAN powder is completely dissolved to obtain a solution; b) adding a small-molecule gelling agent to the solution from step a) to obtain a mixture, said small-molecule gelling agent being in an amount of from 2% to 5% by weight of the solution, and the mixture being mechanically stirred for 1 hour to obtain a uniformly mixed spinning solution; c) transferring the spinning solution from step b) to a wet spinning machine and spinning by using conventional wet spinning process for producing PAN based precursor fibre, thereby obtaining the PAN-based precursor fibre.