A method for isolating polymers from solution in spinning PAN precursor carbon fibers FOR

摘要

Method polymer based on polyacrylonitrile allocation of 15-22 vol.% Solution in forming PAN precursor for producing carbon fibers, comprising the proper selection of the polymer from its solution without precipitating, and then removing the solvent by blowing an air jet fiber, characterized in that the proper selection polymer from the solution to obtain svezhesformovannogo fiber having a residual solvent content not higher than 1% is carried out under mechanical stress at a temperature below the temperature to singing solvent at 150 ° C, at 8-12 times the extract.