Abstract:

To investigate the influence of process optimization of breaker drawing and prioritization scheme on the yarn quality of phenolic fiber，the drawing process was optimized on the basis of the phenolic fiber carded smoothly. By selecting A for draft multiple factor of the back zone, B for roller center distance (pro-zone×middle zone×back zone), C for the drawing speed as the research objects, each factor selected three levels, the index values were unevenness of textile strands and weight unevenness of Y311 type, by using orthogonal analysis, the influence of different indexes and optimization schemes on yarn quality was studied. Visual prioritization scheme was A3B1C1 that had be gotten according to unevenness of textile strands, visual prioritization scheme was A2B3C1 that had be gotten according to weight unevenness, and prioritization scheme had be calculated according to multiple factors matrix. Tested the quality of yarns spun with the same spinning process adopting these schemes by USTER tester. The results show that the optimized scheme is A2B1C1 by using multi factor matrix optimization in the first drawing.of phenolic fibers.

Key words: phenolic fiber, breaker drawing process, multiple factors matrix optimization, weight unevenness