Author:
Nie Zhengwei,Chen Ye,Bai Kangqiao
Abstract
Polyacrylonitrile (PAN)-based carbon fibers have high strength, high elongation, and low volume fraction of voids. The precursors of PAN-based carbon fibers are produced by wet or dry jet spinning techniques. To obtain high-quality PAN precursors, the flow field inside a redesigned rectangular spinneret was investigated in this work. The influence of the perforated area ratio of outer holes to inner holes and the fillet diameter of corner holes on the axial velocity distribution before the spinneret plate was discussed. An orthogonal experiment was carried out to acquire optimized structural parameters of the rectangular distributor. After the optimization, the CV of the axial velocity on the observation cross-section decreases from 62.26% to 47.61%.
Subject
General Physics and Astronomy