The results showed that the coagulation bath temperature, concentration and apparent minus stretch had their critical values when other coagulation conditions remained unchanged. The properties of as-spun fibers and precursors were decreased when those parameters were lower or higher than the critical values. 结果表明:在其他凝固参数不变时,凝固浴温度、浓度及表观负拉伸均存在各自的临界值,低于或超过此临界值,初生纤维及原丝的性能均下降;
The effects of spinning dope temperature, coagulation bath condition, negative stretch ratio of spinneret, total shrinkage, total draw ratio and spinning velocity on acrylic fiber quality and production stability were discussed. 讨论了纺丝原液温度、凝固浴条件、喷丝板负拉伸率、总收缩率、总拉伸倍数、纺丝速度对细旦腈纶质量和生产稳定性的影响。