细旦腈纶的生产

研究细旦腈纶的纺丝工艺条件。并在纺丝线上进行试生产。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。工业化试验表明:纺制0.89 dtex细旦腈纶的主要工艺条件为,纺丝原液温度74~76℃,喷丝板负拉伸率70％,总收缩率23%~25％,总拉伸倍数15,纺丝速度155m/min以及适当的凝固浴条件。

Production of fine denier acrylic fibers

The spinning process conditions of fine denier acrylic fiber were studied. And the trial production was conducted on a spinning line. 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. The commercial experimental results showed that the main process conditions of 0. 89 dtex fine denier acrylic fiber were as followed; spinning dope temperature 74 -76℃ , negative stretch ratio of spinneret 70% , total shrinkage 23% -25% , total draw ratio 15, spinning velocity 155 m/min and moderate coagulation bath condition.