摘要
对细旦高强涤纶短纤增容的可行性、增容后的工艺调整及纤维指标进行了单个纺丝位的研究,并通过四个纺丝位的扩位试验,进一步验证试验所选择的增容途径及优化的工艺对增容是否可行。结果表明:使用孔径为0.20 mm、长径比为2、海砂作为过滤材料的增容喷丝板组件时,喷丝板上机运行稳定且时间相对较长;聚酯熔体特性黏度的波动值<0.008 dL/g时,纺丝生产稳定;原丝含油水率在(26±2)%时,卷绕落丝顺畅,有利于减少丝结;环吹中心风速控制在5.0 m/s时,丝束内外层冷却条件趋于均匀;增容后的成品指标能够很好维持原水平,无染色色差、染色疵点等。喷丝板扩容10%左右,可有效提高产量降低转产成本。
This paper examined the feasibility of increasing the capacity of fine-denier high-strength staple fiber,as well as the process adjustment following the increase and fiber index.A single spinning position was used to study these topics,and an expansion test involving four spinning positions further confirmed the viability of both the optimized process and the capacity increase method chosen for the test.The results demonstrated that the machine operating on the spinneret was stable and the time was relatively long when the B-enhanced spinneret with a diameter of 0.20 mm,a ratio of length to diameter of 2,and multiple screening of sea sand was used as the filter material.The spinning production was stable when the characteristic viscosity of the polyester melt fluctuated at a value less than 0.008 dL/g.The smooth falling and winding of the fiber helped to reduce the knot when the precursor s oil-water content was approximately(26±2)%.The inner and outer layers of the tow typically have uniform cooling conditions when the central wind speed is maintained at 5.0 m/s.After the addition,the finished product index was able to effectively maintain its initial level,and there were no dyeing defects or variations in color for the user.Because B spinneret s expansion capacity was roughly 10%greater than A spinneret s,it was possible to both increase output and lower conversion costs.
作者
沈欣
Shen Xin(Synthetic Fibre Division 1 of Sinopec Yizheng Chemical Fibre Co.,Ltd.,Yizheng Jiangsu 211900,China)
出处
《合成技术及应用》
CAS
2024年第1期39-45,共7页
Synthetic Technology & Application
关键词
涤纶短纤维
细旦
高强
增容技术
生产工艺
polyester staple fiber
fine denier
high strength
capacity enhancement technology
production technology
