芳纶纱上浆工艺实践

Sizing Practice of Aramid Yarn

探讨芳纶纱上浆工艺。针对芳纶纱上浆后织机效率低、布面疵点多等问题,对芳纶纱浆料配方进行优化,测试了3种不同浆料配方的浆液性能及相应浆纱的断裂强力、伸长率、毛羽数、织机效率、布面疵点及织造落白情况。结果表明:芳纶纱的浆料配方中PVA、变性淀粉、丙烯酸、抗静电剂含量为17%、76%、5%、2%时,浆液黏度热稳定性好,织机效率达到90%以上,织物织疵少,车间空气环境好。认为:合理设置浆料配方中PVA、变性淀粉和丙烯酸的比例,能提高芳纶产品生产时的织机效率。

Sizing process of aramid yarn was discussed.Aiming at the problems of lower loom efficiency and many fabric defects after sizing aramid yarn,aramid yarn sizing instruction was optimized.Sizing properties of the three different sizing instructions and corresponding sizing yarns breaking strength,elongation,hairiness,loom efficiency,fabric defect and weaving dust off were tested.The results showed that when the contents of PVA,modified starch,acrylic acid and antistatic agent in the sizing instruction were 17%,76%,5%and 2%,thermal stability of sizing liquor viscosity was better,loom efficiency could be reached above 90%.There were few fabric weaving defects and air environment in the workshop was better.It is considered that reasonable proportion setting of PVA,modified starch and acrylic acid in sizing instruction,the loom efficiency can be improved.