高亲水中空涤纶短纤维纺丝工艺探讨

China Synthetic Fiber Industry(2017)

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Abstract
以特性黏数0.598 dL/g的高亲水聚酯切片为原料,采用双C型喷丝板生产高亲水中空涤纶短纤维,探讨了生产工艺条件对产品质量的影响.结果表明:控制高亲水聚酯切片的含水率小于30 μg/g,组件初始压力9.5~11.0 MPa,纺丝温度276~282 ℃,环吹风温度23~25 ℃、速度1.0~1.1 m/s,拉伸槽温度58~63 ℃,紧张热定型温度140~150 ℃,总拉伸倍数2.20~2.25等工艺条件,纺丝过程稳定,后加工顺利;上述工艺条件下,生产的2.53 dtex高亲水中空涤纶短纤维产品质量达到预期效果,断裂强度2.23 cN/dtex,断裂伸长率22.5%,回潮率1.17%,中空度大于等于20%.
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