摘要
采用含有吸湿基团及功能性无机粉体的多功能共聚酯切片与常规聚酯（PET）切片共混,生产具有吸湿速干、抗静电、抗起球、抗紫外等三叶形复合功能PET短纤维,对其纺丝工艺进行探讨.结果表明：采用Y形喷丝孔,于喷丝板的内圈至外圈呈等差交错向心排布;多功能共聚酯切片共混前,先用转鼓在130℃下预结晶11～13 h,与常规PET切片按质量比2∶8共混,共混后切片干燥采用流化床与充填干燥塔结合的方式,干燥温度155～160℃,干燥时间4～5h,共混切片含水率小于30 μg/g;组件初始压力为9.5 ～11.5 MPa,纺丝温度285～287℃,环吹风温度21 ～23℃,速度0.95～1.05 m/s,油浴拉伸占总拉伸倍数的86％～ 88％,拉伸温度58～62℃;生产1.33 dtex三叶形复合功能PET短纤维的断裂强度为5.63 cN/dtex,断裂伸长率为15.7％,其织物抗起球性能为4～5级,最大吸水率为294％.
A muhifunctional trilobal polyester （PET） staple fiber with moisture absorptive and quick drying performance, anti-static and anti-pilling property and ultrasonic resistance was prepared by blending traditional PET chip with multifunctional co-polyester chip containing moisture absorption group and functional inorganic powder. The spinning process was discussed. The re-sults showed that the trilobal spinneret holes were arranged in an equivalent staggered centripetal pattern from inner circle to outercircle; the multifunctional copolyester chip was exposed to pre-crystallization in a drum at 130 ℃ for 11 - 13 h prior to blendingwith traditional PET chip in a mass ratio of 2 ＂ 8 ; the moisture content of the blended chip should be controlled below 30 p,g/g byadopting the fluidized bed and fill drying column combination drying method at the drying temperature of 155 - 160 ℃ and time4 - 5 h; the multifunctional trilobal PET staple fiber of 1.33 dtex could be produced with the breaking strength of 5.63 cN/dtexand elongation at break of 15.7% under the conditions as followed： spinpack initial pressure 9.5 - 11.5 MiCa, spinning tempera-ture 285 -287 ℃, circular air blow temperature 21 -23 ℃ and speed 0.95 - 1.05 m/s, 86% -88% drawing in oil bath of theoverall draw ratio, drawing temperature 58 -62 ℃ ; and the fabric made thereof had the anti-pilling property up to grade 4 - 5and the maximum moisture adsorption of 294%.
出处
《合成纤维工业》
CAS
2015年第3期63-66,共4页
China Synthetic Fiber Industry
