熔体直纺288 dtex/288 f全消光扁平PET POY的生产工艺研究  

Production process of direct melt-spun 288 dtex/288 f full-dull flat PET POY

作　　者：王春燕 庄维峰 王晓明 柳恩 张银鸿 叶茂 WANG Chunyan;ZHUANG Weifeng;WANG Xiaoming;LIU En;ZHANG Yinhong;YE Mao(Tongkun Group Zhejiang Hengtong Chemical Fiber Co.,Ltd.,Tongxiang 314500)

机构地区：[1]桐昆集团浙江恒通化纤有限公司,浙江桐乡314500

出　　处：《合成纤维工业》2024年第1期81-84,89,共5页China Synthetic Fiber Industry

摘　　要：将干燥的全消光母粒熔融挤出后与聚对苯二甲酸乙二醇酯(PET)熔体动态共混,采用熔体直纺工艺路线纺制288 dtex/288 f全消光扁平PET预取向丝(POY),研究了全消光母粒干燥工艺条件、螺杆温度、纺丝组件压力、纺丝温度、冷却条件、上油工艺和卷绕速度对纤维性能的影响。结果表明:较佳的生产工艺条件为在全消光母粒干燥温度140℃、干燥时间10 h,螺杆各区采用低温逐渐递增的排列形式,组件初始压力17.0 MPa,管道输送温度287.0℃,纺丝箱体温度292.5℃,冷却风压为35 Pa,无风区高度55 mm,集束位置900 mm,纤维上油率0.57%,卷绕速度2530 m/min;在此工艺条件下,生产的288 dtex/288 f全消光扁平PET POY断裂强度为2.15 cN/dtex、断裂伸长率为130.5%、扁平度为3.2。A dry full-dull masterbatch was melt-extruded and dynamically blended with polyethylene terephthalate(PET)melt to produce 288 dtex/288 f full-dull flat PET pre-oriented yarn(POY)by direct melt spinning process.The effects of drying process conditions,screw temperature,spinning component pressure,spinning temperature,quenching conditions,oiling process and winding speed of full-dull masterbatch on fiber properties were studied.The results showed that the 288 dtex/288 f full-dull flat PET POY could be prepared with a breaking strength of 2.15 cN/dtex,elongation at break of 130.5%and flatness of 3.2 under the optimal process conditions of drying temperature 140℃and time 10 h for full-dull masterbatch,screw zones in a gradually temperature-increasing arrangement from low temperature,initial pressure of the components 17.0 MPa,pipeline transportation temperature 287.0℃,spinning box temperature 292.5℃,quenching air pressure 35 Pa,windless zone height 55 mm,collection position 900 mm,fiber oil content 0.57%and winding speed 2530 m/min.

关 键 词：聚对苯二甲酸乙二酯纤维 熔体直纺 全消光 扁平形 生产工艺 

分 类 号：TQ342.21[化学工程—化纤工业]