TCS工艺对PET FDY纤维成形的影响

采用热管纺丝 ( TCS)技术 ,生产 5 5 dtex/2 4f,78dtex/36 f PET-F DY长丝。探讨了纺丝工艺对纤维成形及产品力学性能的影响。结果表明 :张力对纤维结晶取向影响不大 ,热管温度对纤维取向、结晶及力学性能均有影响 ,结晶随热管温度的升高进一步完善 ,冷却吹风温度、湿度 ,集束位置均影响纤维成形 ,一般选择冷却风温度 2 2± 1℃ ,相对湿度 6 0 %～ 80 %。集束位置根据热管长度、丝条长度等进行选择

INFLUENCE OF TCS PROCESS CONDITIONS ON PET FDY FORMATION

Thermal channel spinning process(TCS) was adopted to produce 55 dtex/24f and 78 dtex/36f PET|FDY filaments. The influence of TCS process conditions on the fiber formation and mechanical properties was discussed.The result showed that thread tension has moderate effect on fiber orientation,while heat pipe temperature has much effect on fiber orientation,crystalline and mechanical properties. The fiber crystalline was improved with increasing heat pipe temperature. The quenching air temperature and humidity and collection position affected fiber formation. The optimal quenching air temperature was 22±1℃, and the relative humidity ranged from 60% to 80%. Collection position depended on heat pipe length and thread length.