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POY135dtex/288f环吹风生产工艺分析

2021-08-26化琳

河南科技 2021年9期

化琳

摘 要:随着国内聚酯(PET)长丝制造商规模的不断扩大,市场日益饱和,常规纺丝已经远远无法保证企业的强劲竞争力。唯有持续地研发高品质且富有附加值的新型品种,企业才不会被市场所淘汰。其间充分利用超细旦多孔丝的优良毛细效应和特有的弯钢性,经后加工制造出桃皮绒、防水透气织物和仿真丝仿麻等。这种纤维制成的织物具有诸多应用优势,因此熔体直纺135dtex/288f产品的研制和开发对于企业进一步开拓市场、拓宽产品组合结构来说有着非常重要的作用。多次试验研究结果显示,采用熔体直纺和环吹式冷却、纺丝温度290~300 ℃、无风区高度55~75 mm,风压10~20 Pa、油架高度500~600 mm等工艺条件时,生产保持稳定,产品能够满足客户的要求。

关键词:超细旦;多孔细旦POY;熔体直纺

中图分类号:TQ342.2 文献标识码:A 文章编号:1003-5168(2021)09-0041-03

Abstract: With the continuous expansion of domestic polyester (PET) filament manufacturers, the market is becoming increasingly saturated, conventional spinning has been far from guaranteeing the strong competitiveness of enterprises. Only by continuously researching and developing new types of high-quality and value-added products can companies not be eliminated by the market. In the meantime, it makes full use of the excellent capillary effect and unique bending properties of ultra-fine denier porous yarn, and after post-processing, peach skin, waterproof and breathable fabric and artificial silk and linen are produced. The fabric made of this fiber has many application advantages, so the research and development of the melt direct spinning 135dtex/288f product plays a very important role for the company to further expand the market and broaden the product portfolio structure. The results of many experiments have shown that under the process conditions of adopting melt direct spinning and ring blowing cooling, spinning temperature 290~300 ℃, windless zone height 55~75 mm, wind pressure 10~20 Pa, oil rack height 500~600 mm, etc., the production remains stable, and the products can meet customer requirements.

Keywords: ultra-fine denier;porous fine denier POY;melt direct spinning

超細旦纤维指的是单丝纤度为0.3~0.5dtex的纤维。它既是近年来我国化纤市场中得以快速发展的一种差异化纤维,也是具有较高品质、优良性能和高技术含量的新型纤维品种,又是化学纤维朝着高仿真化方向进步发展的一种新合纤维。超细旦纤维被赋予了许多优越的功能,如吸湿、透气、富有弹性等特点。环吹风式自动冷却机作为一种新型的现代纺丝自动冷却设备,为纺织预取向丝(POY)提供了有力的生产技术保障。本文以生产POY 135dtex/288f(纤度中心值为135dtex)为例,讨论了熔体直纺超细旦长丝的工艺条件。

1 试验

1.1 原料

江苏申久(集团)有限公司采用伊文达聚酯装置生产的PET熔体,特性黏度为(0.679 5±0.005 0)dL·g,端羧基含量为(30±4) mol/t,熔点为(260±2)℃,二甘醇含量为(0.95±0.15)%。……

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