生物基锦纶56用抗静电纺丝油剂的复配及其对短纤维可纺性的影响

针对生物基锦纶56(PA56)短纤维质量比电阻大,静电严重,可纺性差的问题,采用市售油剂和抗静电剂复配技术开发了抗静电性、集束性、可纺性较好的生物基PA56纺丝油剂。研究了抗静电剂质量浓度对复配油剂电导率、pH值的影响,考察了经复配油剂处理后PA56纤维的表面形貌、摩擦因数、质量比电阻及梳理机成网加工性能。结果表明:复配油剂在纤维表面形成一层光滑、均匀的油膜;复配纺丝油剂中抗静电剂质量浓度在2 g/L、市售油剂质量浓度在12 g/L为宜,经处理的PA56纤维在相对湿度为35%,室温下可顺利梳理成网,且纤维网均匀、无破洞、云斑;该油剂复配方案提升了锦纶的集束性、抗静电性、可纺性,节能环保,对纺纱车间温湿度要求低。

Preparation of compound antistatic spinning oil for bio-based polyamide 56 and its effect on staple fiber spinnability

Aiming at the problems of high mass specific resistance,serious static electricity and poor spinnability of bio-based polyamide 56(PA56)staple fibers,a spinning oil was developed using the compound technology of commercial oil and antistatic agent.The influence of antistatic agent concentration on the conductivity and pH value of the compound oil was studied.The surface morphology,friction coefficient,mass specific resistance and carding performance of the bio-based PA56 staple fibers were investigated.The results showed that a smooth and uniform oil film was formed on the fiber surface after the compound oil treatment.The optimum concentration of antistatic agent and spinning oil were 2 g/L and 12 g/L respectively.Under this condition,a fiber-web from the PA56 staples was formed at the relative humidity of 35%and room temperature,which was uniform without holes and cloud spots.This compound spinning oil improves the bunching,antistatic and spinnability of PA56 staple fibers.It is a green and energy-saving method,requiring only for ambient temperature and humidity of spinning workshop.