针对如何有效经济地提升亚麻棉混纺纱线质量问题,提出了物理集聚纱体表面有害毛羽的方法.通过在成纱段设计和安装旋转式沟槽专件,对纱体施加摩擦应力,增强对纤维的控制力,达到提升纱线质量的目的.理论模型分析可知,摩擦应力的介入导致纱线的捻度传递出现梯度差异,随着摩擦应力的增加,梯度差异增加.在摩擦力和扭转力的协同作用下,纱体表面纤维被捕捉和加捻,达到集聚纤维须条的目的,从而减少毛羽.实验结果证实:随着摩擦应力的增加,纱线毛羽降低的幅度越高,有害毛羽最多可降低35.5%.然而,过大的摩擦应力会恶化条干,最高为1.6%.其中粗节上升7.3%,棉结上升4.8%,而强力没有明显变化.通过计算优化施加的摩擦应力,协同捻度差效应,达到提升纱线质量的目的.
A physical method of gathering harmful fibers on the surface of yarns is proposed to improve the quality of linen-cotton blended yarns effectively and economically.Through the design and installation of rotary grooves in the yarn section,friction stress is applied to yarn body to enhance the control on fiber strand,which can improve yarn quality.According to the theoretical model analysis,the gradient difference in twist transfer of yarn is caused by friction stress,and the gradient difference increases with the increase of friction stress.With the synergistic effect of friction and torsion force,the fibers of yarn surface are caught and twisted,and the hair is reduced.The experimental results show that with the increase of friction stress,yarn hairiness can be reduced by up to 60%.However,excessive frictional stress can worsen evenness and strength,up to 10%and 10%re-spectively.This work is aimed to optimize friction stress applied on fibers based on theoretical calculation,im-proving yarn quality.
余豪;代佳佳;刘俊杰;孙悦;蒋立泉;夏治刚
武汉纺织大学 省部共建纺织新材料与先进加工技术国家重点实验室,武汉 430073武汉纺织大学 省部共建纺织新材料与先进加工技术国家重点实验室,武汉 430073||武汉纺织大学 纺织科学与工程学院,武汉 430073
轻工业
物理集聚;摩擦应力;捻度差异;毛羽;强力;条干
physical agglomeration;frictional stress;twist difference;hairiness;strength;evenness
《纺织工程学报》 2024 (001)
33-43 / 11
湖北省重点研发计划项目(2021BAD003);国家自然科学基金面上项目(52373270);国家科技部重点研发计划项目(2022YFB3805800).
评论