摘要
为分析加捻纱线的垂直芯吸现象,基于毛细效应建立了一个理想结构纱线的芯吸数值模拟模型。为验证该数值模型,选取直径为55μm、圆形横截面的37根涤纶纤维制备6种不同捻度的涤纶纱线,并进行一系列垂直芯吸实验,分析了纱线捻度及理想结构纱线3种不同排列方式对纱线芯吸性能的影响。结果表明,实验数据与数值模型模拟结果的芯吸速率趋势一致,模型在纱线芯吸研究中具备可行性;随着捻度的增加,纱线芯吸速率显著减小;开启式(圆周形)理想结构纱线的孔隙形状随纱线中纤维层数的变化而变化,相同孔隙率条件下,开启式排列的纱线表现出较高的芯吸速率,密闭式(正六边形)次之,正方形最低。
In order to analyze the vertical wicking phenomenon of twisted yarns.Based on the capillary effect,a numerical simulation model of wicking of ideally structured yarns was established.In order to verify the numerical model,a series of vertical wicking experiments were conducted using 6 types of polyester yarns with different twists prepared from 37 polyester fibers with a diameter of 55 μm and circular cross-section.The results show that the experimental data are consistent with the numerical simulation results,and the model is feasible in the study of yarn core drawing.In addition,the effect of yarn twist and three different arrangements of ideal structure yarns on the core absorption performance of yarns is analyzed.With the increase of twist,the core drawing rate of yarn decreases significantly.At the same time,the pore shape of open yarns varies with the number of fiber layers in the yarns.Under the same porosity condition,open yarns exhibit higher core absorption rate,followed by closed yarns,and square yarns have the lowest.
作者
杜世仪
万贤福
汪军
DU Shiyi;WAN Xianfu;WANG Jun(College of Textiles,Donghua University,Shanghai 201620,China;Key Laboratory of Textiles Science Technology of Ministry of Education,Donghua University,Shanghai 201620,China)
出处
《毛纺科技》
北大核心
2025年第3期17-21,共5页
Wool Textile Journal
关键词
加捻纱线
理想结构纱线
毛细效应
芯吸现象
数值模拟
twisted yarn
ideal structure yarn
capillary effect
wicking phenomenon
numerical simulation
