纺织学报 ›› 2020, Vol. 41 ›› Issue (04): 98-105.doi: 10.13475/j.fzxb.20181106008
尉腾祥1,2, 李敏1,2, 彭虹云1,2, 付少海1,2()
WEI Tengxiang1,2, LI Min1,2, PENG Hongyun1,2, FU Shaohai1,2()
摘要:
针对纬平针棉针织物在平幅丝光过程中线圈拉伸易变形的问题,探究了其在不同丝光条件下线圈结构的变化规律,采用网格法将织物分成不同的织物单元,研究双向拉伸条件下不同单元的位移矢量、圈距、圈高、形态系数、剪切角等结构参数沿拉伸方向的变化规律。结果表明:张力和氢氧化钠质量浓度对线圈结构参数变化的影响较大,丝光温度和时间对线圈结构参数的影响较小;丝光后位移矢量场中出现织物形变较小(位移比小于50%)的椭圆形区域,圈距和圈高均服从抛物线变化(拟合度高于0.94),形态系数呈周期性梯度分布,剪切角的分布存在明显的递变规律;较佳的丝光工艺为双向拉伸扩幅5%,氢氧化钠质量浓度200 g/L,温度50 ℃,时间120 s。
中图分类号:
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