纺织学报 ›› 2019, Vol. 40 ›› Issue (11): 64-68.doi: 10.13475/j.fzxb.20181102906

• 纺织工程 • 上一篇    下一篇

纬平棉针织物双向拉伸线圈形态分析

尉腾祥1,2, 李敏1,2, 彭虹云1,2, 付少海1,2()   

  1. 1.江苏省纺织品数字喷墨印花工程技术研究中心, 江苏 无锡 214122
    2.生态纺织教育部重点实验室(江南大学), 江苏 无锡 214122
  • 收稿日期:2018-11-12 修回日期:2019-05-10 出版日期:2019-11-15 发布日期:2019-11-26
  • 通讯作者: 付少海
  • 作者简介:尉腾祥(1994—),男,硕士生。主要研究方向为针织物平幅丝光线圈形态变化规律。
  • 基金资助:
    国家重点研发计划资助项目(2017YFB0309701)

Shape analysis of biaxial stretching coil of weft plain knitted cotton fabric

WEI Tengxiang1,2, LI Min1,2, PENG Hongyun1,2, FU Shaohai1,2()   

  1. 1. Jiangsu Engineering Research Center for Digital Textile Inkjet Printing, Wuxi, Jiangsu 214122, China
    2. Key Laboratory of Eco-Textiles (Jiangnan University), Ministry of Education, Wuxi, Jiangsu 214122, China
  • Received:2018-11-12 Revised:2019-05-10 Online:2019-11-15 Published:2019-11-26
  • Contact: FU Shaohai

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摘要：

针对纬平针织物在平幅丝光过程中线圈拉伸易变形的问题,对丝光前纬平棉针织物进行了双向拉伸,研究不同拉伸条件下线圈形态变化规律,同时采用网格法将织物分成不同的单元,分析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:织物形变较小的区域呈椭圆形,且随着拉伸张力的增加,椭圆区域面积逐渐变小,圈距和圈高均符合抛物线的变化规律,形态系数呈周期性梯度分布,线圈最大剪切角变小,且所有剪切角减小的趋势变缓。

关键词: 纬平棉针织物, 网格法, 双向拉伸, 线圈形态, 结构参数

Abstract:

In view of the problem that the coil is deformed easily in the process of smooth mercerization, the weft plain knitted cotton fabric before mercerizing was stretched bilaterally, the shape changes of coils under different tensile conditions were studied. The fabric was divided into different units by a grid method, and the change rule of the displacement vector, coil spacing, coil height, shape coefficient and shear angle of different elements under biaxial stretching were studied. The results show that the less deformed region of fabric is elliptical, and with the tensile tension increases, ellipse area reduces, and the coil spacing and the coil height obey the trend of the parabola; the coil shape coefficient has a periodic gradient distribution, the maximum shear angle of the fabric decreases, and all the shear angles decrease slowly.

Key words: weft plain knitted cotton fabric, grid method, biaxial stretching, coil shape, structural parameter

中图分类号: 

  • TS181

图1

实验丝光架"

图2

剪切角示意图"

图3

不同扩幅条件下织物的节点向量场和位移场"

图4

中心线上织物单元横纵向的圈距和圈高"

表1

圈距和圈高的拟合方程"

织物单元 扩幅/% 方程 R2
横向圈距 5 Y=7.352 32-0.048 09X+0.002 29X2 0.992 84
10 Y=7.610 91-0.068 16X+0.003 25X2 0.959 65
15 Y=8.020 49-0.083 59X+0.003 98X2 0.988 68
横向圈高 5 Y=7.250 81-0.011 67X+0.000 555 9X2 0.980 95
10 Y=7.416 49-0.018 13X+0.000 863 5X2 0.990 77
15 Y=7.967 09-0.019 11X+0.000 910 2X2 0.950 47
纵向圈距 5 Y=7.164 67-0.014 09X+0.000 670 9X2 0.983 38
10 Y=7.411 58-0.027 7X+0.001 32X2 0.991 03
15 Y=7.721 89-0.022 61X+0.001 08X2 0.987 34
纵向圈高 5 Y=7.380 11-0.037 39X+0.001 78X2 0.992 84
10 Y=7.609 68-0.056 91X+0.002 71X2 0.959 65
15 Y=8.082 25-0.039 07X+0.001 86X2 0.988 68

图5

横向和纵向中心线上各单元的形态系数"

图6

不同扩幅条件下织物所有单元的形态系数"

图7

不同扩幅条件下织物所有单元的剪切角"

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