Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (02): 26-29.doi: 10.13475/j.fzxb.20181100504

• Textile Engineering • Previous Articles     Next Articles

Formation and characterization of auxetic yarns with interlaced-helical structure and fabrics

LIU Sai1, ZHENG Dongming2, PAN Xingxing3, LIU Gui3, DU Zhaoqun1()   

  1. 1. College of Textiles, Donghua University, Shanghai 201620, China
    2. Jiangxi Provincial Center for Quality Inspection and Supervision on Down Products, Jiujiang,Jiangxi 332020, China
    3. Fuzhou,Fujian Provincial Key Laboratory of Textiles Inspection Technology (Fujian Fiber Inspection Bureau), Fuzhou, Fujian 350026, China
  • Received:2018-11-01 Revised:2018-11-08 Online:2019-02-15 Published:2019-02-01
  • Contact: DU Zhaoqun E-mail:duzq@dhu.edu.cn

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Abstract:

In order to improve the structural stability and applicability of auxetic yarn with a helical wrapping structure, a novel interlaced-helical structure and a forming method were designed. The auxetic effects of two kinds of yarns with the same materials and structure parameters were studied. By means of of USB microscope and tensile tester, the diameter of yarn under axial tensile strain were measured, and then, Poisson's ratio were calculated. The experimental results show that both the structure stability and the auxetic effect of the novel auxetic yarn are improved obviously. The maximum negative Poisson's ratio is -1.6 with the axial strain of 22.5%. In addition, the preliminary investigation results of the woven fabric based on the yarn show that the deformation of the auxetic yarn causes the variety of the fabric porosity. When the latitudinal strain is 20%, the porosity of the fabric is 4%. It also provides the possibility for the application of intelligent filter materials and fashion designing.

Key words: interlaced-helical wrapping structure, auxetic yarn, woven fabric, porosity

CLC Number: 

  • TS102

Tab.1

Details of yarns and fabrics"

名称 结构及参数 材料
拉胀纱线 单螺旋包缠结构
(初始包缠角33°)		 芯纱-氨纶(线密度124.4 tex)
包缠纱-涤纶复丝(线密度16.7 tex,拉伸模量48.8 cN/tex)
交叉螺旋包缠结构
(初始包缠角33°)		 Y1:芯纱-氨纶(线密度124.4 tex);
包缠纱-涤纶复丝(线密度16.7 tex,拉伸模量48.8 cN/tex)
Y2:芯纱-氨纶(线密度124.4 tex);
包缠纱-涤纶单丝(线密度6.7 tex,拉伸模量180.8 cN/tex)
机织物 平纹组织 经纱:超高分子量聚乙烯(线密度13.3 tex,拉伸模量20 000 cN/tex)
纬纱:交叉螺旋包缠结构拉胀纱线Y
蜂巢组织

Fig.1

Structures of yarns. (a)Helical wrapping auxetic yarns in natural state; (b) Interlaced-helical wrapping auxetic yarns in natural state"

Fig.2

Poisson's ratio and axial strain curves of helical and interlaced-helical wrapping auxetic yarns"

Fig.3

Structures of interlaced-helical wrapping auxetic yarn. (a) In natural state; (b) Under weft strain of 20%; (c) Under weft strain of 30%"

Fig.4

Structures of two interlaced-helical wrapping auxetic yarns. (a)In natural state; (b)Under weft strain of 20%"

Fig.5

Structures of plain fabric. (a) In natural state;(b) Under weft strain of 20%"

Fig.6

Structures of honeycomb fabric. (a) In natural state;(b) Under weft strain of 20%"

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