Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (03): 56-61.doi: 10.13475/j.fzxb.20190405906

• Textile Engineering • Previous Articles     Next Articles

Electric conduction and resistance theory model of circular weft knitted electrodes

ZHANG Jiahui1,2, WANG Jianping1,2,3()   

  1. 1. College of Fashion and Design, Donghua University, Shanghai 200051, China
    2. Key Laboratory of Clothing Design & Technology (Donghua University), Ministry of Education, Shanghai 200051, China
    3. Shanghai Institute of International Design and Innovation, Tongji University, Shanghai 200092, China
  • Received:2019-04-23 Revised:2019-12-14 Online:2020-03-15 Published:2020-03-27
  • Contact: WANG Jianping E-mail:wangjp@dhu.edu.cn

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Abstract:

In order to provide theoretical guidance for designing leggings with circular weft-knitted electrodes, based on the loop structure of knitted fabrics, a theoretical model of resistance module was established, with 2 types of conductive materials, 3 knitted structures and 4 electrode sizes, totaling 24 leggings. The leggings were knitted and treated by heat setting to analyze the electric conduction of knitted electrode, for exploring the influence of different factors on the electric conduction of knitted electrodes and establishing a linear fitting resistance model of knitted electrodes. The results show that different factors have significant influence on the conductivity of flexible electrodes, among which conductive material has the most significant influence. Heat setting has little effect on the electric conduction of flexible electrodes knitted by silver plated yarn therefore it can be used as the material for flexible knitted electrodes that need to be heat-set. The theoretical model of resistance module can be used to analyze and predict quantitatively the resistance of the knitted electrodes.

Key words: knitted electrode, resistance module, electric conduction, theoretical model, intelligent garment

CLC Number: 

  • TS941.19

Tab.1

Parameters of yarns"

纱线
编号		 纱线
类型		 单纱线
密度/dtex		 生产
厂商		 纤维直径/
μm		 捻度/
(捻·m-1)
A 镀银锦
纶纱		 222 青岛志远翔宇功能
性面料有限公司		 27.6 570
B 2合股不锈
钢纤维纱		 111 东莞盛芯特殊绳带
有限公司		 14.5 230
C 2合股
锦纶纱		 78 东方桂冠针纺织品
有限公司		 24.0 610
D 锦纶/氨纶
双包纱		 44/44/
44		 上海利以德特种丝
有限公司		 15.0 900(S)
1 160(Z)
E 锦纶/氨纶
双包纱		 311/
44/44		 上海利以德特种丝
有限公司		 15.0 1 080(S)
1 250(Z)

Fig.1

Loops' structures. (a) Plain weave fabric;(b) 1×1 rib fabric; (c) 1×2 rib fabric"

Tab.2

Processing parameter of weft-knitted electrodes"

纱线
编号		 组织
结构		 横密/
(纵行·(5 cm)-1)		 纵密/
(横列·(5 cm)-1)
A 平纹 58 36
1×1抽条 64 38
1×2抽条 65 40
B 平纹 53 29
1×1抽条 53 33
1×2抽条 56 36

Tab.3

Test results of conductive yarn"

纱线
编号		 复丝
根数		 伸长率/
%		 强力/
cN		 电阻拟合
情况		 电阻率/
(Ω·m)
A 48 44.5 869.8 y=5.036 62x+
0.197 57		 1.40×10-5
B 100 1.0 2 149.0 y=0.366 47x+
0.249 1		 1.21×10-6

Fig.2

Loop's structure and its resistance theory model. (a) Loop's structure; (b) Resistance hexagonal model;(c) Resistance module; (d) Resistance module theory model"

Tab.4

Theoretical value K of knitted electrode resistance"

纵行数×横列数 KpH KpZ K1H K1Z K2H K2Z
12×24 0.686 5 3.122 9 0.414 4 6.000 0 0.268 9 9.250 0
16×32 0.701 1 3.200 6 0.402 3 5.875 0 0.218 9 7.400 0
20×40 0.732 9 3.774 4 0.421 8 6.100 0 0.330 5 9.838 1
24×48 0.760 0 3.387 7 0.440 6 6.383 3 0.287 0 10.270 2

Fig.3

Horizontal resistance of knitted electrodes. (a) Plain weave fabric; (b) 1×1 rib fabric; (c) 1×2 rib fabric"

Fig.4

Vertical resistance of knitted electrodes. (a) Plain weave fabric; (b) 1×1 rib fabric; (c) 1×2 rib fabric"

Tab.5

Intersubjective effect of horizontal and vertical resistance of knitted electrodes"

源 横向电阻F值 纵向电阻F值
原料 3 600.039* 1 713.532*
尺寸 72.749* 125.455*
组织 199.558* 603.008*
原料×尺寸 20.525* 46.996*
原料×组织 31.619* 1 212.312*
尺寸×组织 5.886* 60.557*
原料×尺寸×组织 2.977* 69.926*

Tab.6

Mean marginal estimation of materials to horizontal and vertical resistance of knitted electrodes"

原料 横向电阻/Ω 纵向电阻/Ω
均值 标准误差 均值 标准误差
A 0.971 0.007 1.371 0.018
B 0.402 0.007 2.530 0.018

Tab.7

Mean marginal estimation of sizes to horizontal and vertical resistance of knitted electrodes"

纵行数×
横列数		 横向电阻/Ω 纵向电阻/Ω
均值 标准误差 均值 标准误差
12×24 0.625 0.009 1.638 0.025
16×32 0.617 0.009 1.724 0.025
20×40 0.717 0.009 2.158 0.025
24×48 0.786 0.009 2.266 0.025

Tab.8

Mean marginal estimation of structures to horizontal and vertical resistance of knitted electrodes"

组织 横向电阻/Ω 纵向电阻/Ω
均值 标准误差 均值 标准误差
平纹 0.819 0.008 2.629 0.024
1×1抽条 0.603 0.008 1.582 0.024
1×2抽条 0.637 0.008 1.629 0.024

Tab.9

Partial correlation coefficient between horizontal and vertical resistance and value K of knitted electrodes"

组织 偏相关系数
横向电阻 纵向电阻
平纹 0.931* 0.658
1×1抽条 0.802* 0.901*
1×2抽条 0.781* 0.711

Tab.10

Regression model of horizontal resistance of knitted electrodes"

回归方程 调整R2
Yp=0.140r+3.030KpH-1.743 0.986
Y1=0.101r+5.942K1H-2.164 0.920
Y2=0.124r+1.111K2H-0.005 0.980
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