Journal of Textile Research ›› 2025, Vol. 46 ›› Issue (03): 64-71.doi: 10.13475/j.fzxb.20231104601

• Textile Engineering • Previous Articles     Next Articles

Abrasion resistance of recycled cotton/raw cotton rotor spun yarn

SHAO Qiu, YANG Ruihua()   

  1. College of Textile Science and Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
  • Received:2023-11-22 Revised:2024-06-23 Online:2025-03-15 Published:2025-04-16
  • Contact: YANG Ruihua E-mail:yangrh@jiangnan.edu.cn

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Abstract:

Objective Fibers recycled from waste textiles is known for their reduced length, hence it is hard to spin as yarn again. However, it can be spun by rotor spinning which is well known for its low raw material requirements. The method to spun recycled yarns gives highlight of extremely useful of waste textiles. However, the yarn showed some disadvantages, such as low strength and poor abrasion resistance. Taking recycled rotor spun yarn as the research object, the correlation between different rotor spinning processes parameters, basic yarn performance indicators, and abrasion resistance of recycled rotor yarns is investigated.

Method Compared to raw cotton, the quality of recycled cotton fibers such as the fiber length, strength, and so on deteriorated to varying degrees. Recycled cotton is difficult to form yarn. Rotor spinning is adopted to mix raw cotton(length of 28 mm) and recycled cotton (length of 9.5 mm) at a ratio of 65/35 to form recycled rotor spinning yarn. Spinning was carried out under different process parameters including linear density, rotor speed, twist coefficient, and carding speed. Performance of yarns such as strength, evenness, and hairiness were evaluated. Correlation analysis is adopted to study the influence of yarn process parameters on yarn performance. Factor analysis is adopted to comprehensively study the influence of yarn performance indicators on abrasion resistance.

Results The performance of recycled rotor spun yarn with different parameters is compared. It is found that the breaking strength(correlation coefficients of 0.697*) and elongation (correlation coefficients of 0.769*) are significantly correlated with the twist coefficient. With the increaseing twist coefficient, the strength and elongation of the recycled rotor spun yarn also increases. The carding speed has the greatest correlation with CV(correlation coefficient of 0.540) value. As the carding speed increases, CV value first decreases and then increases. A significant correlation exists between hairiness and linear density(correlation coefficient of 0.750*), and hairiness increases with the increase of linear density.

The abrasion resistance of yarn is the result of the comprehensive effect of multiple performance indicators of yarn, and a certain correlation exists between multiple performance indicators The information reflected between some performance indicator parameters is duplicated. The correlation between the quality indicators of recycled rotor spun yarn was analyzed using SPSS. Using factor analysis method, the quality indicators of recycled rotor spun yarn are reduced in dimensionality. Three principal factors, namely appearance factor(F1), mechanical factor(F2), and hairiness factor(F3), were extracted from it. And scatter plots were drawn for the number of rubbing times and the three quality factors mentioned above, and it was found that the abrasion resistance decreased with the increase of F1, F2, and F3. A yarn comprehensive score model was established by weighting the three factors (fitting equation R2 value of 0.817 2). The comprehensive score values of yarns (1#-9#) were obtained. It was found that the abrasion resistance of yarns decreased with the increase of the comprehensive score value, and the relationship between the two was close to linear.

Conclusion The correlation between process parameters (linear density, rotor speed, twist coefficient, and carding speed) and the basic performance indicators of recycled rotor spinning are investigated. Due to the low abrasion resistance of recycled rotor spinning, the relationship between basic performance indicators and abrasion resistance was studied using SPSS software, and a regression model was established. It was found that the abrasion resistance showed a decreasing trend with the increase of appearanceity, mechanical factor and hairiness factor. According to the yarn comprehensive score model, the abrasion resistance of the yarn decreases with the increase of the comprehensive score value, and the relationship between them is close to linearity. Improving the abrasion resistance of recycled yarn can be achieved by increasing the twist to increase yarn strength and selecting an appropriate combing speed to reduce yarn unevenness.

Key words: recycled cotton fiber, carbon neutrality, rotor spinning, yarn property, recycled cotton/raw cotton yarn, abrasion resistance of yarn

CLC Number: 

  • TS111

Tab.1

Length and performance of recycled cotton and raw cotton"

样品
名称		 主体长度/
mm		 (根数)短纤维率
(低于16 mm)/%		 断裂强力/
cN		 断裂
伸长率/%
再循环棉 9.5 73.08 3.73 6.28
原棉 28.0 18.00 8.34 17.29

Fig.1

Comparison of length between recycled cotton (a) and raw cotton (b)"

Tab.2

Yarn process parameters"

纱线
编号		 线密度/
tex		 转杯转速/
(r·min-1)		 捻系数 分梳速度/
(r·min-1)
1# 58.3 65 000 415 7 000
2# 44.9 65 000 415 7 000
3# 27.8 65 000 415 7 000
4# 44.9 55 000 415 7 000
5# 44.9 75 000 415 7 000
6# 44.9 65 000 430 7 000
7# 44.9 65 000 445 7 000
8# 44.9 65 000 415 6 000
9# 44.9 65 000 415 8 000

Fig.2

Factor analysis flowchart"

Tab.3

Yarn properties"

纱线
编号		 断裂强力/
cN		 断裂伸长
率/%		 条
CV值/%		 疵点/(个·km-1) (根·(100 m)-1) 摩擦
次数
细节(-50%) 粗节(+50%) 棉结(+280%) 毛羽根数1~2 mm 毛羽根数≥3 mm)
1# 438.6 6.60 11.97 0 0 0 7 634 1 784 232
2# 610.3 10.29 11.67 0 33.3 36.7 8 460 1 464 324
3# 198.0 5.16 15.16 20.0 33.3 20.0 5 134 492 220
4# 289.9 6.54 14.32 3.3 30.0 3.0 7 630 1 592 228
5# 281.8 4.22 13.19 0 16.7 6.7 6 532 1 184 189
6# 615.4 10.92 8.94 0 10.0 10.0 5 646 1 148 337
7# 629.2 11.76 12.04 0 26.7 26.7 4 926 920 371
8# 293.5 6.39 12.92 0 13.3 30.0 7 924 1 852 197
9# 273.8 5.94 18.87 120.0 160.0 6.7 6 646 1 044 139

Tab.4

Correlation cofficient matrix"

指标 线密度 转杯
转速		 捻系数 分梳
速度		 断裂
强力		 断裂
伸长率		 条干
CV值		 细节
(-50%)		 粗节
(+50%)		 棉结
(+280%)		 毛羽根数 摩擦
次数
1~2 mm ≥3 mm
线密度 1 0.000 0.028 0.000 0.376 0.168 -0.295 -0.117 -0.148 -0.352 0.502 0.750* 0.056
转杯转速 0.000 1 0.000 0.000 -0.012 -0.213 -0.103 -0.021 -0.069 0.070 -0.215 -0.232 -0.126
捻系数 0.028 0.000 1 0.000 0.679* 0.769* -0.428 -0.213 -0.164 0.226 -0.647 -0.337 0.759*
分梳速度 0.000 0.000 0.000 1 -0.029 -0.041 0.540 0.758* 0.765* -0.442 -0.250 -0.460 -0.187
断裂强力 0.376 -0.012 0.679* -0.029 1 0.943** -0.725* -0.366 -0.293 0.347 -0.067 0.086 0.902**
断裂伸长率 0.168 -0.213 0.769* -0.041 0.943** 1 -0.615 -0.281 -0.188 0.453 -0.182 -0.035 0.923**
条干CV值 -0.295 -0.103 -0.428 0.540 -0.725* -0.615 1 0.825** 0.822** -0.214 0.001 -0.270 -0.759*
细节(-50%) -0.117 -0.021 -0.213 0.758* -0.366 -0.281 0.825** 1 0.977** -0.243 -0.095 -0.305 -0.561
粗节(+50%) -0.148 -0.069 -0.164 0.765* -0.293 -0.188 0.822** 0.977** 1 -0.128 -0.055 -0.309 -0.474
棉结(+280%) -0.352 0.070 0.226 -0.442 0.347 0.453 -0.214 -0.243 -0.128 1 0.073 -0.074 0.441
毛羽根数(1~2mm) 0.502 -0.215 -0.647 -0.250 -0.067 -0.182 0.001 -0.095 -0.055 0.073 1 0.852** -0.270
毛羽根数(≥3 mm) 0.750* -0.232 -0.337 -0.460 0.086 -0.035 -0.270 -0.305 -0.309 -0.074 0.852** 1 -0.117
摩擦次数 0.056 -0.126 0.759* -0.187 0.902** 0.923** -0.759* -0.561 -0.474 0.441 -0.270 -0.117 1

Tab.5

Calculation results of variance contribution rate"

项目 初始特征值方差 提取的主因子方差载荷 旋转后主因子方差载荷
总值 贡献率/% 累积
贡献率/%		 总值 贡献率/% 累积
贡献率/%		 总值 贡献率/% 累积
贡献率/%
第1因子(F1) 3.655 45.689 45.689 3.655 45.689 45.689 2.766 34.577 34.577
第2因子(F2) 2.036 25.454 71.143 2.036 25.454 71.143 2.363 29.533 64.110
第3因子(F3) 1.304 16.297 87.440 1.304 16.297 87.440 1.866 23.330 87.440
第4因子(F4) 0.809 10.113 97.553 — — — — — —
第5因子(F5) 0.094 1.169 98.722 — — — — — —
第6因子(F6) 0.069 0.868 99.590 — — — — — —
第7因子(F7) 0.025 0.317 99.907 — — — — — —
第8因子(F8) 0.007 0.093 100.000 — — — — — —

Tab.6

Factor load matrix after rotation"

因子 y1 y2 y3 y4 y5 y6 y7 y8
F1 0.299 0.186 0.835 0.954 0.986 -0.010 0.035 -0.248
F2 0.895 0.943 0.484 0.150 0.038 -0.643 0.033 0.007
F3 0.019 0.126 -0.051 -0.116 -0.088 0.053 0.978 0.931

Tab.7

Component score coefficient matrix"

因子 y1 y2 y3 y4 y5 y6 y7 y8
F1 -0.044 -0.093 0.275 0.389 0.430 0.132 0.116 -0.012
F2 0.399 0.439 0.084 -0.108 -0.174 -0.333 -0.059 -0.012
F3 -0.020 0.025 0.028 0.028 0.056 0.074 0.553 0.497

Fig.3

Relationship between principal factor and abrasion resistance. (a) Appearance factor; (b)Mechanical factor; (c)Hairiness factor"

Tab.8

Pricinpal factor score table"

编号 F1 F2 F3 综合得分 综合排名
1# -0.714 70 0.542 10 0.826 23 0.12 6
2# 0.175 41 -1.536 91 1.049 81 -0.17 3
3# -0.002 85 0.896 07 -1.530 59 -0.11 4
4# -0.183 51 0.777 84 0.669 53 0.37 8
5# -0.581 19 1.162 04 -0.254 82 0.09 5
6# -0.797 64 -0.834 32 -0.734 65 -0.79 2
7# -0.198 20 -1.350 79 -1.164 32 -0.85 1
8# -0.219 83 0.117 85 1.207 96 0.28 7
9# 2.522 52 0.226 12 -0.069 15 1.06 9

Fig.4

Relationship between comprehensive scores and abrasion resistance"

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