Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (06): 128-132.doi: 10.13475/j.fzxb.20200607205

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Influence of liquid ammonia treatment on properties of polyamide/cotton blended fabrics

ZHANG Hua1(), ZHANG Jie2, GAO Yan3   

  1. 1. Institute of Quartermaster Engineering & Technology, Institute of Engineering, Academy of Military Science, PLA, Beijing 100088, China
    2. Beijing BW Techtextile Co., Ltd., Beijing 100043, China
    3. United Testing Services (Beijing) Co., Ltd.,/CNTAC Testing Center, Beijing 100025, China
  • Received:2020-06-07 Revised:2021-03-17 Online:2021-06-15 Published:2021-06-28

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Abstract:

Polyamide/cotton blended fabrics prone to wrinkles and uneven appearance limiting their applications in high-quality clothing. Aiming at such problems, a polyamide/cotton blended fabric was taken as the research object, and the greige was treated with liquid ammonia after pretreatment and before dyeing and finishing. The effect of the liquid ammonia treatment on the tensile strength, tear strength, wrinkle recovery and surface properties were evaluated. Three quantitative indicators, i.e. smoothness, warmth and softness, were used to evaluate handle of the polyamide/cotton blended fabric samples before and after liquid ammonia treatment. The results show that the liquid ammonia finishing can increase both the tensile strength and tear strength of the polyamide/cotton blended fabric. The wrinkle recovery angle of the fabrics treated with liquid ammonia increased from 218° to 252.3°, and the ratio of roughness wavelength-to-amplitude decreased from 50.46 to 44.87, which indicates that the crease resistance and smoothness of the fabrics treated with liquid ammonia were significantly improved. Although liquid ammonia did not significantly improve the softness of the fabric, the thermal conductivity of the treated fabric was lower than that of the untreated fabric to a certain extent, resulting in the improvement of the contact warmth of the fabric.

Key words: liquid ammonia treatment, polyamide/cotton fabric, surface characteristic, wrinkle recovery angle, fabric handle

CLC Number: 

  • TS195.513

Tab.1

Fabric strength change after liquid ammonia treatmentN"

试样 经向拉伸强力 纬向拉伸强力
未经液
氨处理 		液氨
处理 		未经液
氨处理 		液氨
处理
二次预定形织物 1 542.0 1 632.3 1 171.2 1 146.7
染色织物 1 574.8 1 591.7 1 198.5 1 097.1
亲水整理织物 1 706.3 1 736.3 1 152.9 1 167.1
成品织物 1 567.8 1 613.9 1 186.7 1 206.1

Tab.2

Tear strength change after liquid ammonia treatmentN"

试样 经向撕破强力 纬向撕破强力
未经液
氨处理 		液氨
处理 		未经液
氨处理 		液氨
处理
二次预定形织物 139.3 183.8 96.6 106.6
染色织物 125.7 143.4 74.3 103.1
亲水整理织物 169.8 217.8 92.8 101.1
成品织物 190.5 227.7 146.2 164.6

Tab.3

Wrinkle change on process of dyeing and finishing"

试样 折皱回复角/(°)
未经液氨处理 液氨处理
二次预定形织物 159.9 166.45
染色织物 154.1 174.90
亲水整理织物 186.1 196.90
成品织物 218.0 252.30

Tab.4

Surface characteristics change after liquid ammonia treatment"

处理
前后 		挠曲功/
(cN·mm·rad) 		压缩功/
(cN·mm) 		压缩恢
复率/% 		压缩刚度/
(cN·mm-3) 		热导率/(W·(m·℃)-1) 最大热
导率/
(W·mm-2) 		表面粗糙
度振幅/
μm 		表面粗糙
度波长/
mm 		表面摩
擦因数
压缩时 恢复时
未处理 1 049.06 242.40 0.84 1 397.25 54.46 55.28 1 632.59 30.52 1.54 0.29
处理后 1 023.10 237.74 0.80 1 400.89 53.73 53.84 1 585.72 30.53 1.37 0.28

Tab.5

Subjective characteristics change after liquid ammonia treatment"

手感 织物综合手感值
未经液氨处理 液氨处理
平滑感 0.41 0.43
柔软感 0.29 0.29
温暖感 0.45 0.46
综合感 0.39 0.4
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