Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (07): 9-14.doi: 10.13475/j.fzxb.20190802106

• Fiber Materials • Previous Articles     Next Articles

Effect of low refractive resin on structure and properties of spun-dyed viscose fibers

LIU Xi1,2, WANG Dong1,2, ZHANG Liping1,2, LI Min1,2, 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:2019-08-08 Revised:2020-04-13 Online:2020-07-15 Published:2020-07-23
  • Contact: FU Shaohai E-mail:shaohaifu@hotmail.com

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Abstract:

To solve the problem of the pale color, spun-dyed viscose fiber was treated to improve the color depth using low refractive resin. This research investigated the effects of resin type, dosage of resin, rolling ratio, baking time and baking temperature on color brightness (L value), breaking strength and elongation at break of spun-dyed viscose fiber. In addition analytical instruments such as infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy were employed to study varieties of the chemical structures, surface element composition, crystallization performance, surface topography of spun-dyed viscose fibers after resin finishing. The results show that when the dosage of fabric deepening agent, rolling ratio, baking temperature and baking time are set to 80 g/L, 90%, 150 ℃, and 180 s respectively, the L value of the spun-dyed viscose fiber is reduced to 11.84, and the retention rate of breaking strength and elongation at break are 70.62% and 70.11% respectively. After the resin treatment, crystallinity of the spun-dyed viscose fiber decreases and fiber surface becomes smoother, whereas silicon functional groups on fiber surface are increased.

Key words: spun-dyed viscose fiber, low refractive resin, deep finishing, mechanical property

CLC Number: 

  • TS195.6

Fig.1

Finishing mechanism of low refractive resin deepening spun-dyed viscose fiber. (a) Hydrolysis of silicone resin; (b) Condensation of resins; (c) Reaction of resin and fiber"

Tab.1

Effect of type of low refractive index resin on properties of spun-dyed viscose fiber"

树脂名称 L值 断裂强力/cN 断裂伸长率/%
未整理 13.18 3.71 18.40
光亮剂SES-35 13.00 3.07 17.70
光亮剂SFS-36 13.02 3.11 18.20
增深剂S-24 13.09 3.03 17.60
增深增艳剂 13.01 3.01 17.40
织物增深剂EC-CD-R 12.95 3.08 17.40

Tab.2

Effect of dosage of fabric deepening agent on properties of spun-dyed viscose fiber"

EC-CD-R质量
浓度/(g·L-1)		 L值 断裂
强力/cN		 断裂
伸长率/%
50 13.06 3.13 18.80
60 12.95 3.08 18.40
70 12.78 2.99 17.10
80 12.53 2.93 16.60
90 12.53 2.82 15.80
100 12.51 2.70 14.90

Tab.3

Effect of rolling ratio on properties of spun-dyed viscose fiber"

轧余率/% L值 断裂强力/cN 断裂伸长率/%
60 12.60 3.02 17.80
70 12.57 3.00 16.80
80 12.51 2.93 16.60
90 12.42 2.91 16.00
100 12.42 2.79 14.20

Tab.4

Effect of baking time on properties of spun-dyed viscose fiber"

焙烘时间/s L值 断裂强力/cN 断裂伸长率/%
120 12.42 2.91 16.00
150 12.31 2.86 15.60
180 12.19 2.82 14.80
210 12.19 2.75 14.40
240 12.15 2.52 13.20

Tab.5

Effect of baking temperature on properties of spun-dyed viscose fiber"

焙烘温度/℃ L值 断裂强力/cN 断裂伸长率/%
120 12.19 2.82 14.80
130 12.14 2.79 14.20
140 12.05 2.75 13.40
150 11.84 2.62 13.10
160 11.82 2.56 12.60

Fig.2

FT-IR spectra of spun-dyed viscose fiber before and after finishing"

Fig.3

SEM images of spun-dyed viscose fibers after fabric deepening agent EC-CD-R finishing at different mass concentrations"

Fig.4

XRD spectra of spun-dyed viscose fibers after fabric deepening agent EC-CD-R finishing at different mass concentrations"

Fig.5

Surface element of spun-dyed viscose fiber before and after finishing"

Fig.6

C1s spectra of spun-dyed viscose fiber before (a) and after (b) finishing"

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