Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (02): 105-109.doi: 10.13475/j.fzxb.20211007105

• Textile Engineering • Previous Articles     Next Articles

Effect of oiling treatment process on Lyocell fiber properties

HUANG Wei, ZHANG Jiayu, ZHUANG Xiaoxiong, ZHANG Dong, LI Ting, CHENG Chunzu(), XU Jigang   

  1. State Key Laboratory of Bio-based Fiber Manufacturing Technology, China Textile Academy, Beijing 100025, China
  • Received:2021-10-26 Revised:2021-11-29 Online:2022-02-15 Published:2022-03-15
  • Contact: CHENG Chunzu E-mail:chunzuc@163.com

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Abstract:

In order to optimize the oiling processing of Lyocell fibers and improve its subsequent processing performance, Lyocell fibers were oiled under the condition of constant temperature leaching and constant pressure pressing. The effects of oil concentration, oil mixing ratio and oil temperature on the film forming, friction performance, antistatic performance and mechanical properties of Lyocell fibers were studied in detail by means of scanning electron microscopy, strength and elongation analysis, friction factor analysis and volume resistance analysis. The results showed that when the oil concentration was 6 g/L, non-ionic surfactant content was 31%, the oil temperature was 65 ℃, the thickness of oil agent layer form on the fiber surface was even and the fiber smoothness was good. The mechanical properties of fiber were excellent. Fiber breaking strength was 3.92 cN/dtex, elongation at break was 11.38%. Antistatic properties and cohesiveness of fibers were best. Volume resistance of fiber was 5.66×109 Ω·cm and cohesiveness between fibers was 223.0 cN.

Key words: Lyocell fiber, oiling treatment, volume resistance, cohesiveness, frictional performance

CLC Number: 

  • TQ340

Tab.1

Different oiling process condition"

试样
编号		 油剂质量
浓度/(g·L-1)		 m(固态L):
m(固态A)		 上油温
度/℃
0# — — —
1# 6 29/71 50
2# 6 29/71 65
3# 6 29/71 80
4# 4 29/71 65
5# 6 29/71 65
6# 8 29/71 65
7# 6 29/71 65
8# 6 31/69 65
9# 6 33/67 65

Fig.1

SEM images of Lyocell fibers treated with different concentrations(×5 000)"

Tab.2

Influence of oil concentration on mechanical properties of Lyocell fiber"

试样
编号		 油剂质量
浓度/(g·L-1)		 含油
率/%		 断裂伸
率/%		 断裂强度/
(cN·dtex-1)
0# 0 0 12.03 4.20
4# 4 0.36 11.62 4.01
5# 6 0.47 11.38 3.92
6# 8 0.56 10.96 3.86

Tab.3

Influence of oil concentration on friction performance of Lyocell Fiber"

试样
编号		 含油
率/%		 纤维与金属间 纤维之间
μs μd μs μd μs/μd
0# - 0.122 8 0.169 0 0.151 8 0.151 4 1.00
4# 0.36 0.125 2 0.177 5 0.156 5 0.150 8 1.04
5# 0.47 0.128 5 0.178 3 0.157 6 0.149 2 1.06
6# 0.56 0.133 5 0.179 0 0.158 6 0.138 6 1.14

Tab.4

Influence of oil mixing ratio on friction performance of Lyocell fiber"

试样
编号		 m(固态L):
m(固态A)		 含油
率/%		 纤维与金属间 纤维之间
μs μd μs μd μs/μd
0# - 0 0.1288 0.1690 0.1518 0.1514 1.00
7# 29:71 0.47 0.1277 0.1699 0.1622 0.1519 1.07
8# 31:69 0.45 0.1262 0.1818 0.1753 0.1521 1.15
9# 33:67 0.47 0.1280 0.1790 0.1618 0.1520 1.06

Tab.5

Influence of oil mixing ratio on volume resistivity of Lyocell fiber"

试样
编号		 m(固态L):
m(固态A)		 含油率/% 体积比电
阻/(Ω·cm)
0# - 0 1.33×1011
7# 29:71 0.47 6.23×1010
8# 31:69 0.45 5.66×109
9# 33:67 0.47 9.84×109

Tab.6

Effect of oiling temperature on friction properties of Lyocell fiber"

试样
编号		 温度/
℃		 含油
率/%		 纤维与金属间 纤维之间
μs μd μs μd μs/μd
0# - - 0.128 8 0.169 0 0.151 8 0.151 4 1.00
1# 50 0.40 0.129 9 0.171 4 0.148 1 0.144 3 1.03
2# 65 0.47 0.128 5 0.170 4 0.149 7 0.142 1 1.15
3# 80 0.53 0.127 5 0.172 2 0.154 8 0.132 3 1.17

Tab.7

Effect of oiling temperature on cohesiveness of Lyocell fiber"

试样
编号		 温度/
℃		 含油
率/%		 体积比电阻/
(Ω·cm)		 抱合
力/cN		 ABS
0# - - 1.33×1011 140.6 -1 820
1# 50 0.40 9.23×1010 175.4 -186
2# 65 0.47 9.85×1010 223.0 -160
3# 80 0.55 9.15×1010 230.2 -165
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