纺织学报 ›› 2016, Vol. 37 ›› Issue (07): 49-54.

• 纺织工程 • 上一篇    下一篇

黑牦牛绒氧化脱色工艺优化及其可纺性

  

  • 收稿日期:2015-06-30 修回日期:2016-03-31 出版日期:2016-07-15 发布日期:2016-07-15

Optimum oxidation bleaching condition and spinnability of black yak wool

  • Received:2015-06-30 Revised:2016-03-31 Online:2016-07-15 Published:2016-07-15

摘要:

针对黑牦牛绒氧化脱色对纤维性能及纺纱性能的影响,采用正交实验,对其氧化脱色条件进行了优化,得到最佳工艺条件:H2O2 浓度为25 g/L,焦磷酸钠浓度为5 g/L,温度75 ℃,时间90 min,溶液pH值为8.5。通过对比分析脱色和未脱色纤维性能,并分别采用全聚纺和四罗拉网格圈紧密纺纺制20.83 tex纱线进行性能测试,进一步研究脱色牦牛绒纤维的可纺性能。结果表明:脱色后,牦牛绒纤维的物理机械性能出现了不同程度的下降,表面鳞片结构破损;当采用同一方法纺相同支数的纱线时,脱色牛绒较原色牦牛绒纱线条干和强伸性变差;采用不同方法纺相同线密度纱线时,全聚纺纺制的脱色牛绒纱线较四罗拉网格圈紧密纺强力低、条干优。

关键词: 黑牦牛绒, 氧化脱色优化, 可纺性, 纱线强力

Abstract:

In order to investigate the influence of the oxidation bleaching condition on black yak fiber properties and spinnabilities. Firstly, the oxidation bleaching condition of black yak fibers was optimized by orthogonal experiment, and the optimum oxidation bleaching condition were presented, hydrogen peroxide concentration 25 g/L, sodium pyrophosphate concentration 5 g/L, temperature 75 ℃, time 90 min and PH value of the solution 8.5. Secondly, by comparing the bleached fiber properties with unbleached fibers, 20.83 tex yak fiber yarns was spun on the condensed compact spinning system and the four rollers lattice apron compact spinning system, and the spinnabilities of bleached yak fibers were studied further. The results show that after bleaching, the physical and mechanical properties of yak fibers decreased and the scales of bleached yak fibers were damaged. When the same count yarns were spun on the same spinning system, the evenness, strength and elongation performances of bleach yak fiber yarns were poorer than unbleached. When the same count yarns were spun on different spinning systems, the evenness of bleached yak fiber yarns spun on the condensed compact spinning system were better that spun on the four rollers lattice apron compact spinning system, but the strength and elongation performances were poorer.

中图分类号: 

  • TS102.3
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