应用环保型还原剂的硫化黑染色工艺

doi:10.13475/j.fzxb.20190905306

摘要/Abstract

摘要：

为解决传统硫化黑染料染色污染大、染色工艺不稳定等问题,以复合还原剂D作为硫化黑BR染色还原剂对棉纱进行染色,并与传统硫化碱的染色性能和清洁性进行对比。分析了硫化黑BR质量浓度、氢氧化钠质量浓度、复合还原剂D质量浓度、染色温度对染色性能的影响。结果表明:在硫化黑BR质量浓度为60 g/L、氢氧化钠质量浓度为20 g/L、复合还原剂D质量浓度为19 g/L、染色温度为95 ℃条件下,染色后纱线表观色深(K/S)值为46.88,耐皂洗牢度可达到4~5级,干摩擦牢度为4级,湿摩擦牢度为2级;将复合还原剂D与传统硫化碱进行对比,其染色后纱线K/S值优于硫化碱工艺,染液中还原性硫元素降低78.0%,机台废液中化学需氧量降低76.4%。

关键词: 棉纱, 硫化染料, 复合还原剂, 染色性能, 环保型还原剂

Abstract:

In order to solve the serious polluting and unstable dyeing in the traditional sulfur black dyeing process, the composite reducing agent D was used as a sulfur black BR reducing agent to dye cotton yarns, and the dyeing performance and cleanliness of traditional alkali sodium were compared. The effects of mass concentrations of sulfur black BR, sodium hydroxide, composite reducing agent D, and dyeing temperature on the dyeing properties were analyzed. The experimental results show that under the conditions of mass concentrations of sulfur black BR 60 g/L, sodium hydroxide 20 g/L, composite reducing agent D 19 g/L, and dyeing temperature 95 ℃, the apparent color depth (K/S)value of the yarn is 46.88, the soaping fastness reaches 4-5, the dry rubbing fastness is 4 and the wet rubbing fastness is 2. The composite reducing agent D as a reducing agent is compared with the traditional sodium sulfide, and the K/S value of the yarn dyed with composite reducing agent D is better than that of with alkali sulfide process. The reducing sulfur element in the dyeing solution is reduced by 78.0%, and the chemical oxygen demand in the machine waste solution is reduced by 76.4%.

Key words: cotton yarn, sulphur dyes, composite reducing agent, dyeing property, environment friendly reducing agent

中图分类号:

TS193.634

李瑞卿, 王伟, 魏炳举, 周长文, 张淑桃. 应用环保型还原剂的硫化黑染色工艺[J]. 纺织学报, 2020, 41(08): 50-54.

LI Ruiqing, WANG Wei, WEI Bingju, ZHOU Changwen, ZHANG Shutao. Sulfur black dyeing process with environment friendly reducing agent[J]. Journal of Textile Research, 2020, 41(08): 50-54.

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还原温度/℃	还原电位/mV	还原温度/℃	还原电位/mV
50	-690	85	-677
60	-688	90	-676
70	-686	95	-672
80	-679	100	-668

还原剂名称	染液起始电位/mV	K/S值
复合还原剂D	-715	46.88
硫化碱	-705	36.74

还原剂名称	染液中还原性硫质量分数/%	废液		废气中硫化氢质量浓度/ (mg·m^-3)
还原剂名称	染液中还原性硫质量分数/%	COD值/ (mg·L^-1)	硫质量浓度/ (mg·L^-1)	废气中硫化氢质量浓度/ (mg·m^-3)
复合还原剂D	9.0	4 360	13.6	0.116
硫化碱	41.0	18 500	53.3	0.414
降低百分率/%	78.0	76.4	74.5	72.0