纯棉针织物KN型活性染料连续染色技术研究

Continuous Dyeing of Cotton Knitted Fabric with KN Reactive Dyes

为提高活性蓝KN-G利用率,减少染色残液的排放,实现生态染色,利用中和法获得水解再生活性染料,再利用再生活性染料和补加原态染料对棉针织物进行一浴两步法连续染色。对原态活性蓝KN-G、水解活性蓝KN-G、水解激活再生染料进行红外光谱测定,对比了原态染料和激活后的染料染色后试样的染色性能。结果表明,激活后的部分染料具有与原态染料不一样的氯原子活性基,多次连续染色试样与原态染料染色试验样品相比,两者试样K/S值同一性较好,且具有良好的色光和耐水洗色牢度,织物耐摩擦色牢度、顶破强力、伸长率基本不变,染色残液可以实现连续11次染色。

In order to increase the utilization rate of reactive dyes blue KN-G and decrease the discharge of its dyeing effluent and realize ecological dyeing and finishing, in this paper, by the neutralization method it obtained regeneration of the hydrolysis reactive dyes, and then added the original reactive dyes KN-G to the dye bath of the regenerated reactive dye to dye cotton fabric with the original dyeing process of one bath two step continuous pro- cess. Reactive dyes were measured by infrared spectroscopy, and the dyeing performance of the dyed fabrics with the original dyes and the dyes after activation were compared. The results show that the part of activated dyestuff has the different chlorinated activated group in comparison of the original dyestuff. The K/S value identity, color characterization, rubbing fastness, washing fastness and the strength amd elongation of the activated dyestuff continuous dyed sample were all satisfied when compared with that of the original dyestuff dyed cotton fabric, and the dyeing raffinate could be reused for 11 times.