One-step supercritical CO2 color matching of polyester with dye mixtures
One-step supercritical CO2 color matching of polyester with dye mixtures
复制标题
聚酯与染料混合物的一步超临界 CO2 配色
DOI：
10.1016/j.jcou.2020.101396
复制
发表时间：
2021-02-01
影响因子：
7.7
通讯作者：
Zheng, Laijiu
中科院分区：
文献类型：
--
作者：
Gong, Daixuan;Jing, Xiandong;Zheng, Laijiu
超临界CO2染色以其无水、零排放、染色流程短等优点成为替代高污染水性染料染色工艺的重要候选工艺之一。虽然用三色分散染料对涤纶进行超临界CO2染色已获得成功，但由于不同染料之间的相容性和工艺复杂，试图通过染色获得更多颜色的尝试大多失败。采用分散红54、分散蓝79和分散红167对涤纶织物进行超临界CO2一浴法染色。研究了这三种分散染料的配伍性和拼色性。上染速率曲线和增浓曲线的增长趋势相似，表明相容性良好。此外，通过在超临界CO2中使用混合比为1：1和1：3的分散红54和分散蓝79的染料混合物，获得商业上可接受的黑色和深蓝色色调。通过在超临界CO2中加入1：1混合比的分散红167和分散蓝79，在聚酯样品上出现深紫色色调。色调角的轻微波动也显示出染色织物的稳定色调和优异的再现性。上述研究为超临界CO2染色的清洁工业生产提供了重要的数据支持。
Supercritical CO2 dyeing is becoming one of the most important candidates for replacing the high-pollution water-based dyeing procedure because of its no water, zero waste emission and short dyeing process. Although supercritical CO2 dyeing for polyester has been realized successfully with trichromatic disperse dyes, attempts to gain more color through dyeing have mostly failed due to compatibility between different dyes and complicated process. The paper presents a one-bath dyeing of polyester fabrics with Disperse Red 54, Disperse Blue 79 and Disperse Red 167 in supercritical CO2. Compatibility and color matching properties of these three disperse dyes are investigated. Similar increase trends of the dyeing rate curves and the build-up curves indicate satisfactory compatibility. Moreover, commercially acceptable tones of black and dark blue are obtained by using dye mixtures of Disperse Red 54 and Disperse Blue 79 with a mixing ratio of 1:1 and 1:3 in supercritical CO2. By adding a 1:1 mixing ratio of Disperse Red 167 and Disperse Blue 79 in supercritical CO2, dark purple tone appears on the polyester samples. Slightly fluctuating hue angles also show stable tones and excellent reproducibility for the dyed fabrics. The above investigation provides an important data support for the cleaner industrial production of supercritical CO2 dyeing.