High-temperature high-pressure dyeing method of polyester fiber textiles

Abstract

The invention relates to a high-temperature high-pressure dyeing method of polyester fiber textiles and belongs to the field of printing and dyeing processing of textiles. According to the dyeing method disclosed by the invention, the polyester fiber textiles are dyed under high-pressure high-temperature conditions by adopting a dyeing solution, which is prepared through mixing a high proportion of alcoholic organic solvent and a small volume of water and disperse dyes, the dispersity of the disperse dyes can be better improved, the utilization ratio of the dyes and the dye uptake of fibers are increased, dyeing defects such as uneven dyeing, dye spots and streaks are avoided, meanwhile, the difficulty of dyeing can be lowered, the dyeing effect is improved, and the quality of dyeing is improved. The problems of the traditional high-temperature high-pressure dyeing process flows of the polyester fiber textiles that the dyeing is difficult, the level dyeability is poor, the water consumption is high, and the pollution is serious are solved. According to the method, the adopted alcoholic organic solvent is safe and non-toxic and is easy to recycle, so that the water consumption of adyeing process is greatly lowered, the drainage of waste liquid is reduced, and thus, the method is safe, energy-saving, sanitary and environmentally friendly.

Description

technical field [0001] The invention relates to a high-temperature and high-pressure dyeing method for polyester textiles, and belongs to the field of textile printing and dyeing processing. Background technique [0002] The conventional polyester high-temperature and high-pressure dyeing method is carried out in a closed dyeing device with a temperature higher than 100 ° C, which belongs to a damp heat dyeing method. This method is usually performed in water. On the one hand, due to factors such as dyeing mechanical properties, heating speed during dyeing, and the performance of disperse dyes, the dispersibility of the dye will be reduced, the dye will undergo secondary aggregation, or the dye will cause color and flowering due to poor compatibility of the dye. Dyeing defects such as stains and stripes will affect the quality. On the other hand, due to the need to consume a large amount of water resources in the entire dyeing process, the dyeing has serious environmental ...

AI Technical Summary

Problems solved by technology

[0004] The open magazine "Tianjin Textile Science and Technology", the second issue of 2007 titled "Application of Ultrasonic Waves in Polyester Fabric Dyeing" mentioned the method of applying ultrasonic waves to polyester fabric dyeing, although this method can indeed gather disperse dyes. The body is smashed to make the dispersion more stable and accelerate the diffusion speed of the disperse dye inside the fiber, but its shortcoming is that it does not fundamentally solve the problems such as color flowers in the polyester dyeing process, and the ultrasonic wave in the polyester dyeing process The application process is complicated, the conditions are harsh, the cost is high, and it is difficult to realize industrialization, and this method does not solve the problem of large water consumption in the dyeing process

Although the method of treating polyester with low-temperature plasma combined with co-solvent before dyeing can indeed achieve the effect of normal-pressure low-temperature dyeing and energy saving of polyester, its disadvantage is that the process is complicated, and the co-solvent used is composed of benzene Methanol, chlorobenzene, dichlorobenzene, etc., which are mostly toxic substances and difficult to recycle

Although it uses ionic liquid as a solvent to dissolve disperse dyes to dye polyester and use alcohol and other organic solvents to recover ionic liquids and dyes after dyeing, it does play a pollution-free and clean role, but its shortcomings are The cost of recovering ionic liquid is high, and the ionic liquid is relatively expensive, and reagents such as wetting agents need to be added

But its shortcoming is that this method does not greatly reduce the amount of water used in the dyeing process, and there may be phenomena such as color flowers in the dyeing process

However, its shortcoming is that the process is only based on the process technology itself, and does not solve the problem of large water consumption