Polyester fiber dyeing liquid and dyeing process thereof

Abstract

The invention relates to a polyester fiber dyeing liquid and a dyeing process thereof. The polyester dyeing liquid comprises a macromolecular film forming agent, a dye and activated water; particles of the polyester dyeing liquid are ultrasonically crushed by using ultrasonic waves, and the high-stability polyester dyeing liquid with the particle size of one micron or less is obtained. Particles of the polyester dyeing liquid are ultrasonically crushed through ultrasonic waves, so that the absorption of the dye on the surface of fibers is accelerated, the dyeing rate of the fibers is improved,the activity of the fiber amorphous region chain segment is increased, and the bonding effect of the dyeing liquid and the fibers is comprehensively improved; the invention also provides the dyeing process of the dye; and the dye dyeing process is good in dyeing effect, low in energy consumption, less in pollution emission, and energy-saving and environment-friendly, and the dyeing quality reaches the national standard.

Description

technical field [0001] The invention belongs to the field of textile printing and dyeing, and in particular relates to a polyester fiber dyeing solution and a dyeing process thereof. Background technique [0002] Polyester fiber is a kind of hydrophobic fiber. Its macromolecules are densely arranged, its glass transition temperature is high, its crystallinity is high, and its structure is compact. The structure lacks active groups combined with dyes, and its polarity is small, so it is difficult to dye. The dyeability is poor, and the dye molecules are not easy to enter the fiber. Polyester fabrics are usually dyed by high temperature and high pressure, and a small amount of heat-melt dyeing is used. [0003] The conventional high-temperature and high-pressure dyeing method for polyester is to dye in a closed dyeing device with a temperature higher than 100°C. There are the following disadvantages: (1) Due to factors such as dyeing mechanical properties, heating speed duri...

AI Technical Summary

Problems solved by technology

There are the following disadvantages: (1) 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 dyed product will be damaged due to poor compatibility of the dye. Cause color flower, color spot, streak and other dyeing defects, affect the quality

(2) A large amount of water resources are consumed in the entire dyeing process, and the dyeing pollutes the environment seriously. It is difficult to recycle the wastewater after dyeing, and the cost is high

[0005] Both of these two dyeing processes result in high energy consumption and high pollution, and there is a cycle of dyeing processing such as pollution first and then treatment.

[0006] The existing polyester fiber dyeing solution has poor contact with the fiber, the dye solution diffuses into the fiber at a high speed, the fiber dyeing rate is low, and the combination effect between the dye solution and the fiber is poor