Method for dyeing textile by dye liquor prepared by mutually dissolving organic solvent and water

A technology of organic solvents and textiles, applied in dyeing, textiles and papermaking, etc., can solve the problems of poor economy, toxic substances, solvent loss and other problems of perchlorethylene solvent dyeing, and achieve an increase in the balance dyeing percentage and increase activity , Improve the effect of equilibrium adsorption

Inactive Publication Date: 2013-04-03
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the organic solvent tetrachlorethylene used in this process is a toxic substance and pollutes the environment. At the same time, the solvent is not recovered, and the solvent remaining on the fiber after dyeing will also cause solvent loss, so that the economy of tetrachlorethylene solvent dyeing is not good.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] According to the above process steps: select cotton textiles as the textiles to be dyed, the bath ratio is 1: 25, the weight of the fabric is 2% reactive red B-3BF, the volume fraction is 10% water and the volume fraction is 90% ethanol Mix well and adjust the pH to 7. Cut 1g of cotton textiles, prepare 50g / L of sodium chloride solution, soak the cotton textiles twice in sodium chloride solution, and the pressure of rolling is 10KN, and the rolling speed of textiles is 5 m / min. The liquid rate is 70%. Then put the rolled textiles into a room temperature dyeing machine filled with a dye solution prepared at a temperature of 25°C. The dye solution is gradually heated up to 50°C at a speed of 5°C / min for oscillating dyeing, and the oscillation frequency is 60 times / min. The ethanol in the liquid is recovered by the reflux condensation device during the dyeing process. Add 1mL of sodium carbonate solution to the residual solution of ethanol extracted in the dyeing machine...

Embodiment 2

[0029] According to the above process steps: select cotton textiles as the textiles to be dyed, the bath ratio is 1: 30, and the reactive red B-3BF that is 4% to the fabric, the water with a volume fraction of 30% and the isophthalic acid with a volume fraction of 70% are selected. Mix propanol evenly and adjust the pH to 7. Cut 1g of cotton textiles, prepare 50g / L of sodium sulfate solution, soak the cotton textiles twice in sodium sulfate solution, the pressure of rolling is 25KN, the speed of textiles passing through the rolls is 20 m / min, the rate of entrainment of textiles after rolling 80%. Then put the rolled textiles into a room temperature dyeing machine filled with a dye solution prepared at a temperature of 30°C. The dye solution is gradually heated up to 60°C at a rate of 5°C / min for oscillating dyeing, and the oscillation frequency is 80 times / min. The ethanol in the liquid is recovered by the reflux condensation device during the dyeing process. Add 1mL of sodi...

Embodiment 3

[0031]According to the above process steps: select cotton textiles as the textiles to be dyed, the bath ratio is 1:40, and the direct scarlet 4BS with a weight of 5% to the fabric, water with a volume fraction of 40% and ethanol with a volume fraction of 60% are uniformly mixed , adjust the pH to 7. Cut 1g of cotton textiles, prepare 50g / L sodium chloride solution, soak the cotton textiles twice in the sodium chloride solution, and roll them at a pressure of 35KN. The rolling speed of the textiles is 50 m / min. The liquid rate is 90%. Then put the rolled textiles into a room temperature dyeing machine filled with a dye solution prepared at a temperature of 40°C. The dye solution is gradually heated up to 80°C at a speed of 5°C / min for oscillating dyeing, and the oscillation frequency is 90 times / min. The ethanol in the liquid is recovered by the reflux condensation device during the dyeing process. Add 1mL of sodium carbonate solution to the residual liquid of ethanol extract...

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Abstract

The invention relates to a method for dyeing textile by dye liquor prepared by mutually dissolving organic solvent and water and belongs to the technical field of textile printing and dyeing processing. The dye liquor applies organic solvent soluble in water and lower than water in boiling point, and dye is soluble in water and insoluble in organic solvent, so that effective liquor ratio is lowered, distribution coefficient of dye on fiber is changed, and dye uptake is of dye is increased. Adding the organic solvent allows boiling point of the dye liquor to reduce, energy is saved, water consumption in dyeing process is greatly reduced, the organic solvent can be recycled and reused, and discharge of waste liquor is reduced. The dyeing process includes performing twice-soaking and twice-rolling accelerant solution to textile, and solid accelerant is prevented from being precipitated out at a great amount by being added in dyeing process. The method is low in water consumption, utilization rate of dye is increased, energy consumption is low, the organic solvent can be recycled and reused, and cleaning and dyeing are achieved simultaneously.

Description

technical field [0001] The invention relates to a method for dyeing textiles by using a dye liquor miscible with organic solvents and water, and belongs to the technical field of textile printing and dyeing. Background technique [0002] In the conventional dyeing process, water is used as the carrier of the dye for dyeing. Water is a good solvent, and all the auxiliary agents such as salts and color fixing agents required in the dyeing process can be dissolved in water, so a large amount of water resources are required. However, for reactive dyes, the dye undergoes a hydrolysis reaction in water. During the color fixing process, due to the alkaline condition, the dye will be alkaline hydrolyzed again, which reduces the color fixing efficiency and dye utilization rate. And after using water as the carrier of the dyestuff, it cannot be recycled and reused. After dyeing, a large amount of waste water will be discharged, which seriously pollutes the environment and wastes resou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/92D06P5/02D06P5/10D06P1/673D06P1/00D06P1/38D06P1/39D06P1/16
Inventor 徐卫林郭蕾夏良君程珊王运利
Owner WUHAN TEXTILE UNIV
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