Dyeing method using waste edible oil as dyeing solvent

A technology of waste cooking oil and dyeing method, which is applied in the ecological and environmental dyeing of textiles, and the dyeing field of waste cooking oil as a dyeing solvent, which can solve the problems of organic solvent safety hazards, complex recycling systems, and biological hazards in water, and achieve saving dyeing Use water, easy to collect, and achieve the effect of repeated reuse

Active Publication Date: 2021-03-23
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the method of using DMSO / DMC as a completely anhydrous dyeing system as a solvent has the following problems: 1. The mixed solvent after dyeing needs a complex recycling system; 2. The residual organic solvent will bring safety hazards
If a small amount of water and organic solvents such as octane, decamethylcyclopentasiloxane or silicone oil are used as solvents for dyeing, there are the following problems: 1. Octane is derived from petrochemical products and is non-degradable, and its flash point is only 13°C. Huge potential safety hazard; 2. Decamethylcyclopentasiloxane, silicone oil, etc. are also petrochemical products and cannot be degraded. With the accumulation of such products in water bodies, they will cause serious harm to aquatic organisms

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 10g of pure cotton plain fabric (deboiled and bleached 40×40, 144×85, 135g / m 2 ) soaked in 40g / L sodium carbonate solution at room temperature for 1h, then dipped twice and rolled twice on the paddle car, and the liquid-carrying rate was controlled to be 100%. Disperse 0.3 g of CI Reactive Red 120 in 200 mL of waste cooking oil. The fabric after padding is immersed in the dyeing, kept at 40°C for 60 minutes, then heated up to 70°C at 2°C / min and dyed for 60 minutes. The dyed fabric is washed in the following way: washing at room temperature × 10min; soaping at 95°C × 10min; washing at 95°C × 10min; washing at room temperature × 10min, the bath ratio is 1:30, the concentration of soap flakes: 1g / L, the concentration of sodium carbonate : 1g / L to obtain a dyed fabric.

[0030] Comparison of dyeing results between waste edible oil dyeing system and water dyeing system under the same dye dosage:

[0031] Coloring system Fixation rate K / S value water dye...

Embodiment 2

[0033] 10g of pure cotton plain fabric (deboiled and bleached 40×40, 144×85, 135g / m 2 ) soaked in 20g / L sodium carbonate solution at room temperature for 1h, then soaked twice and rolled twice on the paddle car, and the liquid-carrying rate was controlled to be 100%. Disperse 0.3 g of CI Reactive Blue 222 in 100 mL of waste cooking oil. The fabric after padding is immersed in dyeing, kept at 30°C for 30 minutes, then heated to 60°C at 2°C / min, and dyed at 60°C for 45 minutes. The dyed fabric is washed in the following way: washing at room temperature × 10min; soaping at 95°C × 10min; washing at 95°C × 10min; washing at room temperature × 10min, the bath ratio is 1:30, the concentration of soap flakes: 1g / L, the concentration of sodium carbonate : 1g / L to obtain a dyed fabric.

[0034] Comparison of dyeing results between waste edible oil dyeing system and water dyeing system under the same dye dosage:

[0035] Coloring system Fixation rate K / S value water ...

Embodiment 3

[0037] 10g of pure cotton plain fabric (deboiled and bleached 40×40, 144×85, 135g / m 2 ) soaked in 10g / L sodium carbonate solution at room temperature for 1h, then dipped twice and rolled twice on the paddle car, and the liquid-carrying rate was controlled to be 100%. Disperse 0.3 g of CI Reactive Red 23 in 100 mL of waste cooking oil. The fabric after padding is immersed in dyeing, kept at 25°C for 60 minutes, then heated to 50°C at 2°C / min, and dyed at 50°C for 30 minutes. The dyed fabric is washed in the following way: washing at room temperature × 10min; soaping at 95°C × 10min; washing at 95°C × 10min; washing at room temperature × 10min, the bath ratio is 1:30, the concentration of soap flakes: 1g / L, the concentration of sodium carbonate : 1g / L to obtain a dyed fabric.

[0038] Comparison of dyeing results between waste edible oil dyeing system and water dyeing system under the same dye dosage:

[0039] Coloring system Fixation rate K / S value water dy...

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Abstract

The invention discloses a dyeing method using waste cooking oil as a dyeing solvent. The method comprises the following steps that (1) a fabric is put into pretreatment liquid so that the fabric is fully swelled; then, the mangle expression of the fabric is controlled through a padder; (2) the fabric after the padding is soaked into the waste cooking oil dispersed with dye accounting for 1 to 15 percent of the weight of the fabric; adsorption and color fixation are completed under the condition of 10 to 100 DEG C; (3) through padding, the excessive waste cooking oil on the fabric is removed; waste cooking oil collected in a padding groove and waste cooking oil in a dyeing bath are cyclically used; the fabric after the padding is washed by water to obtain a dyed fabric. The dyeing method has the advantages that the utilization rate of dye is high; the adsorption rate is about 100 percent; the color fixation rate is 20 to 40 percent higher than that of the traditional dyeing. The dyeingprocess is based on the principle that similar substances dissolve in each other; the characteristic that the dye can be used to easily get rid of oil and enter the water is utilized, so that completesalt-free dyeing is realized.

Description

technical field [0001] The invention belongs to the technical field of textiles, and relates to an ecological and environment-friendly dyeing method of textiles, in particular to a dyeing method using waste cooking oil as a dyeing solvent. Background technique [0002] Textiles, especially cotton fabrics, are usually dyed with reactive dyes, and a large amount of water is consumed during the dyeing process. At the same time, more than 30% of hydrolyzed dyes, a large amount of inorganic salts used for dyeing promotion and alkalis for color fixation are produced after dyeing. It will become sewage, and high water consumption and high wastewater treatment will bring greater cost pressure to production enterprises. This is an insurmountable bottleneck in reactive dyeing for a long time. In order to solve this problem, the current research is more on non-aqueous medium dyeing, such as supercritical carbon dioxide dyeing and organic solvent dyeing. [0003] Supercritical carbon d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/00D06P1/38D06P1/39D06P3/66D06P3/10
CPCD06P1/00D06P1/38D06P1/39D06P3/10D06P3/66
Inventor 刘林云母炳男李蔚徐荷澜
Owner JIANGNAN UNIV
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