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Dyeing process of pure cotton fabric

A pure cotton fabric and process technology, applied in the field of high fixation rate salt-free dyeing process, can solve the problems of large sewage discharge, high equipment price, hidden danger of equipment safety, etc., and achieves harmless environment and human health, easy recovery and recycling The effect of utilizing and saving water resources

Active Publication Date: 2012-12-26
HAINING GREEN UNIVERSE TEXTILE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned traditional dyeing process has the following problems: the utilization rate of dyestuff is low, the amount of electrolyte is large, and thus the discharge of sewage is large
However, this method is not suitable for the dyeing of natural fibers with hydrophilic dyes; moreover, because it needs to use very high pressure, there are unfavorable factors such as high equipment prices and excessive one-time investment, and it also faces potential safety hazards for high-pressure equipment. Incomplete variety of dyestuffs, difficulty in cleaning and replacing equipment, etc.
Therefore, industrialization has not yet been achieved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Dyeing process of pure cotton fabric
  • Dyeing process of pure cotton fabric
  • Dyeing process of pure cotton fabric

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0034] 1. Fabric dyeing pretreatment

[0035] 10g pure cotton fabric with 110g / L Na 2 CO 3 After full swelling, control the squeeze rate to about 180%, and wait for dyeing;

[0036] 2. Preparation of reactive dye / D5 suspension system

[0037]Weigh 0.2g of Active Dairy Cotton Brilliant Red K-4BL, grind it in a ball mill for 2 hours, add 1.8g of ethanol, and after grinding for 1 hour, take out the mixture of dye and ethanol, add 500g of D5, and shear at high speed for 5 minutes. The rotation speed is 600r / min, and the dye / D5 suspension system is ready for use;

[0038] 3. Fabric dyeing

[0039] Take the pretreated pure cotton fabric and immerse it in the dyeing bath of dye / D5 suspension prepared in step 2, dye at room temperature for 40 minutes, then slowly heat up to 70-110°C within 15 minutes, and solidify at 70-110°C Dye for 10-60 minutes, and finally lower the temperature to room temperature to complete the dyeing. Its process curve is as figure 1 shown.

[0040] R...

example 2

[0050] 1. Fabric dyeing pretreatment

[0051] 10g pure cotton fabric with 130g / L Na 2 CO 3 After full swelling, control the squeeze rate to about 180%, and wait for dyeing;

[0052] 2. Preparation of reactive dye / D5 suspension system

[0053] Weigh 0.4g of reactive dark blue M-2GE (C.I. reactive blue 194) and grind it in a ball mill for 2 hours, add 3.6g of ethanol, after grinding for 1 hour, take out the mixture of dye and ethanol, add 500g of D5, high-speed shear for 5min, high-speed shear The speed of cutting is 600r / min, and the dye / D5 suspension system is ready for use;

[0054] 3. Fabric dyeing

[0055] Take the pretreated pure cotton fabric and immerse it in the dyeing bath of the dye / D5 suspension prepared in step 2, dye it at room temperature for 40 minutes, then slowly raise the temperature to 40-80°C within 15 minutes, and solidify at 40-80°C. Dye for 10-60 minutes, and finally lower the temperature to room temperature to complete the dyeing.

[0056] Reactiv...

example 3

[0066] 1. Fabric dyeing pretreatment

[0067] 10g pure cotton fabric with 110 g / L Na 2 CO 3 After full swelling, control the squeeze rate to about 180%, and wait for dyeing;

[0068] 2. Preparation of reactive dye / D5 suspension system

[0069] Weigh 0.8g of active Dai Li cotton bright red K-4BL, grind it in a ball mill for 2 hours, add 7.2g of ethanol, after grinding for 1 hour, take out the mixture of dye and ethanol, add 500g of D5, and shear at high speed for 5min. The rotation speed is 600r / min, and the dye / D5 suspension system is ready for use;

[0070] 3. Fabric dyeing

[0071] Take the pretreated pure cotton fabric and immerse it in the dyeing bath of the dye / D5 suspension prepared in step 2, dye at room temperature for 40 minutes, then slowly heat up to 70-110°C within 15 minutes, and fix the color at 70-110°C for 10 minutes -60min Finally, lower the temperature to room temperature to complete the dyeing.

[0072] Reactive dye dyeing experimental process formula...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a dyeing process of a pure cotton fabric, which comprises the following steps: a. taking one mass part of pure cotton fabric to be dyed; b. grinding a powdery reactive dye occupying 2-8% of the total mass of the fabric in a ball grinding mill for 2h, adding ethanol and grinding for 1h, wherein the mass of ethanol is nine times of that of the powdery reactive dye; c. adding decamethylcyclopentasiloxane, high-speed cutting for 5min at a rotating speed of 600r / min, and preparing a powdery reactive dye / decamethylcyclopentasiloxane suspension system, wherein the mass of the decamethylcyclopentasiloxane is 50 times of the total mass of the fabric; d. pretreating the pure cotton fabric to be dyed in an alkali solution of 1-130g / L so as to enable the pure cotton fabric to fully swell, and controlling the fabric liquid carrying rate to be 100-220% through a rolling machine; and e. immersing the treated fabric into the powdery reactive dye / decamethylcyclopentasiloxane suspension system, dyeing for 40min at normal temperature, slowly rising the temperature to 70-110 DEG C within 15min, fixing color for 10-60 min at the temperature of 70-110 DEG C, and finally reducing the temperature to the normal temperature to finish dyeing. The dyeing process disclosed by the invention has the advantages of high dyeing fixation rate, environmental-protection and no pollution.

Description

technical field [0001] The invention relates to an ecological and environment-friendly non-aqueous medium dyeing technology for textiles, in particular to a high fixation rate salt-free dyeing process of cotton fibers in a reactive dye / decamethylcyclopentasiloxane suspension system. Background technique [0002] At present, the dyeing of cotton fiber is mainly carried out in water medium with reactive dyes. The specific dyeing process is as follows: 1. Process formula table: [0003] [0004] 2. Fabric dyeing: Dissolve dye particles (0.02g) in non-ionized water (bath ratio: 1:20) at room temperature to prepare a dye solution, and slowly raise the temperature to 90°C. After the temperature reached 90°C, the timer was started and untreated fabric (1 g) was added to the dye liquor. After 10 minutes, add half of sodium bicarbonate (0.6g) and keep stirring the fabric to make it fully and evenly contact with the fabric. After another 10 minutes, add the remaining half of sodiu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/38D06P3/66D06P1/651
Inventor 刘今强査金英张祥陈维军张云黄昊郭溢鑫方雨婷
Owner HAINING GREEN UNIVERSE TEXTILE TECH CO LTD
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