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Pretreatment, modification and dyeing one-bath one-step processing method for cotton fabric

A processing method and fabric technology, applied in the field of dyeing and finishing, can solve the problems of not meeting the requirements of energy saving and emission reduction, high water and energy consumption, and high production cost, and achieve the effects of excellent dyeing fastness, improved production efficiency, and simple and feasible process.

Inactive Publication Date: 2019-01-11
HENAN INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the current salt-free dyeing of cotton woven fabrics requires three-bath and three-step or two-bath and two-step pretreatment, modification and dyeing of the fabric. Not only the process time is long and the efficiency is low, but also water and The energy consumption is huge, the production cost is high, and it does not meet the energy-saving and emission-reduction requirements required by the current printing and dyeing industry. Process dyeing and finishing processing, especially to achieve its excellent color fastness requirements

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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  • Pretreatment, modification and dyeing one-bath one-step processing method for cotton fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A one-bath one-step processing method for pretreatment, modification and dyeing of cotton woven fabrics, the steps are as follows:

[0020] Prepare 5 g / L sodium hydroxide, 8 g / L refining agent (6 g / L sodium dodecylbenzene sulfonate, 2 g / L flat plus O), 10 g / L hydrogen peroxide, 6 g / L stabilizer sodium silicate , 4 g / L cationic modifier WLS and 5 g / L Argazol yellow NF-GR, the cotton woven fabric was put into the above treatment liquid according to the bath ratio of 1:4, under the condition of continuous ultrasonic at 40 ℃ Raise the temperature to 100°C at a rate of 3°C / min, keep it warm for 60 minutes, then cool down to 50°C at a rate of 3°C / min, take out the fabric and wash it with water, neutralize acid, soap, wash with water, and dry.

Embodiment 2

[0022] A one-bath one-step processing method for pretreatment, modification and dyeing of cotton woven fabrics, the steps are as follows:

[0023] Prepare 0.5 g / L potassium hydroxide, 10 g / L refining agent (7 g / L sodium dodecyl sulfonate, 3 g / L flat plus O), 3 g / L hydrogen peroxide, 2 g / L stabilizer sodium phytate A treatment solution consisting of 10 g / L cationic modifier PECH-amine and 0.2 g / L Argazol red NF-3B was put into the above treatment solution according to the bath ratio of 1:40 for cotton woven fabrics. Raise the temperature at 40°C, raise the temperature to 80°C at a rate of 0.4°C / min, keep it warm for 100 minutes, then cool down to 60°C at a rate of 3°C / min, take out the fabric and wash it with water, acid neutralization, soaping, water washing, and drying.

Embodiment 3

[0025] A one-bath one-step processing method for pretreatment, modification and dyeing of cotton woven fabrics, characterized in that:

[0026] Prepare 20 g / L sodium carbonate, 2 g / L refining agent (1.5 g / L fatty acid methyl ester ethoxylate sodium sulfonate, 0.5 g / L lauryl polyoxyethylene polyoxypropylene block polyether), 20 g / L Hydrogen peroxide, 10 g / L stabilizer sodium pyrophosphate, 15 g / L modifier LY-60 and 7 g / L Argazol emerald green NF-2G were used to treat cotton woven fabrics at a bath ratio of 1:20. In the above-mentioned treatment solution, under continuous ultrasonic conditions, the temperature was raised to 40°C, raised to 85°C at a rate of 0.9°C / min, kept at a temperature of 20 minutes, and then cooled to 40°C at a rate of 3°C / min, and the fabric was taken out to be fully washed with water and acid neutralized. , soaping, washing, drying.

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 pretreatment, modification and dyeing one-bath one-step processing method for a cotton fabric. The cotton woven fabric is ultrasonically treated in a treatment solution composed of an alkali dye, a refining agent, hydrogen peroxide, a modifier and a neutral fixing reactive dye to complete desizing, scouring, bleaching, cationic modification and dyeing of the cotton wovenfabric, so the pretreatment, modification and reactive dyeing of the cotton woven fabric are completed in one bath, and the reactive dyeing has an excellent dyeing fastness without adding a salt. Themethod realizes the pretreatment (desizing, scouring and bleaching), cation modification and dyeing one-bath one-step processing of the cotton fabric, so the time is saved, the production efficiency is improved, and the obtained dyed cotton woven fabric has an excellent dyeing fastness.

Description

technical field [0001] The invention belongs to the technical field of dyeing and finishing, and in particular relates to a one-bath one-step processing method for pretreatment, modification and dyeing of cotton woven fabrics. Background technique [0002] Cotton woven fabric is one of the most commonly used textile fabrics at present. It has excellent hygroscopicity and soft feel. It is the first choice for shirts, suits, T-shirts, sports fabrics, bedding, tooling and other apparel fabrics. Desizing, scouring and bleaching are often required before dyeing, and scouring and bleaching are also required before dyeing cotton knitted fabrics. Reactive dyes are the most important dyes for dyeing cotton woven fabrics. However, due to the low affinity of reactive dyes to cotton fibers, a large amount of neutral electrolytes are generally required to be added during the dyeing process. Dyeing and finishing workers often use cationization of cotton woven fabrics. The modified method...

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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IPC IPC(8): D06P1/38D06P1/673D06P1/62D06P1/44D06P1/00D06P3/66
CPCD06P1/0032D06P1/38D06P1/445D06P1/625D06P1/673D06P1/6735D06P1/67383D06P3/66
Inventor 曹机良黄海涛张海霞贾琳王有权庆智斌
Owner HENAN INST OF ENG
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