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Dyeing method based on cotton fabric active dye cationic modifier

A cationic modifier and reactive dye technology, which is applied in the dyeing field based on cotton fabric reactive dye cationic modifier, can solve the problems of heavy wastewater treatment load, ecological environment damage, and affecting dyeing performance, so as to increase electrostatic attraction and reduce The effect of the dosage of saline and alkali on improving the dyeing uptake rate

Inactive Publication Date: 2018-02-27
ZHAOQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the above-mentioned prior art because reactive dyes are anionic dyes, and cotton fibers are also negatively charged in the dye bath, there is a large electrostatic repulsion between the two, which affects the dyeing performance, so when dyeing reactive dyes for To improve the dye uptake rate and color fixation rate, it is necessary to add a large amount of inorganic salts to promote dyeing, resulting in the shortcomings and deficiencies of heavy wastewater treatment load, high treatment cost, and serious damage to the ecological environment. The primary purpose of the present invention is to provide a reactive dye based on cotton fabrics. Dyeing method of cationic modifier

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 10g of the scoured cotton fabric was modified at 60°C for 30 minutes in an aqueous sodium glutamate solution with a concentration of 2.0g / L, the bath ratio was 1:15 (kg / L), and then washed and dried. For dyeing, the concentration of RS Brilliant Blue is 1wt%. Sodium carbonate 5g / L, sodium chloride 30g / L, bath ratio 1:15(kg / L). At 60°C, add water and dyes according to the bath ratio, then add sodium carbonate and sodium chloride, then add cotton fabric, keep shaking for 60 minutes, wash with water, pickle with dilute acid (0.5g / L glacial acetic acid), wash with water , and then soaped. The content of JEG soaping agent in the lotion used for soaping is 2g / L, the content of soda ash is 1g / L, the soaping condition is 90°C for 15-20min, and the bath ratio of cotton fiber and lotion is 1:15(kg / L ). Take out, wash in cold water, hot water, cold water successively, dry, obtain dyed cotton fiber.

[0037] Embodiment gained effect: the cotton fabric dyed after modification ha...

Embodiment 2

[0039] 10g of the scoured cotton fabric was modified at 60°C for 30 minutes in an aqueous sodium glutamate solution with a concentration of 2.0g / L, the bath ratio was 1:15 (kg / L), and then washed and dried. For dyeing, the concentration of RS Brilliant Blue is 1wt%. Sodium carbonate 5g / L, sodium chloride 23g / L, liquor ratio 1:15(kg / L). At 60°C, add water and dyes according to the bath ratio, then add sodium carbonate and sodium chloride, then add cotton fabric, keep shaking for 60 minutes, wash with water, pickle with dilute acid (0.5g / L glacial acetic acid), wash with water , and then soaped. The content of JEG soaping agent in the lotion used for soaping is 2g / L, the content of soda ash is 1g / L, the soaping condition is 90°C for 15-20min, and the bath ratio of cotton fiber and lotion is 1:15(kg / L ). Take out, wash in cold water, hot water, cold water successively, dry, obtain dyed cotton fiber.

[0040]Embodiment gained effect: the cotton fabric dyed after modification h...

Embodiment 3

[0042] 10g of the scoured cotton fabric was modified at 60°C for 30 minutes in an aqueous sodium glutamate solution with a concentration of 2.5g / L, the bath ratio was 1:15 (kg / L), and then washed and dried. For dyeing, the concentration of RS Brilliant Blue is 1wt%. Sodium carbonate 5g / L, sodium chloride 30g / L, bath ratio 1:15(kg / L). At 60°C, add water and dyes according to the bath ratio, then add sodium carbonate and sodium chloride, then add cotton fabric, keep shaking for 60 minutes, wash with water, pickle with dilute acid (0.5g / L glacial acetic acid), wash with water , and then soaped. The content of JEG soaping agent in the lotion used for soaping is 2g / L, the content of soda ash is 1g / L, the soaping condition is 90°C for 15-20min, and the bath ratio of cotton fiber and lotion is 1:15(kg / L ). Take out, wash in cold water, hot water, cold water successively, dry, obtain dyed cotton fiber.

[0043] Embodiment gained effect: the cotton fabric dyed after modification ha...

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 belongs to the technical field of dye chemical industry and discloses a dyeing method based on a cotton fabric active dye cationic modifier. The dyeing method comprises the following steps: (1) carrying dyeing treatment by adding cotton fiber into a glutamate aqueous solution or a phenylalanine salt aqueous solution, carrying out temperature-increasing treatment, taking the cotton fiber out, washing the cotton fiber to obtain modified cotton fiber; (2) carrying out dyeing treatment by dyeing the modified cotton fiber according to a conventional process, wherein the content of reactive dye in a dyeing solution is 1-2wt%, the content of sodium carbonate is 5-10g / L, the content of sodium chloride is 23-30g / L, and dyeing for 40-60 minutes under the dyeing condition at the temperature of 50-70 DEG C; and (3) carrying out aftertreatment of the dyed cotton fiber according to the conventional process to obtain the dyed cotton fiber. The method is capable of not changing all the properties of the cotton fabric after carrying out aftertreatment, even obtaining excellent dyeing effect, effectively reducing the consumption of salt and alkali, achieving low-temperature dyeing, achieving environment-friendly dyeing and reducing the cost.

Description

technical field [0001] The invention belongs to the technical field of dye chemical industry, and in particular relates to a dyeing method based on a cotton fabric reactive dye cationic modifier. Background technique [0002] Reactive dyes have the characteristics of good brilliance, easy use, and good color fastness, so they are widely used in fiber dyeing. During the dyeing process, they can form covalent bonds with cellulose fibers and have high color fastness. However, reactive dyes are anionic dyes, and cotton fibers are also negatively charged in the dye bath, so there is a large electrostatic repulsion between the two, which in turn affects the dyeing performance. Reactive dyes have low dyeing rate and fixation rate. Therefore, in the traditional dyeing process, a large amount of inorganic salt needs to be added to reduce the electrostatic repulsion between the dye and cellulose, and improve the dye uptake rate and color fixation rate. However, this process causes se...

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): D06P5/22D06P1/38D06P1/647D06P3/66
CPCD06P5/225D06P1/38D06P1/647D06P3/66
Inventor 吴文胜黄泽铃陈涌董心仪吴佩茹林丽婷姚建宏李志伟郝向英李顺华
Owner ZHAOQING UNIV
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