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Anti-staining dyeing method of polyamide-cotton fabric

A dyeing method and anti-staining technology, which is applied in the field of anti-staining of nylon and cotton dyed with reactive dyes, can solve the problems of reducing the color fixation rate, increasing the color and luster of dyeing wastewater and the amount of COD, and affecting the utilization rate of dyes, etc., so as to improve coloring High efficiency, good nylon jacquard whiteness, anti-staining and leveling effect, reducing COD amount and color depth

Active Publication Date: 2015-07-22
浙江劲光纺织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing methods generally improve the anti-staining effect by using special additives, such as commonly used dispersants MF, NNO and nylon resists to alleviate the coloring of nylon dyed by reactive dyes. It will reduce the color fixation rate, affect the utilization rate of dyes, increase the color of dyeing wastewater and the amount of COD, and bring certain pressure to environmental protection; at the same time, some auxiliaries with dispersing, solubilizing and slowing dyeing functions are more or less Contains less APEO. Since the potential harm of APEO to the environment has been extensively researched and demonstrated, all countries have formulated relevant standards and regulations to limit the content of APEO, and it is necessary to effectively control the content of APEO in the printing and dyeing industry. For this reason, only Use less or ban such auxiliaries; and the defects of dyed fabrics due to the characteristics of reactive dyes cannot be avoided, so rational design of dyeing methods has become the goal of everyone's efforts

Method used

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  • Anti-staining dyeing method of polyamide-cotton fabric
  • Anti-staining dyeing method of polyamide-cotton fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Conventional dyeing method: Dye the gray cloth at a temperature of 40°C, and add reactive black 5# dye (dyeing depth: 2.0%) and sodium sulfate (the concentration of sodium sulfate in the dyeing system is 60g / L) in the water bath in sequence. , then heat up to 60°C at a rate of 1°C / min and keep the color for 30 minutes, then add soda ash (the concentration of soda ash in the dyeing system is 20g / L) and keep it for 60 minutes, and finally cool down to 45°C for post-treatment.

[0041] The post-treatment process is as follows: After removing the dyeing residue, wash once with warm water at 40-45°C, then soap with hot water at 95-98°C, and finally wash once with cold water to complete the entire dyeing process.

Embodiment 2

[0043]Dye the gray cloth at a temperature of 40°C, add reactive black 5# dye (the dyeing depth is 2.0%) and sodium sulfate (the concentration of sodium sulfate in the dyeing system is 60g / L) in a water bath to absorb color for 10 minutes , add soda ash (the concentration of soda ash in the dyeing system is 0.05g / L) and keep warm for 30 minutes, then add soda ash (the concentration of soda ash in the dyeing system is 15g / L) and heat up to 50°C at a rate of 1°C / min. After dyeing for 30 minutes, continue to heat up to 70°C at a heating rate of 2°C / min, then keep warm for 15 minutes to complete the dyeing, and then cool down to 45°C for post-treatment.

[0044] The post-treatment process is as follows: After removing the dyeing residue, first wash with warm water at 40-45°C, then add cold water to heat up to 80°C for one wash, then add hot water at 90-95°C for soaping, and finally wash with warm water at 50-55°C Wash once, and remove the residual liquid after each washing to preve...

Embodiment 3

[0046] Dye the gray cloth at a temperature of 40°C, add reactive black 5# dye (the dyeing depth is 2.0%) and sodium sulfate (the concentration of sodium sulfate in the dyeing system is 60g / L) in a water bath, and then add soda ash (The concentration of soda ash in the dyeing system is 15g / L). Raise the temperature at a rate of 1°C / min to 50°C and keep the color for 30 minutes, then continue to heat up to 70°C and keep the temperature for 15 minutes at a rate of 2°C / min. Post-treatment after 45°C.

[0047] The post-treatment process is as follows: After removing the dyeing residue, first wash with warm water at 40-45°C, then add cold water to heat up to 80°C for one wash, then add hot water at 90-95°C for soaping, and finally wash with warm water at 50-55°C Wash once, and remove the residual liquid after each washing to prevent the residual liquid from contaminating again.

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Abstract

The invention discloses an anti-staining dyeing method of cotton-polyamide fabric. The anti-staining dyeing method comprises the following steps: at the temperature of 40 DEG C, sequentially adding a dye and a dyeing auxiliary into fabric; after keeping the temperature for 10 minutes, adding sodium carbonate of 0.05-0.1g / L, controlling the PH value of a dye bath to be 8-9 and keeping the temperature for 30 minutes, and then adding sodium carbonate of 15-20g / L; raising the temperature to be 50 DEG C by the rate of 1DEG C / min, and keeping the temperature for 30 minutes so as to perform color fixation; raising the temperature to be 70 DEG C by the rate of 2DEG C / min, keeping the temperature for 15 minutes, and completing the dying process; reducing the temperature to be 45 DEG C to perform post processing, so as to obtain the dyed fabric. The used dye is an active dye, and the problem of the serious staining of vinyl-sulfone type active dyes on polyamide fabric is mainly solved. The anti-staining dyeing method disclosed by the invention has the advantages that the procedure operation is feasible, the utilization rate of the dyes is high, the color fastness of the dyed fabrics is good, and the like; the anti-staining dyeing method can be applied to the technical field of dying of polyamide-cotton blended fabric.

Description

technical field [0001] The invention relates to an anti-staining method for nylon cotton dyed with reactive dyes. The specific method is to increase the color fixation rate of reactive dyes on cotton in the process of dyeing cotton, and at the same time reduce the staining of reactive dyes on nylon, so as to finally achieve the nylon jacquard retention of dyed fabrics. The purpose of whitening and improving the washing fastness of dyed fabrics. Background technique [0002] Nylon-cotton fabrics currently on the market are widely trusted by consumers due to their excellent wearability, and nylon-cotton blended fabrics have both the moisture absorption and breathability of cotton and the high-strength wear resistance of nylon, and are deeply loved by the public. But at the same time, due to the large difference in the performance of cotton and nylon fibers, such as the use of one-bath dyeing process is more complicated and difficult, and at the same time it cannot meet the par...

Claims

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Application Information

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IPC IPC(8): D06P1/38D06P1/673D06P3/85D06P5/02
Inventor 王国林张薇
Owner 浙江劲光纺织科技有限公司
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