A kind of reactive dye exhaust dyeing process of cotton fabric

A technology for reactive dyes and cotton fabrics, applied in the field of dyeing, can solve the problems of many cationic modification treatment steps, large amount of cations, restricting large-scale use, etc., and achieves improved dyeing rate and color fixation rate, and good color fastness to washing. , the effect of reducing the amount of dyeing wastewater

Active Publication Date: 2019-04-23
ANHUI YAYUAN PRINTING & DYEING CO LTD
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the cationization of cotton fiber is a relatively effective way. Although it can effectively avoid the use of salt, the problem it brings is that the amount of cations is large, and there are many steps in the treatment of cation modification, and the operation is cumbersome.
In addition, people have also developed dyes with multi-reactive groups to increase the probability of reaction between dyes and fibers, but the dyes with multi-reactive groups are expensive, which limits their large-scale use

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of reactive dye exhaust dyeing process of cotton fabric
  • A kind of reactive dye exhaust dyeing process of cotton fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In the present embodiment, a kind of reactive dye exhaust dyeing process of cotton fabric comprises the following steps:

[0022] S1, pretreatment, configure the bleaching solution, the bleaching solution includes: refining agent 1g / L, caustic soda 6g / L, hydrogen peroxide 3g / L, hydrogen peroxide stabilizer 1g / L, put the cotton fabric in according to the bath ratio of 1:10 Put it into the blanching liquid, treat it at 115°C for 5 minutes, and then use the enzyme washing liquid to carry out enzyme washing at 55°C. The enzyme washing liquid includes: pectinase 0.5g / L, cellulase 2g / L, glacial acetic acid 0.5g / L, and finally carry out shaping treatment, the shaping temperature is 160°C, and the speed is 20m / min;

[0023] S2, dyeing, immerse the cotton fabric after S1 pretreatment in the reactive dye solution, the reactive dye solution is formed by adding 0.5g / L reactive dye into water and dehydrated alcohol with a volume ratio of 1:10 obtained from the mixed solution, adju...

Embodiment 2

[0026] In the present embodiment, a kind of reactive dye exhaust dyeing process of cotton fabric comprises the following steps:

[0027] S1, pretreatment, configure the bleaching solution, the bleaching solution includes: refining agent 2g / L, caustic soda 2g / L, hydrogen peroxide 8g / L, hydrogen peroxide stabilizer 0.5g / L, according to the bath ratio of 1:15 cotton fabric Put it into the bleaching solution, treat it at 105°C for 30 minutes, and then use the enzyme washing solution to perform enzyme washing at 45°C. The enzyme washing solution includes: pectinase 1g / L, cellulase 1g / L, glacial acetic acid 1g / L L, the final setting treatment, the setting temperature is 150 ℃, and the speed is 30m / min;

[0028]S2, dyeing, immerse the cotton fabric after S1 pretreatment in reactive dye solution, described reactive dye solution is the mixing that the reactive dye of 2.5g / L is added into the water and acetone that volume ratio is 1:5 to form Obtained from the solution, adjust the bath...

Embodiment 3

[0031] In the present embodiment, a kind of reactive dye exhaust dyeing process of cotton fabric comprises the following steps:

[0032] S1, pretreatment, configure the bleaching solution, the bleaching solution includes: refining agent 1.5g / L, caustic soda 4g / L, hydrogen peroxide 5g / L, hydrogen peroxide stabilizer 0.7g / L, according to the liquor ratio of 1:12 cotton Put the fabric into the bleaching solution, treat it at 110°C for 15 minutes, and then use the enzyme washing liquid to carry out enzyme washing at 50°C. The enzyme washing liquid includes: pectinase 0.7g / L, cellulase 1.5g / L, ice Acetic acid 0.8g / L, final setting treatment, setting temperature is 155 ℃, speed is 25m / min;

[0033] S2, dyeing, immerse the cotton fabric after S1 pretreatment in reactive dye solution, described reactive dye solution is to form by adding the reactive dye of 1.5g / L volume ratio to be 1:7 water and dehydrated alcohol obtained from the mixed solution, adjust the bath ratio to 1:15, enter...

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
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a reactive dye dip-dyeing technology of cotton fabric, comprising the following steps: S1, pretreatment: carrying out scouring and bleaching treatment on cotton fabric, and successively carrying out enzyme washing and sizing; S2, dyeing: immersing cotton fabric into reactive dye liquor, dyeing at 20-30 DEG C, heating to 70-100 DEG C at the speed of 2-3 DEG C / min, adding 1-5 g / L of soda ash according to volume of the reactive dye liquor, carrying out thermal insulation at the fixing temperature of 40-100 DEG C for 5-25 min, adding 5-20 g / L of chitosan quaternary ammonium salt according to volume of the reactive dye liquor, carrying out thermal insulation for 30-60 min, and finally cooling to room temperature; and S3, aftertreatment: washing the cotton fabric, soaping, washing, and air-drying. The reactive dye dip-dyeing technology of cotton fabric has advantages of high fixation rate and good level-dyeing property. In addition, the technology is simple. By the technology, dye wastewater can be greatly reduced, and the environment is protected.

Description

technical field [0001] The invention relates to the technical field of dyeing, in particular to a reactive dye exhaust dyeing process for cotton fabrics. Background technique [0002] Reactive dyes are named because the dye molecules contain reactive groups that react with fibers, and can also be called reactive dyes. Reactive dyes are the most important type of dyes for cellulose fiber dyeing due to their bright color, complete chromatogram, and excellent wet fastness. However, the dyeing fixation rate of reactive dyes is low, and the utilization rate of dyes is not high, especially for deep dyeing. When the dye concentration is greater than 3% o.w.f.), the color fixation rate of the dye is generally around 50-80%, that is to say, 20-50% of the reactive dye does not react with the fiber and is wasted. Waste increases the cost, and it is difficult to treat the discharged high-color wastewater, which is not conducive to environmental protection. [0003] In the traditional ...

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/38D06P1/673D06P1/66D06P3/66D06L4/13D06M11/38D06M16/00C08B37/08D06M101/06
CPCC08B37/003D06M11/38D06M16/003D06M2101/06D06P1/38D06P1/66D06P1/6735D06P3/66
Inventor 潘学东
Owner ANHUI YAYUAN PRINTING & DYEING CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap