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Dyeing method of cellulosic fiber fabric

A technology of cellulose fiber and dyeing method, which is applied in the field of dyeing of cellulose fiber fabrics, can solve the problems of poor soaping fastness and low dyeing rate, and achieve the effects of low production cost, simple process flow and improved adsorption

Inactive Publication Date: 2012-12-12
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for dyeing cellulose fiber fabrics, which solves the problems of low dyeing rate and poor soaping fastness when dyeing cellulose fiber fabrics with reactive dyes.

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 method of cellulosic fiber fabric
  • Dyeing method of cellulosic fiber fabric
  • Dyeing method of cellulosic fiber fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The chitosan solution that mass fraction is respectively 0.4%, 0.8%, 1.2%, is processed fabric by the method for step 1 respectively, then by the reactive dye dyeing method in step 2 and step 3, the fabric after processing is dyed, dyeing Process reference figure 1 , the fabric after dyeing is carried out dyeing performance test, and test result, when chitosan mass fraction is 0.4%, 0.8%, 1.2%, K / S value is respectively 18.5, 21.2, 22.3, it can be known that when chitosan When the mass fraction is about 0.8%, the fabric has the best dyeing depth.

Embodiment 2

[0040] When the chitosan solution with a mass fraction of 0.8% is at 40°C, 60°C, and 80°C, the fabric is treated according to the method of step 1, and then the treated fabric is dyed according to the reactive dye method in step 2 and step 3. The fabric is dyed, and the dyeing process refers to figure 1 , the dyed fabric was tested for dyeing performance. The test results showed that when the chitosan pretreatment temperature was 40°C, 60°C, and 80°C, the K / S values ​​were 19.8, 23.1, and 22.8. It can be seen that when the chitosan When the pretreatment temperature of polysaccharide is about 60℃, the deep dyeing property of the fabric is the best.

Embodiment 3

[0042] With a chitosan solution with a mass fraction of 0.8%, the temperature is 60°C, when the pretreatment temperature is 8min, 16min, and 24min respectively, the fabric is treated according to the method of step 1, and then dyed with reactive dyes in step 2 and step 3 The method is to dye the treated fabric, and the dyeing process refers to figure 1, the fabric after dyeing is carried out dyeing performance test, test result, when chitosan pretreatment time is respectively 8min, 16min, 24min when K / S value is respectively 18.9, 22.7, 22.1, it can be known that when chitosan pretreatment When the treatment time is about 16 minutes, the deepness of the fabric is the best.

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 method of a cellulosic fiber fabric, comprising the following steps of: firstly, performing pretreatment modification on the cellulosic fiber fabric by using chitosan; then, preparing a dye solution; and finally, putting the modified cellulosic fiber fabric in the dye solution for dying. In the dyeing method, the cellulosic fiber fabric is modified by using the chitosan as a deep dyeing agent and then is pretreated at the temperature of 50 DEG C, the modified cellulosic fiber fabric is dyed by using an activated dye, and a color fixing alkali agent is added for fixing the modified cellulosic fiber fabric so that the dye is fixed on fiber. The dyeing rate of the dyed cellulosic fiber fabric can be up to above 90%, and the soaping fastness is improved by 1 level or more than 1 level. The color of the dyed cellulosic fiber fabric is fundamentally in accordance with the color of fiber not dyed by the chitosan, and all performance indexes meet the natural standard.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, in particular to a method for dyeing cellulose fiber fabrics. Background technique [0002] Chitosan is transformed from chitin through deacetylation (chitosan). Due to the presence of a large number of active hydroxyl groups and amino groups in the molecular structure, they have strong chemical reaction capabilities. Under alkaline conditions, the C-6 hydroxyl group can Addition reaction occurs; under acidic conditions, hydrolysis reaction can occur to make it soluble; the active amino group in the molecule can undergo hydrogen bond and van der Waals adsorption with the hydroxyl group of cellulose fiber. [0003] When reactive dyes dye cellulose fibers, because only the hydroxyl group at the 6th position in the molecular structure of cellulose fibers can undergo nucleophilic reactions with dyes, the dyeing seats are limited, and the dyes dyed on the fibers can reach up to 60-...

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 Applications(China)
IPC IPC(8): D06M15/03D06P1/38D06P3/66D06M101/06
Inventor 谭艳君
Owner XI'AN POLYTECHNIC UNIVERSITY
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