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Anhydrous fiber dyeing method of mixed fluid medium

A technology of mixing fluids and fluid media, which is applied in dyeing, textiles and papermaking, etc., can solve the problems of inability to obtain dyeing depth and color fastness, low affinity or directness of natural fibers, and inability to effectively expand natural fibers. Dyeing performance, good quality, effect of improving polarity

Active Publication Date: 2019-02-19
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, supercritical CO 2 The polarity of the fluid medium is low, and the water-soluble dyes with high polarity cannot be dissolved well or hardly tolerated; while they are soluble in supercritical CO 2 Fluid ordinary disperse dyes, due to their small molecular weight, simple molecular structure, low affinity or directness to natural fibers, cannot obtain good dyeing depth and color fastness, etc., so they cannot really achieve good dyeing of various natural fibers
More importantly, the hydrophobic carbon dioxide fluid cannot effectively expand the natural fibers in a dry state, and cannot provide the necessary conditions for the dye molecules to dye, especially the diffusion

Method used

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  • Anhydrous fiber dyeing method of mixed fluid medium
  • Anhydrous fiber dyeing method of mixed fluid medium
  • Anhydrous fiber dyeing method of mixed fluid medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Table 1.1 and Table 1.2 are the experimental results of dyeing and processing pure cotton fibers with reactive disperse yellow dye (5% o.m.f) using the method described in this example. During dyeing, the content of steam in the mixed fluid in the system was 2.5 g / L, and 10 ml of acetone was added to the dye dissolving unit to pre-dissolve the dye. The dyeing condition is a mixed fluid medium of 20Mpa, the mixed fluid is statically dyed for 1 min after each 5 min, the dyeing temperature is 120°C, and the total dyeing time is 60 min. After dyeing, supercritical CO 2 The temperature of the fluid floating color cleaning is 80℃, the pressure is 20Mpa, the fluid static dyeing cycle is 1min after every 5min, and the total cleaning time is 30min.

[0045] Table 1.1 Determination of color characteristic value of sample 1 and evaluation of level dyeing

[0046]

[0047] Table 1.2 Evaluation of washing fastness of the sample of Example 1

[0048]

[0049] The relevant ex...

Embodiment 2

[0052] Tables 2.1 and 2.2 are the experimental results of dyeing and processing pure cotton fibers with reactive disperse yellow dye (o.m.f is 5%) using the method described in this example. During dyeing, the content of steam in the mixed fluid in the system was 2.5 g / L, and 10 ml of methanol was added to the dye dissolving unit to pre-dissolve the dye. The dyeing condition is a mixed fluid medium of 20Mpa, the mixed fluid is statically dyed for 1 min after each 5 min, the dyeing temperature is 120°C, and the total dyeing time is 60 min. After dyeing, supercritical CO 2 The temperature of the fluid floating color cleaning is 80℃, the pressure is 20Mpa, the fluid static dyeing cycle is 1min after every 5min, and the total cleaning time is 30min.

[0053] Table 2.1 Determination of color characteristic value of sample 2 and evaluation of level dyeing

[0054]

[0055] Table 2.2 Evaluation of washing fastness of the sample of Example 2

[0056]

[0057] The relevant exp...

Embodiment 3

[0060] Table 3.1 and Table 3.2 are the experimental results of dyeing and processing pure cotton fibers with reactive disperse yellow dye (o.m.f is 2%) using the method described in this example. During dyeing, the content of steam in the mixed fluid in the system was 5g / L, and 15ml of acetone was added to pre-dissolve the dye. The dyeing condition is a mixed fluid of 20Mpa, the mixed fluid is statically dyed for 1 min after each 5min, the dyeing temperature is 130°C, and the total dyeing time is 40min. After dyeing, supercritical CO 2 The temperature of fluid floating color cleaning is 80℃, the pressure is 20Mpa, the fluid static dyeing cycle is 1min after every 5min, and the total cleaning time is 30min.

[0061] Table 3.1 Determination of color characteristic value of sample 3 and evaluation of level dyeing

[0062]

[0063] Table 3.2 Evaluation of washing fastness of the sample of Example 3

[0064]

[0065] The experimental results in Table 3.1 show that, using r...

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Abstract

The invention relates to an anhydrous fiber dyeing method of a mixed fluid medium. Supercritical carbon dioxide fluid medium and a certain amount of steam are mixed under a certain condition to form the mixed fluid medium, so that the anhydrous fiber dyeing effects of natural fibers are improved. By a fluid medium mixing method, a hydrophobic supercritical carbon dioxide fluid medium can be effectively modified, the polarity of the medium is improved, the solubility of polar dyes can be improved under the dyeing condition, and the fibers can be expanded, so that dyeability and dying behaviorsof the hydrophobic fibers can be remarkably improved in supercritical carbon dioxide fluid. The method is simple in process, convenient to operate, low in energy consumption, consumption of a lot of water resources and pollutant emission in a traditional process are avoided, and the method has the advantages that the method is green, ecological, environmentally friendly and efficient.

Description

technical field [0001] The invention relates to the technical field of textile dyeing and finishing, in particular to an anhydrous fiber dyeing method with a mixed fluid medium. Background technique [0002] In recent years, supercritical fluid technology has developed from simple basic theory and laboratory research to practical application. And it has been rapidly improved and expanded in many fields, such as supercritical fluid anhydrous dyeing, supercritical fluid extraction, supercritical fluid chemical reaction, supercritical fluid cleaning technology, etc. Due to the moderate critical temperature and critical pressure conditions of carbon dioxide (31.1°C and 7.38MPa), and the characteristics of non-toxic, non-flammable, and non-explosive, carbon dioxide has become the most widely used supercritical fluid medium today. Supercritical CO 2 The fluid not only has high permeability and low viscosity comparable to gas, but also has a density similar to liquid and excellen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/00D06P1/38D06P1/16
CPCD06P1/0016D06P1/16D06P1/38D06P2001/0084D06P1/94D06P1/92D06P1/0004Y02P70/62
Inventor 龙家杰蔡冲
Owner SUZHOU UNIV