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Method for dyeing meta-aramid fabric particle flow

A dyeing method and particle flow technology, applied in the field of textile printing and dyeing, can solve problems such as toxicity, affecting fabric air permeability and hand feeling, and increasing production costs

Inactive Publication Date: 2019-08-02
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that this method only utilizes the change of temperature to make the dye diffuse into the fiber, and the dyeable fiber is limited, so there are certain limitations in application.
Its disadvantages are: due to the addition of various organic solvents, and some solvents have certain toxicity, the separation and recovery of solvents increases the production cost
The disadvantage is that: due to the presence of paste in the dyeing solution, the paste will form a relatively dense film on the surface of the fabric after hot pressing, which will affect the air permeability and hand feeling of the fabric in practical applications.

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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  • Method for dyeing meta-aramid fabric particle flow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take a meta-aramid fabric with a size of 10cm×15cm, use disperse scarlet GS as the disperse dye, and prepare a dye solution in proportion. The mass percentage of N,N-dimethylacetamide in the dye solution is 98%, and the mass percentage of ethanol is 1%. The mass percentage of disperse dyes is 1%. After the dyeing solution is prepared, it is stirred at 200 rpm for 3 minutes at a temperature of 30°C to form a dyeing solution, and meta-aramid is added to the dyeing solution according to a bath ratio of 1:5. Soak the fabric for 5 minutes, then take out the meta-aramid fabric soaked in the dye solution, control its liquid retention rate to 100%, and place the meta-aramid fiber fabric with a liquid retention rate of 100% on a flat vulcanizing machine at a temperature of 165°C , within 5 seconds, increase the pressure of the flat vulcanizing machine to 5Mpa, and keep it for 10 minutes, then take out the dyed fabric, wash and dry it to obtain a dyed meta-aramid fabric. The effe...

Embodiment 2

[0030] Take a meta-aramid fiber fabric with a size of 10cm×15cm, use disperse scarlet GS as the disperse dye, and prepare a dye liquor in proportion. The mass percentage of N,N-dimethylacetamide in the dye liquor is 89%, and the mass percentage of ethanol is 10%. The mass percentage of disperse dye is 5%. After the dye liquor is prepared, it is stirred at 200 rpm for 3 minutes at a temperature of 30°C to form a dye liquor, and meta-aramid fiber is added to the dye liquor according to the bath ratio of 1:5. Soak the fabric for 10 minutes, then take out the meta-aramid fabric soaked in the dye solution, control its liquid retention rate to 150%, and place the meta-aramid fiber fabric with a liquid retention rate of 150% on a flat vulcanizing machine at a temperature of 180°C , within 10 seconds, add the pressure of the flat vulcanizer to 8Mpa, and keep it for 12 minutes, then take out the dyed fabric, wash and dry it to obtain the dyed meta-aramid fabric. The effect is shown in ...

Embodiment 3

[0032] Take a meta-aramid fabric with a size of 10cm×15cm, use disperse scarlet GS as the disperse dye, and prepare a dyeing solution in proportion. The mass percentage of N,N-dimethylacetamide in the dyeing solution is 60%, and the mass percentage of ethanol is 30%. The mass percentage of disperse dye is 10%. After the dye liquor is prepared, it is stirred at 200 rpm for 3 minutes at a temperature of 30°C to form a dye liquor, and meta-aramid fiber is added to the dye liquor according to the bath ratio of 1:5. Soak the fabric for 30 minutes, then take out the meta-aramid fabric soaked in the dye solution, control its liquid retention rate to 200%, and place the meta-aramid fiber fabric with a liquid retention rate of 200% on a flat vulcanizing machine at a temperature of 205°C , within 15 seconds, increase the pressure of the flat vulcanizing machine to 10Mpa, and keep it for 15 minutes, then take out the dyed fabric, wash and dry it to obtain a dyed meta-aramid fabric. The e...

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 relates to a method for dyeing a meta-aramid fabric particle flow, and belongs to the technical field of textile printing and dyeing. The method comprises the following steps: dissolvingdisperse dye with a mixed solvent of N,N-dimethyl acetamide and ethanol to form dyeing liquor; soaking meta-aramid fabric into the dyeing liquor, taking out the meta-aramid fabric, controlling the mangle expression to 100-200%, putting the meta-aramid fabric on plate vulcanization machine at the temperature of 165-205 DEG C, rapidly pressurizing and rapidly gasifying the dyeing liquor carrying the meta-aramid fabric under high temperature to form the particle flow, wherein ethanol in the particle flow can be insulated from air, so as to prevent the dye in the particle flow from being oxidizedby oxygen; the acting force of hydrogen bond between fiber macromolecules in the meta-aramid fabric is reduced by N,N-dimethyl acetamide in the particle flow, so as to help particles in the dye in the particle flow to enter fibers of the meta-aramid fabric; the meta-aramid fabric is dyed by the disperse dye in the particle flow. According to the method, the dyeing efficiency of the meta-aramid fabric can be effectively improved; in addition, the dyeing process is short, the bath ratio is smaller, and the production cost and the resource consumption are lowered.

Description

technical field [0001] The invention relates to a method for dyeing particle flow of meta-aramid fiber fabric, belonging to the technical field of textile printing and dyeing. Background technique [0002] Meta-aramid is a high-tech special fiber with excellent comprehensive properties. It is widely used in aerospace, national defense, transportation, Industrial production, agricultural production, energy environment, medical and health care, sports equipment and special protective clothing and other fields. The application of meta-aramid fiber in many fields puts forward requirements for its dyeability. However, the macromolecular chain arrangement of meta-aramid fiber is relatively regular, and there are a large number of aromatic rings containing amide groups in the molecular chain, which has strong hydrophobicity. Strong hydrogen bonding force and high glass transition temperature make it difficult to dye meta-aramid fibers. Chinese Patent Publication No. CN 102535199A...

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): D06P1/16D06P1/92D06P3/26
CPCD06P1/16D06P1/928D06P3/26
Inventor 徐卫林盛丹陈欣刘冰倩曹根阳王运利
Owner WUHAN TEXTILE UNIV
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