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Supercritical carbon dioxide dyeing process for finishing and pre-treating aramid fiber/viscose blended fabric polyethylene glycol

A polyethylene glycol and carbon dioxide technology, used in dyeing, fiber processing, textiles and papermaking, etc., can solve the problem of supercritical carbon dioxide dyeing of aramid/viscose fabrics. The problem of high chemical temperature can be shortened to shorten the production cycle, shorten the dyeing time and improve the economic benefits.

Inactive Publication Date: 2015-01-14
WUXI XINGLIN DYEING ENVIRONMENTAL PROTECTION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The current dyeing situation mainly has the following problems: (1) Penetration: There are a large number of aromatic rings in the molecular chain of aramid fiber 1313, which makes its internal structure very tight, and the glass transition temperature is very high, so in the test high temperature The fiber cannot be dyed thoroughly under high pressure; (2) Light fastness: ordinary high temperature and high pressure cannot solve the problem of poor light fastness of aramid fiber; (3) Deep dyeing: Aramid dyed, mostly only medium light color
[0010] At present, there is no report on supercritical carbon dioxide dyeing of aramid / viscose fabrics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of supercritical carbon dioxide dyeing process of aramid fiber / viscose blended fabric polyethylene glycol finishing pretreatment, and its technological process comprises:

[0034] Fabric cleaning pretreatment→fabric polyethylene glycol finishing pretreatment→supercritical carbon dioxide dyeing.

[0035] Among them, the pre-cleaning process is as follows: working solution→hot water washing (80°C)→acetic acid cleaning→cold water rinse→natural drying→ironing→drying (40°C).

[0036] Among them, the pre-cleaning treatment solution prescription is: sodium carbonate 3g / L, JFC 0.5g / L, sodium hydroxide 5g / L.

[0037] Among them, polyethylene glycol 400 processing fabric process conditions and process: padding (two dipping and two rolling, the excess rate is 80%) → pre-baking (90 ° C, 3 min) → baking (170 ° C, 2.5 min) → put Waiting to be dyed in the dryer.

[0038] Among them, the polyethylene glycol 400 treatment padding liquid prescription is: PEG-400 is 25% (o.w.f); ...

Embodiment 2

[0042] A kind of supercritical carbon dioxide dyeing process of aramid fiber / viscose blended fabric polyethylene glycol finishing pretreatment, and its technological process comprises:

[0043] Fabric cleaning pretreatment→fabric polyethylene glycol finishing pretreatment→supercritical carbon dioxide dyeing.

[0044] Among them, the pre-cleaning process is as follows: working solution→hot water washing (80°C)→acetic acid cleaning→cold water rinse→natural drying→ironing→drying (40°C).

[0045] Among them, the pre-cleaning treatment working liquid prescription is: sodium carbonate 2.5g / L, JFC 0.1g / L, sodium hydroxide 4g / L.

[0046] Among them, polyethylene glycol 400 processing fabric process conditions and process: padding (two dipping and two rolling, the excess rate is 80%) → pre-baking (90 ° C, 3 min) → baking (170 ° C, 2.5 min) → put Waiting to be dyed in the dryer.

[0047] Among them, the polyethylene glycol 400 treatment padding liquid prescription is: PEG-400 is 20% (...

Embodiment 3

[0051] A kind of supercritical carbon dioxide dyeing process of aramid fiber / viscose blended fabric polyethylene glycol finishing pretreatment, and its technological process comprises:

[0052] Fabric cleaning pretreatment→fabric polyethylene glycol finishing pretreatment→supercritical carbon dioxide dyeing.

[0053] Among them, the pre-cleaning process is as follows: working solution→hot water washing (80°C)→acetic acid cleaning→cold water rinse→natural drying→ironing→drying (40°C).

[0054] Among them, the pre-cleaning treatment working liquid prescription is: sodium carbonate 3.5g / L, JFC 1g / L, sodium hydroxide 6g / L.

[0055] Among them, polyethylene glycol 400 processing fabric process conditions and process: padding (two dipping and two rolling, the excess rate is 80%) → pre-baking (90 ° C, 3 min) → baking (170 ° C, 2.5 min) → put Waiting to be dyed in the dryer.

[0056] Among them, the polyethylene glycol 400 treatment padding fluid prescription is: PEG-400 is 30% (o.w...

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Abstract

The invention relates to a supercritical carbon dioxide dyeing process for finishing and pre-treating aramid fiber / viscose blended fabric polyethylene glycol. A good washing fastness is achieved after dyeing aramid fiber / viscose by supercritical carbon dioxide; the K / S value of the dyed fabric reaches 17; the dry rubbing fastness reaches a grade V; the wet rubbing fastness reaches the grade IV-V; the high-temperature color distortion fastness reaches a grade V. The supercritical CO2 dyeing process causes no damage to the warp and weft breakage strength of the fabric; conversely, the strength of the dyed fabric is higher than that of the fabric in the prior art; the fabric is few in surface floating color, so that the operation for washing the floating color is not required.

Description

technical field [0001] The invention relates to the field of textiles, in particular to a supercritical carbon dioxide dyeing process for polyethylene glycol finishing and pretreatment of aramid / viscose blended fabrics. Background technique [0002] Water is a very important medium in the traditional dyeing process. Water is used to wet and swell fibers, and water is used as a solvent, dispersant or dye carrier. After dyeing, cleaning and other follow-up work is required, which consumes a lot of water resources. There are a lot of unfixed dyes and auxiliaries in the discharged wastewater, and there will be some heavy metals, which will cause serious pollution to the environment. With the increasing shortage of water resources, especially the continuous improvement of people's environmental awareness, the traditional dyeing technology is challenged, and people are pursuing a new technology of pollution-free dyeing that does not use water or uses less water. The supercritical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/94D06P1/16D06P3/85D06M11/38D06M11/76D06M13/17D06M11/155D06M13/207D06M101/36D06M101/06
Inventor 俞国兴
Owner WUXI XINGLIN DYEING ENVIRONMENTAL PROTECTION EQUIP
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