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Waterless fiber dyeing method with supercritical carbon dioxide fluid as medium
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A carbon dioxide and supercritical technology, applied in dyeing, fiber treatment, plant fiber, etc., to achieve the effect of compact structure, short process flow and high efficiency
Inactive Publication Date: 2019-02-19
SUZHOU UNIV +1
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However, for the large share of hydrophilic natural staple fibers such as cotton, wool, and other synthetic staple fibers, in supercritical CO 2 There are relatively few studies on anhydrous fiber dyeing technology in fluid
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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Embodiment 1
[0045] Table 1 and Table 2 are the experimental results of dyeing 1g of pure cotton fiber with disperse reactive yellow dye (o.m.f is 5%) using the method described in this example. Before dyeing, inject 2.5g / L saturated steam into the sarong for pretreatment, and add 10ml of acetone to the dye dissolving unit to predissolve the dye. The dyeing condition is 20Mpa supercritical carbon dioxide fluid, the fluid is statically dyed every 5 minutes and then circulated for 1 minute, the dyeing temperature is 120°C, the liquor ratio is 1:2000, and the total dyeing time is 60 minutes. After dyeing, the online cleaning temperature is 80°C, the pressure is 20Mpa, and the total cleaning time is 30min.
[0046] Table 1 Determination of Example 1 Sample Color Characteristic Value and Level Dyeing Evaluation
[0047]
[0048] The washing fastness evaluation of table 2 embodiment 1 sample
[0049]
[0050] The relevant experimental results in Table 1 show that by adopting the anhydrou...
Embodiment 2
[0053] Table 3 and Table 4 are the experimental results of dyeing 1g of pure cotton fiber with disperse reactive yellow dye (o.m.f is 5%) using the method described in this example. Before dyeing, inject 2.5g / L saturated steam into the sarong for pretreatment, and add 10ml of methanol to the dye dissolving unit to predissolve the dye. The dyeing condition is 20Mpa supercritical carbon dioxide fluid, the fluid is statically dyed every 5 minutes and then circulated for 1 minute, the dyeing temperature is 120°C, the liquor ratio is 1:2000, and the total dyeing time is 60 minutes. After dyeing, the online cleaning temperature is 80°C, the pressure is 20Mpa, and the total cleaning time is 30min.
[0054] Table 3 Determination of Example 2 Sample Color Characteristic Value and Level Dyeing Evaluation
[0055]
[0056] The washing fastness evaluation of table 4 embodiment 2 sample
[0057]
[0058] The relevant experimental results in Table 3 show that by adopting the anhydro...
Embodiment 3
[0061] Table 5 and Table 6 are the experimental results of dyeing 1g of pure cotton fiber with disperse reactive yellow dye (o.m.f is 2%) using the method described in this example. Before dyeing, pass 5g / L saturated steam into the sarong for pretreatment, and add 15ml of acetone to predissolve the dye. The dyeing condition is 20Mpa supercritical carbon dioxide fluid, the fluid is statically dyed every 5 minutes and then circulated for 1 minute, the dyeing temperature is 130°C, the liquor ratio is 1:2000, and the total dyeing time is 40 minutes. After dyeing, the online cleaning temperature is 80°C, the pressure is 20Mpa, and the total cleaning time is 30min.
[0062] Table 5 Determination of Example 3 Sample Color Characteristic Value and Level Dyeing Evaluation
[0063]
[0064] The washing fastness evaluation of table 6 embodiment 3 sample
[0065]
[0066] The experimental results in Table 5 show that by adopting the anhydrous fiber dyeing method of the present inv...
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 waterless fiber dyeing method with supercritical carbon dioxide fluid as the medium and belongs to the technical field of textile dyeing and finishing. According to the waterless fiber dyeing method with the supercritical carbon dioxide fluid as the medium, dry fiber is compacted and filled in a layered state inside a special porous gauze cage through mechanical pressingso as to be compact in structure and uniform in distribution in devices, and through pretreatment, the dyeing performance of the dry fiber can be improved; after dyeing is completed, the dry fiber canbe also cleaned online through the fluid to remove surface dyeing and produce high-quality waterless fiber dyeing dry products. When special dyes are applied to dyeing supercritical CO2, the waterless fiber dyeing method with the supercritical carbon dioxide fluid as the medium can solve the problems of high energy consumption, high discharge, high pollution and the like during a traditional water bath dyeing process and achieve good dyeing effects. The waterless fiber dyeing method with the supercritical carbon dioxide as the medium is simple in process, convenient to operate and capable ofeffectively achieving dry dyeing treatment. The waterless fiber dyeing method with the supercritical carbon dioxide as the medium is mild in reaction, saves usage of large amount of water, heat and high-concentration auxiliaries in traditional dyeing processes and has the advantages of being high in efficiency, green, environmentally friendly and the like.
Description
technical field [0001] The invention relates to an anhydrous fiber dyeing method using a supercritical carbon dioxide fluid as a medium, belonging to the technical field of textile dyeing and finishing. Background technique [0002] Supercritical CO 2 Fluid (Supercritical Carbon Dioxide Fluid, SCF-CO 2 ) instead of water as the dyeing medium, and the process flow is short, easy to operate, and does not produce industrial waste water pollution, which completely solves the problems caused by environmental pollution caused by textile processing. Supercritical CO 2 It has the properties of some gases, low viscosity, high diffusion coefficient, small diffusion boundary, and shortens the dyeing time. Moreover, after the dyeing process, the fluid can be released in the form of a gaseous state, which realizes the recycling of residual solid dyes and gases, does not need to be dried after dyeing, can add less or no dye auxiliaries, and realizes resource conservation. Optimum util...
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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