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Ion exchange resin-disperse dye one-bath dyeing method

A technology of ion exchange resin and disperse dyes, which is applied in the field of textile printing and dyeing, can solve the problems that ordinary disperse dyes cannot be applied, achieve the effects of reducing the use and difficulty of wastewater treatment, wide application range, and improving energy consumption and water consumption

Active Publication Date: 2021-11-02
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems that ordinary disperse dyes are difficult to be applied to alkaline dyeing in the prior art, and most alkali-resistant disperse dyes are not resistant to strong alkali, etc., the present invention provides an ion exchange resin-disperse dye basic dyeing process, which adopts a dyeing-resistant High-temperature strong-acid cation exchange resin, dyes are added to the wastewater after refining through the resin column for several times, and high-temperature and high-pressure dyeing of polyester and other chemical fibers is performed to overcome the problem that ordinary disperse dyes cannot be applied to alkaline dyeing processes

Method used

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  • Ion exchange resin-disperse dye one-bath dyeing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Pre-treatment dyeing one-bath process as attached figure 1 As shown, select pure polyester plain weave gray fabric with a weight of 200KG. In the high-temperature and high-pressure overflow dyeing machine, the total liquid volume is 2000 liters, 3KG sodium hydroxide is added as a refining agent, and the polyester gray cloth is put into the dyeing machine for refining. After the end, the waste liquid is filled with 150KG pretreated cationic resin Column 90s, at this time the pH value of the dye bath is 6.21, add 0.4KG C.I. Disperse Orange 30, the structural formula of the dye is as follows:

[0044]

[0045] The refining bath was heated to 80°C at a heating rate of 2°C / min, and kept for 15 minutes. After the waste liquid passed through the cationic resin column for 90 seconds, the dye was added, and the temperature was raised to 130°C at a heating rate of 2°C / min, and kept for 60 minutes. The waste liquid flows through the cation resin column, naturally cools down to...

Embodiment 2

[0047] Pre-treatment dyeing one-bath process as attached figure 1 As shown, select pure polyester double-sided twill gray fabric with a weight of 200KG. In the high-temperature and high-pressure overflow dyeing machine, add 4KG sodium hydroxide as a refining component, the total liquid volume is 2000 liters, put the polyester gray cloth into the dyeing machine for refining, and after the end, the waste liquid is filled with 150KG pretreated cations Resin column 90s, at this time the pH value of the dye bath is 6.85, add 0.4KG C.I. disperse blue 359, the structural formula of the dye is as follows:

[0048]

[0049] The refining bath was heated to 80°C at a heating rate of 2°C / min, and kept for 15 minutes. After the waste liquid passed through the cationic resin column for 90 seconds, the dye was added, and the temperature was raised to 130°C at a heating rate of 2°C / min, and kept for 60 minutes. The waste liquid flows through the cation resin column, naturally cools down to ...

Embodiment 3

[0051] Pre-treatment dyeing one-bath process as attached figure 1 As shown, select pure polyester double-sided twill gray fabric with a weight of 200KG. In the high-temperature and high-pressure overflow dyeing machine, add 3KG sodium hydroxide and 3KG refining agent HE0815 as refining components, the total liquid volume is 2000 liters, put the polyester gray cloth into the dyeing machine for refining, and then pass the waste liquid through the filling 150KG pretreated cationic resin column for 90s, at this time the pH value of the dyeing bath is 7.05, add 0.4KG C.I. Disperse Red 3B, the structural formula of the dye is as follows:

[0052]

[0053] The refining bath was heated to 80°C at a heating rate of 2°C / min, and kept for 15 minutes. After the waste liquid passed through the cationic resin column for 90 seconds, the dye was added, and the temperature was raised to 130°C at a heating rate of 2°C / min, and kept for 60 minutes. The waste liquid flows through the cation r...

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Abstract

The invention belongs to the technical field of textile printing and dyeing, and particularly relates to an ion exchange resin-disperse dye one-bath dyeing method. The ion exchange resin-disperse dye one-bath dyeing method comprises the following steps that refining wastewater is treated by using a cation exchange resin column, and a disperse dye is added to form a dye bath to dye a textile, after dyeing is finished, the dye bath is subjected to reduction cleaning through an ion exchange resin column, and the dyed textile is obtained. The ion exchange resin is adopted to adjust the pH value in the dye bath, so that the common disperse dye can complete pretreatment dyeing and reduction cleaning processes in one bath, finally discharged wastewater can directly reach the salt content and pH value standards of national discharged water, and the use of acid and alkali liquor and the wastewater treatment difficulty are reduced. By regulating and controlling the reflux frequency of the wastewater in the resin, the wastewater is not only suitable for dyeing of alkali-resistant disperse dyes under an alkaline condition, but also suitable for one-bath dyeing of common disperse dyes.

Description

technical field [0001] The invention relates to a one-bath dyeing method of ion exchange resin and disperse dye, belonging to the technical field of textile printing and dyeing. Background technique [0002] Polyester fiber and its blended fabrics have important applications in the current high-grade fabrics, and the applicable dyes are disperse dyes. When disperse dyes are used to dye polyester and other chemical fibers, they are mainly dyed under acidic conditions with a pH of 4.5-5.5. During acid dyeing in practical applications, oligomers or oligomers in polyester are precipitated, and they stick to the surface of textiles or the inner wall of the dyeing container, causing them to become colored flowers and other disadvantages. At the same time, the acid-base conditions in pretreatment, dyeing, reduction cleaning and other processes are constantly changing, requiring a large amount of acid-base additives, which adds a lot of salt that is difficult to remove in the waste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/16D06P3/54D06P5/20D06P7/00
CPCD06P1/16D06P3/54D06P5/20D06P7/00
Inventor 李敏苏婧付少海
Owner JIANGNAN UNIV
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