Preparation method of multicomponent fiber one-bath multicolor normal pressure dyeing braid

Abstract

The invention discloses a preparation method of a multicomponent fiber one-bath multicolor normal-pressure dyeing braid, and relates to the technical field of braid dyeing. The cationic dye and the acid dye in the same dye bath are used for dyeing different fibers in the braid, meanwhile, ammonium dihydrogen citrate is innovatively adopted as an auxiliary, ethanol water is adopted as a solvent, high leveling property and high permeability of the dye are achieved, the dyeing effect is enhanced, and the color fastness is improved; besides, the EA113 type polyester fiber (NECDP) and the EA007 type polyester fiber (CDP) are adopted to replace the traditional common polyester fiber, so that the binding force of the cationic dye to the polyester fiber is stronger, and the color fastness of the dyed fabric is better.

Description

Technical Field

[0001] The present invention relates to the technical field of ribbon dyeing, and specifically provides a method for preparing a multi-component fiber one-bath multi-color atmospheric pressure dyeing ribbon. Background Art

[0002] Ribbons are widely used in military security, outdoor sports, clothing, luggage and other fields. The unique fixing and adjusting functions make ribbons a necessity in life. For different uses, single-color ribbons can no longer meet the requirements. Each industry has different emphases on the material and dyeing requirements of ribbons. At the same time, dyeing ribbons can introduce popular elements and add a sense of detail and interest to products.

[0003] Currently, for the dyeing of multi-color ribbons, mostly one-bath two-step method or two-bath method is used, but there are problems such as long dyeing process cycle, high energy consumption, and much pollution. At the same time, polyester has the highest heat resistance and thermal stability among synthetic fibers, and has a series of excellent properties such as good strength, high elasticity, excellent chemical stability and dimensional stability, and is widely used in the preparation of ribbons. However, the polyester fiber structure is dense, the intermolecular voids are small, and there are no hydrophilic groups and polar groups in the chemical structure, so the swelling degree in water is small, and it is difficult to combine with dyes under atmospheric pressure conditions. The commonly used high-temperature high-pressure dyeing method for polyester dyeing has high equipment requirements and large energy consumption. Therefore, with the increasing awareness of energy conservation and emission reduction of people, it is very necessary to develop a simple and environmentally friendly multi-component fiber one-bath multi-color atmospheric pressure dyeing ribbon. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for preparing a multi-component fiber one-bath multi-color atmospheric pressure dyeing ribbon to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: A method for preparing a multi-component fiber one-bath multi-color atmospheric pressure dyeing ribbon, comprising the following preparation steps: (1) Mix cationic / acid dyes, auxiliaries, and solvents in a dye cup, adjust the pH to 4 - 6 with glacial acetic acid, and prepare a dye solution; (2) Put the ribbon into the dye cup, with a liquor ratio of 1:30, and perform dyeing treatment on the ribbon to obtain a dyed ribbon; (3) Wash the dyed ribbon with water at 100°C and dry it.

[0006] Further, the cationic / acid dyes include 0 - 2% owf cationic dyes and 0 - 2% owf acid dyes; Further, the cationic dye is disperse cationic red SD-GRL or disperse cationic blue SD-GSL.

[0007] Further, the acid dye is brilliant blue ZD-3R or red ZD-2B.

[0008] Further, the auxiliary agent is ammonium dihydrogen citrate, and the dosage is 0.5~1.5 g / L.

[0009] Further, the solvent is an ethanol aqueous solution with a volume fraction of 40~60%.

[0010] Further, the webbing in step (3) is woven with EA113 type polyester fiber (NECDP) for letters, with PA / spandex core-spun yarn as the base, and EA007 type polyester fiber (CDP) as the edge.

[0011] Further, the PA is one of PA6, PA66, and PA56.

[0012] Further, the dyeing treatment in step (3) is specifically as follows: the webbing is dyed in one bath, entered the dye bath at 40°C, after 10 min, the temperature was raised to 70°C at a heating rate of 1°C / min, held for 15 min, then the temperature was raised to 100°C at a heating rate of 1°C / min, held for 60 min, and then cooled to 60°C.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: (1) The present invention uses cationic dyes and acid dyes in the same dye bath to dye different fibers in the webbing, thereby producing different color effects; (2) The present invention controls the pH value of the dye solution, so that the cationic dye and the acid dye can have a strong chemical bonding effect with the webbing, which can improve the dye uptake rate and color fastness, and complete the polyester dyeing under low temperature and normal pressure conditions. The process is simple, green and environmentally friendly; (3) The present application uses ammonium dihydrogen citrate as a leveling agent and anti-precipitation agent for the dye solution. Different from the traditional dye solution that uses multiple additives to achieve the same effect, the ammonium dihydrogen citrate in the present application contains a quaternary ammonium cation group and a hydrophilic group, which can retard the cationic dye by competing for the dyeing site with the cationic dye, and slow down the dye uptake rate of the acid dye through electrostatic interaction, playing a leveling role. At the same time, the hydrophilic group greatly reduces the possibility of precipitation after binding with the acid dye, significantly improving the uniformity of dyeing; (4) The present invention uses ethanol water as the main solvent. Ethanol has a small molecular weight and strong permeability, which can drive the dye into the fiber, thereby enhancing the dyeing effect; (5) The present invention uses EA113 type polyester fiber (NECDP) and EA007 type polyester fiber (CDP) to replace the traditional ordinary polyester fiber, which can make the binding force of the cationic dye to the polyester fiber stronger and the color fastness of the dyed fabric better. Description of the Drawings

[0014] The accompanying drawings are used to provide a further understanding of the present invention and form a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings: Figure 1 is a process flow chart of the webbing dyeing process of the present invention; Figure 2 is a schematic diagram of the webbing dyed in one bath with 0.5% owf acid dye red ZD-2B / 0.5% owf disperse cationic blue SD-GSL in Example 1 of the present invention; Figure 3 is a schematic diagram of the webbing dyed in one bath with 1% owf acid dye red ZD-2B / 1% owf disperse cationic blue SD-GSL in Example 2 of the present invention; Figure 4 is a schematic diagram of the webbing dyed in one bath with 2% owf acid dye red ZD-2B / 2% owf disperse cationic blue SD-GSL in Example 3 of the present invention; Figure 5 is a schematic diagram of the webbing dyed in one bath with 0.5% owf acid dye brilliant blue ZD-3R / 0.5% owf disperse cationic red SD-GRL in Example 4 of the present invention; Figure 6 is a schematic diagram of the webbing dyed in one bath with 1% owf acid dye brilliant blue ZD-3R / 1% owf disperse cationic red SD-GRL in Example 4 of the present invention; Figure 7 is a schematic diagram of the webbing dyed in one bath with 2% owf acid dye brilliant blue ZD-3R / 2% owf disperse cationic red SD-GRL in Example 4 of the present invention. Detailed embodiments

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] In order to more clearly illustrate the method provided by the present invention, the following examples are used for detailed description. The test methods for each index of the dyed webbing produced in the following examples are as follows: Color fastness test: The test is carried out according to GB / T 3920-2008 "Textiles - Tests for color fastness - Color fastness to rubbing" and GB / T 3921-2008 "Textiles - Tests for color fastness - Color fastness to soaping".

[0017] Example 1: (1) Mix the cationic / acid dye, auxiliary agent, and ethanol aqueous solution with a volume fraction of 50% in a dyeing cup, adjust the pH to 4.5 with glacial acetic acid, and prepare a dyeing solution; the cationic / acid dye includes 0.5% owf of disperse cationic blue SD-GSL and 0.5% owf of acid dye red ZD-2B, the auxiliary agent is ammonium dihydrogen citrate, and the dosage is 1.0 g / L; the webbing is woven with EA113 type polyester fiber (NECDP) for letters, with PA6 / spandex core-spun yarn as the base, and EA007 type polyester fiber (CDP) as the edge; (2) Put the webbing into the dyeing cup, with a bath ratio of 1:30, carry out one-bath dyeing on the webbing, dye at 40°C, after 10 min, raise the temperature to 70°C at a heating rate of 1°C / min, keep warm for 15 min, then raise the temperature to 100°C at a heating rate of 1°C / min, keep warm for 60 min, and cool down to 60°C to obtain the dyed webbing; (3) Wash the dyed webbing with water at 100°C and dry it.

[0018] Example 2: (1) Mix the cationic / acid dye, auxiliary agent, and ethanol aqueous solution with a volume fraction of 50% in a dyeing cup, adjust the pH to 4.5 with glacial acetic acid, and prepare a dyeing solution; the cationic / acid dye includes 1% owf of disperse cationic blue SD-GSL and 1% owf of acid dye red ZD-2B, the auxiliary agent is ammonium dihydrogen citrate, and the dosage is 1.0 g / L; the webbing is woven with EA113 type polyester fiber (NECDP) for letters, with PA6 / spandex core-spun yarn as the base, and EA007 type polyester fiber (CDP) as the edge; (2) Put the webbing into the dyeing cup, with a bath ratio of 1:30, carry out one-bath dyeing on the webbing, dye at 40°C, after 10 min, raise the temperature to 70°C at a heating rate of 1°C / min, keep warm for 15 min, then raise the temperature to 100°C at a heating rate of 1°C / min, keep warm for 60 min, and cool down to 60°C to obtain the dyed webbing; (3) Wash the dyed webbing with water at 100°C and dry it.

[0019] Example 3: (1) Mix the cationic / acid dye, auxiliary agent, and ethanol aqueous solution with a volume fraction of 50% in a dyeing cup, adjust the pH to 4.5 with glacial acetic acid, and prepare a dyeing solution; the cationic / acid dye includes 2% owf of disperse cationic blue SD-GSL and 2% owf of acid dye red ZD-2B, the auxiliary agent is ammonium dihydrogen citrate, and the dosage is 1.0 g / L; the webbing is woven with EA113 type polyester fiber (NECDP) for letters, with PA6 / spandex core-spun yarn as the base, and EA007 type polyester fiber (CDP) as the edge; (2) Put the webbing into the dyeing cup with a liquor ratio of 1:30. Conduct one-bath dyeing on the webbing. Immerse it in the dye bath at 40°C. After 10 minutes, raise the temperature to 70°C at a rate of 1°C / min, hold for 15 minutes, then raise the temperature to 100°C at a rate of 1°C / min, hold for 60 minutes, and then cool down to 60°C to obtain the dyed webbing; (3) Wash the dyed webbing with water at 100°C and then dry it.

[0020] Example 4: (1) Mix the cationic / acid dye, auxiliary agent, and ethanol aqueous solution with a volume fraction of 50% in a dyeing cup, adjust the pH to 4.5 with glacial acetic acid to prepare a dyeing solution; the cationic / acid dye includes 0.5% owf disperse cationic red SD-GRL and 0.5% owf acid dye brilliant blue ZD-3R, and the auxiliary agent is ammonium dihydrogen citrate with a dosage of 1.0 g / L; the webbing is woven with EA113 type polyester fiber (NECDP) for letters, with PA6 / spandex core-spun yarn as the base, and EA007 type polyester fiber (CDP) as the edge; (2) Put the webbing into the dyeing cup with a liquor ratio of 1:30. Conduct one-bath dyeing on the webbing. Immerse it in the dye bath at 40°C. After 10 minutes, raise the temperature to 70°C at a rate of 1°C / min, hold for 15 minutes, then raise the temperature to 100°C at a rate of 1°C / min, hold for 60 minutes, and then cool down to 60°C to obtain the dyed webbing; (3) Wash the dyed webbing with water at 100°C and then dry it.

[0021] Example 5: (1) Mix the cationic / acid dye, auxiliary agent, and ethanol aqueous solution with a volume fraction of 50% in a dyeing cup, adjust the pH to 4.5 with glacial acetic acid to prepare a dyeing solution; the cationic / acid dye includes 1% owf disperse cationic red SD-GRL and 1% owf acid dye brilliant blue ZD-3R, and the auxiliary agent is ammonium dihydrogen citrate with a dosage of 1.0 g / L; the webbing is woven with EA113 type polyester fiber (NECDP) for letters, with PA6 / spandex core-spun yarn as the base, and EA007 type polyester fiber (CDP) as the edge; (2) Put the webbing into the dyeing cup with a liquor ratio of 1:30. Conduct one-bath dyeing on the webbing. Immerse it in the dye bath at 40°C. After 10 minutes, raise the temperature to 70°C at a rate of 1°C / min, hold for 15 minutes, then raise the temperature to 100°C at a rate of 1°C / min, hold for 60 minutes, and then cool down to 60°C to obtain the dyed webbing; (3) Wash the dyed webbing with water at 100°C and then dry it.

[0022] Example 6: (1) Mix the cationic / acid dye, auxiliary agent, and an ethanol aqueous solution with a volume fraction of 50% in a dyeing cup, adjust the pH to 4.5 with glacial acetic acid, and prepare a dyeing solution; the cationic / acid dye includes 2% owf disperse cationic red SD-GRL and 2% owf acid dye brilliant blue ZD-3R, the auxiliary agent is ammonium dihydrogen citrate, and the dosage is 1.0 g / L; the webbing is woven with EA113 type polyester fiber (NECDP) for letters, with PA6 / spandex core-spun yarn as the base, and EA007 type polyester fiber (CDP) as the edge; (2) Put the webbing into the dyeing cup, with a bath ratio of 1:30, carry out one-bath dyeing on the webbing, enter the dyeing at 40°C, after 10 min, raise the temperature to 70°C at a heating rate of 1°C / min, keep warm for 15 min, then raise the temperature to 100°C at a heating rate of 1°C / min, keep warm for 60 min, and cool down to 60°C to obtain the dyed webbing; (3) Wash the dyed webbing with water at 100°C and dry it.

[0023] Example 7: (1) Mix the cationic dye, auxiliary agent, and an ethanol aqueous solution with a volume fraction of 50% in a dyeing cup, adjust the pH to 4.5 with glacial acetic acid, and prepare a dyeing solution; the cationic dye is 2% owf disperse cationic red SD-GRL, the auxiliary agent is ammonium dihydrogen citrate, and the dosage is 1.0 g / L; the webbing is woven with EA113 type polyester fiber (NECDP) for letters, with PA6 / spandex core-spun yarn as the base, and EA007 type polyester fiber (CDP) as the edge; (2) Put the webbing into the dyeing cup, with a bath ratio of 1:30, carry out one-bath dyeing on the webbing, enter the dyeing at 40°C, after 10 min, raise the temperature to 70°C at a heating rate of 1°C / min, keep warm for 15 min, then raise the temperature to 100°C at a heating rate of 1°C / min, keep warm for 60 min, and cool down to 60°C to obtain the dyed webbing; (3) Wash the dyed webbing with water at 100°C and dry it.

[0024] Example 8: (1) Mix the cationic dye, auxiliary agent, and an ethanol aqueous solution with a volume fraction of 50% in a dyeing cup, adjust the pH to 4.5 with glacial acetic acid, and prepare a dyeing solution; the cationic dye is 2% owf disperse cationic blue SD-GSL, the auxiliary agent is ammonium dihydrogen citrate, and the dosage is 1.0 g / L; the webbing is woven with EA113 type polyester fiber (NECDP) for letters, with PA6 / spandex core-spun yarn as the base, and EA007 type polyester fiber (CDP) as the edge; (2) Put the webbing into the dyeing cup with a liquor ratio of 1:30. Conduct one-bath dyeing on the webbing. Immerse it in the dye bath at 40°C. After 10 minutes, raise the temperature to 70°C at a rate of 1°C / min, hold for 15 minutes, then raise the temperature to 100°C at a rate of 1°C / min, hold for 60 minutes, and then cool down to 60°C to obtain the dyed webbing; (3) Wash the dyed webbing with water at 100°C and then dry it.

[0025] Example 9: (1) Mix the acid dye, auxiliary agent, and ethanol aqueous solution with a volume fraction of 50% in the dyeing cup, adjust the pH to 4.5 with glacial acetic acid to prepare the dyeing solution; the acid dye is 2% owf acid brilliant blue ZD-3R, and the auxiliary agent is ammonium dihydrogen citrate with a dosage of 1.0 g / L; the webbing is woven with EA113 type polyester fiber (NECDP) for letters, with PA6 / spandex core-spun yarn as the base, and EA007 type polyester fiber (CDP) as the edge; (2) Put the webbing into the dyeing cup with a liquor ratio of 1:30. Conduct one-bath dyeing on the webbing. Immerse it in the dye bath at 40°C. After 10 minutes, raise the temperature to 70°C at a rate of 1°C / min, hold for 15 minutes, then raise the temperature to 100°C at a rate of 1°C / min, hold for 60 minutes, and then cool down to 60°C to obtain the dyed webbing; (3) Wash the dyed webbing with water at 100°C and then dry it.

[0026] Example 10: (1) Mix the acid dye, auxiliary agent, and ethanol aqueous solution with a volume fraction of 50% in the dyeing cup, adjust the pH to 4.5 with glacial acetic acid to prepare the dyeing solution; the acid dye is 2% owf acid red ZD-2B, and the auxiliary agent is ammonium dihydrogen citrate with a dosage of 1.0 g / L; the webbing is woven with EA113 type polyester fiber (NECDP) for letters, with PA6 / spandex core-spun yarn as the base, and EA007 type polyester fiber (CDP) as the edge; (2) Put the webbing into the dyeing cup with a liquor ratio of 1:30. Conduct one-bath dyeing on the webbing. Immerse it in the dye bath at 40°C. After 10 minutes, raise the temperature to 70°C at a rate of 1°C / min, hold for 15 minutes, then raise the temperature to 100°C at a rate of 1°C / min, hold for 60 minutes, and then cool down to 60°C to obtain the dyed webbing; (3) Wash the dyed webbing with water at 100°C and then dry it.

[0027] Effect Example The following table shows the performance analysis results of the dyed webbings using the examples and comparative examples of the present invention.

[0028] Table 1 K / S value of EA113 type polyester fiber (NECDP)

[0029] Table 2 K / S value of EA007 type polyester fiber (CDP)

[0030] Table 3 K / S value of PA fiber

[0031] Table 4 Color fastness of dyed webbing

[0032] The preparation method of the present invention has a simple process, reduces the energy consumption and wastewater discharge, is beneficial to environmental protection, and the dyed colors not only have the characteristics of high dye uptake rate and high dye utilization rate, but also have uniform, bright, less floating color and good fastness, meeting the expected effect and saving production costs.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for preparing a multi-component fiber one-bath multi-color normal pressure dyeing ribbon, characterized in that: The method comprises the following preparation steps: (1) Mix cationic / acid dyes, auxiliaries, and solvents in a dye cup, adjust the pH to 4-6 with glacial acetic acid, and prepare a dye solution; (2) Put the ribbon into the dye cup with a bath ratio of 1:30, dye the ribbon to obtain a dyed ribbon; (3) Wash the dyed ribbon with 100°C water and dry it.

2. The method for preparing a multi-component fiber one-bath multi-color normal pressure dyeing ribbon according to claim 1, characterized in that: The cationic / acid dyes include 0-2% owf cationic dyes and 0-2% owf acid dyes.

3. The method for preparing a multi-component fiber one-bath multi-color normal pressure dyeing ribbon according to claim 2, characterized in that: The cationic dye is disperse cationic red SD-GRL or disperse cationic blue SD-GSL.

4. The method for preparing a multi-component fiber one-bath multi-color normal pressure dyeing ribbon according to claim 2, characterized in that: The acid dye is brilliant blue ZD-3R or red ZD-2B.

5. The method for preparing a multi-component fiber one-bath multi-color normal pressure dyeing ribbon according to claim 1, characterized in that: The auxiliary agent is diammonium citrate, and the dosage is 0.5-1.5 g / L.

6. The method for preparing a multi-component fiber one-bath multi-color normal pressure dyeing ribbon according to claim 1, characterized in that: The solvent is an ethanol aqueous solution with a volume fraction of 40-60%.

7. The method for preparing a multi-component fiber one-bath multi-color normal pressure dyeing ribbon according to claim 1, characterized in that: The webbing in step (3) is made of EA113 polyester fiber (NECDP) woven with letters, PA / spandex core-spun yarn as the base, and EA007 polyester fiber (CDP) as the edge.

8. The method for preparing a multi-component fiber one-bath multi-color normal pressure dyeing ribbon according to claim 7, characterized in that: The PA is one of PA6, PA66 and PA56.

9. The method for preparing a multi-component fiber one-bath multi-color normal pressure dyeing ribbon according to claim 1, characterized in that: The dyeing treatment in step (3) is specifically as follows: the ribbon is dyed in one bath, dyed at 40°C, and after 10 minutes, the temperature is increased to 70°C at a heating rate of 1°C / min, kept warm for 15 minutes, and then the temperature is increased to 100°C at a heating rate of 1°C / min, kept warm for 60 minutes, and then cooled to 60°C.

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