Reactive dye one-bath same-color dyeing method for mercerized wool and cellulosic fiber blended and interwoven fabric

Abstract

The invention provides a reactive dye one-bath same-color dyeing method for mercerized wool and cellulosic fiber blended and interwoven fabric, and belongs to the technical field of textile printing and dyeing. The method comprises the following steps: carrying out one-bath one-step simultaneous dyeing on the mercerized wool and cellulosic fiber blended and interwoven fabric by adopting a reactive dye containing bis-monochloro-s-triazine in the presence of assistants such as sodium naphthalene sulfonate or a derivative thereof, peregal O-30, Albegal B, anhydrous sodium sulphate and an alkaline agent, so as to reduce the complexity of dyeing processing, improve the dyeing efficiency, and improve the dyeing quality of the mercerized wool and cellulosic fiber blended and interwoven fabric. And the wool fibers have high soaping fastness without color fixation. The dyeing method provided by the invention also has the characteristics of low cost, energy conservation, high efficiency, convenience in implementation, no need of special adjustment on processing equipment, high applicability, suitability for universal fabrics and the like.

Description

Technical Field

[0001] The invention relates to the technical field of textile printing and dyeing, and in particular to a method for dyeing mercerized wool and cellulose fiber blended and interwoven fabrics with reactive dyes in the same bath and in the same color. Background Art

[0002] Wool fabrics have a unique feel and excellent moisture absorption, warmth retention and breathability, making them the first choice for many fabric designs. Mercerized wool refers to wool that has been pre-treated with BasolanDC chlorination or protease to destroy and remove the wool scales on the surface of the wool fiber, reducing the difference between the friction coefficients of the wool in the forward and reverse directions. Wool treated with the mercerizing process can avoid felting during use, and has the characteristics of shrinkage resistance, machine washability, and anti-pilling. It also has a cashmere-like feel and silk-like luster. Due to these characteristics, mercerized wool is favored by many designers and consumers.

[0003] However, the dyeing performance of wool treated by mercerization process changes greatly, and the processing difficulty is further increased when blended or interwoven with cellulose fiber. This is because the surface structure of wool fiber changes after mercerization process, the difficulty of dyeing and diffusion of dyes is reduced, and the corresponding dyeing rate and dye adsorption amount are greatly improved. When mercerized wool and cellulose fiber (cotton or regenerated cellulose fiber) are dyed with active dyes in the same bath, mercerized wool is easier to dye, and the dyeing rate of cellulose fiber is slower, resulting in the dyeing depth of mercerized wool being greater than that of cellulose fiber under the same conditions, resulting in a "hemp gray" effect, poor fabric quality, and the quality of dyeing processing cannot be guaranteed.

[0004] At present, it is a common scheme to use different dyes to dye mercerized wool and cellulose fibers separately, such as using direct dyes to dye cellulose fibers and neutral dyes to dye mercerized wool. However, using different dyes to dye separately not only complicates the dyeing process, but also makes the dyeing quality difficult to control. Therefore, it is necessary to study a method for dyeing mercerized wool and cellulose fiber blended and interwoven fabrics with reactive dyes in the same bath and the same color to simplify the dyeing process, reduce processing costs, and improve product quality. Summary of the invention

[0005] In view of this, the present invention provides a method for dyeing mercerized wool and cellulose fiber blended and interwoven fabrics with reactive dyes in one bath and in the same color. The method comprises the following steps: using reactive dyes containing dichloro-s-triazine, in the presence of auxiliary agents, dyeing the mercerized wool and cellulose fiber blended and interwoven fabrics in one bath and in one step; the auxiliary agents include sodium naphthalenesulfonate or its derivatives, peregal O-30, abaige B, sodium sulfate, and alkali agent.

[0006] Furthermore, the dyeing method specifically comprises the following steps:

[0007] (1) Immerse the blended and interwoven fabrics of mercerized wool and cellulose fiber in a working solution of sodium naphthalenesulfonate or its derivatives for adsorption for 10-50 minutes;

[0008] (2) Adding active dyes containing dichlorotriazine, peregal O-30, and abaige B to the working solution in sequence, and adsorbing for 15-60 minutes;

[0009] (3) adding sodium sulphate and alkali agent in batches to achieve adsorption equilibrium;

[0010] (4) After heating, the color is fixed by heat preservation. The fixed fabric is washed with hot water, soap, water, and dried to obtain the finished product.

[0011] Furthermore, the dosage of sodium naphthalenesulfonate or its derivatives in step (1) is 0.5-4 g / L.

[0012] Furthermore, the bath ratio of the fabric in step (1) to the working solution of sodium naphthalenesulfonate or its derivatives is 1:5-1:20.

[0013] Furthermore, the temperature of steps (1) to (3) is 20-35°C.

[0014] Furthermore, in step (2), the amount of the active dye containing dichlorotriazine added is 1-3%, the amount of Peregal O-30 used is 0.5-2 g / L, and the amount of Albegal B used is 0.5-2 g / L.

[0015] Furthermore, in step (3), the amount of the sodium sulfate used is 20-60 g / L, and the amount of the alkali agent used is 5-10 g / L.

[0016] Furthermore, the alkaline agent is composed of sodium carbonate and ammonia water, and the ratio of sodium carbonate to ammonia water is 0.5:4-4:0.5.

[0017] Furthermore, the heating rate in step (4) is 0.5-2°C / min.

[0018] Furthermore, the insulation time in step (4) is 20-90 minutes, and the fixing temperature is 85-100°C.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention adopts a specific combination of high-temperature type dichloro-s-triazine reactive dyes, special auxiliary agents and color fixing alkali agents, and simultaneously accurately controls the dyeing adsorption-low temperature alkali addition-heating color fixing-soaping-washing to complete the dyeing process, sodium naphthalenesulfonate or its derivatives are preferentially adsorbed on the wool fiber dyeing seat, and the interaction between Peregal O-30 and Abaige B and the dye increases the solubility of the dye in water. When the temperature is increased, the dye gradually separates from Peregal O-30 and Abaige B, and as the temperature is further increased, sodium naphthalenesulfonate or its derivatives separate from the dyeing seat, and the dye is dyed. Through the dissolution of the dye and the control of the dissociation of the dyeing seat, the mercerized wool and cellulose fiber blended or interwoven fabrics are dyed simultaneously, and the dyeing process is simple, the reproducibility is good, the dyeing quality is easy to control, the fiber characteristics themselves are not affected, and the fabric can also be given better soap fastness.

[0021] The dyeing method provided by the invention has low cost, high energy efficiency, and is easy to implement, does not require special adjustment of processing equipment, has strong applicability, and can be applied to general fabrics. DETAILED DESCRIPTION

[0022] The invention provides a method for dyeing mercerized wool and cellulose fiber blended and interwoven fabrics with reactive dyes in one bath and in the same color. The method comprises the following steps: using reactive dyes containing dichloro-s-triazine, in the presence of auxiliary agents, dyeing the mercerized wool and cellulose fiber blended and interwoven fabrics with one bath and in one step; the auxiliary agents include sodium naphthalenesulfonate or its derivatives, peregal O-30, abaige B, sodium sulfate and an alkali agent.

[0023] In some embodiments of the present invention, the dyeing method specifically comprises the following steps:

[0024] (1) Immerse the blended and interwoven fabrics of mercerized wool and cellulose fiber in a working solution of sodium naphthalenesulfonate or its derivatives for adsorption for 10-50 minutes;

[0025] (2) Adding active dyes containing dichlorotriazine, peregal O-30, and abaige B to the working solution in sequence, and adsorbing for 15-60 minutes;

[0026] (3) adding sodium sulphate and alkali agent in batches to achieve adsorption equilibrium;

[0027] (4) After heating, the color is fixed by heat preservation. The fixed fabric is washed with hot water, soap, water, and dried to obtain the finished product.

[0028] In some embodiments of the present invention, the amount of sodium naphthalenesulfonate or its derivatives in step (1) is 0.5-4 g / L, preferably, the amount of sodium naphthalenesulfonate or its derivatives is 1 g / L.

[0029] In some embodiments of the present invention, the bath ratio of the fabric and the working solution of sodium naphthalenesulfonate or its derivatives in step (1) is 1:5-1:20. Preferably, the bath ratio of the fabric and the working solution of sodium naphthalenesulfonate or its derivatives is 1:20.

[0030] In some embodiments of the present invention, the temperature of steps (1)-(3) is 20-35°C, preferably, the temperature is 30°C.

[0031] In some embodiments of the present invention, the amount of the reactive dye containing dichlorotriazine added in step (2) is 1-3%, preferably the amount of the reactive dye containing dichlorotriazine added is 1%, the amount of Peregal O-30 is 0.5-2 g / L, preferably, the amount of Peregal O-30 is 2 g / L, the amount of Albegal B is 0.5-2 g / L, preferably, the amount of Albegal B is 1.5 g / L.

[0032] In some embodiments of the present invention, the amount of sodium sulfate in step (3) is 20-60 g / L, preferably, the amount of sodium sulfate is 40 g / L. The amount of the alkali agent is 5-10 g / L, preferably, the amount of the alkali agent is 10 g / L.

[0033] In some embodiments of the present invention, the alkali agent is composed of sodium carbonate and ammonia water, and the ratio of sodium carbonate to ammonia water is 0.5:4-4:0.5. Preferably, the ratio of sodium carbonate to ammonia water is 1:1.

[0034] In some embodiments of the present invention, the heating rate in step (4) is 0.5-2°C / min, preferably, the heating rate is 1°C / min.

[0035] In some embodiments of the present invention, the holding time in step (4) is 20-90 min, preferably, the holding time is 60 min, and the fixing temperature is 85-100°C, preferably, the fixing temperature is 85°C.

[0036] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0037] The experimental methods or test methods described in the following examples are conventional methods unless otherwise specified; the raw materials and auxiliary agents are obtained from conventional commercial channels or prepared by conventional methods unless otherwise specified.

[0038] Example 1

[0039] A method for dyeing mercerized wool and cellulose fiber blended and interwoven fabrics with reactive dyes in the same bath and in the same color, the specific steps are as follows:

[0040] (1) immersing a mercerized wool-viscose interwoven fabric into a sodium naphthalenesulfonate working solution, wherein the concentration of sodium naphthalenesulfonate in the sodium naphthalenesulfonate working solution is 1 g / L, the bath ratio of the fabric to the working solution is 1:20, and adsorbing at 30° C. for 15 min by shaking;

[0041] (2) taking out the fabric and squeezing out the water, adding CI Reactive Yellow 84, Peregal O-30, and Albegal B to the sodium naphthalenesulfonate working solution, and obtaining a dye solution after all of them are dissolved, immersing the fabric in the dye solution, and adsorbing at 30° C. for 15 min, wherein the amount of CI Reactive Yellow 84 is 1% (owf), the amount of Peregal O-30 is 2 g / L, and the amount of Albegal B is 1.5 g / L;

[0042] (3) adding sodium sulfate to the dye solution twice, the dosage of the sodium sulfate is 40 g / L, dyeing for 15 min, then adding a mixed alkali agent of sodium carbonate and ammonia water twice (50%:50%), the mass ratio of sodium carbonate to ammonia water is 1:1, the dosage of the mixed alkali agent is 10 g / L, dyeing at 30°C for 15 min, and adsorption equilibrium;

[0043] (4) Raising the temperature to 85° C. at a rate of 1° C. / min, maintaining the temperature at 85° C. for 60 min to fix the color, and washing the fixed color fabric with hot water, soap, acid, water, and drying to obtain a finished product.

[0044] Example 2

[0045] The difference from Example 1 is that the dye used in this example is CI Reactive Orange 84, and the other steps are consistent with Example 1.

[0046] Example 3

[0047] The difference from Example 1 is that the dye used in this example is CI Reactive Red 141, and the other steps are consistent with Example 1.

[0048] Example 4

[0049] The difference from Example 1 is that the dye used in this example is CI Reactive Red 120, and the other steps are consistent with Example 1.

[0050] Example 5

[0051] The difference from Example 1 is that the dye used in this example is CI Reactive Blue 171, and the other steps are consistent with Example 1.

[0052] Example 6

[0053] The difference from Example 1 is that the dyes used in this example are CI Reactive Yellow 84 and CI Reactive Red 141 in a mass ratio of 1:1, and the other steps are consistent with Example 1.

[0054] Example 7

[0055] The difference from Example 1 is that the dyes used in this example are CI Reactive Orange 84 and CI Reactive Red 141 in a mass ratio of 1:1, and the other steps are consistent with Example 1.

[0056] Example 8

[0057] The difference from Example 1 is that the dyes used in this example are CI Reactive Yellow 84 and CI Reactive Blue 171 in a mass ratio of 1:1, and the other steps are consistent with Example 1.

[0058] Example 9

[0059] The difference from Example 1 is that the dyes used in this example are CI Reactive Orange 84 and CI Reactive Blue 171 in a mass ratio of 1:1, and the other steps are consistent with Example 1.

[0060] Example 10

[0061] The difference from Example 1 is that the dyes used in this example are CI Reactive Red 120 and CI Reactive Blue 171 in a mass ratio of 1:1, and the remaining steps are consistent with Example 1.

[0062] Embodiment 11

[0063] The difference from Example 1 is that the dyes used in this example are CI Reactive Red 120, CI Reactive Yellow 84 and CI Reactive Blue 171 in a mass ratio of 0.5:0.5:1, and the remaining steps are consistent with Example 1.

[0064] Example 12

[0065] The difference from Example 11 is that the amount of dye used in this example is 3%, and the other steps are consistent with Example 1.

[0066] The wool and viscose fibers on the dyed fabric were separated, the K / S values ​​corresponding to the yarns of Examples 1-12 were measured, the corresponding color differences were compared, and the soap fastness of the corresponding fabrics was measured. The test results are shown in Table 1.

[0067] Table 1

[0068] Group Wool fiber K / S value Viscose fiber K / S value Soap fastness Example 1 2.4 2.3 Level 4 Example 2 6.1 6.2 Level 4 Example 3 4.2 4.3 Level 4 Example 4 4.8 4.9 Level 4 Example 5 6.3 6.2 Level 4 Example 6 3.0 2.9 Level 3-4 Example 7 7.6 7.3 Level 3-4 Example 8 5.6 5.3 Level 4 Example 9 8.4 8.3 Level 4 Example 10 8.9 9.0 Level 3-4 Embodiment 11 4.5 4.3 Level 4 Example 12 10.3 10.1 Level 3-4

[0069] As shown in Table 1, the five commonly used bis(monochlorotriazine) reactive dyes all show excellent homochromy in single color, double color and triple color. The color difference between the two fibers is less than 0.4, and the final fabric has a washing fastness greater than level 3.

[0070] Comparative Example 1

[0071] The difference from Example 5 is that no Abegar B is added during the dyeing process of this comparative example, and the remaining steps are consistent with Example 5.

[0072] Comparative Example 2

[0073] The difference from Example 5 is that, in the dyeing process of this comparative example, Peregal O-30 was not added, and the other steps were consistent with Example 5.

[0074] Comparative Example 3

[0075] The difference from Example 5 is that sodium naphthalenesulfonate is not added during the dyeing process of this comparative example, and the remaining steps are consistent with Example 5.

[0076] The wool and viscose fibers on the dyed fabric were separated, the K / S values ​​corresponding to the yarns of Example 5 and Comparative Examples 1-3 were measured, and the corresponding color differences were compared. The test results are shown in Table 2.

[0077] Table 2

[0078] Group Wool fiber K / S value Viscose fiber K / S value Example 5 6.3 6.2 Comparative Example 1 6.9 5.1 Comparative Example 2 7.4 4.3 Comparative Example 3 9.0 2.3

[0079] It can be seen from Table 2 that the use of auxiliaries in the dyeing process can effectively reduce the differences between fibers. The order of action of the three auxiliaries is sodium naphthalenesulfonate > peregal O-30 > Albegal B.

[0080] Comparative Example 4

[0081] The difference from Example 1 is that CI Reactive Yellow 145 is added during the dyeing process of this comparative example, and the other steps are consistent with Example 1.

[0082] Comparative Example 5

[0083] The difference from Example 1 is that CI Reactive Red 195 is added during the dyeing process of this comparative example, and the other steps are consistent with Example 1.

[0084] Comparative Example 6

[0085] The difference from Example 1 is that CI Reactive Black 5 is added during the dyeing process of this comparative example, and the other steps are consistent with Example 1.

[0086] Comparative Example 7

[0087] The difference from Example 1 is that CI Reactive Blue 19 is added during the dyeing process of this comparative example, and the other steps are consistent with Example 1.

[0088] The wool and viscose fibers on the dyed fabric were separated, the K / S values ​​corresponding to the yarns of Example 1 and Comparative Examples 4-7 were measured, and the corresponding color differences were compared. The test results are shown in Table 3.

[0089] Table 3

[0090] Group Wool fiber K / S value Viscose fiber K / S value Example 1 2.4 2.3 Comparative Example 4 3.0 1.2 Comparative Example 5 6.8 1.9 Comparative Example 6 7.8 2.9 Comparative Example 7 4.5 1.0

[0091] It can be seen from Table 3 that under the same dyeing process conditions, the same color performance of bis-monochloro-s-triazine dye is significantly better than other commonly used monochloro-s-triazine vinyl sulfone double-active base and vinyl sulfone single-active base dyes.

[0092] Example 13

[0093] The difference from Example 3 is that this embodiment uses mercerized wool-Tencel interwoven fabric, and the other steps are consistent with Example 3.

[0094] Embodiment 14

[0095] The difference from Example 3 is that this embodiment uses mercerized wool-cotton interwoven fabric, and the remaining steps are consistent with Example 3.

[0096] Embodiment 15

[0097] The difference from Example 3 is that this embodiment uses mercerized wool-lyocell interwoven fabric, and the remaining steps are consistent with Example 3.

[0098] The wool and fiber on the dyed fabric were separated, the K / S values ​​corresponding to the yarns of Example 3 and Examples 13-15 were measured, and the corresponding color differences were compared. The test results are shown in Table 4.

[0099] Table 4

[0100] Group Wool fiber K / S value Cellulose fiber K / S value Example 3 4.2 4.3 Example 13 4.0 4.1 Embodiment 14 4.3 4.0 Embodiment 15 4.1 4.1

[0101] It can be seen from Table 4 that under the same dyeing process conditions, natural cellulose fiber and regenerated cellulose fiber have little influence on the process, and the color difference of the two fibers can be controlled within 0.3.

[0102] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for dyeing mercerized wool and cellulose fiber blended and interwoven fabrics with reactive dyes in the same bath and in the same color, characterized in that: The method comprises the following steps: using a reactive dye containing dichloro-s-triazine, in the presence of an auxiliary agent, to dye mercerized wool and cellulose fiber blended and interwoven fabrics in one bath and one step; The auxiliary agent includes sodium naphthalenesulfonate or its derivatives, Peregal O-30, Abaige B, Sodium Sulfate and alkali agent.

2. The same-bath same-color dyeing method of mercerized wool and cellulose fiber blended and interwoven fabrics according to claim 1, characterized in that: The dyeing method specifically comprises the following steps: (1) Immerse the blended and interwoven fabrics of mercerized wool and cellulose fiber in a working solution of sodium naphthalenesulfonate or its derivatives for adsorption for 10-50 minutes; (2) Adding active dyes containing dichlorotriazine, peregal O-30, and abaige B to the working solution in sequence, and adsorbing for 15-60 minutes; (3) adding sodium sulphate and alkali agent in batches to achieve adsorption equilibrium; (4) After heating, the color is fixed by heat preservation. The fixed color fabric is washed with hot water, soaped, washed with water, and dried to obtain the finished product.

3. The same-bath same-color dyeing method of mercerized wool and cellulose fiber blended and interwoven fabrics according to claim 2, characterized in that: The dosage of sodium naphthalenesulfonate or its derivatives in step (1) is 0.5-4 g / L.

4. The same-bath same-color dyeing method of mercerized wool and cellulose fiber blended and interwoven fabrics according to claim 2, characterized in that: The bath ratio of the fabric in step (1) to the working solution of sodium naphthalenesulfonate or its derivatives is 1:5-1:

20.

5. The same-bath same-color dyeing method of mercerized wool and cellulose fiber blended and interwoven fabrics according to claim 2, characterized in that: The temperature of steps (1) to (3) is 20-35°C.

6. The same-bath same-color dyeing method of mercerized wool and cellulose fiber blended and interwoven fabrics according to claim 2, characterized in that: In step (2), the dosage of Peregal O-30 is 0.5-2 g / L, and the dosage of Abegar B is 0.5-2 g / L.

7. The same-bath same-color dyeing method of mercerized wool and cellulose fiber blended and interwoven fabrics according to claim 2, characterized in that: In step (3), the dosage of the sodium sulphate is 20-60 g / L, and the dosage of the alkali agent is 5-10 g / L.

8. The same-bath same-color dyeing method of mercerized wool and cellulose fiber blended and interwoven fabrics according to claim 7, characterized in that: The alkaline agent consists of sodium carbonate and ammonia water, and the ratio of sodium carbonate to ammonia water is 0.5:4-4:0.

5.

9. The same-bath same-color dyeing method of mercerized wool and cellulose fiber blended and interwoven fabrics according to claim 2, characterized in that: The heating rate in step (4) is 0.5-2°C / min.

10. The same-bath same-color dyeing method of mercerized wool and cellulose fiber blended and interwoven fabrics according to claim 2, characterized in that: The insulation time of step (4) is 20-90 minutes, and the fixing temperature is 85-100°C.