A kind of active cyan dye ink with high dyeing rate and its preparation method and digital printing method

Abstract

The present invention relates to the technical field of dye inks, and in particular to a high-uptake active cyan dye ink, a preparation method thereof, and a digital printing method. The present invention provides a high-uptake active cyan dye ink, which comprises the following components by weight percentage: 5-15% active cyan dye, 10-30% ethylene glycol, 1-10% polyvinyl pyrrolidone, 0.1-2% triethanolamine, 0.1-2% pH buffer, 0.1-1% bactericide, 1-5% phycocyanin, and the balance is deionized water. The active cyan dye ink provided by the present invention improves the uptake rate of the active cyan dye by enhancing the binding force between the active cyan dye and the fiber, improving the surface properties of the fiber and protecting the stability of the active cyan dye.

Description

Technical Field

[0001] The invention relates to the technical field of dye inks, and in particular to an active cyan dye ink with a high dye uptake rate, a preparation method thereof, and a digital printing method. Background Art

[0002] The cyan dye ink used in reactive dye digital printing has a dye matrix of copper phthalocyanine structure, which has poor directness and low fixation rate. Digital printing uses the four-color principle to produce colors, and cyan, magenta, yellow and black are the four essential basic inks. Among them, reactive cyan dye ink is generally configured with CI reactive blue 15 dye. This dye has a titanium bronze structure. Because its structure belongs to a nonlinear coplanar configuration, it has low affinity for fibers and is less reactive than other types of reactive dyes. Therefore, the fixation rate after printing is not as high as other dyes. However, the color of digital printing requires the combination of various dye inks. If the fixation rate of one of the colors is low, the overall color performance will be affected.

[0003] Therefore, how to improve the fixation rate of reactive cyan dyes is an issue worthy of attention. Summary of the invention

[0004] The present invention provides a high-dyeing-uptake reactive cyan dye ink, a preparation method thereof and a digital printing method. The reactive cyan dye ink provided by the present invention has a high dyeing-uptake rate, can significantly improve the fixation rate of the reactive cyan dye on the fiber, and the hue and fastness of the fabric after printing are less affected.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The invention provides an active cyan dye ink with a high dye uptake rate, which comprises the following components by weight percentage: 5-15% active cyan dye, 10-30% ethylene glycol, 1-10% polyvinyl pyrrolidone, 0.1-2% triethanolamine, 0.1-2% pH buffer, 0.1-1% bactericide, 1-5% phycocyanin, and the balance is deionized water.

[0007] The present invention utilizes the specific interaction between phycocyanin and the active cyan dye to enhance the binding force between the active cyan dye and the fiber, improves the surface properties of the fiber, protects the stability of the active cyan dye, and increases the dyeing rate of the active cyan dye.

[0008] Specifically, phycocyanin contains abundant amino acids, especially nitrogenous amino acids, such as glutamic acid, lysine, etc. These amino acids have extremely strong hydrophilicity and polarity, and can produce affinity such as hydrogen bond and electrostatic action with the dye group in the active cyan dye. This enhanced affinity enables the active cyan dye to be better combined with the fiber and improve the dye uptake. Then, phycocyanin has certain surface activity, and can increase the adsorption capacity of the fiber to the active cyan dye molecule by changing the surface charge or polarity of the fiber. The fiber surface usually has a certain negative charge, and phycocyanin, as a protein with a positive charge, can promote the adsorption of the active cyan dye through charge interaction, thereby improving the dyeing effect. In addition, when phycocyanin is used together with the active cyan dye, a certain complex may be formed during the dyeing process to enhance the permeability and fixation of the active cyan dye on the fiber surface. This complex may have a strong dyeing stability, which can effectively reduce the loss or migration of the active cyan dye, thereby improving the dye uptake of the active cyan dye. At the same time, phycocyanin itself has antioxidant properties, which can protect the active cyan dye molecules and prevent the active cyan dye from oxidative degradation during the dyeing process, thereby maintaining the activity of the active cyan dye molecules and improving the efficiency of the active cyan dyeing process.

[0009] Preferably, the following components are included by weight percentage: 8-12% active cyan dye, 25-30% ethylene glycol, 3-8% polyvinyl pyrrolidone, 0.5-1% triethanolamine, 1-2% pH buffer, 0.5-1% bactericide, 2-5% phycocyanin, and the balance is deionized water.

[0010] Preferably, the following components are included by weight percentage: 8-12% active cyan dye, 25-30% ethylene glycol, 3-8% polyvinyl pyrrolidone, 0.5-1% triethanolamine, 1-2% pH buffer, 0.5-1% bactericide, 2-3% phycocyanin, and the balance is deionized water.

[0011] Preferably, the fungicide is 2-methyl-4-isothiazoline-3-one, and the polyvinyl pyrrolidone is polyvinyl pyrrolidone K30.

[0012] Preferably, the pH buffer is one of disodium hydrogen phosphate-sodium dihydrogen phosphate buffer, phthalic acid-hydrochloric acid buffer, disodium hydrogen phosphate-citric acid buffer, and citric acid-sodium hydroxide-hydrochloric acid buffer, and the concentration is 0.05-2 mol / L.

[0013] The invention provides a method for preparing an active cyan dye ink with a high dye uptake rate. Active cyan dye, ethylene glycol, polyvinyl pyrrolidone, triethanolamine, a bactericide, phycocyanin and deionized water are ultrasonically mixed to obtain a mixed solution, and the pH value of the mixed solution is adjusted to 7.0-8.0 with a pH buffer solution to obtain the active cyan dye ink with a high dye uptake rate.

[0014] Preferably, the ultrasonication time is 30 to 120 minutes.

[0015] The present invention provides a digital printing method using reactive cyan dye ink with high dye uptake rate, comprising:

[0016] S1. urea, sodium bicarbonate, sodium alginate and water are mixed to obtain a pre-printing solution;

[0017] S2. The fabric is immersed in the pre-printing solution prepared in S1, and the fabric is pressed and de-liquidated after the immersion. After the end, the fabric is immersed in the pre-printing solution prepared in S1 again, and the fabric is pressed and de-liquidated after the immersion to complete the sizing to obtain a fabric with liquid;

[0018] S3. The liquid-carrying fabric of S2 is pre-dried, and then the reactive cyan dye ink with high dye uptake as claimed in any one of claims 1 to 4 is printed on the dried fabric, and then pre-dried to obtain an inkjet fabric;

[0019] S4. The inkjet fabric of S3 is subjected to steaming and color fixing treatment, followed by alternating washing with hot and cold water and then soap boiling treatment, and then washed with hot and cold water again and then dried.

[0020] Preferably, in S1, the mass ratio of urea, sodium bicarbonate, sodium alginate and water is 6:3:3:88.

[0021] Preferably, in S2, the liquid-carrying rate of the liquid-carrying fabric is 80-90%.

[0022] Preferably, in S4, the steaming fixation method is: steaming at 100-105° C. for 10-15 min, the soap boiling method is: soap boiling at 95-100° C. for 5-10 min, and the soaping agent is 2-5 g / L soap flakes.

[0023] Therefore, the present invention has the following beneficial effects:

[0024] (1) The present invention utilizes phycocyanin to improve the fixation rate of active cyan on fibers, and successfully prepares active cyan dye ink with a high dyeing rate by adding phycocyanin to active cyan dye ink.

[0025] (2) The reactive cyan dye ink provided by the present invention improves the surface properties of the fiber and protects the stability of the reactive cyan dye by enhancing the binding force between the reactive cyan dye and the fiber, thereby increasing the dyeing rate of the reactive cyan dye.

[0026] (3) The fixation rate of the reactive cyan dye ink provided by the present invention on the fiber is found to be significantly improved after digital printing, and the hue and fastness are less affected after printing; compared with traditional inks, the fixation rate is increased from 60% to 90%. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a diagram of the mechanism of action of reactive cyan dye and phycocyanin;

[0028] Figure 2 This is a real picture of fabrics dyed with the active cyan dye ink with high dye uptake rate of the present invention and the traditional ink active cyan dye. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with specific embodiments. Those of ordinary skill in the art will be able to implement the present invention based on these descriptions. In addition, the embodiments of the present invention involved in the following description are generally only embodiments of a part of the present invention, rather than all embodiments. Therefore, based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work should fall within the scope of protection of the present invention.

[0030] The sources of all raw materials in this section are as follows: the reactive cyan dye used is CI reactive blue 15 dye, purchased from Yongguang; the reactive orange dye used is CI reactive orange 13, purchased from Yongguang; traditional ink 1 is traditional ink reactive cyan, purchased from Yongguang; traditional ink 2 is traditional ink reactive orange, purchased from Yongguang; fabric, 100% mulberry silk, purchased from Wanshili Silk Digital Technology Co., Ltd.

[0031] [Example]

[0032] Example 1

[0033] Ink preparation: 10g of reactive cyan dye (CI reactive blue 15 dye), 30g of ethylene glycol, 5g of polyvinyl pyrrolidone K30, 1g of triethanolamine, 0.8g of 2-methyl-4-isothiazoline-3-one, 3g of phycocyanin, and 49.2g of deionized water were ultrasonically mixed for 60 minutes to obtain a mixed solution, and the pH value of the mixed solution was adjusted to 7.0-8.0 with 1g of 2mol / L phthalic acid-hydrochloric acid buffer to obtain a reactive cyan dye ink with a high dyeing rate.

[0034] Digital printing:

[0035] S1.6 g urea, 3 g sodium bicarbonate, 3 g sodium alginate and 88 g water were mixed to obtain a pre-printing solution;

[0036] S2. A 15 cm × 15 cm fabric is immersed in the pre-printing solution prepared in S1, and the fabric is pressed to remove the liquid after the immersion. After the immersion, the fabric is immersed in the pre-printing solution prepared in S1 again, and the fabric is pressed to remove the liquid after the immersion to complete the sizing, and a liquid-carrying fabric with a liquid rate of 85% ± 5% is obtained;

[0037] S3. The liquid-carrying fabric of S2 was dried at 60°C for 10 min, and then the above-mentioned high dyeing rate reactive cyan dye ink was printed on the dried fabric, and dried at 60°C for 10 min to obtain an inkjet fabric;

[0038] S4. The inkjet fabric of S3 was steamed at 102℃ for 12min, then washed with cold and hot water alternately, the cold water was room temperature water, and the hot water was 60℃ water; then soaped at 95℃ for 5min, the soap detergent was 3g / L soap flakes, and then washed with cold and hot water alternately again, the cold water was room temperature water, and the hot water was 60℃ water. Finally, the printed fabric was dried at 60℃ for 10min.

[0039] Example 2

[0040] This embodiment is basically the same as Embodiment 1, except that: the amount of phycocyanin used in the preparation of the ink is 2 g, and the amount of deionized water used is 50.2 g.

[0041] Example 3

[0042] This embodiment is basically the same as embodiment 1, except that the amount of phycocyanin used in the preparation of the ink is 4 g, and the amount of deionized water used is 48.2 g.

[0043] Example 4

[0044] This embodiment is basically the same as Embodiment 1, except that: the amount of phycocyanin used in the preparation of the ink is 5 g, and the amount of deionized water used is 47.2 g.

[0045] Comparative Example 1

[0046] This comparative example is basically the same as Example 1, except that the reactive cyan dye (CI Reactive Blue 15 dye) is replaced with an equal amount of reactive orange dye (CI Reactive Orange 13) in the preparation of the ink.

[0047] Comparative Example 2

[0048] This comparative example is basically the same as Example 1, except that the amount of phycocyanin used in the ink preparation is 1 g, and the amount of deionized water used is 51.2 g.

[0049]

Performance test

[0050] Examples 1 to 4, Comparative Examples 1 to 2 and conventional inks were all subjected to inkjet printing according to the digital printing process of Example 1 to obtain printed fabrics. The color fixation rate was determined according to the following color fixation rate detection method, and the results are shown in Table 1.

[0051] Fixation rate detection method: Test the apparent color depth (K / S value) of the fabric sample on a YS4510 colorimeter under D65 light source and 10° observation angle.

[0052]

[0053] Where: A1 and A2 are the absorbance values ​​of the total washing liquid of the cloth samples after steaming and before steaming.

[0054] Table 1 Fixation rate results

[0055] Fixation rate Example 1 90％ Example 2 82％ Example 3 77％ Example 4 70％ Comparative Example 2 65％ Traditional ink1 60％ Comparative Example 1 70％ Traditional ink 2 67％

[0056] It can be seen from Table 1 that the reactive cyan dye ink provided by the present invention has a high dyeing rate and can achieve a firm bond with fabric fibers. Compared with traditional inks, its color fixation rate is increased from 60% to 90%. In addition, when the reactive cyan is replaced with reactive orange, its color fixation rate is not superior to that of traditional inks. This indicates that phycocyanin only forms a certain complex with the reactive cyan dye during the dyeing process (such as Figure 1 As shown in the figure), the combination of active blue and fabric fibers becomes stronger, which ultimately results in a significant increase in the color fixation rate.

[0057] Furthermore, the color fastness of the printed fabric obtained in Example 1 was tested, and the printed fabric printed in the same manner with traditional ink was used as a comparison. The color fastness of the fabric to soaping was tested according to GB / T 3921-2008, the color fastness of the fabric to dry cleaning was tested according to GB / T5711-1997, the color fastness of the fabric to rubbing was tested according to GB / T 3920-2008, the color fastness of the fabric to light was tested according to GB / T 8427-2008 method 3, the color fastness of the fabric to perspiration was tested according to GB / T 3922-2013, and the color fastness of the fabric to water was tested according to GB / T 5713-2013; the results are shown in Table 2.

[0058] Table 2 Color fastness comparison table

[0059]

[0060]

[0061] It can be seen from Table 2 that the hue and fastness of the reactive cyan dye ink provided by the present invention are less affected after printing.

Claims

1. A reactive cyan dye ink with high dye uptake, characterized in that: The invention comprises the following components by weight percentage: 5-15% active cyan dye, 10-30% ethylene glycol, 1-10% polyvinyl pyrrolidone, 0.1-2% triethanolamine, 0.1-2% pH buffer, 0.1-1% bactericide, 1-5% phycocyanin, and the balance is deionized water.

2. The high-uptake reactive cyan dye ink according to claim 1, characterized in that: The invention comprises the following components by weight percentage: 8-12% active cyan dye, 25-30% ethylene glycol, 3-8% polyvinyl pyrrolidone, 0.5-1% triethanolamine, 1-2% pH buffer, 0.5-1% bactericide, 2-5% phycocyanin, and the balance is deionized water.

3. The active cyan dye ink with high dye uptake as claimed in claim 1 or 2, characterized in that: The bactericide is 2-methyl-4-isothiazoline-3-one, and the polyvinyl pyrrolidone is polyvinyl pyrrolidone K30.

4. The active cyan dye ink with high dye uptake as claimed in claim 1 or 2, characterized in that: The pH buffer is one of disodium hydrogen phosphate-sodium dihydrogen phosphate buffer, phthalic acid-hydrochloric acid buffer, disodium hydrogen phosphate-citric acid buffer, and citric acid-sodium hydroxide-hydrochloric acid buffer, and the concentration is 0.05-2 mol / L.

5. The method for preparing a reactive cyan dye ink with a high dye uptake rate according to any one of claims 1 to 4, characterized in that: Active cyan dye, ethylene glycol, polyvinyl pyrrolidone, triethanolamine, bactericide, phycocyanin and deionized water are ultrasonically mixed to obtain a mixed solution, and the pH value of the mixed solution is adjusted to 7.0-8.0 with a pH buffer to obtain an active cyan dye ink with a high dyeing rate.

6. The preparation method according to claim 5, characterized in that: The ultrasonic time is 30 to 120 minutes.

7. A digital printing method using reactive cyan dye ink with high dye uptake, characterized in that: include: S1. urea, sodium bicarbonate, sodium alginate and water are mixed to obtain a pre-printing solution; S2. The fabric is immersed in the pre-printing solution prepared in S1, and the fabric is pressed and de-liquidated after the immersion. After the end, the fabric is immersed in the pre-printing solution prepared in S1 again, and the fabric is pressed and de-liquidated after the immersion to complete the sizing to obtain a fabric with liquid; S3. The liquid-carrying fabric of S2 is pre-dried, and then the reactive cyan dye ink with high dye uptake as claimed in any one of claims 1 to 4 is printed on the dried fabric, and then pre-dried to obtain an inkjet fabric; S4. The inkjet fabric of S3 is subjected to steaming and color fixing treatment, followed by washing with hot and cold water alternately and then soap boiling treatment, and then washed with hot and cold water alternately again and then dried.

8. The digital printing method according to claim 7, characterized in that: In S1, the mass ratio of urea, sodium bicarbonate, sodium alginate and water is 6:3:3:

88.

9. The digital printing method according to claim 7, characterized in that: In the above S2, the liquid impregnation rate of the liquid impregnated fabric is 70-90%.

10. The digital printing method according to claim 7, characterized in that: In S4, the steaming fixation method is: steaming at 100-105° C. for 10-15 min, the soap boiling treatment method is: soap boiling at 95-100° C. for 5-10 min, and the soaping agent is 2-5 g / L soap flakes.

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