Transfer ink as well as preparation method and application thereof

Abstract

The invention relates to transfer printing ink as well as a preparation method and application thereof, and belongs to the technical field of ink. The transfer printing ink comprises the following components: modified acrylic resin, a surfactant, a dye, a lubricant, other auxiliary agents and deionized water, the preparation method of the modified acrylic resin comprises the following steps: mixing acrylic acid, ethyl methacrylate, hydroxyethyl acrylate, fumed silica, lauryl sodium sulfate, an initiator and deionized water, heating, adding an antibacterial agent, glycidyl methacrylate and absolute ethyl alcohol, and stirring at a constant temperature to obtain the modified acrylic resin. The prepared modified acrylic resin provides excellent dispersion stability for other components, so that the ink can keep stable flowability and viscosity for a long time, the problems of gelling, oil-water separation, thickening and the like are not easily generated, and the antibacterial property, hardness and adhesive force of the ink are remarkably improved; the water-based ink formed by mixing the components is ensured to have high film-forming hardness, remarkable antibacterial property and strong adhesive force to a base material.

Description

Technical Field

[0001] The invention belongs to the technical field of ink and relates to a transfer ink and a preparation method and application thereof. Background Art

[0002] Transfer ink is mainly composed of the following key components: dye, as the source of color, gives the ink a specific color; acrylic resin, as a binder, plays a role in fixing the dye and improving the adhesion of the ink; lubricant, used to improve the fluidity and printing effect of the ink; surfactant, which helps the ink to spread evenly on the surface of the substrate; and other additives, such as stabilizers, antioxidants, etc., used to improve the stability and durability of the ink. In addition, deionized water, as a solvent, helps to adjust the viscosity and fluidity of the ink, making the ink more suitable for the transfer process. These components, through precise proportions and preparation processes, together constitute a transfer ink with excellent performance.

[0003] However, traditional acrylic resin inks have defects such as low adhesion, poor water resistance, poor mechanical strength, and no antibacterial properties. Schiff base compounds are easy to synthesize and can react with metal ions to construct Schiff base metal complexes with diverse structures and properties. The reduction, amination and substitution of Schiff bases can prepare important fine chemical intermediates such as secondary amines and tertiary amines. Schiff bases and their complexes have good antibacterial, antioxidant, anti-tuberculosis, and anti-cancer biological activities. Summary of the invention

[0004] The purpose of the present invention is to provide a transfer ink and its preparation method and application. The present invention provides excellent dispersion stability for other components through the prepared modified acrylic resin, which can keep the ink stable in fluidity and viscosity for a long time and is not prone to gelation, oil-water separation, coarsening and other problems. At the same time, it also significantly improves the antibacterial property, hardness and adhesion of the ink, ensuring that the water-based ink mixed with these components has high film hardness, significant antibacterial properties and strong adhesion to the substrate.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A transfer ink comprising the following components by weight: 25-30 parts of modified acrylic resin, 0.7-1.0 parts of surfactant, 21-24 parts of dye, 22-25 parts of lubricant, 40-45 parts of other additives and 45-55 parts of deionized water.

[0006] As a preferred technical solution of the present invention, the surfactant is prepared by mixing acetylene glycol polyoxyethylene ether and dimethyl octyne glycol in a mass ratio of 1.2-1.5:4.

[0007] As a preferred technical solution of the present invention, the lubricant is prepared by mixing sodium methacrylate and sodium lignin sulfonate in a mass ratio of 1.0-1.5:9-10.

[0008] As a preferred technical solution of the present invention, the other auxiliary agent is prepared by mixing propylene glycol, glycerol and triethanolamine in a mass ratio of 28-30:11-13:0.3-0.5.

[0009] As a preferred technical solution of the present invention, the dye is one or more of disperse red, disperse blue and disperse yellow; disperse red 60 is used in the embodiments and comparative examples of the present invention.

[0010] As a preferred technical solution of the present invention, the preparation method of the modified acrylic resin comprises the following steps: Acrylic acid, ethyl methacrylate, hydroxyethyl acrylate, fumed silica, sodium dodecyl sulfate, an initiator and deionized water are mixed and heated, an antibacterial agent, glycidyl methacrylate and anhydrous ethanol are added, stirred at a constant temperature, cooled, and the pH value is adjusted to obtain an acrylic resin.

[0011] As a preferred technical solution of the present invention, the heating temperature is heating to 60-65°C; the constant temperature stirring is stirring at 65-72°C for 2.0-3.0h; the cooling is cooling to 40-45°C; and the pH value is adjusted to 7.5.

[0012] As a preferred technical solution of the present invention, the mass ratio of acrylic acid, ethyl methacrylate, hydroxyethyl acrylate, fumed silica, sodium dodecyl sulfate, initiator, deionized water, antibacterial agent, glycidyl methacrylate and anhydrous ethanol is 20-21:34-40:3.8-4.2:2-3:0.5-0.8:0.8-1.0:45-50:1.2-1.5:4-6:10-13; the initiator is ammonium persulfate.

[0013] As a preferred technical solution of the present invention, the preparation method of the antibacterial agent comprises the following steps: S1, mixing p-aminobenzoic acid, 3-mercaptopropanol and deionized water, performing ultrasonic treatment, and freeze-drying to obtain composite particles; S2, mixing the composite particles and ethanol aqueous solution, adding the composite monomer and stirring at constant temperature, centrifuging to remove the supernatant, washing, and vacuum drying to obtain an intermediate; S3. Place the intermediate in an inorganic salt solution, stir and mix, let stand, filter, and vacuum dry to obtain the product.

[0014] As a preferred technical solution of the present invention, in step S1, the ultrasonic treatment is performed at a power of 1000-1200 W for 10-15 min; the mass ratio of p-aminobenzoic acid, 3-mercaptopropanol and deionized water is 8-9:1.5-1.8:30-40.

[0015] As a preferred technical solution of the present invention, in step S2, the constant temperature stirring is stirring at a temperature of 45-52°C for 6-8h; the washing is washing with anhydrous ethanol for 3 times; the vacuum drying is vacuum drying at a temperature of 60-70°C to constant weight; the mass ratio of the composite particles, the ethanol aqueous solution and the composite monomer is 10-13:140-150:13.5-15.0; the composite monomer is composed of acrolein and pyridine carboxaldehyde in a mass ratio of 1.8-2.1:2.6-3.0; the concentration of the ethanol aqueous solution is 20wt%; the pyridine carboxaldehyde is 4-pyridine carboxaldehyde, which is a nitrogen-containing heterocyclic compound with good physiological and pharmacological activity. In the design of antibacterial agents, the introduction of a pyridine ring can usually improve the biochemical efficacy and metabolic stability of the antibacterial component and enhance permeability.

[0016] As a preferred technical solution of the present invention, in step S3, the stirring and mixing is stirring at a speed of 500-800rpm for 30-45min; the standing time is 2-3h; the vacuum drying is vacuum drying at a temperature of 70-80°C to constant weight; the mass ratio of the intermediate to the inorganic salt solution is 12-14:40-50; the inorganic salt solution is formed by mixing a metal salt and deionized water in a mass ratio of 1.0-1.3:25-30; the metal salt is one or more of silver nitrate, copper nitrate, copper chloride and silver chloride.

[0017] The invention discloses a method for preparing transfer ink, which comprises the following steps: stirring a dye, a lubricant, 1 / 3 of other auxiliary agents and 1 / 3 of deionized water at a rotation speed of 500-800 rpm for 30-40 minutes, adding a modified acrylic resin, a surfactant, the remaining other auxiliary agents and the remaining deionized water, and stirring at a rotation speed of 600-900 rpm for 45-60 minutes to obtain the transfer ink.

[0018] The invention discloses a transfer ink, which can perform transfer printing treatment on a printing substrate and a printing layer preformed on the surface thereof. The printing substrate is textiles, ceramics, metals and the like.

[0019] Beneficial effects of the present invention: The modified acrylic resin prepared by the present invention provides excellent dispersion stability for other components, can keep the ink at stable fluidity and viscosity for a long time, and is not prone to problems such as gelation, oil-water separation and coarsening. At the same time, it also significantly improves the antibacterial property, hardness and adhesion of the ink, ensuring that the water-based ink mixed with these components has high film hardness, significant antibacterial performance and strong adhesion to the substrate. DETAILED DESCRIPTION

[0020] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in combination with the embodiments. Example 1

[0021] A transfer ink comprises the following components by weight: 25 parts of modified acrylic resin, 0.7 parts of surfactant, 21 parts of dye, 22 parts of lubricant, 40 parts of other additives and 45 parts of deionized water; the surfactant is prepared by mixing acetylene glycol polyoxyethylene ether and dimethyl octyne glycol in a mass ratio of 1.2:4; the lubricant is prepared by mixing sodium methacrylate and sodium lignin sulfonate in a mass ratio of 1.0:9; the other additives are prepared by mixing propylene glycol, glycerol and triethanolamine in a mass ratio of 28:11:0.3.

[0022] Wherein, the preparation method of the modified acrylic resin comprises the following steps: Acrylic acid, ethyl methacrylate, hydroxyethyl acrylate, fumed silica, sodium dodecyl sulfate, initiator and deionized water are mixed, heated to 60°C, antibacterial agent, glycidyl methacrylate and anhydrous ethanol are added, stirred at 65°C for 2.0h, cooled to 40°C, and the pH value is adjusted to 7.5 to obtain acrylic resin; wherein the mass ratio of acrylic acid, ethyl methacrylate, hydroxyethyl acrylate, fumed silica, sodium dodecyl sulfate, initiator, deionized water, antibacterial agent, glycidyl methacrylate and anhydrous ethanol is 20:34:3.8:2:0.5:0.8:45:1.2:4:10; and the initiator is ammonium persulfate.

[0023] The preparation method of the antibacterial agent comprises the following steps: S1. Mix p-aminobenzoic acid, 3-mercaptopropanol and deionized water, ultrasonicate at 1000 W for 10 min, and freeze-dry to obtain composite particles; wherein the mass ratio of p-aminobenzoic acid, 3-mercaptopropanol and deionized water is 8:1.5:30; S2, mixing the composite particles and the ethanol aqueous solution, adding the composite monomer, stirring at 45°C for 6 hours, centrifuging to remove the supernatant, washing with anhydrous ethanol for 3 times, and vacuum drying at 60°C to constant weight to obtain an intermediate; wherein the mass ratio of the composite particles, the ethanol aqueous solution and the composite monomer is 10:140:13.5; the composite monomer is composed of acrolein and pyridine formaldehyde in a mass ratio of 1.8:2.6; S3. Place the intermediate in an inorganic salt solution and stir at a speed of 500 rpm for 30 minutes, let it stand for 2 hours, filter, and vacuum dry at 70°C to constant weight to obtain the product; wherein the mass ratio of the intermediate to the inorganic salt solution is 12:40; the inorganic salt solution is formed by mixing a metal salt and deionized water in a mass ratio of 1.0:25; and the metal salt is formed by mixing silver nitrate and copper nitrate in a mass ratio of 1:4.

[0024] A method for preparing transfer ink comprises the following steps: after a dye, a lubricant, 1 / 3 other auxiliary agents and 1 / 3 deionized water are stirred at a speed of 500 rpm for 30 minutes, a modified acrylic resin, a surfactant, the remaining other auxiliary agents and the remaining deionized water are added and stirred at a speed of 600 rpm for 45 minutes to obtain the transfer ink. Example 2

[0025] A transfer ink comprises the following components by weight: 27 parts of modified acrylic resin, 0.8 parts of surfactant, 22 parts of dye, 23 parts of lubricant, 42 parts of other additives and 48 parts of deionized water; the surfactant is prepared by mixing acetylene glycol polyoxyethylene ether and dimethyl octyne glycol in a mass ratio of 1.3:4; the lubricant is prepared by mixing sodium methacrylate and sodium lignin sulfonate in a mass ratio of 1.2:9.5; the other additives are prepared by mixing propylene glycol, glycerol and triethanolamine in a mass ratio of 28.5:11.5:0.35.

[0026] Wherein, the preparation method of the modified acrylic resin comprises the following steps: Acrylic acid, ethyl methacrylate, hydroxyethyl acrylate, fumed silica, sodium dodecyl sulfate, initiator and deionized water are mixed, heated to 62°C, antibacterial agent, glycidyl methacrylate and anhydrous ethanol are added, stirred at 67°C for 2.5 hours, cooled to 42°C, and the pH value is adjusted to 7.5 to obtain acrylic resin; wherein the mass ratio of acrylic acid, ethyl methacrylate, hydroxyethyl acrylate, fumed silica, sodium dodecyl sulfate, initiator, deionized water, antibacterial agent, glycidyl methacrylate and anhydrous ethanol is 20.5:36:4.0:2.3:0.6:0.85:47:1.3:4.5:11; and the initiator is ammonium persulfate.

[0027] The preparation method of the antibacterial agent comprises the following steps: S1. Mix p-aminobenzoic acid, 3-mercaptopropanol and deionized water, ultrasonicate at 1060 W for 12 min, and freeze-dry to obtain composite particles; wherein the mass ratio of p-aminobenzoic acid, 3-mercaptopropanol and deionized water is 8.3:1.6:35; S2, mixing the composite particles and the ethanol aqueous solution, adding the composite monomer, stirring at 47°C for 6.5h, centrifuging to remove the supernatant, washing with anhydrous ethanol for 3 times, and vacuum drying at 65°C to constant weight to obtain an intermediate; wherein the mass ratio of the composite particles, the ethanol aqueous solution and the composite monomer is 11:145:14; the composite monomer is composed of acrolein and pyridine formaldehyde in a mass ratio of 1.9:2.7; S3. Place the intermediate in an inorganic salt solution and stir at 600 rpm for 35 min, let stand for 2.5 h, filter, and vacuum dry at 75°C to constant weight to obtain the product; wherein the mass ratio of the intermediate to the inorganic salt solution is 12.5:45; the inorganic salt solution is formed by mixing metal salt and deionized water in a mass ratio of 1.1:27; the metal salt is formed by mixing silver nitrate and copper nitrate in a mass ratio of 1:4.

[0028] A method for preparing transfer ink comprises the following steps: after stirring a dye, a lubricant, 1 / 3 other auxiliary agents and 1 / 3 deionized water at a rotation speed of 600 rpm for 35 minutes, adding a modified acrylic resin, a surfactant, the remaining other auxiliary agents and the remaining deionized water and stirring at a rotation speed of 700 rpm for 50 minutes to obtain the transfer ink. Example 3

[0029] A transfer ink comprises the following components by weight: 28 parts of modified acrylic resin, 0.9 parts of surfactant, 23 parts of dye, 24 parts of lubricant, 43 parts of other additives and 52 parts of deionized water; the surfactant is prepared by mixing acetylene glycol polyoxyethylene ether and dimethyl octyne glycol in a mass ratio of 1.4:4; the lubricant is prepared by mixing sodium methacrylate and sodium lignin sulfonate in a mass ratio of 1.3:9.5; the other additives are prepared by mixing propylene glycol, glycerol and triethanolamine in a mass ratio of 29.5:12:0.45.

[0030] Wherein, the preparation method of the modified acrylic resin comprises the following steps: Acrylic acid, ethyl methacrylate, hydroxyethyl acrylate, fumed silica, sodium dodecyl sulfate, initiator and deionized water are mixed, heated to 63°C, antibacterial agent, glycidyl methacrylate and anhydrous ethanol are added, stirred at 70°C for 2.7h, cooled to 43°C, and the pH value is adjusted to 7.5 to obtain acrylic resin; wherein the mass ratio of acrylic acid, ethyl methacrylate, hydroxyethyl acrylate, fumed silica, sodium dodecyl sulfate, initiator, deionized water, antibacterial agent, glycidyl methacrylate and anhydrous ethanol is 20.5:38:4.0:2.7:0.7:0.95:48:1.4:5.5:12; and the initiator is ammonium persulfate.

[0031] The preparation method of the antibacterial agent comprises the following steps: S1. Mix p-aminobenzoic acid, 3-mercaptopropanol and deionized water, ultrasonicate at 1130 W for 13 min, and freeze-dry to obtain composite particles; wherein the mass ratio of p-aminobenzoic acid, 3-mercaptopropanol and deionized water is 8.5:1.5:38; S2, mixing the composite particles and ethanol aqueous solution, adding the composite monomer, stirring at 50°C for 7.5h, centrifuging to remove the supernatant, washing with anhydrous ethanol for 3 times, and vacuum drying at 65°C to constant weight to obtain an intermediate; wherein the mass ratio of the composite particles, ethanol aqueous solution and composite monomer is 12:145:14.5; the composite monomer is composed of acrolein and pyridine formaldehyde in a mass ratio of 2.0:2.9; S3. Place the intermediate in an inorganic salt solution, stir at 700 rpm for 40 min, let stand for 2.5 h, filter, and vacuum dry at 75°C to constant weight to obtain the product; wherein the mass ratio of the intermediate to the inorganic salt solution is 13.5:45; the inorganic salt solution is formed by mixing metal salt and deionized water in a mass ratio of 1.2:28; the metal salt is formed by mixing silver nitrate and copper nitrate in a mass ratio of 1:4.

[0032] A method for preparing transfer ink comprises the following steps: after a dye, a lubricant, 1 / 3 other auxiliary agents and 1 / 3 deionized water are stirred at a rotation speed of 700 rpm for 35 minutes, a modified acrylic resin, a surfactant, the remaining other auxiliary agents and the remaining deionized water are added and stirred at a rotation speed of 800 rpm for 55 minutes to obtain the transfer ink. Example 4

[0033] A transfer ink comprises the following components by weight: 30 parts of modified acrylic resin, 1.0 part of surfactant, 24 parts of dye, 25 parts of lubricant, 45 parts of other additives and 55 parts of deionized water; the surfactant is prepared by mixing acetylene glycol polyoxyethylene ether and dimethyl octyne glycol in a mass ratio of 1.5:4; the lubricant is prepared by mixing sodium methacrylate and sodium lignin sulfonate in a mass ratio of 1.5:10; the other additives are prepared by mixing propylene glycol, glycerol and triethanolamine in a mass ratio of 30:13:0.5.

[0034] Wherein, the preparation method of the modified acrylic resin comprises the following steps: Acrylic acid, ethyl methacrylate, hydroxyethyl acrylate, fumed silica, sodium dodecyl sulfate, initiator and deionized water are mixed, heated to 65°C, antibacterial agent, glycidyl methacrylate and anhydrous ethanol are added, stirred at 72°C for 3.0h, cooled to 45°C, and the pH value is adjusted to 7.5 to obtain acrylic resin; wherein the mass ratio of acrylic acid, ethyl methacrylate, hydroxyethyl acrylate, fumed silica, sodium dodecyl sulfate, initiator, deionized water, antibacterial agent, glycidyl methacrylate and anhydrous ethanol is 21:40:4.2:3:0.8:1.0:50:1.5:6:13; and the initiator is ammonium persulfate.

[0035] The preparation method of the antibacterial agent comprises the following steps: S1. Mix p-aminobenzoic acid, 3-mercaptopropanol and deionized water, ultrasonicate at 1200 W for 15 min, and freeze-dry to obtain composite particles; wherein the mass ratio of p-aminobenzoic acid, 3-mercaptopropanol and deionized water is 9:1.8:40; S2, mixing the composite particles and the ethanol aqueous solution, adding the composite monomer, stirring at 52°C for 8 hours, centrifuging to remove the supernatant, washing with anhydrous ethanol for 3 times, and vacuum drying at 70°C to constant weight to obtain an intermediate; wherein the mass ratio of the composite particles, the ethanol aqueous solution and the composite monomer is 13:150:15.0; the composite monomer is composed of acrolein and pyridine formaldehyde in a mass ratio of 2.1:3.0; S3. Place the intermediate in an inorganic salt solution, stir at 800 rpm for 45 min, let stand for 3 h, filter, and vacuum dry at 80°C to constant weight to obtain the product; wherein the mass ratio of the intermediate to the inorganic salt solution is 14:50; the inorganic salt solution is formed by mixing metal salt and deionized water in a mass ratio of 1.3:30; the metal salt is formed by mixing silver nitrate and copper nitrate in a mass ratio of 1:4.

[0036] A method for preparing transfer ink comprises the following steps: after a dye, a lubricant, 1 / 3 of other additives and 1 / 3 of deionized water are stirred at a speed of 800 rpm for 40 minutes, a modified acrylic resin, a surfactant, the remaining other additives and the remaining deionized water are added and stirred at a speed of 900 rpm for 60 minutes to obtain the transfer ink.

[0037] Comparative Example 1 Compared with Example 3, Comparative Example 1 is different in that glycidyl methacrylate is not used, and the rest are the same.

[0038] Comparative Example 2 Compared with Example 3, Comparative Example 2 is different in that 3-mercaptopropanol is not used, and the rest are the same.

[0039] Comparative Example 3 Compared with Example 3, Comparative Example 3 is different in that acrolein is used instead of pyridinecarboxaldehyde, and the rest are the same.

[0040] Comparative Example 4 Compared with Example 3, Comparative Example 4 is different in that pyridine carboxaldehyde is used instead of acrolein, and the rest are the same.

[0041] Comparative Example 5 Compared with Example 3, Comparative Example 5 is different in that acrolein and pyridine carboxaldehyde are not used, and the rest are the same.

[0042] Comparative Example 6 Compared with Example 3, Comparative Example 6 is different in that no metal salt is used, and the rest are the same.

[0043] Comparative Example 7 Compared with Example 3, Comparative Example 7 is different in that p-aminobenzoic acid is not used, and the rest are the same.

[0044] The inks prepared in Examples 1-4 and Comparative Examples 1-7 were cured and subjected to the following performance tests, respectively. The test results are shown in Table 1.

[0045] Antibacterial test: According to GB / T 21866-2008; Hardness test: According to GB / T6739-2006; Table 1

[0046] From the test results in Table 1, it can be seen that compared with Comparative Examples 1-7, the inks prepared in Examples 1-4 of the present invention have excellent antibacterial properties and mechanical hardness.

[0047] From Table 1, combined with comparative analysis of Examples 1-4 and Comparative Examples 1-7, it can be seen that this is because the present invention provides excellent dispersion stability for silica and other components by adding epoxy groups of glycidyl methacrylate. Therefore, adding fumed silica to the ink of the present application can keep the ink at a stable fluidity and viscosity for a long time, and is not prone to problems such as gelation, oil-water separation, and coarsening. At the same time, it also significantly improves the antibacterial property, hardness, and adhesion of the ink, ensuring that the water-based ink mixed with these components has high film hardness and strong adhesion to the substrate.

[0048] The invention forms a Schiff base metal complex containing a pyridine structure and exerts an antibacterial effect through multiple mechanisms. Specifically, the invention forms a complex through the hydrogen bonding force between mercaptopropanol and p-aminobenzoic acid. The amino group on the p-aminobenzoic acid can form a covalent bond with acrolein and pyridine formaldehyde to obtain a Schiff base organic network structure. The mercapto group can strongly adsorb and stabilize copper salts and silver salts to finally form a Schiff base metal complex, thereby improving the stability and long-lasting antibacterial property of the metal salt. The carbon-carbon double bond on the acrolein can significantly improve the bonding force between the antibacterial agent and the acrylic resin, thereby improving the stability and durability of the effective antibacterial component and significantly improving the antibacterial property of the ink. Performance and mechanical strength, the addition of pyridine formaldehyde can improve the stability and antibacterial properties of p-aminobenzoic acid, and it can effectively adsorb inorganic metal salts when combined with acrolein and p-aminobenzoic acid, further improving its stability and durability. The carboxyl and hydroxyl groups on p-aminobenzoic acid and mercaptopropanol can also form chemical and physical bonds through glycidyl methacrylate, further improving the compatibility of the antibacterial agent in the acrylic resin ink system, and the mercapto group of mercaptopropanol can further improve the adsorption of metal salts, further improving its antibacterial properties. At the same time, its hydroxyl group can also form hydroxyl groups with the carboxyl groups on the acrylic resin, thereby improving the dispersibility of the antibacterial in the acrylic resin ink system and improving its mechanical hardness.

[0049] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any indirect modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A transfer ink, characterized in that: The components include the following by weight: 25-30 parts of modified acrylic resin, 0.7-1.0 parts of surfactant, 21-24 parts of dye, 22-25 parts of lubricant, 40-45 parts of other additives and 45-55 parts of deionized water; Wherein, the preparation method of the modified acrylic resin comprises the following steps: Acrylic acid, ethyl methacrylate, hydroxyethyl acrylate, fumed silica, sodium dodecyl sulfate, an initiator and deionized water are mixed and heated, an antibacterial agent, glycidyl methacrylate and anhydrous ethanol are added, stirred at a constant temperature, cooled, and the pH value is adjusted to obtain an acrylic resin.

2. A transfer ink according to claim 1, characterized in that: In the preparation of the modified acrylic resin, the heating temperature is heated to 60-65° C.; the constant temperature stirring is stirred at 65-72° C. for 2.0-3.0 hours; the cooling is cooled to 40-45° C.; and the pH value is adjusted to 7.

5.

3. A transfer ink according to claim 1, characterized in that: The mass ratio of acrylic acid, ethyl methacrylate, hydroxyethyl acrylate, fumed silica, sodium dodecyl sulfate, initiator, deionized water, antibacterial agent, glycidyl methacrylate and anhydrous ethanol is 20-21:34-40:3.8-4.2:2-3:0.5-0.8:0.8-1.0:45-50:1.2-1.5:4-6:10-13.

4. A transfer ink according to claim 1, characterized in that: The surfactant is prepared by mixing acetylene glycol polyoxyethylene ether and dimethyl octyne glycol in a mass ratio of 1.2-1.5:4; the lubricant is prepared by mixing sodium methacrylate and sodium lignin sulfonate in a mass ratio of 1.0-1.5:9-10; and the other additives are prepared by mixing propylene glycol, glycerol and triethanolamine in a mass ratio of 28-30:11-13:0.3-0.

5.

5. A transfer ink according to claim 1, characterized in that: The preparation method of the antibacterial agent comprises the following steps: S1, mixing p-aminobenzoic acid, 3-mercaptopropanol and deionized water, performing ultrasonic treatment, and freeze-drying to obtain composite particles; S2, mixing the composite particles and ethanol aqueous solution, adding the composite monomer and stirring at constant temperature, centrifuging to remove the supernatant, washing, and vacuum drying to obtain an intermediate; S3. Place the intermediate in an inorganic salt solution, stir and mix, let stand, filter, and vacuum dry to obtain the product.

6. A transfer ink according to claim 5, characterized in that: In step S1, the ultrasonic treatment is performed at a power of 1000-1200 W for 10-15 min; the mass ratio of p-aminobenzoic acid, 3-mercaptopropanol and deionized water is 8-9:1.5-1.8:30-40.

7. The transfer ink according to claim 5, characterized in that: In step S2, the constant temperature stirring is stirring at a temperature of 45-52°C for 6-8h; the washing is washing with anhydrous ethanol for 3 times; the vacuum drying is vacuum drying at a temperature of 60-70°C to constant weight; the mass ratio of the composite particles, the ethanol aqueous solution and the composite monomer is 10-13:140-150:13.5-15.0; the composite monomer is composed of acrolein and pyridine formaldehyde in a mass ratio of 1.8-2.1:2.6-3.

0.

8. The transfer ink according to claim 5, characterized in that: In step S3, the stirring and mixing is stirring at a speed of 500-800rpm for 30-45min; the standing time is 2-3h; the vacuum drying is vacuum drying at a temperature of 70-80°C to constant weight; the mass ratio of the intermediate to the inorganic salt solution is 12-14:40-50; the inorganic salt solution is formed by mixing a metal salt and deionized water in a mass ratio of 1.0-1.3:25-30; the metal salt is one or more of silver nitrate, copper nitrate, copper chloride and silver chloride.

9. A method for preparing a transfer ink according to any one of claims 1 to 8, characterized in that: The preparation method comprises the following steps: stirring dye, lubricant, 1 / 3 other auxiliaries and 1 / 3 deionized water at 500-800 rpm for 30-40 min, adding modified acrylic resin, surfactant, remaining other auxiliaries and remaining deionized water and stirring at 600-900 rpm for 45-60 min to obtain the product.

10. A use of the transfer ink according to any one of claims 1 to 8, characterized in that: The application is to use transfer ink to perform transfer printing on a printing substrate or a printing layer preformed on the surface of the printing substrate, and the printing substrate is any one of textiles, ceramics and metals.

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