Novel water-based ink and preparation method thereof

Abstract

The invention relates to the field of water-based ink preparation, in particular to novel water-based ink and a preparation method thereof. The invention provides novel water-based ink. The novel water-based ink is prepared from the following components in parts by weight: 35-40 parts of epoxy resin modified polyurethane emulsion; 18 to 23 parts of an acrylate polymer emulsion; 5 to 8 parts of 2-hydroxyethylamine; 10 to 11 parts of pigment; 2-3 parts of a dispersant; 3.5 to 4.5 parts of a defoaming agent; 4-5 parts of a leveling agent; 10-12 parts of a wetting agent; and 8-12 parts of a tackifier. The invention further provides a preparation method of the novel water-based ink. The preparation method comprises the two steps of S1 base ink preparation and S2 novel water-based ink preparation. Pigment particles are uniformly dispersed in the resin by optimizing the type and dosage of the dispersing agent and adopting a high-speed grinding and dispersing process; the epoxy resin modified polyurethane emulsion and the acrylate polymer emulsion are cooperatively used, and then a certain amount of 2-hydroxyethylamine is added, so that the prepared water-based ink has excellent water resistance and wear resistance, and a printed matter can still keep a good printing effect in a humid or friction environment.

Description

Technical Field

[0001] The invention relates to the field of water-based ink preparation, and in particular to a novel water-based ink and a preparation method thereof. Background Art

[0002] Water-based ink is a type of ink that uses water as the main solvent. It is made of water-based polymer resins and emulsions, organic pigments, water and related additives through physical and chemical processes. With the improvement of environmental awareness and the strengthening of regulatory standards, water-based ink has gradually become an important development direction for the printing industry due to its environmental characteristics. Water-based ink does not emit volatile organic compounds during the printing process, which can significantly improve the safety of the working environment and protect the health of operators. At the same time, it can reduce the residual organic solvents in printed products and reduce energy consumption. Therefore, the market demand for water-based ink shows a growth trend, which is mainly driven by factors such as the improvement of environmental awareness, the impact of regulatory standards, the development of the printing industry and technological progress.

[0003] However, traditional water-based inks still have deficiencies in dispersibility, water resistance, abrasion resistance and glossiness, which affects the quality and performance of printed products. Therefore, it is of great significance to develop a new type of water-based ink with better performance. Summary of the invention

[0004] In view of the above existing technical problems, a new water-based ink and a preparation method thereof are provided. The water-based ink prepared by the method has good dispersibility, water resistance, alcohol resistance, initial drying, fineness and glossiness.

[0005] The present invention discloses a novel water-based ink, comprising the following components in parts by weight:

[0006] 35-40 parts of epoxy resin modified polyurethane emulsion; 18-23 parts of acrylate polymer emulsion; 5-8 parts of 2-hydroxyethylamine; 10-11 parts of pigment; 2-3 parts of dispersant; 3.5-4.5 parts of defoamer; 4-5 parts of leveling agent; 10-12 parts of wetting agent; 8-12 parts of tackifier.

[0007] The invention also discloses a method for preparing a novel water-based ink, comprising the following steps:

[0008] S1 Preparation of base ink: Deionized water, pigment, dispersant, one third of the weight of defoamer and one third of the weight of wetting agent are added to a high-speed stirrer in sequence, and after being stirred evenly, a mixture is obtained, and the mixture is added to a grinding disperser, and then yttrium-stabilized zirconia beads are added for grinding, and after the grinding is completed, a base ink is obtained;

[0009] S2 Preparation of new water-based ink: The base ink obtained in step S1 is mixed with epoxy resin modified polyurethane emulsion, acrylate polymer emulsion, 2-hydroxyethylamine, two-thirds by weight of defoamer, leveling agent, two-thirds by weight of wetting agent, tackifier and solvent in a reactor in sequence, and the reactor is placed on a magnetic stirrer for stirring to mix the components evenly to obtain a new water-based ink.

[0010] Preferably, in the S1-based ink preparation step, the speed of the high-speed stirrer is 1000-1500 rpm.

[0011] Preferably, in the S1-based ink preparation step, the stirring time of the high-speed stirrer is 20 to 40 minutes.

[0012] Preferably, in the S1-based ink preparation step, the density of the yttrium-stabilized zirconia beads is 5.3-6.0 g / cm3.

[0013] Preferably, in the S1-based ink preparation step, the mass ratio of the mixture to the yttrium-stabilized zirconia beads is 1:(0.8-1.3).

[0014] Preferably, in the S1 base ink preparation step, the grinding time of the grinding disperser is 1.8 to 2.3 hours.

[0015] Preferably, in step S2 of preparing the novel aqueous ink, the solvent is composed of deionized water and ethanol, and the volume ratio of deionized water to ethanol is 1:(0.5-1.0).

[0016] Preferably, in step S2 of preparing the novel aqueous ink, the mass ratio of the solvent to the base ink is 1:(1.5-2).

[0017] Preferably, in step S2 of preparing the novel aqueous ink, the stirring rate of the magnetic stirrer is 500 to 800 rpm; and the stirring time is 1 to 1.5 h.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The invention provides a novel water-based ink and a preparation method thereof. The types and amounts of dispersants are optimized and a high-speed grinding and dispersing process is adopted to uniformly disperse pigment particles in a resin, thereby improving the dispersibility of the ink. The epoxy resin-modified polyurethane emulsion and the acrylate polymer emulsion are used in combination, and a certain amount of 2-hydroxyethylamine is added thereto, thereby solving the problem of high viscosity of the pre-chain extension prepolymer, appropriately increasing the relative molecular weights of the epoxy resin-modified polyurethane emulsion and the acrylate polymer emulsion, and improving the mechanical properties of the epoxy resin-modified polyurethane emulsion and the acrylate polymer emulsion; the regularity and flexibility of the epoxy resin-modified polyurethane and the acrylate polymer are also improved, thereby providing the emulsion with excellent stability, dispersibility, mechanical properties and optical properties; and the ink is endowed with excellent water resistance and abrasion resistance, so that the printed matter can still maintain a good printing effect in a humid or friction environment.

[0020] The ink formula of the present invention adds a proper amount of leveling agent and wetting agent, which helps the ink to form a smooth and uniform ink film during the printing process, thereby improving the glossiness of the printed product. The ink of the present invention adopts an aqueous solvent system, does not contain harmful heavy metal elements, meets environmental protection requirements, and has no harmful substances discharged during the preparation process, and has high safety. DETAILED DESCRIPTION

[0021] The following examples are provided for a better understanding of the present invention, but are not intended to limit the best mode of implementation, nor to limit the content and protection scope of the present invention. Any product identical or similar to the present invention obtained by anyone under the inspiration of the present invention or by combining the features of the present invention with other prior arts shall fall within the protection scope of the present invention.

[0022] If no specific experimental steps or conditions are specified in the examples, the conventional experimental steps or conditions described in the literature in the field can be used. If no manufacturer is specified for the reagents or instruments used, they are all conventional reagent products that can be obtained commercially.

[0023] Embodiment 1: A novel water-based ink, comprising the following components in parts by weight:

[0024] 35 parts of epoxy resin modified polyurethane emulsion; 18 parts of acrylate polymer emulsion; 5 parts of 2-hydroxyethylamine; 10 parts of pigment; 2 parts of dispersant; 3.5 parts of defoamer; 4 parts of leveling agent; 10 parts of wetting agent; 8 parts of tackifier.

[0025] A method for preparing a novel water-based ink comprises the following steps:

[0026] Preparation of S1 base ink: deionized water, pigment, dispersant, one third of the weight of defoaming agent and one third of the weight of wetting agent are added to a high-speed agitator in sequence, and the stirring rate of the high-speed agitator is set to 1000rpm, and the stirring time is 20min. After stirring evenly, a mixture is obtained, and the mixture is added to a grinding disperser, and then yttrium-stabilized zirconia beads with a density of 5.3g / cm3 are added for grinding. The mass ratio of the mixture to the yttrium-stabilized zirconia beads is 1:0.8. The grinding time of the grinding disperser is set to 1.8h. After the grinding is completed, the base ink is obtained.

[0027] S2 Preparation of new water-based ink: The base ink obtained in step S1 is mixed with epoxy resin modified polyurethane emulsion, acrylate polymer emulsion, 2-hydroxyethylamine, two-thirds by weight of a defoamer, a leveling agent, two-thirds by weight of a wetting agent, a tackifier and a solvent in a reactor in sequence, wherein the solvent is composed of deionized water and ethanol in a volume ratio of 1:0.5, and the mass ratio of the solvent to the base ink is 1:1.5. The reactor is placed on a magnetic stirrer for stirring, and the speed of the magnetic stirrer is set to 500 rpm, and the time of the magnetic stirrer is 1 hour to mix the components evenly to obtain a new water-based ink.

[0028] Embodiment 2: A novel water-based ink, comprising the following components in parts by weight:

[0029] 36 parts of epoxy resin modified polyurethane emulsion; 19 parts of acrylate polymer emulsion; 5.5 parts of 2-hydroxyethylamine; 10.2 parts of pigment; 2.2 parts of dispersant; 3.7 parts of defoamer; 4.2 parts of leveling agent; 10.4 parts of wetting agent; 8.5 parts of tackifier.

[0030] A method for preparing a novel water-based ink comprises the following steps:

[0031] Preparation of S1 base ink: deionized water, pigment, dispersant, one third of the weight of defoaming agent and one third of the weight of wetting agent are added to a high-speed agitator in sequence, and the stirring rate of the high-speed agitator is set to 1100rpm, and the stirring time is 25min. After stirring evenly, a mixture is obtained, and the mixture is added to a grinding disperser, and yttrium-stabilized zirconia beads with a density of 5.5g / cm3 are added for grinding. The mass ratio of the mixture to the yttrium-stabilized zirconia beads is 1:0.9. The grinding time of the grinding disperser is set to 1.9h. After the grinding is completed, the base ink is obtained.

[0032] S2 Preparation of new water-based ink: The base ink obtained in step S1 is mixed with epoxy resin modified polyurethane emulsion, acrylate polymer emulsion, 2-hydroxyethylamine, two-thirds by weight of a defoamer, a leveling agent, two-thirds by weight of a wetting agent, a tackifier and a solvent in a reactor in sequence, wherein the solvent is composed of deionized water and ethanol in a volume ratio of 1:0.6, and the mass ratio of the solvent to the base ink is 1:1.6. The reactor is placed on a magnetic stirrer for stirring, and the speed of the magnetic stirrer is set to 550 rpm, and the time of the magnetic stirrer is 1.1 h, so that the components are evenly mixed to obtain a new water-based ink.

[0033] Embodiment 3: A novel water-based ink, comprising the following components in parts by weight:

[0034] 37 parts of epoxy resin modified polyurethane emulsion; 20 parts of acrylate polymer emulsion; 6 parts of 2-hydroxyethylamine; 10.4 parts of pigment; 2.4 parts of dispersant; 3.9 parts of defoamer; 4.4 parts of leveling agent; 10.8 parts of wetting agent; 9 parts of tackifier.

[0035] A method for preparing a novel water-based ink comprises the following steps:

[0036] Preparation of S1 base ink: deionized water, pigment, dispersant, one third part by weight of defoaming agent and one third part by weight of wetting agent are added into a high-speed agitator in sequence, and the stirring rate of the high-speed agitator is set to 1200rpm, and the stirring time is 30min. After stirring evenly, a mixture is obtained, and the mixture is added into a grinding disperser, and yttrium-stabilized zirconia beads with a density of 5.6g / cm3 are added for grinding. The mass ratio of the mixture to the yttrium-stabilized zirconia beads is 1:1. The grinding time of the grinding disperser is set to 2h. After the grinding is completed, the base ink is obtained.

[0037] S2 Preparation of new water-based ink: The base ink obtained in step S1 is mixed with epoxy resin modified polyurethane emulsion, acrylate polymer emulsion, 2-hydroxyethylamine, two-thirds by weight of a defoamer, a leveling agent, two-thirds by weight of a wetting agent, a tackifier and a solvent in a reactor in sequence, wherein the solvent is composed of deionized water and ethanol in a volume ratio of 1:0.7, and the mass ratio of the solvent to the base ink is 1:1.7. The reactor is placed on a magnetic stirrer for stirring, and the speed of the magnetic stirrer is set to 600 rpm, and the time of the magnetic stirrer is 1.2 h, so that the components are evenly mixed to obtain a new water-based ink.

[0038] Embodiment 4: A novel water-based ink, comprising the following components in parts by weight:

[0039] 38 parts of epoxy resin modified polyurethane emulsion; 21 parts of acrylate polymer emulsion; 6.5 parts of 2-hydroxyethylamine; 10.6 parts of pigment; 2.6 parts of dispersant; 4.1 parts of defoamer; 4.6 parts of leveling agent; 11 parts of wetting agent; and 9.5 parts of tackifier.

[0040] A method for preparing a novel water-based ink comprises the following steps:

[0041] Preparation of S1 base ink: deionized water, pigment, dispersant, one third part by weight of defoaming agent and one third part by weight of wetting agent are added to a high-speed agitator in sequence, and the stirring rate of the high-speed agitator is set to 1300rpm, and the stirring time is 35min. After stirring evenly, a mixture is obtained, and the mixture is added to a grinding disperser, and yttrium-stabilized zirconia beads with a density of 5.7g / cm3 are added for grinding. The mass ratio of the mixture to the yttrium-stabilized zirconia beads is 1:1.1. The grinding time of the grinding disperser is set to 2.1h. After the grinding is completed, the base ink is obtained.

[0042] S2 Preparation of new water-based ink: The base ink obtained in step S1 is mixed with epoxy resin modified polyurethane emulsion, acrylate polymer emulsion, 2-hydroxyethylamine, two-thirds by weight of a defoamer, a leveling agent, two-thirds by weight of a wetting agent, a tackifier and a solvent in a reactor in sequence, wherein the solvent is composed of deionized water and ethanol in a volume ratio of 1:0.8, and the mass ratio of the solvent to the base ink is 1:1.8. The reactor is placed on a magnetic stirrer for stirring, and the speed of the magnetic stirrer is set to 650 rpm. The time of the magnetic stirrer is 1.3 h, so that the components are evenly mixed to obtain a new water-based ink.

[0043] Embodiment 5: A novel water-based ink, comprising the following components in parts by weight:

[0044] 39 parts of epoxy resin modified polyurethane emulsion; 22 parts of acrylate polymer emulsion; 7 parts of 2-hydroxyethylamine; 10.8 parts of pigment; 2.8 parts of dispersant; 4.3 parts of defoamer; 4.8 parts of leveling agent; 11.5 parts of wetting agent; and 11 parts of tackifier.

[0045] A method for preparing a novel water-based ink comprises the following steps:

[0046] Preparation of S1 base ink: deionized water, pigment, dispersant, one third of the weight of defoaming agent and one third of the weight of wetting agent are added to a high-speed agitator in sequence, and the stirring rate of the high-speed agitator is set to 1400rpm, and the stirring time is 40min. After stirring evenly, a mixture is obtained, and the mixture is added to a grinding disperser, and yttrium-stabilized zirconia beads with a density of 5.9g / cm3 are added for grinding. The mass ratio of the mixture to the yttrium-stabilized zirconia beads is 1:1.2. The grinding time of the grinding disperser is set to 2.2h. After the grinding is completed, the base ink is obtained.

[0047] S2 Preparation of new water-based ink: The base ink obtained in step S1 is mixed with epoxy resin modified polyurethane emulsion, acrylate polymer emulsion, 2-hydroxyethylamine, two-thirds by weight of a defoamer, a leveling agent, two-thirds by weight of a wetting agent, a tackifier and a solvent in a reactor in sequence, wherein the solvent is composed of deionized water and ethanol in a volume ratio of 1:0.9, and the mass ratio of the solvent to the base ink is 1:1.9. The reactor is placed on a magnetic stirrer for stirring, and the speed of the magnetic stirrer is set to 700 rpm, and the time of the magnetic stirrer is 1.4 hours, so that the components are evenly mixed to obtain a new water-based ink.

[0048] Embodiment 6: A novel water-based ink, comprising the following components in parts by weight:

[0049] 40 parts of epoxy resin modified polyurethane emulsion; 23 parts of acrylate polymer emulsion; 8 parts of 2-hydroxyethylamine; 11 parts of pigment; 3 parts of dispersant; 4.5 parts of defoamer; 5 parts of leveling agent; 12 parts of wetting agent; and 12 parts of tackifier.

[0050] A method for preparing a novel water-based ink comprises the following steps:

[0051] Preparation of S1 base ink: deionized water, pigment, dispersant, one third of the weight of defoaming agent and one third of the weight of wetting agent are added to a high-speed agitator in sequence, and the stirring rate of the high-speed agitator is set to 1500rpm, and the stirring time is 40min. After stirring evenly, a mixture is obtained, and the mixture is added to a grinding disperser, and then yttrium-stabilized zirconia beads with a density of 6g / cm3 are added for grinding. The mass ratio of the mixture to the yttrium-stabilized zirconia beads is 1:1.3. The grinding time of the grinding disperser is set to 2.3h. After the grinding is completed, the base ink is obtained.

[0052] S2 Preparation of new water-based ink: The base ink obtained in step S1 is mixed with epoxy resin modified polyurethane emulsion, acrylate polymer emulsion, 2-hydroxyethylamine, two-thirds by weight of a defoamer, a leveling agent, two-thirds by weight of a wetting agent, a tackifier and a solvent in a reactor in sequence, wherein the solvent is composed of deionized water and ethanol in a volume ratio of 1:1, and the mass ratio of the solvent to the base ink is 1:2. The reactor is placed on a magnetic stirrer for stirring, and the speed of the magnetic stirrer is set to 800 rpm, and the time of the magnetic stirrer is 1.5 hours, so that the components are evenly mixed to obtain a new water-based ink.

[0053] Comparative Example 1: A novel water-based ink, comprising the following components in parts by weight:

[0054] 38 parts of epoxy resin modified polyurethane emulsion; 21 parts of acrylate polymer emulsion; 10.6 parts of pigment; 2.6 parts of dispersant; 4.1 parts of defoamer; 4.6 parts of leveling agent; 11 parts of wetting agent; 9.5 parts of tackifier.

[0055] The preparation method of a novel water-based ink is the same as that of Example 4.

[0056] Comparative Example 2: A novel water-based ink, comprising the following components in parts by weight:

[0057] 21 parts of acrylic polymer emulsion; 6.5 parts of 2-hydroxyethylamine; 10.6 parts of pigment; 2.6 parts of dispersant; 4.1 parts of defoamer; 4.6 parts of leveling agent; 11 parts of wetting agent; and 9.5 parts of tackifier.

[0058] The preparation method of a novel water-based ink is the same as that of Example 4.

[0059] Comparative Example 3: A novel water-based ink, comprising the following components in parts by weight:

[0060] 38 parts of epoxy resin modified polyurethane emulsion; 6.5 parts of 2-hydroxyethylamine; 10.6 parts of pigment; 2.6 parts of dispersant; 4.1 parts of defoamer; 4.6 parts of leveling agent; 11 parts of wetting agent; and 9.5 parts of tackifier.

[0061] The preparation method of a novel water-based ink is the same as that of Example 4.

[0062] Comparative Example 4: A novel water-based ink, comprising the following components in parts by weight:

[0063] 38 parts of epoxy resin modified polyurethane emulsion; 21 parts of acrylate polymer emulsion; 6.5 parts of 2-hydroxyethylamine; 10.6 parts of pigment; 2.6 parts of dispersant; 4.1 parts of defoamer; 4.6 parts of leveling agent; 11 parts of wetting agent; and 9.5 parts of tackifier.

[0064] A method for preparing a novel water-based ink comprises the following steps:

[0065] Preparation of S1 base ink: deionized water, pigment, dispersant, one third by weight of defoamer and one third by weight of wetting agent are added to a high-speed stirrer in sequence. The stirring rate of the high-speed stirrer is set to 1300 rpm and the stirring time is 35 min. After stirring evenly, a mixture is obtained.

[0066] S2 Preparation of new water-based ink: The mixture obtained in step S1 is mixed with epoxy resin modified polyurethane emulsion, acrylate polymer emulsion, 2-hydroxyethylamine, two-thirds by weight of a defoamer, a leveling agent, two-thirds by weight of a wetting agent, a tackifier and a solvent in a reactor in sequence, wherein the solvent is composed of deionized water and ethanol in a volume ratio of 1:0.8, and the mass ratio of the solvent to the mixture is 1:1.8. The reactor is placed on a magnetic stirrer for stirring, and the speed of the magnetic stirrer is set to 650 rpm, and the time of the magnetic stirrer is 1.3 h, so that the components are evenly mixed to obtain a new water-based ink.

[0067] The properties of the finished products of the new water-based inks prepared in Examples 1 to 6 and Comparative Examples 1 to 4 were tested, and the test results are shown in the following table:

[0068]

[0069] As can be seen from the above table, the adhesion, water resistance and purity resistance of the new water-based ink prepared in Examples 1 to 6 all meet the national standards; the fineness is inversely proportional to the glossiness, the smaller the fineness, the greater the glossiness; the fineness is proportional to the initial drying property, the smaller the fineness, the smaller the initial drying property, and the water-based ink is easier to dry and form a film. Among them, the properties of the new water-based ink prepared in Example 4 are the best, and the parameters of this preparation method are the best.

[0070] Comparative Example 1 is an aqueous ink prepared without adding 2-hydroxyethylamine to the raw materials; Comparative Example 2 is an aqueous ink prepared without adding epoxy resin modified polyurethane emulsion to the raw materials; Comparative Example 3 is an aqueous ink prepared without adding acrylate polymer emulsion to the raw materials; compared with adhesion, water resistance and purity resistance are all lower than those of Example 4, because the epoxy resin modified polyurethane emulsion and the acrylate polymer emulsion are used in combination, and 2-hydroxyethylamine is added therein, which can solve the problem of high viscosity of the pre-chain extension prepolymer, appropriately increase the relative molecular weight of the epoxy resin modified polyurethane emulsion and the acrylate polymer emulsion, and improve the mechanical properties of the epoxy resin modified polyurethane emulsion and the acrylate polymer emulsion; it can also improve the regularity and flexibility of the epoxy resin modified polyurethane and the acrylate polymer, providing the emulsion with excellent stability, dispersibility, mechanical properties and optical properties; and giving the ink excellent water resistance and wear resistance, so that the printed matter can still maintain a good printing effect in a humid or friction environment.

[0071] Comparative Example 4 is a method in which the grinding step in the preparation process of the S1 base ink is eliminated, and the mixture is directly stirred and mixed without grinding, and the S2 novel water-based ink preparation step is directly performed to obtain a water-based ink. The adhesion, water resistance, purity resistance, initial drying, fineness, and glossiness of this water-based ink product are all worse than those in Example 4. This is because the high-speed grinding and dispersion process can make the pigment particles evenly dispersed in the resin, improve the dispersibility of the ink, and can also reduce the fineness of the water-based ink product.

[0072] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention.

Claims

1. A novel water-based ink, characterized in that: It is composed of the following ingredients in parts by weight: 35-40 parts of epoxy resin modified polyurethane emulsion; 18-23 parts of acrylate polymer emulsion; 5-8 parts of 2-hydroxyethylamine; 10-11 parts of pigment; 2-3 parts of dispersant; 3.5-4.5 parts of defoamer; 4-5 parts of leveling agent; 10-12 parts of wetting agent; 8-12 parts of tackifier.

2. A method for preparing a novel water-based ink, characterized in that: The method comprises the following preparation steps: S1 Preparation of base ink: Deionized water, pigment, dispersant, one third of the weight of defoamer and one third of the weight of wetting agent are added to a high-speed stirrer in sequence, and after being stirred evenly, a mixture is obtained, and the mixture is added to a grinding disperser, and then yttrium-stabilized zirconia beads are added for grinding, and after the grinding is completed, a base ink is obtained; S2 Preparation of new water-based ink: The base ink obtained in step S1 is mixed with epoxy resin modified polyurethane emulsion, acrylate polymer emulsion, 2-hydroxyethylamine, two-thirds by weight of defoamer, leveling agent, two-thirds by weight of wetting agent, tackifier and solvent in a reactor in sequence, and the reactor is placed on a magnetic stirrer for stirring to mix the components evenly to obtain a new water-based ink.

3. The method for preparing a novel water-based ink according to claim 2, characterized in that: In the S1 base ink preparation step, the speed of the high-speed stirrer is 1000-1500 rpm.

4. The method for preparing a novel water-based ink according to claim 2, characterized in that: In the step of preparing the base ink S1, the stirring time of the high-speed stirrer is 20 to 40 minutes.

5. The method for preparing a novel water-based ink according to claim 2, characterized in that: In the S1-based ink preparation step, the density of the yttrium-stabilized zirconia beads is 5.3-6.0 g / cm3.

6. The method for preparing a novel water-based ink according to claim 2, characterized in that: In the S1-based ink preparation step, the mass ratio of the mixture to the yttrium-stabilized zirconia beads is 1:(0.8-1.3).

7. The method for preparing a novel water-based ink according to claim 2, characterized in that: In the S1 base ink preparation step, the grinding time of the grinding disperser is 1.8 to 2.3 hours.

8. The method for preparing a novel water-based ink according to claim 2, characterized in that: In the S2 novel water-based ink preparation step, the solvent is composed of deionized water and ethanol, and the volume ratio of deionized water to ethanol is 1: (0.5-1.0).

9. The method for preparing a novel water-based ink according to claim 2, characterized in that: In the S2 novel water-based ink preparation step, the mass ratio of the solvent to the base ink is 1:(1.5-2).

10. The method for preparing a novel water-based ink according to claim 2, characterized in that: In the step S2 of preparing the novel water-based ink, the stirring rate of the magnetic stirrer is 500 to 800 rpm; and the stirring time is 1 to 1.5 hours.

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