Ceramic inkjet printing decal paper and preparation method thereof, decal ceramic product

Abstract

The present invention belongs to the technical field of ceramic decorative decals, and discloses a ceramic inkjet printing decal and a preparation method thereof, and a decal ceramic product. The ceramic inkjet printing decal comprises, from bottom to top, a base paper, a water-soluble adhesive layer, an ink absorption layer, an ink layer, and a cover oil layer; wherein: the ink absorption layer is coated with an absorption slurry, can quickly fix and absorb ink, prevent ink gelatinization, ensure the clarity of the decal pattern, and is suitable for high-speed inkjet printing; the water-soluble adhesive layer can be quickly peeled off from the base paper during water transfer, and acts as a second barrier to isolate the ink layer from the base paper, which can prevent ink from seeping and further improve the clarity of the pattern. The ink absorption layer is mainly prepared with a copolymer monomer containing both a hard monomer and a soft monomer as the main raw material. The soft monomer and the hard monomer generate a viscous ink absorption layer through copolymerization, which can quickly absorb ink, overcome the interaction force between ink droplets, prevent ink droplets from flowing, and ensure the clarity of the pattern.

Description

Technical Field

[0001] The invention belongs to the technical field of ceramic decorative decals, and in particular relates to a ceramic inkjet printing decal and a preparation method thereof, and a decal ceramic product. Background Art

[0002] The existing water transfer printing process widely used in ceramic decoration mainly consists of the following steps: green body - glaze firing - decals - air drying - baking - finished product. The decal paper used in the production process is mainly composed of base paper, pattern layer and cover layer. The printing process is to first use screen printing to print ceramic ink on the base paper to form a pattern; wait for the pattern to dry and then use a screen brush to apply a layer of glue to form a cover layer; after the cover layer is dry, the pattern can be attached to the cover layer, and the pattern is transferred to the surface of the ceramic by transfer method.

[0003] In the prior art, the ink pattern layer in ceramic decals is usually in direct contact with the base paper, which easily causes problems such as unclear patterns, gelatinization, and low yields. Some ceramic decals absorb ink through an ink absorption layer or an additive layer, but most of them have complex production processes, and the ink easily gelats and diffuses during the penetration process. It is also difficult to separate the base paper from the pattern layer, which not only affects production efficiency, but is also prone to slippage or misalignment, making it impossible to ensure the integrity of the pattern.

[0004] Therefore, there is an urgent need to develop a ceramic flower paper so that its pattern layer and base paper can be quickly separated, and the pattern is clear, complete, and not mushy. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the above-mentioned prior art. To this end, the present invention proposes a ceramic inkjet printing decal paper and a preparation method thereof, and a decal ceramic product. The decal paper sets a specific layer structure, and at the same time selects and controls the type and ratio of raw materials between each layer so that they interact with each other, thereby jointly solving the problem that the decal paper pattern is fuzzy, unclear, incomplete, and the base paper is not easy to separate.

[0006] In order to solve the above technical problems, the first aspect of the present invention provides a ceramic inkjet printing flower paper, which includes, from bottom to top, a base paper, a water-soluble glue layer, an ink absorption layer, an ink layer and a cover oil layer; the ink absorption layer is formed by coating an absorption slurry, and the raw materials for preparing the absorption slurry include comonomers, and the comonomers include hard monomers and soft monomers.

[0007] Specifically, the present invention sets a water-soluble adhesive layer and an ink absorption layer between the base paper and the ink layer, wherein: the ink absorption layer is mainly used to fix and quickly absorb the ink of the ink layer to prevent the ink from being gelatinized due to diffusion; at the same time, the ink absorption layer can also isolate the ink layer from the water-soluble adhesive layer to prevent the pattern from being gelatinized due to the ink seepage, thereby ensuring the clarity of the pattern on the flower paper. When the flower paper is water-transferred, the water-soluble adhesive layer can be quickly separated from the base paper, and at the same time, the water-soluble adhesive layer is also a second barrier to isolate the ink absorption layer from the base paper, which can prevent the ink from seeping and further improve the clarity of the pattern. In addition, a cover oil layer is set above the ink layer to effectively fix and protect the ink layer.

[0008] At the same time, the ink adsorption layer of the present invention is a coating with a certain viscosity prepared with comonomer as the main raw material, which can form a strong adhesive force under the action of ink gravity alone. Among them: the comonomer includes soft monomers and hard monomers. The soft monomer has a lower glass transition temperature and mainly plays an adhesion role, so that the ink adsorption layer has sufficiently high wettability and adhesion; the hard monomer refers to a monomer with a higher homopolymer glass transition temperature and can copolymerize with the soft monomer. The addition of the hard monomer mainly increases the rigidity of the polymer molecular chain, so that the coating has a higher cohesive strength. The combined action of the soft monomer and the hard monomer ensures the adsorption and fixation of the ink by the ink adsorption layer, which can effectively prevent the pattern from becoming gelatinized.

[0009] As a further improvement of the above scheme, the mass ratio of the soft monomer to the hard monomer is (6-7):(3-4); the hard monomer is selected from at least one of methyl methacrylate, styrene, and acrylonitrile; and the soft monomer is selected from at least one of methyl acrylate, ethyl acrylate, and butyl acrylate.

[0010] Specifically, soft monomers such as methyl acrylate, ethyl acrylate, and butyl acrylate are all long-chain alkyl polyacrylates. The steric hindrance effect of their long side-chain alkyl groups weakens the interaction between the main chains of the polymers, forming an internal plasticizing effect, which can reduce their glass transition temperature to a certain extent, thereby having better adhesion.

[0011] A certain amount of specific hard monomers, such as methyl methacrylate, styrene, and acrylonitrile, are added to the above-mentioned soft monomers. The soft monomers and the hard monomers form a viscous ink absorption layer through copolymerization, which can quickly absorb ink, overcome the interaction force between ink droplets, prevent the ink droplets from flowing, and make the pattern clearer.

[0012] As a further improvement of the above scheme, the raw materials for preparing the adsorption slurry also include an emulsifier, an initiator and water; the raw materials for preparing the adsorption slurry include, by weight: 45-55 parts of comonomer, 3-5 parts of emulsifier, 0.7-0.8 parts of initiator, and 40-60 parts of water.

[0013] Specifically, emulsifiers can reduce the interfacial free energy of ink and make the ink form a stable interfacial film. Therefore, during the evaporation of the solvent in the ink, the ink droplets in Brownian motion are not easy to agglomerate. At the same time, the ink can be kept evenly attached to the ink adsorption layer, avoiding cracks caused by uneven ink thickness during the later baking process.

[0014] Preferably, the emulsifier is selected from TX-10.

[0015] Preferably, the initiator is selected from at least one of persulfate, hydrogen peroxide and water-soluble azo initiator.

[0016] Preferably, the water is deionized water.

[0017] As a further improvement of the above scheme, the preparation method of the adsorption slurry includes the following steps: first, dissolve the emulsifier in water and heat it to 70-80°C; then drop a portion of the initiator and comonomer therein for 50-70 minutes, and heat to 85-90°C after the drop is completed; then drop the remaining initiator and comonomer for 3-5 hours, keep warm for 30-60 minutes after the drop is completed, and after cooling, adjust the pH value to neutral to obtain the product.

[0018] Specifically, the reaction rate of the polymerization reaction is related to the concentration of the initiator and the comonomer. When the amount of the initiator is large, the polymerization rate will increase, the degree of polymerization of the product will be reduced, and gel will be easily generated during the reaction process, affecting the quality of the ink adsorption layer. When preparing the adsorption slurry of the ink adsorption layer, the initiator and the comonomer are slowly added dropwise twice, so that the reaction rate is more stable, and the generation of gel during the reaction can be reduced or even avoided, thereby improving the uniformity and stability of the ink adsorption layer, which is more conducive to improving the clarity of the pattern.

[0019] Preferably, the mass ratio of the comonomers added successively is 1:(3-5).

[0020] As a further improvement of the above solution, the ink layer is formed by inkjet printing of quick-drying ceramic ink; the solvent used in the quick-drying ceramic ink is an alcohol ether solvent with a boiling point between 140-210°C.

[0021] Specifically, the present invention selects a quick-drying ceramic inkjet printing ink layer using alcohol ether raw materials with a boiling point between 140-210° C. as solvent. After high-speed printing, the solvent can evaporate quickly, thereby reducing the effect of the solvent on the gelatinization of the ink.

[0022] Preferably, the solvent is selected from at least one of diethylene glycol diethyl ether, ethylene glycol, and 1,2-propylene glycol.

[0023] As a further improvement of the above scheme, the water-soluble glue layer is formed by coating a water-soluble glue, and the water-soluble glue includes at least one of gelatin, gum arabic, polyvinyl pyrrolidone, dextrin, and starch.

[0024] Preferably, the cover oil layer is formed by spraying cover oil, and the cover oil can be ordinary cover oil specially used for ceramic decal paper.

[0025] Preferably, the base paper is wood-free paper, which has good water absorption and will not shrink or wrinkle when exposed to water. Its thickness is 120-150g / m 2 .

[0026] The second aspect of the present invention provides a method for preparing ceramic inkjet printing decal paper, the method for preparing the ceramic inkjet printing decal paper according to the first aspect of the present invention, comprising the following steps:

[0027] Firstly, water-soluble glue and adsorption slurry are coated on base paper in sequence to form a water-soluble glue layer and an ink adsorption layer; then, ink is inkjet printed to form an ink layer; then, cover oil is sprayed to form a cover oil layer; and finally, drying is performed to obtain the ceramic inkjet printed flower paper.

[0028] Preferably, the thickness of the water-soluble adhesive layer and the ink absorption layer are both 5-15 μm.

[0029] Preferably, the drying temperature is 75-85° C. and the drying time is 10-15 minutes.

[0030] Preferably, the cover oil layer has a thickness of 20-30 μm. A cover oil layer of a certain thickness can maintain a certain strength during the transfer process (especially when flattening) to avoid cracking.

[0031] The third aspect of the present invention provides a decal ceramic product, comprising a ceramic substrate and a pattern decoration layer, wherein the pattern decoration layer is formed by baking the ceramic inkjet-printed decal paper according to the first aspect of the present invention.

[0032] The fourth aspect of the present invention provides a method for preparing a decal ceramic product, the method being used to prepare the decal ceramic product according to the third aspect of the present invention, comprising the following steps:

[0033] The ceramic inkjet printed decal paper is soaked in water to separate the base paper; the separated ceramic inkjet printed decal paper is then pasted on the surface of the ceramic base body, and the cover oil layer is removed after being scraped flat; and then the decal is baked to obtain the decal ceramic product.

[0034] Preferably, the baking temperature is 600-900° C. and the baking time is 4-7 hours.

[0035] Preferably, the soaking time is 3-6 minutes. The scraping refers to scraping away bubbles, wrinkles and water in the flower paper with a rubber scraper.

[0036] Compared with the prior art, the above technical solution of the present invention has at least the following technical effects or advantages:

[0037] (1) The ceramic decal paper of the present invention comprises, from bottom to top, a base paper, a water-soluble adhesive layer, an ink absorption layer, an ink layer and a cover oil layer, wherein: the ink absorption layer can quickly fix and absorb the ink, prevent the ink from gelatinizing, ensure the clarity of the decal paper pattern, and is suitable for high-speed inkjet printing; the water-soluble adhesive layer can be quickly peeled off from the base paper during water transfer printing, and acts as a second barrier to isolate the ink layer from the base paper, prevent the ink from seeping, and further improve the clarity of the pattern; the ink layer has a quick-drying property, which can reduce the impact on the gelatinization of the ink, and the interaction between the layers can effectively ensure the clarity and integrity of the decal paper pattern.

[0038] (2) The ink absorption layer of the present invention is mainly prepared with a copolymer monomer containing both a hard monomer and a soft monomer. The soft monomer and the hard monomer generate a viscous ink absorption layer through copolymerization reaction, which can quickly absorb ink, overcome the interaction force between ink droplets, prevent the flow of ink droplets, and ensure the clarity of the pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a diagram of a decal ceramic product obtained in Example 1;

[0040] Figure 2 This is an enlarged view of the decal ceramic product prepared in Example 1;

[0041] Figure 3 This is a diagram of a decal ceramic product obtained in Example 4;

[0042] Figure 4 This is an enlarged view of the decal ceramic product prepared in Example 4. DETAILED DESCRIPTION

[0043] The present invention is described in detail below in conjunction with the examples, so that the technical personnel of the relevant technical field can understand the present invention. It is necessary to point out here that the examples are only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. The non-essential improvements and adjustments made to the present invention by the skilled person in the relevant field according to the above invention content should still belong to the scope of protection of the present invention. At the same time, the raw materials mentioned below that are not described in detail are all commercially available products; the process steps or preparation methods that are not mentioned in detail are all process steps or preparation methods known to those skilled in the art.

[0044] The base paper used in the following examples and comparative examples is all woodfree paper, and the cover oil is KA3422 cover oil specially made for flower paper.

[0045] Example 1

[0046] A ceramic inkjet printing decal paper, which comprises, from bottom to top, a base paper, a water-soluble glue layer, an ink absorption layer, an ink layer and a cover oil layer. The raw materials for preparing the absorption slurry for coating the ink absorption layer include, by weight, 30 parts of methyl acrylate, 15 parts of methyl methacrylate, 3 parts of emulsifier TX-10, 0.7 parts of ammonium persulfate, and 55 parts of deionized water; the ink is an inkjet printing ceramic ink, and the solvent used in the ink is diethylene glycol diethyl ether; the water-soluble glue is gelatin.

[0047] The preparation method of the adsorption slurry comprises the following steps: first, according to the mass ratio of the present embodiment, 3 parts of emulsifier TX-10 are dissolved in deionized water and heated to 70°C; then, 7.5 parts of methyl acrylate, 3.75 parts of methyl methacrylate and 0.175 parts of ammonium persulfate are added dropwise for 50 minutes, and the temperature is raised to 85°C after the addition is completed; the remaining methyl acrylate, methyl methacrylate and ammonium persulfate are added dropwise for 3 hours, and the temperature is kept for 30 minutes after the addition is completed. After cooling, the pH value is adjusted to neutral to obtain the adsorption slurry.

[0048] A method for preparing ceramic inkjet printing decal paper comprises the following steps:

[0049] (1) Gelatin is dissolved in water (the mass volume ratio of gelatin to water is 1:3 g / mL), and stirred continuously to form a uniform gelatinous liquid, which is then coated on the base paper with a coating rod to a coating thickness of 5 μm to form a water-soluble gelatin layer;

[0050] (2) coating the prepared adsorption slurry on the water-soluble adhesive layer by a coating rod with a coating thickness of 5 μm to form an ink adsorption layer;

[0051] (3) inkjet printing ceramic ink on the ink absorption layer to form an ink layer;

[0052] (4) After the ink layer is dry, cover oil is sprayed on the surface and dried at 75° C. for 10 minutes to obtain the ceramic inkjet printed decal paper of this embodiment.

[0053] A decal ceramic product comprises a ceramic substrate and a pattern decoration layer, wherein the pattern decoration layer is formed by baking the ceramic inkjet printing decal paper prepared in this embodiment.

[0054] A method for preparing a decal ceramic product comprises the following steps:

[0055] The ceramic inkjet printed decal paper was soaked in water for 5 minutes to separate the base paper; the separated ceramic inkjet printed decal paper was then pasted on the surface of the ceramic base, and the cover oil layer was removed after being scraped flat, and the decal was baked at 820° C. for 4 hours to obtain the decal ceramic product of this embodiment.

[0056] Example 2

[0057] A ceramic inkjet printing decal paper, which comprises, from bottom to top, a base paper, a water-soluble glue layer, an ink absorption layer, an ink layer and a cover oil layer. The raw materials for preparing the absorption slurry for coating the ink absorption layer include, by weight, 35 parts of ethyl acrylate, 20 parts of styrene, 4 parts of emulsifier TX-10, 0.8 parts of ammonium persulfate, and 60 parts of deionized water; the ink is an inkjet printing ceramic ink, and the solvent used in the ink is ethylene glycol; the water-soluble glue is gum arabic.

[0058] The preparation method of the adsorption slurry comprises the following steps: first, according to the mass ratio of the present embodiment, 3 parts of emulsifier TX-10 are dissolved in deionized water and heated to 75°C; then, 7 parts of methyl acrylate, 8 parts of methyl methacrylate and 0.16 parts of ammonium persulfate are added dropwise for 60 minutes, and the temperature is raised to 85°C after the addition is completed; the remaining methyl acrylate, methyl methacrylate and ammonium persulfate are added dropwise for 4 hours, and the temperature is kept for 45 minutes after the addition is completed. After cooling, the pH value is adjusted to be neutral to obtain the adsorption slurry.

[0059] A method for preparing ceramic inkjet printing decal paper comprises the following steps:

[0060] (1) dissolving gum arabic in water (the mass volume ratio of gum to water is 1:4 g / mL), stirring continuously to form a uniform colloidal liquid, and coating it on the base paper with a coating rod to a coating thickness of 10 μm to form a water-soluble glue layer;

[0061] (2) coating the prepared adsorption slurry on the water-soluble adhesive layer by a coating rod, with a coating thickness of 10 μm, to form an ink adsorption layer;

[0062] (3) inkjet printing ceramic ink on the ink absorption layer to form an ink layer;

[0063] (4) After the ink layer is dried, cover oil is sprayed on the surface and dried at 80° C. for 10 minutes to obtain the ceramic inkjet printed decal paper of this embodiment.

[0064] A decal ceramic product comprises a ceramic substrate and a pattern decoration layer, wherein the pattern decoration layer is formed by baking the ceramic inkjet printing decal paper prepared in this embodiment.

[0065] A method for preparing a decal ceramic product comprises the following steps:

[0066] The ceramic inkjet printed decal paper was soaked in water for 5 minutes to separate the base paper; the separated ceramic inkjet printed decal paper was then pasted on the surface of the ceramic base, and the cover oil layer was removed after being scraped flat, and the decal was baked at 850° C. for 6 hours to obtain the decal ceramic product of this embodiment.

[0067] Example 3

[0068] A ceramic inkjet printing decal paper, which comprises, from bottom to top, a base paper, a water-soluble glue layer, an ink absorption layer, an ink layer and a cover oil layer. The raw materials for preparing the absorption slurry for coating the ink absorption layer include, by weight, 30 parts of butyl acrylate, 20 parts of acrylonitrile, 5 parts of emulsifier TX-10, 0.8 parts of ammonium persulfate, and 55 parts of deionized water; the ink is an inkjet printing ceramic ink, and the solvent used in the ink is 1,2-propylene glycol; the water-soluble glue is starch.

[0069] The preparation method of the adsorption slurry comprises the following steps: first, according to the mass ratio of the present embodiment, 3 parts of emulsifier TX-10 are dissolved in deionized water and heated to 80°C; then, 5 parts of methyl acrylate, 3.33 parts of methyl methacrylate and 0.13 parts of ammonium persulfate are added dropwise for 70 minutes, and the temperature is raised to 90°C after the addition is completed; the remaining methyl acrylate, methyl methacrylate and ammonium persulfate are added dropwise for 5 hours, and the temperature is kept for 60 minutes after the addition is completed. After cooling, the pH value is adjusted to be neutral to obtain the adsorption slurry.

[0070] A method for preparing ceramic inkjet printing decal paper comprises the following steps:

[0071] (1) dissolving starch in water (the mass volume ratio of glue to water is 1:3 g / mL), stirring continuously to form a uniform colloid liquid, and coating it on the base paper with a coating rod, with a coating thickness of 15 μm, to form a water-soluble glue layer;

[0072] (2) coating the prepared adsorption slurry on the water-soluble adhesive layer by a coating rod, with a coating thickness of 15 μm, to form an ink adsorption layer;

[0073] (3) inkjet printing ceramic ink on the ink absorption layer to form an ink layer;

[0074] (4) After the ink layer is dry, cover oil is sprayed on the surface and dried at 85° C. for 10 minutes to obtain the ceramic inkjet printed decal paper of this embodiment.

[0075] A decal ceramic product comprises a ceramic substrate and a pattern decoration layer, wherein the pattern decoration layer is formed by baking the ceramic inkjet printing decal paper prepared in this embodiment.

[0076] A method for preparing a decal ceramic product comprises the following steps:

[0077] The ceramic inkjet printed decal paper was soaked in water for 5 minutes to separate the base paper; the separated ceramic inkjet printed decal paper was then pasted on the surface of the ceramic substrate, and the cover oil layer was removed after being scraped flat, and the decal was baked at 900° C. for 7 hours to obtain the decal ceramic product of this embodiment.

[0078] Example 4

[0079] The difference between Example 4 and Example 1 is that the ink of Example 4 is a non-quick-drying inkjet printing ceramic ink, and the solvent used in the ink is ethylene glycol carbonate with a higher boiling point.

[0080] Example 5

[0081] The difference between Example 5 and Example 1 is that the ink of Example 5 is a quick-drying inkjet printing ceramic ink using a solvent with a lower boiling point, and the solvent used in the ink is butanol.

[0082] Comparative Example 1

[0083] The difference between Comparative Example 1 and Example 1 is that the raw material composition of the adsorption slurry of Comparative Example 1 contains only soft monomers, and the raw materials for preparing the adsorption slurry of Comparative Example 1 include, by weight: 45 parts of methyl acrylate, 3 parts of emulsifier TX-10, 0.7 parts of ammonium persulfate, and 55 parts of deionized water.

[0084] Comparative Example 2

[0085] The difference between Comparative Example 2 and Example 1 is that the raw material composition of the adsorption slurry of Comparative Example 2 contains only hard monomers, and the raw materials for preparing the adsorption slurry of Comparative Example 2 include, by weight: 45 parts of methyl methacrylate, 3 parts of emulsifier TX-10, 0.7 parts of ammonium persulfate, and 55 parts of deionized water.

[0086] Comparative Example 3

[0087] The difference between Comparative Example 3 and Example 1 is that the layer structure of the ceramic inkjet printing decal paper of Comparative Example 3 does not include a water-soluble glue layer, and the ceramic inkjet printing decal paper of Comparative Example 3 comprises base paper, ink absorption layer, ink layer and cover oil layer from bottom to top.

[0088] Performance Evaluation

[0089] The clarity of the decorative patterns of the ceramic decals prepared in Examples 1-5 and Comparative Examples 1-3 and the separation time of the base paper during water transfer printing were evaluated, as shown in Table 1.

[0090] Table 1: Comparison of the performance of ceramic inkjet printing decals of Examples 1-5 and Comparative Examples 1-3

[0091]

[0092]

[0093] As shown in Table 1, the decal ceramic products prepared in Examples 1-3 have clear and complete patterns, and the time for the base paper to separate during water transfer is short. Figure 1-2 The physical picture of the decal ceramic product obtained in Example 1 is Figure 1-2 It can be seen that the decal pattern is clear and complete, and there is no blurring phenomenon even when it is magnified.

[0094] Example 4: Due to the use of non-quick-drying ink, the solvent failed to evaporate in time, resulting in the gelatinization of the pattern. For details, see Figure 3 and Figure 4 .

[0095] In Example 5, due to the use of a quick-drying inkjet printing ceramic ink with a solvent having a lower boiling point, the pattern appears wire-drawing, which also leads to a decrease in clarity.

[0096] Comparative Example 1-2 uses a single soft monomer or a hard monomer. Although a decal with a clear and complete pattern can be produced, defects such as the pattern becoming mushy or the decal cracking occur during the water transfer printing process.

[0097] Since the layer structure of the flower paper in Comparative Example 3 does not contain a water-soluble adhesive layer, it is difficult to separate the base paper during water transfer. After transfer, part of the pattern falls off, making the pattern incomplete, and it takes longer to separate the base paper.

[0098] For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, without having to go through creative labor. Therefore, simple improvements made to the present invention by those skilled in the art based on the disclosure of the present invention should be within the protection scope of the present invention. The above embodiments are preferred embodiments of the present invention, and all processes similar to the present invention and equivalent changes made should belong to the protection scope of the present invention.

Claims

1. A ceramic inkjet printing decal paper, characterized in that: The invention comprises, from bottom to top, a base paper, a water-soluble adhesive layer, an ink absorption layer, an ink layer and a cover oil layer; the ink absorption layer is formed by coating an absorption slurry. The raw materials for preparing the adsorption slurry are calculated by weight: 45-55 parts of comonomer, 3-5 parts of emulsifier, 0.7-0.8 parts of initiator, and 40-60 parts of water; The comonomer includes a hard monomer and a soft monomer, and the mass ratio of the soft monomer to the hard monomer is (6-7): (3-4); The hard monomer is selected from at least one of methyl methacrylate, styrene and acrylonitrile; The soft monomer is selected from at least one of methyl acrylate, ethyl acrylate and butyl acrylate; The preparation method of the adsorption slurry comprises the following steps: firstly, dissolving an emulsifier in water and heating the mixture to 70-80° C.; then dropping a portion of the comonomer and the initiator for 50-70 minutes, and heating the mixture to 85-90° C.; then dropping the remaining comonomer and the initiator for 3-5 hours, and keeping the mixture warm for 30-60 minutes after the dropping, cooling the mixture, and adjusting the pH value to be neutral to obtain the adsorption slurry; The ink layer is formed by inkjet printing of quick-drying ceramic ink; the solvent used in the quick-drying ceramic ink is an alcohol ether solvent with a boiling point between 140-210°C.

2. The ceramic inkjet printing decal paper according to claim 1, characterized in that: The water-soluble adhesive layer is formed by coating a water-soluble adhesive, and the water-soluble adhesive includes at least one of gelatin, gum arabic, polyvinyl pyrrolidone, dextrin, and starch.

3. A method for preparing ceramic inkjet printing decal paper, characterized in that: The preparation method is used to prepare the ceramic inkjet printing paper according to claim 1 or 2, comprising the following steps: Firstly, water-soluble glue and adsorption slurry are coated on base paper in sequence to form a water-soluble glue layer and an ink adsorption layer; then, ink is inkjet printed to form an ink layer; then, cover oil is sprayed to form a cover oil layer; and finally, drying is performed to obtain the ceramic inkjet printed decal paper; The thickness of the water-soluble glue layer and the ink absorption layer are both 5-15 μm; the thickness of the cover oil layer is 20-30 μm.

4. The method for preparing ceramic inkjet printing decal paper according to claim 3, characterized in that: The drying temperature is 75-85° C. and the drying time is 10-15 minutes.

5. A decal ceramic product, characterized in that: The invention comprises a ceramic substrate and a pattern decoration layer, wherein the pattern decoration layer is formed by baking the ceramic inkjet printing flower paper as claimed in claim 1 or 2.

6. A method for preparing a decal ceramic product, characterized in that: The preparation method is used to prepare the decal ceramic product according to claim 5, comprising the following steps: The ceramic inkjet printed decal paper is soaked in water to separate the base paper; the separated ceramic inkjet printed decal paper is then pasted on the surface of the ceramic base body, and the cover oil layer is removed after being scraped flat; and then the decal is baked to obtain the decal ceramic product.

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