Ceramic ink with color-changing effect, color-changing texture brick and preparation method of ceramic ink

Abstract

The invention provides ceramic ink with a color-changing effect, a color-changing texture brick and a preparation method of the color-changing texture brick, and relates to the technical field of ceramic tiles. The ceramic ink with the color-changing effect is prepared by mixing a solvent and color-changing powder, the solvent is propylene; the color-changing powder comprises at least one of purple noctilucent powder, red noctilucent powder and green noctilucent powder. According to the ceramic ink, through the unique color changing and anti-fake effects, the decoration and attractiveness of ceramic tiles are improved, the anti-fake characteristic of products is enhanced, and an innovative solution is provided for the ceramic tile industry.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic tiles, and in particular to a ceramic ink with a color-changing effect, a color-changing textured tile and a preparation method thereof. Background Art

[0002] With the rapid economic development and the continuous improvement of people's living standards, the market demand for building decoration materials is growing, especially decorative ceramic tiles, which are widely popular due to their beauty and durability. In modern interior design, ceramic tiles are not only materials for floor and wall coverings, but also an important element for expressing design style and enhancing the beauty of space. Consumers, especially the younger generation, have put forward higher requirements for the decorative effects and personalized needs of ceramic tiles, which has promoted the technological innovation and product diversification of the ceramic tile industry.

[0003] In current traditional technologies, the decorative effect of tiles is mainly achieved through glaze treatment, pattern printing and the addition of special materials. Glaze treatment can increase the gloss and color saturation of tiles, pattern printing can achieve the replication of various complex patterns, and the addition of special materials such as metallic glaze and glitter glaze can give tiles special visual effects. In addition, some tile products can display different colors or patterns under specific light by using color-changing pigments or photochromic materials, thus providing a dynamic decorative effect.

[0004] However, the existing ceramic tiles have certain limitations in achieving the color-changing effect. First, the pattern effect of many color-changing ceramic tiles is not ideal, the pattern is blurred, lacks three-dimensionality and realism, which greatly limits its application in the high-end decoration market. Secondly, the durability of the color-changing effect is also a problem. After long-term use, the color-changing effect of some ceramic tiles will gradually weaken or disappear, affecting the service life and aesthetics of the product. In addition, the production cost of color-changing ceramic tiles is relatively high, which also limits its popularity in the market.

[0005] In summary, the color-changing tiles of the prior art have deficiencies in pattern clarity, effect durability, and cost control. The unsatisfactory pattern effect greatly reduces the decorativeness of the tiles, and the non-persistent effect affects the long-term beauty and use value of the product. At the same time, the high cost also restricts the competitiveness of color-changing tiles in the market. The existence of these problems not only affects consumers' satisfaction with tile products, but also limits the further development of the ceramic tile industry in the field of decoration. Therefore, it has become an urgent need for the development of the industry to develop new color-changing tiles and improve their decorative effects and market competitiveness.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] The first purpose of the present invention is to provide a ceramic ink with a color-changing effect, a color-changing textured brick and a preparation method thereof. The ceramic ink with a color-changing effect has the advantage of being able to display different colors under normal visible light and light of a specific wavelength.

[0008] In order to achieve the above-mentioned purpose of the present invention, the following technical solutions are particularly adopted:

[0009] In a first aspect, the present invention provides a ceramic ink with a color-changing effect, wherein the ceramic ink with a color-changing effect is prepared by mixing a solvent with a color-changing powder;

[0010] The solvent is propylene;

[0011] The color-changing powder includes at least one of purple luminous powder, red luminous powder and green luminous powder;

[0012] In an optional embodiment, the ratio of the solvent to the color-changing powder is (1-2):1.

[0013] In an optional embodiment, the purple luminous powder comprises the following components in parts by weight:

[0014] Calcium sulfide 40-60;

[0015] Iron oxide 2-4;

[0016] Magnesium sulfide 20-40;

[0017] Sodium sulfide 7-9;

[0018] Silver nitrate 2-4.

[0019] In an optional embodiment, the red luminous powder comprises the following components in parts by weight:

[0020] Barium sulfate 50-70;

[0021] Magnesium sulfate 20-40;

[0022] Lithium phosphate 3-5;

[0023] Copper nitrate 5-7.

[0024] In an optional embodiment, the green luminous powder comprises the following components in parts by weight:

[0025] Calcium sulfide 35-55;

[0026] Potassium sulfide 7-9;

[0027] Sodium sulfide 10-20;

[0028] Barium nitrate 12-14;

[0029] Indium nitrate 18-20.

[0030] In a second aspect, the present invention provides a method for preparing a ceramic ink having a color-changing effect as described in any one of the aforementioned embodiments, comprising:

[0031] Mixing the solvent with the color-changing powder to obtain a premixed raw material;

[0032] The premixed raw materials are sieved through a sieve to obtain the ceramic ink with color-changing effect;

[0033] Preferably, the mesh size of the sieve is not less than 1000 meshes.

[0034] In a third aspect, the present invention provides a method for preparing a color-changing textured brick, comprising:

[0035] Pre-processing the raw bricks to obtain target bricks;

[0036] Spraying a bottom glaze material on the surface of the target brick blank to form a bottom glaze layer, and spraying a top glaze material on the surface of the bottom glaze layer to form a glazed brick blank;

[0037] Splitting the target pattern into a basic pattern and a color-changing pattern; wherein the basic pattern and the color-changing pattern can form the target pattern by combining or superimposing;

[0038] Printing the basic pattern on the glazed brick blank to form a basic layer;

[0039] On the base layer, the color-changing pattern is printed using the ceramic ink with color-changing effect as described in any one of the aforementioned embodiments to form a color-changing pattern combined or superimposed with the base pattern in the base layer as a decorative brick blank, so as to form the target pattern on the surface of the decorative brick blank;

[0040] The decorative brick blank is sequentially subjected to glaze spraying treatment of protective glaze, firing treatment and polishing treatment to obtain the color-changing textured brick.

[0041] In an optional embodiment, the pre-processing includes:

[0042] After the raw bricks are pressed by a press, they are baked at 150° C. to 200° C. for 60 to 70 minutes; and the surfaces of the baked raw bricks are cleaned.

[0043] In an optional embodiment, the base glaze material includes the following components in parts by weight:

[0044] Burning soil 30-40;

[0045] Dolomite 10-20;

[0046] Alumina 15-25;

[0047] Wollastonite 25~35.

[0048] In an optional embodiment, the glaze material comprises the following components in parts by weight:

[0049] Sodium feldspar 20-30;

[0050] Calcite 10-15;

[0051] Kaolin 10-20;

[0052] Burnt talc 0-10;

[0053] Potassium feldspar 15-25;

[0054] Alumina 5-10;

[0055] Burning soil 10-20;

[0056] Barium carbonate 0~10.

[0057] In an optional embodiment, the firing treatment has a firing time of 55 minutes to 65 minutes and a firing temperature of 1600° C. to 1700° C.;

[0058] And / or, the polishing process comprises the following processing steps performed in sequence:

[0059] Abrasive brushes 80 mesh, no less than 6 sets;

[0060] Abrasive brushes 150 mesh, no less than 6 sets;

[0061] Sponge grinding blocks 400 mesh at least 5 groups;

[0062] There should be no less than 5 groups of 600-mesh sponge grinding blocks.

[0063] In a fourth aspect, the present invention provides a color-changing textured brick, which is prepared by the method for preparing a color-changing textured brick as described in any one of the aforementioned embodiments.

[0064] The ceramic ink with color-changing effect provided by the present invention has beneficial effects not only in terms of decoration, but also in terms of anti-counterfeiting function. These effects have significant advantages in terms of tile decoration and product protection:

[0065] (1) The ceramic ink of the present invention can increase the shadow effect of the tile pattern under normal lighting conditions, thereby enhancing the visual effect of the tile. This shadow effect not only increases the three-dimensional sense of the pattern, but also provides a richer decorative effect without sacrificing the overall beauty of the tile.

[0066] (2) Compared with traditional ceramic tiles, the ink of the present invention can change to different colors under different lighting conditions. This dynamic color-changing effect enables the ceramic tiles to show different visual effects according to the changes in ambient light, bringing a more vivid and varied decorative atmosphere to the interior space.

[0067] (3) The ceramic ink of the present invention also has an anti-counterfeiting effect, which is lacking in many ceramic tile products on the market. By applying color-changing ink on the surface of ceramic tiles, it is possible to achieve an anti-counterfeiting mark that is difficult to copy without affecting the normal decorative effect of the ceramic tiles, which is of great significance for protecting brands and preventing counterfeit and shoddy products.

[0068] (4) The existing anti-counterfeiting tiles on the market often affect the normal pattern coloring effect of the tiles due to the color and application order of the anti-counterfeiting ink, while the technology of the present invention can achieve the anti-counterfeiting function without destroying the decorative effect. This technology avoids the damage of traditional anti-counterfeiting marks to the beauty of tiles and achieves a harmonious unity of decorativeness and anti-counterfeiting.

[0069] (5) Traditional anti-counterfeiting marks, such as QR codes, are usually printed directly on the tile surface, which may take up a large space and affect the overall appearance of the tile. The technology of the present invention achieves a color-changing effect in the entire or partial pattern on the tile surface, avoiding the need to add additional anti-counterfeiting marks on the tile surface, thereby reducing the space occupied by the tile surface.

[0070] (6) Since the ceramic ink of the present invention can produce shadows or change colors under different lights, this unique visual effect can be used as a product logo to improve the recognition and uniqueness of the product and increase its decorativeness and recognition.

[0071] In summary, the ceramic ink of the present invention not only improves the decorativeness and aesthetics of tiles through its unique color-changing and anti-counterfeiting effects, but also enhances the anti-counterfeiting properties of the product, providing an innovative solution for the ceramic tile industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0073] Figure 1 Schematic diagram of the process of preparing the color-changing textured brick in an embodiment of the present invention;

[0074] Figure 2This is a schematic diagram of the experimental results of the ceramic tile prepared by the method in Example 1 of the present invention under irradiation of a 365nm wavelength ultraviolet lamp;

[0075] Figure 3 This is a schematic diagram of the experimental results of the ceramic tile prepared by the method in Example 2 of the present invention under irradiation of a 365nm wavelength ultraviolet lamp;

[0076] Figure 4 This is a schematic diagram of the experimental results of the ceramic tile prepared by the method in Example 3 of the present invention under irradiation of a 365nm wavelength ultraviolet lamp;

[0077] Figure 5 This is a schematic diagram of the experimental results of the ceramic tile prepared by the method in Comparative Example 1 of the present invention under the irradiation of 365nm wavelength ultraviolet light. DETAILED DESCRIPTION

[0078] The embodiments of the present invention will be described in detail below in conjunction with the examples, but it will be appreciated by those skilled in the art that the following examples are only used to illustrate the present invention and should not be considered as limiting the scope of the present invention. If no specific conditions are specified in the examples, the conditions are carried out according to normal conditions or the conditions recommended by the manufacturer. If the manufacturer of the reagents or instruments used is not specified, they are all conventional products that can be obtained commercially.

[0079] In an embodiment of the present application, a ceramic ink with a color-changing effect is provided, wherein the ceramic ink with a color-changing effect is prepared by mixing a solvent with a color-changing powder;

[0080] The solvent is propylene;

[0081] The color-changing powder includes at least one of purple luminous powder, red luminous powder and green luminous powder.

[0082] The ceramic ink with color-changing effect is prepared by using color-changing powder as solute and propylene as solvent.

[0083] The color-changing powder mentioned above includes at least one of purple luminous powder, red luminous powder and green luminous powder. Different luminous powders have different coloring effects. Therefore, it can be designed according to a pre-determined target pattern or standard pattern, the required color number can be determined, and the corresponding slurry can be formulated.

[0084] For example, in ceramic ink, three kinds of color-changing powders, namely purple luminous powder, red luminous powder and green luminous powder, are used and mixed in a certain ratio to obtain the required color, and then mixed with a solvent to prepare ceramic ink.

[0085] The solvent mentioned above, in addition to propylene, may also use other solvents, for example, may include but are not limited to:

[0086] Alcohols: such as ethanol (C2H5OH), propanol (C3H7OH), etc. These alcohol solvents can provide good solubility and volatility, which helps the printing and drying process of ink.

[0087] Ketones: such as acetone (C3H6O), butanone (C4H8O), etc. Ketone solvents usually have a higher boiling point and good solubility, and are suitable for a variety of pigments and resins.

[0088] Esters: such as ethyl acetate (C4H8O2), butyl acetate (C6H 12 O2), etc. Ester solvents usually have lower toxicity and faster evaporation rate, which helps to increase the drying speed of ink.

[0089] Ethers: such as ether (C4H 10 O), butyl ether (C8H 18 O), etc. Ether solvents have good solubility and low viscosity, which helps to improve the fluidity of ink.

[0090] Aromatic hydrocarbons: such as toluene (C7H8), xylene (C8H 10 ) etc. These solvents have high solubility and low evaporation rate, and are suitable for ink systems that require slower drying. However, this solvent is toxic and needs to be handled in a safe environment.

[0091] Water: In some water-based ceramic inks, water can be used as a solvent. Especially in the development of environmentally friendly inks, water-based inks are favored due to their low toxicity and environmental friendliness.

[0092] N-Methylpyrrolidone (NMP): This is a commonly used industrial solvent with good solubility and low toxicity, suitable for the preparation of a variety of ceramic inks.

[0093] Dimethyl sulfoxide (DMSO): is a polar solvent that can dissolve many pigments and resins that are insoluble in other solvents.

[0094] When selecting a solvent, you need to consider factors such as its compatibility with the color-changing powder, its impact on the printing equipment, drying speed, environmental safety, and cost. Different solvents may have different effects on the stability of the ink, the printing quality, and the final decorative effect. Therefore, in actual applications, it is necessary to select and adjust according to specific production requirements and process conditions.

[0095] Purple glow-in-the-dark powder, red glow-in-the-dark powder and green glow-in-the-dark powder are three different luminescent pigments that can emit their own specific color light under different light sources after absorbing light of a specific wavelength. These glow-in-the-dark powders can be made of specific luminescent materials, and their luminous effect principle is based on the fluorescence effect.

[0096] It should be noted that the fluorescence effect is a photoluminescence phenomenon. When the fluorescent effect substance absorbs light energy, it will emit light of a specific wavelength, but this luminescence phenomenon only lasts when the excitation light source exists. Once the light source disappears, the luminescence phenomenon will also stop accordingly. This phenomenon is different from the phosphorescence effect in traditional technology. In the phosphorescence effect, the substance can continue to emit light for a period of time after the excitation light source disappears.

[0097] After the ceramic ink used in this embodiment is fired to obtain a final product, the process of producing the fluorescent effect can be as follows:

[0098] Excitation: Electrons in a substance absorb the energy of incident light and transition from the ground state (lower energy state) to the excited state (higher energy state).

[0099] Luminescence: Electrons in an excited state are unstable and will quickly return to the ground state. When electrons fall back to the ground state, they release energy, which is usually emitted in the form of light, i.e. fluorescence.

[0100] Stop luminescence: Once the excitation light source disappears, the electrons no longer have enough energy to transition to the excited state, so the fluorescence phenomenon will also stop.

[0101] Purple glow-in-the-dark powder: Its ingredients may include materials such as calcium sulfide, iron oxide, magnesium sulfide, sodium sulfide and silver nitrate. These materials are mixed in a specific proportion and processed by high-temperature calcination and other processes to form a powder with purple luminescent properties. After absorbing light (especially ultraviolet rays), purple glow-in-the-dark powder can emit purple light under a specific light source.

[0102] Red luminous powder: The ingredients of red luminous powder may include barium sulfate, magnesium sulfate, lithium phosphate and copper nitrate. After these materials are processed by a certain process, the powder can emit red light under a specific light source.

[0103] Green luminous powder: The ingredients of green luminous powder may include calcium sulfide, potassium sulfide, sodium sulfide, barium nitrate and indium nitrate. After these materials are mixed and processed by a specific process, the powder can emit green light under a specific light source. Due to its bright luminous properties, green luminous powder can show different decorative effects under different light sources.

[0104] The luminous effect of these luminous powders usually depends on their chemical composition and physical structure, as well as their ability to absorb light energy. During the preparation process, the characteristics such as luminous color, brightness and duration of the luminous effect can be optimized by adjusting the formula and process parameters. In this embodiment, the application in ceramic ink can make the tiles show a unique luminous effect under specific conditions, increasing the aesthetics and functionality of the product.

[0105] As described above, during the configuration process, each luminous powder can be mixed with a solvent to obtain ceramic ink of one color, or different luminous powders can be mixed with solvents to obtain ceramic inks of different colors. Specifically, it needs to be formulated according to the needs of the inkjet printer.

[0106] The ceramic ink provided in the embodiment of the present application realizes a tile decoration technology with a color-changing effect by adding a color-changing powder to a solvent, and the technology shows significant advantages in improving decorativeness and enhancing anti-counterfeiting functions. This ink can increase the shadow effect of the tile pattern under normal lighting, enhance the three-dimensional sense, and show dynamic color changes under different lighting conditions, bringing rich and varied visual effects to interior decoration. More importantly, the ink in the embodiment of the present application also has anti-counterfeiting properties, which can form a mark that is difficult to copy without destroying the decorative effect of the tile, effectively preventing the emergence of counterfeit and shoddy products. In addition, compared with the existing technology on the market, the influence of the color and application order of the anti-counterfeiting ink on the color effect of the tile pattern is avoided, and the harmonious unity of decorativeness and anti-counterfeiting is achieved. It also reduces the occupation of the brick surface space, and there is no need to add additional anti-counterfeiting marks, such as QR codes, on the brick surface, thereby maintaining the overall beauty of the tile. The ink provided in the embodiment of the present application provides a unique visual effect, which can be used as a product logo to improve the recognition and uniqueness of the product.

[0107] In general, the ceramic ink provided in the embodiments of the present application not only improves the decorativeness and aesthetics of the ceramic tiles, but also enhances the anti-counterfeiting properties of the product, providing an innovative solution for the ceramic tile industry.

[0108] Furthermore, the ratio of the solvent to the color-changing powder is (1-2):1;

[0109] Furthermore, the purple luminous powder comprises the following components in parts by weight:

[0110] Calcium sulfide 40-60;

[0111] Iron oxide 2-4;

[0112] Magnesium sulfide 20-40;

[0113] Sodium sulfide 7-9;

[0114] Silver nitrate 2-4.

[0115] Furthermore, the red luminous powder comprises the following components in parts by weight:

[0116] Barium sulfate 50-70;

[0117] Magnesium sulfate 20-40;

[0118] Lithium phosphate 3-5;

[0119] Copper nitrate 5-7.

[0120] Furthermore, the green luminous powder comprises the following components in parts by weight:

[0121] Calcium sulfide 35-55;

[0122] Potassium sulfide 7-9;

[0123] Sodium sulfide 10-20;

[0124] Barium nitrate 12-14;

[0125] Indium nitrate 18-20.

[0126] In addition, in an embodiment of the present application, a method for preparing the ceramic ink having the color-changing effect as described above is also provided, comprising:

[0127] Mixing the solvent with the color-changing powder to obtain a premixed raw material;

[0128] The premixed raw materials are sieved through a sieve to obtain the ceramic ink with color-changing effect;

[0129] Furthermore, the mesh size of the sieve is not less than 1000 meshes.

[0130] As mentioned above, in the process of preparing ceramic ink with color-changing effect, sieving with a 1000 mesh screen is a key step to ensure that the ink formed after the solvent and the color-changing powder are mixed has a high degree of uniformity and stability. This meticulous filtering process helps to eliminate the aggregation and agglomeration of the powder, prevent nozzle clogging or uneven printing during the printing process, and thus ensure the optimization of printing quality. At the same time, the sieving process makes the particle size distribution of the color-changing powder uniform and fine, which not only improves the brightness and clarity of the color effect, but also helps prevent the ink from settling and stratifying during storage, and enhances the fluidity and long-term stability of the ink. In addition, through the standardized screening process, it can be ensured that each batch of ink produced maintains consistent quality standards and meets the strict requirements of ceramic tile decoration for ink performance.

[0131] In addition, reference Figure 1 In an embodiment of the present application, a method for preparing a color-changing textured brick is also provided, comprising:

[0132] Step S1, pre-processing the raw bricks to obtain target bricks;

[0133] The above steps refer to the necessary processing of the original ceramic brick blanks, such as cleaning and trimming, to ensure that the surface of the brick blanks is clean and flat, suitable for subsequent glaze spraying and pattern printing.

[0134] Pretreatment may include physical grinding, chemical cleaning and other processes.

[0135] In a preferred embodiment, the pre-treatment in step 1 may include:

[0136] After the raw bricks are pressed by a press, they are baked at 150° C. to 200° C. for 60 to 70 minutes; and the surfaces of the baked raw bricks are cleaned.

[0137] As mentioned above, the required brick shape and size can be formed by pressing with a press, ensuring the compactness and uniformity of the brick. The brick structure after pressing is more uniform, which is conducive to the subsequent glaze spraying and pattern printing, and improves the quality of the finished product.

[0138] The baking process is to remove moisture from the bricks to prevent cracking or deformation during the subsequent glaze spraying and firing process. The appropriate baking temperature and time can ensure that the moisture is completely evaporated without causing over-sintering or damage to the bricks. Baking can be carried out in a drying kiln.

[0139] Remove dust, impurities or other surface defects that may be generated during the baking process, and provide a clean and flat surface for subsequent glaze spraying and pattern printing. A clean surface helps glaze and ink adhere better to the brick, improving the clarity and decorative effect of the pattern. The surface dust can be cleaned by a grinding machine.

[0140] Through the above steps, a clean and flat brick is obtained, which is ready for the next step of base glaze spraying, thereby ensuring the quality of the brick, improving the yield rate and product quality.

[0141] Step S2, spraying a bottom glaze material on the surface of the target brick blank to form a bottom glaze layer, and spraying a surface glaze material on the surface of the bottom glaze layer to form a glazed brick blank;

[0142] As mentioned above, the spraying of the base glaze and the top glaze is to provide a base coating for the brick, enhance the surface quality of the brick, and create a suitable surface for subsequent pattern printing. The base glaze and the top glaze are evenly sprayed by the automated spraying equipment. A uniform base glaze layer and a top glaze layer are formed to prepare for printing the color-changing pattern.

[0143] This step can improve the surface strength and durability of the brick, while providing good adhesion for pattern printing.

[0144] Step S3, splitting the target pattern into a basic pattern and a color-changing pattern; wherein the basic pattern and the color-changing pattern can form the target pattern by combining or superimposing;

[0145] The target pattern mentioned above is the final product surface pattern of the finished ceramic tile surface to be produced.

[0146] In order to achieve complex pattern effects, the target pattern needs to be split into a basic pattern and a color-changing pattern through a computer, so that they can be sprayed, superimposed and combined separately during further processing to form the final pattern.

[0147] In the above steps, computer-aided design (CAD, Photoshop, etc.) software can be used to split the pattern. Two independent pattern files are obtained, one for basic pattern printing and one for color-changing pattern printing. This increases the complexity and diversity of the pattern and simplifies the printing process.

[0148] Step S4, printing the basic pattern on the glazed brick blank to form a basic layer;

[0149] As mentioned above, the printing of the basic pattern is to form a basic framework of the pattern on the brick blank. The basic pattern is printed on the bottom glaze layer using an inkjet printing device, thereby forming a clear basic pattern layer on the brick blank.

[0150] Step S5, on the base layer, using the ceramic ink with a color-changing effect as described in any one of the above embodiments, printing the color-changing pattern to form a color-changing pattern combined or superimposed with the basic pattern in the base layer as a decorative brick, so as to form the target pattern on the surface of the decorative brick;

[0151] As mentioned above, printing of the color-changing pattern is a key step in achieving the color-changing effect of the tile. Specifically, a specific color-changing ceramic ink is used to print the color-changing pattern on the basic pattern layer to form a pattern layer with a color-changing effect, which is combined or superimposed with the basic pattern.

[0152] The color-changing pattern shows different colors under different lighting conditions, which increases the decorative and anti-counterfeiting effects of the tile. Specifically, it is necessary to precisely control the inkjet print head and the supply of the color-changing ink.

[0153] Step S6, subjecting the decorative brick blank to a glaze spraying treatment, a firing treatment and a polishing treatment in sequence, thereby obtaining the color-changing textured brick.

[0154] As mentioned above, these subsequent processing steps are to protect and enhance the pattern and ensure the durability and aesthetics of the tile. Specifically, the protective glaze spraying process can be performed first, spraying the protective glaze on the pattern to form a protective layer. Then the firing process is performed to fire the brick at a high temperature to solidify the glaze and pattern. Finally, the polishing process is performed to polish the tile surface to improve the gloss and smoothness.

[0155] In the method provided in this embodiment, each step has its specific purpose and processing method, and finally realizes a tile product with a color-changing effect. Through these steps, product quality can be controlled, production efficiency can be improved, and a tile with a unique decorative effect can be created.

[0156] Furthermore, the base glaze material includes the following components in parts by weight:

[0157] Burning soil 30-40;

[0158] Dolomite 10-20;

[0159] Alumina 15-25;

[0160] Wollastonite 25~35.

[0161] As mentioned above, burnt clay, as a ceramic raw material, generally has silicon dioxide (SiO2) and aluminum oxide (Al2O3) as its main components, and these two compounds are inorganic components in ceramic and clay products.

[0162] As mentioned above, dolomite is a common carbonate mineral, which is mainly used in building materials, chemical raw materials, metallurgy, agriculture, environmental protection and other fields. Its main component is calcium magnesium carbonate, with the chemical formula CaMg(CO3)2, in which the ratio of calcium (Ca) and magnesium (Mg) is usually close to 1:1, but this ratio can vary to a certain extent, so dolomite can be regarded as a solid solution of calcium carbonate (limestone, CaCO3) and magnesium carbonate (MgCO3).

[0163] As mentioned above, wollastonite, also known as calcium silicate stone, is a naturally occurring inorganic mineral with a chemical formula of CaSiO3. It is a calcium silicate mineral that usually appears as white or gray glassy crystals or fibrous aggregates.

[0164] Furthermore, the glaze material comprises the following components in parts by weight:

[0165] Sodium feldspar 20-30;

[0166] Calcite 10-15;

[0167] Kaolin 10-20;

[0168] Burnt talc 0-10;

[0169] Potassium feldspar 15-25;

[0170] Alumina 5-10;

[0171] Burning soil 10-20;

[0172] Barium carbonate 0~10.

[0173] Furthermore, the firing time of the firing treatment is 55 minutes to 65 minutes;

[0174] The firing temperature is 1600℃~1700℃.

[0175] And or, the polishing process comprises the following processing steps performed in sequence:

[0176] Abrasive brushes 80 mesh, no less than 6 sets;

[0177] Abrasive brushes 150 mesh, no less than 6 sets;

[0178] Sponge grinding blocks 400 mesh at least 5 groups;

[0179] There should be no less than 5 groups of 600-mesh sponge grinding blocks.

[0180] In addition, a color-changing textured brick is provided in an embodiment of the present application, which is prepared by the method for preparing a color-changing textured brick as described in any of the aforementioned embodiments.

[0181] Table 1, the amount of purple luminous powder in the embodiment

[0182] Purple luminous powder Real 1 Real 2 Reality 3 Calcium sulfide 50 55 60 Iron Oxide 3 3 2 Magnesium sulfide 35 35 30 Sodium sulfide 9 5 6 Silver nitrate 3 2 2

[0183] Table 2, the amount of red luminous powder used in the examples

[0184] Purple luminous powder Real 1 Real 2 Reality 3 Barium sulfate 55 60 65 Magnesium sulfate 35 30 25 Lithium Phosphate 3 4 3 Copper nitrate 7 6 7

[0185] Table 3, Green luminous powder dosage in the examples

[0186] Purple luminous powder Real 1 Real 2 Reality 3 Calcium sulfide 40 45 50 Potassium sulfide 8 8 7 Sodium sulfide 20 15 16 Barium nitrate 14 13 12 Indium nitrate 18 19 15

[0187] Table 4, the amount of glaze used in the examples

[0188] Purple luminous powder Real 1 Real 2 Reality 3 Burnt Earth 30 35 40 dolomite 20 15 10 Alumina 25 20 15 Wollastonite 25 30 35

[0189] Table 5, glaze dosage in the examples

[0190] Purple luminous powder Real 1 Real 2 Reality 3 Sodium feldspar 25 25 30 Calcite 10 12 15 Kaolin 15 15 15 Burnt Talc 8 5 10 Potassium feldspar 20 20 15 Alumina 10 8 5 Burnt Earth 7 10 10 Barium carbonate 5 5 0

[0191] It should be noted that the above amounts are all in parts by weight.

[0192] Example 1

[0193] In this embodiment, the color-changing textured bricks were prepared by the following method.

[0194] Experimental methods:

[0195] S1, after pressing the raw brick blank through a press, baking it at 200° C. for 65 minutes; and cleaning the surface of the baked raw brick blank to obtain a target brick blank;

[0196] S2, referring to the amounts in Table 1 and Table 2, spraying the bottom glaze material on the surface of the target brick to form a bottom glaze layer, and spraying the top glaze material on the surface of the bottom glaze layer to form a glazed brick;

[0197] S3, splitting the target pattern into a basic pattern and a color-changing pattern; wherein the basic pattern and the color-changing pattern can form the target pattern by combining or superimposing;

[0198] S4, printing the basic pattern on the glazed brick blank to form a basic layer;

[0199] S1, on the base layer, based on the dosage of the raw materials in Tables 1-3, a ceramic ink with a color-changing effect is prepared; the color-changing pattern is printed to form a color-changing pattern combined or superimposed with the basic pattern in the base layer as a decorative brick blank, so as to form the target pattern on the surface of the decorative brick blank;

[0200] S1, sequentially performing glaze spraying treatment, firing treatment and polishing treatment on the decorative brick blank to obtain the color-changing textured brick;

[0201] Among them, the firing time is 65 minutes and the firing temperature is 1650℃.

[0202] The polishing process comprises the following processing steps performed in sequence:

[0203] Abrasive brush 80 mesh 6 sets;

[0204] Abrasive brush 150 mesh 6 sets;

[0205] 5 sets of sponge grinding blocks 400 mesh;

[0206] 5 sets of sponge grinding blocks 600 mesh.

[0207] Example 2

[0208] In this embodiment, the color-changing textured bricks were prepared by the following method.

[0209] Experimental methods:

[0210] The method is basically the same as Example 1, except for the amounts of the specific components in Tables 1-5.

[0211] Example 3

[0212] In this embodiment, the color-changing textured bricks were prepared by the following method.

[0213] Experimental methods:

[0214] The method is basically the same as Example 1, except for the amounts of the specific components in Tables 1-5.

[0215] Comparative Example 1:

[0216] In this comparative example, the color-changing textured brick was prepared by the following method.

[0217] Experimental methods:

[0218] The method is basically the same as Example 1, except that the weight proportions of the purple luminous powder used in the ceramic ink are as follows:

[0219] Calcium sulfide 30, iron oxide 15, magnesium sulfide 50, sodium sulfide 2, silver nitrate 3.

[0220] Test method:

[0221] experiment:

[0222] (1) Define the evaluation area (150 mm wide and 200 mm high);

[0223] (2) The evaluation area is illuminated by a (ultraviolet light, YS-518, wavelength 365nm) device, and an image of the tile surface under the illumination of the specific light source device is captured ( Figure 2 to Figure 5 ).

[0224] (3) Evaluate the images corresponding to Examples 1 to 3 and Comparative Example 1.

[0225] Experimental results:

[0226] Table 6 Evaluation results of the states of the embodiments and comparative examples under different light sources

[0227]

[0228] (1)Reference Figure 2 , Figure 3 , Figure 4 and Figure 5 , and the results in Table 6, when analyzing the luminous effect under purple light, the comparison results of different formulas used in Example 1, Example 2, and Example 3 and Comparative Example 1 are significant. The formulas in Examples 1-3 all show good clarity, color development, transparency, three-dimensional effect and fluorescent effect, and all meet the evaluation standard of Class A. The purple luminous powder in these examples uses different ratios of calcium sulfide, iron oxide, magnesium sulfide, sodium sulfide and silver nitrate. The different amounts of these ingredients may have a significant impact on the optical properties and decorative effects of the final product.

[0229] For example, the amount of calcium sulfide is gradually increased in the examples (50, 55, 60), which helps to enhance the fluorescence of the material because calcium sulfide is a commonly used luminescent material. Adjusting the ratio of iron oxide and silver nitrate may also affect the color and fluorescence effects. These two chemicals are usually used to adjust the depth of color and enhance the absorption and emission characteristics of light.

[0230] The specific ratio of the luminous powder in the present application is not used in the formula of Comparative Example 1, wherein the amount of calcium sulfide is relatively low (30), and the amount of iron oxide and magnesium sulfide is higher than that in the formula of Examples 1-3, which is one of the reasons why Comparative Example 1 has a lower score in terms of fluorescence effect, clarity and transparency. The lower ratio of sodium sulfide and silver nitrate also affects the color and three-dimensional sense of the material under violet light irradiation, which indicates that the appropriate increase of these ingredients and reaching the specified amount range of each component of the ceramic ink in the present application is helpful to improve the luminous effect and visual performance.

[0231] In general, the superiority of Examples 1-3 lies in the use of a higher ratio of calcium sulfide and adjusted other ingredients, which help improve the performance of the tiles under natural light and light of a specific wavelength, while the formulation of Comparative Example 1 performs poorly in these aspects. This analysis can guide future product development, especially when selecting the ratio of luminous powder and other related chemical ingredients to achieve the best decorative and functional effects.

[0232] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ceramic ink with a color-changing effect, characterized in that: The ceramic ink with color-changing effect is prepared by mixing a solvent with a color-changing powder; The solvent is propylene; The color-changing powder includes at least one of purple luminous powder, red luminous powder and green luminous powder; Preferably, the ratio of the solvent to the color-changing powder is (1-2):

1.

2. The ceramic ink with color-changing effect as claimed in claim 1, characterized in that: The purple luminous powder comprises the following components in parts by weight: Calcium sulfide 40-60; Iron oxide 2-4; Magnesium sulfide 20-40; Sodium sulfide 7-9; Silver nitrate 2-4.

3. The ceramic ink with color-changing effect as claimed in claim 1, characterized in that: The red luminous powder comprises the following components in parts by weight: Barium sulfate 50-70; Magnesium sulfate 20-40; Lithium phosphate 3-5; Copper nitrate 5-7.

4. The ceramic ink with color-changing effect as claimed in claim 1, characterized in that: The green luminous powder comprises the following components in parts by weight: Calcium sulfide 35-55; Potassium sulfide 7-9; Sodium sulfide 10-20; Barium nitrate 12-14; Indium nitrate 18-20.

5. A method for preparing a ceramic ink having a color-changing effect as claimed in any one of claims 1 to 4, characterized in that: include: Mixing the solvent with the color-changing powder to obtain a premixed raw material; The premixed raw materials are sieved through a sieve to obtain the ceramic ink with color-changing effect; Preferably, the mesh size of the sieve is not less than 1000 meshes.

6. A method for preparing a color-changing textured brick, characterized in that: include: Pre-processing the raw bricks to obtain target bricks; Spraying a bottom glaze material on the surface of the target brick blank to form a bottom glaze layer, and spraying a top glaze material on the surface of the bottom glaze layer to form a glazed brick blank; Splitting the target pattern into a basic pattern and a color-changing pattern; wherein the basic pattern and the color-changing pattern can form the target pattern by combining or superimposing; Printing the basic pattern on the glazed brick blank to form a basic layer; On the base layer, the color-changing pattern is printed using the ceramic ink with color-changing effect as described in any one of claims 1 to 4 to form a color-changing pattern combined or superimposed with the basic pattern in the base layer as a decorative brick blank, so as to form the target pattern on the surface of the decorative brick blank; The decorative brick blank is sequentially subjected to glaze spraying treatment of protective glaze, firing treatment and polishing treatment to obtain the color-changing textured brick; Preferably, the pre-treatment includes: After the raw bricks are pressed by a press, they are baked at 150° C. to 200° C. for 60 to 70 minutes; and the surfaces of the baked raw bricks are cleaned.

7. The method for preparing the color-changing textured brick according to claim 6, characterized in that: The base glaze material comprises the following components in parts by weight: Burning soil 30-40; Dolomite 10-20; Alumina 15-25; Wollastonite 25~35.

8. The method for preparing the color-changing textured brick according to claim 6, characterized in that: The glaze material comprises the following components in parts by weight: Sodium feldspar 20-30; Calcite 10-15; Kaolin 10-20; Burnt talc 0-10; Potassium feldspar 15-25; Alumina 5-10; Burning soil 10-20; Barium carbonate 0~10.

9. The method for preparing the color-changing textured brick according to claim 6, characterized in that: The firing time of the firing treatment is 55 minutes to 65 minutes; the firing temperature is 1600° C. to 1700° C.; And / or, the polishing process comprises the following processing steps performed in sequence: Abrasive brushes 80 mesh, no less than 6 sets; Abrasive brushes 150 mesh, no less than 6 sets; Sponge grinding blocks 400 mesh at least 5 groups; There should be no less than 5 groups of 600-mesh sponge grinding blocks.

10. A color-changing textured brick, characterized in that: The color-changing textured brick is prepared by the preparation method of the color-changing textured brick as described in any one of claims 6 to 9.

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