Preparation method of ceramic tile with high-stability decorative patterns and colors and ceramic tile

Abstract

The invention provides a preparation method of a ceramic tile with high-stability decorative patterns and colors and the ceramic tile, and the method comprises the following steps: mixing and distributing green body powder and pre-prepared color materials, and carrying out compression molding to obtain a whole-body decorative green body; drying the whole-body decorative green body, and applying engobe to the dried whole-body decorative green body; carrying out pattern texture decoration on the full-body decoration green body to which engobe is applied by adopting high-hardness wear-resistant glaze to obtain a decorated green body; colored wear-resistant dry particles, colored glaze or water-based glaze which are prepared in advance are applied to the decorated green body, and a glazed green body is obtained; wear-resistant transparent glaze is applied to the glazed green body, and the ceramic tile is obtained after firing. According to the invention, by preparing the whole decorative body and applying the colored wear-resistant dry particles, colored glaze or water-based glaze on the whole decorative body, the decorative layer is thickened, so that the surface of the ceramic tile does not change in color after being worn, and the problem of chromatic aberration on the surface of the ceramic tile is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic production, and in particular to a method for preparing a ceramic tile with a high-stability decorative pattern and color and the ceramic tile. Background Art

[0002] The floor of public areas generally needs to take into account both aesthetics and functionality. For example, the floor of a rail transit hub generally needs to be made of high-quality, wear-resistant, high-compression-strength, and easy-to-clean materials. If marble, granite, stone, ceramic tiles, etc. are used, the stone should be selected with a size of no less than 300mm×300mm and a thickness of no less than 15mm according to the load-bearing characteristics of the floor.

[0003] However, the existing ceramic tile surface is prone to pattern color change after being worn, which in turn causes color difference on the ceramic tile surface.

[0004] Therefore, the prior art has defects and needs to be improved and developed. Summary of the invention

[0005] The technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, a method for preparing ceramic tiles with high-stability decorative patterns and colors and ceramic tiles are provided, aiming to solve the problem in the prior art that the pattern color of the ceramic tiles is easily changed after the surface is worn, thereby causing color difference on the surface of the ceramic tiles.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0007] The first aspect of the present application provides a method for preparing a ceramic tile with a high-stability decorative pattern and color, which includes:

[0008] The blank powder and the pre-prepared color material are mixed and pressed to obtain a full-body decorative blank;

[0009] Drying the whole body decorative blank, and applying cosmetic soil to the dried whole body decorative blank;

[0010] Using high-hardness wear-resistant glaze to decorate the whole body of the decorative blank with cosmetic soil, so as to obtain a decorated blank;

[0011] Applying pre-prepared colored wear-resistant dry particles, colored glaze or water-based glaze on the decorated body to obtain a glazed body;

[0012] A wear-resistant transparent glaze is applied on the glazed body, and a ceramic tile is obtained after firing.

[0013] In one embodiment of the present application, the color material includes color powder and / or color particles.

[0014] In one embodiment of the present application, the steps of preparing the color powder include:

[0015] The green body slurry is prepared by using the green body powder, and different kinds of colorants are added into the green body slurry and mixed evenly;

[0016] The green body slurry to which the colorant has been added is spray-dried to obtain a color powder;

[0017] The color particles are particles obtained by granulating the color powder through a granulator.

[0018] In one embodiment of the present application, in terms of mass percentage, the green body powder accounts for 70-95%, the color powder accounts for 0-20%, and the color particles account for 0-10%.

[0019] In one embodiment of the present application, the chemical components of the cosmetic soil, measured by mass percentage, include:

[0020] SiO2 50~53%, Al2O3 20~25%, CaO 4~8%, MgO 1~3%, K2O 2~3%, Na2O0~1.2%, ZnO 2~4%, Zr2O3 5~8%, BaO 5~8%.

[0021] In one embodiment of the present application, the chemical components of the high hardness wear-resistant glaze include, by mass percentage:

[0022] SiO2 51~53%, Al2O3 16~20%, CaO 6~8%, MgO 4~6%, K2O 1~3%, Na2O 2~4%, ZnO 2~4%, SrO 4~6%, BaO 4~6%.

[0023] In one embodiment of the present application, the steps of preparing the colored wear-resistant dry particles include:

[0024] Mixing the colorant with the high-hardness wear-resistant glaze to obtain a mixture;

[0025] Melting the mixture at high temperature into a glassy state and then quenching to form a frit;

[0026] The frit is crushed and classified to obtain colored wear-resistant dry particles of different particle sizes;

[0027] Wherein, by mass percentage, the high-hardness wear-resistant glaze accounts for 90-100%, and the colorant accounts for 0-10%.

[0028] In one embodiment of the present application, the colored glaze is obtained by mixing the colorant with the high hardness and wear-resistant glaze; wherein, in terms of mass percentage, the high hardness and wear-resistant glaze accounts for 90 to 100%, and the colorant accounts for 0 to 10%.

[0029] In one embodiment of the present application, pre-prepared colored wear-resistant dry particles, colored glaze or water-based glaze is applied to the decorated body to obtain a glazed body, comprising:

[0030] Applying pre-prepared colored wear-resistant dry particles and / or colored glaze on the decorated body by using a dotting technique to prepare a glazed body with a stone mold surface effect;

[0031] Alternatively, the water-based glaze is sprayed on the decorated body according to a preset file to prepare a glazed body with a mold effect.

[0032] A second aspect of the present application provides a ceramic tile, wherein the ceramic tile is prepared by the method for preparing a ceramic tile with a high-stability decorative pattern and color as described above.

[0033] The present invention discloses a method for preparing a ceramic tile with a high-stability decorative pattern and color and a ceramic tile. The method for preparing a ceramic tile with a high-stability decorative pattern and color comprises: mixing a body powder and a pre-prepared color material, and pressing and molding to obtain a full-body decorative body; drying the full-body decorative body, and applying cosmetic soil to the dried full-body decorative body; using a high-hardness wear-resistant glaze to decorate the full-body decorative body with the cosmetic soil, and obtaining a decorated body; applying pre-prepared colored wear-resistant dry particles, color glaze or water-based glaze on the decorated body, and obtaining a glazed body; applying wear-resistant transparent glaze on the glazed body, and obtaining a ceramic tile after firing. The present invention prepares a full-body decorative body, and applies colored wear-resistant dry particles, color glaze or water-based glaze on the full-body decorative body, so as to thicken the decorative layer, so that the color of the ceramic tile surface will not change after being worn, and the problem of color difference on the ceramic tile surface is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a flow chart of a preferred embodiment of a method for preparing ceramic tiles with high stability decorative patterns and colors in the present invention.

[0035] Figure 2 The invention discloses a process flow chart of a method for preparing ceramic tiles with high-stability decorative patterns and colors.

[0036] Figure 3 This is the rendering of the whole body.

[0037] Figure 4 This is a semi-transparent glaze effect picture.

[0038] Figure 5 This is a picture of the effect of colored glaze dots.

[0039] Figure 6 This is the effect picture of glaze printed by inkjet machine. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] Taking the ground in a rail transit hub as an example, the ground needs to meet the following standards:

[0042] 1. Good anti-slip performance: Anti-slip performance is particularly important on rainy days or after cleaning. In order to ensure the safety of passengers, the anti-slip performance of the floor material must be guaranteed.

[0043] 2. Good wear resistance: The rail station is a high-density passenger flow area, so the wear resistance of the material is also a very important factor.

[0044] 3. Easy to clean and maintain: The floor material of the rail station should be easy to clean and maintain, which can save cleaning personnel and time costs.

[0045] 4. Sustainability: Sustainability of materials can reduce the frequency of material replacement. At the same time, choosing environmentally friendly materials is also conducive to creating a healthy and green urban space.

[0046] Advantages and disadvantages of commonly used ground materials:

[0047] 1. Floor tiles: Ceramic tiles are currently the most widely used material for subway floors. They are wear-resistant and non-slip, easy to clean, and come in rich colors and can be used flexibly. The disadvantage is that after long-term use, the surface will show differences in color and gloss due to wear.

[0048] 2. Floor marble: Marble is hard in texture, has high compressive strength, does not deform or age, and also has natural beauty. However, natural stone is expensive, mining of stone causes great environmental pollution, and it cannot be regenerated after mining.

[0049] 3. Cast iron floor drain plate: The characteristics of cast iron floor drain plate are that it is not easy to deform, corrosion-resistant, and can withstand heavy pressure. For subway stations, it has the characteristics of strong load-bearing capacity, anti-slip, and no noise; however, its aesthetics is not as good as decorative materials such as stone and tiles.

[0050] 4. Floor quartz: The material of quartz is similar to marble, with a flat and smooth appearance and high enough hardness to withstand high-density passenger flow. It is also easy to clean and maintain, making it another good choice for subway station floor decoration materials. However, it has the same problems as stone, in that its mining causes great environmental pollution and cannot be regenerated after mining.

[0051] The present application compares and combines the advantages and disadvantages of natural stone and ceramic tiles, and provides a method for decorating the entire body of ceramic tiles, which combines body spot texture decoration, screen printing technology, roller printing technology, inkjet printing technology, a variety of dry particles and glaze dotting technology or inkjet glaze spraying to generate a mold effect, thereby avoiding the disadvantages of high stone cost, environmentally unfriendly mining process, and poor pressure resistance when the thickness is thin, and solves the problem of color difference of the pattern color that is easily changed after the surface of ordinary ceramic tiles is worn, thereby obtaining a ceramic product with high wear resistance, no color difference after wear, and natural texture.

[0052] See also Figure 1 , Figure 1 The flowchart of the method for preparing ceramic tiles with high stability decorative patterns and colors in the present invention is as follows. Figure 1 As shown, the method for preparing ceramic tiles with high stability decorative patterns and colors according to the embodiment of the present invention comprises the following steps:

[0053] Step S100: Mix the blank powder and the pre-prepared color material, and press them into shape to obtain a full-body decorative blank.

[0054] In the embodiment of the present application, the color material includes color powder and / or color particles. The blank powder, color powder and / or color particles are passed through a distributor to prepare a blank having a stone texture throughout and particles of different colors.

[0055] In the embodiment of the present application, the steps of preparing the color powder include: preparing a green body slurry using green body powder, adding different types of colorants into the green body slurry and mixing them evenly; spray drying the green body slurry to which the colorants have been added to obtain color powder.

[0056] Specifically, the manufacturing method of the color powder is to add different types of colorants to the blank slurry, mix them evenly, and then spray dry them to form color powder, which can include multiple colors. The present application prepares color powder so that it can be mixed with blank powder to obtain a full-body decorative blank.

[0057] In one embodiment of the present application, the color particles are particles obtained by granulating the color powder through a granulator. Specifically, the method for manufacturing the color material particles is to make particles of different shapes, sizes and colors by passing the color powder through a granulator.

[0058] The embodiment of the present application prepares color particles so as to be mixed with blank powder to obtain a fully decorated blank.

[0059] In the embodiment of the present application, by mass percentage, the proportion of the blank powder is 70-95%, the proportion of the color powder is 0-20%, and the proportion of the color particles is 0-10%. In other words, a distributor is used to distribute and press 70-95% of the blank powder, 0-20% of the color powder of various colors, and 0-10% of the color particles to obtain a full-body decorative blank. The distributor is mainly used to distribute the powder in a specific manner on a certain plane, such as a belt, mold or other working surface. Its working principle is usually to achieve a uniform distribution effect by controlling the flow and distribution of the powder.

[0060] like Figure 1 As shown, the method for preparing ceramic tiles with high stability decorative patterns and colors according to the embodiment of the present invention also includes:

[0061] Step S200, drying the whole body decorative blank, and applying cosmetic soil to the dried whole body decorative blank.

[0062] Specifically, after the green body is dried, a small amount of transparent or translucent cosmetic soil is applied.

[0063] In the embodiment of the present application, the chemical components of the cosmetic soil, calculated by mass percentage, include: SiO2 50-53%, Al2O3 20-25%, CaO 4-8%, MgO 1-3%, K2O 2-3%, Na2O0-1.2%, ZnO 2-4%, Zr2O3 5-8%, and BaO 5-8%.

[0064] Specifically, make-up soil is usually made of a mixture of natural clay or other inorganic non-metallic materials. It is evenly applied to the ceramic body to form a non-completely molten covering layer with uniform texture. Make-up soil can cover the rough surface, small holes and harmful mineral particles on the ceramic body, making the surface of the ceramic tile smoother and more delicate. When make-up soil is used as a glaze base (bottom glaze), it can improve the quality of the glaze. The ceramic tiles glazed on the make-up soil have a smooth glaze surface, few pinholes and glaze bubbles, and brighter colors. The presence of make-up soil can also reduce defects on the glaze surface, such as pinholes, glaze bubbles, etc., thereby improving the overall quality of the ceramic tile.

[0065] like Figure 1 As shown, the method for preparing ceramic tiles with high stability decorative patterns and colors according to the embodiment of the present invention also includes:

[0066] Step S300: using a high-hardness wear-resistant glaze to perform pattern and texture decoration on the whole decorative blank to which the cosmetic soil has been applied, to obtain a decorated blank.

[0067] Specifically, a high-hardness wear-resistant glaze system is used, combined with screen printing technology, roller printing technology, and inkjet printing technology to perform pattern texture decoration on semi-finished products in alignment or non-alignment. The ink layer thickness of screen printing is much greater than that of other printing methods, making the pattern texture of the final product more three-dimensional and more textured; roller printing technology is faster when printing materials such as tiles, suitable for mass production, and can significantly improve production efficiency. In addition, the pattern of roller printing is more three-dimensional, making the pattern texture of the final product more vivid and realistic; inkjet printing technology can achieve high-resolution printing, making the pattern texture more delicate and clear.

[0068] In an embodiment of the present application, the chemical components of the high hardness wear-resistant glaze, measured by mass percentage, include: SiO2 51-53%, Al2O3 16-20%, CaO 6-8%, MgO 4-6%, K2O 1-3%, Na2O 2-4%, ZnO 2-4%, SrO 4-6%, and BaO 4-6%.

[0069] Specifically, the high-hardness wear-resistant glaze has high transparency and a glossiness of 5-6 degrees, and can be used as a base material for colored glaze. SiO2 and Al2O3, as the main components of the glaze, have high hardness characteristics, which can effectively improve the wear resistance of the glaze and extend the service life; ZnO and other oxides such as SrO, BaO, etc. can also help to improve the hardness of the glaze and further enhance the wear resistance. In addition, SiO2 and Al2O3 have good chemical stability, can resist the erosion of various chemical substances, and protect the glaze from damage; oxides such as CaO and MgO can also improve the chemical stability of the glaze to a certain extent. K2O and Na2O, as fluxes, can reduce the melting point of the glaze, promote the melting and flow of the glaze, and help to form a uniform and dense glaze layer.

[0070] The embodiment of the present application prepares a high-hardness wear-resistant glaze system, which significantly improves the wear resistance of the ceramic, making the final product more durable and reducing wear during use.

[0071] like Figure 1 As shown, the method for preparing ceramic tiles with high stability decorative patterns and colors according to the embodiment of the present invention also includes:

[0072] Step S400: applying pre-prepared colored wear-resistant dry particles, colored glaze or water-based glaze on the decorated body to obtain a glazed body.

[0073] In an embodiment of the present application, the preparation steps of the colored wear-resistant dry particles include: mixing the colorant with the high hardness wear-resistant glaze to obtain a mixture; melting the mixture into a glassy state at a high temperature and then quenching it to form a frit; crushing and grading the frit to obtain colored wear-resistant dry particles of different particle sizes; wherein, by mass percentage, the high hardness wear-resistant glaze accounts for 90 to 100%, and the colorant accounts for 0 to 10%.

[0074] Specifically, the colored wear-resistant dry particles are obtained by mixing the colorant and the high-hardness wear-resistant glaze, melting them at high temperature into a glassy state, quenching them to form a frit, and then crushing and grading the frit to obtain colored wear-resistant dry particles of different particle sizes. The colorant is an inorganic colorant, that is, by mass percentage, the high-hardness wear-resistant glaze accounts for 90-100%, and the inorganic colorant accounts for 0-10%.

[0075] The embodiment of the present application combines high-hardness wear-resistant glaze with colorant to prepare colored wear-resistant dry particles, so that the colored wear-resistant dry particles can be used to thicken the decorative layer, and even if the surface is worn, there will be no color change.

[0076] In one embodiment of the present application, the colored glaze is obtained by mixing the colorant with the high hardness and wear-resistant glaze; wherein, in terms of mass percentage, the high hardness and wear-resistant glaze accounts for 90 to 100%, and the colorant accounts for 0 to 10%.

[0077] Specifically, the colored glaze may include different colors, and the colorant is an inorganic colorant, that is, by mass percentage, the high-hardness wear-resistant glaze accounts for 90-100%, and the inorganic colorant accounts for 0-10%.

[0078] The embodiment of the present application prepares a colored glaze so that the decorative layer can be thickened by using the colored glaze, and even if the surface is worn, there will be no color change.

[0079] In an embodiment of the present application, step S400 specifically comprises: applying pre-prepared colored wear-resistant dry particles and / or colored glazes on the decorated body by using dotting technology to prepare a glazed body with a stone mold surface effect; or, spraying water-based glaze on the decorated body according to a preset file to prepare a glazed body with a mold effect.

[0080] Specifically, Figure 2 As shown, Figure 2 1, 2, 3, and 4 are all parallel options. High-hardness wear-resistant colored dry particles and / or colored glazes are used to prepare stone surface effects using dotting technology. Colored wear-resistant dry particles or colored glazes can be in a variety of colors, including white and transparent particles. The dry material and glaze technology are used to dot and decorate the semi-finished products, and the natural stone surface effect is obtained at the same time. The specific gravity of the glaze slurry during glazing is 1.60-1.85g / ml.

[0081] You can also use an inkjet machine to spray the mold glaze according to the design file to form a mold effect. The inkjet machine is a device that uses a digital mold surface decoration printing system, such as Figure 2 As shown, the printed material is water-based glaze, that is, the mold glaze is water-based glaze. Specifically, an inkjet machine is used to spray high-hardness wear-resistant glaze or other glazes, including various water-based glaze slurries that can be used in digital mold surface decoration printing systems, and the glaze thickness and texture distribution are controlled by design files.

[0082] The embodiment of the present application adopts a process method of glaze dotting or inkjet printing mold texture on the decorative layer, which reduces the contact between the ceramic decorative layer and the external interface and thus reduces wear.

[0083] like Figure 1 As shown, the method for preparing ceramic tiles with high stability decorative patterns and colors according to the embodiment of the present invention also includes:

[0084] Step S500: applying a wear-resistant transparent glaze on the glazed body, and obtaining a ceramic tile after firing.

[0085] Specifically, the wear-resistant transparent glaze can be the high-hardness wear-resistant glaze. In the embodiment of the present application, after spraying a small amount of wear-resistant transparent glaze, the finished product is fired at high temperature.

[0086] In this way, the embodiment of the present application combines a variety of decorative processes to prepare ceramic tiles, which solves the defects of color fading and gloss change after long-term wear of ceramic tiles. It combines the advantages of both ceramic tiles and stone, so that it can replace ordinary glazed tiles and expensive natural stones, and can be used in high-density crowd places including rail transit.

[0087] Specific embodiments are listed below for illustration.

[0088] Embodiment 1

[0089] Step 1: The blank distributor distributes 90% of the blank powder and 9% of the gray-black color powder into the designed stone texture, wherein the gray-black color powder includes 98% of the blank powder and 2% of the black color material by mass percentage. 1% of color particles of different sizes and shapes are mixed into it, and then the press is pressed into a full-body blank with a stone texture, such as Figure 3 shown.

[0090] Step 2: After the body is dry, apply the cosmetic soil on the surface of the body as a carrier for later decoration at a rate of 200g / m 2 The glaze is applied with an amount of glaze. The basic chemical composition of the cosmetic soil is shown in Table 1 according to mass percentage.

[0091] Table 1

[0092] name <![CDATA[SiO2]]> <![CDATA[Al2O3]]> CaO MgO <![CDATA[K2O]]> <![CDATA[Na2O]]> ZnO <![CDATA[Zr2O3]]> BaO Makeup soil 51.5 20.5 6.6 2 2.8 0.8 2.6 6.8 6.4

[0093] Step 3: Using high hardness and wear-resistant glaze as the basic glaze, adding colorants and corresponding auxiliary materials to process it into flower glaze, and decorating the pattern according to the designed flower net or roller to make the surface decorative layer have higher hardness and wear resistance. Among them, the basic chemical composition of high hardness and wear-resistant glaze is shown in Table 2 according to mass percentage.

[0094] Table 2

[0095]

[0096] Step 4: Adjust the glaze slurry of high hardness wear-resistant glaze to a specific gravity of 1.78g / ml, and use glaze throwing equipment to dot, forming transparent or translucent particles of different sizes on the semi-finished product, with a particle size of 0-1mm and a thickness of 0-0.5mm. Figure 4 shown.

[0097] Step 5: Adjust the glaze slurry of high hardness wear-resistant glaze into a glaze slurry with a specific gravity of 1.35g / ml, and use the glaze slurry as wear-resistant transparent glaze at a rate of 100g / m 2 Apply the appropriate amount of glaze.

[0098] Step 6: After the product is fired in a kiln at high temperature, ceramic tiles are obtained.

[0099] Embodiment 2

[0100] Step 1: The blank distributor distributes 92% of the blank powder and 8% of the black color powder into the designed stone texture, wherein the black color powder comprises 96% of the blank powder and 4% of the black colorant by mass percentage, and the press presses the blank into a full-body blank with a stone texture.

[0101] Step 2: After the body is dry, apply the cosmetic soil on the surface of the body as a carrier for later decoration at a rate of 180g / m 2 The glaze is applied with an amount of glaze. The effective chemical composition of the cosmetic soil is shown in Table 3 according to mass percentage.

[0102] Table 3

[0103] name <![CDATA[SiO2]]> <![CDATA[Al2O3]]> CaO MgO <![CDATA[K2O]]> <![CDATA[Na2O]]> ZnO <![CDATA[Zr2O3]]> BaO Makeup soil 51.5 20.5 6.6 2 2.8 0.8 2.6 6.8 6.4

[0104] Step 3: Use high hardness and wear-resistant glaze as the basic glaze, add colorants and corresponding auxiliary materials to process it into flower glaze, and decorate the pattern according to the designed flower net or roller to make the surface decorative layer have higher hardness and wear resistance. The basic chemical composition of the high hardness and wear-resistant glaze is shown in Table 4 according to mass percentage.

[0105] Table 4

[0106]

[0107] Step 4: According to the mass percentage, 97% of the high hardness wear-resistant glaze and 3% of the black colorant are prepared into colored dry particles, and the colored dry particles are applied to the semi-finished product by a glaze throwing process or a glaze pouring process. The glaze slurry has a specific gravity of 1.40g / ml during glaze throwing, and colored particles of different sizes are formed on the semi-finished product, with a size of 0-1.5mm and a thickness of 0-0.5mm. Figure 5 shown.

[0108] Step 5: Adjust the glaze slurry of high hardness wear-resistant glaze into a glaze slurry with a specific gravity of 1.35g / ml, and use the glaze slurry as wear-resistant transparent glaze at a specific gravity of 90g / m 2 Apply the appropriate amount of glaze.

[0109] Step 6: After the product is fired in a kiln at high temperature, ceramic tiles are obtained.

[0110] Embodiment 3

[0111] Step 1: A blank distributor mixes 95% of blank powder, 3% of black color particles and 2% of gray color particles, wherein the black color particles include, by mass percentage, 96% of blank powder and 4% of black color material; the gray color particles include, by mass percentage, 98.5% of blank powder and 1.5% of black color material, and then a press is used to press the blank into a full-body blank with various spots.

[0112] Step 2: After the body is dry, apply the cosmetic soil on the surface of the body as a carrier for later decoration at a rate of 150g / m 2 The glaze is applied with an amount of glaze. The basic chemical composition of the cosmetic soil is shown in Table 5 according to mass percentage.

[0113] Table 5

[0114] name <![CDATA[SiO2]]> <![CDATA[Al2O3]]> CaO MgO <![CDATA[K2O]]> <![CDATA[Na2O]]> ZnO <![CDATA[Zr2O3]]> BaO Makeup soil 51.2 21 5.8 2.2 2.8 1.1 2.9 6.6 6.4

[0115] Step 3: Use high hardness and wear-resistant glaze as the basic glaze, add colorants and corresponding auxiliary materials to make it into flower glaze, and decorate the pattern according to the designed flower net or roller, or use an inkjet machine to print the design, so that the surface decoration layer has higher hardness and wear resistance. The effective chemical composition of the high hardness and wear-resistant glaze is shown in Table 6 according to mass percentage.

[0116] Table 6

[0117]

[0118] Step 4: Use an inkjet printer to print the glaze slurry of high hardness and wear-resistant glaze (the glaze slurry properties are shown in Table 7) on the semi-finished product according to the design file to obtain a stone mold effect with a thickness of 0 to 1.5 mm. Figure 6 shown.

[0119] Table 7

[0120] Glaze properties proportion Flow rate Fineness Viscosity Inkjet glaze slurry 1.70g / ml 20 seconds >200 mesh 80-90mpa.s

[0121] Step 5: Adjust the glaze slurry of high hardness wear-resistant glaze into a glaze slurry with a specific gravity of 1.35g / ml, and use the glaze slurry as wear-resistant transparent glaze at a specific gravity of 80g / m 2 Apply the appropriate amount of glaze.

[0122] Step 6: After the product is fired in a kiln at high temperature, ceramic tiles are obtained.

[0123] Embodiment 4

[0124] Step 1: The blank distributor distributes 95% of the blank powder and 5% of the brown color powder (97% of the blank powder and 3% of the brown color powder) into the designed stone texture, wherein the brown color powder includes 97% of the blank powder and 3% of the brown color powder by mass percentage. Then the press presses the blank into a full body with a stone texture.

[0125] Step 2: After the body is dry, apply the cosmetic soil on the surface of the body as a carrier for later decoration at a rate of 200g / m 2 The glaze was applied with an amount of glaze, and the effective chemical composition of the engobe is shown in Table 8.

[0126] Table 8

[0127] name <![CDATA[SiO2]]> <![CDATA[Al2O3]]> CaO MgO <![CDATA[K2O]]> <![CDATA[Na2O]]> ZnO <![CDATA[Zr2O3]]> BaO Makeup soil 51.3 20.7 6.8 1.8 2.9 0.7 2.4 7.2 6.2

[0128] Step 3: Use high hardness and wear-resistant glaze as the base glaze, add colorants and corresponding auxiliary materials to make it into flower glaze, and decorate the pattern according to the designed flower net or roller to make the surface decorative layer have higher hardness and wear resistance. The effective chemical composition of the high hardness and wear-resistant glaze is shown in Table 9 according to mass percentage.

[0129] Table 9

[0130]

[0131] Step 4: According to the mass percentage, 96% of the high hardness wear-resistant glaze and 4% of the black colorant are prepared as a colored glaze, and the glaze is applied to the semi-finished product by a glaze throwing process. The specific gravity of the glaze slurry during glaze throwing is 1.75g / ml; color particles of different sizes are formed on the semi-finished product, with a size of 0-1.5mm and a thickness of 0-0.5mm. Figure 5 shown.

[0132] Step 5: Adjust the glaze slurry of high hardness wear-resistant glaze into a glaze slurry with a specific gravity of 1.35g / ml, and use the glaze slurry as wear-resistant transparent glaze at a specific gravity of 90g / m 2 Apply the appropriate amount of glaze.

[0133] Step 6: After the product is fired in a kiln at high temperature, ceramic tiles are obtained.

[0134] This application achieves the following beneficial effects:

[0135] First, the whole body decoration technology is used to achieve the stone-level decorative effect, so that the surface decoration matches the body decoration.

[0136] Second, a high-hardness, wear-resistant glaze system was prepared under certain production conditions, which reduced wear during use.

[0137] Third, combine high-hardness wear-resistant glaze with colored glaze to thicken the decorative layer, so that even if the surface is worn, there will be no color change.

[0138] Fourth, the process of using glaze dotting or inkjet printing mold texture on the decorative layer reduces the contact between the ceramic decorative layer and the external interface, thereby reducing wear.

[0139] Fifth, by analyzing the problems of existing stone and ceramic tiles in public rail transit hubs, new ceramic tile products are prepared by combining the whole body, color glaze decoration with special wear-resistant formula, color glaze dotting or inkjet glazing technology. The products can be used in public spaces with large traffic.

[0140] The present application uses an accelerated wear tester to conduct product wear tests, and the test results show that the ceramic tile products prepared in the present application can withstand millions of frictions without causing color deviation.

[0141] The present application also provides a ceramic tile, which is prepared by the method for preparing a ceramic tile with a high-stability decorative pattern and color as described above.

[0142] The present invention provides a method for preparing a ceramic tile with a high-stability decorative pattern and color and a ceramic tile, the method for preparing a ceramic tile with a high-stability decorative pattern and color comprising: mixing a body powder and a pre-prepared color material, and pressing and molding to obtain a full-body decorative body; drying the full-body decorative body, and applying cosmetic soil to the dried full-body decorative body; using a high-hardness wear-resistant glaze to decorate the full-body decorative body with the cosmetic soil, and obtaining a decorated body; applying pre-prepared colored wear-resistant dry particles, color glaze or water-based glaze on the decorated body, and obtaining a glazed body; applying wear-resistant transparent glaze on the glazed body, and obtaining a ceramic tile after firing. The present invention prepares a full-body decorative body, and applies colored wear-resistant dry particles, color glaze or water-based glaze on the full-body decorative body, so as to thicken the decorative layer, so that the color of the ceramic tile surface will not change after being worn, and the problem of color difference on the ceramic tile surface is avoided. Applying high-hardness wear-resistant glaze to colored glaze makes the colored glaze have both high hardness and wear resistance, while thickening the decorative layer of the product. The color of the decorative layer itself gives it the special property that the color will not change after the surface is worn, ensuring the durability of the product.

[0143] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A method for preparing ceramic tiles with high stability decorative patterns and colors, characterized in that: include: The blank powder and the pre-prepared color material are mixed and pressed to obtain a full-body decorative blank; Drying the whole body decorative blank, and applying cosmetic soil to the dried whole body decorative blank; Using high-hardness wear-resistant glaze to decorate the whole body of the decorative blank with cosmetic soil, so as to obtain a decorated blank; Applying pre-prepared colored wear-resistant dry particles, colored glaze or water-based glaze on the decorated body to obtain a glazed body; A wear-resistant transparent glaze is applied on the glazed body, and a ceramic tile is obtained after firing.

2. The method for preparing ceramic tiles with high stability decorative patterns and colors according to claim 1, characterized in that: The color material includes color powder and / or color particles.

3. The method for preparing ceramic tiles with high stability decorative patterns and colors according to claim 2, characterized in that: The preparation steps of the color powder include: The green body slurry is prepared by using the green body powder, and different kinds of colorants are added into the green body slurry and mixed evenly; The green body slurry to which the colorant has been added is spray-dried to obtain a color powder; The color particles are particles obtained by granulating the color powder through a granulator.

4. The method for preparing ceramic tiles with high stability decorative patterns and colors according to claim 2, characterized in that: In terms of mass percentage, the green body powder accounts for 70-95%, the color powder accounts for 0-20%, and the color particles account for 0-10%.

5. The method for preparing ceramic tiles with high stability decorative patterns and colors according to claim 1, characterized in that: The chemical components of the cosmetic soil include, by mass percentage: SiO2 50~53%, Al2O3 20~25%, CaO 4~8%, MgO 1~3%, K2O 2~3%, Na2O0~1.2%, ZnO 2~4%, Zr2O3 5~8%, BaO 5~8%.

6. The method for preparing ceramic tiles with high stability decorative patterns and colors according to claim 1, characterized in that: The chemical components of the high hardness wear-resistant glaze include, by mass percentage: SiO2 51~53%, Al2O3 16~20%, CaO 6~8%, MgO 4~6%, K2O 1~3%, Na2O 2~4%, ZnO 2~4%, SrO 4~6%, BaO 4~6%.

7. The method for preparing ceramic tiles with high stability decorative patterns and colors according to claim 1, characterized in that: The preparation steps of the colored wear-resistant dry particles include: Mixing the colorant with the high-hardness wear-resistant glaze to obtain a mixture; Melting the mixture at high temperature into a glassy state and then quenching to form a frit; The frit is crushed and classified to obtain colored wear-resistant dry particles of different particle sizes; Wherein, by mass percentage, the high-hardness wear-resistant glaze accounts for 90-100%, and the colorant accounts for 0-10%.

8. The method for preparing ceramic tiles with high stability decorative patterns and colors according to claim 1, characterized in that: The colored glaze is obtained by mixing the colorant with the high-hardness wear-resistant glaze; wherein, by mass percentage, the high-hardness wear-resistant glaze accounts for 90-100%, and the colorant accounts for 0-10%.

9. The method for preparing ceramic tiles with high stability decorative patterns and colors according to claim 1, characterized in that: Applying pre-prepared colored wear-resistant dry particles, colored glaze or water-based glaze on the decorated body to obtain a glazed body, comprising: Applying pre-prepared colored wear-resistant dry particles and / or colored glaze on the decorated body by using a dotting technique to prepare a glazed body with a stone mold surface effect; Alternatively, the water-based glaze is sprayed on the decorated body according to a preset file to prepare a glazed body with a mold effect.

10. A ceramic tile, characterized in that: The ceramic tile is prepared by the method for preparing a ceramic tile with a high-stability decorative pattern and color as described in any one of claims 1 to 9.

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