A frit and its preparation method, a glaze, and a ceramic brick and its preparation method.

Abstract

This invention discloses a frit, comprising, by weight, the following raw materials: 8-10 parts albite, 5-10 parts strontium carbonate, 5-15 parts alumina, 1-6 parts corundum, 3-6 parts borax, 10-15 parts diopside, 5-10 parts clay, 10-15 parts fluorite, 15-20 parts quartz, 4-10 parts dolomite, and 1-2 parts nepheline. This frit possesses advantages such as strong water retention and good screen-removal properties. Glazes prepared using this frit can solve problems encountered in the production of marble ceramic tiles using large-format screen printing, including easy adhesion to the screen, easy detachment, poor water retention, uneven printing, and pattern layer adhesion caused by large screen size and slow screen lifting.

Description

Technical Field

[0001] This invention relates to the field of building ceramics, and in particular to a frit and its preparation method, a glaze, a ceramic brick and its preparation method. Background Technology

[0002] In the ceramics industry, the continuous advancement of screen printing technology has led to its increasingly widespread application. Ceramic decorative patterns printed using screen printing are more refined, with brighter colors and a more three-dimensional effect, while also being durable and colorfast.

[0003] Current screen printing is mainly used for small-sized ceramic tile products, and the technology is relatively mature. However, large-format screen printing, due to its larger screen size and slower screen retraction after printing, presents the following two problems:

[0004] 1. During the printing process, the contact time between the glaze and the inkjet color image is too long, which causes the inkjet image to stick when the screen is lifted, and the inkjet layer is easily stuck together;

[0005] 2. After brushing, the glaze layers overlap, and the large amount of glaze makes it difficult for the glaze surface to dry. Different screens overlap, and the next screen will stick the glaze from the previous screen, resulting in white spots.

[0006] Therefore, it is necessary to develop a glaze that can be applied to the production of large-format (900*1800mm and above) marble tiles to solve the problems of easy screen adhesion and easy detachment, poor water retention and uneven printing of marble tiles when using screen printing process in the production of large-format marble tiles in the existing technology. Summary of the Invention

[0007] The main objective of this invention is to propose a frit suitable for large-format screen printing of ceramic tiles. The glaze made using this frit can solve the problems in the prior art such as easy adhesion and detachment of the glaze, poor water retention, and uneven printing when preparing marble tiles by large-format screen printing.

[0008] To achieve the above objectives, the present invention proposes a frit comprising, by weight, the following raw materials: 8-10 parts of albite, 5-10 parts of strontium carbonate, 5-15 parts of alumina, 1-6 parts of corundum, 3-6 parts of borax, 10-15 parts of diopside, 5-10 parts of clay, 10-15 parts of fluorite, 15-20 parts of quartz, 4-10 parts of dolomite, and 1-2 parts of nepheline.

[0009] This invention develops a frit with strong water retention and good screen-retention properties by adjusting the composition and ratio of raw materials. Glazes made using this frit can solve problems such as easy screen adhesion and detachment, poor water retention, and uneven printing in different screen printing processes. It is particularly suitable for the production of marble ceramic tiles using large-format screen printing, avoiding problems such as glaze adhesion or pattern layer adhesion caused by the large screen size and slow screen lifting in large-format screen printing processes.

[0010] Preferably, the chemical composition of the fused block, by mass percentage, includes: 43-50% SiO2, 16-21% Al2O3, 1-3% Fe2O3, 5-10% CaO, 1-3% MgO, 1-5% K2O, 5-10% Na2O, 5-15% ZnO, and 1-3% loss on ignition, with the balance being impurities.

[0011] In addition, the present invention also discloses a method for preparing the above-mentioned frit, comprising the following steps:

[0012] (1) Mix all the raw materials evenly according to the proportions;

[0013] (2) The raw materials are sintered at 1300-1400℃ to form a glass liquid, and then quenched with water;

[0014] (3) After the water-quenched molten block is dried and ground, it is soaked in hydrochloric acid for 30-40 minutes, dried at 120-150℃, and then sieved to obtain the molten block.

[0015] The present invention also discloses a glaze comprising, by weight, the following raw materials: 10-25 parts potassium feldspar, 15-25 parts frit, 3-5 parts dolomite, 10-15 parts limestone, 1-5 parts barium carbonate, 10-15 parts lithium feldspar, 6-10 parts kaolin, 5-10 parts zinc oxide, and 10-15 parts strontium carbonate; wherein the frit is any one of the frits described above.

[0016] The present invention obtains the above-mentioned raw material composition ratio through various adjustments. The resulting glaze not only has good water retention and is suitable for the preparation of marble tiles using large-format screen printing technology, but also has a delicate and soft glaze surface, good glaze slurry performance, which is conducive to color development of pigments, high glaze slurry density, good anti-slip effect, high wear resistance, good stain resistance, and easy cleaning.

[0017] This invention also discloses a method for preparing ceramic tiles, using the glaze described above, comprising the following steps:

[0018] A. Preparation of ceramic green body;

[0019] B. Apply a surface glaze to the surface of the ceramic body to obtain a surface glaze layer; print a preset pattern on the surface glaze layer;

[0020] C. Prepare the glaze by applying it onto a preset pattern using screen printing.

[0021] D. After calcination, the ceramic brick is obtained.

[0022] The above method can be used to prepare ultra-large marble tiles using screen printing technology. The resulting tiles have high color saturation, good anti-slip effect, high wear resistance, good stain resistance, and are easy to clean. This can meet people's current high-quality demand for ultra-large marble tiles, while also improving production efficiency and simplifying the production process.

[0023] Preferably, in the above preparation method, step C, the method for preparing the glaze includes the following steps:

[0024] The raw materials, printing paste, printing oil and water of the glaze are mixed evenly and ball-milled for 25 minutes. Each 100g is then passed through a 400-mesh sieve to obtain the glaze. The amount of water added is 10-15% of the total weight of the raw materials of the glaze.

[0025] Preferably, in the above preparation method, in step D, the calcination temperature is 1180-1210℃ and the calcination time is 60-70 min.

[0026] The present invention also discloses a ceramic brick prepared by the above-described preparation method.

[0027] Compared with existing technologies, this invention has at least the following beneficial effects: it solves the problems of glaze sticking to the screen, easy falling off, poor water retention, and uneven printing in ultra-large screen printing (900*1800mm) technology; it enables the production of marble tiles using ultra-large screen printing technology, thereby enhancing the richness of the glaze color, reducing the amount of inkjet ink used, making the glaze color more vibrant and three-dimensional, and providing the tiles with good anti-slip effect, high wear resistance, good stain resistance, and easy cleaning. The production process is simple, stable, and efficient. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a rendering of the ceramic tile surface obtained in Example 5.

[0030] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In addition, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0032] The present invention provides a frit, comprising the following raw materials in parts by weight: 8-10 parts of albite, 5-10 parts of strontium carbonate, 5-15 parts of alumina, 1-6 parts of corundum, 3-6 parts of borax, 10-15 parts of diopside, 5-10 parts of clay, 10-15 parts of fluorite, 15-20 parts of quartz, 4-10 parts of dolomite, and 1-2 parts of nepheline.

[0033] Its chemical composition, by mass percentage, includes: SiO2 43-50%, Al2O3 16-21%, Fe2O3 1-3%, CaO 5-10%, MgO 1-3%, K2O 1-5%, Na2O 5-10%, ZnO 5-15%, and loss on ignition 1-3%, with the balance being impurities.

[0034] The frit has strong water retention and good screen-retention properties. When used in glazes, it can solve problems such as easy screen sticking, easy detachment, poor water retention, and uneven printing in different screen printing processes. It is especially suitable for ultra-large screen printing technology, and can avoid problems such as glaze adhesion or pattern layer adhesion caused by large screen size and slow screen lifting.

[0035] The above-mentioned method for preparing the fused block includes the following steps:

[0036] (1) Mix all the raw materials evenly according to the proportions;

[0037] (2) The raw materials are sintered at 1300-1400℃ to form a glass liquid, and then quenched with water;

[0038] (3) After the water-quenched molten block is dried and ground, it is soaked in hydrochloric acid for 30-40 minutes, dried at 120-150℃, and then sieved to obtain the molten block.

[0039] A glaze comprising the aforementioned frit, by weight, includes the following raw materials: 10-25 parts potassium feldspar, 15-25 parts frit, 3-5 parts dolomite, 10-15 parts limestone, 1-5 parts barium carbonate, 10-15 parts lithium feldspar, 6-10 parts kaolin, 5-10 parts zinc oxide, and 10-15 parts strontium carbonate. The resulting glaze exhibits superior overall performance, with excellent anti-slip properties, wear resistance, and stain resistance. It also boasts high color saturation and excellent color development, achieving the same color effect with only half the amount of conventional ink.

[0040] A method for preparing ceramic tiles using the above-mentioned glaze includes the following steps:

[0041] A. Prepare ceramic blanks, dry them and set them aside for use; wet the dried ceramic blanks with water so that the surface of the blanks contains 4-6% moisture.

[0042] B. Prepare the materials according to the proportion of each raw material in the glaze layer. After mixing them thoroughly, add water equal to 40% of the total weight of each raw material in the glaze layer. After ball milling for 25 minutes per 100g, pass the mixture through a 325-mesh sieve to obtain the glaze material. Apply the glaze to the surface of the ceramic body to obtain the glaze layer. Print the preset pattern on the glaze layer.

[0043] C. Mix the raw materials, printing paste, printing oil, and water of the above-mentioned glaze evenly and ball mill for 25 minutes. Pass each 100g of the mixture through a 400-mesh sieve to obtain the above-mentioned glaze. The amount of water added is 10-15% of the total weight of the raw materials of the glaze. Preferably, 50-60 parts of printing paste, 10-20 parts of printing oil, and 10-15g of water are used. Apply the glaze to the preset pattern using screen printing.

[0044] D. The green body obtained in step C is calcined in a kiln at a high temperature of 1180-1210℃ for 60-70 minutes to obtain the ceramic brick.

[0045] The embodiments of the present invention will be described in detail below with reference to specific examples. However, those skilled in the art will understand that the following examples are for illustrative purposes only and should not be considered as limiting the scope of the invention. Unless otherwise specified in the examples, conventional conditions or conditions recommended by the manufacturer are followed. Reagents or instruments whose manufacturers are not specified are all commercially available products.

[0046] This invention can use any commercially available conventional ceramic powder to make ceramic green bodies. A set of green bodies is provided here for the preparation of ceramic green bodies in the following embodiments. The chemical composition of the green body powder, by mass percentage, includes: SiO2: 40%, Al2O3: 20%; Fe2O3: 0.01%; CaO: 3.5%; MgO: 6%; K2O: 1%; Na2O: 17%; TiO2: 2%; BaO: 7%; ZnO: 2.5%; MnO < 0.01%; P2O5 < 0.01%; SO3 < 0.02%; ZrO2 < 0.4%; SrO < 0.04%; and loss on ignition 0.5%.

[0047] This invention can use any commercially available conventional glaze raw materials to make the glaze layer. Here, a set of raw material composition for the preparation of the glaze layer in the following embodiments is provided. By weight, it includes the following raw materials: 42 parts of lithium feldspar, 10 parts of quartz, 10 parts of wollastonite, 9 parts of kaolin, 5 parts of zinc oxide, 11 parts of alumina, 13 parts of zirconium silicate, 0.15 parts of methylcellulose, and 0.55 parts of sodium tripolyphosphate.

[0048] Example 1

[0049] Preparation of frit:

[0050] (1) Mix the raw materials thoroughly and evenly according to the proportions shown in Table 1;

[0051] (2) Melt the glass at 1350℃ and then quench it in water;

[0052] (3) After the water-quenched molten block is dried and ground, it is soaked in hydrochloric acid for 35 minutes, dried at 125°C, and passed through a 325-mesh sieve to obtain the molten block for later use.

[0053] The chemical composition of the prepared molten ingot is shown in Table 2.

[0054] Prepare raw glaze powder by thoroughly mixing the raw material components shown in Table 3, adding 55 parts of printing paste, 15 parts of printing oil and 15g of water, ball milling for 25 minutes per 100g, and passing through a 400-mesh sieve to prepare glaze material for later use.

[0055] A method for preparing ceramic tiles includes the following steps:

[0056] A. Prepare ceramic powder into ceramic blanks with dimensions of 900*1800mm, dry them and set them aside for use; wet the dried ceramic blanks with water so that the surface of the blanks contains 4-6% moisture.

[0057] B. Prepare the materials according to the proportion of each raw material in the glaze layer. After mixing them thoroughly, add water equal to 40% of the total weight of each raw material in the glaze layer. After ball milling for 25 minutes per 100g, pass the mixture through a 325-mesh sieve to obtain the glaze material. Apply the glaze to the surface of the ceramic body to obtain the glaze layer. Print the preset pattern on the glaze layer.

[0058] C. Apply glaze to the pre-designed pattern using screen printing;

[0059] D. The green body obtained in step C is calcined in a kiln at a high temperature of 1190℃ for 65 minutes to obtain the ceramic brick.

[0060] Example 2

[0061] Preparation of frit:

[0062] (1) Mix the raw materials thoroughly and evenly according to the proportions shown in Table 1;

[0063] (2) Melt the glass at 1380℃ and then quench it in water;

[0064] (3) After the water-quenched molten block is dried and ground, it is soaked in hydrochloric acid for 38 minutes, dried at 130°C, and passed through a 325-mesh sieve to obtain the molten block for later use.

[0065] The chemical composition of the prepared molten ingot is shown in Table 2.

[0066] Prepare raw glaze powder by thoroughly mixing the raw material components shown in Table 3, adding 57 parts of printing paste, 13 parts of printing oil and 12g of water, ball milling for 25 minutes per 100g, and passing through a 400-mesh sieve to prepare glaze material for later use.

[0067] A method for preparing ceramic tiles includes the following steps:

[0068] A. Prepare ceramic powder into ceramic blanks with dimensions of 900*1800mm, dry them and set them aside for use; wet the dried ceramic blanks with water so that the surface of the blanks contains 4-6% moisture.

[0069] B. Prepare the materials according to the proportion of each raw material in the glaze layer. After mixing them thoroughly, add water equal to 40% of the total weight of each raw material in the glaze layer. After ball milling for 25 minutes per 100g, pass the mixture through a 325-mesh sieve to obtain the glaze material. Apply the glaze to the surface of the ceramic body to obtain the glaze layer. Print the preset pattern on the glaze layer.

[0070] C. Apply glaze to the pre-designed pattern using screen printing;

[0071] D. The green body obtained in step C is calcined in a kiln at a high temperature of 1200℃ for 68 minutes to obtain the ceramic brick.

[0072] Example 3

[0073] Preparation of frit:

[0074] (1) Mix the raw materials thoroughly and evenly according to the proportions shown in Table 1;

[0075] (2) Melt the glass at 1385℃ and then quench it in water;

[0076] (3) After the water-quenched molten block is dried and ground, it is soaked in hydrochloric acid for 40 minutes, dried at 135°C, and passed through a 325-mesh sieve to obtain the molten block for later use.

[0077] The chemical composition of the prepared molten ingot is shown in Table 2.

[0078] Prepare raw glaze powder by thoroughly mixing the raw material components shown in Table 3, adding 54 parts of printing paste, 14 parts of printing oil and 14g of water, ball milling for 25 minutes per 100g, and passing through a 400-mesh sieve to prepare glaze material for later use.

[0079] A method for preparing ceramic tiles includes the following steps:

[0080] A. Prepare ceramic powder into ceramic blanks with dimensions of 900*1800mm, dry them and set them aside for use; wet the dried ceramic blanks with water so that the surface of the blanks contains 4-6% moisture.

[0081] B. Prepare the materials according to the proportion of each raw material in the glaze layer. After mixing them thoroughly, add water equal to 40% of the total weight of each raw material in the glaze layer. After ball milling for 25 minutes per 100g, pass the mixture through a 325-mesh sieve to obtain the glaze material. Apply the glaze to the surface of the ceramic body to obtain the glaze layer. Print the preset pattern on the glaze layer.

[0082] C. Apply glaze to the pre-designed pattern using screen printing;

[0083] D. The green body obtained in step C is calcined in a kiln at a high temperature of 1195℃ for 67 minutes to obtain the ceramic brick.

[0084] Example 4

[0085] Preparation of frit:

[0086] (1) Mix the raw materials thoroughly and evenly according to the proportions shown in Table 1;

[0087] (2) Melt the glass at 1395℃ and then quench it with water;

[0088] (3) After the water-quenched molten block is dried and ground, it is soaked in hydrochloric acid for 40 minutes, dried at 138°C, and passed through a 325-mesh sieve to obtain the molten block for later use.

[0089] The chemical composition of the prepared molten ingot is shown in Table 2.

[0090] Prepare raw glaze powder by thoroughly mixing the raw material components shown in Table 3, adding 58 parts of printing paste, 16 parts of printing oil and 14g of water, ball milling for 25 minutes per 100g, and passing through a 400-mesh sieve to prepare glaze material for later use.

[0091] A method for preparing ceramic tiles includes the following steps:

[0092] A. Prepare ceramic powder into ceramic blanks with dimensions of 900*1800mm, dry them and set them aside for use; wet the dried ceramic blanks with water so that the surface of the blanks contains 4-6% moisture.

[0093] B. Prepare the materials according to the proportion of each raw material in the glaze layer. After mixing them thoroughly, add water equal to 40% of the total weight of each raw material in the glaze layer. After ball milling for 25 minutes per 100g, pass the mixture through a 325-mesh sieve to obtain the glaze material. Apply the glaze to the surface of the ceramic body to obtain the glaze layer. Print the preset pattern on the glaze layer.

[0094] C. Apply glaze to the pre-designed pattern using screen printing;

[0095] D. The green body obtained in step C is calcined in a kiln at a high temperature of 1200℃ for 66 minutes to obtain the ceramic brick.

[0096] Example 5

[0097] Preparation of frit:

[0098] (1) Mix the raw materials thoroughly and evenly according to the proportions shown in Table 1;

[0099] (2) Melt the glass at 1400℃ and then quench it with water;

[0100] (3) After the water-quenched molten block is dried and ground, it is soaked in hydrochloric acid for 39 minutes, dried at 140°C, and passed through a 325-mesh sieve to obtain the molten block for later use.

[0101] The chemical composition of the prepared molten ingot is shown in Table 2.

[0102] Prepare raw glaze powder by thoroughly mixing the raw material components shown in Table 3, adding 60 parts of printing paste, 18 parts of printing oil and 15g of water, ball milling for 25 minutes per 100g, and passing through a 400-mesh sieve to prepare glaze material for later use.

[0103] A method for preparing ceramic tiles includes the following steps:

[0104] A. Prepare ceramic powder into ceramic blanks with dimensions of 900*1800mm, dry them and set them aside for use; wet the dried ceramic blanks with water so that the surface of the blanks contains 4-6% moisture.

[0105] B. Prepare the materials according to the proportion of each raw material in the glaze layer. After mixing them thoroughly, add water equal to 40% of the total weight of each raw material in the glaze layer. After ball milling for 25 minutes per 100g, pass the mixture through a 325-mesh sieve to obtain the glaze material. Apply the glaze to the surface of the ceramic body to obtain the glaze layer. Print the preset pattern on the glaze layer.

[0106] C. Apply glaze to the pre-designed pattern using screen printing;

[0107] D. The green body obtained in step C is calcined in a kiln at a high temperature of 1210℃ for 70 minutes to obtain the ceramic brick.

[0108] Table 1. Raw material composition of the fused block (parts by weight)

[0109]

[0110] Table 2 Chemical composition of the fused ingot (mass percentage)

[0111]

[0112] Table 3. Raw material composition of glaze (parts by weight)

[0113]

[0114] Comparative Example 1

[0115] The same preparation steps and parameters as in Example 3 were used, the only difference being that no frit was added in this comparative example.

[0116] Comparative Example 2

[0117] The same preparation steps and parameters as in Example 3 were used, except that the frit was replaced with a conventional frit, and its chemical composition by mass percentage included: SiO2 35%, Al2O3 12%, Fe2O3 0.2%, CaO 3.5%, MgO 5.5%, K2O 9%, Na2O 3%, ZnO 2%, loss on ignition 2%, and the balance being impurities.

[0118] Furthermore, the dimensions of the prepared ceramic green bodies are shown in the table below (Note: These ceramic green body dimensions correspond to the specifications of the corresponding finished bricks):

[0119]

[0120] Comparative Example 3

[0121] The same preparation steps and parameters as in Example 3 were used. The difference was that in this comparative example, the melt was not soaked in hydrochloric acid and then dried in step (3). Instead, the melt was directly dried and ground after being quenched by water.

[0122] The comprehensive performance of the ceramic tiles prepared in Examples 1-5 and Comparative Examples 1-3 was tested using the following methods and standards:

[0123] (1) Glaze pattern effect: The saturation of the color on the surface of ceramic tiles is tested by a colorimeter. The higher the saturation value, the better the color development. Specifically, a saturation value ≥90% indicates an excellent glaze effect; a saturation value of 80-90% indicates a good glaze effect; and a saturation value <80% indicates a poor glaze effect. In actual production processes, a good glaze effect is considered to meet the standards for large-scale production.

[0124] (2) Anti-slip performance: The anti-slip performance is tested by static friction coefficient according to Appendix M of the national standard GB / T4100-2015 "Determination of friction coefficient". The higher the static friction coefficient, the higher the anti-slip performance.

[0125] (3) Abrasion resistance test: The abrasion resistance of the glaze surface of the product was tested using the test method in the national standard GB / T3810.7-2016 "Test methods for ceramic tiles - Part 7: Determination of abrasion resistance of glazed tile surface". The abrasion resistance of ceramic tiles was evaluated by placing abrasive media on the glaze surface and rotating it, and comparing the worn sample with the unworn sample.

[0126] (4) Determination of stain resistance level: The stain resistance of the glaze of the product is tested using the test method of the national standard GB / T3810.14-2016 "Test Methods for Ceramic Tiles Part 14 Determination of Stain Resistance". The stains that are resistant to stains include paste stains, stains that can undergo oxidation reactions, stains that can form films, olive oil, etc. The stain resistance is divided into 1 to 5 levels according to the difficulty of cleaning. The higher the level, the better the stain resistance.

[0127] The test results are shown in Table 4.

[0128] Table 4. Detection results of Examples 1-5 and Comparative Examples 1-3

[0129]

[0130] Table 4 shows that when using conventional frit, the ceramic tiles produced in Comparative Examples 2-1 and 2-2 have complete and flawless surface patterns when the ceramic body size is small (600*600mm, 600*900mm). However, when the ceramic body size is large (900*1800mm), white spots appear on the surface of the ceramic tiles produced in Comparative Example 2-3. This indicates that during screen printing, the glaze adhered due to the excessively large screen size, affecting the depth of the printed pattern and the overall color of the pattern. In Comparative Example 1, when producing large-format ceramic tiles, the frit used in this scheme was not added to the glaze, resulting in ceramic tiles with poor glaze surface, poor wear resistance, and poor stain resistance. In Comparative Example 3, because the frit was not soaked in hydrochloric acid and then dried, the resulting ceramic tiles had slightly poor stain resistance and wear resistance. In contrast, the large-format ceramic tiles produced in Examples 1-5 all have complete surface patterns and high color saturation, while also exhibiting good anti-slip properties, high wear resistance, and good stain resistance. Figure 1 As shown, the ceramic tile prepared in Example 5 has high color saturation, clear texture, and no pattern problems caused by glaze adhesion.

[0131] Comparative Example 4

[0132] This comparative example uses the same preparation steps and parameters as Example 5, the difference being that the raw material composition of the glaze is adjusted as shown in the table below (parts by weight):

[0133]

[0134] The comprehensive performance of the ceramic tiles prepared in Comparative Example 4 was tested, and the test results are shown in Table 5.

[0135] Table 5. Detection results of Comparative Example 4

[0136]

[0137] Table 5 shows that Comparative Example 4 used a glaze formula different from the one described in this scheme, which included the frit described in this scheme. Therefore, it could still produce large-format ceramic tiles using screen printing, with good glaze pattern effects. However, the surface wear resistance of the ceramic tiles was slightly worse, and the color saturation was not optimal. This indicates that the glaze formula used in this scheme, combined with the frit, produces the best overall glaze layer performance, exhibiting excellent anti-slip properties, the best wear resistance and stain resistance, and high color saturation.

[0138] Example 6

[0139] This embodiment uses the same preparation steps and parameters as Example 3, the difference being the amount of water added when preparing the glaze, as shown in the table below:

[0140]

[0141] The comprehensive performance of the ceramic tiles prepared in Example 6 was tested, and the test results are shown in Table 6.

[0142] Table 6. Detection results of Example 6

[0143]

[0144] As shown in Table 6, the amount of water added to the glaze directly affects the viscosity and fluidity of the glaze slurry. The ceramic tiles prepared in Examples 6-3 and 6-4 exhibited the best anti-slip effect, wear resistance, stain resistance, and glaze surface effect, indicating that after adjustment, the overall quality of the glaze layer of the ceramic tiles is optimal when 12-15% water is added to the glaze slurry by its total weight.

[0145] In summary, the frit described in this invention has strong water retention and good screen-forming properties. When using large-format screen printing technology to produce ceramic tiles, the resulting glaze can solve problems such as glaze adhesion or pattern layer adhesion caused by excessively large screens and slow screen lifting. Through optimal selection of glaze raw material components, a glaze layer with the best overall performance can be obtained, exhibiting good anti-slip properties, high wear resistance, good stain resistance, and high color saturation.

[0146] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A glaze, characterized by, The frit comprises the following raw materials in parts by weight: 10-25 parts of potassium feldspar, 15-25 parts of frit, 3-5 parts of dolomite, 10-15 parts of limestone, 1-5 parts of barium carbonate, 10-15 parts of spodumene, 6-10 parts of kaolin, 5-10 parts of zinc oxide and 10-15 parts of strontium carbonate; The frit comprises the following raw materials in parts by weight: 8-10 parts of sodium feldspar, 5-10 parts of strontium carbonate, 5-15 parts of aluminum oxide, 1-6 parts of corundum, 3-6 parts of borax, 10-15 parts of diopside, 5-10 parts of ball clay, 10-15 parts of fluorite, 15-20 parts of quartz, 4-10 parts of dolomite and 1-2 parts of nepheline.

2. The glaze of claim 1, wherein, The preparation method of the frit comprises the following steps: (1) mixing the raw materials according to the ratio; (2) firing the raw materials at 1300-1400 ℃ to melt into a glass liquid, and water quenching; (3) after the water quenching, the frit is dried, ground, soaked in hydrochloric acid for 30-40 min, dried at 120-150 ℃, and sieved to obtain the frit.

3. A method of producing a ceramic tile, characterized by, The use of the glaze as claimed in any one of claims 1-2 comprises the following steps: A, preparing a ceramic body; B, applying a face glaze on the surface of the ceramic body to obtain a face glaze layer; printing a preset pattern on the face glaze layer; C, preparing the glaze as claimed in any one of claims 1-2, and applying the glaze on the preset pattern by silk screen printing; D, after calcination, the ceramic tile is obtained.

4. The method of manufacturing a ceramic tile according to claim 3, wherein In the step C, the preparation method of the glaze comprises the following steps: The raw materials, printing paste, printing oil and water of the glaze are mixed uniformly and ball milled, 100 g of which is ball milled for 25 min, and sieved through a 400-mesh screen to obtain the glaze; wherein the amount of water added is 10-15% of the total weight of the raw materials of the glaze.

5. The method of claim 3, wherein the ceramic tile is prepared by the steps of: preparing a ceramic green sheet; cutting the ceramic green sheet into a predetermined size; and drying the ceramic green sheet. In the step D, the firing temperature of calcination is 1180-1210 ℃, and the firing time is 60-70 min.

6. A ceramic tile, characterized by, The ceramic tile is prepared by the preparation method as claimed in any one of claims 3-5.

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