A tile with a glazed amber decorative effect and a preparation method thereof

Abstract

The present invention discloses a ceramic tile with a glazed amber decorative effect and a preparation method thereof, belonging to the technical field of building ceramic materials. By optimizing the composition and proportion of frit particles and subjecting them to polishing treatment, and interacting with zircon particles, repeated reflection and refraction from multiple angles are achieved, resulting in an excellent "diamond in jade" glazed decorative effect or glazed amber decorative effect. The present invention also optimizes the composition and proportion of the transparent glaze, making the expansion coefficient of the transparent glaze close to that of the zircon particles, effectively reducing the glaze shrinkage generated during high-temperature firing of the transparent glaze and avoiding the generation of glaze microcracks; in addition, by combining inclined spraying of the transparent glaze, the glazing dead angle at the bottom of the crystal nucleus particles is effectively eliminated, and the transparent glaze is applied later, so that the crystal nucleus particles are wrapped in the transparent glaze, making the artistic effect of "diamond in jade" or glazed amber more prominent, and the overall abrasion resistance, stain resistance and corrosion resistance of the ceramic tile can meet the use requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of building ceramic materials, and in particular, to a ceramic tile with an enamel amber decorative effect and a preparation method thereof. Background Art

[0002] Enamel decoration has always been the focus of technology and product innovation in the ceramic tile industry. With the improvement of living quality, people's pursuit of home decoration style tends to return to nature. Therefore, in recent years, the proportion of ceramic tiles imitating the effect of natural stone has been increasing. There are many process methods to reflect the surface effect of natural stone, mainly including two process directions: the first is to imitate the pattern texture of stone through printing technology (including overglaze printing, underglaze printing, etc.); the second is to reflect the three-dimensional texture of stone through uneven surfaces (including uneven die forming, uneven enamel printing, semi-polishing process, etc.). However, these two process directions are limited by the relatively thin enamel layer of ceramic tiles, resulting in poor three-dimensional sense.

[0003] In the prior art, a certain decorative effect is achieved by applying ceramic glaze. However, traditional ceramic glaze (transparent glaze) is generally composed of a single glass melt, which can only produce reflection or refraction on the surface of the glaze layer and the interface between the glaze and the body, and cannot perform repeated reflection and refraction from multiple interfaces and angles. Naturally, it is impossible to produce a luminous sphere, and it is impossible to create an "emerald in diamond" enamel decorative effect or an enamel amber decorative effect. For example, the patent with the Chinese patent application number CN201911300688.4 discloses an imitation transparent amber ceramic tile and a preparation method thereof. Its structure includes a body layer, a surface glaze layer, a first pattern layer, a microcrystalline layer, a second pattern layer, a transparent glaze layer, and a liquid glass layer from bottom to top; the microcrystalline layer is fired from colored transparent microcrystalline glass powder, and the colored transparent microcrystalline glass powder. In addition, the surface glaze in the prior art will produce volume (linear) shrinkage after being fired and solidified at high temperature. If the shrinkage of the glaze layer is greater than the shrinkage of the particles, tensile stress will be generated in the surface glaze layer. When the tensile stress exceeds the yield value of the surface glaze layer, cracks will appear in the surface glaze layer, thereby affecting the quality of the product. Therefore, there are still technical problems to be solved urgently in the prior art. Summary of the Invention

[0004] Based on this, in order to solve one of the above problems, the present invention provides a ceramic tile with an enamel amber decorative effect and a preparation method thereof. The specific technical solutions are as follows:

[0005] A ceramic tile with an enamel amber decorative effect, the structure of the ceramic tile includes a body layer, a bottom glaze layer, a surface glaze layer, a pattern layer, a crystal nucleus particle layer, and a transparent glaze layer from bottom to top;

[0006] Among them, the crystal nucleus particles used in the crystal nucleus particle layer include the following preparation raw materials in parts by weight: 80 parts to 95 parts of zircon sand particles and 5 parts to 20 parts of frit particles, and the frit particles need to be polished before use;

[0007] The frit particles comprise the following components by mass percentage: 10.0% - 20.0% SiO2, 5.0% - 10.0% Al2O3, 15.0% - 17.0% B2O3, 15.0% - 17.0% Y2O3, 1.0% - 3.0% ZrO2, 5.0% - 6.0% Nb2O5, 1.0% - 2.0% CeO2, 8.0% - 12.0% K2O, 5.0% - 9.0% Na2O, 5.0% - 7.0% CaO, 3.0% - 5.0% MgO, 0.1% - 0.5% BaO, 0.1% - 0.5% ZnO, 1.0% - 5.0% loss on ignition;

[0008] The transparent glaze material used in the transparent glaze layer comprises the following raw materials for preparation by weight ratio: 85 - 90 parts of transparent frit, 8 - 12 parts of kaolin, 0.1 - 0.25 part of additive;

[0009] The transparent frit comprises the following components by mass percentage: 50.0% - 55.0% SiO2, 5.0% - 6.0% Al2O3, 5.0% - 6.0% B2O3, 5.0% - 8.0% ZnO, 5.0% - 6.0% K2O, 1.0% - 2.0% Na2O, 3.0% - 5.0% LiO2, 10.0% - 15.0% CaO, 1.0% - 2.0% MgO, 1.0% - 2.0% BaO, 1.0% - 5.0% loss on ignition.

[0010] Further, the refractive index of the zircon particles is 1.9 - 2.0, and the refractive index of the frit particles is 1.6 - 1.7;

[0011] The melting temperature of the zircon particles is 2340°C - 2550°C, and the melting temperature of the frit particles is 1280°C - 1300°C.

[0012] Further, the process of the polishing treatment is as follows: the frit particle raw materials are screened by a rectangular grid sieve for shape, then placed in a V - type mixer, zirconia beads are added according to a material - to - ball ratio of 1:22, and processed at a cylinder rotation speed of 10 r / min - 20 r / min, and then sieved to obtain frit particles with an average particle size of 0.10 mm - 0.20 mm.

[0013] Further, the additive is at least one of a dispersant, an antifoaming agent, a flux, a suspending agent, a thickening agent, an anti - cracking agent, an antibacterial agent, and an antistatic agent.

[0014] Further, the refractive index of the transparent glaze material is 1.4 - 1.5.

[0015] In addition, the present invention also provides a method for preparing a tile with a glazed amber decorative effect, and the preparation method includes the following steps:

[0016] Apply a base glaze on the green body layer, and after drying, form a base glaze layer;

[0017] Apply a surface glaze on the base glaze layer, and after drying, form a surface glaze layer;

[0018] Spray glue on the surface glaze layer to print a pattern, and form a pattern layer;

[0019] Apply crystal nucleus particles on the pattern layer, suck out the excess crystal nucleus particles, spray glue again for fixation, and after drying treatment, form a crystal nucleus particle layer;

[0020] Use a spray gun to spray transparent glaze obliquely on the crystal nucleus particle layer, then apply transparent glaze again, and after drying treatment, fire it to obtain a tile with a glazed amber decorative effect.

[0021] Further, the expansion coefficient of the transparent glaze at 25°C to 500°C is (4.5 to 4.9)×10 -6 / °C.

[0022] Further, when spraying transparent glaze obliquely, adjust the density of the transparent glaze to (1.46 to 1.48) g / cm 3 , the water content of the transparent glaze is 48% to 50%, and the glaze application amount is (20 to 25) g / m 2 .

[0023] Further, when applying transparent glaze, adjust the density of the transparent glaze to (1.80 to 1.82) g / cm 3 , the water content of the transparent glaze is 30% to 32%, and the glaze application amount is (500 to 510) g / m 2 .

[0024] Further, the firing temperature is 1200°C to 1220°C.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. By optimizing the composition and ratio of the frit particles and through polishing treatment, the present invention has a more significant optical reflection effect. Interacting with zircon particles, it can also perform repeated reflection and refraction from multiple angles and emit light in a highly transparent transparent glaze layer, achieving a "diamond in jade" glazed decorative effect or a glazed amber decorative effect, which is artistic and has a strong three-dimensional sense.

[0027] 2. By optimizing the composition and ratio of the transparent glaze, while ensuring that the expansion coefficient of the transparent glaze is within the range of (4.5 to 4.9)×10 -6 / °C, so that its expansion coefficient is close to that of zircon particles (4.5×10 -6 / °C), which can effectively reduce the glaze surface shrinkage during high-temperature firing of the transparent glaze, avoiding the generation of microcracks on the glaze surface; in addition, combined with the inclined-angle spraying of the transparent glaze in the process, it can eliminate the glazing dead angle at the bottom of the crystal nucleus particles, promote exhaust gas, and spray the transparent glaze again, so that the crystal nucleus particles are completely wrapped in the transparent glaze. After firing, it further ensures the glaze surface decoration effect of "diamond in jade" or the glaze surface amber decoration effect.

[0028] 3. The overall compatibility of the ceramic tiles of the present invention is excellent. While ensuring its artistic effect, its wear resistance, stain resistance, and corrosion resistance can all meet the usage requirements. Brief Description of the Drawings

[0029] Figure 1 It is a schematic diagram of the glaze surface of the ceramic tile sample with the glaze surface amber decoration effect prepared in Example 1; Figure 2 It is a schematic diagram of the glaze surface of the ceramic tile sample with the glaze surface amber decoration effect prepared in Example 2; Figure 3 It is a schematic diagram of the glaze surface of the ceramic tile sample with the glaze surface amber decoration effect prepared in Example 3;

[0030] Figure 4 In it, a is the frit particles without polishing treatment, Figure 4 In it, b is the frit particles after polishing treatment;

[0031] Figure 5 It is a schematic diagram of the process of inclined-angle spraying of the transparent glaze in Example 1;

[0032] Figure 6 It is a schematic diagram of the structure of the ceramic tile with the glaze surface amber decoration effect prepared in Example 1;

[0033] Figure 7 It is a schematic diagram of the effect when the inclined-angle spraying of the transparent glaze is not used when preparing the ceramic tile with the glaze surface amber decoration effect in Comparative Example 8.

[0034] Description of the Reference Numerals in the Drawings:

[0035] 1. Spray gun; 2. Crystal nucleus particles; 3. Green body layer; 4. Base glaze layer; 5. Top glaze layer; 6. Pattern layer; 7. Crystal nucleus particle layer; 8. Transparent glaze layer; 9. Air bubbles; 10. Glazing dead angle. Detailed Embodiments

[0036] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following further elaborates on the present invention in combination with its embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the protection scope of the present invention.

[0037] A tile with a glazed amber decorative effect, the structure of the tile from bottom to top includes a body layer, a base glaze layer, a surface glaze layer, a pattern layer, a crystal nucleus particle layer, and a transparent glaze layer;

[0038] Among them, the crystal nucleus particles used in the crystal nucleus particle layer include the following raw materials for preparation in parts by weight: 80 parts to 95 parts of zircon particles and 5 parts to 20 parts of frit particles, and the frit particles need to be polished before use;

[0039] The frit particles include the following components in mass percentage: 10.0% to 20.0% SiO2, 5.0% to 10.0% Al2O3, 15.0% to 17.0% B2O3, 15.0% to 17.0% Y2O3, 1.0% to 3.0% ZrO2, 5.0% to 6.0% Nb2O5, 1.0% to 2.0% CeO2, 8.0% to 12.0% K2O, 5.0% to 9.0% Na2O, 5.0% to 7.0% CaO, 3.0% to 5.0% MgO, 0.1% to 0.5% BaO, 0.1% to 0.5% ZnO, 1.0% to 5.0% loss on ignition;

[0040] The transparent glaze used in the transparent glaze layer includes the following raw materials for preparation in parts by weight: 85 parts to 90 parts of transparent frit, 8 parts to 12 parts of kaolin, and 0.1 part to 0.25 part of additive;

[0041] The transparent frit includes the following components in mass percentage: 50.0% to 55.0% SiO2, 5.0% to 6.0% Al2O3, 5.0% to 6.0% B2O3, 5.0% to 8.0% ZnO, 5.0% to 6.0% K2O, 1.0% to 2.0% Na2O, 3.0% to 5.0% LiO2, 10.0% to 15.0% CaO, 1.0% to 2.0% MgO, 1.0% to 2.0% BaO, 1.0% to 5.0% loss on ignition.

[0042] In some embodiments, the refractive index of the zircon particles is 1.9 to 2.0, and the refractive index of the frit particles is 1.6 to 1.7.

[0043] In some embodiments, the melting temperature of the zircon particles is 2340 °C to 2550 °C, and the melting temperature of the frit particles is 1280 °C to 1300 °C.

[0044] In some embodiments, the zircon particles have an island structure of the tetragonal crystal system.

[0045] In some embodiments, the average particle size of the zircon particles is 0.08 mm to 0.30 mm.

[0046] In some embodiments, the expansion coefficient of the zircon particles is 4.5×10 -6 / °C.

[0047] In some embodiments, the addition amount of the crystal nucleus particles is (100~150) g / m 2 .

[0048] In some embodiments, the process of the polishing treatment is as follows: using a rectangular grid sieve to screen the shape of the frit particle raw materials, then placing them in a V-type mixer, adding zirconia beads according to a material-to-ball ratio of 1:22, and treating them at a cylinder rotation speed of 10 r / min to 20 r / min, and then sieving to obtain frit particles with an average particle size of 0.10 mm to 0.20 mm. After the frit particles are mechanically crushed in a common way, most of them show irregular shapes, and even show a shape with three sharp corners and eight angles, resulting in poor optical reflection effect, and also leading to application effects, making the glaze decoration effect or glaze amber decoration effect of "diamond in jade" not good.

[0049] In some embodiments, the additive is at least one of a dispersant, an antifoaming agent, a flux, a suspending agent, a thickening agent, an anti-cracking agent, an antibacterial agent, and an antistatic agent.

[0050] In some embodiments, the antifoaming agent is at least one of polydimethylsiloxane, calcium carbonate, and barium carbonate.

[0051] In some embodiments, the refractive index of the transparent glaze is 1.4 to 1.5.

[0052] In addition, the present invention also provides a method for preparing a ceramic tile with a glaze amber decoration effect, and the preparation method includes the following steps:

[0053] Applying a base glaze on the green body layer, and after drying, forming a base glaze layer;

[0054] Applying a top glaze on the base glaze layer, and after drying, forming a top glaze layer;

[0055] Spraying glue on the top glaze layer to print a pattern, forming a pattern layer;

[0056] Applying crystal nucleus particles on the pattern layer, sucking out the excess crystal nucleus particles, spraying glue again for fixation, and after drying treatment, forming a crystal nucleus particle layer;

[0057] Spraying the transparent glaze obliquely on the crystal nucleus particle layer by using a spray gun, then applying the transparent glaze again, and after drying treatment, firing to obtain a ceramic tile with a glaze amber decoration effect.

[0058] In some embodiments, a green body with an expansion coefficient of 5.1×10 -6 / °C is selected for the green body layer.

[0059] In some embodiments, the expansion coefficient of the transparent glaze at 25°C to 500°C is (4.5 to 4.9) × 10 -6 / °C. The expansion coefficient is close to that of the crystal nucleus particles, which can reduce the tensile stress and avoid microcracks on the glaze surface.

[0060] In some embodiments, the preparation method of the transparent glaze is as follows: crush the transparent frit through an 80-100 mesh sieve, then add kaolin, additives and an appropriate amount of water, carry out wet ball milling for 2h to 4h, and let it stand for aging for 12h to 24h to obtain the transparent glaze.

[0061] In some embodiments, when spraying the transparent glaze at an inclined angle, the density of the transparent glaze is adjusted to (1.46 to 1.48) g / cm 3 , the water content of the transparent glaze is 48% to 50%, and the glazing amount is (20 to 25) g / m 2 .

[0062] In some embodiments, when spraying the transparent glaze at an inclined angle, the fluidity of the transparent glaze is 10S to 11S.

[0063] In some embodiments, when applying the transparent glaze by pouring, the density of the transparent glaze is adjusted to (1.80 to 1.82) g / cm 3 , the water content of the transparent glaze is 30% to 32%, and the glazing amount is (500 to 510) g / m 2 .

[0064] In some embodiments, when applying the transparent glaze by pouring, the fluidity of the transparent glaze is 35S to 40S.

[0065] In some embodiments, the melting temperature of the transparent glaze is 1190°C to 1205°C.

[0066] In some embodiments, the firing temperature is 1200°C to 1220°C.

[0067] In some embodiments, the firing cycle is 60min to 110min.

[0068] In some embodiments, the green body layer, the base glaze layer and the top glaze layer are obtained by conventional existing technologies, which will not be elaborated here.

[0069] The overall compatibility of the ceramic tiles prepared by the above scheme is excellent. While having the glaze surface decoration effect of "diamond in jade" or the glaze surface amber decoration effect, the wear resistance, stain resistance and corrosion resistance can all meet the usage requirements.

[0070] The following is further described in conjunction with specific embodiments. Example 1:

[0071] A preparation method of a tile with an enameled amber decorative effect, comprising the following steps:

[0072] S1: Select a green body with a coefficient of thermal expansion of 5.1×10 -6 / °C, then apply a base glaze on the green body layer, and after drying, form a base glaze layer;

[0073] S2: Apply a surface glaze on the base glaze layer, and after drying, form a surface glaze layer;

[0074] S3: Spray glue on the surface glaze layer to print a pattern, forming a pattern layer;

[0075] S4: Apply crystal nucleus particles on the pattern layer with an addition amount of 120 g / m 2 , suck out the excess crystal nucleus particles, spray glue again for fixation, and after drying treatment, form a crystal nucleus particle layer; The crystal nucleus particles include the following preparation raw materials in parts by weight: 85 parts of zircon sand particles and 15 parts of frit particles, and the frit particles need to be polished before use;

[0076] The frit particles include the following components in mass percentage: 15.0% SiO2, 7.0% Al2O3, 16.5% B2O3, 16.5% Y2O3, 2.5% ZrO2, 6.0% Nb2O5, 1.0% CeO2, 10.0% K2O, 8.5% Na2O, 6.5% CaO, 4.5% MgO, 0.5% BaO, 0.5% ZnO, 5.0% loss on ignition;

[0077] The process of the polishing treatment is as follows: Use a rectangular grid sieve to screen the shape of the frit particle raw materials, then place them in a V-type mixer, add zirconia beads according to a material-to-ball ratio of 1:22, and process at a cylinder rotation speed of 15 r / min, and sieve to obtain frit particles with an average particle size of 0.20 mm;

[0078] S5: Use a spray gun to spray the transparent glaze obliquely on the crystal nucleus particle layer, and then apply the transparent glaze again, and perform drying treatment;

[0079] By weight ratio, 90.0 parts of transparent frit are crushed and sieved through a 100-mesh sieve, then 10 parts of kaolin, 0.25 part of polydimethylsiloxane and an appropriate amount of water are added, and wet ball milling is carried out for 3 h, and static aging is carried out for 20 h to obtain the transparent glaze; When spraying the transparent glaze obliquely, adjust the density of the transparent glaze to 1.47 g / cm 3 , the fluidity is 11 S, and the glaze application amount is 25 g / m 2 ; When applying the transparent glaze, adjust the density of the transparent glaze to 1.82 g / cm 3 , the fluidity is 38 S, and the glaze application amount is 500 g / m 2 ;

[0080] The transparent frit comprises the following components by mass percentage: 55.0% SiO2, 6.0% Al2O3, 5.5% B2O3, 7.0% ZnO, 6.0% K2O, 1.5% Na2O, 3.0% LiO2, 12.0% CaO, 1.0% MgO, 2.0% BaO, 1% loss on ignition;

[0081] The expansion coefficient of the transparent glaze reaches 4.8×10 -6 / °C in the range of 25°C to 500°C;

[0082] S6: Firing at a firing temperature of 1220°C for a firing cycle of 80 min to obtain a tile with an amber decorative effect on the glaze surface. Example 2:

[0083] A method for preparing a tile with an amber decorative effect on the glaze surface, comprising the following steps:

[0084] S1: Select a green body with an expansion coefficient of 5.1×10 -6 / °C, then apply a base glaze on the green body layer, and after drying, form a base glaze layer;

[0085] S2: Apply a top glaze on the base glaze layer, and after drying, form a top glaze layer;

[0086] S3: Spray glue on the top glaze layer to print a pattern and form a pattern layer;

[0087] S4: Apply crystal nucleus particles on the pattern layer with an addition amount of 120 g / m 2 , suck out the excess crystal nucleus particles, spray glue again for fixation, and after drying treatment, form a crystal nucleus particle layer; The crystal nucleus particles comprise the following preparation raw materials by weight ratio: 90 parts of zircon sand particles and 10 parts of frit particles, and the frit particles need to be polished before use;

[0088] The frit particles comprise the following components by mass percentage: 16.0% SiO2, 6.0% Al2O3, 16.5% B2O3, 16.5% Y2O3, 2.5% ZrO2, 5.5% Nb2O5, 2.0% CeO2, 10.5% K2O, 8.5% Na2O, 5% CaO, 5% MgO, 0.5% BaO, 0.5% ZnO, 5% loss on ignition;

[0089] The process of the polishing treatment is as follows: Use a rectangular grid sieve to screen the shape of the frit particle raw materials, then place them in a V-type mixer, add zirconia beads according to a material-to-ball ratio of 1:22, and process at a cylinder rotation speed of 15 r / min, and then sieve to obtain frit particles with an average particle size of 0.20 mm;

[0090] S5: Spray the transparent glaze obliquely on the nucleating particle layer using a spray gun, then apply the transparent glaze again, and perform drying treatment;

[0091] By weight, crush 88 parts of transparent frit through a 100-mesh sieve, then add 12 parts of kaolin, 0.25 part of polydimethylsiloxane, and an appropriate amount of water, and perform wet ball milling for 3 h, then let it stand and age for 24 h to obtain the transparent glaze; when spraying the transparent glaze obliquely, adjust the density of the transparent glaze to 1.48 g / cm 3 , the fluidity is 10 S, and the glaze application amount is 24 g / m 2 ; when applying the transparent glaze, adjust the density of the transparent glaze to 1.81 g / cm 3 , the fluidity is 37 S, and the glaze application amount is 500 g / m 2 ;

[0092] The transparent frit includes the following components by mass percentage: 54.5% SiO2, 5.5% Al2O3, 6.0% B2O3, 7.5% ZnO, 5.5% K2O, 1.5% Na2O, 3.5% LiO2, 12.0% CaO, 1.5% MgO, 1.5% BaO, 1% loss on ignition;

[0093] The expansion coefficient of the transparent glaze reaches 4.6×10 -6 / °C from 25°C to 500°C;

[0094] S6: Fire at a firing temperature of 1220°C and a firing cycle of 80 min to obtain a tile with a glazed amber decorative effect. Example 3:

[0095] A method for preparing a tile with a glazed amber decorative effect, comprising the following steps:

[0096] S1: Select a green body with an expansion coefficient of 5.1×10 -6 / °C, then apply the base glaze on the green body layer, and after drying, form a base glaze layer;

[0097] S2: Apply the top glaze on the base glaze layer, and after drying, form a top glaze layer;

[0098] S3: Spray glue on the top glaze layer to print a pattern, forming a pattern layer;

[0099] S4: Apply nucleating particles on the pattern layer with an addition amount of 120 g / m 2 , suck out the excess nucleating particles, spray glue again to fix, and after drying treatment, form a nucleating particle layer; the nucleating particles include the following preparation raw materials by mass percentage: 88 parts of zircon sand particles and 12 parts of frit particles, and the frit particles need to be polished before use;

[0100] The frit particles include the following components by mass percentage: 15.0% SiO2, 6.5% Al2O3, 16.5% B2O3, 15.5% Y2O3, 2.5% ZrO2, 6.0% Nb2O5, 1.5% CeO2, 11.0% K2O, 9% Na2O, 6.5% CaO, 4.0% MgO, 0.5% BaO, 0.5% ZnO, 5% loss on ignition;

[0101] The process of the polishing treatment is as follows: The frit particle raw materials are screened by a rectangular grid sieve for shape, then placed in a V-type mixer, zirconia beads are added according to a material-to-ball ratio of 1:22, and the cylinder is rotated at a speed of 15 r / min for treatment, and then sieved to obtain frit particles with an average particle size of 0.20 mm;

[0102] S5: Spray the transparent glaze obliquely on the crystal nucleus particle layer by means of a spray gun, and then apply the transparent glaze, followed by drying treatment;

[0103] By weight ratio, 89 parts of the transparent frit are crushed and sieved through a 100-mesh sieve, then 11 parts of kaolin, 0.25 part of polydimethylsiloxane and an appropriate amount of water are added, and wet ball milling treatment is carried out for 4 h, and then left to age for 24 h to obtain the transparent glaze; when spraying the transparent glaze obliquely, the density of the transparent glaze is adjusted to 1.46 g / cm 3 , the fluidity is 11 S, and the glaze application amount is 25 g / m 2 ; when applying the transparent glaze, the density of the transparent glaze is adjusted to 1.80 g / cm 3 , the fluidity is 40 S, and the glaze application amount is 500 g / m 2 ;

[0104] The transparent frit includes the following components by mass percentage: 54.0% SiO2, 5.5% Al2O3, 6.0% B2O3, 7.5% ZnO, 6.0% K2O, 1.0% Na2O, 3.5% LiO2, 13.0% CaO, 1.0% MgO, 1.5% BaO, 1% loss on ignition;

[0105] The expansion coefficient of the transparent glaze reaches 4.7×10 -6 / °C;

[0106] S6: Firing is carried out at a firing temperature of 1210 °C and a firing cycle of 80 min to obtain a tile with a glazed amber decorative effect.

[0107] Comparative Example 1:

[0108] Compared with Example 1, the crystal nucleus particle layer in Comparative Example 1 uses a single zircon sand particle, and the others are the same as in Example 1.

[0109] Comparative Example 2:

[0110] Compared with Example 1, the crystal nucleus particle layer in Comparative Example 2 uses a single frit particle, and the others are the same as those in Example 1.

[0111] Comparative Example 3:

[0112] Compared with Example 1, the frit particles used in Comparative Example 3 are not polished, and the others are the same as those in Example 1.

[0113] Comparative Example 4:

[0114] Compared with Example 1, common glass microspheres are used to replace the frit particles in Comparative Example 4, and the others are the same as those in Example 1.

[0115] Comparative Example 5:

[0116] Compared with Example 1, the chemical composition and ingredient ratio of the transparent frit in the transparent surface glaze in Comparative Example 5 are different, and the expansion coefficient of the transparent glaze prepared in Comparative Example 5 reaches 5.6×10 -6 / °C, and the others are the same as those in Example 1.

[0117] The chemical composition of the transparent frit in Comparative Example 5 is as follows:

[0118] The transparent frit includes the following components by mass percentage: 59.0% SiO2, 6.0% Al2O3, 1.5% B2O3, 7.0% ZnO, 6.0% K2O, 1.5% Na2O, 3.0% LiO2, 12.0% CaO, 1.0% MgO, 2.0% BaO, 1% loss on ignition.

[0119] Comparative Example 6:

[0120] Compared with Example 1, the chemical composition and ingredient ratio of the transparent frit in the transparent surface glaze in Comparative Example 6 are different, and the expansion coefficient of the transparent glaze prepared in Comparative Example 6 reaches 5.4×10 -6 / °C, and the others are the same as those in Example 1.

[0121] The chemical composition of the transparent frit in Comparative Example 6 is as follows:

[0122] The transparent frit includes the following components by mass percentage: 57.0% SiO2, 6.0% Al2O3, 5.5% B2O3, 7.0% ZnO, 6.0% K2O, 1.5% Na2O, 1.0% LiO2, 12.0% CaO, 1.0% MgO, 2.0% BaO, 1% loss on ignition.

[0123] Comparative Example 7:

[0124] Compared with Example 1, the chemical composition and the component ratio of the transparent frit of the transparent surface glaze in Comparative Example 7 are different, and the expansion coefficient of the transparent glaze prepared in Comparative Example 7 reaches 5.8×10 -6 / ℃ at 25°C to 500°C, and the others are the same as those in Example 1.

[0125] The chemical composition of the transparent frit in Comparative Example 7 is as follows:

[0126] The transparent frit comprises the following components by mass percentage: 59.0% SiO2, 8.0% Al2O3, 5.5% B2O3, 7.0% ZnO, 6.0% K2O, 1.5% Na2O, 3.0% LiO2, 6.0% CaO, 1.0% MgO, 2.0% BaO, 1% loss on ignition.

[0127] Comparative Example 8:

[0128] Compared with Example 1, the step of spraying the transparent glaze at an inclined angle is not carried out in Comparative Example 8, and the others are the same as those in Example 1.

[0129] Performance tests were carried out on the glazed amber decorative effect ceramic tile samples prepared in Examples 1 to 3 and the glazed amber decorative effect ceramic tile comparison samples prepared in Comparative Examples 1 to 8, and the results were recorded as shown in Table 1 below. Among them, the apparent effect of the glaze surface and the quality of the glaze surface were observed by the naked eye of those skilled in the art, and a microscope or magnifying glass was used for assistance when necessary; the abrasion resistance, Mohs hardness, stain resistance, and chemical corrosion resistance referred to GB / T 39156-2020.

[0130] Table 1: Performance test results

[0131] Group Items Appearance Quality Wear Resistance / r Hardness Stain Resistance / Level Chemical Resistance / Level Example 1 The glaze surface is smooth, without bubbles and cracks, has multi-angle twinkling, obvious luminescence, and excellent amber decoration effect. 2100 7 5 GA Example 2 The glaze surface is smooth, without bubbles and cracks, has multi-angle twinkling, obvious luminescence, and excellent amber decoration effect. 2100 7 5 GA Example 3 The glaze surface is smooth, without bubbles and cracks, has multi-angle twinkling, obvious luminescence, and excellent amber decoration effect. 2100 7 5 GA Comparative Example 1 The glaze surface is smooth, without bubbles and cracks, the twinkling and luminescence effects are average, and the amber decoration effect is worse than that of Example 1. 2100 7 5 GA Comparative Example 2 The glaze surface is smooth, without bubbles and cracks, the twinkling and luminescence effects are average, and the amber decoration effect is worse than that of Example 1. 2100 7 5 GA Comparative Example 3 The glaze surface has bubbles and cracks, the twinkling and luminescence effects are average, and the amber decoration effect is worse than that of Example 1. 2000 6 3 GB Comparative Example 4 The glaze surface has no bubbles and cracks, the twinkling and luminescence effects are average, and the amber decoration effect is worse than that of Example 1. 2100 7 5 GA Comparative Example 5 The glaze surface has no bubbles but has cracks, the twinkling and luminescence effects are average, and the amber decoration effect is worse than that of Example 1. 2000 6 3 GB Comparative Example 6 The glaze surface has no bubbles but has cracks, the twinkling and luminescence effects are average, and the amber decoration effect is worse than that of Example 1. 2000 6 3 GB Comparative Example 7 The glaze surface has no bubbles but has cracks, the twinkling and luminescence effects are average, and the amber decoration effect is worse than that of Example 1. 2000 6 3 GB Comparative Example 8 The glaze surface has bubbles and cracks, the twinkling and luminescence effects are average, and the amber decoration effect is worse than that of Example 1. 2000 6 3 GB

[0132] It can be seen from the data analysis in Table 1 that by using zircon particles and frit particles in combination as the raw materials of the crystal nucleus particle layer, the present invention can have an optical refraction effect from multiple angles while ensuring the apparent quality of the glaze surface, showing more excellent scintillation, "diamond in jade" or glazed amber decorative effect. In addition, after optimizing the composition and component ratio of the transparent surface glaze, the expansion coefficient of the transparent glaze is close to that of the zircon particles, which can effectively avoid the problems of bubbles and cracks occurring during high-temperature firing. While ensuring the quality of the glaze surface, it also endows the ceramic tile with excellent abrasion resistance, hardness, stain resistance, and chemical corrosion resistance.

[0133] In addition, in combination with Figures 1 - 7 the technical solution of the present application is further described as follows:

[0134] Figure 1 It is a schematic diagram of the glaze surface of the glazed amber decorative effect ceramic tile sample prepared in Example 1; Figure 2Schematic diagram of the glaze surface of the tile sample with the glaze surface amber decoration effect prepared in Example 2; Figure 3 Schematic diagram of the glaze surface of the tile sample with the glaze surface amber decoration effect prepared in Example 3. From Figures 1 - 3 Analysis shows that the zircon particles and frit particles used in the tiles prepared by the present invention have excellent refractive indices and can form an optical refraction effect at multiple angles, with high artistry.

[0135] Figure 4 In [diagram], a is the frit particle without polishing treatment, Figure 4 In [diagram], b is the frit particle after polishing treatment. From Figure 4 It can be seen that the polishing treatment can grind off the three-pointed and eight-angled parts on the surface of the glass particles, so as to obtain short-columnar and nearly spherical frit particles, which have more optical refraction surfaces and reduce the glazing dead angles between the frit particles and the transparent glaze, helping to improve the glaze quality. Therefore, through the polishing treatment process of the present invention, it can help improve the scintillation and light-emitting effects of the tiles, making the "diamond in jade" or the glaze surface amber decoration effect more excellent.

[0136] Figure 5 Schematic diagram of the process of spraying transparent glaze at an inclination angle in Example 1. From Figure 5 It can be clearly seen that spraying transparent glaze at an inclination angle can reduce the glazing dead angles at the bottom of the crystal nucleus particles, helping to reduce the problems of glaze surface bubbles and cracks, and thus ensuring the glaze surface quality.

[0137] Figure 6 Schematic diagram of the structure of the tile with the glaze surface amber decoration effect prepared in Example 1. From Figure 6 It can be seen that the structure of the tile with the glaze surface amber decoration effect prepared in Example 1 includes a body layer, a bottom glaze layer, a top glaze layer, a pattern layer, a crystal nucleus particle layer, and a transparent glaze layer from bottom to top, and the crystal nucleus particles can be wrapped by the transparent glaze.

[0138] Figure 7 Effect schematic diagram when preparing the tile with the glaze surface amber decoration effect in Comparative Example 8 without using the inclined spraying of transparent glaze. From Figure 7 It can be seen that without using the inclined spraying process, the exhaust of the body layer is blocked, affecting the discharge of bubbles 9. At the same time, glazing dead angles 10 also appear, ultimately resulting in bubbles and cracks on the glaze surface, and the places where the transparent top glaze is not applied will also affect the final scintillation, light-emitting effect, and amber decoration effect.

[0139] In summary, the present invention optimizes the composition and proportion of the crystal nucleus particle layer, optimizes the composition and proportion of the transparent glaze, and also optimizes the application method of the transparent glaze, making the overall compatibility and adaptability of the tile more excellent, and thus obtaining tiles with excellent quality and the glaze surface amber decoration effect, with high ornamental and practical value.

[0140] It should be noted here that the description of the above embodiments is used to help understand the present invention, but does not constitute a limitation to the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Claims

1. A glazed tile with an amber decorative effect, characterized in that, The structure of the tile from bottom to top includes a body layer, an underglaze layer, a top glaze layer, a pattern layer, a crystal nucleus particle layer, and a transparent glaze layer; Among them, the crystal nucleus particles used in the crystal nucleus particle layer include the following raw materials for preparation in parts by weight: 80 parts to 95 parts of zircon particles and 5 parts to 20 parts of frit particles, and the frit particles need to be polished before use; The frit particles include the following components in mass percentage: 10.0% to 20.0% SiO2, 5.0% to 10.0% Al2O3, 15.0% to 17.0% B2O3, 15.0% to 17.0% Y2O3, 1.0% to 3.0% ZrO2, 5.0% to 6.0% Nb2O5, 1.0% to 2.0% CeO2, 8.0% to 12.0% K2O, 5.0% to 9.0% Na2O, 5.0% to 7.0% CaO, 3.0% to 5.0% MgO, 0.1% to 0.5% BaO, 0.1% to 0.5% ZnO, 1.0% to 5.0% loss on ignition; The transparent glaze used in the transparent glaze layer includes the following raw materials for preparation in parts by weight: 85 parts to 90 parts of transparent frit, 8 parts to 12 parts of kaolin, and 0.1 part to 0.25 part of additive; The transparent frit includes the following components in mass percentage: 50.0% to 55.0% SiO2, 5.0% to 6.0% Al2O3, 5.0% to 6.0% B2O3, 5.0% to 8.0% ZnO, 5.0% to 6.0% K2O, 1.0% to 2.0% Na2O, 3.0% to 5.0% LiO2, 10.0% to 15.0% CaO, 1.0% to 2.0% MgO, 1.0% to 2.0% BaO, 1.0% to 5.0% loss on ignition; A spray gun is used to spray the transparent glaze obliquely on the crystal nucleus particle layer, and then the transparent glaze is applied.

2. The tile according to claim 1, wherein The refractive index of the zircon particles is 1.9 to 2.0, and the refractive index of the frit particles is 1.6 to 1.7; The melting temperature of the zircon particles is 2340 °C to 2550 °C, and the melting temperature of the frit particles is 1280 °C to 1300 °C.

3. The tile according to claim 1, characterized in that, The process of the polishing treatment is as follows: The frit particle raw materials are screened by a rectangular grid sieve, and then placed in a V-type mixer. Zirconia beads are added according to a material-ball ratio of 1:22, and the cylinder is rotated at a speed of 10 r / min to 20 r / min for treatment, and then sieved to obtain frit particles with an average particle size of 0.10 mm to 0.20 mm.

4. The tile according to claim 1, characterized in that, The additive is at least one of a dispersant, an antifoaming agent, a flux, a suspending agent, a thickening agent, an anti-cracking agent, an antibacterial agent, and an antistatic agent.

5. The tile according to claim 1, wherein The refractive index of the transparent glaze is 1.4 to 1.

5.

6. A preparation method of a tile with an enameled amber decorative effect, characterized in that, The preparation method is used to prepare the tile with the glazed amber decorative effect as described in any one of claims 1 to 5, and the preparation method includes the following steps: Apply the underglaze on the body layer, and after drying, form the underglaze layer; Apply the top glaze on the underglaze layer, and after drying, form the top glaze layer; Spray glue on the top glaze layer to print the pattern, and form the pattern layer; Dispense crystal nucleus particles on the pattern layer, suck out the excess crystal nucleus particles, spray glue again for fixation, and after drying treatment, a crystal nucleus particle layer is formed; Use a spray gun to spray transparent glaze obliquely on the crystal nucleus particle layer, then dispense transparent glaze again, and after drying treatment, fire it to obtain a ceramic tile with a glazed amber decorative effect.

7. The preparation method according to claim 6, characterized in that, The expansion coefficient of the transparent glaze at 25°C to 500°C is (4.5 to 4.9)×10 -6 / °C.

8. The preparation method according to claim 6, characterized in that, When spraying the transparent glaze at an inclination angle, the density of the transparent glaze is adjusted to (1.46 - 1.48) g / cm 3 , the water content of the transparent glaze is 48% - 50%, and the glaze application amount is (20 - 25) g / m 2 .

9. The preparation method according to claim 6, characterized in that When applying the transparent glaze, the density of the transparent glaze is adjusted to (1.80~1.82) g / cm 3 , the water content of the transparent glaze is 30%~32%, and the glaze application amount is (500~510) g / m 2 .

10. The preparation method according to claim 6, characterized in that, The firing temperature is 1200°C to 1220°C.

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