A ceramic tile with a super-thick layer of semi-transparent jade resin patina luster

Abstract

The present invention belongs to the field of ceramics and discloses a tile with an ultra-thick semi-transparent jade-fat patina luster, which comprises a body, a surface glaze layer, a ceramic ink printing layer, a protective glaze layer and a jade-fat effect layer, and the jade-fat effect layer is formed by at least one of jade-fat dry particles, jade-fat glaze slurry and jade-fat particles. The tile with an ultra-thick semi-transparent jade-fat patina luster according to some embodiments of the present invention has an ultra-thick (with a thickness of 1.0-2.0 mm) jade-fat effect layer, and has a special jade-like texture after firing, providing a new decorative effect; the inkjet design and the jade-fat effect layer are mutually integrated, making the jade-fat patina effect of the tile more natural. After the brushing and polishing process, the texture is retained while the entire tile including the gaps is polished, and the hand feeling is moist and delicate.

Description

Technical Field

[0001] The present invention belongs to the field of ceramics, and particularly relates to a ceramic tile with a super-thick layer of semi-transparent jade-fat patina luster. Background Art

[0002] At present, the general definitions of the luster of ceramic tiles in the field of building ceramics include bright luster, high gloss, soft luster, wax luster, etc. There are few ceramic tiles with jade-fat patina luster. Compared with traditional ceramic tiles, ceramic tiles with jade-fat patina luster have a semi-transparent soft light sense and a thick texture like old jade, and are more popular among consumers. The formation of jade-fat patina luster requires a thick and delicate glaze layer, and there should be no bubbles or cracks in the glaze layer. A thicker glaze layer poses higher requirements for the production of ceramic tiles. Generally speaking, too thick a coating amount will cause uneven shrinkage during drying and firing, resulting in cracks or even peeling on the glaze surface. Or when firing, it is not easy for gas to escape, resulting in bubbles or pinholes on the surface, affecting the appearance and strength. The greater the coating amount, the greater the stress on the green body, the green body is easily damaged, and it is easy to cause the ceramic tile to deform during the firing process, affecting the shape and dimensional accuracy.

[0003] Chinese invention patent with the publication number CN108129028A discloses a kind of jade-like and thick-glaze ceramic product and its manufacturing process. The jade-like and thick-glaze ceramic product includes a white porcelain green body and a jade-like and thick glaze arranged outside the white porcelain green body, and the thickness of the jade-like and thick glaze is 3 to 6 times that of the white porcelain green body. The jade-like and thick-glaze ceramic product provided by the invention, through the selection of raw materials for the white porcelain green body and the jade-like and thick glaze, the prepared jade-like and thick-glaze ceramic product has a thick and jade-like glaze surface, showing a blue-green or bluish-white color on the surface. Through strong light irradiation, the texture stacked like cotton wool in the glaze layer can be easily reflected through the white porcelain green body, and can be used for making art ornaments, tea sets or daily-use porcelain, and natural crazing will occur after high-temperature use.

[0004] Chinese invention patent with the publication number CN111960862A discloses a multi-layer composite thick-glaze white porcelain and its manufacturing process. The multi-layer composite thick-glaze white porcelain adopts a three-layer structure of a bottom glaze layer, a connecting glaze layer and a top glaze layer to realize an increase in the thickness of the white porcelain glaze surface. The melting temperature of the connecting glaze layer is between the bottom glaze layer and the top glaze layer, and it can tightly connect the bottom glaze layer and the top glaze layer during firing without causing cracking of the top glaze layer, thereby obtaining a thick-glaze white porcelain with a thick glaze surface, bright color, a milky white pearl luster and a smooth touch.

[0005] It is difficult to prepare ceramic tiles with a thick glaze layer in the prior art. Especially when preparing ceramic tiles with a thick layer of semi-transparent jade-fat patina luster, there are often problems such as unstable product quality, not delicate enough hand feeling, or low light transmittance due to too thick a material layer, too bright or too dull luster, etc. It is necessary to optimize the prior art to prepare super-thick layer semi-transparent jade-fat patina luster ceramic tiles. Summary of the Invention

[0006] The object of the present invention is to overcome at least one deficiency of the prior art and provide a tile with a super-thick semi-transparent jade-fat patina luster.

[0007] The technical solution adopted by the present invention is as follows:

[0008] A tile with a super-thick semi-transparent jade-fat patina luster, comprising a body and a jade-fat effect layer, wherein the jade-fat effect layer is formed by at least one of jade-fat dry particles, jade-fat glaze slurry and jade-fat particles. The preparation method of the tile comprises the following steps:

[0009] Apply a surface glaze on the surface of the body in sequence, apply the jade-fat effect layer to a specified thickness over the whole surface or partially according to the design, dry and fire. The jade-fat effect layer is composed of at least one of jade-fat dry particles and jade-fat glaze slurry. When applying the jade-fat dry particles for the first time, mix the wetting agent, thickening agent and the components of the jade-fat effect layer according to the mixing ratio of 5-10% of the wetting agent, 2-3% of the thickening agent and the balance of the components of the jade-fat effect layer by mass; or

[0010] Uniformly distribute the body powder particles in a pressing machine, lay the required thickness of jade-fat particles over the whole surface or partially, press into a flat surface or a die blank according to the design, and stack or not stack at least one of jade-fat dry particles and jade-fat glaze slurry, then dry and fire;

[0011] Wherein:

[0012] The raw material mass fraction composition of the jade-fat dry particles is: 15-33 parts of potassium feldspar, 18-31 parts of sodium feldspar, 10-20 parts of quartz, 5-9 parts of zinc oxide, 4-15 parts of alumina, 3-7 parts of potassium carbonate, 5-11 parts of calcite, 6-13 parts of dolomite, 12-20 parts of barium carbonate, 1-4 parts of strontium carbonate;

[0013] The raw material mass fraction composition of the solid raw materials of the jade-fat glaze slurry is: 15-38 parts of potassium feldspar, 12-22 parts of sodium feldspar, 11-20 parts of quartz, 18-30 parts of nepheline, 9-15 parts of burned clay, 3-8 parts of alumina, 13-21 parts of calcite, 6-19 parts of dolomite, 0-1 part of fluorite, 3-8 parts of wollastonite, 7-18 parts of barium carbonate, 0-2 parts of zirconia, 1-4 parts of zinc oxide, 3-10 parts of strontium carbonate;

[0014] The raw material mass fraction composition of the jade-fat particles is: 18-27 parts of potassium feldspar, 10-23 parts of sodium feldspar, 2-11 parts of quartz, 20-33 parts of nepheline, 6-12 parts of kaolin, 3-8 parts of alumina, 11-26 parts of calcite, 12-23 parts of dolomite, 3-8 parts of wollastonite, 6-15 parts of barium carbonate, 4-11 parts of zinc oxide, 3-10 parts of strontium carbonate.

[0015] In some examples, the chemical mass composition of the jade-fat dry particles is: SiO 2: 20 - 43%, Al 2 O 3 : 7 - 20%, K 2 O: 1 - 13%, Na 2 O: 1 - 11%, CaO: 8 - 30%, MgO: 2 - 10%, ZnO: 4 - 10%, BaO: 5 - 17%, SrO: 1 - 3%.

[0016] In some examples, the chemical mass composition of the solid components of the jade paste glaze slurry is: SiO 2 : 22 - 50%, Al 2 O 3 : 5 - 14%, K 2 O: 3 - 11%, Na 2 O: 3 - 13%, CaO: 8 - 17%, MgO: 7 - 13%, ZnO: 3 - 12%, BaO: 2 - 10%, SrO: 1 - 3%, ZrO: 0 - 1%.

[0017] In some examples, the chemical mass composition of the jade paste particles is: SiO 2 : 16 - 37%, Al 2 O 3 : 5 - 26%, K 2 O: 3 - 16%, Na 2 O: 4 - 18%, CaO: 6 - 18%, MgO: 3 - 15%, ZnO: 3 - 12%, BaO: 1 - 9%, SrO: 1 - 3%.

[0018] In some examples, the preparation method of the jade paste dry granules includes: weighing the jade paste dry granule raw materials according to the ratio, pouring them into a frit furnace, firing at 1420 - 1600 °C for 1 - 5 h, and then crushing and screening to obtain the jade paste dry granules.

[0019] In some examples, the preparation method of the jade paste glaze slurry includes: weighing the jade paste glaze slurry raw materials according to the ratio, pouring them into a ball mill tank, adding appropriate additives and water, ball milling and sieving to obtain the jade paste glaze slurry.

[0020] In some examples, the preparation method of the jade paste particles includes: weighing the jade paste particle raw materials according to the ratio, crushing and mixing them, adding appropriate additives and water, granulating, drying and screening to obtain the jade paste particles.

[0021] In some examples, the average particle size of the jade paste dry granules is 45 - 250 μm.

[0022] In some examples, the specific gravity of the jade paste glaze slurry is 1.28 - 1.65, and the viscosity at 25 °C is 39.43 - 67.02 cP.

[0023] In some examples, the average particle size of the jade fat particles is 105 - 330 μm.

[0024] In some examples, an inkjet printing layer and / or a protective glaze layer are further provided between the surface glaze and the jade fat effect layer.

[0025] In some examples, 1 - 5% of corundum slurry is added to the final application of the jade fat effect layer to increase the glaze surface temperature and enhance the wear resistance of the glaze surface.

[0026] In some examples, the firing temperature is 1130 - 1210 °C.

[0027] In some examples, the firing time is 30 - 70 min.

[0028] In some examples, the wetting agent is selected from the wetting agent numbered DSR1138 of Guangdong Doway Ceramic Materials Co., Ltd.

[0029] In some examples, the thickening agent is selected from the thickening agent numbered DS - 9 of Guangdong Doway Ceramic Materials Co., Ltd.

[0030] In some examples, the thickness of the jade fat effect layer is 1.0 - 2.0 mm.

[0031] In some examples, the fired ceramic tile is polished with a fiber brush head. Preferably, it is polished with a 60 - mesh carbon fiber brush head.

[0032] The above features can be arbitrarily combined without conflict.

[0033] The beneficial effects of the present invention are:

[0034] The ceramic tiles with ultra - thick layer semi - transparent jade fat patina luster in some embodiments of the present invention have an ultra - thick (with a thickness of 1.0 - 2.0 mm) jade fat effect layer, and have special jade - like textures on their own after firing, providing a new decorative effect.

[0035] The ceramic tiles with ultra - thick layer semi - transparent jade fat patina luster in some embodiments of the present invention have the inkjet design and the jade fat effect layer integrated with each other, making the jade fat patina effect of the ceramic tiles more natural.

[0036] The ceramic tiles with ultra - thick layer semi - transparent jade fat patina luster in some embodiments of the present invention have natural textures on the surface of the jade fat effect layer after firing. Through the brushing and polishing process, the textures are retained while the entire ceramic tile including the gaps is polished, and the hand feel is moist and delicate. Description of the Drawings

[0037] Figure 1 It is a photo of the ceramic tile sample of Example 1.

[0038] Figure 2 It is a photo of the ceramic tile sample of Example 2.

[0039] Figure 3 It is a photo of the tile sample of Example 3.

[0040] Figure 4 It is a photo of the tile sample of Example 4.

[0041] Figure 5 It is a photo of the tile sample of Example 5.

[0042] Figure 6 It is a photo of the tile sample of Example 6.

[0043] Figure 7 It is a photo of the tile sample of Comparative Example 1.

[0044] Figure 8 It is a photo of the tile sample of Comparative Example 2.

[0045] Figure 9 It is a photo of the tile sample of Comparative Example 3.

[0046] Figure 10 It is a photo of the tile sample of Comparative Example 4.

[0047] Figure 11 It is a photo of the tile sample of Comparative Example 5.

[0048] Figure 12 It is a photo of the tile sample of Comparative Example 6.

[0049] Figure 13 It is a photo of the tile sample of Comparative Example 7.

[0050] Figure 14 It is a photo of the tile sample of Comparative Example 8. Detailed implementation manners

[0051] A tile with a super-thick layer of semi-transparent jade resin patina luster, comprising a body and a jade resin effect layer, wherein the jade resin effect layer is formed by at least one of jade resin dry particles, jade resin glaze slurry and jade resin particles. The preparation method of the tile comprises the following steps:

[0052] Apply a surface glaze on the surface of the body in sequence, apply the jade resin effect layer as a whole or partially according to the design to a specified thickness, dry and fire. The jade resin effect layer is composed of at least one of jade resin dry particles and jade resin glaze slurry. When applying the jade resin dry particles for the first time, mix the wetting agent, thickening agent and the components of the jade resin effect layer according to the mixing ratio of 5-10% of the wetting agent, 2-3% of the thickening agent and the remaining components of the jade resin effect layer by mass; or

[0053] Uniformly distribute the blank powder particles in a compacting machine, spread jade fat particles with the required thickness over the entire surface or partially, and press them into a flat surface or a mold blank according to the design. Stack or do not stack at least one of the jade fat dry particles and the jade fat glaze slurry, and then dry and sinter them.

[0054] Among them:

[0055] The raw material mass fraction composition of the jade fat dry particles is as follows: 15 - 33 parts of potassium feldspar, 18 - 31 parts of sodium feldspar, 10 - 20 parts of quartz, 5 - 9 parts of zinc oxide, 4 - 15 parts of alumina, 3 - 7 parts of potassium carbonate, 5 - 11 parts of calcite, 6 - 13 parts of dolomite, 12 - 20 parts of barium carbonate, and 1 - 4 parts of strontium carbonate.

[0056] The raw material mass fraction composition of the solid raw materials of the jade fat glaze slurry is as follows: 15 - 38 parts of potassium feldspar, 12 - 22 parts of sodium feldspar, 11 - 20 parts of quartz, 18 - 30 parts of nepheline, 9 - 15 parts of calcined clay, 3 - 8 parts of alumina, 13 - 21 parts of calcite, 6 - 19 parts of dolomite, 0 - 1 part of fluorite, 3 - 8 parts of wollastonite, 7 - 18 parts of barium carbonate, 0 - 2 parts of zirconia, 1 - 4 parts of zinc oxide, and 3 - 10 parts of strontium carbonate.

[0057] The raw material mass fraction composition of the jade fat particles is as follows: 18 - 27 parts of potassium feldspar, 10 - 23 parts of sodium feldspar, 2 - 11 parts of quartz, 20 - 33 parts of nepheline, 6 - 12 parts of kaolin, 3 - 8 parts of alumina, 11 - 26 parts of calcite, 12 - 23 parts of dolomite, 3 - 8 parts of wollastonite, 6 - 15 parts of barium carbonate, 4 - 11 parts of zinc oxide, and 3 - 10 parts of strontium carbonate.

[0058] In order to obtain a better decorative effect or different decorative effects, a surface glaze layer, a ceramic ink printing layer, a protective glaze layer, etc. can also be set according to needs.

[0059] The jade fat dry particles are granular. For better application, they can be applied in multiple passes. Preferably, the thickness of each application is the same.

[0060] In the present invention, barium carbonate is introduced as the main source of barium oxide in the composition. Barium oxide has the strongest fluxing effect among the alkaline earth metal oxides, which can reduce the sintering temperature of the product, make the temperature of the glaze and the body consistent, and prevent the glaze from losing luster due to insufficient maturity caused by temperature mismatch. Adding barium carbonate to ceramics can reduce the generation of pores and bubbles, thereby improving the appearance quality and internal performance of ceramics. In addition, the addition of barium carbonate can also improve the translucency of ceramics, making the ceramic products look more transparent.

[0061] Introducing strontium carbonate provides strontium oxide for the composition, which is beneficial to reducing the viscosity of the material, widening the melting and sintering range, making the plasticity of the material longer, and improving the compressive strength of the material in the glass phase. In addition, strontium oxide, as a heavier element, can increase the refractive index of the material.

[0062] Calcite and dolomite provide divalent network modifier oxides calcium oxide and magnesium oxide for the composition, releasing free oxygen at high temperatures to destroy the network structure, reducing the viscosity of the material in the molten state, and facilitating the melting of the material. The presence of a relatively large amount of calcium oxide in the material increases the refractoriness of the material and causes the jade-fat effect layer to become opaque after firing, showing the texture of old jade.

[0063] Nepheline, also known as nepheline syenite, is a potassium- and sodium-rich rare aluminosilicate mineral. Compared with albite and orthoclase, nepheline has high contents of potassium oxide, sodium oxide, and alumina, thus endowing it with unique physical and chemical properties. Using more nepheline in jade-fat glaze and jade-fat particles can relatively reduce the melting temperature of the material and make the jade-fat effect layer delicate and soft.

[0064] In some examples, the chemical mass composition of the jade-fat dry granules is: SiO 2 : 20 - 43%, Al 2 O 3 : 7 - 20%, K 2 O: 1 - 13%, Na 2 O: 1 - 11%, CaO: 8 - 30%, MgO: 2 - 10%, ZnO: 4 - 10%, BaO: 5 - 17%, SrO: 1 - 3%.

[0065] In some examples, the chemical mass composition of the solid components of the jade-fat glaze slurry is: SiO 2 : 22 - 50%, Al 2 O 3 : 5 - 14%, K 2 O: 3 - 11%, Na 2 O: 3 - 13%, CaO: 8 - 17%, MgO: 7 - 13%, ZnO: 3 - 12%, BaO: 2 - 10%, SrO: 1 - 3%, ZrO: 0 - 1%.

[0066] In some examples, the chemical mass composition of the jade-fat particles is: SiO 2 : 16 - 37%, Al 2 O 3 : 5 - 26%, K 2 O: 3 - 16%, Na 2 O: 4 - 18%, CaO: 6 - 18%, MgO: 3 - 15%, ZnO: 3 - 12%, BaO: 1 - 9%, SrO: 1 - 3%.

[0067] In some examples, the preparation method of the jade fat dry granules includes: weighing the raw materials of the jade fat dry granules according to the ratio, pouring them into a fritted glass furnace, firing at 1420 - 1600 °C for 1 - 5 h, then crushing and screening to obtain the jade fat dry granules. The jade fat dry granules prepared by this melting method have stable properties, which is beneficial to obtaining a high-quality jade fat effect layer.

[0068] In some examples, the preparation method of the jade fat glaze slurry includes: weighing the raw materials of the jade fat glaze slurry according to the ratio, pouring them into a ball mill tank, adding appropriate additives and water, ball milling and sieving to obtain the jade fat glaze slurry.

[0069] In some examples, the preparation method of the jade fat particles includes: weighing the raw materials of the jade fat particles according to the ratio, crushing and mixing them, adding appropriate additives and water, granulating, drying and screening to obtain the jade fat particles. The jade fat particles can better control the thickness of the jade fat effect layer.

[0070] In some examples, the preparation process of the ceramic tile includes: after spraying or coating the surface glaze on the green body, inkjet printing, applying a protective glaze, and then applying the glue and cloth-like jade fat dry granules on the whole surface or partially according to the design, repeatedly applying the material to the required thickness, spraying glue on the top to fix it, drying, and firing.

[0071] In some examples, the preparation process of the ceramic tile includes: after spraying or coating the surface glaze on the green body, inkjet printing, applying a protective glaze, printing the depressed ink according to the design, and then applying the jade fat dry granules on the whole surface or partially, repeatedly applying the material to the required thickness, spraying glue on the top to fix it, drying and firing.

[0072] In some examples, the preparation process of the ceramic tile includes: after spraying or coating the surface glaze on the green body, inkjet printing, applying the jade fat glaze slurry, and then applying the jade fat glaze slurry with the required thickness on the whole surface or partially, drying, and firing.

[0073] In some examples, the preparation process of the ceramic tile includes: evenly distributing the green body powder particles in a pressing machine, laying the jade fat particles with the required thickness on the whole surface or partially, pressing into a flat surface or a mold blank according to the design, inkjet printing according to the design, applying a protective glaze, stacking or not stacking the jade fat dry granules and the jade fat glaze, drying, and firing.

[0074] The jade fat dry granules, the jade fat glaze slurry and the jade fat particles can be used in combination. For example, first use the jade fat particles to lay on the bottom layer, then apply the jade fat glaze slurry, and then apply the jade fat dry granules.

[0075] In some examples, the preparation process of the ceramic tile includes: after spraying or coating the surface glaze on the green body, applying the jade fat glaze, inkjet printing, and then applying the jade fat glaze with the required thickness on the whole surface or partially, drying and firing.

[0076] In some examples, the average particle size of the jade fat dry granules is 45 - 250 μm. This is beneficial for spreading.

[0077] In some examples, the specific gravity of the jade fat glaze slurry is 1.28 to 1.65, and the viscosity at 25 °C is 39.43 to 67.02 cP. This is beneficial for glazing.

[0078] In some examples, the average particle size of the jade fat particles is 105 to 330 μm.

[0079] In some examples, an inkjet printing layer and / or a protective glaze layer are further provided between the surface glaze and the jade fat effect layer.

[0080] In some examples, 1 to 5% of corundum slurry is added to the final application of the jade fat effect layer, which can increase the glaze surface temperature and enhance the wear resistance of the glaze surface.

[0081] In some examples, the firing temperature is 1130 to 1210 °C.

[0082] In some examples, the firing time is 30 to 70 min.

[0083] There is no particular limitation on the type of wetting agent. In some examples, the wetting agent is selected from the wetting agent with the number DSR1138 of Guangdong Doway Ceramic Materials Co., Ltd. This wetting agent has a good wetting effect and is a better choice.

[0084] The function of the thickener is to adjust the fluidity of the dry granule glaze, and its dosage can be adjusted accordingly according to the viscosity of the glaze. In some examples, the thickener is selected from the thickener with the number DS-9 of Guangdong Doway Ceramic Materials Co., Ltd.

[0085] In some examples, the thickness of the jade fat effect layer is 1.0 to 2.0 mm. In this way, a better jade fat effect can be obtained.

[0086] In some examples, the fired ceramic tile is polished with a fiber brush head. Preferably, it is polished with a 60-mesh carbon fiber brush head.

[0087] The above features can be arbitrarily combined without conflict.

[0088] The following disclosure provides various different embodiments or examples to implement different solutions of the present invention.

[0089] In the following examples, unless otherwise specified, the parts are by mass, and the percentages are by mass percentage; 7% of the wetting agent DSR1138 and 2% of the thickener DS-9 are added to the first jade fat effect layer, and 4% of corundum slurry is added to the final jade fat effect layer; the specific gravity of the jade fat glaze slurry is 1.28 to 1.65, and the viscosity at 25 °C is 39.43 to 67.02 cP.

[0090] The jade fat materials of the jade fat effect layer in different examples are as follows:

[0091] The jade fat materials used in Example 1, Example 2, Comparative Example 1, and Comparative Example 2 are in the form of jade fat dry granules. The raw material mass fraction composition of the jade fat dry granules used is as follows:

[0092] Potassium feldspar 19 parts, potassium carbonate 3 parts, sodium feldspar 24 parts, quartz 17 parts, alumina 7 parts, zinc oxide 8 parts, calcite 10 parts, dolomite 7 parts, barium carbonate 15 parts, strontium carbonate 2 parts.

[0093] The jade fat materials used in Example 3, Example 4, Comparative Example 3, and Comparative Example 4 are in the form of jade fat glaze slurries. The jade fat glaze slurries are obtained by ball-milling 100 parts of solid raw materials, 40 parts of water, 0.15 part of sodium carboxymethyl cellulose, and 0.35 part of sodium tripolyphosphate evenly. The solid raw material mass fraction composition of the jade fat glaze slurries used is as follows:

[0094] Potassium feldspar 27 parts, sodium feldspar 16 parts, quartz 14 parts, nepheline 28 parts, burned clay 10 parts, alumina 3 parts, zinc oxide 2 parts, calcite 16 parts, dolomite 6 parts, fluorite 1 part, wollastonite 3 parts, barium carbonate 9 parts, strontium carbonate 4 parts, zirconia 1 part.

[0095] The jade fat materials used in Example 5, Example 6, and Comparative Example 5 are in the form of jade fat granules. The raw material mass fraction composition of the jade fat granules used is as follows:

[0096] Potassium feldspar 22 parts, sodium feldspar 13 parts, quartz 5 parts, nepheline 25 parts, kaolin 10 parts, alumina 4 parts, zinc oxide 6 parts, calcite 19 parts, dolomite 18 parts, wollastonite 5 parts, barium carbonate 10 parts, strontium carbonate 4 parts.

[0097] The preparation methods of different examples are as follows. For the convenience of comparison, the firing conditions of each example are unified as firing at a surface temperature of 1165 °C in a conventional roller hearth kiln for 50 min. Example 1

[0098] Process flow: green body → surface glaze → inkjet design → spray protective glaze → apply jade fat dry granules (4 times) → spray glue for fixation → drying → firing → carbon fiber brush polishing.

[0099] The step of applying jade fat dry granules is repeated 4 times to make the total application thickness of the jade fat dry granules 1.5 mm. It can be seen that the jade fat effect is delicate and soft. Figure 1 It can be seen that the jade fat effect is delicate and soft. Example 2

[0100] Process flow: green body → surface glaze → inkjet design → spray protective glaze → print sunken ink → apply jade fat dry granules (4 times) → spray glue for fixation → drying → firing → carbon fiber brush polishing.

[0101] After printing the sunken ink, the step of applying jade paste dry particles is repeated 4 times to make the total application thickness of the jade paste dry particles 1.5 mm. From Figure 2 It can be seen that the jade paste effect is delicate and soft. Example 3

[0102] Process flow: green body → surface glaze → applying jade paste glaze → inkjet design → spraying protective glaze → applying jade paste glaze slurry (3 times) → firing → carbon fiber brush polishing.

[0103] The application thickness of the first jade paste glaze slurry is 0.5 mm, the application thickness of the second jade paste glaze slurry is 1.0 mm, and the application thickness of the last jade paste glaze slurry is 0.2 mm, so that the total application thickness of the jade paste glaze slurry is 1.7 mm. From Figure 3 It can be seen that the jade paste effect is delicate and soft. Example 4

[0104] Process flow: green body → surface glaze → inkjet design → spraying protective glaze → applying jade paste glaze slurry (4 times) → firing → carbon fiber brush polishing.

[0105] The step of applying jade paste glaze slurry is repeated 4 times to make the total application thickness of the jade paste dry particles 1.5 mm. From Figure 4 It can be seen that the jade paste effect is delicate and soft. Example 5

[0106] Process flow: green body particles → jade paste particles (1 time) → pressing and forming → inkjet printing → protective glaze → firing → carbon fiber brush polishing.

[0107] The total cloth thickness of the jade paste particles is 1.0 mm. From Figure 5 It can be seen that the jade paste effect is delicate and soft. Example 6

[0108] Process flow: green body particles → jade paste particles (1 time) → pressing and forming → inkjet printing → protective glaze → applying jade paste dry particles / jade paste glaze slurry → firing → carbon fiber brush polishing.

[0109] The cloth thickness of the jade paste particles is 1.0 mm. From Figure 6 It can be seen that the jade paste effect is delicate and soft. Comparative Example 1

[0110] Process flow: green body → surface glaze → inkjet design → spraying protective glaze → printing sunken ink → applying jade paste dry particles (3 times) → spraying glue for fixation → drying → firing → carbon fiber brush polishing.

[0111] The step of applying jade paste dry particles is repeated 3 times to make the total thickness of the jade paste dry particles 0.8 mm. It is thinner than that of Example 1. From Figure 7 It can be seen that the glaze surface effect of the fired material is thin and the jade feeling is weak. Comparative Example 2

[0112] Process flow: green body → surface glaze → inkjet design → spray protective glaze → print sunken ink → apply jade fat dry particles (8 times) → spray glue for fixation → drying → firing → carbon fiber brush polishing.

[0113] The step of printing sunken ink and applying jade fat dry particles is repeated 8 times, making the total thickness of the jade fat dry particles 2.3 mm. It is thicker than that of Example 2. From Figure 8 It can be seen that the unevenness created by multiple inkjet prints and then covering of the sunken ink is weakened, and the thick dry particle layer has poor light transmittance and cannot display the semi-permeability of the jade fat patina. Comparative Example 3

[0114] Process flow: green body → surface glaze → apply jade fat glaze slurry (1 time) → inkjet design → spray protective glaze → apply jade fat glaze slurry (2 times) → firing → carbon fiber brush polishing.

[0115] The application thickness of the first jade fat glaze slurry is 0.3 mm, and the application thickness of the last jade fat glaze slurry is 0.3 mm, making the total thickness of the jade fat glaze slurry 0.6 mm. It is thinner than that of the jade fat glaze slurry in Example 3. From Figure 9 It can be seen that the longitudinal bleeding space of the inkjet design between the two layers of jade fat glaze slurry is reduced, and the effect is relatively rigid. Comparative Example 4

[0116] Process flow: green body → surface glaze → inkjet design → spray protective glaze → apply jade fat glaze slurry (8 times) → firing → carbon fiber brush polishing.

[0117] The step of applying jade fat dry particles is repeated 8 times, making the total thickness of the jade fat dry particles 2.3 mm. It is thicker than the jade fat glaze slurry thickness in Example 4. From Figure 10 It can be seen that the degree of opacification of the glaze layer accumulation increases, and the underglaze inkjet design is blocked by the too thick glaze layer, affecting the effect. Comparative Example 5

[0118] Process flow: green body particles → jade fat particles (1 time) → pressing and forming → inkjet printing → protective glaze → apply jade fat dry particles / jade fat glaze slurry → firing.

[0119] The total cloth thickness of the jade fat particles is 1.0 mm. This example has no polishing compared to Example 5, and the hand feeling is poor. From Figure 11 It can be seen that there are uneven holes on the surface of the ceramic tile. Comparative Example 6

[0120] Process flow: green body → surface glaze → inkjet design → spray protective glaze → apply jade fat dry particles (4 times) → spray glue for fixation → drying → firing → carbon fiber brush polishing.

[0121] The application thickness of the jade fat dry particles is 1.5 mm, and the formula is the same as that of Example 1. Among them, wetting agents and thickeners are not added to the first jade fat dry particles, the contact surface is relatively dry during cloth application, the water absorption is fast, and the glaze surface is uneven. From Figure 12It can be seen that local cracks appear in the brick blanks during drying, and the jade grease effect layer warps up. After firing, the glaze surface is uneven and there is glaze shrinkage. Comparative Example 7

[0122] Process flow: green body → surface glaze → inkjet design → spray protective glaze → apply jade grease dry particles (4 times) → spray glue for fixation → drying → firing → carbon fiber brush polishing.

[0123] The application thickness of the jade grease dry particles is 1.5 mm, and the formula is the same as that of Example 1. Among them, 20% wetting agent and 5% thickening agent are added to the first application of jade grease dry particles. From Figure 13 It can be seen that the dry particle glaze is too thick, resulting in uneven cloth spreading, and the required drying time is prolonged, which is not conducive to production. Comparative Example 8

[0124] Process flow: green body → surface glaze → inkjet design → spray protective glaze → apply jade grease dry particles (4 times) → spray glue for fixation → drying → firing → carbon fiber brush polishing.

[0125] The application thickness of the jade grease dry particles is 1.5 mm, and the formula is the same as that of Example 1. Among them, corundum slurry is not added to the last application of jade grease dry particles. From Figure 14 It can be seen that the hardness of the glaze surface is relatively low and scratches are likely to appear.

[0126] The above is a further detailed description of the present invention, and it should not be regarded as a limitation to the specific implementation of the present invention. For those of ordinary skill in the technical field to which the present invention belongs, simple deductions or substitutions without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. A ceramic tile with an ultra-thick layer of semi-transparent jade patina luster, characterized in that: The ceramic tile comprises a body and a jade-fat effect layer, wherein the jade-fat effect layer is formed by at least one of jade-fat dry particles, jade-fat glaze slurry and jade-fat particles, and the thickness of the jade-fat effect layer is 1.0 to 2.0 mm. The preparation method of the ceramic tile comprises the following steps: Apply glaze on the surface of the blank in sequence, apply a jade-fat effect layer to a specified thickness on the entire surface or partially according to the design, dry and sinter, the jade-fat effect layer is composed of at least one of jade-fat dry particles and jade-fat glaze slurry, and when the jade-fat dry particles are applied for the first time, the wetting agent, the thickener and the jade-fat effect layer components are mixed in a mixing ratio of 5-10% by mass of the wetting agent, 2-3% by mass of the thickener and the remainder of the jade-fat effect layer components; or The powder particles are evenly distributed in a press, and the jade fat particles of the required thickness are spread on the entire surface or part of the surface, and the surface is pressed into a plane or mold blank according to the design, and at least one of the jade fat dry particles and the jade fat glaze slurry is superimposed or not superimposed, and then dried and fired; in: The raw materials of the jade fat dry particles are composed by weight: 15 to 33 parts of potassium feldspar, 18 to 31 parts of sodium feldspar, 10 to 20 parts of quartz, 5 to 9 parts of zinc oxide, 4 to 15 parts of aluminum oxide, 3 to 7 parts of potassium carbonate, 5 to 11 parts of calcite, 6 to 13 parts of dolomite, 12 to 20 parts of barium carbonate, and 1 to 4 parts of strontium carbonate; The mass fraction of the solid raw materials of the jade glaze slurry is as follows: 15-38 parts of potassium feldspar, 12-22 parts of sodium feldspar, 11-20 parts of quartz, 18-30 parts of nepheline, 9-15 parts of burnt clay, 3-8 parts of aluminum oxide, 13-21 parts of calcite, 6-19 parts of dolomite, 0-1 part of fluorite, 3-8 parts of wollastonite, 7-18 parts of barium carbonate, 0-2 parts of zirconium oxide, 1-4 parts of zinc oxide, and 3-10 parts of strontium carbonate; The raw materials of the jade fat particles are composed in mass parts: 18 to 27 parts of potassium feldspar, 10 to 23 parts of sodium feldspar, 2 to 11 parts of quartz, 20 to 33 parts of nepheline, 6 to 12 parts of kaolin, 3 to 8 parts of aluminum oxide, 11 to 26 parts of calcite, 12 to 23 parts of dolomite, 3 to 8 parts of wollastonite, 6 to 15 parts of barium carbonate, 4 to 11 parts of zinc oxide, and 3 to 10 parts of strontium carbonate.

2. The ceramic tile according to claim 1, characterized in that: The chemical mass composition of the jade fat dry particles is: SiO2: 20-43%, Al2O3: 7-20%, K2O: 1-13%, Na2O: 1-11%, CaO: 8-30%, MgO: 2-10%, ZnO: 4-10%, BaO: 5-17%, SrO: 1-3%; The chemical mass composition of the solid components of the jade glaze slurry is: SiO2: 22-50%, Al2O3: 5-14%, K2O: 3-11%, Na2O: 3-13%, CaO: 8-17%, MgO: 7-13%, ZnO: 3-12%, BaO: 2-10%, SrO: 1-3%, ZrO: 0-1%; The chemical mass composition of the jade fat particles is: SiO2: 16-37%, Al2O3: 5-26%, K2O: 3-16%, Na2O: 4-18%, CaO: 6-18%, MgO: 3-15%, ZnO: 3-12%, BaO: 1-9%, SrO: 1-3%.

3. The ceramic tile according to claim 1 or 2, characterized in that: The preparation method of the jade dry granules comprises: weighing the jade dry granule raw materials according to the proportion, pouring them into a frit furnace, calcining at 1420-1600°C for 1-5 hours, crushing and screening to obtain the jade dry granules; The preparation method of the jade glaze slurry comprises: weighing the raw materials of the jade glaze slurry according to the proportion, pouring the raw materials into a ball mill, adding an appropriate amount of additives and water, ball milling and sieving to obtain the jade glaze slurry; The preparation method of the jade fat particles comprises: weighing the jade fat particle raw materials according to the proportion, crushing and mixing, adding a proper amount of additives and water, granulating, drying and screening to obtain the jade fat particles.

4. The ceramic tile according to claim 1 or 2, characterized in that: The average particle size of the jade fat dry particles is 45 to 250 μm; The specific gravity of the jade glaze slurry is 1.28-1.65, and the viscosity at 25°C is 39.43-67.02 cP; The average particle size of the jade fat particles is 105-330 μm.

5. The ceramic tile according to claim 1, characterized in that: An inkjet printing layer and / or a protective glaze layer is also provided between the surface glaze and the jade-fat effect layer.

6. The ceramic tile according to claim 1, 2 or 5, characterized in that: 1-5% of corundum slurry is added to the final application of the jade effect layer to increase the glaze surface temperature and enhance the glaze surface wear resistance.

7. The ceramic tile according to claim 1, 2 or 5, characterized in that: The sintering temperature is 1130-1210°C.

8. The ceramic tile according to claim 1, 2 or 5, characterized in that: The sintering time is 30 to 70 minutes.

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