Charge localization platinum / gold dry pellets, tiles, and methods of making the same

Abstract

The charge positioning platinum / gold dry particle, tile and preparation method thereof belong to the technical field of ceramic production process. The platinum / gold dry particle is a platinum / gold dry particle with a "metal oxide / glass phase" composite structure, and a nanocrystallized layer can be formed on the surface after firing. The preparation method of the charge positioning platinum / gold dry particle tile is developed, and the prepared tile product is a platinum dry particle or gold dry particle tile based on accurate positioning technology, which can realize accurate and directional distribution of the platinum dry particle or gold dry particle according to the preset pattern, and improve the decoration fineness and artistic nature. On this basis, the combination strength of the platinum dry particle or gold dry particle and the glaze layer and the metal luster stability can be enhanced through the superfine dry particle glaze and high-temperature firing process optimization; meanwhile, the surface luxurious texture and physical properties (wear resistance, stain resistance and slip resistance) are considered.

Description

Technical Field

[0001] This invention belongs to the field of ceramic production technology, specifically relating to a charge-positioned platinum / gold dry granules, ceramic tiles, and their preparation methods. Background Technology

[0002] Existing platinum or gold dry-granule ceramic tiles mostly use a uniform spreading or full-lay process, resulting in a high rate of texture repetition and a stiff decorative effect, which cannot meet the needs of high-end customized patterns.

[0003] Traditional dry granules have poor adhesion, and after firing, problems such as granule detachment and uneven gloss are likely to occur.

[0004] The bonding strength between the metallic dry particles and the glaze layer is insufficient, making them prone to oxidation and discoloration after long-term use, thus affecting the product's lifespan. For example, the platinum or gold dry particles mentioned in the patent application publication CN202411585997.1, which describes a ceramic tile with metallic luster and its preparation method, use a mixture of 120-250 mesh dry particles and employ spraying or full-coverage processes. This method cannot achieve precise texture positioning and cannot meet the needs of high-end customized patterns. Summary of the Invention

[0005] To address the shortcomings of metallic-luster ceramic tiles, this invention develops a charge-positioned platinum / gold dry granule, a ceramic tile, and its preparation method. The resulting ceramic tile is a type of platinum, gold, or mixed platinum / gold dry granule tile based on precise positioning technology. This allows the platinum, gold, or mixed platinum / gold dry granules to be precisely oriented according to a preset pattern, enhancing the decorative refinement and artistry. The platinum / gold dry granules employ a "metal oxide / glass phase" composite structure, and a nanocrystalline layer forms on their surface after firing.

[0006] Based on this, the bonding strength and metallic luster stability of platinum dry granules, gold dry granules, or a mixture of platinum and gold dry granules with the glaze layer can be enhanced through optimization of ultra-fine dry granule glaze and high-temperature firing process; at the same time, the luxurious texture and physical properties (wear resistance, stain resistance, and anti-slip properties) of the surface can be taken into account.

[0007] To solve the above problems, the present invention is achieved through the following technical solution:

[0008] The first objective of this invention is:

[0009] A platinum / gold dry granule is provided, the platinum / gold dry granule comprising: metal oxide, and borax or boric acid;

[0010] During high-temperature calcination, the metal oxide and the glass network SiO2 in the ceramic tile glaze are fused together with borax or boric acid to regulate the melting temperature and form a "metal oxide / glass phase" composite structure. After firing, platinum / gold dry particles with a nanocrystalline layer can be formed on the surface.

[0011] The aforementioned platinum / gold dry granules can be used in the preparation of charge-positioned platinum / gold dry granule ceramic tiles.

[0012] During high-temperature calcination, the metal oxides (including transition metal oxides) in the platinum / gold dry granule formulation interact with the SiO2 glass network forging in the ceramic tile glaze through ionic bonds (i.e., the platinum / gold dry granule formulation of this technical solution needs to be used in conjunction with ceramic tile glaze containing SiO2 glass network forging, such as the ultrafine dry granule glaze in this technical solution containing SiO2 glass network forging). Among them, the metal oxides (such as magnesium, zirconium, tin, etc.) have larger ionic radii and lower field strength, and their bonding strength with oxygen anions is not as strong as that of transition metal oxides, forming an amorphous network structure. The transition metal oxides (such as cobalt, beryllium, manganese, etc.) act as catalysts, accelerating the rearrangement of oxide ions and the formation of crystal phases in the glaze. Through the phase separation effect, they are enriched on the glaze surface to form crystal nuclei. With the aid of borax or boric acid, the melting temperature is controlled, which promotes the crystal nuclei and the amorphous network structure to take shape and fuse into one, embedding them in the glass network forging in crystalline form, thereby forming a "metal oxide / glass phase" composite structure.

[0013] The bonding of metal oxides with oxide ions in glazes mainly relies on ionic or covalent bonds, while transition metal oxides form more complex coordination or metal-metal bonds, which are usually stronger.

[0014] Although metal oxides also participate in the reaction, their reaction intensity is lower than that of transition metal oxides. The reaction of metal oxides mainly depends on their ionic radius, charge, and interaction with other oxides in the glaze. These factors limit their crystal phase formation rate.

[0015] The further optimization of the platinum / gold dry granules described in this invention is as follows:

[0016] The platinum / gold granules mentioned above comprise the following raw material components by weight percentage:

[0017] Titanium oxide 45-60%, zirconium oxide 10-20%, tin oxide 8-10%, beryllium oxide 10-20%, cobalt oxide 0.5-1.5%, borax 8-12%, the sum of the components is 100%;

[0018] Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water;

[0019] The platinum dry granules are platinum dry granules with a "metal oxide / glass phase" composite structure, which can form a nanocrystalline layer on the surface after firing;

[0020] The gold granules in the platinum / gold granules comprise the following raw material components by weight percentage:

[0021] Aluminum silicate 35-45%, sodium silicate 17-23%, boric acid 8-12%, titanium dioxide 8-12%, pyrite powder 4-7%, copper oxide 4-7%, manganese oxide 3-7%, magnesium oxide 4-8%, the sum of the components is 100%;

[0022] Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water;

[0023] The gold dry granules are gold dry granules with a "metal oxide / glass phase" composite structure, which can form a nanocrystalline layer on the surface after firing.

[0024] The further optimization of the platinum / gold dry granules described in this invention is as follows:

[0025] The platinum / gold granules mentioned above comprise the following raw material components by weight percentage:

[0026] Titanium oxide 55%, zirconium oxide 12%, tin oxide 8%, beryllium oxide 13%, cobalt oxide 1%, borax 11%;

[0027] Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water.

[0028] The gold granules in the platinum / gold granules comprise the following raw material components by weight percentage:

[0029] Aluminum silicate 40%, sodium silicate 20%, boric acid 10%, titanium dioxide 10%, pyrite powder 4%, copper oxide 6%, manganese oxide 4%, magnesium oxide 6%;

[0030] Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water.

[0031] The further optimization of the platinum / gold dry granules described in this invention is as follows:

[0032] The particle size range of the platinum / gold dry granules is controlled between 80 and 160 mesh.

[0033] The second objective of this invention is:

[0034] A method for preparing the aforementioned platinum / gold dry granules is provided:

[0035] The aforementioned platinum / gold dry granules include the following preparation steps:

[0036] Weigh the raw material components according to the corresponding formula ratio, mix the raw material components evenly, melt at 1250℃~1320℃, keep at the temperature for 2~3 hours, and then slowly cool to room temperature at a cooling rate of 6~20℃ / h to precipitate crystals. After crushing and screening into dry granules of 80~160 mesh, the platinum / gold dry granules are obtained.

[0037] The third objective of this invention is:

[0038] A method for preparing charge-oriented platinum / gold dry granules ceramic tiles is provided, comprising the following preparation steps:

[0039] S1. Apply a base glaze to the body to obtain brick body A;

[0040] S2. Inkjet print the design pattern onto the brick A, and spray adhesive onto the pattern to obtain brick B;

[0041] S3. Using a high-precision dry pellet mill, the platinum / gold dry pellets described above are printed onto the brick body B according to the positioning pattern to obtain the brick body C.

[0042] S4. Apply ultra-fine dry granule glaze to the brick body C using a glazing machine to obtain the brick body D;

[0043] S5. The brick body D is dried, fired at high temperature, polished, sorted and inspected to obtain the ceramic tile with charge-positioned platinum / gold dry particles;

[0044] The adhesive comprises the following raw material components by weight percentage:

[0045] 100% polyvinyl alcohol solution;

[0046] The mixture of 0.1% silane coupling agent and 0.5% polycationic electrolyte was thoroughly mixed and sieved to obtain the final product.

[0047] Using the aforementioned adhesive, precise positioning of platinum dry granules, gold dry granules, or a mixture of platinum and gold dry granules can be achieved. The adhesive incorporates a silane coupling agent and a polycationic electrolyte. The addition of these two agents imbues the adhesive with a positive charge, thereby enhancing its adsorption capacity for negatively charged platinum dry granules or negatively charged gold dry granules.

[0048] This invention promotes the interlocking of platinum gold granules and glaze layer through adjustment and optimization of the adhesive formulation.

[0049] The method for preparing charge-positioned platinum / gold dry granule ceramic tiles according to the present invention is further optimized as follows:

[0050] It includes one or more of the following features:

[0051] The ultrafine dry granule glaze comprises the following raw material components by weight percentage:

[0052] The ultrafine dry granules consist of 40-50% ultrafine dry particles and 50-60% organic binder, with the sum of all components being 100%. All raw materials are mixed evenly and sieved to prepare the ultrafine dry granule glaze.

[0053] The ultrafine dry granule formulation comprises the following raw material components by weight percentage:

[0054] Potassium feldspar 10-25%, sodium feldspar 34-40%, calcite 11-17%, calcined talc 2-8%, alumina 6-12%, kaolin 3-8%, zirconium silicate 2-4%, glass powder 2-6%, zinc oxide 3-6%, strontium carbonate 2-6%, barium carbonate 2-6%, the sum of the components is 100%;

[0055] Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water;

[0056] Introducing zirconium silicate (micro powder) into the ultrafine dry particle formula can improve the hardness and wear resistance of the glaze layer;

[0057] The ultrafine dry granules include the following preparation steps:

[0058] Weigh the raw material components according to the formula ratio, mix them evenly, melt them at 1550℃, keep them at the temperature for 10 to 12 hours, and then slowly cool them to room temperature at a cooling rate of 6 to 20℃ / h to precipitate crystals. After crushing and selecting 250 to 400 mesh dry particles, the ultrafine dry particles are prepared.

[0059] The organic adhesive comprises the following raw material components in parts by weight:

[0060] 100 parts water, 8 parts hydroxypropyl methylcellulose, 5 parts ethylene glycol, 0.2 parts sodium tripolyphosphate, and 0.12 parts preservative were mixed evenly, finely ground, and sieved to prepare the organic adhesive.

[0061] The base glaze comprises the following raw material components by weight percentage:

[0062] Potassium feldspar powder 35-45%, air-knife kaolin 10-15%, calcite 8-12%, wollastonite powder 3-6%, quartz powder 4-8%, barium carbonate 9-13%, zinc oxide 4-6%, calcined talc 8-12%, alumina 5-10%, the sum of all components is 100%.

[0063] Add 0.14% sodium carboxymethyl cellulose and 0.2% sodium tripolyphosphate. Mix all raw materials evenly, and then ball-mill, discharge the slurry, pass through a 325-mesh sieve, and remove iron to prepare the base glaze.

[0064] The method for preparing charge-positioned platinum / gold dry granule ceramic tiles according to the present invention is further optimized as follows:

[0065] The ultrafine dry granule formulation comprises the following raw material components by weight percentage:

[0066] Potassium feldspar 15%, sodium feldspar 36%, calcite 13%, calcined talc 4%, alumina 9%, kaolin 6%, zirconium silicate 4%, glass powder 3%, zinc oxide 3%, strontium carbonate 3%, barium carbonate 4%;

[0067] Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water.

[0068] The method for preparing charge-positioned platinum / gold dry granule ceramic tiles according to the present invention is further optimized as follows:

[0069] It includes one or more of the following features:

[0070] The positioning error of the high-precision dry pellet mill is ≤0.3mm;

[0071] The amount of adhesive sprayed in step S2 is 5-8 g / m². 2 ;

[0072] The specific gravity of the adhesive is controlled within the range of 1.02 to 1.09 g / ml, and the viscosity is controlled within the range of 20 to 25 mPa·s.

[0073] The amount of platinum / gold dry granules used in step S3 is 60-100 g / m². 2 ;

[0074] In step S4, the spraying pressure range of the ultrafine dry granule glaze is 0.4 to 0.6 MPa, forming a covering layer with a thickness of 0.1 to 0.3 mm on the surface of the positioned platinum / gold dry granules, which serves to fill the gaps between the dry granules.

[0075] The specific gravity of the ultrafine dry granule glaze in step S4 is 1.23±0.02 g / ml, and the spraying amount is 380~400 g / ml. 2 ;

[0076] In step S1, the specific gravity of the base glaze slurry is 1.86–1.98 g / ml, the flow rate is 35–65 seconds, and the application amount of the base glaze is 500–600 g / ml. 2 ;

[0077] The high-temperature firing in step S5 adopts a staged temperature control method:

[0078] Preheating section: 300~600℃, heating rate 8℃ / min;

[0079] Firing section: 1180~1220℃, hold for 15~20min, to promote the melting and interlocking of dry particles and glaze layer;

[0080] The polishing process in step S5 uses 800-1500 grit diamond grinding blocks, with a polishing depth ≤0.05mm and a surface gloss controlled at 50-60 degrees.

[0081] Step S5 also includes a waxing protection step: spraying a nano-level siloxane protective layer to improve the stain resistance level to Grade A.

[0082] The fourth objective of this invention is:

[0083] A ceramic tile is provided, which is prepared according to the corresponding preparation method described above.

[0084] The platinum / gold dry granules described in this invention are platinum / gold dry granules with a "metal oxide / glass phase" composite structure. After firing, a nanocrystalline layer can be formed on the surface, thereby improving the reflectivity.

[0085] The platinum / gold dry granule bonding strength is strong, and the oxidation resistance life is increased by 10 years. (The surface abrasion test results of the glaze layer are excellent).

[0086] The ceramic tile with charge positioning platinum / gold dry particles described in this invention uses a dual-mode matching technology of "inkjet printing + dry particle positioning" to achieve millimeter-level precise alignment between platinum or gold dry particles and patterns, solving the problem of texture misalignment caused by traditional random sprinkling.

[0087] Research on dual-mode matching technology of "inkjet printing + dry pellet positioning":

[0088] Inkjet printing control technology:

[0089] (1) To ensure good performance of the adhesive, the specific gravity is preferably controlled at 1.02 to 1.09 g / ml and the viscosity is controlled at 20 to 25 mpa.s.

[0090] Dry Particle Precision Positioning Collaborative Technology:

[0091] (1) Use a high-precision dry pellet mill to achieve accurate positioning.

[0092] A conventional micro-stirrer is used to agitate and rub platinum or gold granules to give them a negative charge; the negatively charged platinum or gold granules are then precisely adsorbed onto the positively charged adhesive pattern in the printed area, achieving physical positioning.

[0093] (2) In order to further achieve precise positioning of dry particles and better adsorption of dry particles, adhesive and pattern, the adhesive is optimized by adding 0.1% silane coupling agent and 0.5% polycationic electrolyte to the adhesive. The addition of silane coupling agent and polycationic electrolyte can make the adhesive positively charged, thereby enhancing the adsorption capacity of negatively charged platinum or gold dry particles.

[0094] (3) Research and analysis on silane coupling agents:

[0095] Silane coupling agents are dual-ended reactive compounds. One end reacts with the carboxyl groups on the surface of inorganic materials (platinum or gold granules), while the other end binds to organic materials (adhesives). By introducing or modifying silane coupling agents, interfacial bonding can be improved, giving the adhesive a positive charge and thus enhancing its adsorption capacity for platinum or gold granules. Furthermore, silane coupling agents can also improve the interfacial bonding between the adhesive and the platinum or gold granules, thereby increasing the adhesion and strength of the glaze layer.

[0096] (4) Research and analysis on polycationic electrolytes:

[0097] Polycationic electrolytes are a class of polymeric compounds that can ionize into positive ions in water. They generate electrostatic attraction with the surface of platinum or gold granules, thereby enhancing the adsorption effect. At the same time, they exhibit good stability and do not affect other properties of the adhesive.

[0098] In addition, based on the above, the development of the "ultra-fine dry granule glaze filling-melting" process, which fills the gaps between dry granules with ultra-fine particles to form a dense glaze layer, can further improve the surface smoothness.

[0099] The finished bricks prepared by this invention have an anti-slip coefficient ≥0.6 and their radioactivity index meets the Class A standard of GB 6566-2010. Attached Figure Description

[0100] Figure 1 This is a process flow diagram for the preparation of the charge-positioned platinum / gold dry granules ceramic tile according to the present invention.

[0101] Figure 2 This is a photograph of a ceramic tile with charge-positioned platinum dry particles according to the present invention.

[0102] Figure 3 This is a photograph of a ceramic tile with charge-positioned gold dry particles according to the present invention.

[0103] Figure 4 This is a photograph of a ceramic tile with charge-positioned platinum / gold dry granules according to the present invention. Detailed Implementation

[0104] To make the application, technical solution, and advantages of this invention clearer, the invention is described in detail with reference to specific embodiments. It should be understood that the embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this invention. Any simple improvements to the preparation method of this invention based on the inventive concept fall within the scope of protection of this invention.

[0105] Example 1: Study and Analysis of Adhesive Viscosity Process Adjustment

[0106] The viscosity test results of the adhesives are shown in Table 1.

[0107] Table 1. Analysis of Adhesive Viscosity Study

[0108] Adhesive Number Specific gravity g / ml Viscosity (mPa.s) Adhesion effect 1# 1.02～1.09 15 Some dry granules were lost, resulting in poor adhesion. 2# 1.02～1.09 20 Dry granules provide precise positioning and adhesion, resulting in clear patterns and excellent adhesion. 3# 1.02～1.09 25 Dry granules provide precise positioning and adhesion, resulting in clear patterns and excellent adhesion. 4# 1.02～1.09 30 A few dry grains clump together, resulting in a mediocre overall effect. 5# 1.02～1.09 50 Ineffective

[0109] Experimental results show that adhesives with a viscosity controlled at 20–25 mPa·s have better performance.

[0110] Example 2: Preparation method of ceramic tiles with charge-positioned gold dry granules

[0111] A method for preparing ceramic tiles with charge-oriented gold dry particles, comprising the following preparation steps:

[0112] S1. Apply a base glaze to the body to obtain brick body A;

[0113] S2. Inkjet print the design pattern onto the brick A, and spray adhesive onto the pattern to obtain brick B;

[0114] S3. Using a high-precision dry granulation machine, gold dry granules are printed onto the brick body B according to the positioning pattern to obtain brick body C;

[0115] S4. Apply ultra-fine dry granule glaze to the brick body C using a glazing machine to obtain the brick body D;

[0116] S5. The brick body D is dried, fired at high temperature, polished, sorted and inspected to obtain the ceramic tile with charge-positioned gold dry particles;

[0117] The adhesive in step S2 comprises the following raw material components by mass percentage:

[0118] 100% polyvinyl alcohol solution;

[0119] The mixture of 0.1% silane coupling agent and 0.5% polycationic electrolyte was thoroughly mixed and sieved to obtain the final product.

[0120] The printing amount of the adhesive is 7 g / m². 2 ;

[0121] The specific gravity of the adhesive is controlled at 1.05 g / ml, and the viscosity is controlled at 25 mPa·s;

[0122] in:

[0123] The ultrafine dry granule glaze comprises the following raw material components by weight percentage:

[0124] The ultrafine dry granule glaze is prepared by mixing 50% ultrafine dry granules and 50% organic binder, and then sieving all raw materials evenly.

[0125] The specific gravity of the ultrafine dry granule glaze is 1.23±0.02 g / ml, and the application rate is 380~400 g / ml. 2 ;

[0126] The spraying pressure range of the ultrafine dry granule glaze is 0.4 to 0.6 MPa, forming a coating layer with a thickness of 0.1 to 0.3 mm on the surface of the positioned platinum / gold dry granules.

[0127] The ultrafine dry granule formulation comprises the following raw material components by weight percentage:

[0128] Potassium feldspar 15%, sodium feldspar 36%, calcite 13%, calcined talc 4%, alumina 9%, kaolin 6%, zirconium silicate 4%, glass powder 3%, zinc oxide 3%, strontium carbonate 3%, barium carbonate 4%;

[0129] Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water.

[0130] For details on the preparation steps of the ultrafine dry granules, please refer to the relevant content in the instruction manual.

[0131] The organic adhesive comprises the following raw material components in parts by weight:

[0132] 100 parts water, 8 parts hydroxypropyl methylcellulose, 5 parts ethylene glycol, 0.2 parts sodium tripolyphosphate, and 0.12 parts preservative were mixed evenly, finely ground, and sieved to prepare the organic adhesive.

[0133] The gold dry granules are gold dry granules with a "metal oxide / glass phase" composite structure, which can form a nanocrystalline layer on the surface after firing.

[0134] The gold granules comprise the following raw material components by weight percentage:

[0135] Aluminum silicate 40%, sodium silicate 20%, boric acid 10%, titanium dioxide 10%, pyrite powder 4%, copper oxide 6%, manganese oxide 4%, magnesium oxide 6%;

[0136] Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water.

[0137] The particle size range of the gold dry granules is controlled between 80 and 160 mesh.

[0138] The dry granule weight of the gold granules is 60-100 g / m². 2 .

[0139] For details on the specific preparation steps of the described gold dry granules, please refer to the relevant content in the instruction manual.

[0140] The positioning error of the high-precision dry pellet mill is ≤0.3mm.

[0141] The ceramic tile product with charge-positioned gold dry granules prepared in Example 2 met all the standard requirements. Performance test data are shown in Table 2.

[0142] Table 2. Performance characteristics of charge-positioned gold dry granules in ceramic tile products.

[0143]

[0144]

[0145] Example 3: Preparation method of charge-positioned platinum dry granules for ceramic tiles

[0146] The preparation method of Example 3 is the same as that of Example 2, the main difference being that the gold dry granules are replaced with platinum dry granules.

[0147] The platinum dry granules comprise the following raw material components by weight percentage:

[0148] Titanium oxide 55%, zirconium oxide 12%, tin oxide 8%, beryllium oxide 13%, cobalt oxide 1%, borax 11%;

[0149] Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water.

[0150] The ceramic tile product with charge-positioned platinum dry particles prepared in Example 3 has the same or similar performance as the results of Example 2, and all meet the standard requirements.

[0151] Table 3. Performance characteristics of charge-positioned platinum dry granule ceramic tile products.

[0152]

[0153]

[0154] Example 4: Preparation method of charge-positioned platinum / gold dry granules for ceramic tiles

[0155] Example 4 is prepared in the same way as Example 2 and Example 3, the main difference being that the gold granules and platinum granules are added in a weight ratio of 1:1.

[0156] The platinum dry granules comprise the following raw material components by weight percentage:

[0157] Titanium oxide 55%, zirconium oxide 12%, tin oxide 8%, beryllium oxide 13%, cobalt oxide 1%, borax 11%;

[0158] Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water.

[0159] The gold granules comprise the following raw material components by weight percentage:

[0160] Aluminum silicate 40%, sodium silicate 20%, boric acid 10%, titanium dioxide 10%, pyrite powder 4%, copper oxide 6%, manganese oxide 4%, magnesium oxide 6%;

[0161] Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water.

[0162] The ceramic tile product with charge-positioned platinum / gold dry particles prepared in Example 4 has the same or similar performance as the results of the previous examples, and all meet the standard requirements.

[0163] Table 4. Performance characteristics of charge-positioned platinum / gold dry granule ceramic tile products.

[0164]

[0165] In summary, the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any changes, modifications, and evolutions made by those skilled in the art without departing from the scope of the present invention based on the disclosed technical content shall be considered equivalent embodiments of the present invention. Furthermore, any changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present invention shall still fall within the protection scope of the present invention.

[0166] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0167] Experimental methods not specified in this invention are generally performed under conventional conditions or as recommended by the manufacturer.

[0168] Unless otherwise stated, the various optimized technical solutions in this invention can be combined with each other.

[0169] Unless otherwise stated, percentages and parts are percentages and parts by mass.

[0170] Experimental methods not specified in the instructions and examples are generally performed under standard conditions or as recommended by the manufacturer.

[0171] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as are familiar to those skilled in the art. Furthermore, any methods and materials similar to or equivalent to those described herein may be used in the methods of this invention.

Claims

1. A type of platinum granules, characterized in that: The platinum granules include: metal oxides and borax; During the high-temperature calcination process, the metal oxide and the glass network SiO2 in the ceramic tile glaze are fused together with borax to regulate the melting temperature and form a "metal oxide / glass phase" composite structure. After firing, platinum dry particles with a nanocrystalline layer can be formed on the surface. The platinum dry granules comprise the following raw material components by weight percentage: Titanium oxide 45-60%, zirconium oxide 10-20%, tin oxide 8-10%, beryllium oxide 10-20%, cobalt oxide 0.5-1.5%, borax 8-12%, the sum of the components is 100%; Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water.

2. The platinum granules according to claim 1, characterized in that: The platinum dry granules comprise the following raw material components by weight percentage: Titanium oxide 55%, zirconium oxide 12%, tin oxide 8%, beryllium oxide 13%, cobalt oxide 1%, borax 11%; Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water.

3. The platinum granules according to claim 1, characterized in that: The particle size range of the platinum dry granules is controlled between 80 and 160 mesh.

4. A method for preparing platinum dry granules as described in claim 1, characterized in that: The platinum dry granules mentioned above include the following preparation steps: Weigh the raw material components according to the corresponding formula ratio, mix the raw material components evenly, melt at 1250℃~1320℃, keep at the temperature for 2~3 hours, and then slowly cool to room temperature at a cooling rate of 6~20℃ / h to precipitate crystals. After crushing and screening into dry granules of 80~160 mesh, the platinum dry granules are obtained.

5. A method for preparing ceramic tiles with charge-positioned platinum dry particles, characterized in that: It includes the following preparation steps: S1. Apply a base glaze to the body to obtain brick body A; S2. Inkjet print the design pattern onto the brick A, and spray adhesive onto the pattern to obtain brick B; S3. Using a high-precision dry pellet mill, the platinum dry pellets of claim 1 are printed onto the brick body B according to the positioning pattern to obtain the brick body C; S4. Apply ultra-fine dry granule glaze to the brick body C using a glazing machine to obtain the brick body D; S5. The brick body D is dried, fired at high temperature, polished, sorted and inspected to obtain the ceramic tile with charge-positioned platinum dry particles; The adhesive comprises the following raw material components by weight percentage: 100% polyvinyl alcohol solution; The mixture of 0.1% silane coupling agent and 0.5% polycationic electrolyte was thoroughly mixed and sieved to obtain the final product.

6. The method for preparing ceramic tiles with charge-positioned platinum dry particles according to claim 5, characterized in that: a. The ultrafine dry granule glaze comprises the following raw material components by weight percentage: The ultrafine dry granules consist of 40-50% ultrafine dry particles and 50-60% organic binder, with the sum of all components being 100%. All raw materials are mixed evenly and sieved to prepare the ultrafine dry granule glaze. The ultrafine dry granules comprise the following raw material components by weight percentage: Potassium feldspar 10-25%, sodium feldspar 34-40%, calcite 11-17%, calcined talc 2-8%, alumina 6-12%, kaolin 3-8%, zirconium silicate 2-4%, glass powder 2-6%, zinc oxide 3-6%, strontium carbonate 2-6%, barium carbonate 2-6%, the sum of the components is 100%; Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water; The ultrafine dry granules include the following preparation steps: Weigh the raw material components according to the formula ratio, mix them evenly, melt them at 1550℃, keep them at the temperature for 10 to 12 hours, and then slowly cool them to room temperature at a cooling rate of 6 to 20℃ / h to precipitate crystals. After crushing and selecting 250 to 400 mesh dry particles, the ultrafine dry particles are prepared. The organic adhesive comprises the following raw material components in parts by weight: 100 parts water, 8 parts hydroxypropyl methylcellulose, 5 parts ethylene glycol, 0.2 parts sodium tripolyphosphate, and 0.12 parts preservative were mixed evenly, finely ground, and sieved to prepare the organic adhesive. And / or, b. The base glaze comprises the following raw material components by weight percentage: Potassium feldspar powder 35-45%, air-knife kaolin 10-15%, calcite 8-12%, wollastonite powder 3-6%, quartz powder 4-8%, barium carbonate 9-13%, zinc oxide 4-6%, calcined talc 8-12%, alumina 5-10%, the sum of all components is 100%; Add 0.14% sodium carboxymethyl cellulose and 0.2% sodium tripolyphosphate. Mix all raw materials evenly, and then ball mill, discharge the slurry, pass through a 325-mesh sieve and remove iron to prepare the base glaze.

7. The method for preparing ceramic tiles with charge-positioned platinum dry particles according to claim 6, characterized in that: The ultrafine dry granules comprise the following raw material components by weight percentage: Potassium feldspar 15%, sodium feldspar 36%, calcite 13%, calcined talc 4%, alumina 9%, kaolin 6%, zirconium silicate 4%, glass powder 3%, zinc oxide 3%, strontium carbonate 3%, barium carbonate 4%; Add 0.14% sodium carboxymethyl cellulose, 0.2% sodium tripolyphosphate, and an appropriate amount of water.

8. The method for preparing ceramic tiles with charge-positioned platinum dry particles according to claim 5, characterized in that: The positioning error of the high-precision dry pellet mill is ≤0.3 mm; The amount of adhesive sprayed in step S2 is 5-8 g / m. 2 ; The specific gravity of the adhesive is controlled within the range of 1.02 to 1.09 g / ml, and the viscosity is controlled within the range of 20 to 25 mpa.s. The amount of platinum dry pellets used in step S3 is 60-100 g / m². 2 ; In step S4, the spraying pressure range of the ultrafine dry granule glaze is 0.4 to 0.6 MPa, forming a covering layer with a thickness of 0.1 to 0.3 mm on the surface of the positioned platinum dry granules. The specific gravity of the ultrafine dry granule glaze in step S4 is 1.23 ± 0.02 g / ml, and the spraying amount is 380–400 g / ml. 2 ; In step S1, the specific gravity of the base glaze slurry is 1.86–1.98 g / ml, the flow rate is 35–65 seconds, and the application amount of the base glaze is 500–600 g / ml. 2 ; The high-temperature firing in step S5 adopts a staged temperature control method: Preheating section: 300~600℃, heating rate 8℃ / min; Firing section: 1180~1220℃, hold for 15~20min; The polishing process in step S5 uses 800-1500 grit diamond grinding blocks, with a polishing depth ≤0.05mm and a surface gloss controlled at 50-60 degrees. Step S5 also includes a waxing protection step: spraying a nano-sized siloxane protective layer.

9. A type of ceramic tile, characterized in that: The ceramic tile is prepared according to the preparation method described in claim 5.

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