Crystal glaze material and method for preparing ceramic product by using crystal glaze material

Abstract

The crystal glaze comprises the following components in parts by weight: 20-30 parts of quartz, 8-10 parts of yttrium oxide, 5-8 parts of titanium oxide, 12-15 parts of potassium feldspar, 5-8 parts of modified magnesium aluminate spinel, 6-8 parts of potassium oxide, 6-8 parts of aluminum oxide, 5-8 parts of magnesium oxide, 5-8 parts of a binder, 5-8 parts of a dispersant and 100-150 parts of water. According to the crystal glaze material and the method for preparing the ceramic product by using the crystal glaze material, the prepared ceramic product has good glaze crystallization effect and glossiness.

Description

Technical Field

[0001] The invention relates to the technical field of ceramics, and in particular to a crystallized glaze and a method for preparing a ceramic product using the glaze. Background Art

[0002] Ceramic products have the strength of metal, rich decorative effects, good wear resistance, and chemical stability. They are widely used in people's daily lives and are deeply loved by people. At present, people pay special attention to ceramic decoration. Crystalline glaze is a very promising decorative method. They give ceramic products exquisite and unique patterns on the surface. Crystalline glaze is a low-melting point glass attached to ceramics. It partially crystallizes under firing to form crystals of various types, sizes and shapes. The size of the crystal flower is related to factors such as formula composition, firing process, and preparation process. Summary of the invention

[0003] In view of this, the object of the present invention is to provide a crystalline glaze and a method for preparing a ceramic product using the glaze, wherein the prepared ceramic product has good glaze surface crystallization effect and glossiness.

[0004] In order to achieve the above object, the present invention provides the following technical solutions: A crystalline glaze comprises the following components in parts by weight: 20-30 parts of quartz, 8-10 parts of yttrium oxide, 5-8 parts of titanium oxide, 12-15 parts of potassium feldspar, 5-8 parts of modified magnesium aluminum spinel, 6-8 parts of potassium oxide, 6-8 parts of aluminum oxide, 5-8 parts of magnesium oxide, 5-8 parts of a binder, 5-8 parts of a dispersant and 100-150 parts of water.

[0005] Preferably, the binder is sodium hydroxymethyl cellulose, and the dispersant is sodium polyacrylate.

[0006] A method for preparing a ceramic product using a crystalline glaze comprises the following steps: S1: making a ceramic body for standby use; S2: applying a crystalline glaze on the ceramic body, wherein the concentration of the crystalline glaze is 50-55 degrees Baume; S3: firing the ceramic body after the crystallization glaze is applied to obtain a ceramic product.

[0007] Preferably, the ceramic body is fired at a temperature of 600°C at a heating rate of 10°C / min, kept at that temperature for 1-2h, then heated to 1400°C at 2°C / min, and finally heated to 1600°C at 5°C / min, kept at that temperature for 4-6h.

[0008] Preferably, the preparation method of the crystalline glaze is specifically as follows: Quartz, yttrium oxide, titanium oxide, potassium feldspar, modified magnesium aluminum spinel, potassium oxide, aluminum oxide, magnesium oxide, a binder, a dispersant and water are added into a ball mill for ball milling, and then sieved to obtain a crystalline glaze.

[0009] Preferably, the preparation method of the modified magnesium-aluminum spinel comprises: Magnesium aluminum spinel, lithium fluoride, polyvinyl pyrrolidone, 75% by volume ammonia water, KH570 coupling agent and anhydrous ethanol are mixed, magnetically stirred for 1-2 hours, and dried at 60° C. to obtain modified magnesium aluminum spinel.

[0010] Preferably, the weight ratio of the magnesium aluminum spinel, lithium fluoride, polyvinyl pyrrolidone, ammonia water, KH570 coupling agent and anhydrous ethanol is 20:1:20:40:20:50.

[0011] Preferably, the glazing in step S2 is spraying glazing, and the thickness of the glaze layer is 2-3 mm.

[0012] The invention modifies magnesium aluminum spinel and controls the melting temperature of lithium fluoride, firstly quickly heats up the temperature so that lithium fluoride enters an unstable semi-molten state and is evenly distributed on the surface of the green body. At this time, the organic matter used for modification on the surface of the ceramic green body is slowly decomposed, and the pores on the surface of the green body slowly migrate. Then, the temperature is continued to be raised at a low speed so that lithium fluoride is completely melted and melted from the surface of the green body into the interior of the green body through capillary action, thereby promoting the densification of the ceramic. 3+ Ions can promote the transfer of energy, allowing crystals to melt into the glaze, and the high-temperature viscosity of the glaze gradually decreases, which accelerates the migration of crystals, promotes crystal development, and improves the crystallization effect. Finally, the temperature gradually increases in the later stage, and after sintering, the components in the glaze penetrate into the surface layer of the body, and the components in the body also diffuse or melt into the glaze to form an intermediate layer, which alleviates the stress in the glaze layer, improves the crystallinity of the ceramic unit cell, reduces the crystallization temperature, and promotes grain growth and forming. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. In addition, it is specifically stated that the raw materials and equipment of the present invention can be obtained from commercial sources, and no longer listed one by one. Among them, the raw materials of the present invention can be obtained from commercial sources and are well known to those skilled in the art. Example 1

[0014] A crystalline glaze comprises the following components in parts by weight: 20 parts of quartz, 8 parts of yttrium oxide, 5 parts of titanium oxide, 12 parts of potassium feldspar, 5 parts of modified magnesium aluminum spinel, 6 parts of potassium oxide, 6 parts of aluminum oxide, 5 parts of magnesium oxide, 5 parts of sodium hydroxymethyl cellulose, 5 parts of sodium polyacrylate and 100 parts of water.

[0015] A method for preparing a ceramic product using a crystalline glaze comprises the following steps: S1: making a ceramic body for standby use; S2: Apply crystalline glaze on the ceramic body, the concentration of the crystalline glaze is 50-55 degrees Baume, the glazing is sprayed, and the thickness of the glaze layer is 2-3mm; The preparation method of the crystalline glaze is specifically as follows: The quartz, yttrium oxide, titanium oxide, potassium feldspar, modified magnesium aluminum spinel, potassium oxide, aluminum oxide, magnesium oxide, a binder, a dispersant and water are added into a ball mill for ball milling, and then sieved to obtain a crystalline glaze; Wherein, the preparation method of modified magnesium aluminum spinel comprises: Magnesium aluminum spinel, lithium fluoride, polyvinyl pyrrolidone, 75% ammonia water by volume, KH570 coupling agent and anhydrous ethanol were mixed in a weight ratio of 20:1:20:40:20:50, magnetically stirred for 1 hour, and dried at 60° C. to obtain modified magnesium aluminum spinel; S3: firing the ceramic body after applying the crystallized glaze, the firing temperature is to increase the temperature to 600°C at a heating rate of 10°C / min, keep it at that temperature for 1 hour, then increase the temperature to 1400°C at 2°C / min, and finally increase the temperature to 1600°C at 5°C / min, keep it at that temperature for 4 hours, to obtain a ceramic product. Example 2

[0016] A crystalline glaze comprises the following components in parts by weight: 30 parts of quartz, 10 parts of yttrium oxide, 8 parts of titanium oxide, 15 parts of potassium feldspar, 8 parts of modified magnesium aluminum spinel, 8 parts of potassium oxide, 8 parts of aluminum oxide, 8 parts of magnesium oxide, 8 parts of sodium hydroxymethyl cellulose, 8 parts of sodium polyacrylate and 150 parts of water.

[0017] A method for preparing a ceramic product using a crystalline glaze comprises the following steps: S1: making a ceramic body for standby use; S2: Apply crystalline glaze on the ceramic body, the concentration of the crystalline glaze is 50-55 degrees Baume, the glazing is sprayed, and the thickness of the glaze layer is 2-3mm; The preparation method of the crystalline glaze is specifically as follows: The quartz, yttrium oxide, titanium oxide, potassium feldspar, modified magnesium aluminum spinel, potassium oxide, aluminum oxide, magnesium oxide, a binder, a dispersant and water are added into a ball mill for ball milling, and then sieved to obtain a crystalline glaze; Wherein, the preparation method of modified magnesium aluminum spinel comprises: Magnesium aluminum spinel, lithium fluoride, polyvinyl pyrrolidone, 75% ammonia water by volume, KH570 coupling agent and anhydrous ethanol were mixed in a weight ratio of 20:1:20:40:20:50, magnetically stirred for 2 hours, and dried at 60° C. to obtain modified magnesium aluminum spinel; S3: firing the ceramic body after applying the crystallized glaze, the firing temperature is to increase the temperature to 600°C at a heating rate of 10°C / min, keep it at that temperature for 2 hours, then increase the temperature to 1400°C at 2°C / min, and finally increase the temperature to 1600°C at 5°C / min, keep it at that temperature for 6 hours, to obtain a ceramic product. Example 3

[0018] A crystalline glaze comprises the following components in parts by weight: 25 parts of quartz, 9 parts of yttrium oxide, 6 parts of titanium oxide, 13 parts of potassium feldspar, 6 parts of modified magnesium aluminum spinel, 7 parts of potassium oxide, 7 parts of aluminum oxide, 6 parts of magnesium oxide, 6 parts of sodium hydroxymethyl cellulose, 6 parts of sodium polyacrylate and 120 parts of water.

[0019] A method for preparing a ceramic product using a crystalline glaze comprises the following steps: S1: making a ceramic body for standby use; S2: Apply crystalline glaze on the ceramic body, the concentration of the crystalline glaze is 50-55 degrees Baume, the glazing is sprayed, and the thickness of the glaze layer is 2-3mm; The preparation method of the crystalline glaze is specifically as follows: The quartz, yttrium oxide, titanium oxide, potassium feldspar, modified magnesium aluminum spinel, potassium oxide, aluminum oxide, magnesium oxide, a binder, a dispersant and water are added into a ball mill for ball milling, and then sieved to obtain a crystalline glaze; Wherein, the preparation method of modified magnesium aluminum spinel comprises: Magnesium aluminum spinel, lithium fluoride, polyvinyl pyrrolidone, 75% ammonia water by volume, KH570 coupling agent and anhydrous ethanol were mixed in a weight ratio of 20:1:20:40:20:50, magnetically stirred for 1.5 hours, and dried at 60° C. to obtain modified magnesium aluminum spinel; S3: firing the ceramic body after applying the crystallized glaze, the firing temperature is to increase the temperature to 600°C at a heating rate of 10°C / min, keep it at that temperature for 1.5 hours, then increase the temperature to 1400°C at 2°C / min, and finally increase the temperature to 1600°C at 5°C / min, keep it at that temperature for 5 hours, to obtain a ceramic product. Comparative Example 1

[0020] The preparation method of Comparative Example 1 is basically the same as that of Example 1, except that yttrium oxide and modified magnesium aluminum spinel are not used and the sintering is performed directly, specifically: A crystalline glaze comprises the following components in parts by weight: 20 parts of quartz, 5 parts of titanium oxide, 12 parts of potassium feldspar, 6 parts of potassium oxide, 6 parts of aluminum oxide, 5 parts of magnesium oxide, 5 parts of sodium hydroxymethyl cellulose, 5 parts of sodium polyacrylate and 100 parts of water.

[0021] A method for preparing a ceramic product using a crystalline glaze comprises the following steps: S1: making a ceramic body for standby use; S2: Apply crystalline glaze on the ceramic body, the concentration of the crystalline glaze is 50-55 degrees Baume, the glazing is sprayed, and the thickness of the glaze layer is 2-3mm; The preparation method of the crystalline glaze is specifically as follows: The quartz, titanium oxide, potassium feldspar, potassium oxide, aluminum oxide, magnesium oxide, a binder, a dispersant and water are added into a ball mill for ball milling, and then sieved to obtain a crystalline glaze; S3: firing the ceramic body after applying the crystallized glaze, the firing temperature is raised to 1600° C. at a heating rate of 10° C. / min, and kept at this temperature for 4 hours to obtain a ceramic product.

[0022] The ceramics prepared in Examples 1-3 and Comparative Example 1 of the present invention were subjected to performance tests, and the test results are shown in Table 1.

[0023] Gloss: Tested using a photoelectric gloss meter in accordance with the national standard GB / T3295-1996 Ceramic Products 45° Mirror Gloss Test Method.

[0024] Mechanical strength: Tested in accordance with GB / T 4740-1999.

[0025] Table 1 Test data of Examples 1-3 and Comparative Example 1

[0026] It can be seen from the above table that the ceramic product comparative example 1 of embodiments 1-3 has good glaze crystallization effect and glossiness.

[0027] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A crystalline glaze, characterized in that: The invention comprises the following components in parts by weight: 20-30 parts of quartz, 8-10 parts of yttrium oxide, 5-8 parts of titanium oxide, 12-15 parts of potassium feldspar, 5-8 parts of modified magnesium aluminum spinel, 6-8 parts of potassium oxide, 6-8 parts of aluminum oxide, 5-8 parts of magnesium oxide, 5-8 parts of binder, 5-8 parts of dispersant and 100-150 parts of water.

2. The crystalline glaze according to claim 1, characterized in that: The binder is sodium hydroxymethyl cellulose, and the dispersant is sodium polyacrylate.

3. A method for preparing a ceramic product using the crystalline glaze according to claim 1, characterized in that: The following steps are involved: S1: making a ceramic body for standby use; S2: applying a crystalline glaze on the ceramic body, wherein the concentration of the crystalline glaze is 50-55 degrees Baume; S3: firing the ceramic body after the crystallization glaze is applied to obtain a ceramic product.

4. The method for preparing a ceramic product using a crystalline glaze according to claim 3, characterized in that: The firing temperature of the ceramic body is raised to 600°C at a heating rate of 10°C / min, kept at that temperature for 1-2h, then raised to 1400°C at 2°C / min, and finally raised to 1600°C at 5°C / min, kept at that temperature for 4-6h.

5. The method for preparing a ceramic product by using a crystallized glaze according to claim 1, characterized in that: The preparation method of the crystalline glaze is specifically as follows: Quartz, yttrium oxide, titanium oxide, potassium feldspar, modified magnesium aluminum spinel, potassium oxide, aluminum oxide, magnesium oxide, a binder, a dispersant and water are added into a ball mill for ball milling, and then sieved to obtain a crystalline glaze.

6. The method for preparing a ceramic product by using a crystallized glaze according to claim 5, characterized in that: The preparation method of the modified magnesium aluminum spinel comprises: Magnesium aluminum spinel, lithium fluoride, polyvinyl pyrrolidone, 75% by volume ammonia water, KH570 coupling agent and anhydrous ethanol are mixed, magnetically stirred for 1-2 hours, and dried at 60° C. to obtain modified magnesium aluminum spinel.

7. The method for preparing a ceramic product by using a crystallized glaze according to claim 6, characterized in that: The weight ratio of the magnesium aluminum spinel, lithium fluoride, polyvinyl pyrrolidone, ammonia water, KH570 coupling agent and anhydrous ethanol is 20:1:20:40:20:

50.

8. The method for preparing a ceramic product by using a crystallized glaze according to claim 3, characterized in that: In step S2, the glazing is performed by spraying, and the thickness of the glaze layer is 2-3 mm.

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