Multicolored glazed ceramic and method for manufacturing the same

Abstract

The present application relates to the field of ceramic and its preparation process, in particular to a kind of multi-color glazed ceramic and its preparation method, multi-color glazed ceramic includes body and glaze, the body top is distributed with pit, and white spot is distributed on glaze.The glaze of body main part presents milk yellow matt glaze effect after glazing, and it has circular white spot under glaze, and special honeycomb pit is formed in top by cotton ball suction paste process, and multi-color bright surface glass is inlaid in pit bottom, and matt glaze and local bright glaze process are combined, with strong visual contrast.

Description

Technical Field

[0001] This invention relates to the field of ceramics and their preparation processes, specifically to multi-colored glazed ceramics and their preparation methods. Background Technology

[0002] Adding an opaque agent to a glaze can give it a matte finish. To achieve a good matte finish, the fineness of the opaque agent and the uniformity of the raw material mixing are crucial. Glazes with added opaque agents need to be repeatedly sieved to ensure a relatively uniform overall particle size. However, the opaque agent can also cover up patterns of other colors under the glaze, resulting in a matte finish with only one color. It is impossible to display patterns of other colors under the glaze or to create localized glossy glaze effects on a matte surface. Different colored patterns can only be added through overglaze painting or other methods. Therefore, this case arises. Summary of the Invention

[0003] One object of the present invention is to solve at least the above-mentioned problems through multicolored glazed ceramics and their preparation methods.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: multi-colored glazed ceramic, including a body and a glaze, wherein the top of the body has pits and the glaze has white spots.

[0005] Preferably, the raw materials for the glaze, by weight, include the following components: 40-50 parts quartz, 20-30 parts feldspar, 20-30 parts kaolin, 10-15 parts limestone, 5-8 parts sodium alkali, 2-3 parts hematite, 3-4 parts zircon sand, and 4-5 parts zirconium oxide.

[0006] Preferably, the raw materials of the blank body, by weight, include the following components: 50-60 parts kaolin, 15-18 parts potassium feldspar, 5-8 parts bentonite, and 10-15 parts quartz.

[0007] Preferably, the recess is inlaid with colored glass, and the raw material of the colored glass is colored frit.

[0008] Preferably, the raw materials of the colored frit, by weight, include the following components: 60-70 parts of quartz sand, 15-18 parts of borax, 7-10 parts of boric acid, 3-5 parts of limestone, 5-9 parts of barite, 8-10 parts of barium carbonate, 8-10 parts of feldspar, 10-12 parts of soda ash, 2-3 parts of phosphate, and 2-3 parts of cobalt oxide.

[0009] Preferably, the raw materials of the colored frit, by weight, include the following components: 65-75 parts of quartz sand, 10-15 parts of borax, 7-10 parts of boric acid, 6-8 parts of limestone, 3-5 parts of barite, 7-9 parts of barium carbonate, 8-10 parts of feldspar, 8-10 parts of soda ash, 2-3 parts of cobalt oxide, and 2-3 parts of zinc oxide.

[0010] Preferably, the raw materials of the colored frit, by weight, include the following components: 55-65 parts of quartz sand, 15-18 parts of borax, 6-8 parts of boric acid, 10-12 parts of limestone, 4-5 parts of barite, 6-8 parts of barium carbonate, 8-10 parts of feldspar, 10-12 parts of soda ash, 2-3 parts of tin dioxide, and 1-2 parts of vanadium pentoxide.

[0011] The preparation method of the above-mentioned multi-colored glazed ceramics includes the following steps:

[0012] Step a: First, form the blank body, and then form closely arranged pits on the top of the blank body;

[0013] Step b: The green body is placed in the kiln for bisque firing at a temperature of 800-900 degrees Celsius.

[0014] Step c: Apply a surface glaze to the surface of the blank;

[0015] Step d: The blank is placed in the kiln for glaze firing at a temperature of 1180-1220 degrees Celsius.

[0016] Preferably, in step a, the lower 3 / 4 of the cotton ball is immersed in the mud, and multiple cotton balls that have absorbed the mud are placed close together on the top of the blank body. The bottom of the cotton ball is adhered to the top of the blank body, and the cotton balls are bonded to each other. When placing the cotton balls, they are arranged to spread outward from the center of the top of the blank body. Finally, the blank body is dried again.

[0017] Preferably, in step c, the zircon sand in the glaze is ground and passed through a 50-mesh screen, the zircon oxide in the glaze is passed through a 150-200 mesh screen, and the raw material of the colored frit is ground, mixed, stirred, fired and cooled, then broken into colored frit. After the glaze is applied to the body, the colored frit is added into the pit.

[0018] As can be seen from the above description, the multicolored glazed ceramics and their preparation method provided by the present invention have the following beneficial effects: after glazing and firing, the glaze surface of the main body of the body presents a milky yellow matte glaze effect, with circular white spots under the glaze, and the top is formed into a special honeycomb-shaped pit by a cotton ball slurry absorption process. Colorful glossy glass is inlaid at the bottom of the pit, combining the matte glaze and the local glossy glaze process, which has a strong visual contrast. Detailed Implementation

[0019] The present invention will be further described below through specific embodiments.

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] The multicolored glazed ceramic of the present invention includes a body and a glaze. The top of the body has pits and the glaze has white spots.

[0022] The raw materials for the glaze, by weight, include the following components: quartz 40-50 parts, feldspar 20-30 parts, porcelain clay 20-30 parts, limestone 10-15 parts, sodium hydroxide 5-8 parts, hematite 2-3 parts, zircon sand 3-4 parts, and zirconium oxide 4-5 parts. Zirconium particles act as an opacifier, giving the glaze a matte finish. The zirconium dioxide is ground to a very fine particle size to increase the glaze's opacity, while the zircon sand has a larger particle size. During the glaze firing process, the zircon sand particles act as a core, easily attracting surrounding zirconium dioxide particles, thus forming white spots on the matte, milky-yellow glaze surface.

[0023] The raw materials for the green body, by weight, include the following components: 50-60 parts kaolin, 15-18 parts potassium feldspar, 5-8 parts bentonite, and 10-15 parts quartz.

[0024] The recess is inlaid with colored glass, which is made from colored fused metal.

[0025] The raw material formulations for colored frits include, but are not limited to, the following examples:

[0026] Example 1: The raw materials for the colored frit, by weight, include the following components: 60-70 parts quartz sand, 15-18 parts borax, 7-10 parts boric acid, 3-5 parts limestone, 5-9 parts barite, 8-10 parts barium carbonate, 8-10 parts feldspar, 10-12 parts soda ash, 2-3 parts phosphate, and 2-3 parts cobalt oxide. The glaze contains phosphate, cobalt oxide, and magnesium oxide simultaneously; the mixing reaction during glazing results in a dark purple hue for the colored glass.

[0027] Example 2: The raw materials for the colored frit, by weight, include the following components: 65-75 parts quartz sand, 10-15 parts borax, 7-10 parts boric acid, 6-8 parts limestone, 3-5 parts barite, 7-9 parts barium carbonate, 8-10 parts feldspar, 8-10 parts soda ash, 2-3 parts cobalt oxide, and 2-3 parts zinc oxide. The cobalt oxide and zinc oxide present in the glaze give the colored glass its blue color.

[0028] Example 3: The raw materials for the colored frit, by weight, include the following components: 55-65 parts quartz sand, 15-18 parts borax, 6-8 parts boric acid, 10-12 parts limestone, 4-5 parts barite, 6-8 parts barium carbonate, 8-10 parts feldspar, 10-12 parts soda ash, 2-3 parts tin dioxide, and 1-2 parts vanadium pentoxide. The tin oxide and vanadium pentoxide present in the glaze give the colored glass a yellow hue. The raw material formula for the colored peel glaze includes, but is not limited to, the above three formulas. By adding different formulas of colored frit to the pits, the glass at the bottom of the pits can exhibit different colors. The honeycomb-shaped body at the top of the blank is inlaid with colorful glass, creating a unique aesthetic.

[0029] The preparation method of multi-colored glazed ceramics includes the following steps:

[0030] Step a: First, form the blank body. The top of the blank body is a flat or curved surface. Then, form closely arranged pits on the top of the blank body and dry it to obtain the blank body.

[0031] Step b: The green body is placed in the kiln for bisque firing at a temperature of 800-900 degrees Celsius.

[0032] Step c: Apply a surface glaze to the surface of the blank;

[0033] Step d: The body is placed in the kiln for glaze firing at a temperature of 1180-1220 degrees Celsius. After glaze firing, the glaze surface of the main body of the body exhibits a milky yellow matte glaze effect, with circular white spots under the glaze, and the pits at the top are closely arranged to form a honeycomb pattern. Colorful glossy glass is inlaid at the bottom of the pits. The combination of matte glaze and partial glossy glaze creates a strong visual contrast and gives the whole piece a unique artistic beauty.

[0034] In step a, the lower three-quarters of a cotton ball is immersed in the slurry. Multiple cotton balls that have absorbed the slurry are placed close together on top of the blank, with the bottoms of the cotton balls adhering to the top of the blank. The cotton balls are bonded to each other, spreading outward from the center of the top of the blank during placement. Finally, the blank is dried again. Because the cotton balls are tightly connected, they are bonded together by the slurry. During bisque firing, the cotton balls gradually decompose, and the slurry inside them accumulates to form the walls of the pits. Through this special method of forming the blank using cotton balls to absorb slurry, a thin-walled honeycomb shape is formed on the top of the blank.

[0035] In step c, the zircon sand in the glaze is ground and passed through a 50-mesh screen, while the zirconium oxide in the glaze is passed through a 150-200 mesh screen. The raw materials for the colored frit are ground, mixed, stirred, fired, and cooled, then broken into colored frits. After applying the glaze to the body, the colored frits are added to the recesses. In the glaze of this invention, the finer the zircon particles, the higher the opacity. The finer zirconium oxide particles act as an opaque agent, giving the glaze a matte finish. The larger zircon sand particles act as a core, adsorbing the surrounding zirconium oxide particles and forming white spots on the glaze surface. Because the zirconium particles around the white spots are adsorbed, the glaze in the small area around the white spots does not contain opaque agents, thus forming a bright ring pattern around the white spots, making the boundary between the white spots and the glaze clear. During the glaze firing process, the colored frits melt and break in the recesses, fusing with the glaze in the recesses. The glaze applied in the recesses is 2-3 mm thicker than other parts of the body, and the colored frits have a large particle size, controlled to be within 5 μm. Below m, colored frits are inserted into the glaze within the recesses. Due to the large thickness of the colored glass formed by the glaze and colored frits within the recesses, and the significant difference in expansion and contraction rates between the glass and the blank, the colored glass will crack during the cooling process, forming colored glass-like crystals with cracks. These crystals also contain milky yellow veins of the same color as the glaze, making the patterns of the colored glass richer. The same type of colored frit can be added to the same recess to present a single color, or different colored frits can be added to present a mixture of colors. The recesses inlaid with multicolored glass resemble colorful pools, while the milky yellow matte glaze with white spots resembles the earth, creating a unique artistic aesthetic.

[0036] The above are merely some specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A method for preparing multi-colored glazed ceramics, characterized in that: The multicolored glazed ceramics include a body and a glaze. The top of the body has pits, and the glaze has white spots. Colored glass is inlaid in the pits, and the raw material of the colored glass is colored frit. The raw material of the glaze, by weight, includes the following components: quartz 40-50 parts, feldspar 20-30 parts, kaolin 20-30 parts, limestone 10-15 parts, sodium alkali 5-8 parts, hematite 2-3 parts, zircon sand 3-4 parts, and zirconium oxide 4-5 parts. The preparation method of multi-colored glazed ceramics includes the following steps: Step a: First, form the blank body, and then form closely arranged pits on the top of the blank body; Step b: The green body is placed in the kiln for bisque firing at a temperature of 800-900 degrees Celsius. Step c: The zircon sand in the glaze is ground and passed through a 50-mesh screen, and the zirconium oxide in the glaze is passed through a 150-200-mesh screen. The raw materials of the colored frit are ground, mixed, stirred, fired and cooled, and then broken into colored frits. After the glaze is applied to the body, colored frits are added to the pits. Step d: The blank is placed in the kiln for glaze firing at a temperature of 1180-1220 degrees Celsius. In step a, the lower 3 / 4 of the cotton ball is immersed in the mud. Multiple cotton balls that have absorbed the mud are placed close together on the top of the blank body. The bottom of the cotton ball is attached to the top of the blank body, and the cotton balls are bonded to each other. When placing the cotton balls, they are arranged to spread outward from the center of the top of the blank body. Finally, the blank body is dried again.

2. The method for preparing multi-colored glazed ceramics according to claim 1, characterized in that: The raw materials of the blank body, by weight, include the following components: 50-60 parts kaolin, 15-18 parts potassium feldspar, 5-8 parts bentonite, and 10-15 parts quartz.

3. The method for preparing multi-colored glazed ceramics according to claim 1, characterized in that: The raw materials of the colored frit, by weight, include the following components: 60-70 parts of quartz sand, 15-18 parts of borax, 7-10 parts of boric acid, 3-5 parts of limestone, 5-9 parts of barite, 8-10 parts of barium carbonate, 8-10 parts of feldspar, 10-12 parts of soda ash, 2-3 parts of phosphate, and 2-3 parts of cobalt oxide.

4. The method for preparing multi-colored glazed ceramics according to claim 1, characterized in that: The raw materials of the colored frit, by weight, include the following components: 65-75 parts quartz sand, 10-15 parts borax, 7-10 parts boric acid, 6-8 parts limestone, 3-5 parts barite, 7-9 parts barium carbonate, 8-10 parts feldspar, 8-10 parts soda ash, 2-3 parts cobalt oxide, and 2-3 parts zinc oxide.

5. The method for preparing multi-colored glazed ceramics according to claim 1, characterized in that: The raw materials of the colored frit, by weight, include the following components: 55-65 parts quartz sand, 15-18 parts borax, 6-8 parts boric acid, 10-12 parts limestone, 4-5 parts barite, 6-8 parts barium carbonate, 8-10 parts feldspar, 10-12 parts soda ash, 2-3 parts tin dioxide, and 1-2 parts vanadium pentoxide.