CN114835476A - High-strength blue-and-white five-color glazed porcelain and preparation method thereof - Google Patents
High-strength blue-and-white five-color glazed porcelain and preparation method thereof Download PDFInfo
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- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
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Abstract
A high-strength blue and white five-color glazed porcelain and a preparation method thereof, the blue and white five-color glazed porcelain comprises a green body and a blue and white pattern, a transparent glaze layer and a colored drawing pattern which are sequentially attached on the green body; the blue and white pattern is formed by drawing blue and white pigment on the blank, and the blue and white pigment is composed of the following raw materials: cobalt oxide, sodium oxide, manganese oxide, potassium oxide, kaolin, germanized quartz, magnesite; the transparent glaze layer is composed of the following raw materials: the invention discloses a process for preparing blue and white enamel porcelain, which comprises the steps of German quartz, albite, silica micropowder, bentonite, potassium feldspar, white clay, frit, zinc oxide and aluminum oxide.
Description
Technical Field
The invention belongs to the field of preparation of enamel, and particularly relates to high-strength blue-and-white five-color enamel and a preparation method thereof.
Background
The five-color porcelain is divided into an over-glaze five-color porcelain and a blue-and-white five-color porcelain. The five-color porcelain is not required to have five colors, and the amount of the colored porcelain is determined according to the overall decorative effect. The over-glaze five-color porcelain is made by painting on the fired white porcelain and firing in a kiln at 700-800 deg.C, and the process is simple. The blue and white five-color porcelain is relatively complex in firing process, a blue and white material is firstly used for drawing a certain pattern on a blank, a transparent glaze is covered on the blank, the blank is placed into a kiln for firing, then red, yellow, green, purple, ochre and other colors are used for drawing on the fired porcelain, and finally the blank is placed into the kiln for firing. The blue and white five-color porcelain on the market at present is not enough in strength, is easy to damage, does not change transportation, and needs to be further improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-strength blue and white five-color glazed porcelain, and also aims to provide a preparation method of the blue and white five-color glazed porcelain.
The invention adopts the following technical scheme:
a high-strength blue-and-white five-color glazed porcelain comprises a blank body, and a blue-and-white pattern, a transparent glaze layer and a colored drawing pattern which are sequentially attached to the blank body;
the blue and white pattern is formed by drawing a blue and white pigment on the blank, wherein the blue and white pigment is composed of the following raw materials in parts by weight: 30-40 parts of cobalt oxide, 5-10 parts of sodium oxide, 3-5 parts of manganese oxide, 6-8 parts of potassium oxide, 10-12 parts of kaolin, 10-15 parts of germanized quartz and 6-12 parts of magnesite;
the transparent glaze layer is composed of the following raw materials in parts by weight: 20-30 parts of germanized quartz, 12-18 parts of albite, 3-5 parts of silicon micropowder, 5-7 parts of bentonite, 10-15 parts of potassium feldspar, 5-10 parts of argil, 2-5 parts of frit, 5-8 parts of zinc oxide and 5-10 parts of aluminum oxide.
Further, the frit has the following chemical composition: : SiO 2 2 ：69.25％、Al 2 O 3 ：12.76％、ZnO：7.39％、ZrO 2 ：1.25％、MgO：4.82％、La 2 O 3 ：0.86％、CaO：3.67％。
Furthermore, the colored drawing pattern is formed by drawing a colored drawing pigment on the transparent glaze layer, wherein the colored drawing pigment is composed of the following raw materials in parts by weight: 50-70 parts of color agent, 15-20 parts of quartz, 10-15 parts of feldspar, 5-7 parts of zinc oxide, 3-5 parts of magnesium oxide, 1-2 parts of lanthanum oxide and 1-3 parts of zirconium oxide.
Further, the blank body is composed of the following raw materials in parts by weight: 20-30 parts of albite, 25-35 parts of germanized quartz, 10-18 parts of germanized kaolin, 5-10 parts of dolomite, 5-10 parts of opal, 3-5 parts of zinc oxide and 1-2 parts of zirconium oxide.
A preparation process of high-strength blue and white five-color glazed porcelain comprises the following steps:
step one, weighing, crushing, mixing and wet ball milling raw materials of a blank to prepare slurry;
step two, weighing, crushing, mixing and wet ball milling the raw materials of the transparent glaze layer to prepare transparent glaze slip;
step three, preparing blue and white pigments and colored drawing pigments;
step four, sieving the slurry prepared in the step one, removing iron, preparing a blank, and after the surface of the blank is dried, drawing a blue and white pattern on the surface of the blank by using the blue and white pigment prepared in the step three;
step five, after the blue and white patterns are dried, the transparent glaze slurry prepared in the step two is applied on the blue and white patterns to form a transparent glaze slurry layer;
sixthly, after the transparent glaze slurry layer is dried, sending the transparent glaze slurry layer into a kiln, biscuiting for 10-12h at the temperature of 1120-1150 ℃, and cooling to obtain a biscuit;
and seventhly, carrying out colored drawing on the surface of the biscuit by using colored drawing pigment to form a colored drawing pattern, drying the colored drawing pattern, sending the dried colored drawing pattern into a kiln, and firing for 4-6h at the temperature of 720-750 ℃ to obtain the blue-and-white five-color glazed porcelain.
Further, in the third step, the preparation method of the blue and white pigment comprises: weighing cobalt oxide, sodium oxide, manganese oxide and potassium oxide according to parts by weight, firstly mixing uniformly in a mixer, then placing in a kiln, and calcining for 1-2h at 1220-; and then cooling the calcined material, crushing the calcined material into particles with the particle size of 1mm, cleaning the particles, mixing the particles with other blue and white pigment raw materials, and carrying out wet ball milling to obtain the blue and white pigment.
Further, in the fifth step, the glazing mode of the transparent glaze slip is glaze spraying; the thickness of the transparent glaze layer is 0.3-0.4 mm.
Further, in the sixth step, the firing atmosphere of the biscuit is a reducing atmosphere, wherein the concentration of carbon monoxide is 4.3-4.8%, and the concentration of free oxygen is 1-1.2%.
Further, in the step one, when wet ball milling is carried out on the slurry, the raw materials are wet-milled for 20-24 hours in a ball mill, the grinding medium is water, and the raw materials: ball: water-1: 1.2-1.5: 1-1.2.
Further, in the second step, when the transparent glaze slip is wet-ball milled, the raw materials are wet-milled in a ball mill for 36-42 hours, the milling medium is water, and the raw materials: ball: water-1: 1.8-2: 1.2-1.5.
As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are:
firstly, the raw material composition of the blue and white glaze porcelain is limited to be matched with a specific firing process, so that the prepared blue and white glaze porcelain is matched with each other with a blue and white pattern as a bottom and a colored drawing pattern as an upper, and has great ornamental value; the specific composition of the transparent glaze layer is limited, so that the surface tension of the glaze is larger, the glaze is fired in cooperation with the blue and white pigment, the blue and white pigment is relatively stable in color development, the blue and white pigment cannot be smoked, the brilliance of the blue and white pigment can be obviously improved, the decorative effect is better and more vivid, and the ornamental value of the blue and white five-color glazed porcelain is improved;
secondly, by limiting the specific chemical composition of the frit, although the adopted raw materials are common raw materials, the raw materials have mutual synergistic action through reasonable raw material composition and part adjustment, and by limiting the matching of zirconium oxide, lanthanum oxide and silicon dioxide and matching with a specific firing process, the surface strength of a fired biscuit is improved, and further the strength of the blue-and-white five-color glazed porcelain is improved, so that the blue-and-white five-color glazed porcelain is convenient to transport and is not easy to damage;
thirdly, by limiting the raw material composition of the body, the dolomite and the opal are matched with the zinc oxide and the zirconium oxide, the whiteness and the uniformity of the surface of the prepared body are ensured, the color development influence of the body on a glaze surface is prevented, the appearance performance of the porcelain is ensured, and the ornamental value of the blue-and-white five-color glazed porcelain is further improved.
Detailed Description
The invention is further described below by means of specific embodiments.
A high-strength blue-and-white five-color glazed porcelain comprises a blank body, and a blue-and-white pattern, a transparent glaze layer and a colored drawing pattern which are sequentially attached to the blank body.
The blank body is composed of the following raw materials in parts by weight: 20-30 parts of albite, 25-35 parts of germanized quartz, 10-18 parts of germanized kaolin, 5-10 parts of dolomite, 5-10 parts of opal, 3-5 parts of zinc oxide and 1-2 parts of zirconium oxide.
The blue and white pattern is formed by drawing a blue and white pigment on the blank, wherein the blue and white pigment is composed of the following raw materials in parts by weight: 30-40 parts of cobalt oxide, 5-10 parts of sodium oxide, 3-5 parts of manganese oxide, 6-8 parts of potassium oxide, 10-12 parts of kaolin, 10-15 parts of germanized quartz and 6-12 parts of magnesite.
The transparent glaze layer is composed of the following raw materials in parts by weight: 20-30 parts of germanized quartz, 12-18 parts of albite, 3-5 parts of silicon micropowder, 5-7 parts of bentonite, 10-15 parts of potassium feldspar, 5-10 parts of argil, 2-5 parts of frit, 5-8 parts of zinc oxide and 5-10 parts of alumina; specifically, the frit has the following chemical composition: : SiO 2 2 ：69.25％、Al 2 O 3 ：12.76％、ZnO：7.39％、ZrO 2 ：1.25％、MgO：4.82％、La 2 O 3 ：0.86％、CaO：3.67％。
The colored drawing pattern is formed by drawing a colored drawing pigment on the transparent glaze layer, wherein the colored drawing pigment is composed of the following raw materials in parts by weight: 50-70 parts of color agent, 15-20 parts of quartz, 10-15 parts of feldspar, 5-7 parts of zinc oxide, 3-5 parts of magnesium oxide, 1-2 parts of lanthanum oxide and 1-3 parts of zirconium oxide; specifically, the toners can be selected according to specific color of the painting to blend the desired color.
A preparation process of high-strength blue and white five-color glazed porcelain comprises the following steps:
step one, weighing, crushing, mixing and wet ball milling raw materials of a blank to prepare slurry;
step two, weighing, crushing, mixing and wet ball milling the raw materials of the transparent glaze layer to prepare transparent glaze slip;
step three, preparing blue and white pigments and colored drawing pigments;
step four, sieving the slurry prepared in the step one, removing iron, preparing a blank, and after the surface of the blank is dried, drawing a blue and white pattern on the surface of the blank by using the blue and white pigment prepared in the step three;
step five, after the blue and white patterns are dried, the transparent glaze slurry prepared in the step two is applied on the blue and white patterns to form a transparent glaze slurry layer;
sixthly, after the transparent glaze slurry layer is dried, sending the transparent glaze slurry layer into a kiln, biscuiting for 10-12h at the temperature of 1120-1150 ℃, and cooling to obtain a biscuit;
and seventhly, carrying out colored drawing on the surface of the biscuit by using the colored drawing pigment to form a colored drawing pattern, after the colored drawing pattern is dried, sending the dried colored drawing pattern into a kiln, and firing for 4-6 hours at the temperature of 720-750 ℃ to obtain the blue-and-white five-color glazed porcelain.
In the step one, when wet ball milling is carried out on the slurry, the raw materials are ground in a ball mill for 20-24 hours in a wet method, the grinding medium is water, and the raw materials: ball: water-1: 1.2-1.5: 1-1.2.
In the second step, when the transparent glaze slip is wet-milled, the raw materials are wet-milled for 36 to 42 hours in a ball mill, the milling medium is water, and the raw materials: ball: water-1: 1.8-2: 1.2-1.5.
In the third step, the preparation method of the blue and white pigment comprises the following steps: weighing cobalt oxide, sodium oxide, manganese oxide and potassium oxide according to parts by weight, firstly mixing uniformly in a mixer, then placing in a kiln, and calcining for 1-2h at 1220-; and then cooling the calcined material, crushing the calcined material into particles with the particle size of 1mm, cleaning the particles, mixing the particles with other blue and white pigment raw materials, and carrying out wet ball milling to obtain the blue and white pigment.
In the fifth step, the glazing mode of the transparent glaze slip is glaze spraying; the thickness of the transparent glaze layer is 0.3-0.4 mm.
In the sixth step, the firing atmosphere of the biscuit is a reducing atmosphere, wherein the concentration of carbon monoxide is 4.3-4.8%, and the concentration of free oxygen is 1-1.2%.
Example 1
A high-strength blue-and-white five-color glazed porcelain comprises a blank body, and a blue-and-white pattern, a transparent glaze layer and a colored drawing pattern which are sequentially attached to the blank body.
The blank body is composed of the following raw materials in parts by weight: 20 parts of albite, 35 parts of germanized quartz, 10 parts of germanized kaolin, 10 parts of dolomite, 5 parts of opal, 3 parts of zinc oxide and 2 parts of zirconium oxide.
The blue and white pattern is formed by drawing a blue and white pigment on the blank, wherein the blue and white pigment is composed of the following raw materials in parts by weight: 30 parts of cobalt oxide, 10 parts of sodium oxide, 3 parts of manganese oxide, 8 parts of potassium oxide, 10 parts of kaolin, 15 parts of germanized quartz and 6 parts of magnesite.
The transparent glaze layer is composed of the following raw materials in parts by weight: 20 parts of germanized quartz, 18 parts of albite, 3 parts of silicon micropowder, 7 parts of bentonite, 10 parts of potassium feldspar, 10 parts of carclazyte, 2 parts of frit, 8 parts of zinc oxide and 5 parts of alumina; specifically, the frit has the following chemical composition: : SiO 2 2 ：69.25％、Al 2 O 3 ：12.76％、ZnO：7.39％、ZrO 2 ：1.25％、MgO：4.82％、La 2 O 3 ：0.86％、CaO：3.67％。
The colored drawing pattern is formed by drawing a colored drawing pigment on the transparent glaze layer, wherein the colored drawing pigment is composed of the following raw materials in parts by weight: 50 parts of a color agent, 20 parts of quartz, 10 parts of feldspar, 5 parts of zinc oxide, 5 parts of magnesium oxide, 1 part of lanthanum oxide and 3 parts of zirconium oxide; specifically, the toners can be selected according to specific color of the painting to blend the desired color.
A preparation process of high-strength blue and white five-color glazed porcelain comprises the following steps:
step one, weighing, crushing, mixing and wet ball milling raw materials of a blank to prepare slurry;
step two, weighing, crushing, mixing and wet ball milling the raw materials of the transparent glaze layer to prepare transparent glaze slip;
step three, preparing blue and white pigments and colored drawing pigments;
step four, sieving the slurry prepared in the step one, removing iron, preparing a blank, and after the surface of the blank is dried, drawing a blue and white pattern on the surface of the blank by using the blue and white pigment prepared in the step three;
step five, after the blue and white patterns are dried, the transparent glaze slurry prepared in the step two is applied on the blue and white patterns to form a transparent glaze slurry layer;
sixthly, after the transparent glaze slurry layer is dried, sending the transparent glaze slurry layer into a kiln, biscuiting for 12 hours at 1120 ℃, and cooling to obtain a biscuit;
and seventhly, carrying out colored drawing on the surface of the biscuit by using colored drawing pigment to form a colored drawing pattern, drying the colored drawing pattern, then sending the dried colored drawing pattern into a kiln, and firing for 6 hours at 720 ℃ to obtain the blue-and-white five-color glazed porcelain.
In the step one, when wet ball milling is carried out on the slurry, the raw materials are ground in a ball mill for 20 hours by a wet method, the grinding medium is water, and the raw materials: ball: water 1:1.5: 1.
In the second step, when the transparent glaze slip is wet-milled, the raw materials are wet-milled for 36 hours in a ball mill, the milling medium is water, and the raw materials: ball: water-1: 1.8: 1.2.
In the third step, the preparation method of the blue and white pigment comprises the following steps: weighing cobalt oxide, sodium oxide, manganese oxide and potassium oxide according to parts by weight, firstly mixing uniformly in a mixer, then placing in a kiln, and calcining for 2h at 1220 ℃; and then cooling the calcined material, crushing the calcined material into particles with the particle size of 1mm, cleaning the particles, mixing the particles with other blue and white pigment raw materials, and carrying out wet ball milling to obtain the blue and white pigment.
In the fifth step, the glazing mode of the transparent glaze slip is glaze spraying; the thickness of the transparent glaze layer is 0.3 mm.
In the sixth step, the firing atmosphere of the biscuit is a reducing atmosphere, wherein the concentration of carbon monoxide is 4.3%, and the concentration of free oxygen is 1%.
Example 2
A high-strength blue-and-white five-color glazed porcelain comprises a blank body, and a blue-and-white pattern, a transparent glaze layer and a colored drawing pattern which are sequentially attached to the blank body.
The blank body is composed of the following raw materials in parts by weight: 30 parts of albite, 25 parts of germanized quartz, 18 parts of germanized kaolin, 5 parts of dolomite, 10 parts of opal, 5 parts of zinc oxide and 1 part of zirconium oxide.
The blue and white pattern is formed by drawing a blue and white pigment on the blank, wherein the blue and white pigment is composed of the following raw materials in parts by weight: 40 parts of cobalt oxide, 5 parts of sodium oxide, 5 parts of manganese oxide, 6 parts of potassium oxide, 12 parts of kaolin, 10 parts of germanized quartz and 12 parts of magnesite.
The transparent glaze layer is composed of the following raw materials in parts by weight: 30 parts of germanized quartz, 12 parts of albite, 5 parts of silicon micropowder, 5 parts of bentonite, 15 parts of potassium feldspar, 5 parts of carclazyte, 5 parts of frit, 5 parts of zinc oxide and oxide10 parts of aluminum; specifically, the frit has the following chemical composition: : SiO 2 2 ：69.25％、Al 2 O 3 ：12.76％、ZnO：7.39％、ZrO 2 ：1.25％、MgO：4.82％、La 2 O 3 ：0.86％、CaO：3.67％。
The colored drawing pattern is formed by drawing a colored drawing pigment on the transparent glaze layer, wherein the colored drawing pigment is composed of the following raw materials in parts by weight: 70 parts of color agent, 15 parts of quartz, 15 parts of feldspar, 7 parts of zinc oxide, 3 parts of magnesium oxide, 2 parts of lanthanum oxide and 1 part of zirconium oxide; specifically, the toners can be selected according to specific color of the painting to blend the desired color.
A preparation process of high-strength blue and white five-color glazed porcelain comprises the following steps:
step one, weighing, crushing, mixing and wet ball milling raw materials of a blank to prepare slurry;
step two, weighing, crushing, mixing and wet ball milling the raw materials of the transparent glaze layer to prepare transparent glaze slip;
step three, preparing blue and white pigments and colored drawing pigments;
step four, sieving the slurry prepared in the step one, removing iron, preparing a blank, and after the surface of the blank is dried, drawing a blue and white pattern on the surface of the blank by using the blue and white pigment prepared in the step three;
step five, after the blue and white patterns are dried, the transparent glaze slurry prepared in the step two is applied on the blue and white patterns to form a transparent glaze slurry layer;
sixthly, after the transparent glaze slurry layer is dried, sending the transparent glaze slurry layer into a kiln, biscuiting for 10 hours at 1150 ℃, and cooling to obtain a biscuit;
and seventhly, carrying out colored drawing on the surface of the biscuit by using colored drawing pigment to form a colored drawing pattern, drying the colored drawing pattern, then feeding the dried colored drawing pattern into a kiln, and firing for 4 hours at 750 ℃ to obtain the blue-and-white five-color glazed porcelain.
In the step one, when wet ball milling is carried out on the slurry, the raw materials are wet-milled for 24 hours in a ball mill, the grinding medium is water, and the raw materials: ball: water-1: 1.2: 1.2.
In the second step, when the transparent glaze slip is wet-milled, the raw materials are wet-milled for 42 hours in a ball mill, the milling medium is water, and the raw materials: ball: water 1:2: 1.5.
In the third step, the preparation method of the blue and white pigment comprises the following steps: weighing cobalt oxide, sodium oxide, manganese oxide and potassium oxide according to parts by weight, firstly uniformly mixing in a mixer, then placing in a kiln, and calcining for 1h at 1250 ℃; and then cooling the calcined material, crushing the calcined material into particles with the particle size of 1mm, cleaning the particles, mixing the particles with other blue and white pigment raw materials, and carrying out wet ball milling to obtain the blue and white pigment.
In the fifth step, the glazing mode of the transparent glaze slip is glaze spraying; the thickness of the transparent glaze layer is 0.4 mm.
In the sixth step, the firing atmosphere of the biscuit is a reducing atmosphere, wherein the concentration of carbon monoxide is 4.8%, and the concentration of free oxygen is 1.2%.
Example 3
A high-strength blue-and-white five-color glazed porcelain comprises a blank body, and a blue-and-white pattern, a transparent glaze layer and a colored drawing pattern which are sequentially attached to the blank body.
The blank body is composed of the following raw materials in parts by weight: 25 parts of albite, 30 parts of germanized quartz, 15 parts of germanized kaolin, 7 parts of dolomite, 8 parts of opal, 4 parts of zinc oxide and 1.5 parts of zirconium oxide.
The blue and white pattern is formed by drawing a blue and white pigment on the blank, wherein the blue and white pigment is composed of the following raw materials in parts by weight: 35 parts of cobalt oxide, 8 parts of sodium oxide, 4 parts of manganese oxide, 7 parts of potassium oxide, 11 parts of kaolin, 12 parts of germanized quartz and 9 parts of magnesite.
The transparent glaze layer is composed of the following raw materials in parts by weight: 25 parts of germanized quartz, 15 parts of albite, 4 parts of silicon micropowder, 6 parts of bentonite, 12 parts of potassium feldspar, 8 parts of carclazyte, 3 parts of frit, 6 parts of zinc oxide and 7 parts of aluminum oxide; specifically, the frit has the following chemical composition: : SiO 2 2 ：69.25％、Al 2 O 3 ：12.76％、ZnO：7.39％、ZrO 2 ：1.25％、MgO：4.82％、La 2 O 3 ：0.86％、CaO：3.67％。
The colored drawing pattern is formed by drawing a colored drawing pigment on the transparent glaze layer, wherein the colored drawing pigment is composed of the following raw materials in parts by weight: 60 parts of a color agent, 12 parts of quartz, 12 parts of feldspar, 6 parts of zinc oxide, 4 parts of magnesium oxide, 1.5 parts of lanthanum oxide and 2 parts of zirconium oxide; specifically, the toners can be selected according to specific color of the painting to blend the desired color.
A preparation process of high-strength blue and white five-color glazed porcelain comprises the following steps:
step one, weighing, crushing, mixing and wet ball milling raw materials of a blank to prepare slurry;
step two, weighing, crushing, mixing and wet ball milling the raw materials of the transparent glaze layer to prepare transparent glaze slip;
step three, preparing blue and white pigments and colored drawing pigments;
step four, sieving the slurry prepared in the step one, removing iron, preparing a blank, and after the surface of the blank is dried, drawing a blue and white pattern on the surface of the blank by using the blue and white pigment prepared in the step three;
step five, after the blue and white patterns are dried, the transparent glaze slurry prepared in the step two is applied on the blue and white patterns to form a transparent glaze slurry layer;
sixthly, after the transparent glaze slurry layer is dried, sending the transparent glaze slurry layer into a kiln, biscuiting for 11 hours at the temperature of 1135 ℃, and cooling to obtain a biscuit;
and seventhly, carrying out colored drawing on the surface of the biscuit by using colored drawing pigment to form a colored drawing pattern, drying the colored drawing pattern, then feeding the dried colored drawing pattern into a kiln, and firing for 5 hours at 735 ℃ to obtain the blue-and-white five-color glazed porcelain.
In the step one, when wet ball milling is carried out on the slurry, the raw materials are ground in a ball mill for 22 hours in a wet method, the grinding medium is water, and the raw materials: ball: water-1: 1.3: 1.1.
In the second step, when the transparent glaze slip is wet-milled, the raw materials are wet-milled for 39 hours in a ball mill, the milling medium is water, and the raw materials: ball: water-1: 1.9: 1.3.
In the third step, the preparation method of the blue and white pigment comprises the following steps: weighing cobalt oxide, sodium oxide, manganese oxide and potassium oxide according to parts by weight, firstly mixing uniformly in a mixer, then placing in a kiln, and calcining for 1.5h at 1235 ℃; and then cooling the calcined material, crushing the calcined material into particles with the particle size of 1mm, cleaning the particles, mixing the particles with other blue and white pigment raw materials, and carrying out wet ball milling to obtain the blue and white pigment.
In the fifth step, the glazing mode of the transparent glaze slip is glaze spraying; the thickness of the transparent glaze layer is 0.35 mm.
In the sixth step, the firing atmosphere of the biscuit is a reducing atmosphere, wherein the concentration of carbon monoxide is 4.5%, and the concentration of free oxygen is 1.1%.
By taking the blue and white five-color enamel porcelain in the prior art as a comparative example and carrying out corresponding tests with the blue and white five-color enamel porcelain prepared in the examples 1 to 3, the following data are obtained:
table 1 data results table for each example
| Item | Mohs hardness | Breaking strength (MPa) |
| Example 1 | 6.8 | 139 |
| Example 2 | 6.9 | 142 |
| Example 3 | 7.2 | 145 |
| Comparative example | 5.3 | 75 |
According to the table, the hardness and the strength of the blue and white five-color glazed porcelain prepared by the method are superior to those of the blue and white five-color glazed porcelain in the prior art, and the blue and white five-color glazed porcelain is convenient to transport and not easy to damage.
According to the invention, the raw material composition of the blue and white glaze porcelain is limited to be matched with a specific firing process, so that the prepared blue and white glaze porcelain is matched with each other to bring out the best in each other by taking a blue and white pattern as a bottom and a colored drawing pattern as an upper, and has high ornamental value; the specific composition of the transparent glaze layer is limited, so that the surface tension of the glaze is large, the glaze is fired in cooperation with the blue and white pigment, the blue and white pigment is relatively stable in color development, the blue and white pigment cannot be smoked, the brilliance of the blue and white pigment can be obviously improved, the decorative effect is better and more vivid, and the ornamental value of the blue and white five-color glazed porcelain is improved.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents and modifications within the scope of the description.
Claims (10)
1. The high-strength blue and white five-color glazed porcelain is characterized in that: comprises a green body, and a blue-and-white pattern, a transparent glaze layer and a colored drawing pattern which are sequentially attached on the green body;
the blue and white pattern is formed by drawing blue and white pigment on the blank, and the blue and white pigment comprises the following raw materials in parts by weight: 30-40 parts of cobalt oxide, 5-10 parts of sodium oxide, 3-5 parts of manganese oxide, 6-8 parts of potassium oxide, 10-12 parts of kaolin, 10-15 parts of germanized quartz and 6-12 parts of magnesite;
the transparent glaze layer is composed of the following raw materials in parts by weight: 20-30 parts of germanized quartz, 12-18 parts of albite, 3-5 parts of silicon micropowder, 5-7 parts of bentonite, 10-15 parts of potassium feldspar, 5-10 parts of argil, 2-5 parts of frit, 5-8 parts of zinc oxide and 5-10 parts of aluminum oxide.
2. The high-strength blue-and-white five-color enamel according to claim 1, wherein: the frit has the following chemical composition: : SiO 2 2 ：69.25％、Al 2 O 3 ：12.76％、ZnO：7.39％、ZrO 2 ：1.25％、MgO：4.82％、La 2 O 3 ：0.86％、CaO：3.67％。
3. The high-strength blue-and-white five-color enamel according to claim 1, wherein: the colored drawing pattern is formed by drawing a colored drawing pigment on the transparent glaze layer, wherein the colored drawing pigment is composed of the following raw materials in parts by weight: 50-70 parts of color agent, 15-20 parts of quartz, 10-15 parts of feldspar, 5-7 parts of zinc oxide, 3-5 parts of magnesium oxide, 1-2 parts of lanthanum oxide and 1-3 parts of zirconium oxide.
4. The high-strength blue-and-white five-color enamel according to claim 1, wherein: the blank body is composed of the following raw materials in parts by weight: 20-30 parts of albite, 25-35 parts of germanized quartz, 10-18 parts of germanized kaolin, 5-10 parts of dolomite, 5-10 parts of opal, 3-5 parts of zinc oxide and 1-2 parts of zirconium oxide.
5. A preparation process of high-strength blue and white five-color glazed porcelain is characterized by comprising the following steps: the method comprises the following steps:
step one, weighing, crushing, mixing and wet ball milling raw materials of a blank to prepare slurry;
step two, weighing, crushing, mixing and wet ball milling the raw materials of the transparent glaze layer to prepare transparent glaze slip;
step three, preparing blue and white pigments and colored drawing pigments;
step four, sieving the slurry prepared in the step one, removing iron, preparing a blank, and after the surface of the blank is dried, drawing a blue and white pattern on the surface of the blank by using the blue and white pigment prepared in the step three;
step five, after the blue and white patterns are dried, the transparent glaze slurry prepared in the step two is applied on the blue and white patterns to form a transparent glaze slurry layer;
sixthly, after the transparent glaze slurry layer is dried, sending the transparent glaze slurry layer into a kiln, biscuiting for 10-12h at the temperature of 1120-1150 ℃, and cooling to obtain a biscuit;
and seventhly, carrying out colored drawing on the surface of the biscuit by using colored drawing pigment to form a colored drawing pattern, drying the colored drawing pattern, sending the dried colored drawing pattern into a kiln, and firing for 4-6h at the temperature of 720-750 ℃ to obtain the blue-and-white five-color glazed porcelain.
6. The preparation process of the high-strength blue-and-white five-color glazed porcelain according to claim 5, characterized in that: in the third step, the preparation method of the blue and white pigment comprises the following steps: weighing cobalt oxide, sodium oxide, manganese oxide and potassium oxide according to parts by weight, firstly mixing uniformly in a mixer, then placing in a kiln, and calcining for 1-2h at 1220-; and then cooling the calcined material, crushing the calcined material into particles with the particle size of 1mm, cleaning the particles, mixing the particles with other blue and white pigment raw materials, and carrying out wet ball milling to obtain the blue and white pigment.
7. The preparation process of the high-strength blue-and-white five-color glazed porcelain according to claim 5, characterized in that: in the fifth step, the glazing mode of the transparent glaze slip is glaze spraying; the thickness of the transparent glaze layer is 0.3-0.4 mm.
8. The preparation process of the high-strength blue-and-white five-color glazed porcelain according to claim 5, characterized in that: in the sixth step, the firing atmosphere of the biscuit is a reducing atmosphere, wherein the concentration of carbon monoxide is 4.3-4.8%, and the concentration of free oxygen is 1-1.2%.
9. The preparation process of the high-strength blue-and-white five-color glazed porcelain according to claim 5, characterized in that: in the first step, when wet ball milling is carried out on the slurry, the raw materials are wet-milled in a ball mill for 20-24 hours, the milling medium is water, and the raw materials are as follows: ball: water-1: 1.2-1.5: 1-1.2.
10. The preparation process of the high-strength blue-and-white five-color glazed porcelain according to claim 5, characterized in that: in the second step, when the transparent glaze slip is wet-milled, the raw materials are wet-milled for 36 to 42 hours in a ball mill, the milling medium is water, and the raw materials: ball: water-1: 1.8-2: 1.2-1.5.
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