High-temperature underglaze colored porcelain flower and preparation process thereof

Abstract

The invention relates to the technical field of ceramics and preparation thereof, in particular to a high-temperature under-glaze colored porcelain flower and a preparation process thereof.The high-temperature under-glaze colored porcelain flower is formed by gathering a plurality of flowers, each flower comprises a flowering branch, a stamen and petals, the stamen is located at the top end of the flowering branch, and the petals surround the flowering branch and the stamen. A vivid flower shape with a thin wall is prepared through a special forming process, the flowers are bonded into a bouquet, the petals of the bouquet are sprayed with the underglaze color, the bouquet has beautiful color and overall unique aesthetic feeling, and the underglaze color is bright in color and not prone to fading through high-temperature firing.

Description

Technical Field

[0001] The invention relates to the technical field of ceramics and preparation thereof, and in particular to high-temperature underglaze colored porcelain flowers and preparation technology thereof. Background Art

[0002] High-temperature underglaze colored porcelain is a type of ceramic product that is made by applying a colored pattern on the surface of the porcelain, then covering it with a layer of transparent glaze and firing it at high temperature. Because the color is wrapped in the glaze layer during the high-temperature firing process, it has the characteristics of bright colors, not easy to fade, and strong wear resistance, and is deeply loved by consumers. Traditional underglaze colors are mostly applied to thick-walled ceramic containers. For thin-walled and three-dimensional artistic ceramics, due to their thin walls, molding and glazing are more difficult, the body is prone to cracking during the firing process, and the patterns and glazes are not easy to form, so the underglaze color process is rarely used. For thin-walled green bodies, if one wants to further prepare underglaze colored porcelain with a crack effect, the traditional method of thick base glaze plus thin surface glaze is adopted. The thickness of the thick base glaze must be more than 2-3 times that of the surface glaze. Since the glaze surface is too thick, the thick base glaze will easily cause cracking of the green body during the process of forming cracks during firing, which will lead to insufficient strength of the ceramic. Therefore, the existing crack glaze formula and firing process cannot be directly applied to the thin-walled petals in the colored porcelain flowers of the present invention, which may cause the green body of the petals to burst during the firing process following the cracking of the thick base glaze, thereby reducing the green body strength and yield rate. In view of this, this case is generated. Summary of the invention

[0003] An object of the present invention is to solve at least the above-mentioned problems through high-temperature underglaze colored porcelain flowers and a preparation process thereof.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a high-temperature underglaze colored porcelain flower, comprising a flower branch, a stamen and petals, the stamen is located at the top of the flower branch, a plurality of petals are surrounded by the flower branch and the stamen, and the surface of the stamen is provided with a concave pattern.

[0005] Preferably, the petals include a blank, the surface of which is sequentially covered with a strengthening mud layer, a graining mud layer, a decorative layer and a transparent glaze layer, the decorative layer is underglaze color pattern and / or color-changing flow pattern, the raw material of the strengthening mud layer is strengthening mud, the raw material of the graining mud layer is graining mud, the raw material of the underglaze color pattern is color colorant, the raw material of the color-changing flow pattern is color-changing flow pattern glaze, and the raw material of the transparent glaze layer is transparent glaze.

[0006] Preferably, the raw materials of the reinforced mud layer include the following components in parts by weight: 12-18 parts of bauxite, 10-12 parts of aluminum oxide, 30-35 parts of potassium feldspar, 30-35 parts of kaolin, 10-12 parts of cordierite, 5-8 parts of quartz, and 10-12 parts of spodumene.

[0007] Preferably, the raw materials of the cracking mud layer include the following components in parts by weight: 40-50 parts of clay, 20-25 parts of pumice, 10-12 parts of diatomaceous earth, 20-30 parts of calcium carbonate, 15-20 parts of potassium feldspar, 10-12 parts of kaolin, and 5-8 parts of quartz.

[0008] Preferably, the raw materials of the color toner include the following components in parts by weight: 30 parts of cornstarch, 20 parts of red colorant, 10 parts of yellow colorant, 30 parts of New Zealand kaolin powder, 0.3 parts of American viscous rubber powder, and 65 parts of clean water.

[0009] Preferably, the raw materials of the color toner include the following components in parts by weight: 30 parts of cornstarch, 25 parts of water-cyan color, 10 parts of dark blue color, 30 parts of New Zealand kaolin powder, 0.3 parts of American viscous rubber powder, and 65 parts of clean water.

[0010] Preferably, the raw materials of the color toner include the following components in parts by weight: 30 parts of cornstarch, 14 parts of yellow colorant, 16 parts of cyan colorant, 30 parts of New Zealand kaolin powder, 0.3 parts of American viscous rubber powder, and 65 parts of clean water.

[0011] Preferably, the raw materials of the color-changing flow glaze include the following components in parts by weight: 40-45 parts of white frit glaze, 12-15 parts of boron frit, 12-15 parts of phosphorus frit, 12-14 parts of aluminum oxide, 10-12 parts of bone ash, 12-15 parts of dolomite, 4-5 parts of iron oxide, 8-10 parts of borax, 4-6 parts of vanadium pentoxide, 5-8 parts of praseodymium neodymium oxide, 10-12 parts of axenite, 8-10 parts of wollastonite, 5-6 parts of titanium oxide, and 5-8 parts of zinc oxide.

[0012] Preferably, the raw materials of the transparent glaze include the following components in parts by weight: 30-40 parts of feldspar, 20-30 parts of limestone, 12-15 parts of zinc oxide, 5-7 parts of clay, 12-14 parts of china clay, and 6-8 parts of quartz.

[0013] The above-mentioned preparation process of high-temperature underglaze colored porcelain flowers comprises the following steps:

[0014] Step a, preparing a blank;

[0015] Step b, take part of the blank and roll it into strips, cut one end of the blank and pinch it into the shape of a single petal;

[0016] Step c, take a piece of blank and knead it into the shape of a flower branch, and surround a plurality of petals around the flower branch;

[0017] Step d, take a strip of blank and pinch out the shape of a pistil on the top;

[0018] Step f, insert the stamen into the middle of the enclosed petals;

[0019] Step e, placing the green body into a kiln for biscuit firing;

[0020] Step e, applying a strengthening slurry layer, a graining slurry layer, a decorative layer and a transparent glaze layer in sequence on the surface of the body of the petals after bisque firing;

[0021] Step f, putting the glaze into the kiln for high-temperature firing, the firing temperature is 1360°C.

[0022] From the above description, it can be seen that the high-temperature underglaze colored porcelain flowers and the preparation process thereof provided by the present invention have the following beneficial effects: a thin-walled, lifelike flower shape is prepared through a special molding process, and the flowers are combined into a bouquet, and the petals are sprayed with underglaze colors and color-changing flow glazes, which have a unique overall aesthetic appeal. The underglaze colors are fired at high temperatures, and the colors are bright and not easy to fade; a reinforcing mud layer for strengthening the body and a textured mud layer for cracking and forming cracks are added between the glaze and the body, and the reinforcing mud layer is used as a transition layer between the body and the textured mud layer. During the firing process, cracks are formed in the textured mud layer, and the reinforcing mud layer can absorb the deformation caused by the cracks to avoid cracking of the body. After the petals are fired, the surface thereof has underglaze colored patterns and color-changing flow patterns with cracks, and has rich patterns and a unique aesthetic appeal. DETAILED DESCRIPTION

[0023] The present invention is further described below through specific implementation modes.

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0025] The high-temperature underglaze colored porcelain flower of the present invention comprises a flower branch, a stamen and petals. The stamen is located at the top of the flower branch, a plurality of petals surround the flower branch and the stamen, and a concave pattern is arranged on the surface of the stamen.

[0026] The petals include a body, the surface of which is sequentially covered with a strengthening mud layer, a graining mud layer, a decorative layer and a transparent glaze layer, the decorative layer being underglaze color patterns and / or color-changing flow patterns, the raw material of the strengthening mud layer being strengthening mud, the raw material of the graining mud layer being graining mud, the raw material of the underglaze color patterns being color colorants, the raw material of the color-changing flow patterns being color-changing flow pattern glaze, and the raw material of the transparent glaze layer being transparent glaze. For a thin-walled body such as a petal, the body itself is prone to cracking during the firing process, and if a crack effect is to be further formed on the basis of the thin-walled petals, the thin body is prone to cracking during the process of crack formation on the glaze surface, resulting in reduced strength of the body and reduced yield, and in subsequent use, due to the presence of dark cracks inside the body, cracking and breakage are likely to occur; in order to solve the problem of easy cracking and insufficient strength of the body of the thin-walled petals with a crack effect, the present invention adds a layer between the glaze and the body. A strengthening mud layer is used to strengthen the blank and a carving mud layer is used to crack and form cracks. The strengthening mud layer serves as a transition layer between the blank and the carving mud layer. Cracks are formed in the carving mud layer during the firing process, and the strengthening mud layer can absorb the deformation caused by the cracks to avoid cracking of the blank. In order not to affect the thickness of the blank, the thickness of the blank is reduced to compensate for the increase in thickness caused by the addition of the strengthening mud layer and the carving mud layer. After the petals are fired, their surface has underglaze colored patterns and color-changing flow patterns with cracks, with rich patterns and unique beauty.

[0027] The raw materials of the strengthening mud layer include the following components by weight: 12-18 parts of alumina, 10-12 parts of alumina, 30-35 parts of potassium feldspar, 30-35 parts of kaolin, 10-12 parts of cordierite, 5-8 parts of quartz, and 10-12 parts of spodumene. Among the raw materials of the strengthening mud layer, alumina and alumina are used as body strengtheners, which can significantly strengthen the structural strength of the body and improve the high-temperature stability. During the firing process, they absorb the deformation caused by the cracking of the cracking mud layer, avoid the cracking of the body, and improve the strength of the body; cordierite is fusible and can improve the adhesion with the body and other glazes, so that the strengthening mud acts as a transition layer to absorb the deformation caused by the cracking and avoid the cracks from being transmitted to the body. Therefore, when the cracks generated by the cracking mud layer are transmitted to the strengthening mud layer, only a small number of dark cracks will be generated, and the dark cracks further transmitted to the body are very few, which can effectively ensure the strength of the body.

[0028] The raw materials of the opening mud layer include the following components in parts by weight: 40-50 parts of clay, 20-25 parts of pumice, 10-12 parts of diatomaceous earth, 20-30 parts of calcium carbonate, 15-20 parts of potassium feldspar, 10-12 parts of kaolin, and 5-8 parts of quartz. The crackle glaze is prepared by the traditional method of adding a thick base glaze and a thin surface glaze. The base glaze is too thick, which may easily cause cracks in the body and the surface glaze during the firing process. Moreover, since the base glaze is very thick, when the base glaze is used as a texture layer, it can only be glazed by spraying or dipping the glaze multiple times, and the texture cannot be painted by painting. Therefore, it is not easy to achieve both the crackle effect and the painting effect at the same time. Among the raw materials of the texture mud layer of the present invention, pumice and diatomaceous earth have many voids and low density. When they are added to the texture mud, they are easy to expand and form cracks during firing, thereby driving the decorative layer thereon to form cracks. Therefore, the thickness of the decorative layer can be very thin, and there is no need to apply thick glaze. The decorative glaze can be directly applied by painting, which is convenient for forming different patterns.

[0029] The raw materials of the color toner include the following components in parts by weight: 30 parts of raw powder, 20 parts of red colorant, 10 parts of yellow colorant, 30 parts of New Zealand kaolin powder, 0.3 parts of American viscous rubber powder, and 65 parts of water. The main component of raw powder is hydroxyapatite, which has high hardness and good biocompatibility. The viscous rubber powder is polyurethane rubber powder, which is composed of polyester or polyether polyurethane prepolymer, curing agent, etc. It has the advantages of good weather resistance, strong chemical corrosion resistance, strong adhesion, etc. Colorants of different components and formulas are configured into color toners of different colors, which are applied to the open-grain mud layer to form textures of different colors.

[0030] The raw materials of the color toner include the following components in parts by weight: 30 parts of cornstarch, 25 parts of water-cyan color, 10 parts of dark blue color, 30 parts of New Zealand kaolin powder, 0.3 parts of American viscous glue powder, and 65 parts of clean water.

[0031] The raw materials of the color toner include the following components in parts by weight: 30 parts of cornstarch, 14 parts of yellow colorant, 16 parts of cyan colorant, 30 parts of New Zealand kaolin powder, 0.3 parts of American viscous rubber powder, and 65 parts of clean water.

[0032] The raw materials of the color-changing flow glaze include the following components in parts by weight: 40-45 parts of white frit glaze, 12-15 parts of boron frit, 12-15 parts of phosphorus frit, 12-14 parts of aluminum oxide, 10-12 parts of bone ash, 12-15 parts of dolomite, 4-5 parts of iron oxide, 8-10 parts of borax, 4-6 parts of vanadium pentoxide, 5-8 parts of praseodymium-neodymium oxide, 10-12 parts of axenite, 8-10 parts of wollastonite, 5-6 parts of titanium oxide, and 5-8 parts of zinc oxide. Zinc oxide and titanium oxide are used as phase separation crystallization agents, which can reduce the high-temperature viscosity of the glaze, improve the high-temperature fluidity of the glaze, and promote the phase separation and crystallization of the glaze. Boron frit, phosphorus frit, and vanadium pentoxide can change the surface tension of the color-changing flow glaze, improve the high-temperature ductility of the solution, and promote the fusion and penetration of the color-changing flow glaze and the transparent glaze, so that the glaze surface undergoes texture changes and forms flow patterns. The glaze surface presents a blue-white flow pattern. The yellow axenite added to the glaze emits red fluorescence under ultraviolet light, and praseodymium-neodymium oxide improves the coloring effect of the fluorescent substance. Therefore, the glaze has a color-changing effect after firing. When exposed to ultraviolet light, the glaze surface exhibits a dark red fluorescence. It not only has a unique ornamental value, but can also be used as an anti-counterfeiting mark for ceramic artworks.

[0033] The raw materials of the transparent glaze include the following components in parts by weight: 30-40 parts of feldspar, 20-30 parts of limestone, 12-15 parts of zinc oxide, 5-7 parts of clay, 12-14 parts of porcelain clay, and 6-8 parts of quartz.

[0034] The preparation process of high-temperature underglaze colored porcelain flowers comprises the following steps:

[0035] Step a, preparing a blank;

[0036] Step b, take part of the blank and roll it into strips, cut one end of the blank and pinch it into the shape of a single petal;

[0037] Step c, take a piece of blank and knead it into the shape of a flower branch, and surround a plurality of petals around the flower branch;

[0038] Step d, take a strip of blank and pinch out the shape of a pistil on the top;

[0039] Step f, insert the stamen into the middle of the enclosed petals;

[0040] Step e, placing the green body into a kiln for biscuit firing;

[0041] Step e, applying a strengthening mud layer, a graining mud layer, a decorative layer and a transparent glaze layer in sequence on the surface of the petals after bisque firing; wherein the strengthening mud layer and the graining mud layer can be applied by immersion, the decorative layer is applied by dipping glaze, spraying glaze or painting with a brush, and the transparent glaze is applied by dipping glaze or spraying glaze. After each layer of material is applied, it is dried before applying the next layer of material.

[0042] Step f, putting the glaze into the kiln for high-temperature firing, the firing temperature is 1360°C.

[0043] The above are only some specific implementation methods of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. High temperature underglaze colored porcelain flower, characterized by: It comprises a flower branch, a stamen and petals, wherein the stamen is located at the top of the flower branch, a plurality of petals surround the flower branch and the stamen, and a concave pattern is arranged on the surface of the stamen.

2. The high temperature underglaze colored porcelain flower according to claim 1, characterized in that: The petals include a blank, the surface of which is sequentially covered with a strengthening mud layer, a graining mud layer, a decorative layer and a transparent glaze layer, the decorative layer being underglaze color patterns and / or color-changing flow patterns, the raw material of the strengthening mud layer being strengthening mud, the raw material of the graining mud layer being graining mud, the raw material of the underglaze color patterns being color colorants, the raw material of the color-changing flow patterns being color-changing flow pattern glaze, and the raw material of the transparent glaze layer being transparent glaze.

3. The high temperature underglaze colored porcelain flower according to claim 2, characterized in that: The raw materials of the strengthening mud layer include the following components in parts by weight: 12-18 parts of bauxite, 10-12 parts of aluminum oxide, 30-35 parts of potassium feldspar, 30-35 parts of kaolin, 10-12 parts of cordierite, 5-8 parts of quartz, and 10-12 parts of spodumene.

4. The high temperature underglaze colored porcelain flower according to claim 2, characterized in that: The raw materials of the cracking mud layer include the following components in parts by weight: 40-50 parts of clay, 20-25 parts of pumice, 10-12 parts of diatomaceous earth, 20-30 parts of calcium carbonate, 15-20 parts of potassium feldspar, 10-12 parts of kaolin, and 5-8 parts of quartz.

5. The high temperature underglaze colored porcelain flower according to claim 2, characterized in that: The raw materials of the color toner include the following components in parts by weight: 30 parts of cornstarch, 20 parts of red colorant, 10 parts of yellow colorant, 30 parts of New Zealand kaolin powder, 0.3 parts of American viscous rubber powder, and 65 parts of clean water.

6. The high temperature underglaze colored porcelain flower according to claim 2, characterized in that: The raw materials of the color toner include the following components in parts by weight: 30 parts of cornstarch, 25 parts of water-cyan color, 10 parts of dark blue color, 30 parts of New Zealand kaolin powder, 0.3 parts of American viscous glue powder, and 65 parts of clean water.

7. The high temperature underglaze colored porcelain flower according to claim 2, characterized in that: The raw materials of the color toner include the following components in parts by weight: 30 parts of cornstarch, 14 parts of yellow colorant, 16 parts of cyan colorant, 30 parts of New Zealand kaolin powder, 0.3 parts of American viscous rubber powder, and 65 parts of clean water.

8. The high temperature underglaze colored porcelain flower according to claim 2, characterized in that: The raw materials of the color-changing flow glaze include the following components in parts by weight: 40-45 parts of white frit glaze, 12-15 parts of boron frit, 12-15 parts of phosphorus frit, 12-14 parts of aluminum oxide, 10-12 parts of bone ash, 12-15 parts of dolomite, 4-5 parts of iron oxide, 8-10 parts of borax, 4-6 parts of vanadium pentoxide, 5-8 parts of praseodymium-neodymium oxide, 10-12 parts of axenite, 8-10 parts of wollastonite, 5-6 parts of titanium oxide, and 5-8 parts of zinc oxide.

9. The high temperature underglaze colored porcelain flower according to claim 2, characterized in that: The raw materials of the transparent glaze include the following components in parts by weight: 30-40 parts of feldspar, 20-30 parts of limestone, 12-15 parts of zinc oxide, 5-7 parts of clay, 12-14 parts of porcelain clay, and 6-8 parts of quartz.

10. The process for preparing high-temperature underglaze colored porcelain flowers according to any one of claims 1 to 9, characterized in that: The steps include: Step a, preparing a blank; Step b, take part of the blank and roll it into strips, cut one end of the blank and pinch it into the shape of a single petal; Step c, taking a piece of blank and kneading it into the shape of a flower branch, and surrounding a plurality of petals around the flower branch; Step d, take a strip of blank and pinch out the shape of a pistil on the top; Step f, insert the stamen into the middle of the enclosed petals; Step e, placing the green body into a kiln for biscuit firing; Step e, applying a strengthening slurry layer, a graining slurry layer, a decorative layer and a transparent glaze layer in sequence on the surface of the body of the petals after bisque firing; Step f, putting the glaze into the kiln for high-temperature firing, the firing temperature is 1360°C.