High-temperature underglaze color porcelain flower and preparation process thereof

Abstract

The present application relates to the technical field of ceramic and its preparation, in particular to a kind of high-temperature underglaze color porcelain flower and its preparation process, which is formed by multiple flowers, the flower includes flower branch, flower stamen and petal, the flower stamen is located at the top of flower branch, and multiple petals are surrounded around flower branch and flower stamen. The special forming process is used to prepare thin wall and lifelike flower shape, and the flowers are bonded into a bouquet, the petals are sprayed with underglaze color, have beautiful color, and the whole has unique aesthetic feeling. The underglaze color is fired at high temperature, and the color is bright and not easy to fade.

Description

Technical Field

[0001] This invention relates to the field of ceramics and their preparation technology, specifically to high-temperature underglaze porcelain flowers and their preparation process. Background Technology

[0002] High-temperature underglaze porcelain is a type of ceramic product made by applying painted patterns to the surface of porcelain, then covering it with a layer of transparent glaze, and firing it at high temperatures. Because the colors are encased in the glaze during the high-temperature firing process, it possesses characteristics such as vibrant colors, resistance to fading, and high wear resistance, making it highly popular with consumers. Traditionally, underglaze painting is mostly applied to thick-walled ceramic containers. For thin-walled and three-dimensional art ceramics, due to their thin walls, shaping and glazing are more difficult, the body is prone to cracking during firing, and the patterns and glazes are difficult to form; therefore, underglaze painting is rarely used in their production. For thin-walled bodies, if one wants to further prepare underglaze porcelain with crackle effects, the traditional method of thick base glaze plus thin top glaze is used. The thickness of the thick base glaze should be more than 2-3 times that of the top glaze. Due to the excessive thickness of the glaze, the body is prone to cracking during the firing process of the thick base glaze, which leads to insufficient strength of the ceramic. Therefore, the existing crackle glaze formula and firing process cannot be directly applied to the thin-walled petals in the colored porcelain flowers of this invention. It may cause the body of the petals to crack along with the thick base glaze during the firing process, thereby reducing the strength of the body and the yield. In view of this, this invention was developed. Summary of the Invention

[0003] One objective of this invention is to solve at least the aforementioned problems through high-temperature underglaze porcelain flowers and their preparation process.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a high-temperature underglaze porcelain flower, including a flower branch, a stamen and petals, wherein the stamen is located at the top of the flower branch, and multiple petals surround the flower branch and the stamen, and the surface of the stamen is provided with recessed patterns.

[0005] Preferably, the petals comprise a blank, the surface of which is sequentially covered with a reinforced slurry layer, a textured slurry layer, a decorative layer, and a transparent glaze layer. The decorative layer is an underglaze pattern and / or a color-changing flow pattern. The reinforced slurry layer is made of reinforced slurry, the textured slurry layer is made of textured slurry, the underglaze pattern is made of colored pigment, the color-changing flow pattern is made of color-changing flow glaze, and the transparent glaze layer is made of transparent glaze.

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

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

[0008] Preferably, the raw materials of the colorant, by weight, include the following components in sequence: 30 parts of raw starch, 20 parts of red pigment, 10 parts of yellow pigment, 30 parts of New Zealand kaolin powder, 0.3 parts of American adhesive powder, and 65 parts of water.

[0009] Preferably, the raw materials of the colorant, by weight, include the following components in sequence: 30 parts of raw starch, 25 parts of light blue pigment, 10 parts of dark blue pigment, 30 parts of New Zealand kaolin powder, 0.3 parts of American adhesive powder, and 65 parts of water.

[0010] Preferably, the raw materials of the colorant, by weight, include the following components in sequence: 30 parts of raw starch, 14 parts of yellow pigment, 16 parts of light blue pigment, 30 parts of New Zealand kaolin powder, 0.3 parts of American adhesive powder, and 65 parts of water.

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

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

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

[0014] Step a: Prepare the blank;

[0015] Step b: Take a portion of the blank material, roll it into a strip, cut off one end of the blank material, and pinch it into the shape of a single petal;

[0016] Step c: Take a piece of raw material and knead it to form the shape of a flower branch, then gather multiple petals around the flower branch;

[0017] Step d: Take a strip of blank material and pinch the top of it into the shape of a flower stamen;

[0018] Step f: Insert the stamen into the center of the enclosed petals;

[0019] Step e: The green body is placed in the kiln for bisque firing;

[0020] Step e: Apply a strengthening slurry layer, a crackling slurry layer, a decorative layer, and a transparent glaze layer sequentially to the surface of the bisque-fired petal body.

[0021] Step f: Firing the glaze in a kiln at a high temperature of 1360℃.

[0022] As described above, the high-temperature underglaze porcelain flowers and their preparation process provided by this invention have the following beneficial effects: Thin-walled, lifelike flower shapes are prepared through a special forming process, and the flowers are combined into bouquets. Underglaze colors and color-changing flow glazes are sprayed onto the petals, resulting in a unique overall aesthetic. The underglaze colors are brightly colored and do not easily fade after high-temperature firing. A reinforcing slurry layer for strengthening the body and a crack-forming slurry layer for creating cracks are added between the glaze and the body. The reinforcing slurry layer serves as a transition layer between the body and the crack-forming slurry layer. During firing, cracks form in the crack-forming slurry layer, while the reinforcing slurry layer absorbs the deformation caused by the cracks, preventing the body from cracking. After firing, the petals have a surface with distributed cracked underglaze colors and color-changing flow patterns, exhibiting rich textures and a unique aesthetic appeal. Detailed Implementation

[0023] The present invention will be further described below through specific embodiments.

[0024] 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.

[0025] The high-temperature underglaze porcelain flower of the present invention includes a flower branch, a stamen, and petals. The stamen is located at the top of the flower branch, and multiple petals surround the flower branch and the stamen. The surface of the stamen is provided with recessed patterns.

[0026] The petal-shaped body comprises a blank, the surface of which is sequentially covered with a reinforcing slurry layer, a crackled slurry layer, a decorative layer, and a transparent glaze layer. The decorative layer consists of underglaze patterns and / or color-changing flow patterns. The reinforcing slurry layer is made from reinforcing slurry, the crackled slurry layer from crackled slurry, the underglaze patterns from colored pigments, the color-changing flow patterns from color-changing flow glaze, and the transparent glaze layer from transparent glaze. For thin-walled blanks like the petal-shaped body, the blank itself is prone to cracking during firing. If a cracked effect is to be further developed on the thin-walled petal, the cracking process on the glaze surface can easily cause the thin blank to crack as well, leading to reduced strength and lower yield. Furthermore, the presence of internal cracks within the blank makes it prone to breakage during subsequent use. To address the issues of easy cracking and insufficient strength in thin-walled petals with a cracked effect, this invention adds a layer between the glaze and the blank. A reinforcing slurry layer is used to strengthen the body, and a crack-forming slurry layer is used to form cracks. The reinforcing slurry layer serves as a transition layer between the body and the crack-forming slurry layer. During firing, the crack-forming slurry layer forms cracks, while the reinforcing slurry layer can absorb the deformation caused by the cracks and prevent the body from cracking. In order not to affect the thickness of the body, the thickness of the body is reduced to compensate for the increase in thickness caused by the addition of the reinforcing slurry layer and the crack-forming slurry layer. After firing, the petals have distributed underglaze patterns with cracks and color-changing flow patterns on their surface, with rich textures and unique beauty.

[0027] The raw materials for strengthening the slurry layer, by weight, include the following components: 12-18 parts bauxite, 10-12 parts alumina, 30-35 parts potassium feldspar, 30-35 parts kaolin, 10-12 parts cordierite, 5-8 parts quartz, and 10-12 parts spodumene. In the raw materials for strengthening the slurry layer, bauxite and alumina act as body strengthening agents, significantly enhancing the structural strength of the body and improving high-temperature stability. During firing, they absorb the deformation caused by cracking in the cracked slurry layer, preventing cracking of the body itself and increasing the body strength. Cordierite is easily fusible, improving its adhesion to the body and other glazes. This allows the strengthening slurry layer to act as a transition layer, absorbing the deformation caused by cracking and preventing cracks from propagating to the body. Therefore, when cracks from the cracked slurry layer propagate to the strengthening slurry layer, only a small number of hidden cracks are generated, and very few further propagate to the body, effectively ensuring the strength of the body.

[0028] The raw materials for the textured mud layer, by weight, include the following components: 40-50 parts clay, 20-25 parts pumice, 10-12 parts diatomite, 20-30 parts calcium carbonate, 15-20 parts potassium feldspar, 10-12 parts kaolin, and 5-8 parts quartz. Traditional methods of preparing crackle glaze using a thick base glaze and a thin top glaze result in an excessively thick base glaze, which easily causes cracking of the body and the top glaze during firing. Furthermore, due to the thickness of the base glaze, when used as the texture layer, it can only be applied by multiple spraying or dipping processes, making it impossible to use painting techniques to create the texture. Therefore, it is difficult to achieve both crackle and painted effects simultaneously. In this invention, the raw materials of the crackle slurry layer contain pumice and diatomaceous earth, which have high porosity and low density. When added to the crackle slurry, they easily expand and form cracks during firing, thereby causing the decorative layer above to crack as well. Therefore, the thickness of the decorative layer can be very thin, eliminating the need for a thick glaze. Decorative glaze can be applied directly using painting techniques, facilitating the formation of different patterns.

[0029] The raw materials for the colored pigments, by weight, include the following components in sequence: 30 parts raw starch, 20 parts red pigment, 10 parts yellow pigment, 30 parts New Zealand kaolin powder, 0.3 parts American adhesive powder, and 65 parts water. The main component of the raw starch is hydroxyapatite, which has high hardness and good biocompatibility. The adhesive powder is polyurethane powder, composed of polyester or polyether-type polyurethane prepolymer, curing agent, etc., with high viscosity. It has advantages such as good weather resistance, strong chemical corrosion resistance, and strong adhesion. Different components and formulations of pigments are used to prepare colored pigments of different colors, which are applied to the textured slurry layer to form different colored patterns.

[0030] The raw materials for the colorant, by weight, include the following components in sequence: 30 parts raw starch, 25 parts light blue pigment, 10 parts dark blue pigment, 30 parts New Zealand kaolin powder, 0.3 parts American adhesive powder, and 65 parts water.

[0031] The raw materials for the colorant, by weight, include the following components in sequence: 30 parts raw starch, 14 parts yellow pigment, 16 parts light blue pigment, 30 parts New Zealand kaolin powder, 0.3 parts American adhesive powder, and 65 parts water.

[0032] The raw materials for the color-changing flow glaze, by weight, include the following components: 40-45 parts white frit glaze, 12-15 parts boron frit, 12-15 parts phosphorus frit, 12-14 parts alumina, 10-12 parts bone ash, 12-15 parts dolomite, 4-5 parts iron oxide, 8-10 parts borax, 4-6 parts vanadium pentoxide, 5-8 parts praseodymium-neodymium oxide, 10-12 parts alumina, 8-10 parts wollastonite, 5-6 parts titanium dioxide, and 5-8 parts zinc oxide. Zinc oxide and titanium oxide act as phase-separating crystallizers, while also reducing the high-temperature viscosity of the glaze, improving its high-temperature fluidity, and promoting phase separation and crystallization. Boron frit, phosphorus frit, and vanadium pentoxide can alter the surface tension of the color-changing flow glaze, improve the high-temperature ductility of the melt, and promote the fusion and penetration of the color-changing flow glaze and the transparent glaze, causing the glaze surface to change textures and form flow patterns. The glaze surface appears as a bluish-white flow pattern. The yellow axe added to the glaze emits red fluorescence under ultraviolet light, and praseodymium and neodymium oxides enhance the coloring effect of the fluorescent substances. Therefore, the glaze has a color-changing effect after firing. When irradiated with ultraviolet light, the glaze surface exhibits a dark red fluorescence, which not only has unique ornamental value but can also serve as an anti-counterfeiting mark for ceramic art works.

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

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

[0035] Step a: Prepare the blank;

[0036] Step b: Take a portion of the blank material, roll it into a strip, cut off one end of the blank material, and pinch it into the shape of a single petal;

[0037] Step c: Take a piece of raw material and knead it to form the shape of a flower branch, then gather multiple petals around the flower branch;

[0038] Step d: Take a strip of blank material and pinch the top of it into the shape of a flower stamen;

[0039] Step f: Insert the stamen into the center of the enclosed petals;

[0040] Step e: The green body is placed in the kiln for bisque firing;

[0041] Step e: Apply a reinforcing slurry layer, a textured slurry layer, a decorative layer, and a transparent glaze layer sequentially to the surface of the bisque-fired petal body. The reinforcing slurry layer and the textured slurry layer can be applied by immersion, the decorative layer can be applied by glazing, spraying, or brush painting, and the transparent glaze can be applied by glazing or spraying. After each layer is applied, dry it before applying the next layer.

[0042] Step f: Firing the glaze in a kiln at a high temperature of 1360℃.

[0043] 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 high-temperature underglaze porcelain flower, characterized in that: It includes a flower branch, a stamen, and petals. The stamen is located at the top of the flower branch, and multiple petals surround the flower branch and the stamen. The surface of the stamen is provided with recessed patterns. The petal comprises a blank, the surface of which is sequentially covered with a reinforced slurry layer, a crackled slurry layer, a decorative layer, and a transparent glaze layer. The decorative layer is an underglaze pattern and / or a color-changing flow pattern. The raw material of the reinforced slurry layer is reinforced slurry, the raw material of the crackled slurry layer is crackled slurry, the raw material of the underglaze pattern is a colored pigment, the raw material of the color-changing flow pattern is a color-changing flow glaze, and the raw material of the transparent glaze layer is a transparent glaze. The raw materials for the reinforced mud layer, by weight, include the following components: 12-18 parts of bauxite, 10-12 parts of alumina, 30-35 parts of potassium feldspar, 30-35 parts of kaolinite, 10-12 parts of cordierite, 5-8 parts of quartz, and 10-12 parts of spodumene. The raw materials of the textured mud layer, by weight, include the following components: 40-50 parts clay, 20-25 parts pumice, 10-12 parts diatomite, 20-30 parts calcium carbonate, 15-20 parts potassium feldspar, 10-12 parts kaolin, and 5-8 parts quartz. The raw material for the colorant is one of the following formulas: The raw materials of the colorant, by weight, include the following components in sequence: 30 parts of raw starch, 20 parts of red pigment, 10 parts of yellow pigment, 30 parts of New Zealand kaolin powder, 0.3 parts of American adhesive powder, and 65 parts of water. The raw materials of the colorant, by weight, include the following components in sequence: 30 parts of cornstarch, 25 parts of aquamarine pigment, 10 parts of dark blue pigment, 30 parts of New Zealand kaolin powder, 0.3 parts of American adhesive powder, and 65 parts of water. The raw materials of the colorant, by weight, include the following components in sequence: 30 parts of cornstarch, 14 parts of yellow pigment, 16 parts of aquamarine pigment, 30 parts of New Zealand kaolin powder, 0.3 parts of American adhesive powder, and 65 parts of water. The main component of the raw starch is hydroxyapatite, and the American adhesive powder is polyurethane adhesive powder. The raw materials of the color-changing flow glaze, by weight, include the following components: 40-45 parts white frit glaze, 12-15 parts boron frit, 12-15 parts phosphorus frit, 12-14 parts alumina, 10-12 parts bone ash, 12-15 parts dolomite, 4-5 parts iron oxide, 8-10 parts borax, 4-6 parts vanadium pentoxide, 5-8 parts praseodymium-neodymium oxide, 10-12 parts alumina, 8-10 parts wollastonite, 5-6 parts titanium oxide, and 5-8 parts zinc oxide. The raw materials of the transparent glaze, by weight, include the following components: 30-40 parts feldspar, 20-30 parts limestone, 12-15 parts zinc oxide, 5-7 parts clay, 12-14 parts kaolin, and 6-8 parts quartz.

2. The preparation process of high-temperature underglaze porcelain flowers according to claim 1, characterized in that, Includes the following steps: Step a: Prepare the blank; Step b: Take a portion of the blank material, roll it into a strip, cut off one end of the blank material, and pinch it into the shape of a single petal; Step c: Take a piece of raw material and knead it to form the shape of a flower branch, then gather multiple petals around the flower branch; Step d: Take a strip of blank material and pinch the top of it into the shape of a flower stamen; Step f: Insert the stamen into the center of the enclosed petals; Step e: The green body is placed in the kiln for bisque firing; Step e: Apply a strengthening slurry layer, a crackling slurry layer, a decorative layer, and a transparent glaze layer sequentially to the surface of the bisque-fired petal body. Step f: Firing the glaze in a kiln at a high temperature of 1360℃.