Domestic ceramic product and preparation method thereof

Abstract

The invention relates to the technical field of ceramic materials and preparation, in particular to a domestic ceramic product and a preparation method thereof, and the preparation method comprises a green body preparation process, a glaze preparation process and a sintering process. Red quartz, feldspar and other natural minerals are preferably selected as raw materials of a green body, magnesium oxide and zinc oxide are introduced into a glaze formula, and the ceramic is endowed with excellent antibacterial performance and self-cleaning capacity. According to the ceramic product and the preparation method thereof, optimized ball milling time and filter-pressing rolling forming, drying and firing processes are combined, the compactness of a green body and the glossiness of a glaze surface are improved, meanwhile, the production cost is reduced, the invention further provides improvement measures for attractiveness, durability and environmental protection, and the ceramic product is suitable for the fields of tableware, kitchen utensils and the like and has a wide market prospect.

Description

Technical Field

[0001] This invention belongs to the field of ceramic materials, specifically relating to a daily-use ceramic product that combines antibacterial and self-cleaning functions, is aesthetically pleasing, durable, and cost-controllable, as well as its preparation method. Background Technology

[0002] With the widespread application of daily-use ceramics in tableware, kitchen utensils, and other fields, consumers have placed higher demands on the antibacterial hygiene, self-cleaning convenience, durability, and aesthetics of these products. In existing technologies, some antibacterial ceramics rely on adsorbent antibacterial agents, resulting in uneven antibacterial effects; some solutions focus on the aesthetics of the glaze while neglecting antibacterial function, and their complex processes lead to high production costs, making it difficult to meet the needs of large-scale promotion.

[0003] A search revealed that patent CN118754604B relates to a recycled daily-use ceramic product and its manufacturing process. This technology utilizes waste ceramic products to create ceramic blanks, and adds an inorganic antibacterial agent (copper and zinc ions adsorbed on illite powder) combined with the electrostatic adsorption of sepiolite fibers and glass flake powder as an inorganic modifying additive. This produces ceramic products with excellent antibacterial, corrosion-resistant, and mechanical properties. However, the uniformity of the antibacterial agent distribution in this technology depends on the stability of the adsorption process. Improper process control may lead to uneven antibacterial effects. Furthermore, this solution does not adequately consider the self-cleaning properties of the ceramic surface, which may fail to meet consumers' high requirements for tableware hygiene during long-term use.

[0004] A search revealed that patent CN114956565B relates to a method for preparing transparent glaze and daily-use ceramic products. This technical solution optimizes the glaze formula (including raw materials such as kaolin, quartz, carbide slag, and cordierite) to produce ceramic products with fewer pinholes, fewer impurities, and no discoloration. However, this technical solution mainly focuses on the transparency and aesthetics of the glaze, with limited attention to antibacterial properties, failing to effectively solve the problem of bacterial growth in ceramic products during actual use. Furthermore, its complex raw material ratios and firing process may lead to high production costs, hindering large-scale promotion.

[0005] The aforementioned problems indicate that existing daily-use ceramic products and their preparation methods still have certain shortcomings in terms of the durability of antibacterial properties, the realization of self-cleaning functions, and the economic efficiency of production processes. Therefore, this invention provides a novel daily-use ceramic product and its preparation method, aiming to improve the antibacterial properties and self-cleaning ability of ceramics by optimizing material formulations and process flows, while simplifying the production process and reducing production costs, thereby meeting the market demand for hygienic and aesthetically pleasing daily-use ceramic products. Summary of the Invention

[0006] This application provides a daily-use ceramic product and its preparation method. By scientifically proportioning the raw materials of the body and glaze and optimizing key process parameters, it achieves a synergistic improvement in antibacterial properties, self-cleaning ability, durability, and economy, thereby meeting the market demand for hygienic and aesthetically pleasing daily-use ceramic products. Furthermore, this invention uses Yellow River clay as the main colorant. This raw material is rich in two key elements, iron and manganese, which are the core components determining the coloring effect of Yellow River clay and the firing performance of ceramics. During the ceramic firing process, iron gives the body and glaze a reddish-brown base tone, while manganese works synergistically with iron to precisely control the depth of color of the glaze and body, ultimately restoring the unique rustic colors of Yangshao painted pottery.

[0007] In a first aspect, this application provides a method for preparing daily-use ceramic products, comprising the following steps: S10: Mixing raw materials for the green body. According to the mass percentage, mix 25%~35% red quartz, 20%~30% feldspar, 10%~15% white clay, 20%~30% Yellow River clay, 5%~10% virgin clay, and 2%~5% dolomite evenly to obtain raw materials for the green body. S20: Preparation of green body slurry, the green body raw material is ball-milled with deionized water as medium for 10-12 hours, the ball-to-material ratio is 1.8:1-2:1, and a green body slurry with a particle size of 10-20 micrometers is obtained; S30: Slurry filtration, the green body slurry is filtered to control the water content of the clay rod to be 20%~21%; S40: Press molding, pressing the clay blank into shape, with a pressing pressure of 20~30 MPa, and the thickness of the blank after molding is 5~8 mm; S50: Single bisque firing, the shaped body is bisque fired in a kiln at a temperature of 450~480 degrees Celsius and held for 4~5 hours. After cooling, the painted pottery body is obtained. S60: Glaze raw material mixing: According to the mass percentage, 20%~30% white quartz, 40%~50% feldspar, 10%~15% red clay, 10%~15% Yellow River clay, 5%~8% dolomite, 3%~5% magnesium oxide, and 3%~5% zinc oxide are mixed evenly to obtain glaze raw materials. S70: Preparation of glaze material: The glaze material is mixed with deionized water at a mass ratio of 1:0.6 to 1:0.9, and the ball milling time is 20 to 30 hours. The ball milling media is zirconia balls, and the ball-to-material ratio is 2:1 to 3:1 to obtain a glaze slurry with a particle size of 5 to 10 micrometers. S80: Glazing method, the glaze slurry is evenly coated on the surface of the painted pottery body, and the coating thickness is 0.2~0.5 mm; S90: Secondary sintering, the glazed ceramic body is glazed and fired twice in a kiln at a temperature of 1170~1220 degrees Celsius for 5~6 hours. After cooling, the finished daily-use ceramic products are obtained.

[0008] According to this application, by introducing specific proportions of red quartz, feldspar, kaolin, Yellow River clay, rammed earth, and dolomite into the raw materials of the green body, combined with optimized ball milling time, pressure filtration, rolling forming, drying, and firing processes, the green body achieves high density and mechanical strength while reducing its water absorption rate. Adding appropriate amounts of magnesium oxide and zinc oxide to the glaze formula not only improves the smoothness and gloss of the glaze surface but also endows the ceramic products with excellent antibacterial properties and self-cleaning capabilities.

[0009] In some embodiments, in step S10, the mass percentage of red quartz is preferably 30%, the mass percentage of feldspar is preferably 25%, the mass percentage of white clay is preferably 15%, the mass percentage of Yellow River clay is preferably 20%, the mass percentage of raw clay is preferably 8%, and the mass percentage of dolomite is preferably 2%. The above proportions can effectively balance the mechanical properties and thermal stability of the green body, and avoid cracking or deformation problems caused by excessive content of a single component.

[0010] In some embodiments, in step S20, the ball milling time is preferably 10 hours, and the ball-to-material ratio is preferably 1.8:1. By controlling the ball milling time and the ball-to-material ratio, the particle size distribution of the green body slurry is ensured to be uniform, avoiding the impact of excessively large or small particles on the forming performance and sintering effect of the green body.

[0011] In some embodiments, in step S30, the green body slurry is filtered to control the water content of the clay rod to 20.5% for the green body clay, which has stable plasticity and facilitates subsequent pressing and molding operations.

[0012] In some embodiments, in step S40, the pressing pressure is preferably 25 MPa, and the thickness of the formed blank is preferably 7 mm. By controlling the pressing pressure and the blank thickness, sufficient mechanical strength and dimensional stability of the blank are ensured, avoiding sintering defects caused by excessive or insufficient thickness.

[0013] In some embodiments, in step S50, the sintering temperature is preferably 450 degrees Celsius, and the firing time is preferably 5 hours. By optimizing the sintering process parameters, the growth and densification of grains inside the green body are promoted, thereby improving the overall performance of the ceramic product.

[0014] In some embodiments, in step S60, the mass percentage of white quartz is preferably 25%, the mass percentage of feldspar is preferably 35%, the mass percentage of red clay is preferably 15%, the mass percentage of Yellow River clay is preferably 10%, the mass percentage of dolomite is preferably 8%, the mass percentage of magnesium oxide is preferably 4%, and the mass percentage of zinc oxide is preferably 3%. The above glaze formulation can significantly improve the smoothness and antibacterial properties of the glaze surface, while avoiding glaze cracking or peeling problems caused by improper component ratios.

[0015] In some embodiments, in step S70, the ball milling time is preferably 25 hours, and the ball-to-material ratio is preferably 2.5:1. By controlling the ball milling time and the ball-to-material ratio, the particle size distribution of the glaze slurry is ensured to be uniform, avoiding the impact of excessively large or small particles on the coating effect and sintering performance of the glaze surface.

[0016] In some embodiments, the coating thickness of the glaze slurry in step S80 is preferably 0.3 mm. By controlling the coating thickness, good adhesion and uniformity of the glaze surface are ensured, and glaze surface defects caused by excessively thick or thin coatings are avoided.

[0017] In some embodiments, in step S90, the glazed ceramic body is subjected to a second glaze firing in a kiln at a temperature of 1200 degrees Celsius for 6 hours. After cooling, the finished daily-use ceramic product is obtained. By optimizing the secondary glaze firing process parameters, the bonding between the glaze and the body is promoted, thereby improving the overall performance and appearance quality of the ceramic product.

[0018] Secondly, this application provides a daily-use ceramic product prepared according to the method described in any embodiment of the first aspect.

[0019] According to this application, since the daily-use ceramic product is prepared according to the method described in any embodiment of the first aspect, it has the beneficial effects of the first aspect.

[0020] Thirdly, this application further provides specific methods for achieving the antibacterial properties and self-cleaning ability of the daily-use ceramic product. Appropriate amounts of Yellow River clay and rough clay are introduced into the raw materials of the body. These two raw materials contain a certain amount of natural minerals, which can form a crystal structure with antibacterial activity during high-temperature sintering. In addition, magnesium oxide and zinc oxide are added to the glaze formula. These two components can react with other components in the glaze during sintering to generate composite oxides with antibacterial functions. Through the above technical means, the surface of the ceramic product can effectively inhibit the growth and reproduction of bacteria, while also possessing a certain self-cleaning ability, reducing the adhesion and accumulation of dirt.

[0021] Fourthly, this application also provides the economic advantages of this daily-use ceramic product. By optimizing the formulation ratio of the body and glaze, the amount of expensive raw materials used is reduced, while the production process is simplified, thus lowering production costs. For example, red quartz and feldspar are used as the main components in the body raw materials, replacing some high-cost mineral raw materials; and by rationally adjusting the amount of magnesium oxide and zinc oxide in the glaze formulation, the cost increase caused by excessive addition is avoided. The above-mentioned technical means not only improve the cost-effectiveness of the ceramic product, but also lay the foundation for its large-scale production and market promotion.

[0022] Fifthly, this application further provides a method for enhancing the aesthetics of the daily-use ceramic product. By introducing appropriate amounts of red clay and Yellow River clay into the glaze formula, these two raw materials, containing trace amounts of iron and other metal oxides, can form unique color effects during the sintering process. Furthermore, by controlling the particle size distribution and coating thickness of the glaze slurry, good gloss and smoothness of the glaze surface are ensured, thereby improving the overall appearance quality of the ceramic product.

[0023] Sixthly, this application also provides measures to improve the durability of the daily-use ceramic product. An appropriate amount of dolomite, containing calcium carbonate and magnesium carbonate, is introduced into the raw material of the body. This material decomposes during high-temperature sintering to generate calcium oxide and magnesium oxide, filling the pores inside the body and improving its density and crack resistance. Furthermore, by optimizing the ratio of magnesium oxide to zinc oxide in the glaze formula, the hardness and wear resistance of the glaze surface are enhanced, extending the service life of the ceramic product.

[0024] Seventhly, this application further provides the environmentally friendly characteristics of the daily-use ceramic product. In the preparation of the body and glaze, deionized water is used as the ball milling medium, avoiding the environmental pollution problems caused by the use of organic solvents in traditional processes. Furthermore, by optimizing the sintering process parameters, energy consumption and waste gas emissions are reduced, conforming to the concept of green and environmentally friendly production.

[0025] Eighthly, this application further provides the scope of application of this daily-use ceramic product. Due to its excellent antibacterial properties, self-cleaning ability, and aesthetic appeal, this ceramic product is particularly suitable for tableware, such as bowls, plates, cups, and other daily necessities. Furthermore, due to its good durability and environmental friendliness, this ceramic product can also be widely used in kitchen utensils, decorative items, and other fields, possessing broad market prospects and development potential. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the following embodiments provide a more detailed description of the invention. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention.

[0027] Current daily-use ceramic products suffer from insufficient antibacterial properties, weak self-cleaning ability, and high production costs. Therefore, this application provides a daily-use ceramic product and its preparation method, aiming to improve the overall performance of the ceramic product by optimizing the body and glaze formulations and the process flow.

[0028] In a first aspect, this application provides a method for preparing daily-use ceramic products, comprising the following steps: S10: Mixing raw materials for the green body. According to the mass percentage, mix 25%~35% red quartz, 20%~30% feldspar, 10%~15% white clay, 20%~30% Yellow River clay, 5%~10% virgin clay, and 2%~5% dolomite evenly to obtain raw materials for the green body. S20: Preparation of green body slurry, the green body raw material is ball-milled with deionized water as medium for 10-12 hours, the ball-to-material ratio is 1.8:1-2:1, and a green body slurry with a particle size of 10-20 micrometers is obtained; S30: Slurry filtration, the green body slurry is filtered to control the water content of the clay rod to be 20%~21%; S40: Press molding, pressing the clay blank into shape, with a pressing pressure of 20~30 MPa, and the thickness of the blank after molding is 5~8 mm; S50: Single bisque firing, the shaped body is bisque fired in a kiln at a temperature of 450~480 degrees Celsius and held for 4~5 hours. After cooling, the painted pottery body is obtained. S60: Glaze raw material mixing: According to the mass percentage, 20%~30% white quartz, 40%~50% feldspar, 10%~15% red clay, 10%~15% Yellow River clay, 5%~8% dolomite, 3%~5% magnesium oxide, and 3%~5% zinc oxide are mixed evenly to obtain glaze raw materials. S70: Preparation of glaze material: The glaze material is mixed with deionized water at a mass ratio of 1:0.6 to 1:0.9, and the ball milling time is 20 to 30 hours. The ball milling media is zirconia balls, and the ball-to-material ratio is 2:1 to 3:1 to obtain a glaze slurry with a particle size of 5 to 10 micrometers. S80: Glazing method, the glaze slurry is evenly coated on the surface of the painted pottery body, and the coating thickness is 0.2~0.5 mm; S90: Secondary sintering, the glazed ceramic body is glazed and fired twice in a kiln at a temperature of 1170~1220 degrees Celsius for 5~6 hours. After cooling, the finished daily-use ceramic products are obtained.

[0029] According to this application, in step S10, red quartz, feldspar, white clay, Yellow River clay, rammed earth, and dolomite are directly mixed evenly in a specific ratio to ensure a uniform distribution of the raw materials in the green body. The selection and proportioning of the above raw materials can effectively balance the mechanical properties and thermal stability of the green body, avoiding cracking or deformation problems caused by excessive content of a single component.

[0030] In step S20, the uniform particle size distribution of the green body slurry is ensured by controlling the ball milling time and ball-to-material ratio. During ball milling, deionized water is used as the milling medium to avoid introducing impurities while maintaining the slurry's fluidity. The preferred ball milling time is 10 hours, and the preferred ball-to-material ratio is 1.8:1. These parameters ensure that the particle size of the green body slurry is controlled within the range of 10-20 micrometers, thereby improving the subsequent forming and sintering effects.

[0031] In step S30, the green body slurry is filtered to control the water content of the clay rod to 20.5%; the green body clay has stable plasticity, which facilitates subsequent pressing and molding operations.

[0032] In step S40, by controlling the pressing pressure and the blank thickness, sufficient mechanical strength and dimensional stability of the blank are ensured. The pressing pressure is preferably 25 MPa, and the blank thickness after forming is preferably 6 mm. These parameters can avoid sintering defects caused by excessive or insufficient thickness.

[0033] In step S50, the growth and densification of grains inside the green body are promoted by controlling the sintering temperature and holding time. The preferred sintering temperature is 450 degrees Celsius, and the preferred holding time is 5 hours. These process parameters can improve the overall performance of the ceramic green body while reducing the presence of porosity within the green body.

[0034] In step S60, white quartz, feldspar, red clay, Yellow River clay, dolomite, magnesium oxide, and zinc oxide are directly mixed evenly in a specific ratio to ensure uniform distribution of the glaze raw materials. The selection and proportioning of the above raw materials can significantly improve the smoothness and gloss of the glaze surface, while avoiding glaze cracking or peeling caused by improper component ratios.

[0035] In step S70, the uniform particle size distribution of the glaze slurry is ensured by controlling the ball milling time and the ball-to-material ratio. The ball milling time is preferably 25 hours, and the ball-to-material ratio is preferably 2.5:1. These parameters ensure that the particle size of the glaze slurry is controlled within the range of 5 to 10 micrometers, thereby improving the effect of subsequent coating and sintering.

[0036] In step S80, by controlling the coating thickness, good adhesion and uniformity of the glaze are ensured. The coating thickness is preferably 0.3 mm, and this parameter can avoid glaze defects caused by coating too thick or too thin.

[0037] In step S90, the bonding between the glaze and the body is promoted by controlling the secondary sintering temperature and holding time. The preferred secondary sintering temperature is 1220 degrees Celsius, and the preferred holding time is 6 hours. These process parameters can improve the overall performance and appearance quality of ceramic products.

[0038] The following describes embodiments of this application. The embodiments described below are exemplary and are only used to explain this application, and should not be construed as limiting this application. Where specific techniques or conditions are not specified in the embodiments, they are performed according to the techniques or conditions described in the literature in this field or according to the product instructions. Reagents or instruments used, unless otherwise specified, are all conventional products that can be obtained commercially.

[0039] Example 1 S10: Mix 30% red quartz, 20% feldspar, 10% white clay, 30% Yellow River clay, 8% rammed earth, and 2% dolomite evenly to obtain the raw material for the green body; S20: The raw material of the green body is ball-milled for 12 hours. The ball-milling medium is deionized water and the ball-to-material ratio is 1.8:1 to obtain a green body slurry with a particle size of 15 micrometers. S30: The green body slurry is filtered by pressure to control the water content of the mud rod to 20%; S40: Press the green body powder into shape at a pressure of 25 MPa, and the thickness of the green body after forming is 6 mm. S50: The formed green body is bisque fired in a kiln at a temperature of 450 degrees Celsius for 5 hours. After cooling, a ceramic green body is obtained. S60: Mix 25% white quartz, 35% feldspar, 15% red clay, 10% Yellow River clay, 8% dolomite, 4% magnesium oxide, and 3% zinc oxide evenly to obtain glaze raw materials. S70: Mix the glaze raw material with deionized water at a mass ratio of 1:0.9, ball mill for 20 hours, use zirconia balls as the milling medium, and the ball-to-material ratio is 2:1 to obtain a glaze slurry with a particle size of 5 micrometers. S80: Apply the glaze slurry evenly to the surface of the ceramic body, with a coating thickness of 0.3 mm; S90: The glazed ceramic body is sintered twice in a kiln at a temperature of 1220 degrees Celsius for 6 hours. After cooling, the finished daily-use ceramic products are obtained.

[0040] Example 2 S10: Mix 25% red quartz, 27% feldspar, 10% white clay, 30% Yellow River clay, 5% rammed earth, and 5% dolomite evenly to obtain the raw material for the green body; S20: The raw material of the green body is ball-milled for 10 hours. The ball-milling medium is deionized water and the ball-to-material ratio is 2:1 to obtain a green body slurry with a particle size of 20 micrometers. S30: The green body slurry is filtered by pressure to control the water content of the mud rod to 20.5%; S40: Press the green body powder into shape at a pressure of 20 MPa, and the thickness of the green body after forming is 8 mm. S50: The shaped blank is bisque-fired in a kiln at a temperature of 450 degrees Celsius for 4.5 hours. After cooling, the painted pottery blank is obtained. S60: Mix 25% white quartz, 30% feldspar, 15% red clay, 14% Yellow River clay, 8% dolomite, 4% magnesium oxide, and 4% zinc oxide evenly to obtain glaze raw materials. S70: Mix the glaze raw material with deionized water at a mass ratio of 1:1, ball mill for 25 hours, use zirconia balls as the milling medium, and the ball-to-material ratio is 2.5:1 to obtain a glaze slurry with a particle size of 8 micrometers. S80: Apply the glaze slurry evenly to the surface of the ceramic body, with a coating thickness of 0.5 mm; S90: The glazed ceramic body is sintered twice in a kiln at a temperature of 1200 degrees Celsius for 5.5 hours. After cooling, the finished daily-use ceramic products are obtained.

[0041] Example 3 S10: Mix 25% red quartz, 30% feldspar, 8% white clay, 27% Yellow River clay, 5% rammed earth, and 5% dolomite evenly to obtain the raw material for the green body; S20: The raw material of the green body is ball-milled for 10 hours. The ball-milling medium is deionized water and the ball-to-material ratio is 2:1 to obtain a green body slurry with a particle size of 20 micrometers. S30: The green body slurry is filtered by pressure to control the water content of the mud rod to 21%; S40: Press the green body powder into shape at a pressure of 30 MPa, and the thickness of the green body after forming is 5 mm. S50: The shaped blank is bisque-fired in a kiln at a temperature of 450 degrees Celsius for 5 hours. After cooling, the painted pottery blank is obtained. S60: Mix 20% white quartz, 30% feldspar, 15% red clay, 16% Yellow River clay, 10% dolomite, 5% magnesium oxide, and 4% zinc oxide evenly to obtain glaze raw materials. S70: Mix the glaze raw material with deionized water at a mass ratio of 1:0.6, ball mill for 30 hours, use zirconia balls as the milling medium, and the ball-to-material ratio is 3:1 to obtain a glaze slurry with a particle size of 5 micrometers; S80: Apply the glaze slurry evenly to the surface of the ceramic body, with a coating thickness of 0.2 mm; S90: The glazed ceramic body is sintered twice in a kiln at a temperature of 1170 degrees Celsius for 5 hours. After cooling, the finished daily-use ceramic products are obtained.

[0042] Comparative Example 1 S10: Mix 35% red quartz, 20% feldspar, 10% white clay, 25% Yellow River clay, 5% rammed earth, and 5% dolomite evenly to obtain the raw material for the green body; S20: The raw material of the green body is ball-milled for 8 hours. The ball-milling medium is deionized water and the ball-to-material ratio is 1.8:1 to obtain a green body slurry with a particle size of 30 micrometers. S30: The green body slurry is filtered to control the water content of the clay rod to 20.5%; the green body clay has stable plasticity, which facilitates subsequent pressing and molding operations; S40: Press the clay blank into shape at a pressure of 15 MPa, and the thickness of the blank after shaping is 8 mm. S50: The shaped blank is bisque-fired in a kiln at a temperature of 450 degrees Celsius for 5 hours. After cooling, the painted pottery blank is obtained. S60: Mix 20% white quartz, 40% feldspar, 10% red clay, 15% Yellow River clay, 8% dolomite, 2% magnesium oxide, and 5% zinc oxide evenly to obtain glaze raw materials. S70: Mix the glaze raw material with deionized water at a mass ratio of 1:0.5, ball mill for 25 hours, use alumina balls as the milling medium, and the ball-to-material ratio is 2:1 to obtain a glaze slurry with a particle size of 15 micrometers. S80: Apply the glaze slurry evenly to the surface of the ceramic body, with a coating thickness of 0.5 mm; S90: The glazed ceramic body is sintered twice in a kiln at a temperature of 1180 degrees Celsius for 5 hours. After cooling, the finished daily-use ceramic products are obtained.

[0043] Comparative Example 2 S10: Mix 40% red quartz, 20% feldspar, 10% white clay, 15% Yellow River clay, 10% rammed earth, and 5% dolomite evenly to obtain the raw material for the green body; S20: The raw material of the green body is ball-milled for 9 hours. The ball-milling medium is deionized water and the ball-to-material ratio is 2:1 to obtain a green body slurry with a particle size of 15 micrometers. S30: The green body slurry is filtered to control the water content of the clay rod to 20.5%; the green body clay has stable plasticity, which facilitates subsequent pressing and molding operations; S40: Press the green body powder into shape at a pressure of 35 MPa, and the thickness of the green body after molding is 10 mm. S50: The shaped blank is bisque-fired in a kiln at a temperature of 450 degrees Celsius for 5 hours. After cooling, the painted pottery blank is obtained. S60: Mix 40% white quartz, 10% feldspar, 15% red clay, 15% Yellow River clay, 10% dolomite, 5% magnesium oxide, and 5% zinc oxide evenly to obtain glaze raw materials. S70: Mix the glaze raw material with deionized water at a mass ratio of 1:1, ball mill for 30 hours, use alumina balls as the milling medium, and the ball-to-material ratio is 3:1 to obtain a glaze slurry with a particle size of 3 micrometers. S80: Apply the glaze slurry evenly to the surface of the ceramic body, with a coating thickness of 0.3 mm; S90: The glazed ceramic body is sintered twice in a kiln at a temperature of 1250 degrees Celsius for 6 hours. After cooling, the finished daily-use ceramic products are obtained.

[0044] The performance of the daily-use ceramic products obtained in the above embodiments and comparative examples was tested, and the results are shown in the table below:

[0045] According to the results in the table, the daily-use ceramic products obtained in this application have higher antibacterial properties, self-cleaning ability and density compared with the comparative examples. At the same time, the glaze surface is smoother and the production cost is lower. The comparative examples 1 and 2 have poor overall performance due to unreasonable body and glaze formulations and process parameters.

[0046] This invention, through raw material optimization and process innovation, solves the problems of uneven antibacterial properties, insufficient self-cleaning ability, and high cost of existing daily-use ceramics. The product is suitable for tableware, kitchen utensils, and decorative items, and has broad market prospects. Any modifications, equivalent substitutions, and improvements made within the technical principles and scope of this invention should be included within the protection scope of this invention.

Claims

1. A method for preparing daily-use ceramic products, characterized in that, Includes the following steps: S10: Mixing raw materials for the green body. According to the mass percentage, mix 25%~35% red quartz, 20%~30% feldspar, 10%~15% white clay, 20%~30% Yellow River clay, 5%~10% virgin clay, and 2%~5% dolomite evenly to obtain raw materials for the green body. S20: Preparation of green body slurry, the green body raw material is ball-milled with deionized water as medium for 10-12 hours, the ball-to-material ratio is 1.8:1-2:1, and a green body slurry with a particle size of 10-20 micrometers is obtained; S30: Slurry filtration, the green body slurry is filtered to control the water content of the clay rod to be 20%~21%; S40: Press molding, pressing the clay blank into shape, with a pressing pressure of 20~30 MPa, and the thickness of the blank after molding is 5~8 mm; S50: Single bisque firing, the shaped body is bisque fired in a kiln at a temperature of 450~480 degrees Celsius and held for 4~5 hours. After cooling, the painted pottery body is obtained. S60: Glaze raw material mixing: According to the mass percentage, 20%~30% white quartz, 40%~50% feldspar, 10%~15% red clay, 10%~15% Yellow River clay, 5%~8% dolomite, 3%~5% magnesium oxide, and 3%~5% zinc oxide are mixed evenly to obtain glaze raw materials. S70: Preparation of glaze material: The glaze material is mixed with deionized water at a mass ratio of 1:0.6 to 1:0.9, and the ball milling time is 20 to 30 hours. The ball milling media is zirconia balls, and the ball-to-material ratio is 2:1 to 3:1 to obtain a glaze slurry with a particle size of 5 to 10 micrometers. S80: Glazing method, the glaze slurry is evenly coated on the surface of the painted pottery body, and the coating thickness is 0.2~0.5 mm; S90: Secondary sintering, the glazed ceramic body is glazed and fired twice in a kiln at a temperature of 1170~1220 degrees Celsius for 5~6 hours. After cooling, the finished daily-use ceramic products are obtained.

2. The preparation method according to claim 1, characterized in that, In step S10, the mass percentage of red quartz is 30%, the mass percentage of feldspar is 25%, the mass percentage of white clay is 15%, the mass percentage of Yellow River clay is 20%, the mass percentage of raw clay is 8%, and the mass percentage of dolomite is 2%.

3. The preparation method according to claim 1, characterized in that, In step S20, the ball milling time is 10 hours and the ball-to-material ratio is 1.8:

1.

4. The preparation method according to claim 1, characterized in that, In step S30, the green body slurry is filtered to control the water content of the mud rod to be 20.5%.

5. The preparation method according to claim 1, characterized in that, In step S40, the pressing pressure is 25 MPa, and the thickness of the formed blank is 7 mm.

6. The preparation method according to claim 1, characterized in that, In step S50, the sintering temperature is 450 degrees Celsius and the sintering time is 5 hours.

7. The preparation method according to claim 1, characterized in that, In step S60, the mass percentage of white quartz is 25%, the mass percentage of feldspar is 35%, the mass percentage of red clay is 15%, the mass percentage of Yellow River clay is 10%, the mass percentage of dolomite is 8%, the mass percentage of magnesium oxide is 4%, and the mass percentage of zinc oxide is 3%.

8. The preparation method according to claim 1, characterized in that, In step S70, the ball milling time is 25 hours and the ball-to-material ratio is 2.5:

1.

9. The preparation method according to claim 1, characterized in that, In step S80, the thickness of the glaze slurry coating is 0.3 mm.

10. A daily-use ceramic product, characterized in that, Prepared according to the method according to any one of claims 1 to 9.

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