Preparation method of hydrophilic self-cleaning glazed wine jar

Abstract

The preparation method of the hydrophilic self-cleaning glazed wine jar comprises the following steps: step 1, preparing a frit raw material; step 2, sintering the frit raw material to form a frit; 3, grinding the frit into particles with the particle size of less than 200 meshes, and adding methyl cellulose and a water reducing agent to adjust the performance of the glaze slip; 4, a pottery jar adobe is manufactured, soil glaze is sprayed, the thickness of the soil glaze is 0.48-0.52 mm, the glaze surface raw material prepared in the step 3 is sprayed to the surface of the pottery jar soil glaze, the spraying thickness is 0.1-0.2 mm, then the sprayed pottery jar adobe is sent into a kiln to be sintered, and the sintering temperature is 1150-1220 DEG C. According to the invention, by improving glaze surface firing materials and procedures, the flatness of the glaze surface is greatly improved, and dust on the formed self-cleaning glaze surface is not easy to retain, so that the dust is not easy to retain on the surface of the glaze surface under the action of surface airflow in the movement process of carrying and the like of the ceramic cylinder.

Description

Technical Field

[0001] This invention belongs to the field of ceramic technology, specifically ceramic glaze technology, and more specifically, a method for preparing a hydrophilic self-cleaning glazed wine jar. Background Technology

[0002] Large ceramic jars commonly used for storing wine in wineries tend to accumulate dust during production, transportation, and unloading due to their rough glaze. This requires dust removal before they can be stored in the winery cellar. Existing technology produces large ceramic jars with surface particles larger than 10 micrometers. This rough glaze not only easily accumulates dust but is also difficult to remove, increasing the time required for the winery's storage process. Furthermore, unclean jar surfaces can contaminate the winery's storage environment and affect the quality of the stored wine. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this invention discloses a method for preparing a hydrophilic self-cleaning glazed wine jar.

[0004] The method for preparing the hydrophilic self-cleaning glazed wine jar of the present invention includes the following steps: Step 1. Prepare the frit raw materials, in which potassium feldspar content is 10-15%, sodium feldspar content is 6-10%, mullite content is 70-80%, zinc oxide is 1-3%, and strontium carbonate is 0.5-3%; Step 2. Sinter the frit material at 1600-1700 degrees Celsius to form a frit; Step 3. Grind the frit into particles with a particle size of less than 200 mesh, and add methylcellulose and water-reducing agent to adjust the glaze properties; Step 4. Make the clay jar blank, spray the clay glaze normally, the thickness of the clay glaze is 0.48-0.52mm, spray the glaze material prepared in step 3 onto the surface of the clay glaze of the clay jar, the spray thickness is 0.1-0.2mm, and then send the sprayed clay jar blank into the kiln for sintering, the sintering temperature is 1150-1220 degrees Celsius.

[0005] Preferably, in step 3, sodium methyl cellulose is added to the cellulose at a ratio of 1-5 kg ​​per ton of raw material after grinding; and a water-reducing agent is added at a ratio of 3-8 kg per ton of raw material.

[0006] Preferably, the sintering process in step 2 specifically includes the following stages: Preheating stage: First, preheat from room temperature to 850 degrees Celsius, which takes 12-16 hours; Heating stage: The temperature is then raised to 850-1100 degrees Celsius to enter the oxidation and decomposition stage, which takes 4-8 hours. Insulation stage: After reaching 1100 degrees Celsius, it enters the high-temperature insulation stage. 45-90 minutes; Rapid cooling phase: The temperature is rapidly reduced from the highest temperature to 670-720 degrees Celsius, taking 2-3 hours; Slow cooling section: slow cooling for 12-16 hours, until the temperature drops below 160 degrees Celsius, then the product is removed from the kiln.

[0007] The method for preparing hydrophilic self-cleaning glazed wine jars described in this invention improves the glaze firing materials and processes, reducing the microscopic flatness of the glaze surface to 1 micrometer, thus significantly improving the glaze surface flatness. The resulting self-cleaning glaze surface is less prone to dust accumulation, making it less likely for dust to remain on the glaze surface during handling or other movements. Even if a small amount remains, it can be easily and quickly removed by blowing air or spraying water, improving the cleaning efficiency of the jars. Attached Figure Description

[0008] Figure 1 The diagram shown is a schematic flowchart of a specific embodiment of the method for preparing hydrophilic self-cleaning glazed wine jars according to the present invention. Figure 2 The diagram shows a comparison between the surface of the sample prepared by the hydrophilic self-cleaning glazed wine jar preparation method of the present invention and the glaze surface state when water droplets are added to the previous glaze. Detailed Implementation

[0009] To more intuitively and clearly describe the specific details of the technical solution of the present invention, a detailed description will be provided below in conjunction with specific embodiments and example drawings.

[0010] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0011] Specific Embodiment 1. The method for preparing the hydrophilic self-cleaning glazed wine jar of the present invention includes the following steps: Step 1. Prepare the frit raw materials: potassium feldspar content 12%, sodium feldspar content 8%, mullite 76%, zinc oxide 3%, strontium carbonate 1%; Step 2. Sinter the frit material at 1600-1700 degrees Celsius to form frit for later use.

[0012] Step 3. Grind the frit into particles with a particle size of less than 200 mesh using a ball mill, and add methylcellulose and water-reducing agent to adjust the glaze slurry properties; Cellulose, which can be sodium methylcellulose, is added at a ratio of 1-5 kg ​​per ton of raw material. Cellulose significantly enhances the plasticity of clay, making it softer and easier to shape. Simultaneously, cellulose has good water retention properties, effectively preventing the clay from drying out too quickly and cracking, thus increasing the yield. It also strengthens the adhesion between clay particles, making the clay more stable during firing and reducing the risk of breakage. Water-reducing agents, such as water glass or sodium tripolymetaphosphate, are added at a ratio of 3-8 kg per ton of raw material. They are mainly used to adjust the fluidity and viscosity of ceramic slurry, reducing the moisture content of cement or clay, thereby improving the formability and strength of ceramics.

[0013] The glaze slurry obtained in step 3 is used as the glaze material in step 3.

[0014] Step 4. Make the clay jar blank, spray the clay glaze normally, the thickness of the clay glaze is 0.5mm, spray the glaze raw material prepared in step 2 onto the clay glaze surface of the clay jar, the spray thickness is 0.1-0.2mm, and then send the sprayed clay jar blank into the kiln for sintering, the sintering temperature is 1200 degrees Celsius. In this step, the typical sintering process is as follows: First, preheat from room temperature to 850 degrees Celsius for about 15 hours, then raise the temperature to 1100 degrees Celsius to enter the oxidation decomposition stage, which takes 6 hours. After reaching 1100 degrees Celsius, enter the high-temperature holding stage. Due to heating inertia, the temperature will continue to rise. The holding stage generally takes 60 minutes, during which the temperature will slowly rise by about 50-100 degrees Celsius. Then enter the rapid cooling stage, which rapidly reduces the temperature from the highest temperature of 1200 degrees Celsius to 700 degrees Celsius in 2.5 hours. Then, slowly cool down for about 15 hours to about 150 degrees Celsius, and then remove it from the kiln.

[0015] During the oxidative decomposition stage, the carbonates in the green body decompose, primarily calcium carbonate and magnesium carbonate, into calcium oxide, magnesium oxide, and carbon dioxide gas: CaCO3 = CaO + CO2, MaCO3 = MaO + CO2. This decomposition is faster and more complete under an oxidizing atmosphere. After decomposition, the green body begins to shrink, and its volume decreases. The high-temperature holding stage is a firing process required for the vitrification of the body. The highest temperature and the high-temperature holding time can ensure that the body's ignition loss (IGLOSS) is completed, the ceramic vitrification is completed, and the fired ceramic body reaches the required strength and water absorption rate, and the chemical reaction is complete.

[0016] The rapid cooling stage is the high-temperature cooling stage of the ceramic cooling zone. Because ceramics can be rapidly cooled by rapid cooling air, on the one hand, the rapid cooling of the ceramic body can increase its strength, and on the other hand, the glaze surface can avoid crystallization after rapid cooling treatment.

[0017] After the sintering process of the earthenware, the crystalline phase composition of the porcelain body consists of a glassy phase, a mullite phase, and free quartz. The glassy phase acts as a melting agent, reducing water absorption. Mullite, mainly composed of silicon dioxide and aluminum oxide, provides resistance to rapid heating and cooling; free quartz provides strength. During the sintering process of the glaze, the water absorption rate approaches zero after reaching 1150 degrees Celsius, preventing leakage. The secondary glaze formed by the fused mass is a self-cleaning glaze, an ultra-smooth glaze with a microscopic flatness below 1μm, entering the nanoscale range. It is a hydrophilic glaze, making it easy to clean and less prone to dust accumulation. like Figure 2 The diagram shows a comparison between the surface of the sample prepared by the hydrophilic self-cleaning glazed wine jar preparation method of the present invention and the glaze surface state when water droplets are added to the previous glaze. Figure 2 The sample above is obtained using the present invention. Under the hydrophilic glaze, water droplets spread quickly, which facilitates the flow of water droplets and carries away surface dirt, making it easy to clean. On the other hand, the hydrophobic glaze on top makes the water droplets three-dimensional and easier to roll off, making it less likely to carry away dirt. Specific Implementation

[0018] Step 1. Prepare the frit raw materials: potassium feldspar content 10%, sodium feldspar content 7%, mullite 80%, zinc oxide 2%, and strontium carbonate 0.51%; Step 2. Sinter the frit material at 1600-1700 degrees Celsius to form frit for later use.

[0019] Step 3. Grind the frit using a ball mill until it produces particles smaller than 200 mesh, and adjust the glaze slurry properties by adding 3 kg of sodium methyl cellulose and 6 kg of sodium tripolyphosphate per ton. Step 4. Make the clay jar blank, spray the clay glaze normally, the thickness of the clay glaze is 0.5mm, and spray the glaze material prepared in step 2 onto the surface of the clay glaze of the clay jar, the spray thickness is 0.1-0.2 mm. Then send the sprayed clay jar blank into the kiln for sintering. First, preheat from room temperature to 850 degrees for 16 hours; then raise the temperature to 1100 degrees for 8 hours to enter the oxidation decomposition stage; after reaching 1100 degrees, enter the high temperature holding stage for 60 minutes. Then, within 2 hours, the temperature was rapidly reduced to 690 degrees Celsius by introducing cold air; After another 16 hours, the temperature is lowered to 140 degrees Celsius before the product is removed from the kiln.

[0020] The method for preparing hydrophilic self-cleaning glazed wine jars described in this invention improves the glaze firing materials and processes, reducing the microscopic flatness of the glaze surface to 1 micrometer, thus significantly improving the glaze surface flatness. The resulting self-cleaning glaze surface is less prone to dust accumulation, making it less likely for dust to remain on the glaze surface during handling or other movements. Even if a small amount remains, it can be easily and quickly removed by blowing air or spraying water, improving the cleaning efficiency of the jars.

[0021] The foregoing descriptions are preferred embodiments of the present invention. Unless there is a clear contradiction between the preferred embodiments or a prerequisite for a particular preferred embodiment, the preferred embodiments can be arbitrarily combined and used. The embodiments and specific parameters described are only for clearly illustrating the inventor's invention verification process and are not intended to limit the scope of patent protection of the present invention. The scope of patent protection of the present invention shall still be determined by its claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A method for preparing a hydrophilic self-cleaning glazed wine jar, characterized in that... It includes the following steps: Step 1. Prepare the frit raw materials, in which potassium feldspar content is 10-15%, sodium feldspar content is 6-10%, mullite content is 70-80%, zinc oxide content is 1-3%, and strontium carbonate content is 0.5-3%; Step 2. Sinter the frit material at 1600-1700 degrees Celsius to form a frit; Step 3. Grind the frit into particles with a particle size of less than 200 mesh, and add methylcellulose and water-reducing agent to adjust the glaze properties; Step 4. Make the clay jar blank, spray the clay glaze normally, the thickness of the clay glaze is 0.48-0.52mm, spray the glaze material prepared in step 3 onto the surface of the clay glaze of the clay jar, the spray thickness is 0.1-0.2mm, and then send the sprayed clay jar blank into the kiln for sintering, the sintering temperature is 1150-1220 degrees Celsius.

2. The method for preparing a hydrophilic self-cleaning glazed wine jar as described in claim 1, characterized in that, In step 3, after grinding, sodium methyl cellulose is added to the cellulose at a ratio of 1-5 kg ​​per ton of raw material; and a water-reducing agent is added at a ratio of 3-8 kg per ton of raw material.

3. The method for preparing a hydrophilic self-cleaning glazed wine jar as described in claim 1, characterized in that, The sintering process in step 4 specifically includes the following stages: Preheating stage: First, preheat from room temperature to 850 degrees Celsius, which takes 12-16 hours; Heating stage: The temperature is then raised to 1100 degrees Celsius to enter the oxidation and decomposition stage, which takes 4-8 hours. Insulation stage: After reaching 1100 degrees Celsius, it enters the high-temperature insulation stage. 45-90 minutes; Rapid cooling phase: The temperature is rapidly reduced from the highest temperature to 670-720 degrees Celsius, taking 2-3 hours; Slow cooling section: slow cooling for 12-16 hours, until the temperature drops below 160 degrees Celsius, then the product is removed from the kiln.

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