Domestic porcelain bubble antibacterial glaze and preparation method thereof
By introducing components such as calcium sulfate into the glaze to generate wrapped bubbles, the problem of limited antibacterial effects of existing antibacterial glaze under insufficient light conditions is solved, and the efficient antibacterial effect of glaze under different light conditions is achieved.
Patent Information
- Application Number
- CN202311105927.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-30
- Publication Date
- 2025-02-28
AI Technical Summary
The existing antibacterial glaze is limited in the condition of insufficient light, and it is difficult to effectively function in various environments.
By adding calcium sulfate to the glaze and interacting with other components, wrapping bubbles are generated, enhancing the refractive and reflective capabilities of the glaze, thereby rapidly stimulating the antibacterial properties of thorium-232 and potassium-40 under different light conditions.
It improves the antibacterial ability of the glaze, so that it can effectively inhibit bacterial growth under insufficient light conditions, and enhances the overall antibacterial performance of the glaze.
Smart Images
Figure CN119528607A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of antibacterial glazes, and in particular relates to a daily-use porcelain bubble antibacterial glaze and a preparation method thereof. Background Art
[0002] Glaze is a colorless or colored glassy thin layer covering the surface of ceramic products. It is made by mixing raw materials such as feldspar, quartz, talc, kaolin and water in a certain proportion, grinding them into glaze slurry, applying them to the surface of the green body, and calcining them at a certain temperature. It can increase the mechanical strength, thermal stability and dielectric strength of the products, and also beautify the objects, facilitate wiping, and prevent corrosion by dust and filth. It can improve the quality of ceramic products and facilitate people's lives. Glaze with bactericidal and antibacterial functions is called antibacterial glaze.
[0003] In order to make the glaze have bactericidal and antibacterial functions, current antibacterial glazes can be divided into two categories. One is to coat a layer of metal oxide or other antibacterial solution on the ceramic glaze surface to make an antibacterial glaze; the other is to add glaze antibacterial agents to the ordinary ceramic glaze formula to make antibacterial glaze. The added antibacterial agent can be a photocatalytic glaze antibacterial agent, such as mineral raw materials containing potassium-40 or thorium-232, but this antibacterial agent needs to be under good light conditions to effectively exert its antibacterial effect, so it is subject to certain restrictions in application.
[0004] In order to reduce the application limitations of antibacterial glazes containing potassium-40 or thorium-232 so that the antibacterial effect of the glaze can still be effectively stimulated under conditions of insufficient light, it has become an urgent problem to be solved. Summary of the invention
[0005] The purpose of the present invention is to provide a daily-use porcelain bubble antibacterial glaze, which generates encapsulated bubbles through the interaction of calcium sulfate and other components, improves the refractive and reflective capabilities of the glaze, thereby more quickly stimulating the antibacterial properties of thorium-232 and potassium-40, and improving the overall antibacterial ability of the glaze.
[0006] In order to achieve the above purpose, the following technical solutions are adopted: A daily-use porcelain bubble antibacterial glaze comprises, by weight, 15-30 parts of quartz, 30-50 parts of potassium feldspar, 1-4 parts of calcium sulfate, 1-3 parts of zircon sand, 5-7 parts of zinc oxide, 3-7 parts of kaolin, 5-8 parts of citrine, and 15-20 parts of calcium carbonate. The zircon sand contains potassium-40, and the citrine contains thorium-232.
[0007] By adopting the above technical scheme, when making daily-use porcelain bubble antibacterial glaze, the quartz and citrine in the formula form a glass phase at high temperature, and at the same time calcium sulfate decomposes to produce gas, forming bubbles in the glass phase, so that the glass phase wraps a certain amount of bubbles, and these wrapped bubbles enhance the overall refractive and reflective capabilities of the glaze. When natural light shines on the glass phase wrapping the glaze bubbles, it is easier to refract and reflect. The refracted and reflected light produces a more intense photosensitization effect with the thorium-232 in the citrine and the potassium-40 in the zircon sand, and the thorium-232 and potassium-40 are more quickly stimulated to produce antibacterial properties, thereby enhancing the overall antibacterial ability of the glaze made by the formula.
[0008] Furthermore, in parts by weight: 25 parts of quartz, 40 parts of potassium feldspar, 2 parts of calcium sulfate, 2 parts of zircon sand, 5 parts of zinc oxide, 3 parts of kaolin, 7 parts of citrine, and 18 parts of calcium carbonate.
[0009] By adopting the above technical solution and setting the formula to the above ratio, the glaze obtained has a better antibacterial effect.
[0010] Another object of the present invention is to provide a method for preparing a daily-use porcelain bubble antibacterial glaze, comprising the following steps: S1. Weigh and mix quartz, potassium feldspar, calcium sulfate, zircon sand, zinc oxide, kaolin and citrine according to proportion to obtain a mixture; S2, weighing part of the mixed material and adding water to make the water-to-material ratio 1:1, and then ball milling until the particles below 50 microns are more than 99.95%, to obtain a ball milled material; S3, filtering and removing iron from the ball mill to obtain a primary glaze slurry, wherein the mass of water in the obtained primary glaze slurry accounts for 35-40%; S4, standing and evaporating until the mass of water in the primary glaze slurry is less than 5%, thereby obtaining a second glaze slurry; S5, brushing the second glaze slurry on the ceramic body, putting it into the kiln for firing and controlling the temperature to be 1270-1330° C., and finally obtaining the daily-use porcelain bubble antibacterial glaze.
[0011] By adopting the above technical scheme, a method for preparing daily-use porcelain bubble antibacterial glaze is described in detail. The glaze obtained by this method has high overall quality and is suitable for use in the field of sanitary ceramics.
[0012] Compared with the prior art, the beneficial effects of the present invention are: by adjusting the components and proportions of the glaze, the refractive and reflective capabilities are enhanced by utilizing the encapsulated bubbles formed by the interaction between calcium sulfate, citrine and quartz, so that thorium-232 and potassium-40 can be more quickly stimulated to have antibacterial properties, thereby enabling the glaze to produce better antibacterial effects when in use. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is the antibacterial effect diagram of Example 1; Figure 2 This is the antibacterial effect diagram of Example 2; Figure 3 This is the antibacterial effect diagram of Example 3; Figure 4 This is the antibacterial effect diagram of Comparative Example 1; Figure 5 This is the antibacterial effect diagram of Comparative Example 2; Figure 6 This is the antibacterial effect diagram of comparative example 3; Figure 7 This is the antibacterial effect diagram of Comparative Example 4; Figure 8 This is the antibacterial effect diagram of Comparative Example 5. DETAILED DESCRIPTION
[0014] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Unless otherwise specified, the raw materials and equipment selected by the present invention are all commercially available. Embodiment 1
[0015] A daily-use porcelain bubble antibacterial glaze is prepared according to the following steps: The first step is to weigh 15 kg of quartz, 30 kg of potassium feldspar, 1 kg of calcium sulfate, 1 kg of zircon sand, 5 kg of zinc oxide, 3 kg of kaolin, 5 kg of citrine, and 15 kg of calcium carbonate to obtain a mixture.
[0016] In the second step, 50 kg of the mixture is weighed, and then 50 kg of water and 1 kg of sodium carboxymethyl cellulose are added, and ball milling is performed until the particles below 50 microns account for more than 99.95%, thereby obtaining a ball milled material.
[0017] In the third step, the ball mill is filtered and iron removed to obtain a primary glaze slurry, in which the mass of water accounts for just 35-40%.
[0018] The fourth step is to stand for 12 hours to allow the water in the initial glaze slurry to evaporate until the mass of water in the initial glaze slurry is less than 5%, thereby obtaining the second glaze slurry.
[0019] The fifth step is to use the ceramic body as a carrier to show the glaze color or performance, and to apply the second glaze slurry on the ceramic body with a glaze thickness of 0.1~0.2mm. The ceramic body is put into the kiln for firing and the temperature is controlled at 1270~1330℃ to obtain the daily-use porcelain bubble antibacterial glaze.
[0020] The ceramics carrying the daily-use porcelain bubble antibacterial glaze were subjected to antibacterial testing. The antibacterial effect obtained after 120 hours of antibacterial testing is shown in the figure below. Figure 1 shown. Embodiment 2
[0021] A daily-use porcelain bubble antibacterial glaze is prepared according to the following steps: The first step is to weigh 15 kg of quartz, 30 kg of potassium feldspar, 1 kg of calcium sulfate, 1 kg of zircon sand, 5 kg of zinc oxide, 3 kg of kaolin, 5 kg of citrine, and 15 kg of calcium carbonate to obtain a mixture.
[0022] In the second step, 50 kg of the mixture is weighed, and then 50 kg of water and 1 kg of sodium carboxymethyl cellulose are added, and ball milling is performed until the particles below 50 microns account for more than 99.95%, thereby obtaining a ball milled material.
[0023] In the third step, the ball mill is filtered and iron removed to obtain a primary glaze slurry, in which the mass of water accounts for just 35-40%.
[0024] The fourth step is to stand for 12 hours to allow the water in the initial glaze slurry to evaporate until the mass of water in the initial glaze slurry is less than 5%, thereby obtaining the second glaze slurry.
[0025] The fifth step is to use the ceramic body as a carrier to show the glaze color or performance, and to apply the second glaze slurry on the ceramic body with a glaze thickness of 0.1~0.2mm. The ceramic body is put into the kiln for firing and the temperature is controlled at 1270~1330℃ to obtain the daily-use porcelain bubble antibacterial glaze.
[0026] The ceramic body carrying the daily-use porcelain bubble antibacterial glaze was subjected to an antibacterial test. The antibacterial effect obtained after 120 hours of antibacterial test is shown in the figure below. Figure 2 shown. Embodiment 3
[0027] A daily-use porcelain bubble antibacterial glaze is prepared according to the following steps: The first step is to weigh 25 kg of quartz, 40 kg of potassium feldspar, 2 kg of calcium sulfate, 2 kg of zircon sand, 5 kg of zinc oxide, 3 kg of kaolin, 7 kg of citrine, and 18 kg of calcium carbonate to obtain a mixture.
[0028] In the second step, 50 kg of the mixture is weighed, and then 50 kg of water and 1 kg of sodium carboxymethyl cellulose are added, and ball milling is performed until the particles below 50 microns account for more than 99.95%, thereby obtaining a ball milled material.
[0029] In the third step, the ball mill is filtered and iron removed to obtain a primary glaze slurry, in which the mass of water accounts for just 35-40%.
[0030] The fourth step is to stand for 12 hours to allow the water in the initial glaze slurry to evaporate until the mass of water in the initial glaze slurry is less than 5%, thereby obtaining the second glaze slurry.
[0031] The fifth step is to use the ceramic body as a carrier to show the glaze color or performance, and to apply the second glaze slurry on the ceramic body with a glaze thickness of 0.1~0.2mm. The ceramic body is put into the kiln for firing and the temperature is controlled at 1270~1330℃ to obtain the daily-use porcelain bubble antibacterial glaze.
[0032] The ceramic body carrying the daily-use porcelain bubble antibacterial glaze was subjected to an antibacterial test. The antibacterial effect obtained after 120 hours of antibacterial test is shown in the figure below. Figure 3 shown.
[0033] Comparative Example 1: Compared with Example 2, no citrine was added in Comparative Example 1.
[0034] Comparative Example 2: Compared with Example 2, no calcium sulfate was added in Comparative Example 2.
[0035] Comparative Example 3: Compared with Example 2, no zircon sand was added in Comparative Example 3.
[0036] Comparative Example 4: Compared with Example 2, no quartz and citrine were added in Comparative Example 4.
[0037] Comparative Example 5: Compared with Example 2, no zircon sand and citrine were added in Comparative Example 5.
[0038] The antibacterial properties of Examples 1 to 3 and Comparative Examples 1 to 5 were tested, and the results shown in Table 1 were obtained. Table 1 Antibacterial performance test results Antibacterial performance test method: Put 5g of white organic protein nutrient solution and 3g of water into a glazed and fired ceramic container, store it in the same environment and under the same light, and observe the time when colonies appear or the nutrient solution deteriorates. By comparing Example 2 with Comparative Examples 1 to 5, it can be seen that when quartz, citrine, calcium sulfate and zircon sand cooperate with each other in a certain proportion, the ceramics made of daily-use porcelain bubble antibacterial glaze have a later colony appearance time and a better antibacterial effect under the same light. By comparing Example 1 to Example 3, it is found that when the components are in the proportion of Example 3, the antibacterial effect is relatively better.
[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A daily-use porcelain bubble antibacterial glaze, characterized in that: Calculated by weight: comprising 15-30 parts of quartz, 30-50 parts of potassium feldspar, 1-4 parts of calcium sulfate, 1-3 parts of zircon sand, 5-7 parts of zinc oxide, 3-7 parts of kaolin, 5-8 parts of citrine, and 15-20 parts of calcium carbonate. The zircon sand contains potassium-40, and the citrine contains thorium-232.
2. The daily-use porcelain bubble antibacterial glaze according to claim 1, characterized in that: In parts by weight: 25 parts of quartz, 40 parts of potassium feldspar, 2 parts of calcium sulfate, 2 parts of zircon sand, 5 parts of zinc oxide, 3 parts of kaolin, 7 parts of citrine, and 18 parts of calcium carbonate.
3. A method for preparing a daily-use porcelain bubble antibacterial glaze as claimed in claim 1, characterized in that: The steps include: S1. Weigh and mix quartz, potassium feldspar, calcium sulfate, zircon sand, zinc oxide, kaolin and citrine according to proportion to obtain a mixture; S2, weighing part of the mixed material and adding water to make the water-to-material ratio 1:1, and then ball milling until the particles below 50 microns are more than 99.95%, to obtain a ball milled material; S3, filtering and removing iron from the ball mill to obtain a primary glaze slurry, wherein the mass of water in the obtained primary glaze slurry accounts for 35-40%; S4, standing and evaporating until the mass of water in the primary glaze slurry is less than 5%, thereby obtaining a second glaze slurry; S5, brushing the second glaze slurry on the ceramic body, putting it into the kiln for firing and controlling the temperature to be 1270-1330° C., and finally obtaining the daily-use porcelain bubble antibacterial glaze.