Antibacterial and antiviral ceramic glaze and method for preparing ceramic product

Abstract

The invention discloses an antibacterial and antiviral ceramic glaze and a method for preparing a ceramic product, and belongs to the technical field of ceramics. The antibacterial and antiviral ceramic glaze comprises the following components: silicon oxide, aluminum oxide, iron oxide, magnesium oxide, potassium oxide, sodium oxide, titanium oxide, manganese oxide, phosphorus pentoxide, sulfur trioxide, barium oxide, zinc oxide, cobaltosic oxide, nickel oxide, chromium sesquioxide and lithium oxide. The prepared antibacterial and antiviral ceramic product has excellent antibacterial and antiviral performance and excellent glaze strength.

Description

Technical Field

[0001] The invention belongs to the technical field of ceramics, and in particular relates to an antibacterial and antiviral ceramic glaze and a method for preparing a ceramic product. Background Art

[0002] Nowadays, we often see news about influenza and epidemic viruses. Therefore, hygiene issues have always been a problem. How to avoid and reduce the infection of these colds and viruses has become an issue that people are paying more and more attention to.

[0003] Ceramic products, whether in daily necessities or handicrafts, have become indispensable products in daily life, especially tableware, tea sets and other ceramic products that come into contact with food. Therefore, how to improve the antibacterial and antiviral properties of these ceramic products is a top priority for ceramic companies in developing new product technologies.

[0004] The Chinese public patent application document with application number 202310405530.3 discloses an antibacterial and antiviral low-temperature glaze and its preparation method, antibacterial and antiviral ceramic ware and its preparation method, which uses antibacterial and antiviral materials composed of carbon nitride, graphene and titanium dioxide to achieve its performance, and after applying high-temperature glaze on the inner surface of the ceramic blank, sintering at 1000~1300℃ for 5~8 hours, cooling, applying antibacterial and antiviral low-temperature glaze on the outer surface of the ceramic, and then sintering at 600~780℃ for 5~8 hours. Such high temperature, cooling, and long-term sintering at low temperature takes a long time to make and the process is complicated, which cannot meet the actual needs of ceramic companies.

[0005] Therefore, it is necessary to develop an antibacterial and antiviral ceramic glaze with controllable operation process and quality, and a method for preparing ceramic products. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an antibacterial and antiviral ceramic glaze with controllable operation process and quality, and a method for preparing a ceramic product.

[0007] The present invention adopts the following technical solution: The antibacterial and antiviral ceramic glaze includes the following components in parts by mass: 59.95-62.36 parts of silicon oxide, 16.95-18.26 parts of aluminum oxide, 2.64-3.89 parts of iron oxide, 3.35-4.02 parts of magnesium oxide, 1.74-1.90 parts of potassium oxide, 0.71-0.93 parts of sodium oxide, 0.03-0.04 parts of titanium oxide, 0.04-0.05 parts of manganese oxide, 0.02-0.03 parts of phosphorus pentoxide, 0-0.01 parts of sulfur trioxide, 0.05-0.07 parts of barium oxide, 0.03-0.04 parts of zinc oxide, 0.96-1.03 parts of cobalt tetroxide, 0.94-1.12 parts of nickel oxide, 4.50-4.80 parts of chromium trioxide, and 16.38-20.48 parts of lithium oxide.

[0008] A method for preparing a ceramic product, using the antibacterial and antiviral ceramic glaze, comprises the following steps: Step 1: Crushing: Mix and crush all the components according to the mass fractions to obtain a crushed material; Step 2: Ball milling: Ball-milling the crushed material obtained in step 1 to obtain a ball-milled material; Step 3: Prepare glaze: Add water to the ball mill obtained in step 2 to prepare glaze water, wherein the Baume degree of the glaze water is 46-48; Step 4: Glazing: Applying the glaze water in step 3 to the ceramic body, and drying it to obtain a ceramic product to be fired; Step 5: Firing: The ceramic product to be fired obtained in step 4 is fired, and after cooling, the antibacterial and antiviral ceramic product is obtained.

[0009] Furthermore, the ceramic body comprises the following components in parts by mass: 66-73 parts of kaolin, 30-35 parts of quartz, 10-13 parts of potassium feldspar, 10-13 parts of sodium feldspar, 18-20 parts of spodumene, and 12-13 parts of bentonite.

[0010] Furthermore, during the ball milling in step 2, the ball milling is performed according to a mass ratio of crushed material: ball = 1:1, the ball milling time is 12-16 hours, and the rotation speed of the ball mill is 500-600 r / min.

[0011] Furthermore, the drying temperature in step 4 is 60-70° C., and the drying time is 12-24 hours.

[0012] Furthermore, the firing curve of the firing in step 5 is: The first stage: the room temperature is uniformly heated to 300°C, which takes 1.3~1.5h; The second stage: uniformly increase the temperature from 300℃ to 700℃, which takes 1.8~2h; The third stage: uniformly heating from 700℃ to 1000℃, taking 1.8~2h; The fourth stage: uniformly increase the temperature from 1000℃ to 1270℃, which takes 1.8~2h, and then keep the temperature constant for 20~40min.

[0013] Compared with the prior art, the present invention has the following beneficial effects: First, since bacteria have nuclei and most viruses have proteins, one of the main characteristics of proteins is that they have a layer of sulfide protein membrane on the outside. Instead of using raw materials such as negative ion ceramic powder, which is widely used in traditional antibacterial drugs but carries radiation, the activity of metallic lithium is used to react with the protein membrane to achieve the antiviral purpose.

[0014] Second, at the same time, the multi-stage firing method is used to reduce the generation of glaze pinholes and effectively improve the glaze strength. DETAILED DESCRIPTION

[0015] The raw materials used in the present invention are all commercially available products. Example 1

[0016] The antibacterial and antiviral ceramic glaze includes the following components in parts by mass: 59.95 parts of silicon oxide, 16.95 parts of aluminum oxide, 2.64 parts of iron oxide, 3.35 parts of magnesium oxide, 1.74 parts of potassium oxide, 0.71 parts of sodium oxide, 0.03 parts of titanium oxide, 0.04 parts of manganese oxide, 0.02 parts of phosphorus pentoxide, 0.01 parts of sulfur trioxide, 0.05 parts of barium oxide, 0.03 parts of zinc oxide, 0.96 parts of cobalt tetroxide, 0.94 parts of nickel oxide, 4.50 parts of chromium trioxide, and 16.38 parts of lithium oxide.

[0017] The method for preparing ceramic products using antibacterial and antiviral ceramic glaze comprises the following steps: Step 1: Crushing: Mix and crush all the components according to the mass fractions to obtain a crushed material; Step 2: Ball milling: The crushed material obtained in step 1 is ball-milled at a mass ratio of crushed material to ball = 1:1, the ball-milling time is 12 h, the speed of the ball-milling is 500 r / min, and a ball-milled material is obtained; Step 3: Prepare glaze: The ball mill obtained in step 2 is added with water to prepare glaze water, wherein the Baume degree of the glaze water is 46; Step 4: Glazing: Apply the glaze water in step 3 to the ceramic body, and dry it at a temperature of 60° C. for 12 hours to obtain a ceramic product to be fired; Step 5: Firing: The ceramic product to be fired obtained in step 4 is fired, and after cooling, the antibacterial and antiviral ceramic product is obtained. The specific firing curve is: The first stage: the room temperature is uniformly heated to 300°C, which takes 1.5 hours; The second stage: the temperature is raised uniformly from 300℃ to 700℃, which takes 2h; The third stage: uniformly increase the temperature from 700℃ to 1000℃, which takes 2h; The fourth stage: uniformly increase the temperature from 1000℃ to 1270℃ for 2h, and then keep the temperature constant for 20min.

[0018] The ceramic body in step 4 includes the following components by weight: 66 parts of kaolin, 30 parts of quartz, 10 parts of potassium feldspar, 10 parts of sodium feldspar, 18 parts of spodumene, and 12 parts of bentonite.

[0019] The preparation method of the ceramic body is the existing technology in this technical field, and also adopts the processes of crushing, ball milling, mud kneading, aging, molding, etc., and the required ceramic body shape is made according to the actual production situation. Example 2

[0020] The antibacterial and antiviral ceramic glaze includes the following components in parts by mass: 62.36 parts of silicon oxide, 18.26 parts of aluminum oxide, 3.89 parts of iron oxide, 4.02 parts of magnesium oxide, 1.90 parts of potassium oxide, 0.93 parts of sodium oxide, 0.04 parts of titanium oxide, 0.05 parts of manganese oxide, 0.03 parts of phosphorus pentoxide, 0.07 parts of barium oxide, 0.04 parts of zinc oxide, 1.03 parts of cobalt tetroxide, 1.12 parts of nickel oxide, 4.80 parts of chromium oxide, and 20.48 parts of lithium oxide.

[0021] The method for preparing ceramic products using antibacterial and antiviral ceramic glaze comprises the following steps: Step 1: Crushing: Mix and crush all the components according to the mass fractions to obtain a crushed material; Step 2: Ball milling: The crushed material obtained in step 1 is ball-milled at a mass ratio of crushed material to ball = 1:1, the ball-milling time is 16 h, the speed of the ball-milling is 600 r / min, and a ball-milled material is obtained; Step 3: Prepare glaze: The ball mill obtained in step 2 is added with water to prepare glaze water, wherein the Baume degree of the glaze water is 48; Step 4: Glazing: Apply the glaze water in step 3 to the ceramic body, and dry it at a temperature of 70° C. for 24 hours to obtain a ceramic product to be fired; Step 5: Firing: The ceramic product to be fired obtained in step 4 is fired, and after cooling, the antibacterial and antiviral ceramic product is obtained. The specific firing curve is: The first stage: the room temperature is uniformly heated to 300°C, which takes 1.3 hours; The second stage: the temperature is raised uniformly from 300℃ to 700℃, which takes 1.8h; The third stage: the temperature is raised uniformly from 700℃ to 1000℃, which takes 1.8h; The fourth stage: uniformly increase the temperature from 1000℃ to 1270℃, which takes 1.8h, and then keep the temperature constant for 20min.

[0022] The ceramic body in step 4 includes the following components by weight: 73 parts of kaolin, 35 parts of quartz, 13 parts of potassium feldspar, 13 parts of sodium feldspar, 20 parts of spodumene, and 13 parts of bentonite.

[0023] The preparation method of the ceramic body is the existing technology in this technical field, and also adopts the processes of crushing, ball milling, mud kneading, aging, molding, etc., and the required ceramic body shape is made according to the actual production situation. Example 3

[0024] The antibacterial and antiviral ceramic glaze includes the following components in parts by mass: 61.25 parts of silicon oxide, 17.24 parts of aluminum oxide, 3.17 parts of iron oxide, 3.84 parts of magnesium oxide, 1.82 parts of potassium oxide, 0.89 parts of sodium oxide, 0.04 parts of titanium oxide, 0.05 parts of manganese oxide, 0.03 parts of phosphorus pentoxide, 0.01 parts of sulfur trioxide, 0.06 parts of barium oxide, 0.03 parts of zinc oxide, 0.98 parts of cobalt tetroxide, 0.99 parts of nickel oxide, 4.67 parts of chromium trioxide, and 18.36 parts of lithium oxide.

[0025] The method for preparing ceramic products using antibacterial and antiviral ceramic glaze comprises the following steps: Step 1: Crushing: Mix and crush all the components according to the mass fractions to obtain a crushed material; Step 2: Ball milling: The crushed material obtained in step 1 is ball-milled at a mass ratio of crushed material to ball = 1:1, the ball-milling time is 14 h, the speed of the ball-milling is 550 r / min, and a ball-milled material is obtained; Step 3: Prepare glaze: The ball mill obtained in step 2 is added with water to prepare glaze water, wherein the Baume degree of the glaze water is 47; Step 4: Glazing: Apply the glaze water in step 3 to the ceramic body, and dry it at a temperature of 65° C. for 16 hours to obtain a ceramic product to be fired; Step 5: Firing: The ceramic product to be fired obtained in step 4 is fired, and after cooling, the antibacterial and antiviral ceramic product is obtained. The specific firing curve is: The first stage: the room temperature is uniformly heated to 300°C, which takes 1.4 hours; The second stage: the temperature is raised uniformly from 300℃ to 700℃, which takes 1.9h; The third stage: the temperature is raised uniformly from 700℃ to 1000℃, which takes 1.9h; The fourth stage: the temperature was raised uniformly from 1000°C to 1270°C in 1.9 hours, and then kept constant for 30 minutes.

[0026] The ceramic body in step 4 includes the following components by weight: 68 parts of kaolin, 32 parts of quartz, 11 parts of potassium feldspar, 12 parts of albite, 19 parts of spodumene, and 12 parts of bentonite.

[0027] The preparation method of the ceramic body is the existing technology in this technical field, and also adopts the processes of crushing, ball milling, mud kneading, aging, molding, etc., and the required ceramic body shape is made according to the actual production situation. Comparison Example

[0028] The antibacterial and antiviral ceramic glaze includes the following components in parts by mass: 61.25 parts of silicon oxide, 17.24 parts of aluminum oxide, 3.17 parts of iron oxide, 3.84 parts of magnesium oxide, 1.82 parts of potassium oxide, 0.89 parts of sodium oxide, 0.04 parts of titanium oxide, 0.05 parts of manganese oxide, 0.03 parts of phosphorus pentoxide, 0.01 parts of sulfur trioxide, 0.06 parts of barium oxide, 0.03 parts of zinc oxide, 0.98 parts of cobalt tetroxide, 0.99 parts of nickel oxide, 4.67 parts of chromium trioxide, and 11.07 parts of lithium oxide.

[0029] The method for preparing ceramic products using antibacterial and antiviral ceramic glaze comprises the following steps: Step 1: Crushing: Mix and crush all the components according to the mass fractions to obtain a crushed material; Step 2: Ball milling: The crushed material obtained in step 1 is ball-milled at a mass ratio of crushed material to ball = 1:1, the ball-milling time is 14 h, the speed of the ball-milling is 550 r / min, and a ball-milled material is obtained; Step 3: Prepare glaze: The ball mill obtained in step 2 is added with water to prepare glaze water, wherein the Baume degree of the glaze water is 47; Step 4: Glazing: Apply the glaze water in step 3 to the ceramic body, and dry it at a temperature of 65° C. for 16 hours to obtain a ceramic product to be fired; Step 5: Firing: The ceramic product to be fired obtained in step 4 is fired by uniformly heating from room temperature to 1270° C. and maintaining the temperature for 30 minutes. After cooling, the antibacterial and antiviral ceramic product is obtained.

[0030] The ceramic body in step 4 includes the following components by weight: 68 parts of kaolin, 32 parts of quartz, 11 parts of potassium feldspar, 12 parts of albite, 19 parts of spodumene, and 12 parts of bentonite.

[0031] The preparation method of the ceramic body is the existing technology in this technical field, and also adopts the processes of crushing, ball milling, mud kneading, aging, molding, etc., and the required ceramic body shape is made according to the actual production situation.

[0032] The antibacterial and antiviral ceramic products prepared in the above three embodiments and the control example were tested according to ISO21702:2019. The results are as follows:

[0033] Among them: in the test of antibacterial rate of Escherichia coli and antibacterial rate of Staphylococcus aureus, Examples 1 to 3 all reached more than 99.99%, the antiviral activity value all reached 2.0, and the antiviral activity rate all reached 99.1%, while the result data of the control test were worse than the results of Examples 1 to 3, and the data are not listed here. It can be seen that the antibacterial and antiviral ceramic products prepared in Examples 1 to 3 have better antibacterial and antiviral properties.

[0034] At the same time, the physical properties of Examples 1 to 3 and the control example were tested, as shown in the following table:

[0035] It can be seen that the staged firing method in Examples 1 to 3 is better than the one-stage firing method in the control example, and the physical properties of the antibacterial and antiviral ceramic products obtained are more excellent.

[0036] The above is a preferred embodiment of the present invention, and it should be noted that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. Antibacterial and antiviral ceramic glaze, characterized in that: It includes the following components in parts by mass: 59.95-62.36 parts of silicon oxide, 16.95-18.26 parts of aluminum oxide, 2.64-3.89 parts of iron oxide, 3.35-4.02 parts of magnesium oxide, 1.74-1.90 parts of potassium oxide, 0.71-0.93 parts of sodium oxide, 0.03-0.04 parts of titanium oxide, 0.04-0.05 parts of manganese oxide, 0.02-0.03 parts of phosphorus pentoxide, 0-0.01 parts of sulfur trioxide, 0.05-0.07 parts of barium oxide, 0.03-0.04 parts of zinc oxide, 0.96-1.03 parts of cobalt tetroxide, 0.94-1.12 parts of nickel oxide, 4.50-4.80 parts of chromium trioxide, and 16.38-20.48 parts of lithium oxide.

2. A method for preparing a ceramic product, using the antibacterial and antiviral ceramic glaze according to claim 1, characterized in that: The steps include: Step 1: Crushing: Mix and crush all the components according to the mass fractions to obtain a crushed material; Step 2: Ball milling: Ball-milling the crushed material obtained in step 1 to obtain a ball-milled material; Step 3: Prepare glaze: Add water to the ball mill obtained in step 2 to prepare glaze water, wherein the Baume degree of the glaze water is 46-48; Step 4: Glazing: Applying the glaze water in step 3 to the ceramic body, and drying it to obtain a ceramic product to be fired; Step 5: Firing: The ceramic product to be fired obtained in step 4 is fired, and after cooling, the antibacterial and antiviral ceramic product is obtained.

3. The method for preparing a ceramic product according to claim 2, characterized in that: The ceramic body comprises the following components by weight: 66-73 parts of kaolin, 30-35 parts of quartz, 10-13 parts of potassium feldspar, 10-13 parts of sodium feldspar, 18-20 parts of spodumene and 12-13 parts of bentonite.

4. The method for preparing a ceramic product according to claim 2, characterized in that: During the ball milling in step 2, the ball milling is performed according to a mass ratio of crushed material: ball = 1:1, the ball milling time is 12 to 16 hours, and the speed of the ball mill is 500 to 600 r / min.

5. The method for preparing a ceramic product according to claim 2, characterized in that: The drying temperature in step 4 is 60-70° C., and the drying time is 12-24 hours.

6. The method for preparing a ceramic product according to claim 2, characterized in that: The firing curve of the firing in step 5 is: The first stage: the room temperature is uniformly heated to 300°C, which takes 1.3~1.5h; The second stage: uniformly increase the temperature from 300℃ to 700℃, which takes 1.8~2h; The third stage: uniformly heating from 700℃ to 1000℃, taking 1.8~2h; The fourth stage: uniformly increase the temperature from 1000℃ to 1270℃, which takes 1.8~2h, and then keep the temperature constant for 20~40min.

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