阅读说明：本技术 一种具有抗菌功能的陶瓷制品及其制备方法 (Ceramic product with antibacterial function and preparation method thereof ) 是由 徐磊 何显祥 梁文轩 于 2021-01-22 设计创作，主要内容包括：本发明公开了一种具有抗菌功能的陶瓷制品及其制备方法,该陶瓷制品由上而下依次设置有抗菌层、釉料层和砖坯层,其中,抗菌层为聚合物银离子,本发明制备的具有抗菌功能的陶瓷制品通过设置粒径为2-5nm的聚合物银离子抗菌层实现良好的杀菌消毒性能,聚合物银离子络合体系稳定,烧制过程中抗菌层与釉面的紧密结合,制备方法简单,节约银离子抗菌剂用量的同时提升了抗菌效果,减少了生产成本,在使用过程中抗菌层不容易被蹭掉,实现长效、迅速、广谱的杀菌目的。(The invention discloses a ceramic product with an antibacterial function and a preparation method thereof, wherein the ceramic product is sequentially provided with an antibacterial layer, a glaze layer and a brick blank layer from top to bottom, wherein the antibacterial layer is polymer silver ions, the ceramic product with the antibacterial function realizes good sterilization and disinfection performance by arranging the polymer silver ion antibacterial layer with the particle size of 2-5nm, a polymer silver ion complexing system is stable, the antibacterial layer is tightly combined with the glaze layer in the firing process, the preparation method is simple, the antibacterial effect is improved while the using amount of a silver ion antibacterial agent is saved, the production cost is reduced, the antibacterial layer is not easy to rub off in the using process, and the aims of long-acting, rapid and broad-spectrum sterilization are realized.)

1. The ceramic product with the antibacterial function is characterized in that the ceramic product is sequentially provided with an antibacterial layer, a glaze layer and a brick blank layer from top to bottom, wherein the antibacterial layer is polymer silver ions.

2. The ceramic product according to claim 1, characterized in that the glaze layer consists of the following raw materials in parts by weight: 15-25 parts of high-purity potash feldspar, 10-20 parts of albite, 13-20 parts of zirconium silicate, 5-10 parts of kaolin, 10-15 parts of barium carbonate, 4-6 parts of calcined zinc oxide, 5-10 parts of apatite, 5-10 parts of calcined talc, 4-8 parts of alpha-alumina and 35.5-62 parts of water.

3. The ceramic article of claim 1 wherein the polymeric silver ions are a mixture of polymeric silver ions of hydroalcoholic alcohol and polymeric silver ions of aqueous organic alcohol in any ratio.

4. The ceramic article of claim 3 wherein said polymeric silver ion has a particle size of from 2 to 5 nm.

5. A method of making a ceramic article according to any one of claims 1 to 4, characterised in that it comprises the steps of:

(1) preparing glaze: grinding the high-purity potash feldspar, the albite, the zirconium silicate, the kaolin, the barium carbonate, the calcined zinc oxide, the apatite, the calcined talc, the alpha-alumina and the water in parts by weight for 6-8 hours to obtain a glaze material;

(2) glazing: uniformly applying the glaze prepared in the step (1) on the surface of a green brick to form a glaze layer to obtain a glazed green brick;

(3) and arranging an antibacterial layer: uniformly applying the polymer silver ions on the surface of the glazed green brick prepared in the step (2) by using an ink-jet printer to form the antibacterial layer, so as to obtain a porcelain to be baked;

(4) and firing and forming: and (4) sending the porcelain to be baked prepared in the step (3) into a kiln for burning and forming to obtain the ceramic product with the antibacterial function.

6. The method for manufacturing ceramic products according to claim 5, characterized in that the glaze particle size D99 produced in step (1) is 45 μm or less.

7. The method of manufacturing a ceramic article according to claim 5, characterized in that the weight ratio of the polymeric silver ions in step (3) to the glaze in step (1) is from 1:180 to 1: 360.

8. The method for preparing a ceramic article according to claim 5, wherein the polymer silver ion preparation solid content in the step (3) is 1000-8000 ppm.

9. The method of manufacturing a ceramic article according to claim 5, wherein the firing temperature in the step (4) is 1100 ℃ to 1250 ℃.

Technical Field

The invention relates to the technical field of ceramics, in particular to a ceramic product with an antibacterial function and a preparation method thereof.

Background

In recent years, people pay more and more attention to the importance of antibacterial disinfection, and therefore, a plurality of disinfection products are promoted, people improve health consciousness, realize the importance of antibacterial disinfection, the requirements of the nation on health and hygiene are continuously improved, the demand for ceramic products with antibacterial function is larger and larger, most of ceramic products with antibacterial function adopt the technical scheme of adding antibacterial agents into glaze, most of the antibacterial agents are not on the surfaces of the ceramic products, the antibacterial effect is poor, the other scheme is to cover an antibacterial layer on the surfaces of the ceramic products, the antibacterial layer is easy to wear in the daily use process, and the long-acting antibacterial performance cannot be achieved.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a ceramic product with an antibacterial function and a preparation method thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the ceramic product with the antibacterial function is sequentially provided with an antibacterial layer, a glaze layer and a brick blank layer from top to bottom, wherein the antibacterial layer is polymer silver ions.

The glaze layer is composed of the following raw materials in parts by weight: 15-25 parts of high-purity potash feldspar, 10-20 parts of albite, 13-20 parts of zirconium silicate, 5-10 parts of kaolin, 10-15 parts of barium carbonate, 4-6 parts of calcined zinc oxide, 5-10 parts of apatite, 5-10 parts of calcined talc, 4-8 parts of alpha-alumina and 35.5-62 parts of water.

Preferably, the polymer silver ions are a mixture of polymer silver ions of hydrogen alcohol and polymer silver ions of organic alcohol aqueous solution in any proportion.

Preferably, the polymer silver ion particle size is 2-5 nm.

A method for preparing the ceramic product comprises the following steps:

(1) preparing glaze: grinding the high-purity potash feldspar, the albite, the zirconium silicate, the kaolin, the barium carbonate, the calcined zinc oxide, the apatite, the calcined talc, the alpha-alumina and the water in parts by weight for 6-8 hours to obtain a glaze material;

(2) glazing: uniformly applying the glaze prepared in the step (1) on the surface of a green brick to form a glaze layer to obtain a glazed green brick;

(3) and arranging an antibacterial layer: uniformly applying the polymer silver ions on the surface of the glazed green brick prepared in the step (2) by using an ink-jet printer to form the antibacterial layer, so as to obtain the porcelain to be baked;

(4) and firing and forming: and (4) sending the porcelain to be baked prepared in the step (3) into a kiln for burning and forming to obtain the ceramic product with the antibacterial function.

Preferably, the granularity D99 of the glaze prepared in the step (1) is less than or equal to 45 mu m.

Preferably, the weight ratio of the polymer silver ions in the step (3) to the glaze in the step (1) is 1:180-1: 360.

Preferably, the polymer silver ion preparation in step (3) has a solids content of 1000-8000 ppm.

Preferably, the firing temperature in step (4) is 1100 ℃ to 1250 ℃.

The invention has the beneficial effects that: the ceramic product with the antibacterial function, which is prepared by the invention, realizes good sterilization and disinfection performance by arranging the polymer silver ion antibacterial layer with the particle size of 2-5nm, the polymer silver ion complexing system is stable, the antibacterial layer is tightly combined with the glaze surface in the firing process, the preparation method is simple, the antibacterial effect is improved while the using amount of the silver ion antibacterial agent is saved, the production cost is reduced, the antibacterial layer is not easily rubbed off in the using process, and the long-acting, quick and broad-spectrum sterilization purpose is realized.

Detailed Description

The following examples further illustrate the practice and advantages of the present invention, and should not be construed as limiting the scope of the invention.

The ceramic product with the antibacterial function is sequentially provided with an antibacterial layer, a glaze layer and a brick blank layer from top to bottom, wherein the antibacterial layer is polymer silver ions.

The glaze layer is composed of the following raw materials in parts by weight: 15-25 parts of high-purity potash feldspar, 10-20 parts of albite, 13-20 parts of zirconium silicate, 5-10 parts of kaolin, 10-15 parts of barium carbonate, 4-6 parts of calcined zinc oxide, 5-10 parts of apatite, 5-10 parts of calcined talc, 4-8 parts of alpha-alumina and 35.5-62 parts of water.

Preferably, the polymer silver ions are a mixture of polymer silver ions of hydrogen alcohol and polymer silver ions of organic alcohol aqueous solution in any proportion.

Preferably, the polymer silver ion particle size is 2-5nm, the antibacterial agent adopted by the invention has small particle size, the one-dimensional ionic chain alpha of the polymer silver ion is 2ln2 complex system is stable, the antibacterial property is stronger than that of the common colored monomer nano silver solution or ionic state nano silver solution, and the silver ion antibacterial agent has a rapid sterilization function, and also has good antiviral property, can effectively reduce the formation of extracellular virus DNA, and simultaneously inhibits RNA in cells; when the silver nano material with the grain diameter of 2-5nm is attached to the virus, the combination of the virus and host cells can be effectively prevented, the long-lasting broad-spectrum sterilization purpose is achieved, and various bacteria can be killed.

A method for preparing the ceramic product comprises the following steps:

(1) preparing glaze: grinding the high-purity potash feldspar, the albite, the zirconium silicate, the kaolin, the barium carbonate, the calcined zinc oxide, the apatite, the calcined talc, the alpha-alumina and the water in parts by weight for 6-8 hours to obtain a glaze material, preferably, the grinding step is carried out by adopting a ball mill;

(2) glazing: uniformly applying the glaze prepared in the step (1) on the surface of a green brick to form a glaze layer to obtain a glazed green brick;

(3) and arranging an antibacterial layer: uniformly applying the polymer silver ions on the surface of the glazed green brick prepared in the step (2) by using an ink-jet printer to form the antibacterial layer, so as to obtain the porcelain to be baked;

(4) and firing and forming: and (4) sending the porcelain to be baked prepared in the step (3) into a kiln for burning and forming to obtain the ceramic product with the antibacterial function.

The antibacterial layer prepared in the way is fixed on the glaze surface in the firing process, so that silver ions are stably fixed on the surface of the ceramic product, the antibacterial effect is improved while the addition amount of the silver ions is reduced, the cost is saved, the antibacterial layer is not easily abraded in the daily use process, the manufacturing steps are simple, and the ceramic product is not required to be fired and processed for many times.

Preferably, the granularity D99 of the glaze prepared in the step (1) is less than or equal to 45 mu m.

Preferably, the weight ratio of the polymer silver ions in the step (3) to the glaze material in the step a is 1:180-1:360, and the weight part of the polymer silver ions is about 0.3-1.0 part.

Preferably, the polymer silver ion preparation in step (3) has a solids content of 1000-8000 ppm.

Preferably, the firing temperature in step (4) is 1100 ℃ to 1250 ℃.

According to the actual production requirement, an antibacterial layer and a glaze layer can be arranged on the lateral surface and the bottom surface of the green brick layer, so that the ceramic product has comprehensive antibacterial performance.

In the present invention, the portions where the temperature and pressure are not particularly emphasized are both normal temperature and normal pressure.

For the ceramic product with the antibacterial function of the formula, the inventor designs and tests a plurality of examples and manufactures the ceramic product according to the method:

example 1: the ceramic product with the antibacterial function is provided with an antibacterial layer, a glaze layer and a brick layer from top to bottom in sequence, wherein the antibacterial layer is polymer silver ions.

The glaze layer is composed of the following raw materials in parts by weight: 15 parts of high-purity potash feldspar, 10 parts of albite, 13 parts of zirconium silicate, 5 parts of kaolin, 10 parts of barium carbonate, 4 parts of calcined zinc oxide, 5 parts of apatite, 5 parts of calcined talc, 4 parts of alpha-alumina and 35.5 parts of water.

The polymer silver ion is a mixture of a hydroalcoholic polymer silver ion and an organic alcohol aqueous solution polymer silver ion in a ratio of 1: 1.

The weight ratio of the polymer silver ions in the step (3) to the glaze in the step a is 1:186, and the firing temperature in the step (4) is 1160 ℃.

Example 2: the ceramic product with the antibacterial function is provided with an antibacterial layer, a glaze layer and a brick layer from top to bottom in sequence, wherein the antibacterial layer is polymer silver ions.

The glaze layer is composed of the following raw materials in parts by weight: 15 parts of high-purity potash feldspar, 10 parts of albite, 13 parts of zirconium silicate, 5 parts of kaolin, 10 parts of barium carbonate, 4 parts of calcined zinc oxide, 5 parts of apatite, 5 parts of calcined talc, 4 parts of alpha-alumina and 35.5 parts of water.

The polymer silver ion is a mixture of a hydroalcoholic polymer silver ion and an organic alcohol aqueous solution polymer silver ion in a ratio of 1: 1.

The weight ratio of the polymer silver ions in the step (3) to the glaze in the step a is 1:355, and the firing temperature in the step (4) is 1160 ℃. .

Example 1: the ceramic product with the antibacterial function is provided with an antibacterial layer, a glaze layer and a brick layer from top to bottom in sequence, wherein the antibacterial layer is polymer silver ions.

The glaze layer is composed of the following raw materials in parts by weight: 25 parts of high-purity potash feldspar, 20 parts of albite, 20 parts of zirconium silicate, 10 parts of kaolin, 15 parts of barium carbonate, 6 parts of calcined zinc oxide, 10 parts of apatite, 10 parts of calcined talc, 8 parts of alpha-alumina and 62 parts of water.

The polymer silver ion is a mixture of a hydroalcoholic polymer silver ion and an organic alcohol aqueous solution polymer silver ion in a ratio of 1: 1.

The weight ratio of the polymer silver ions in the step (3) to the glaze in the step a is 1: 355; the firing temperature in step (4) was 1220 ℃.

Example 4: the ceramic product with the antibacterial function is provided with an antibacterial layer, a glaze layer and a brick layer from top to bottom in sequence, wherein the antibacterial layer is polymer silver ions.

The glaze layer is composed of the following raw materials in parts by weight: 15 parts of high-purity potash feldspar, 20 parts of albite, 13 parts of zirconium silicate, 10 parts of kaolin, 10 parts of barium carbonate, 4 parts of calcined zinc oxide, 10 parts of apatite, 5 parts of calcined talc, 8 parts of alpha-alumina and 35.5 parts of water.

The polymer silver ion is a mixture of a hydroalcoholic polymer silver ion and an organic alcohol aqueous solution polymer silver ion in a ratio of 2: 1.

The weight ratio of the polymer silver ions in the step (3) to the glaze in the step a is 1: 186; the firing temperature in step (4) was 1250 ℃.

The ceramic products having antibacterial function obtained in examples 1 and 2 were tested for antibacterial property, and staphylococcus aureus, escherichia coli, and pseudomonas aeruginosa were added at the same concentrationsThe solution was measured at 0.5ml/250cm²The bacteria were respectively applied to the surfaces of example 1, example 2 and the blank control (ceramic product without antibacterial property), the surfaces of example 1, example 2 and the blank control were covered with a plastic film, the bacteria solution was kept dry, and the bacteria number on the surfaces of example 1, example 2 and the blank control was measured after 10 minutes, and the test results are shown in the following table:

as seen from the data in the table, the ceramic product with the antibacterial function prepared by the invention has good and rapid sterilizing performance.

All ranges in this application, including ranges for parts by weight of the starting materials and ranges for production parameters, etc., include both end values.

The above embodiments are not intended to limit the scope of the present invention, and those skilled in the art can make various modifications and changes without departing from the overall spirit of the present invention.