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Rare earth antibacterial ceramic glaze

A technology of antibacterial ceramics and glazes, applied in the field of ceramic glazes, can solve the problems of no antibacterial activity of zinc oxide metal ions, high cost of silver, and low antibacterial effect of zinc

Active Publication Date: 2020-02-07
FOSHAN OCEANO CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Antibacterial function ceramics mainly rely on antibacterial glazes. At present, metal ion antibacterial agents such as silver system, zinc system and copper system are mainly used in glazes. The copper system is not suitable for ceramic glazes because of its coloring effect, and the cost of silver Relatively high, so the antibacterial agent of zinc system is more suitable for antibacterial agent of ceramic glaze, however, the antibacterial effect of zinc is lower than that of copper and silver
In order to improve the antibacterial effect of zinc, Chinese invention patent CN106417375A discloses a copper-zinc composite oxide doped with rare earth cerium and its preparation method and application. The addition of rare earth cerium promotes the formation of nano-wurtzite crystals with a particle size of 30-50nm Zinc oxide can reduce the bandgap value and improve its photocatalytic antibacterial activity. This invention patent is mainly used as a bactericidal and antibacterial agent in the field of industrial circulating cooling water. This patent is only aimed at the photocatalytic antibacterial activity of copper-zinc composite oxides, and has no Point out that zinc oxide itself has antibacterial activity of metal ions, and this patent is not applicable to high-temperature firing of ceramic glazes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A rare earth antibacterial ceramic glaze, which comprises the following components in terms of raw material weight percentage: 34% transparent frit powder with a fineness of 300 mesh, 4.3% washed soil, 35% with a chemical purity of 90% and a fineness of 300 mesh metal zinc powder, 0.3% cerium nitrate, 0.2% lanthanum chloride, 0.1% methyl, 0.15% sodium tripolyphosphate, 26% water. The chemical composition of wherein said transparent frit powder is by weight percentage by 40% SiO 2 , 10% Al 2 o 3 , 12% B 2 o 3 , 15% CaO, 2% MgO, 20% K 2 O, 1% Na 2 O composition.

[0015] The above raw material components were mixed and ball milled for 15 minutes to obtain the finished glaze of Example 1. Gained embodiment 1 glaze finished product is applied to ceramic tile surface and carry out antibacterial test (adopting standard JC / T897-2014), measure its E. coli antibacterial rate 94.2%, Staphylococcus aureus antibacterial rate 96.9%, and to The glazed surface of its ceramic t...

Embodiment 2

[0017] A rare earth antibacterial ceramic glaze, which comprises the following components in terms of raw material weight percentage: 30% transparent frit powder with a fineness of 300 mesh, 3.4% washed soil, 32% with a chemical purity of 95% and a fineness of 300 mesh metal zinc powder, 0.25% samarium nitrate, 0.1% europium acetate, 0.1% methyl, 0.15% sodium tripolyphosphate, 30% water. The chemical composition of wherein said transparent frit powder is by weight percentage by 45% SiO 2 , 5% Al 2 o 3 , 15% B 2 o 3 , 10% CaO, 3% MgO, 20% K 2 O, 2% Na 2 O composition.

[0018] The above raw material components were mixed and ball milled for 25 minutes to obtain the finished glaze of Example 2. The glaze finished product of gained embodiment 2 is applied to the ceramic tile surface and carries out antibacterial test (adopting standard JC / T897-2014), measures its Escherichia coli antibacterial rate 97.2%, Staphylococcus aureus antibacterial rate 98.5%, and to The glazed s...

Embodiment 3

[0020] A rare earth antibacterial ceramic glaze, which comprises the following components in terms of raw material weight percentage: 25% transparent frit powder with a fineness of 300 mesh, 5% washed soil, 40% with a chemical purity of 93% and a fineness of 300 mesh metal zinc powder, 0.2% samarium nitrate, 0.1% europium acetate, 0.1% lanthanum chloride, 0.1% methyl, 0.15% sodium tripolyphosphate, 29.35% water. The chemical composition of wherein said transparent frit powder is by weight percentage by 50% SiO 2 , 5% Al 2 o 3 , 12% B 2 o 3 , 10% CaO, 2% MgO, 20% K 2 O, 1% Na 2 O composition.

[0021] The above raw material components were mixed and ball milled for 10 minutes to obtain the finished glaze of Example 3. The glaze finished product of gained embodiment 3 is applied to the ceramic tile surface and carries out antibacterial test (adopting standard JC / T897-2014), measures its E. The glazed surface of its ceramic tile is tested for contact angle, and its contac...

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Abstract

The invention discloses a rare earth antibacterial ceramic glaze which comprises the following components in percentage by weight: 25-35% of transparent frit powder, 3.5-5% of washed kaolin, 30-40% ofmetal zinc powder, 0.1-0.5% of mixed rare earth salt, 0.1-0.15% of methyl, 0.15-0.2% of sodium tripolyphosphate and 25-30% of water. Zinc oxide and zinc silicate formed by metal zinc powder are usedas sources of zinc antibacterial ions and are compounded with rare earth ions to achieve an antibacterial synergistic effect, so that the metal zinc powder can be effectively promoted to react in theceramic glaze to form nanoscale zinc oxide and sphalerite crystals, the glaze surface is promoted to form a hydrophobic structure, namely, the requirement of bacteria on humidity is limited by utilizing a hydrophobic function, and the purpose of efficiently resisting bacteria is achieved.

Description

technical field [0001] The invention relates to the field of decorative building materials, in particular to a ceramic glaze. Background technique [0002] Glazed tiles are recognized by people because of their advantages of easy cleaning and rich decoration. At present, ceramic glazed tiles have become the mainstream ceramic tile products in the market. With the continuous improvement of people's living environment requirements, functional ceramic tiles have entered the market. Consumer vision, especially antibacterial functional ceramic tiles. Antibacterial function ceramics mainly rely on antibacterial glazes. At present, metal ion antibacterial agents such as silver system, zinc system and copper system are mainly used in glazes. The copper system is not suitable for ceramic glazes because of its coloring effect, and the cost of silver Relatively high, so the antibacterial agent of zinc system is more suitable for antibacterial agent of ceramic glaze, however, the antib...

Claims

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Application Information

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IPC IPC(8): C03C8/18C03C8/02
CPCC03C8/18C03C8/02Y02P40/60
Inventor 倪成林柯善军田维马超吴洋
Owner FOSHAN OCEANO CERAMICS
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