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Slurry and ceramic for high-strength anti-bacterial ceramic, and preparation methods thereof

A technology of antibacterial ceramics and slurry, applied in the field of antibacterial ceramics and its preparation, can solve the problems of stability problems that have not been effectively and finally solved, affecting the appearance of white or light-colored products, etc., and achieves convenient implementation, easy implementation and high gloss. The effect of catalytic activity

Inactive Publication Date: 2012-05-02
HUNAN BOOM NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silver ions in silver-based antibacterial materials have strong antibacterial activity, but the chemical properties of silver ions are relatively active, and they are sensitive to heat and light, especially after being irradiated by ultraviolet rays, it is easy to form black silver oxide, which affects the appearance of white or light-colored products. Its stability problem has not been effectively and finally resolved
However, there is no report or open literature on applying it to the field of ceramics to make antibacterial ceramics.

Method used

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  • Slurry and ceramic for high-strength anti-bacterial ceramic, and preparation methods thereof
  • Slurry and ceramic for high-strength anti-bacterial ceramic, and preparation methods thereof
  • Slurry and ceramic for high-strength anti-bacterial ceramic, and preparation methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 50g of zinc oxide whiskers and 1.5g of PEG20000 into a beaker, add distilled water to 500ml; emulsify and stir at 2000 rpm for 20 minutes; add LaCl 3 , CeCl 3 5g each; ultrasonic oscillation for 20 minutes; emulsification and stirring at 3000 rpm for 20 minutes; negative pressure suction filtration of the resulting dispersion, discard the filtrate, transfer the obtained solid to a constant temperature drying oven at 60°C for 72 hours; fully grind the dried solid A powdered product is obtained, that is, a rare earth modified tetrapod zinc oxide whisker antibacterial agent.

[0038] Obtain ceramic green bodies and prepared glaze slurry from a sanitary ceramics factory.

[0039] The prepared modified T-ZnOw was first heat-treated at 1200°C for 1 hour, and then 10% of the antimicrobial compound additive was added, and the additive formula was 20% ZrO 2 , 30% CaCO 3 , 20% NaCO 3 , 30% MgO.

[0040] The treated antibacterial agent and water are prepared in a ratio ...

Embodiment 2

[0046] With embodiment 1, but the mixing ratio of antibacterial slurry and ceramic glaze is 1: 30 when preparing antibacterial mixed glaze, promptly the ratio of antibacterial agent is 10% of embodiment 1 (promptly antibacterial agent is 1% of ceramic glaze ). The photos of the prepared antibacterial ceramics after the antibacterial test of Staphylococcus aureus in the dark are as follows: Figure 4 . From Figure 4 It can be seen that the antibacterial performance of the antibacterial agent is also excellent when the content of the antibacterial agent in the glaze is reduced to 1%.

[0047] The color of antibacterial ceramics is similar to that of ceramics without adding antibacterial agents, and there is no obvious change after 60 days of testing.

Embodiment 3

[0049] The antibacterial agent was changed to four-needle zinc oxide whiskers that had not been modified by rare earth. The photos of the prepared ceramics after the antibacterial experiment of Staphylococcus aureus are as follows: Figure 5 .

[0050] From Figure 5 It can be seen that the antibacterial ceramics with 10% four-needle zinc oxide whiskers that have not been modified by rare earths in the glaze grow a little bacteria after being infected and cultured, but the amount is not as much as that of non-antibacterial ceramics. It has a little antibacterial effect, but the antibacterial effect is not good, and it is not as good as adding only 1% rare earth modified four-needle zinc oxide whisker. It can be seen that the rare earth modification in the antibacterial agent is very obvious for improving the antibacterial effect.

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Abstract

The invention discloses slurry and ceramic for high-strength anti-bacterial ceramic, and preparation methods thereof. The preparation method of the high-strength anti-bacterial ceramic comprises the following steps of: further treating rare earth element-modified tetrapod-shaped zinc oxide; and compounding on a ceramic surface in a glaze mixing or surface spraying and re-sintering way. In the invention, modified tetrapod-shaped zinc oxide serving as a novel photocatalytic antibacterial agent is used, so that the prepared anti-bacterial ceramic has the advantages of no change of color, independence of ultraviolet light, high response to visible light, high anti-bacterial property, high glaze strength and capability of overcoming the defects of the conventional anti-bacterial ceramic. Under the enhancing action of whiskers, the glaze strength of anti-bacterial ceramic glaze is further enhanced, and the service life is long. A preparation process of the anti-bacterial ceramic is simple, the change of the ceramic process is small, the anti-bacterial agent can be obtained on a large scale, and large-scale industrial production is facilitated.

Description

Technical field: [0001] The invention relates to an antibacterial ceramic based on a photocatalytic inorganic composite T-ZnOw antibacterial material and a preparation method thereof, belonging to the technical field of new ceramic materials. Background technique [0002] Ceramic products currently used by people, such as bathtubs, urinals, sinks, bowls, plates, plates, and various building materials, such as interior wall tiles, floor tiles, etc., often contact the human body with bacteria during use, so that the surface of these ceramics can be contaminated. And breed various pathogens and conditional pathogens. People are easily infected after coming into contact with it. The research and development of antibacterial ceramics (also known as green ceramics) has very important practical significance to reduce the spread of diseases and enhance physical fitness. [0003] As early as the end of the 1980s, industrially developed countries took the lead in using antibacterial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/85
Inventor 段曦东黄紫橙龙鸿羽唐其云
Owner HUNAN BOOM NEW MATERIALS
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