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Technology for preparing antibacterial ceramic at low temperature

An antibacterial ceramic, low-temperature technology, applied in the field of materials, can solve the problems of loss of activity, consumption, large addition amount, etc., and achieve the effect of strong rupture resistance and chemical stability, obvious economic benefits, and reducing the amount of use.

Inactive Publication Date: 2013-06-12
MINNAN NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the high-temperature-resistant inorganic material carrier can protect the antibacterial active agent to a certain extent, it still consumes a large amount of antibacterial active material
The patent "Antibacterial Ceramic Glaze and Its Application" (Publication No.: CN1324783A) attaches antibacterial agents to ceramics by adding some organic polymers and baking at low temperature, but the stability, durability and hardness of organic polymers are far from comparable to Inorganic ceramic material ratio
[0003] The present invention is aimed at the disadvantages of current antibacterial agents that will lose their activity after high-temperature calcination in ceramic applications and require a large amount of addition. A multi-component inorganic material is used as a carrier, and the antibacterial active agent can be firmly sintered under low-temperature calcination conditions. Antibacterial ceramics are prepared on the surface of ceramics, and the antibacterial active agent is less affected by low temperature sintering

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation process comprises the following steps:

[0026] (1) The parts described below are all parts by weight: take SrCO 3 0.8 parts, KNO 3 0.7 parts, NaNO 3 0.4 parts, MgCO 3 2.5 parts and LiNO 3 0.6 parts, mixed and ball milled in a ball mill for 30 minutes, then placed in a high-temperature furnace and calcined at 1300°C for 0.5 hour, then the molten solution was taken out to cool in air and then pulverized and passed through a 800 mesh sieve as a flux; 2 parts 40-120 nm ZrO 2 As a ceramic reinforcement; take 3 parts of 1000 mesh Zn 3 (PO 4 ) 2 2H 2 O is ceramic toughening agent; take SiO 250 parts, Al 2 o 3 25 copies, B 2 o 3 15 parts are used as the matrix material; the above-mentioned matrix material, flux, reinforcing agent, and toughening agent are mixed, ball milled for 1 hour and passed through a 400-mesh sieve as a carrier.

[0027] (2) Weigh silver oxide and zinc oxide respectively according to the mass ratio of silver oxide and z...

Embodiment 2

[0031] The preparation process comprises the following steps:

[0032] (1) The parts described below are all parts by weight: take SrCO 3 0.08 parts, KNO 3 0.32 parts, NaNO 3 0.6 parts, MgCO 3 1.1 parts and LiNO 3 0.4 parts, mixed and milled in a ball mill for 30 minutes, then placed in a high-temperature furnace and calcined at 1280°C for 1 hour, then the melt was taken out, cooled in air, crushed and passed through 800 mesh as a flux; take 3.5 parts 40-120nm ZrO 2 As a ceramic reinforcing agent; take 2.0 parts of 1000 mesh Zn 3 (PO 4 ) 2 2H 2 O is ceramic toughening agent; take SiO 2 60 parts, Al 2 o 3 20 copies, B 2 o 3 12 parts are used as the matrix material; the above-mentioned matrix material, multi-component flux, ceramic reinforcing agent, and ceramic toughening agent are mixed, ball milled for 1 hour and passed through a 400-mesh sieve as a carrier.

[0033] (2) Weigh silver oxide and zinc oxide respectively according to the mass ratio of silver ...

Embodiment 3

[0037] The preparation process comprises the following steps:

[0038] (1) The parts described below are all parts by weight: take SrCO 3 1.0 parts, KNO 3 0.5 parts, NaNO 3 0.5 parts, MgCO 3 1.6 parts and LiNO 3 1.4 parts, mixed and ball milled in a ball mill for 30 minutes, then placed in a high-temperature furnace and calcined at 1350°C for 1.5 hours, then took out the molten solution and cooled it in the air and then pulverized it as a multi-component flux; 6 parts of 40 -120nm ZrO 2 As a ceramic reinforcement; take 4 parts of 1000 mesh Zn 3 (PO 4 ) 2 2H 2 O is ceramic toughening agent; take SiO 2 40 parts, Al 2 o 3 35 copies, B 2 o 3 20 parts are used as the matrix material; the above-mentioned matrix material, flux, reinforcing agent, and toughening agent are mixed, ball milled for 1 hour, and passed through a 400-mesh sieve as a carrier.

[0039] (2) Weigh silver oxide and zinc oxide according to the mass ratio of silver oxide and zinc oxide at 0.3:0.7 an...

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Abstract

The invention provides a technology for preparing antibacterial ceramic under a condition of low temperature. The technology is characterized by utilizing an SiO2-Al2O3-B2O3-MO multi-component inorganic material as a carrier, wherein MO referring to auxiliaries such as a ceramic reinforcing auxiliary, a toughening auxiliary and a fluxing auxiliary; and sintering an antibacterial activator on the surface of ceramic at the temperature of 750-1000 DEG C, thereby enabling the ceramic to obtain antibacterial property. The antibacterial activator is one or two of nanometer silver oxide or silver oxide. The sintered antibacterial activator can be firmly attached on the surface layer of the ceramic and has a smooth surface, strong breakage resistance and strong chemical stability. By adopting a low temperature sintering process, the antibacterial activator can be protected very well, the usage amount of the antibacterial activator can be reduced remarkably, and the technology has obvious economic benefit. The antibacterial rate of the prepared antibacterial ceramic to common viruses and bacteria such as escherichia coli and staphylococcus aureus achieves over 95-99%.

Description

technical field [0001] The invention belongs to the field of material technology, and more specifically relates to using a multi-component inorganic composite material as a carrier to firmly sinter an antibacterial active agent on the surface of ceramics under low-temperature firing conditions, so that the ceramics have significant antibacterial properties. Background technique [0002] Harmful bacteria and viruses have seriously affected people's health and have received widespread attention. For this reason, people have developed various antibacterial products. Antibacterial ceramics are closely related to people's lives. The preparation of many antibacterial ceramics is to prepare antibacterial ceramics by directly adding antibacterial active agents in the glaze water, and then sintering at high temperature. For example, the invention patent "Inorganic antibacterial ceramics and production process" (publication number CN1279222A) prepares antibacterial ceramics by direc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/85
Inventor 郑子山郭鸿旭林珩林俊陈国良庄庆龙
Owner MINNAN NORMAL UNIV
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