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Technology for preparing antibacterial ceramic at low temperature

A technology of antibacterial ceramics and ceramics, applied in the field of materials, can solve the problems of large addition, consumption, loss of activity, etc., and achieve the effects of reducing the amount of use, obvious economic benefits, strong resistance to breakage and chemical stability

Inactive Publication Date: 2014-08-13
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 includes the following steps:

[0026] (1) The following parts are all parts by weight: take SrCO 3 0.8 servings, KNO 3 0.7 part, NaNO 3 0.4 part, MgCO 3 2.5 servings and LiNO 3 0.6 part, ball-milled in a ball mill for 30 minutes after mixing, then placed in a high-temperature furnace and calcined at 1300 ° C for 0.5 hours, then the molten solution was taken out in the air to cool and then pulverized and passed through an 800-mesh sieve as a flux; 2 parts 40-120 nm ZrO 2 As a ceramic enhancer; take 3 parts of 1000 mesh Zn 3 (PO 4 ) 2 ·2H 2 O is a ceramic toughening agent; take SiO 250 parts, Al 2 O 3 25 copies, B 2 O 3 15 parts are used as the base material; the above base 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) According to the mass ratio of silver oxide to zinc oxide of 0.7:0.3, respectively weigh silver oxide and...

Embodiment 2

[0031] The preparation process includes the following steps:

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

[0033] (2) According to the mass ratio of silver oxide to zinc oxide of 0.7:0.3, respe...

Embodiment 3

[0037] The preparation process includes the following steps:

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

[0039] (2) According to the mass ratio of silver oxide to zinc oxide of 0.3:0.7, respectively weigh silver oxide and zinc oxide and mi...

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Abstract

The invention provides a method for preparing antibacterial ceramics under low temperature conditions, which is characterized in that: a SiO2-Al2O3-B2O3-MO (MO is ceramic reinforcement, toughening, fluxing and other additives) multi-component inorganic material is used as Carrier, sinter the antibacterial active agent on the ceramic surface at 750~1000°C, so that the ceramic has antibacterial properties. The antibacterial active agent is one or both of nanometer silver oxide or zinc oxide. After sintering, the antibacterial active agent can be firmly attached to the surface of the ceramics, the surface is smooth, and it has strong break resistance and chemical stability. Because the low-temperature sintering process is adopted, the antibacterial active agent can be well protected, the usage amount of the antibacterial active agent can be obviously reduced, and the antibacterial active agent has obvious economic benefits. The prepared antibacterial ceramics have an antibacterial rate of more than 95-99% against common virus bacteria such as Escherichia coli and Staphylococcus aureus.

Description

technical field [0001] The invention belongs to the field of material technology, and more specifically relates to a method of 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 ceram...

Claims

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Application Information

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Patent Type & Authority Patents(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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