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A kind of method for preparing antibacterial ceramics

An antibacterial ceramic and water glass solution technology, applied in the fields of botanical equipment and methods, animal repellents, biocides, etc., can solve the problem of easy oxidation and discoloration of antibacterial metal ions to pollute the surface of finished products, harsh environment for antibacterial effect, and utilization of antibacterial agents. low problems, to achieve the effect of novel preparation method, strong resistance to damage and high cost performance

Active Publication Date: 2017-07-07
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the disadvantages of low utilization rate, poor stability and short duration of antibacterial agent in the preparation of above antibacterial ceramics; single antibacterial property, easy to produce drug resistance, harsh environment for antibacterial action; easy oxidation and discoloration of antibacterial metal ions to pollute the surface of finished products, etc., provides A method for preparing antibacterial ceramics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: the preparation method of this silver-based antibacterial ceramic is as follows:

[0025] (1) Assemble the constant temperature stirring reaction device, preheat the hot water glass solution and the baking soda solution to 90°C respectively, measure the two reactants with a volume ratio of 1:1.3 and place them in the reaction vessel at 90°C at 500°C Stirring and mixing at rpm for 15 min, wherein the concentration of water glass solution is 15 wt%, and the concentration of baking soda solution is 10 wt%;

[0026] (2) Take the water glass solution and the baking soda solution with a volume ratio of 1:1.3 and preheat them to 90°C, and then pour the preheated water glass solution and baking soda solution into the water at a stirring rate of 150rpm. In the reaction solution of step (1), place the mixture at 90°C for 20 minutes, adjust the pH to 2 with nitric acid, and finally add 0.001 mol / L silver nitrate solution to react for 1 hour to obtain a gel-like react...

Embodiment 2

[0034] Embodiment 2: the preparation method of this silver-based antibacterial ceramic is as follows:

[0035] (1) Preheat the hot water glass solution and the baking soda solution to 85°C respectively, measure the two reactants with a volume ratio of 1:1.5, place them in a reaction vessel at 85°C, and stir and mix at 300 rpm for 30 minutes. The water glass solution concentration is 12 wt%, and the baking soda solution concentration is 9 wt%;

[0036] (2) Take the water glass solution and the baking soda solution with a volume ratio of 1:1.5 and preheat them to 85°C, and then pour the preheated water glass solution and baking soda solution into the water at a stirring rate of 200rpm. In the reaction solution of step (1), place the mixture at 85°C for 25 minutes, adjust the pH to 2 with nitric acid, and finally add 0.005 mol / L silver nitrate solution to react for 1.5 hours to obtain a gel-like reactant. The final gel-like reactant was vacuum filtered, and then the filtered pro...

Embodiment 3

[0042] Embodiment 3: the preparation method of this zinc series antibacterial ceramics is as follows:

[0043] (1) Preheat the hot water glass solution and the baking soda solution to 85°C respectively, measure the two reactants with a volume ratio of 1:1.25, place them in a reaction vessel at 85°C and stir and mix at 450 rpm for 15 minutes, water The concentration of the glass solution is 20 wt%, and the concentration of the baking soda solution is 15 wt%;

[0044] (2) Take the water glass solution and the baking soda solution with a volume ratio of 1:1.25 and preheat them to 85°C respectively, and then pour the preheated water glass solution and baking soda solution in succession at a stirring rate of 150 rpm. In the reaction liquid of step (1), react the mixed reaction liquid at 85°C for 25 min, adjust the pH to 6 with nitric acid, and finally add 0.6 mol / L zinc sulfate solution to react for 1.25 h to obtain a gel-like reactant , the cooled gel-like reactant was vacuum fil...

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Abstract

The invention discloses a new method for preparing antibacterial ceramics. In the method, antibacterial ions are attached to a white carbon black carrier by a sol-gel method to obtain an antibacterial powder material, which is mixed with common green body raw materials and wet ball milled to obtain the antibacterial powder material. Antibacterial green body slurry; this method creatively improves the green body formula, so that durable, durable and high antibacterial ceramics can also be produced under simple, convenient, and low-cost conventional processes and preparation conditions. The product of the present invention not only has Antibacterial broad-spectrum, high bactericidal rate, no drug resistance, environmentally friendly and healthy; and antibacterial metal ions have less loss in the baking process, high ion activity, and high utilization rate; antibacterial agents are mixed with green bodies evenly, and have good adhesion, which is good for ceramic bodies. The impact is small; the baked ceramics have excellent overall texture, no cracks on the surface, strong damage resistance and high wear resistance. From a market point of view, the preparation method of the antibacterial green body is novel, low in cost, highly cost-effective, and widely used, which is conducive to large-scale quantitative production in the future market.

Description

technical field [0001] The invention discloses a manufacturing process of a novel antibacterial ceramic, in particular to a method for uniformly doping antibacterial metal ions into a ceramic body with white carbon black as a carrier, and belongs to the technical field of novel ceramic materials. Background technique [0002] The rapid advancement of science and technology has increased people's requirements for production and life, especially the deterioration of global environmental problems in recent decades, making the research and development and preparation of antibacterial and antiviral functions widely supported and concerned by the society. People's demand and expectation for antibacterial functional materials have become very strong. The market products in this field have developed from the previous low-level, low-efficiency, short-term, high-cost antibacterial and sterilizing effects to high-efficiency sterilization, continuous action, and long-lasting A new level...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/00A01N59/16A01N25/08
Inventor 张彬郭一婧唐晓宁李欢姜苗苗
Owner KUNMING UNIV OF SCI & TECH
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