Preparation method of antibacterial ceramic

A technology of antibacterial ceramics and water glass solution, which is applied in the field of new ceramic materials, can solve the problems of easy oxidation and discoloration of antibacterial metal ions, harsh environment for antibacterial action, and low utilization rate of antibacterial agents, so as to protect product quality or human health, ceramics as a whole Excellent texture and strong anti-destructive effect

Active Publication Date: 2016-01-27
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

[0004] The present invention aims at the low utilization rate, poor stability and short duration of the antibacterial agent in the preparation of the above antibacterial ceramics; and the antibacterial property is single, easy to produce drug resistance, and the environment for antibacterial action is harsh; It is easy to oxidize, discolor and pollute the color of the glaze surface. A preparation method for antibacterial ceramics is provided. The glaze formula and glazing method are optimized and improved. The antibacterial ceramics produced use the sol-gel method to attach antibacterial ions to white carbon black. The antibacterial powder material is obtained on the carrier, mixed with ordinary glaze, and wet ball milled to obtain a composite antibacterial glaze slurry; then the "double-layer glazing method" is used to evenly pour the ordinary glaze on the outer wall of the green body or the green body. Layer and spray the outer layer of composite antibacterial glaze slurry, and finally bake at high temperature to form the required antibacterial ceramics

Method used

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  • Preparation method of antibacterial ceramic

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Effect test

Embodiment 1

[0027] Embodiment 1: the preparation method of this silver-based antibacterial ceramic is as follows:

[0028] (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 500rpm Stir and mix for 15min, wherein the water glass solution concentration is 10wt%, and the sodium bicarbonate solution concentration is 5wt%;

[0029](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 reactant. The cooled ...

Embodiment 2

[0041] Embodiment 2: the preparation method of this silver-based antibacterial ceramic is as follows:

[0042] (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 400rpm for 25min, the water glass solution Concentration is 5wt%, and baking soda solution concentration is 15wt%;

[0043] (2) Take the water glass solution and the baking soda solution with a volume ratio of 1:1.5 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 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. After cooling, The gel-like reactant was vacuum filtered, and then the filtered product...

Embodiment 3

[0052] Embodiment 3: the preparation method of this zinc series antibacterial ceramics is as follows:

[0053] (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 450rpm for 15min, in which the water glass Solution concentration is 20wt%, and baking soda solution concentration is 5wt%;

[0054] (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 into the In the reaction solution of step (1), place the mixture at 85°C for 25 minutes, adjust the pH to 6 with nitric acid, and finally add 0.6 mol / L zinc sulfate solution to react for 2 hours to obtain a gel-like reactant. The cooled The gel-like reactant is vacuum filtered, and then the filtered product is baked at 115°C for ...

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Abstract

The invention discloses a preparation method of an antibacterial ceramic. According to the method, a glaze formulation and a glazing method are optimized and improved, so that the durable ceramic with a high antibacterial property can be obtained by a conventional universal ceramic production method under the conventional universal preparation conditions. The method has the outstanding characteristics that antibacterial ions are attached to a white carbon black carrier by a sol-gel method so as to obtain an antibacterial powder material, the antibacterial powder material is mixed with a common glaze material and the mixture is subjected to wet ball milling to prepare composite antibacterial glaze slip; then by adopting a double-layer glazing method, a common glaze material inner layer is uniformly poured and a composite antibacterial glaze slip outer layer is uniformly sprayed on the outer wall of a green body or a biscuit; finally, the obtained product is baked at a high temperature to form the required antibacterial ceramic. The method has the advantages that not only the product has the antibacterial broad-spectrum property and a high sterilizing rate, has no drug resistance and is environmental-friendly and healthy, but also the antibacterial metal ions are lost a little in the baking process, and have a high ion activity and a high usage rate; the antibacterial glaze material has good adsorbability and influences a ceramic green body a little; the ceramic is integrally high in quality and has strong damage resistance; moreover, a glaze surface is smooth and wear-resistant. Generally, the antibacterial ceramic prepared by the preparation method is controllable in cost, has high cost performance and is beneficial to scale quantitative production in the future market.

Description

technical field [0001] The invention discloses a method for making a novel antibacterial ceramic, in particular relates to an improved glaze method for efficiently utilizing antibacterial metal ions by using white carbon black as a carrier, and belongs to the technical field of novel ceramic materials. Background technique [0002] With the rapid development of society, the living environment of human beings is facing more and more hazards. The threats from various harmful bacteria and viruses have made human survival and health problems increasingly severe. Living in a space filled with a large number of microorganisms, the antibacterial and antiviral functions of production and living materials have attracted more and more attention from the society. For this reason, people's demand for antibacterial functional materials is getting higher and higher, and ceramics are widely used in people's daily life, so antibacterial ceramics as a new type of functional materials have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/89
Inventor 张彬郭一婧唐晓宁李欢胡艳玲
Owner KUNMING UNIV OF SCI & TECH
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