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Preparation method and application of silver-free powdery solid solution anti-bacterial agent

An antibacterial agent and solid solution technology, which is applied in the field of preparation of non-silver powdered solid solution antibacterial agents, can solve the problems of high price of processing raw materials, blackening and yellowing of antibacterial products, and achieves the effect of high antimicrobial activity and easy dispersion.

Inactive Publication Date: 2014-12-17
ANHUI WANXING IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to the high price of processing raw materials, complex processing techniques, increased costs, and increased added value of new products, which are difficult for manufacturers and users to accept, the silver ions in the antibacterial agent will change color when exposed to light or heat, so that the products using antibacterial agents cannot appear white or white. bright colors
After a certain period of time, the antibacterial product turns black and yellow, which makes the product lose its commodity value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Add deionized water to the reaction kettle, add zinc nitrate with antibacterial function, stir and dissolve to make the concentration 1.0mol / L, add calcium oxide to make the concentration 1 / L, stir the aqueous solution for 2 hours, and use a centrifuge Or a filter press separates the aqueous solution from solid to liquid to obtain a filter cake, which is cleaned and ground to obtain non-silver powder solid solution antibacterial agents with an average particle size of 1.29 μm.

Embodiment 2

[0046] Add water to the reaction kettle, add copper chloride with antibacterial function, stir and dissolve to make the concentration 2mol / L, add magnesium hydroxide to make the concentration 3mol / L, stir the aqueous solution for 1 hour, and use a centrifuge or press to The filter separates the aqueous solution from solid to liquid to obtain a filter cake, which is cleaned and ground to obtain non-silver powder solid solution antibacterial agents with an average particle size of 1.5 μm.

Embodiment 3

[0048] The antibacterial agent in embodiment 1 is applied on ceramics, comprises the steps:

[0049] (I) Dry the antibacterial agent at a temperature of 100-300°C and remove water;

[0050] (II) Grinding the ceramic glaze raw materials with grinding equipment and adding water to make common glaze slurry;

[0051] (Ⅲ) adding an antibacterial agent in a ratio of 3% of the total weight of the glaze slurry, and then grinding, so that the antibacterial agent and the glaze are fully affine and dispersed to obtain an antibacterial glaze slurry;

[0052] (Ⅳ) Hanging glaze, constantly stirring the glaze slurry during the glaze hanging process;

[0053] (Ⅴ) drying and sintering at a temperature of 10-30°C higher than the original sintering temperature of 1000°C to make antibacterial ceramic products.

[0054] Antibacterial effect:

[0055] According to "Disinfection Technical Specifications", 0.02ml of Escherichia coli and Staphylococcus aureus bacteria solution was added dropwise on...

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PUM

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Abstract

The invention discloses a preparation method and application of a silver-free powdery solid solution anti-bacterial agent. The silver-free powdery solid solution anti-bacterial agent is prepared by adding a zinc salt or a copper salt and an oxide or a hydroxide to water, and performing a stirring process, a separating process, a cleaning process and a grinding process. The preparation method is simple and low in cost. The silver-free powdery solid solution anti-bacterial agent is wide in applications, is high-temperature-resistant, is safe and is good in anti-bacterial effect.

Description

technical field [0001] The invention relates to a solid solution technology, in particular to a preparation method and an application method of a non-silver powder solid solution antibacterial agent. Background technique [0002] Since the 1980s, some institutions in Japan and later in China have successively developed and produced silver-containing inorganic antibacterial agents (or silver series antibacterial agents), which have been applied to many industries such as plastics, and a large number of unprecedented antibacterial agents have been produced. The brand-new product that can automatically kill and suppress pathogenic microorganisms attached to the surface of the product has been widely welcomed. [0003] However, there are some defects in the invention patents and technical methods proposed both at home and abroad. In addition to the high price of processing raw materials, complex processing techniques, increased costs, and increased added value of new products, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/20A01N59/16A01P1/00C04B41/86C08L23/12C08K9/12C09D167/00C09D5/14
Inventor 蔡惠萍田树霖
Owner ANHUI WANXING IND LTD
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