High-strength antibacterial glass and preparation method thereof

An antibacterial glass and high-strength technology, which is applied in the field of high-strength antibacterial glass and its preparation, can solve the problems of poor scratch resistance and short service life of the film layer, and achieve small ion exchange, good antibacterial performance, and light transmittance. Good results

Inactive Publication Date: 2017-01-25
CHINA BUILDING MATERIALS ACAD
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AI Technical Summary

Problems solved by technology

Inorganic antibacterial agents are added during the glass melting process. In this method, antibacterial ions participate in the construction of the glass network structure. Due to the additional addition of antibacterial ions, the antibacterial glass has a certain change in the spatial structure compared with ordinary glass with roughly the same composition. Other properties will also change; the coating antibacterial glass itself has poor scratch resistance and short service life

Method used

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preparation example Construction

[0024] One embodiment of the present invention proposes a kind of preparation method of high strength antibacterial glass, it comprises the following steps:

[0025] 1) putting glass into molten potassium nitrate for ion exchange to obtain exchanged glass;

[0026] Among them, potassium nitrate is used for ion exchange with glass, and potassium ions are ion-exchanged with some sodium ions in the glass, so that potassium ions enter the glass and increase the strength of the glass;

[0027] Preferably, the ion exchange temperature used in this embodiment is 400-500°C, and the exchange time is 2-12 hours, and the glass prepared by using the above ion exchange temperature and time has a large surface stress value;

[0028] Preferably, the glass used in this embodiment is one of soda lime glass, aluminosilicate glass and borosilicate glass; the above glass contains alkali metal ions;

[0029] 2) mixing potassium nitrate with at least one ionic compound among silver ion compounds, ...

Embodiment 1

[0038] Put the soda-lime glass into molten potassium nitrate, conduct ion exchange at 400°C for 2 hours, and obtain the exchanged glass; add 980g of potassium nitrate and 20g of silver nitrate into the molten salt tank, heat to melt, and exchange the glass Immerse completely in the mixture of molten potassium nitrate and silver nitrate, conduct ion exchange at 350°C for 2 minutes, take out the glass, cool it, and wash it to obtain high-strength antibacterial glass.

[0039] The surface stress value of the high-strength antibacterial glass in the present embodiment is 400MPa, and the antibacterial rate to E. The rate is 98.67%, and the percentage of silver ions on the surface is 0.05%, which is only 0.1% lower than that of glass without exchange.

Embodiment 2

[0041] Put the aluminosilicate glass into molten potassium nitrate, conduct ion exchange at 500°C for 12 hours to obtain the exchanged glass; add 990g of potassium nitrate and 10g of copper sulfate into the molten salt tank, heat to melt, and exchange The glass is completely immersed in the mixture of molten potassium nitrate and copper sulfate, ion-exchanged at 480°C for 120 minutes, the glass is taken out, cooled, and cleaned to obtain high-strength antibacterial glass.

[0042]The surface stress value of the high-strength antibacterial glass in the present embodiment is 457MPa, the antibacterial rate of E. coli is 96.32%, the antibacterial rate of Staphylococcus aureus is 95.88%, the antibacterial rate of Aspergillus flavus is 97.04%, and the antibacterial rate of Aspergillus niger The percentage of copper ions on the surface is 95.23%, which is only 0.7% lower than that of glass without exchange.

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Abstract

The invention relates to high-strength antibacterial glass and a preparation method thereof. The preparation method comprises the following steps: 1) putting glass into molten potassium nitrate and carrying out ion exchange, so that exchanged glass is obtained; and 2) mixing potassium nitrate with at least one ionic compound of a silver ionic compound, a copper ionic compound and a zinc ionic compound, heating and melting to obtain a molten mixture, completely immersing the exchanged glass into the mixture and carrying out ion exchange, taking out glass, cooling, and cleaning, so that the high-strength antibacterial glass is obtained. The preparation method of the high-strength antibacterial glass is simple, the cost is low, and large scale production can be realized; the prepared glass is high in strength, good in antibacterial property and good in light transmittance; and the prepared high-strength antibacterial glass has good resistance on bacteria such as escherichia coli and staphylococcus aureus and fungi such as aspergillus flavus and aspergillus niger.

Description

technical field [0001] The invention relates to a high-strength antibacterial glass, in particular to a high-strength antibacterial glass and a preparation method thereof. Background technique [0002] With the advancement of science and technology and the improvement of people's living standards, people pay more and more attention to environmental sanitation. In life, it is not uncommon for people to experience discomfort caused by microorganisms and bacteria that grow in kitchens and bathrooms. Therefore, consumers are very eager for daily necessities to have sterilization and disinfection functions. At present, antibacterial materials and products have been put on the market in developed countries abroad, but in my country, although there are reports of achievements and a small number of products on the market, it is still in the initial development stage. The subject areas involved in the preparation of antibacterial materials are very wide, the technology is difficult,...

Claims

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Application Information

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IPC IPC(8): C03C21/00
CPCC03C21/002C03C21/001C03C21/005
Inventor 张凡陆勇祺左岩付静徐志伟李要辉穆元春王晋珍安远
Owner CHINA BUILDING MATERIALS ACAD
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