Antibacterial glass product and preparation method thereof

Abstract

The invention discloses an antibacterial glass product and a preparation method thereof. The preparation method of the antibacterial glass product comprises the following steps: 1, in a reaction kettle, providing a silver salt aqueous solution and a glass product containing sodium ions, and covering at least part of the surface of the glass product with the silver salt aqueous solution; 2, setting the temperature and pressure in the reaction kettle to make the silver salt aqueous solution become a subcritical state aqueous solution, and carrying out a reaction; and 3, cooling after the reaction is finished, taking out the glass product doped with the silver ions on the surface, cleaning and drying. The preparation method of the antibacterial glass product provided by the invention is simple and easy to operate and short in time consumption, and the cost is greatly reduced. A silver ion antibacterial layer which is uniformly distributed can be obtained on the surface of the glass product without a high-temperature annealing step, and the obtained antibacterial glass product has a lasting antibacterial effect.

Description

technical field [0001] The invention belongs to the technical field of glass products, and in particular relates to an antibacterial glass product and a preparation method thereof. Background technique [0002] Glass products are often used to place food, and glass products for food are required to have certain antibacterial properties. Some of the existing antibacterial glass products are usually formed on the surface of the glass products to achieve their antibacterial properties, and one of the methods for forming the antibacterial layer is to form a silver ion layer on the surface of the glass products by ion diffusion. [0003] CN105523266B discloses adding silver nitrate into potassium nitrate and exchanging glass surface ions and silver ions through high-temperature melting. The temperature required for high-temperature melting is very high, resulting in high process costs. CN111499219A discloses adding silver nitrate in aqueous solution and spraying it on the surfac...

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Problems solved by technology

[0003] CN105523266B discloses adding silver nitrate in potassium nitrate and realizing the exchange of glass surface ions and silver ions through high-temperature melting. The temperature required for high-temperature melting is very high, resulting in high process costs

CN111499219A discloses adding silver nitrate in aqueous solution and spraying on the container surface, heating at high temperature to promote ion exchange, this process is complicated, and the dispersion liquid has fluidity, it is difficult to form a uniform surface functional layer, it is difficult to form an effective antibacterial layer and Generate sufficient enriched silver ions on the container surface

When the ion diffusion method is used to form a silver infiltration layer on the glass surface, the conventionally used process is more complicated and has many steps, especially when performing the thermal diffusion step, the required process temperature is high, time-consuming and costly. And the antibacterial effect of the obtained antibacterial glass products is not durable

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