Preparation method and application antimicrobial liquid

A technology of liquid and antibacterial agent, applied in the field of antibacterial liquid containing charge transport catalyst, can solve the problem of high energy consumption, achieve the effects of low energy consumption, simple fixing process and novel antibacterial mechanism

Inactive Publication Date: 2013-04-24
方孝贤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Usually, these methods are energy-intens...

Method used

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  • Preparation method and application antimicrobial liquid
  • Preparation method and application antimicrobial liquid
  • Preparation method and application antimicrobial liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] First mix the catalyst and dispersant at a ratio of 0.3 g / L, and ultrasonically disperse for 15-30 minutes to obtain an antibacterial liquid, and then disperse it evenly on the surface of ceramic products by dipping-lifting process. Finally heat treatment and drying at 100° C. for 15 minutes to obtain the desired functional ceramic product.

[0030] Preparation of test specimen: Take a piece of the same material as the product to be tested (1.5 cm × 4.0 cm), make an antibacterial coating according to the above process, and use it as a specimen to test the antibacterial performance (the same below).

[0031] Then the counting method was used to analyze the antibacterial properties of the functional ceramics against Escherichia coli (E. coli) (the same below). The specific operations are all aseptic operations, as follows: put the bacteria in the Log phase into LB liquid medium at 37 °C for 2 hours, and then adjust the bacterial concentration to 10 3 cells / ml. Dispersi...

Embodiment 2

[0034] First mix the catalyst and dispersant at a ratio of 0 g / L and ultrasonically disperse for 30 minutes to obtain an antibacterial liquid, and then use a spraying process to evenly disperse it on the surface of the glass product. Finally, heat treatment and drying at 100° C. for 30 minutes to obtain the desired glass.

[0035] The effect of glass surface coating on Staphylococcus aureus ( S. aureus ) inhibition of biofilm. From figure 2 and image 3 It can be seen that when the proportion is 0 g / l, the glass surface coating without antibacterial agent has a rough surface, unevenness, and a large amount of bacteria grow.

Embodiment 3

[0037] The functional glass was prepared by the method of Example 2. The difference is that the ratio of catalyst to dispersant is 0.3 g / L.

[0038] The effect of glass surface coating on Staphylococcus aureus ( S. aureus ) inhibition of biofilm. From Figure 4 and Figure 5It can be seen that when the proportion is 0.3 g / L, the antibacterial coating of glass has a very smooth surface. This is because the inorganic silicon liquid has good fluidity and can penetrate into the micropores on the surface of the substrate. The two-dimensional and three-dimensional networks formed by its solidification can evenly fix the catalyst particles on the glass surface, which is beneficial to antifouling and antibacterial. Therefore, only a small number of bacteria exist on its surface. This shows that proper control of the ratio of antibacterial liquid can not only improve the antibacterial performance, but also improve the surface finish of the material.

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Abstract

The invention relates to a preparation method and application of an antimicrobial liquid. The preparation method comprises the following steps: mixing 0.2-0.4 gram of charge-transfer catalyst (mass/gram) with every liter of inorganic silicon liquid (volume/liter), and carrying out ultrasonic dispersion for 15-30 minutes to obtain the antimicrobial liquid. The application method comprises the following steps: evenly dispersing the antimicrobial liquid on the surface of a glass, marble, ceramic tile or ceramic construction material or a daily article prepared from glass, ceramic or marble by an impregnation-dip coating film formation, brushing or spraying technique; and finally, carrying out low-temperature heat treatment at 100-300 DEG C for 15-30 minutes to obtain the antimicrobial function construction material or daily article. The invention has obvious killing effects on Staphylococcus aureus and Escherichia coli, and adopts the novel antimicrobial mechanism of no need of light and water; the invention has the advantages of small use amount, low-temperature treatment, low energy consumption, low cost, simple fixing technique and wide application range, and is easy for popularization and convenient to operate; and the antimicrobial liquid has the advantages of no toxicity, no stimulation and delicate fragrance.

Description

technical field [0001] The invention relates to an antibacterial liquid and its application method, in particular to an antibacterial liquid containing a charge-transporting catalyst and its application method in antibacterial functional building materials and sanitary products. Background technique [0002] Antibacterial glass not only has excellent antibacterial performance, but also has infrared radiation performance. As a green and healthy antibacterial health glass material, it can be widely used in construction, utensils, packaging and other fields. With the enhancement of people's quality of life and environmental awareness, the application field and production and sales market of antibacterial glass will expand day by day, with broad development prospects. [0003] However, there are few reports on antibacterial glass and its products at present. Among them, the Chinese patent document (application number 03115246.5) discloses coating the outer surface of a glass con...

Claims

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Application Information

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IPC IPC(8): A01N59/16A01N25/30A01P1/00C04B41/85C04B41/50C03C17/23
Inventor 梁岩方孝贤童国秀周顺莉
Owner 方孝贤
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