KR100223683B1 - Antibacterial tail - Google Patents

Abstract

The present invention relates to an antimicrobial tile, and in particular, titanium oxide and nitric acid compounds are properly mixed with an antimicrobial material, and a certain amount of the composition is added to a general raw material of a tile, that is, a base of a tile (powder), thereby preparing a base for antimicrobial tiles. The antimicrobial effect can be obtained from the conventional tiles by forming and firing the antimicrobial tile.

Description

Antimicrobial tiles

The present invention relates to a tile, and more particularly, to an antimicrobial tile base and antimicrobial tile, in which titanium oxide and nitrate are mixed in an appropriate ratio as an antimicrobial material and added to a general tile base.

Generally, tiles are divided into oil-based tiles and oil-free tiles. The oil-based tiles have a smooth surface by glazing the surface, and the oil-free tile has a rough surface without glazing.

Most of the interior tiles currently used are made of oil-treated tiles with glazed surfaces, but are widely used when applied to floors using indoor water, and have no antibacterial activity against bacteria.

Therefore, in order to prevent slippage or the like, it is necessary to treat the surface of the tile without slipping. However, if the glazing is not so slippery, bacterial contamination due to the attachment of various bacteria to the tile becomes a significant problem.

On the other hand, most of the currently produced glaze-free stone tiles are used as exterior walls and floors of sidewalks and buildings. In particular, the reason why it is widely used in public facilities and sidewalks is that it provides the texture and appearance of natural free stones. However, when applied to the floor of the public toilet or bath floor, such as a very good effect on the prevention of slip, but there is no antimicrobial effect against various bacteria, so it becomes a pollution source of various pathogens, which is a significant problem in health and hygiene. Moreover, it is not possible to use it because it can cause more serious problems in facilities used by hospitals and the general public, and especially public facilities used by the elderly.

Therefore, by developing such oil-free stone tiles that prevent such slippage and antibacterial effects against various germs, supplement the disadvantages of the past, and expand the scope of application so that they can be used in places that are not suitable for using non-stone stone tiles. In view of the development of functional building materials, research in this area should be actively conducted.

The present invention aims to solve the above problems and to provide an antimicrobial tile having the antimicrobial tile itself in order to be a sanitary safe facility.

In addition, the present invention has another object to provide a base for the antimicrobial tile used when manufacturing the antimicrobial tile.

1 is a graph showing the results of the antimicrobial test against E. coli in the antimicrobial and non-stone tiles prepared according to the present invention.

Figure 2 is a graph showing the results of the antimicrobial experiments against Pseudomonas aeruginosa in the antimicrobial oil-free stone tiles and conventional oil-free stone tiles produced by the present invention.

Figure 3 is a graph showing the results of the antimicrobial test against Pseudomonas aeruginosa in the antimicrobial free stone tiles and conventional non-free stone tiles produced by the present invention.

In order to achieve the above object, the present invention is 94.8-99.7% by weight of titanium oxide, 0.1-5% by weight of silver nitrate, 0.1-5% by weight of copper nitrate and 0.1-5% by weight of zinc nitrate, titanium oxide 40- Antibiotic consisting of 60% by weight and 40-60% by weight nitrate, 40-60% by weight titanium oxide and 40-60% by weight copper nitrate, 40-60% by weight titanium oxide and 40-60 zinc nitrate Antibacterial material consisting of 20% by weight of titanium oxide, 20-40% by weight of titanium oxide and 20-40% by weight of nitrate, 20-40% by weight of titanium oxide, 20-40% by weight of titanium oxide and 20-40 weight of copper nitrate Antibiotic consisting of 20% by weight and 20-40% by weight of zinc nitrate, 15-40% by weight of titanium oxide and 15-40% by weight of silver nitrate, 15-40% by weight of copper nitrate and 15-40% by weight of zinc nitrate Antibacterial prepared by adding 0.5 to 2.5% by weight of one of the antimicrobial material optionally selected from among the base weight of the base material Characterized by the base for the tile and the antimicrobial tile made using this.

Preferably, 45-55% by weight of titanium oxide and 45-55% by weight of nitric acid are characterized by having an antibacterial tile with an antimicrobial substance added thereto.

Also preferably, the present invention also includes an antibacterial tile having an antimicrobial substance composed of 30-35% by weight of titanium oxide, 30-35% by weight of silver nitrate, and 30-35% by weight of copper nitrate.

Moreover, the thing for antimicrobial tiles which added the antimicrobial substance which consists of 20-25 weight% of titanium oxide, 20-30 weight% of silver nitrate, 20-30 weight% of copper nitrate, and 20-30 weight% of zinc nitrate is also preferable.

Hereinafter, embodiments of the present invention will be described in more detail.

As a result of analyzing the chemical composition of the existing non-oil-free tile material currently produced, it was analyzed to have the chemical composition shown in Table 1. In general, 70.13% by weight of silicon oxide, 20.16% by weight of aluminum oxide, and a relatively small percentage of other materials are analyzed. For reference, thermal analysis, XRF, and the like were used for analysis of the non-stone stone material.

TABLE 1

The process of manufacturing a conventional oil-free stone tile is as follows,

That is, after mixing the basic tile raw material with the composition as shown in Table 1 above, pulverizing, the ground raw material is dried in a spray dryer to obtain a base (powder raw material). Then, the substrate is press-molded at a pressure of 150-250kg / cm 2 in a compression molding machine, and then calcined to a temperature of 1270 ° C. in a kiln to produce a commercially available oil-free stone tile.

The present invention adds a certain amount of antimicrobial material suitably blended into the composition raw materials (hereinafter referred to as basic tile holder) of the general non-free stone tile shown in Table 1 to make the base for the antimicrobial tile, the same process step It is to produce antibacterial oil free stone tiles.

For reference, the base for the antimicrobial tile obtained by the present invention can be applied to the oil-based tile and can produce the same antimicrobial effect as in the non-oil tile.

Table 2 shows the mixing ratio of the various antibacterial materials according to the embodiment of the present invention.

TABLE 2

Mixed antibacterial substance and mixing ratio

Here, each of the examples is arbitrarily expressed as T, M, U, N, J, O, G, and the mixing ratio of each of the antimicrobial substances is expressed in weight percent based on 100 of the total weight of the antimicrobial substances.

Table 3 shows the addition of a certain amount of the antimicrobial material consisting of the mixing ratio shown in Table 2 to the base tile holder, the addition amount was increased by 0.5 to 0.5-2.5% by weight relative to the content of the base tile holder 100.

TABLE 3

Addition amount by antibacterial substance

For reference, Example M is an antimicrobial material, such as titanium nitride and silver nitrate in a ratio of 50:50, for example, and the mixed antimicrobial material 0.5, 1.0, 1.5, 2.0 or It is a method of adding 2.5 weight%.

The antimicrobial material of Example J is mixed with titanium oxide: silver nitrate: copper nitrate, for example, in a ratio of 33.33 wt%: 33.33 wt%: 33.33 wt%, and the mixed antimicrobial material is 0.5 to the content of the base tile. , 1.0, 1.5, 2.0 or 2.5% by weight is added.

Example G is an antimicrobial material, for example, titanium oxide: silver nitrate: copper nitrate: zinc nitrate for example in a ratio of 25: 25: 25: 25, and the mixed antibacterial material content of the basic tile composition 0.5, 1.0, 1.5, 2.0 and 2.5% respectively.

As described above, by adding the mixed antimicrobial substance as in the above embodiment to the base tile, the antimicrobial tile is sufficiently mixed, and the antimicrobial tile is press-molded at a pressure of 150-250kg / ㎠ using a press. And by firing to 1270 ℃ using a kiln (Kiln) can be produced antimicrobial tiles.

According to the antimicrobial experiments on the antimicrobial oil free stone tiles and general oil free stone tiles produced by the above embodiments, it can be seen that the antimicrobial oil free stone tiles produced by the present invention have excellent antibacterial effects.

1 to 3 are experimental data conducted to prove the antimicrobial effect. Experimental strains used for antibacterial experiments were carried out against three types of Escherichia coli (大腸菌, E.coil, JM 109), P. aeruginosa (化膿 菌, Staphylococcus aureus, KCTC 2199) and Pseudomonas aeruginosa (KCTC 1750). In the experiment, each strain (lord without any resistance to antibiotics) was pre-cultured in each optimum medium and then cultured in 10 ml of medium. The tile sample is sterilized before the antimicrobial experiment, the OD ₆₀₀ is measured and diluted with a medium so that the absorbance is 0.002. Then, 0.05 ml (50 μl) of the antimicrobial tile obtained by the present invention and the surface of the conventional tile are evenly applied. After 12 hours and 24 hours storage at 37 ℃ and washed with 10ml sterile water and then diluted 0.05ml (50μl) of diluted bacteria solution in agar medium and stored for 2 days at 37 ℃ to produce a viable cell number with colony (colony) water Measurement was made for each. As a result, good antibacterial effect was observed in E. coli in all antimicrobial free stone tile samples.

Figure 1 is an antimicrobial oil-free stone prepared by mixing the antimicrobial material mixed by the embodiment of the present invention in 0.5 weight%, 1% by weight, 1.5% by weight, 2.0% by weight, 2.5% by weight relative to the content of the base tile The results of antimicrobial experiments against E. coli in tiles and conventional oil free stone tiles are shown. The antimicrobial material (T, M, U, N, J, O, G) mixed by the embodiment of the present invention, despite the change in the amount of addition of the antimicrobial substance as shown in Table 3 Although the number of clonies is hardly shown, the conventional tile shows 5000 after 12 hours and 1100 after 24 hours.

For reference, the amount of antimicrobial added was set at 0.5-2.5% by weight because the most desirable result could be obtained at this weight%.

Figure 2 shows different patterns for Pseudomonas aeruginosa according to the type of antimicrobial substance mixed with the base tile, and the amount of the mixed antimicrobial substance. In Examples G, J, M, and U, the Pseudomonas aeruginosa is relatively different. Less colonies are shown, and in Examples N, O, and T, the number of colonies is shown to be higher or similar to those of the conventional tiles. That is, in the non-free stone tiles of Examples G, J, M, and U, the number of colonies appears at 50 or less at an addition ratio of 0.5% to 2.5% by weight, but in the conventional tile, about 200 after 12 hours and about 10 after 24 hours It shows the appearance.

On the other hand, in Example O (antibacterial material is composed of 20-40% by weight of titanium oxide, 20-40% by weight of copper nitrate, 20-40% by weight of zinc nitrate), less P. aeruginosa appears when the addition ratio is 1.0 and 2.5% by weight. You can see.

Figure 3 shows a different pattern for Pseudomonas aeruginosa according to the type of antimicrobial material and the amount of the mixed antimicrobial material is mixed, in Example G, M, O, T relatively less colony of P. aeruginosa irrespective of the addition amount , Examples J, N, and U show more or more similar appearance in conventional tiles.

On the other hand, in Example N, when the addition amount of the antimicrobial material is 0.5% by weight and 2.5% by weight based on the base tile, there is almost no Pseudomonas aeruginosa, and in Example J, the amount of the antimicrobial material is 0.5% by weight relative to the base tile. In the case of adding at 1% by weight, and Example J, on the other hand, it is shown that Pseudomonas aeruginosa is hardly seen when the amount of the antimicrobial substance is added at 0.5% by weight and 1% by weight with respect to the base tile.

Thus, by varying the amount of the antimicrobial material mixed with the embodiment and the mixed antimicrobial material to the base tile base can be produced antimicrobial excellent antimicrobial tile.

On the basis of the above drawings, when selecting a suitable antimicrobial material as in the embodiment of the present invention, when combined with a general free masonry tile, it can be concluded that it is possible to produce a non-free stone tile having excellent antibacterial properties.

Since the antimicrobial tile according to the present invention has an excellent antimicrobial effect against various bacteria, it can overcome the problem of bacterial contamination.

In addition, since the antimicrobial free stone tile has an excellent anti-slip effect, it is possible to replace the place where the glazed tile is conventionally used due to a bacterial problem.

The present invention, by adding an antibacterial material to the possession of oil-free stone tile, by developing heat-free stone tile having antibacterial properties through heat treatment, it is possible to solve the problems caused by the limitation of the place of use of conventional oil-free stone tile has an increase in demand Can come.

In addition, the demand for antibacterial and anti-fog building materials is expected to increase in terms of social welfare and the increase in facilities for the elderly and environmental hygiene, and the improvement of the living environment and the risk of bacteria in facilities for the elderly and others. It is expected to make a significant contribution in terms of protection from protection.

Claims (14)

The antimicrobial material is titanium oxide and also silver nitrate, which comprises at least one material selected from copper nitrate and zinc nitrate, and the titanium oxide is 15-99.7% based on the total weight of the antimicrobial material, and the selected material is the remaining weight. %, Wherein the antimicrobial substance is 0.5 to 2.5% by weight relative to the total weight of the base material of the base for the antimicrobial tile. The method of claim 1, The antimicrobial material is 94.8-99.7% by weight of titanium oxide, 01-5% by weight of nitrate, 0.1-5% by weight of copper nitrate and 0.1-5% by weight of zinc nitrate. The method of claim 1, The antimicrobial substance is characterized in that the antimicrobial tile 40-60% by weight of titanium oxide and 40-60% by weight of copper nitrate. The method of claim 1, Possession of the antimicrobial tile, characterized in that the antimicrobial material is composed of 40-60% by weight of titanium oxide 40-60% by weight zinc nitrate. The method of claim 1, The antimicrobial substance is 40-60% by weight of titanium oxide and 40-60% by weight of nitric acid. The method of claim 1, Wherein the antimicrobial material is 20-40% by weight, 20-40% by weight of nitric acid and 20-49% by weight of zinc nitrate. The method of claim 1, The antimicrobial material is 20-40% by weight of titanium oxide, 20-40% by weight of copper nitrate and 20-40% by weight of zinc nitrate. The method of claim 1, The antimicrobial substance is 15-40% by weight of titanium oxide, 15-40% by weight of nitrate, 15-40% by weight of copper nitrate and 15-40% by weight of zinc nitrate. The method of claim 1, The antimicrobial substance is characterized in that 45-55% by weight of titanium oxide and 45-55% by weight of nitric acid. The method of claim 1, The antimicrobial substance is 30-35% by weight of titanium oxide, 30-35% by weight of silver nitrate and 30-35% by weight of copper nitrate. The method of claim 1, The antimicrobial substance is 20-30% by weight of titanium oxide, 20-30% by weight of nitric acid, 20-30% by weight of copper nitrate and 20-30% by weight of zinc nitrate. The method of claim 1, The antimicrobial agent is characterized in that the antimicrobial tile is added at 1.5-2.5% by weight based on the total weight of the base tile. The method of claim 1, The antimicrobial agent is characterized in that the antimicrobial material is added at 1.0-2.5% by weight relative to the total weight of the base tile. The method of claim 3, The antimicrobial tile is characterized in that the antimicrobial material is added at 0.5-1.5% by weight relative to the total weight of the base tile.

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