KR102582133B1 - Multi-functional glass coating film, preparing method of the same, and electric home appliance including the same - Google Patents

Abstract

The present invention relates to a multi-functional glass coating film manufactured by a non-sintering deposition method, a manufacturing method thereof, and a home appliance including the multi-functional glass coating film. According to the method for manufacturing a multi-functional glass coating film according to the present invention, it is possible to manufacture a multi-functional glass coating film with additional functions such as water repellency and hydrophilicity in addition to antibacterial properties, and can be applied to various polymer substrates other than glass substrates.

Description

Multifunctional glass coating film, manufacturing method thereof, and home appliances including the same {MULTI-FUNCTIONAL GLASS COATING FILM, PREPARING METHOD OF THE SAME, AND ELECTRIC HOME APPLIANCE INCLUDING THE SAME}

The present invention relates to a multi-functional glass coating film, a method of manufacturing the same, and a home appliance including the same.

Microorganisms such as germs, fungi, and bacteria are omnipresent in our living spaces, such as sinks, refrigerators, shelves, tables, ovens, or washing machines. If these microorganisms enter our bodies, they can cause life-threatening infections, so it is necessary to solve the problem of hygiene by suppressing the creation and propagation of bacteria and mold from home appliances.

The need for providing antibacterial functions to enhance hygiene by suppressing bacteria and mold in home appliances, especially kitchen appliances, is increasing.

Republic of Korea Patent Application Publication No. 10-2018-0064557, a prior invention regarding glass with antibacterial properties, relates to “coated antibacterial chemically strengthened glass and method of manufacturing the same,” a chemical strengthening process for strengthening the strength of glass. During ion exchange, the antibacterial properties of silver (Ag) were secured by applying compressive stress to the glass surface and simultaneously containing silver (Ag) through an ion exchange reaction using potassium nitrate containing silver nitrate.

However, the glass in the above prior invention is applied to products in hospitals, laboratories, and facilities handling biological materials, and has limitations in its application to home appliances. Since it imparts an antibacterial factor to the glass surface through an ion exchange reaction, it is not safe for dissolution. This is insufficient, and the color and transparency of the glass are not considered, so there is a problem that it cannot be applied to glass shelves and windows that require transparency.

In addition, since the above prior invention deposits the coating film at a high firing temperature, it cannot be applied to various substrates such as glass substrates and polymer substrates that are susceptible to heat and deform at the firing temperature, and the glass coating film has no other functions other than antibacterial properties. There is also a limitation in that it cannot be granted.

Therefore, it can be applied to glass substrates and polymer substrates of various home appliances, including kitchen appliances such as refrigerators, ovens, and microwaves, and interior appliances such as shelves of home and office equipment, and the safety of elution of antibacterial factors is ensured. There is still a need to develop a multi-functional glass coating film that is excellent, has transparency and hardness, and has other functions in addition to antibacterial properties.

Republic of Korea Patent Application Publication No. 10-2018-0064557

The purpose of the present invention is to provide a multi-functional glass coating film that has antibacterial properties and additional other functions in order to improve the hygienic problem of bacteria and mold growing in home appliances, and a method of manufacturing the same.

The purpose of the present invention is to provide an antibacterial glass composition that exhibits antibacterial activity while exhibiting excellent safety against heavy metal elution, a multi-functional antibacterial glass coating film using the same, and a method for manufacturing the same.

The purpose of the present invention is to provide a multi-functional antibacterial glass coating film that can secure the characteristics of existing glass, such as transparency, while exhibiting antibacterial activity, and a method of manufacturing the same.

The purpose of the present invention is to provide a multi-functional glass coating film that can be applied to substrates of various materials such as glass substrates and substrates containing polymer, a method of manufacturing the same, and a home appliance including the multi-functional glass coating film. do.

The objects of the present invention are not limited to the objects mentioned above, and other objects and advantages of the present invention that are not mentioned can be understood by the following description and will be more clearly understood by the examples of the present invention. Additionally, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof indicated in the patent claims.

In order to solve the above-mentioned technical problem, (a) providing an antibacterial glass composition; (b) melting and cooling the antibacterial glass composition to prepare antibacterial glass cullet, and pulverizing the glass cullet to prepare antibacterial glass powder; and (c) coating the antibacterial glass powder on a substrate using a non-sintering deposition method to form an antibacterial glass coating film with a thickness of 1 to 50㎛.

The antibacterial glass composition for producing the multi-functional glass coating film according to the present invention contains 20 to 40% by weight of SiO ₂ ; B ₂ O ₃ 1.5-10% by weight; Na ₂ O 2-10% by weight; K ₂ O 2-15% by weight; ZnO 20-40% by weight; CaO 1-5% by weight; CuO 0-5% by weight; and Fe ₂ O ₃ 0 to 3% by weight; but is not limited thereto.

The multi-functional glass coating film manufactured by the manufacturing method of the multi-functional glass coating film according to the present invention has antibacterial activity of more than 99.99% against one or more types of microorganisms among Staphylococcus aureus and Escherichia coli, and has one of the functions of water-repellent and hydrophilic properties. It may additionally have .

In particular, the non-sintering deposition method of the manufacturing method of the multi-functional glass coating film according to the present invention is one of aerosol deposition (AD), cold spray deposition, and atmospheric plasma spray (APS) deposition. It can be.

According to the method for manufacturing a multi-functional glass coating film according to the present invention, since a non-sintering deposition method is used, the multi-functional glass coating film can be coated on glass substrates, polymer substrates, etc. that undergo thermal deformation at high sintering temperatures.

In the method of manufacturing a multi-functional glass coating film according to the present invention, in order to provide water repellency, a mixture of at least one of Teflon and cerium dioxide (CeO ₂ ) can be coated using a non-sintering deposition method.

In the method of manufacturing a multi-functional glass coating film according to the present invention, in order to impart hydrophilicity, a mixture of titanium dioxide (TiO ₂ ) can be coated using a non-sintering deposition method.

In the method of manufacturing a multi-functional glass coating film according to the present invention, in order to increase coating properties and coating yield, the glass powder may have a particle size of 1 to 10 ㎛ and a spherical shape.

In particular, the non-sintering deposition method of the manufacturing method of the multi-functional glass coating film according to the present invention is one of aerosol deposition (AD), cold spray deposition, and atmospheric plasma spray (APS) deposition. It can be.

The glass coating film manufactured according to the method for manufacturing a multi-functional glass coating film according to the present invention has excellent transparency and may have a transmittance of 70% or more.

The multi-functional glass coating film according to the present invention has the effect of suppressing the growth of bacteria and mold in home appliances, providing excellent antibacterial activity and stability, as well as excellent safety of heavy metal elution.

In addition, the multi-functional glass coating film according to the present invention can sufficiently secure glass properties and, in particular, can exhibit excellent transparency with a transmittance of 70% or more.

In addition, since the multi-functional glass coating film is coated using a non-sintering deposition method, it can be applied in a variety of ways to both glass substrates and polymer substrates that are deformed above a certain temperature, and materials showing different additional functions can be coated at the same time, providing antibacterial properties. In addition, it may have additional functions such as water repellency and hydrophilicity.

In particular, in the present invention, when applying a multi-functional glass coating film on a polymer substrate, excellent surface hardness can be secured in addition to the above effects.

The effects of the present specification are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

In addition to the above-described effects, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

Figure 1 is a photograph showing a state in which a glass coating film using an antibacterial glass composition according to an aspect of the present invention is applied to a glass substrate.
Figure 2 is a photograph showing a glass substrate to which a multi-functional glass coating film with antibacterial and water-repellent properties according to Example 3 of the present invention was applied from the side and top surfaces.
Figure 3 is a photograph taken from the top of a glass substrate to which a multi-functional glass coating film with antibacterial and hydrophilic properties according to Example 4 of the present invention was applied.

The above-mentioned objects, features, and advantages will be described in detail later with reference to the attached drawings, so that those skilled in the art will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings.

As used herein, singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “consists of” or “comprises” should not necessarily be construed as including all of the various components described in the specification, and some of the components may not be included, or additional components may be included. It should be interpreted as being able to include more elements.

<Manufacturing method of composite functional glass coating film>

Hereinafter, the manufacturing method of the multi-functional glass coating film according to the present invention will be described in detail.

The method for producing an antibacterial glass coating film according to the present invention includes the steps of (a) providing an antibacterial glass composition; Melting and cooling the antibacterial glass composition to prepare an antibacterial glass cullet, and pulverizing the glass cullet to prepare an antibacterial glass powder; and (c) coating the antibacterial glass powder on a substrate using a non-sintering deposition method to form an antibacterial glass coating film with a thickness of 1 to 50 μm.

The antibacterial glass coating film according to the present invention has an antibacterial activity against microorganisms of 99.99% or more, and the microorganisms may be one or more types of Staphylococcus aureus and Escherichia coli.

In addition, the glass coating film manufactured according to the method for manufacturing an antibacterial glass coating film according to the present invention can have excellent transparency with a transmittance of 70% or more.

To manufacture the antibacterial glass coating film according to the present invention, the antibacterial glass composition used includes 20 to 40% by weight of SiO ₂ ; B ₂ O ₃ 1.5-10% by weight; Na ₂ O 2-10% by weight; K ₂ O 2-15% by weight; ZnO 20-40% by weight; CaO 1-5% by weight; CuO 0-5% by weight; and 0 to 3% by weight of Fe ₂ O ₃ , but is not limited thereto.

When forming the antibacterial glass powder according to the present invention into an antibacterial glass coating film, the particle size and shape of the antibacterial glass powder are important to ensure excellent coating properties and high yield.

Specifically, the particle size of the antibacterial glass powder according to the present invention is preferably 1 to 10 ㎛, and the shape of the powder may be various, but is preferably spherical to increase coating yield.

The non-sintering deposition method used in step (c) of the method for producing an antibacterial glass coating film according to the present invention can be adopted without limitation as long as it is a physical vapor deposition method without a sintering process, for example, aerosol deposition (AD), It may be selected from deposition methods such as cold spray deposition and atmospheric plasma spray (APS) deposition, but is not limited thereto.

The substrate may be a variety of substrates that correspond to part or all of the home appliance, for example, a glass substrate or a polymer substrate. In particular, it can also be applied to a polymer substrate or a glass substrate that can be deformed above a certain temperature. there is.

In the method of manufacturing an antibacterial glass coating film according to the present invention, the polymer substrate may be a substrate containing a polymer that can undergo thermal deformation at the firing temperature of the glass coating film, such as polycarbonate.

When the antibacterial glass coating film according to the present invention is formed on a polymer substrate, surface hardness can be secured, and preferably, it can have a surface hardness of 3H (H is the hardness unit of the JIS standard) or more.

In addition, according to the method for manufacturing an antibacterial glass coating film according to the present invention, it is possible to manufacture a multi-functional glass coating film that has additional functions such as water repellency and hydrophilicity in addition to antibacterial properties, and by using the non-sintering deposition method in the present invention, other than antibacterial properties This can be implemented because it can be coated simultaneously with materials with other functions.

In order to manufacture a multi-functional glass coating film with additional functions in addition to antibacterial properties to the antibacterial glass coating film according to the present invention, in step (c), the antibacterial glass powder and a material capable of implementing various additional functions are simultaneously coated using a non-sintering deposition method. It can be manufactured.

For example, in the method of manufacturing a multi-functional glass coating film according to the present invention, a mixture of antibacterial glass powder and at least one of Teflon and cerium dioxide (CeO ₂ ), which are materials for imparting water repellency, is mixed using a non-sintering deposition method. By coating, a multi-functional glass coating film with antibacterial and water-repellent properties can be manufactured.

In addition, in the method of manufacturing a composite functional glass coating film according to the present invention, a mixture of antibacterial glass powder and titanium dioxide (TiO ₂ ), a material for imparting hydrophilic properties, is coated using a non-sintering deposition method to form a composite with antibacterial and hydrophilic properties. A functional glass coating film can be manufactured.

Hereinafter, the role and content of each component of the antibacterial glass composition used in the manufacturing method of the multi-functional glass coating film according to the present invention will be described in detail.

As described above, the antibacterial glass composition used in the present invention contains 20 to 40% by weight of SiO ₂ ; B ₂ O ₃ 1.5-10% by weight; Na ₂ O 2-10% by weight; K ₂ O 2-15% by weight; ZnO 20-40% by weight; and CaO 1 to 5% by weight, but is not limited thereto.

In addition, the antibacterial glass composition used in the present invention contains 0 to 5% by weight of CuO; and Fe ₂ O ₃ 0-3% by weight; It may further include one or more of the following.

SiO ₂ is a network-forming oxide and is an essential glass former for forming glass. In terms of the structure of glass, it is a key ingredient that acts as a framework. If SiO ₂ is included in more than an appropriate amount, the viscosity increases when the glass is melted, which reduces workability and yield during the cooling process.

Therefore, SiO ₂ is preferably added in an amount of 20 to 40% by weight of the total weight of the antibacterial glass composition according to the present invention. If the amount of SiO ₂ added is less than 20% by weight, crystallization may occur when the glass is melted, which may result in the inability to form stable glass. On the other hand, if the amount of SiO ₂ added exceeds 40% by weight, it is advantageous for vitrification, but the melting temperature increases and the vitrification temperature (Tg) increases, resulting in a transparent glass film during the glass coating film formation process using glass powder. As the firing temperature for securing increases, a problem may arise that it is impossible to apply the heat strengthening process simultaneously.

B ₂ O ₃ is a representative network-forming oxide and, together with SiO ₂ , is a key ingredient that enables sufficient vitrification. B ₂ O ₃ has a low melting point and is used to lower the eutectic point of the melt. In addition, B ₂ O ₃ helps create homogeneous glass by increasing the solubility of rigid components (Al ₂ O ₃ , CuO, etc.) during melting for vitrification. However, if B ₂ O ₃ is added above a certain level, a problem may occur that weakens the bonding structure of the glass and reduces water resistance, etc.

For this purpose, B ₂ O ₃ is preferably added in an amount of 1.5 to 10% by weight of the total weight of the antibacterial glass composition according to the present invention. If B ₂ O ₃ is added in an amount of less than 1.5% by weight, the vitrification area may be exceeded due to a lack of flux, and non-melting may occur. Conversely, when B ₂ O ₃ exceeds 10% by weight, water resistance may be reduced due to the structural properties of element B within the network-forming structure.

Alkali oxides such as Na ₂ O and K ₂ O are oxides that serve as network modifiers that form non-crosslinking bonds within the glass composition. These components cannot be vitrified alone, but vitrification becomes possible when mixed with a network former such as SiO ₂ and B ₂ O ₃ in a certain ratio. If only one of the above components is included in the glass composition, the durability of the glass may be weakened within the region where vitrification is possible. However, when two or more ingredients are included in the glass composition, the durability of the glass may improve again depending on the ratio. This is called the mixed alkali effect. Therefore, alkali oxides such as Na ₂ O and K ₂ O improve antibacterial activity by taking advantage of the fact that they occupy the modified oxide sites first in the glass.

Therefore, with respect to the total weight of the antibacterial glass composition according to the present invention, Na ₂ O is preferably added in an amount of 2 to 10% by weight, and K ₂ O is preferably added in an amount of 2 to 15% by weight. When Na ₂ O and K ₂ O are added in amounts of less than 2% by weight, the phenomenon of formation of unmelted material due to escaping the vitrification zone may occur due to insufficient flux. On the contrary, when Na ₂ O and K ₂ O are added in large amounts exceeding 10% by weight and 15% by weight, alkali ions are easily replaced with H ₃ O ⁺ ions of water according to the basic elution mechanism of glass, and dissolution becomes worse. Deterioration may occur.

ZnO is substituted and covalently bonded with a part of the network-forming oxide, performing both the role of a network-forming oxide and a modified oxide, and is an ingredient that lowers the vitrification temperature. In addition, ZnO is an ingredient that exhibits antibacterial effects.

ZnO is an intermediate oxide, and in order to participate in the network-forming structure in glass, its atomic radius must be small and its electronegativity must be large, so the difference with oxygen must be small. These intermediate oxides have a larger atomic radius than the typical network-forming oxides Si, P, and B, and their low electronegativity makes it difficult to form glass on their own. However, in situations where the network-forming oxide is present, it substitutes for the network-forming oxide and plays its role. It refers to the ingredients. Below a certain content, ZnO acts only as a modified oxide, but above a certain content, it forms covalent bonds, drastically improving durability. Here, the certain content is determined by the content of the network-forming oxide and the modifying oxide.

Therefore, ZnO is preferably added in an amount of 20 to 40% by weight of the total weight of the antibacterial glass composition according to the present invention. When ZnO is added in less than 20% by weight, there is a problem in that sufficient antibacterial activity is not achieved because the absolute amount of the substance that exhibits antibacterial activity is insufficient. On the other hand, when ZnO is added in excess of 40% by weight, it does not exist in an ionic state in the glass homogeneously, and crystals are partially formed to escape the vitrification area, resulting in opalescence and heterogeneity in which transparent glass is mixed. This phenomenon occurs, and as a result, the vitrification formation area becomes narrow, resulting in the problem that stable glass cannot be manufactured.

Alkaline earth oxides such as CaO are basically oxides that function as non-crosslinking modified oxides in glass. Vitrification is impossible alone, but vitrification becomes possible when mixed with a network former such as SiO ₂ and B ₂ O ₃ in a certain ratio.

Unlike alkali oxide, alkaline earth oxide such as CaO has a +2 charge and must be replaced with two water molecule ions, making ion exchange relatively difficult, so it is sometimes used as a durability enhancement element. Therefore, alkaline earth oxides such as CaO are used for the same purpose as alkali oxides, which indirectly contribute structurally to developing water-insoluble and antibacterial properties by occupying modified oxide sites and having strong durability among modified oxides.

CaO is preferably added in an amount of 1 to 5% by weight of the total weight of the antibacterial glass composition according to the present invention. If CaO is less than 1% by weight, the structure cannot be strengthened at the modified oxide site, so a decrease in water resistance that cannot prevent alkali elution may occur. On the other hand, if CaO exceeds 5% by weight, alkaline earth oxide, which is a substance that melts at high temperatures, is not sufficiently melted and thus escapes the vitrification region, which may result in the formation of unmelted material.

CuO and Fe ₂ O ₃ are ingredients that allow glass to maximize its own antibacterial effect. In addition, CuO and Fe ₂ O ₃ play a role in improving the adhesion of the glass coating film by causing a chemical bond between the substrate and the glass when glass is used as a coating material on a low-carbon steel substrate. However, when CuO and Fe ₂ O ₃ are added in excessive amounts, problems of crystallization occur and the color of the glass becomes black, so it is preferable to add them in small amounts to ensure transparency.

From this point of view, the antibacterial glass composition according to the present invention may further include one or more of CuO and Fe ₂ O ₃ , where CuO is 0 to 5% by weight and Fe ₂ O ₃ is 0 to 3% by weight. It is preferable that it is below.

Hereinafter, the configuration and operation of the present invention will be described in more detail through preferred embodiments of the present invention. However, this is presented as a preferred example of the present invention and should not be construed as limiting the present invention in any way.

Contents not described here can be technically inferred by those skilled in the art, so description thereof will be omitted.

<Example>

Example 1

SiO ₂ 35% by weight; B ₂ O ₃ 2.5% by weight; Na ₂ O 9.6% by weight; K ₂ O 9.6% by weight; ZnO 39% by weight; and CaO 4.3% by weight; raw materials for an antibacterial glass composition containing were prepared and thoroughly mixed. The mixed raw material composition was melted at a temperature of 1200°C in an electric furnace and then quenched on a quenching roller to obtain antibacterial glass cullet. The antibacterial glass cullet obtained through the above process was dry-ground with a ball mill, and finally, antibacterial glass powder with an average particle size of 5㎛ and a spherical shape was obtained. The glass powder was coated on a glass substrate using an aerosol deposition method to form an antibacterial glass coating film with a thickness of 30 μm.

Example 2

Example 2 formed an antibacterial glass coating film in the same manner as Example 1, except that the composition and content of the glass composition were different as shown in Table 1 below, and the coating film was formed by low-temperature spray deposition rather than aerosol deposition. There is a difference in that respect.

Example 3

Example 3 formed an antibacterial glass coating film in the same manner as Example 1, except that a mixture of antibacterial glass powder and Teflon was coated on a glass substrate.

The glass coating film prepared in Example 3 was a glass coating film with combined antibacterial and water-repellent functions.

A photograph of a glass substrate to which a glass coating film having the combined antibacterial and water-repellent functions of Example 3 was applied is shown in Figure 2. From Figure 2, it can be seen that the coated glass film sufficiently exhibits water repellency.

Example 4

Example 4 formed an antibacterial glass coating film in the same manner as Example 1, except that a mixture of antibacterial glass powder and titanium dioxide was coated on a glass substrate.

The glass coating film prepared in Example 4 was a glass coating film with combined antibacterial and hydrophilic functions.

A photograph of the glass substrate to which the glass coating film having the combined antibacterial and hydrophilic functions of Example 4 was applied is shown in Figure 3. From Figure 3, it can be seen that the coated glass film sufficiently exhibits hydrophilicity.

Example 5

Example 5 formed an antibacterial glass coating film in the same manner as Example 1, except that a polycarbonate substrate was used instead of a glass substrate.

In Example 5, since an aerosol deposition method, a type of non-sintering deposition method, was used, a glass coating film was stably formed on the polycarbonate substrate.

Comparative Example 1

Comparative Example 1 formed a glass coating film in the same manner as Example 1, but differed in that the composition and content of the glass composition were different as shown in Table 1 below.

Comparative Example 2

Comparative Example 2 formed a glass coating film in the same manner as Example 1, but differed in that the composition and content of the glass composition were different as shown in Table 1 below.

Comparative Example 3

In Comparative Example 3, a glass coating film was formed on a polycarbonate substrate in the same manner as Example 5, except that the coating film was formed using a sintering process at a temperature of 700°C rather than a non-sintering deposition method.

As a result, unlike Example 5, a stable glass coating film could not be formed, and this was because thermal deformation occurred in the polycarbonate substrate at the sintering process temperature.

From the results of Example 5 and Comparative Example 3, it can be seen that the sintering process, which is a conventional glass coating film coating method, cannot stably form an antibacterial glass coating film on a polymer substrate that is prone to thermal deformation at high temperatures, such as polycarbonate. .

Table 1 below shows the composition and content of the antibacterial glass compositions of Examples 1 to 2 and Comparative Examples 1 to 2.

ingredient Content of ingredients (% by weight) Example 1 Example 2 Comparative Example 1 Comparative Example 2 SiO ₂ 35 35 37 45 B ₂ O ₃ 2.5 2.5 10 2.5 Na ₂ O 9.6 9.6 9.6 9.6 _K2O 9.6 9.6 9.6 9.6 ZnO 39 38 29.5 29 CaO 4.3 4.3 4.3 4.3 CuO - One - - total 100 100 100 100

<Experimental example>

Experimental Example 1

For the specimens prepared in Examples 1 to 2 and Comparative Examples 1 to 2 of the present invention, the light transmittance (transmittance %) was measured with a hazemeter, and the results are shown in Table 2 below.

Experimental Example 2 - Antibacterial activity evaluation test

The specimens of the antibacterial glass coated glass substrates of Examples 1 to 2 and Comparative Examples 1 to 2 of the present invention were tested for antibacterial activity against Staphylococcus aureus and Escherichia coli by an antibacterial standard test (JIS Z 2801, film attachment method). The activity value was evaluated. The results are shown in Table 2 below.

division Example 1 Example 2 Comparative Example 1 Comparative Example 2 Coating film characteristics Transmittance (%) 75 72 55 < 50 antibacterial power
(%) Staphylococcus aureus 99.99 < 99.99 < 99 99 E. coli 99.99 < 99.99 < 99 99

As shown in Table 2, Examples 1 and 2 corresponding to the glass substrate on which the antibacterial glass coating film according to the present invention was formed had a higher transmittance and excellent transparency compared to Comparative Examples 1 and 2, and at the same time, antibacterial activity. You can see that it is very excellent.

Experimental Example 3 - Metal elution test

For the specimens of Examples 1 and 2 of the present invention, metal elution was measured at a temperature of 32 hours and 50° C. according to ASTM C1285, and the measured results are shown in Table 3 below.

Analysis of effluent components (unit: ppm) Si B Na K Ca Zn Cu Ag Example 1 6.7 0.37 20.2 10.7 2.0 0.25 0.00106 0.0002 Example 2 6.9 0.38 17.3 9.2 4.2 0.12 0.00022 0.00018

As can be seen in Table 3, the antibacterial glass coating composition according to the present invention has excellent metal elution safety.

As described above, the present invention has been described with reference to the illustrative embodiments and drawings, but the present invention is not limited by the embodiments and drawings disclosed in the present specification, and can be understood by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that various modifications can be made. In addition, although the operational effects according to the configuration of the present invention were not explicitly described and explained in the above description of the embodiments of the present invention, it is natural that the predictable effects due to the configuration should also be recognized.

Claims (12)

(a) providing an antimicrobial glass composition;
(b) melting and cooling the antibacterial glass composition to prepare antibacterial glass cullet, and pulverizing the glass cullet to prepare antibacterial glass powder; and
(c) coating the antibacterial glass powder on a substrate using a non-sintering deposition method to form an antibacterial glass coating film with a thickness of 1 to 50㎛;
Including,
Has antibacterial activity of more than 99.99% against one or more types of microorganisms among Staphylococcus aureus and E. coli,
Method for manufacturing a multi-functional glass coating film.
According to paragraph 1,
Characterized by having both water-repellent and hydrophilic functions and antibacterial properties,
Method for manufacturing a multi-functional glass coating film.
According to paragraph 1,
The antibacterial glass composition contains 20 to 40% by weight of SiO ₂ ; B ₂ O ₃ 1.5-10% by weight; Na ₂ O 2-10% by weight; K ₂ O 2-15% by weight; ZnO 20-40% by weight; CaO 1-5% by weight; CuO 0-5% by weight; And Fe ₂ O ₃ 0 to 3% by weight;
Method for manufacturing a multi-functional glass coating film.
According to paragraph 1,
The antibacterial glass powder is characterized in that it is manufactured with a particle size of 1 to 10 ㎛ and a spherical shape,
Method for manufacturing a multi-functional glass coating film.
According to paragraph 1,
The non-sintering deposition method is characterized in that it is one of aerosol deposition (AD), cold spray deposition, and atmospheric plasma spray (APS) deposition.
Method for manufacturing a multi-functional glass coating film.
According to paragraph 1,
Characterized in that the substrate is a glass substrate or a polymer substrate,
Method for manufacturing a multi-functional glass coating film.
According to clause 6,
The polymer substrate is characterized in that it contains polycarbonate (PC),
Method for manufacturing a multi-functional glass coating film.
According to paragraph 1,
In step (c), the antibacterial glass powder
Characterized in that a mixture of at least one of Teflon and cerium dioxide (CeO ₂ ) is coated using a non-sintering deposition method.
Method for manufacturing a multi-functional glass coating film.
According to paragraph 1,
In step (c), the antibacterial glass powder
Characterized by coating a mixture of titanium dioxide (TiO ₂ ) using a non-sintering deposition method.
Method for manufacturing a multi-functional glass coating film.
According to paragraph 1,
Characterized in that the transmittance of the glass coating film is 70% or more,
Method for manufacturing a multi-functional glass coating film.
A multi-functional glass coating film manufactured according to the manufacturing method according to any one of claims 1 to 10.
A home appliance comprising the multi-functional glass coating film of claim 11.