Antibacterial glass composition, manufacturing method of antibacterial glass powder of antibacterial glass composition, and household electrical appliance product

Abstract

The invention relates to an antibacterial glass composition, a manufacturing method of antibacterial glass powder of the antibacterial glass composition and a household appliance product comprising the antibacterial glass powder. The antibacterial glass composition comprises the following components in percentage by weight: 30-70% of P2O5; 10 to 30% by weight of MgO; 10 to 35 wt% of one or more of ZnO and WO3; 0.3% to 1% by weight of MnO2; and 0.4 to 2% by weight of Ag2O; and the antibacterial glass composition does not contain K2O, Na2O and CaO. As a result, the present invention can provide a phosphate-based antibacterial glass composition which can exhibit excellent durability and antibacterial performance even if a melting point lowering component and a structure strengthening component, which cause side effects, are excluded.

Description

Technical Field

[0001] The invention relates to an antibacterial glass composition and a method for manufacturing antibacterial glass powder thereof and a household appliance product comprising the antibacterial glass powder. Background Art

[0002] Microorganisms such as bacteria and fungi are found in our living spaces such as water purifiers, refrigerators, ovens, and washing machines. If microorganisms enter the human body, they can become the cause of life-threatening infections. Therefore, there is a need for antimicrobial glass compositions that can control the spread of microorganisms in household appliances such as water purifiers, refrigerators, ovens, and washing machines.

[0003] In such home appliances, bacteria and molds grow on parts exposed to moisture among parts using plastic injection molding, which causes problems with appearance and usage environment.

[0004] The bacteria that inhabit home appliances are extremely diverse, and the main strains may differ depending on the component, but generally, there is a high probability that Pseudomonas aeruginosa will inhabit components that are exposed to moisture.

[0005] Therefore, the antimicrobial agent should ensure antimicrobial performance against such strains. In addition, the antimicrobial agent should be strictly selected from materials with low toxicity to the human body and the environment and materials that ensure durability against high temperatures.

[0006] Antimicrobial agents can be roughly divided into inorganic and organic types. Organic antimicrobial agents use water to dissolve materials with antimicrobial properties to the surface side to exert antimicrobial power against bacteria, thereby showing excellent antimicrobial properties, but when used in washing machines, the durability may be reduced. In addition, the problem that organic antimicrobial agents have dissolved materials that are harmful to the human body and the environment has been continuously raised recently. In addition, due to the low decomposition temperature, there is a risk of decomposition during the injection molding process.

[0007] Although inorganic antimicrobial agents have much lower solubility than organic antimicrobial agents and can ensure high-temperature durability, they may cause wettability problems at the interface with plastic injection moldings, and since most of them use Ag as an antimicrobial material, they are expensive, resulting in limited applications.

[0008] Antimicrobial glass compositions using Ag as an antimicrobial component are known. Among them, phosphate-based antimicrobial glass compositions using phosphate as a main component are known.

[0009] Antimicrobial glass compositions containing Ag are important for enhancing the durability of antimicrobial agents and preventing discoloration. However, if a large amount of Al2O3, which is commonly used, is added to the antimicrobial glass composition in order to improve the durability of the antimicrobial agent, the antimicrobial power of the antimicrobial agent may be reduced.

[0010] On the contrary, if the antimicrobial glass composition excludes Al2O3, a component that lowers the melting point of the antimicrobial glass composition must be used together, but this may cause discoloration of Ag. Summary of the invention

[0011] An object of the present invention is to provide a novel phosphate-based antimicrobial glass composition that can exhibit excellent durability and antimicrobial performance even when a melting point-lowering component and a structure-reinforcing component that cause side effects are excluded.

[0012] Furthermore, an object of the present invention is to provide a novel phosphate-based antimicrobial glass composition capable of preventing discoloration caused by reduction of Ag.

[0013] Another object of the present invention is to provide a novel phosphate-based antimicrobial glass composition having enhanced durability and improved antimicrobial sustainability.

[0014] The purpose of the present invention is not limited to the purpose mentioned above, and other purposes and advantages of the present invention not mentioned can be understood through the following description, and can also be more clearly understood through the embodiments of the present invention. In addition, it can be easily known that the purposes and advantages of the present invention can be achieved by the means and combinations thereof given in the scope of rights.

[0015] The antimicrobial glass composition of the present invention can ensure excellent durability and antimicrobial performance even if specific melting point lowering components and structure strengthening components are excluded.

[0016] To this end, the antibacterial glass composition of the present invention uses the concept of ionization tendency to combine MnO2 as a melting point lowering component and MgO, ZnO and / or WO3 as a structural strengthening component to solve the problems of the prior art.

[0017] Specifically, the antibacterial glass composition of the present invention comprises: 30 to 70 wt% of P2O5; 10 to 30 wt% of MgO; 10 to 35 wt% of one or more of ZnO and WO3; 0.3 to 1 wt% of MnO2; and 0.4 to 2 wt% of Ag2O, and the antibacterial glass composition does not include K2O, Na2O and CaO.

[0018] Furthermore, the method for producing the antibacterial glass powder of the present invention comprises the steps of forming the antibacterial glass composition, melting, cooling and pulverizing.

[0019] Secondly, the household appliance product of the present invention includes an injection molded product in which antibacterial glass powder is added to a resin material.

[0020] In the household appliance of the present invention, the antibacterial glass powder comprises: 5 to 35 weight % of the ZnO; and less than 5 weight % of the WO3.

[0021] According to the present invention, it is possible to provide a phosphate-based antimicrobial glass composition that can exhibit excellent durability and antimicrobial performance even when a melting point-lowering component and a structure-reinforcing component that cause side effects are excluded.

[0022] In addition, according to the present invention, a phosphate-based antimicrobial glass composition can be provided which can prevent discoloration caused by reduction of Ag and exhibit excellent durability and antimicrobial performance by eliminating melting point-lowering components and structure-strengthening components that cause side effects.

[0023] In addition, according to the present invention, a novel phosphate-based antimicrobial glass composition having enhanced durability and improved antimicrobial sustainability can be provided.

[0024] In addition to the above-mentioned effects, specific effects of the present invention will be described together with the following description of specific matters for implementing the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a flowchart showing a method for producing antibacterial glass powder according to an embodiment of the present invention.

[0026] Description of Reference Numerals

[0027] S110: Mixing step

[0028] S120: Melting step

[0029] S130: Cooling step

[0030] S140: Crushing step DETAILED DESCRIPTION

[0031] Hereinafter, the above-mentioned objects, features and advantages will be described in detail with reference to the accompanying drawings, so that a person skilled in the art can easily implement the technical idea of ​​the present invention. In the description of the present invention, if it is determined that the specific description of the related known technology may unnecessarily confuse the main idea of ​​the present invention, the detailed description will be omitted. Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same or similar components.

[0032] Unless the context clearly indicates otherwise, the singular expressions used in this specification include the plural expressions. In this application, the terms "consisting of" or "comprising" should not be interpreted as necessarily including all the constituent elements or steps recorded in the specification, but should be interpreted as not including some of the constituent elements or steps, or may also include additional constituent elements or steps.

[0033] Hereinafter, the antibacterial glass composition and the method for manufacturing the antibacterial glass powder thereof and the home appliance product including the antibacterial glass powder according to several embodiments of the present invention will be described.

[0034] Antibacterial glass composition

[0035] The antimicrobial glass composition of the embodiment of the present invention can exhibit excellent durability and antimicrobial performance even if the melting point lowering component and the structure strengthening component causing side effects are excluded.

[0036] The antibacterial glass composition of the present invention is a phosphate glass composition, comprising: 30 to 70 weight % of P2O5; 10 to 30 weight % of MgO; 10 to 35 weight % of one or more of ZnO and WO3; 0.3 to 1 weight % of MnO2; and 0.4 to 2 weight % of Ag2O, and does not include K2O, Na2O and CaO.

[0037] In addition, the antibacterial glass composition of the present invention may further include 20 wt % or less of B2O3, preferably 5 to 35 wt % of the ZnO; and 5 wt % or less of the WO3.

[0038] Hereinafter, the functions and contents of the components of the antibacterial glass composition according to the embodiment of the present invention will be described in detail.

[0039] P2O5 and B2O3

[0040] In the antimicrobial glass composition, the matrix for containing silver (Ag) is selected in consideration of the electrochemical properties and structural aspects of the glass. Silver has a high reducibility in ionization tendency. Therefore, the vitrification of the antimicrobial glass composition containing silver is affected by the types of glass-forming oxides and modifying oxides.

[0041] Generally, the ionization tendency centered on alkali-alkaline earth components is widely known. Among them, silver is known to be an element with high reducing property and low ionization tendency. However, in the present invention, the tendency in the electrophilic region is important, not the tendency in the nucleophilic region. If the region connected in the order of Ag-Pt-Au-Si-Ti-Ta-CW-Mo-VP is considered, since silver and Si have similar ionization tendencies and there is less non-crosslinked oxygen, silicate glass is not conducive to containing silver.

[0042] Therefore, in the P2O5-(B2O3) matrix, it is beneficial for Ag to be stably vitrified into ions.

[0043] P2O5 and B2O3 are representative mesh-forming oxides that can vitrify antimicrobial glass compositions. They are components that play a skeleton role in the structure of glass. When the two components are used alone at 100% by weight, although they have excellent vitrification ability, such glass is hygroscopic to water and therefore has low durability.

[0044] In particular, when the two components are used together, the glass structure becomes dense, and the durability of the glass can be slightly improved.

[0045] In the present invention, since P2O5 and B2O3 are both low melting point substances and mesh-forming oxides, when the total addition is less than 50% by weight, it will be out of the vitrification range such as unmelted material / incompatibility. In addition, when more than 70% by weight of P2O5 and B2O3 are added, the durability of the glass is reduced, and it is easily soluble in water. Therefore, although the glass has sufficient antibacterial power in the early stage, as time goes by, the antibacterial substance and the matrix dissolve in water, so it cannot be used for a long time.

[0046] To this end, the antibacterial glass composition of the present invention includes 30 to 70 wt % of P2O5. In addition, the antibacterial glass composition of the present invention may include less than 20 wt % of B2O3.

[0047] MgO, MnO2 and Ag2O

[0048] Secondly, the antimicrobial glass composition of the present invention includes MgO, MnO2 and Ag2O as modifying oxides.

[0049] The modifying oxide refers to an ionic bond component that cannot be vitrified alone but is located between covalent bonds forming the glass as a component of the glass to affect the properties of the glass.

[0050] When selecting other components in the glass component system containing silver, the ionization tendency is an important factor. In K-Ca-Na-Mg-Al-Zn-Fe-Ni-Sn-Pb-(H)-Cu-Hg-Ag-Pt, which is a nucleophile region, K, Na and Ca have high ionization tendencies, and thus can reduce silver in the state of being dissolved inside or outside the glass. Therefore, in the present invention, the use of K2O, Na2O and CaO is excluded.

[0051] First, although MgO is an alkaline earth metal, it is affected by the single bond strength with oxygen and the ion size (Size), and unlike CaO, it strengthens the durability of phosphate glass and increases the melting point. Therefore, in ordinary phosphate glass, MgO is used together with alkali metals or CaO. In the present invention, other solutions for lowering the melting point are used. In the present invention, since the use of Na2O, K2O and CaO is excluded, the antibacterial glass composition of the present invention has a structure of glass strengthened by MgO. MgO exists in the glass as a modified oxide, which plays a role in increasing non-cross-linked oxygen. However, due to the strong bonding strength of Mg-O, Mg + The size of the ion is related to Na + , K + , Ca + The ratio is relatively small, so the dissolution characteristics in water are small, which has the characteristic of improved durability. The core mechanism of dissolution into water, namely H3O + In the initial reaction of substitution of ions and ionic bonding substances of glass, due to H3O + With Ca + 、Na + , K + 、Ag + The ions are similar in size and are therefore susceptible to dissolution due to substitution.

[0052] The antibacterial glass composition of the present invention includes 10 to 30 wt% MgO. When MgO is less than 10 wt%, the durability improvement effect obtained by the Mg-O bonding strength is minimal, thereby reducing the antibacterial sustainability. If MgO exceeds 30 wt%, the melting point of the glass is greatly increased, thereby generating unmelted material.

[0053] Secondly, in the present invention, MnO2 is used as a modified oxide, and is mostly used for glass related to electromagnetic properties. The present invention utilizes the property of MnO2 to improve the mobility of ions in the glass state or molten state of the antibacterial glass composition. In the molten state of the antibacterial glass composition, if the mobility of ions is improved, the viscosity of the glass is greatly reduced, thereby reducing the melting point. In addition, Ag ions that are difficult to maintain in an ionic state are evenly distributed. As a result, the aggregation of Ag ions and the reduction of Ag are prevented.

[0054] The antibacterial glass composition of the present invention includes 0.3 to 1 wt% of MnO2. If less than 0.3 wt% of MnO2 is added, the melting point lowering effect and the ion mobility improvement effect in the melt are insufficient. As a result, Zn / Mg incompatibility occurs in the antibacterial glass composition. On the contrary, if more than 1 wt% of MnO2 is added, the antibacterial agent becomes black due to the change in the valence of Mn, which limits its use as a general white / colorless additive.

[0055] Secondly, Ag is a representative component with antibacterial properties. Ag in glass is + If a large amount of Ag is added, the antibacterial effect is enhanced, but there are disadvantages such as reduced durability of the antibacterial agent, discoloration, and high cost.

[0056] The antibacterial glass composition of the present invention comprises 0.4 to 2 wt% of Ag2O. If 0.4 wt% of the Ag2O is added, the dissolved Ag + If the content of Ag2O exceeds 2 wt%, the content of Ag2O exceeds 2 wt%, and ...

[0057] ZnO and WO3

[0058] The antibacterial glass composition of the present invention comprises 10 to 35 wt % of one or more of ZnO and WO 3 as an intermediate oxide.

[0059] The intermediate oxide refers to a component that is substituted with a part of the network-forming oxide to form a covalent bond, thereby being able to play the role of the network-forming oxide and the role of the modifying oxide.

[0060] In terms of glass structure, ZnO is a component that plays the role of a mesh former and a modified oxide. In addition, in the present invention, ZnO is a core component that exhibits antibacterial effects. The present invention excludes alkali oxides. In this composition that excludes alkali oxides, the structure of ZnO is determined by P2O5 / B2O3, so that the O-Zn-O covalent bond and Zn 2+ Ionic bonds exist in a mixed state. Such a structure creates a local positive charge that is different from the negative charge that is the normal state of bacteria. In addition, the reactive oxygen species (ROS) generated by this structure causes oxidative stress to the bacteria. In the present invention, although ZnO is not the main component that exhibits antibacterial properties, it makes up for the antibacterial properties of Ag and makes up for the antibacterial power in terms of antibacterial sustainability. Therefore, unlike the prior art that adds a high content of Ag to exert antibacterial sustainability and has a risk of discoloration, the present invention can use Ag in an appropriate amount.

[0061] Moreover, in the O-Zn-O covalent bond and Zn 2+In the state of mixed ionic bonds, although nano ZnO is a ceramic material, it exhibits an effect similar to ionic characteristics. This state exerts antioxidant properties, and even in the state where there is no alkali oxide locally, the antioxidant properties will not be reduced.

[0062] Secondly, although WO3 is an intermediate oxide, it has a high single bond strength with oxygen and is a component close to glass-forming oxides. In the present invention, the durability of the glass is improved by the POW bond. In addition, since the POW bond increases the hardness of the glass, it is different from the general corrugated powder when crushed and becomes a needle-shaped shape. If a needle-shaped antibacterial agent is used, the dispersibility and floating properties are improved. In addition, in the ionization tendency, W acts as an electrophilic substance, which makes Ag keep Ag. + Therefore, even in the state of being dissolved in the glass or from the glass, W prevents the reduction of silver. This means that it can exhibit anti-oxidation performance.

[0063] In the present invention, when less than 10 wt % of ZnO and WO3 are added, the durability of the antibacterial agent is reduced, thereby reducing the antibacterial sustainability and reducing the antioxidant performance. On the contrary, when more than 35 wt % of ZnO and WO3 are added, the melting point of the glass is greatly increased, thereby possibly generating unmelted materials.

[0064] More preferably, the antibacterial glass composition of the present invention may include 5 to 35 wt % of the ZnO and less than 5 wt % of the WO 3 .

[0065] Phosphate-based glass such as the antibacterial glass composition of the present invention is hygroscopic and therefore has the characteristic of being easily soluble in water. The main phosphate-based glass antibacterial agent used uses Al2O3 (or ZrO2) to improve durability. The structure of the glass is strengthened to PO-Al, so that the non-crosslinked oxygen is reduced, and the glass is strengthened. At this time, the problem of rising melting point arises. In addition, in order to prevent the Ag in the silver-containing glass + →Ag 0 The discoloration caused by reduction can also be treated by adding ZnO. When a small amount of ZnO is added to phosphate glass, it does not affect the melting point, but when a large amount is added to prevent discoloration, the melting point of the glass increases. In silver-containing phosphate glass, alkali metals (Na2O, K2O) and alkaline earth metals (CaO) are usually used to lower the melting point. The presence of such alkali metals or alkaline earth metals promotes the discoloration of silver. + →Ag 0 As a result, silver precipitation or silver reduction occurs during the vitrification process. Therefore, when Na2O, K2O and CaO are used in phosphate-based glass, problems such as silver discoloration and insufficient durability occur.

[0066] The present invention provides a novel antimicrobial glass composition capable of overcoming discoloration of silver and reduction in durability, which are persistent problems in the design of silver-containing phosphate-based glass.

[0067] Due to the above-mentioned composition / structural characteristics, the antimicrobial glass composition of the present invention prevents discoloration and improves the antimicrobial sustainability compared to conventional silver-based glass.

[0068] Method for producing antibacterial glass powder

[0069] Hereinafter, a method for producing antibacterial glass powder according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0070] Figure 1 The present invention is a flowchart showing a method for producing antibacterial glass powder according to an embodiment of the present invention.

[0071] like Figure 1 As shown, the method for manufacturing the antibacterial glass powder according to the embodiment of the present invention includes: a mixing step S110; a melting step S120; a cooling step S130; and a crushing step S140.

[0072] mix

[0073] In the mixing step S110 , the antibacterial glass composition is formed, and the characteristics of the antibacterial glass composition are as described above.

[0074] Melting

[0075] In the melting step S120, the antibacterial glass composition is melted.

[0076] In this step, preferably, the melting is performed at 1,100 to 1,400°C for 1 to 60 minutes. When the melting temperature is lower than 1,100°C or the melting time is less than 1 minute, the antibacterial glass composition cannot be completely melted, thereby causing the problem of incompatibility of the glass melt. On the contrary, when the melting temperature exceeds 1,400°C or the melting time exceeds 60 minutes, it is not economical because too much energy and time are required.

[0077] cool down

[0078] In the cooling step S130, the molten antibacterial glass composition is cooled to room temperature.

[0079] In this step, it is preferred to cool the glass in a furnace. If air cooling or water cooling is used, excessive internal stress is generated in the antibacterial glass, which may cause cracks in some cases. Therefore, it is preferred to cool the glass in a furnace.

[0080] Crushing

[0081] In the crushing step S140, the cooled antibacterial glass is crushed. At this time, any of the well-known ball mills, jet mills, and planetary mills can be used for crushing.

[0082] By such pulverization, the antimicrobial glass is pulverized into fine antimicrobial glass powder. Preferably, such antimicrobial glass powder has an average diameter of 30 μm or less, and a more preferred range is 2 to 12 μm.

[0083] Home appliances

[0084] On the other hand, the household appliance product of the embodiment of the present invention includes a resin material and a plastic injection molded product in which the antibacterial glass powder manufactured by the above method is added to the resin material. The household appliance product used in the present invention may include a water purifier, a washing machine, a vertical air conditioner, a system air conditioner, and a refrigerator, but is not limited to these.

[0085] Here, the plastic injection molding includes 95.0 to 99.0 wt % of a resin material and 1.0 to 5.0 wt % of an antibacterial glass powder.

[0086] If the amount of antimicrobial glass powder added is less than 1.0% by weight of the total weight of the plastic injection molded product, the antimicrobial activity against Pseudomonas aeruginosa may be insufficient. On the other hand, if the amount of antimicrobial glass powder added is more than 5.0% by weight of the total weight of the plastic injection molded product, the mechanical properties may be reduced.

[0087] The resin material includes at least one of polypropylene (PP), polycarbonate (PC), ethylene propylene rubber (EPDM), acrylonitrile-butadiene-styrene (ABS) and high impact polystyrene (HIPS).

[0088] At this time, the components of the antibacterial glass powder are the same as those of the antibacterial glass composition described above.

[0089] In addition, in the plastic injection molding, in addition to the antibacterial glass powder, functional additives may also be included. At this time, as the functional additives, at least one selected from antioxidants, foaming agents, impact enhancers, nucleating agents, coupling agents, etc. may be included.

[0090] Therefore, the household electrical appliance according to the embodiment of the present invention has an antibacterial property capable of preventing the habitat and growth of various microorganisms by being applied to the surface of a component that is vulnerable to bacterial growth and has a high contact with moisture.

[0091] Furthermore, the antibacterial glass powder of the present invention can be used as a coating material for injection moldings and glass partitions, and as an additive for paint or powder coating.

[0092] Example

[0093] The following further describes the composition and function of the present invention in detail through the preferred embodiments of the present invention. However, this is proposed as a preferred example of the present invention and cannot be interpreted as limiting the present invention in any sense.

[0094] The contents not described here can be technically inferred by a person skilled in the art, so their description is omitted.

[0095] 1. Preparation of Antibacterial Glass Powder Samples

[0096] Table 1 is a table showing the compositions and composition ratios of the antibacterial glass compositions of Examples and Comparative Examples.

[0097] The antibacterial glass compositions having the compositions described in the above examples and comparative examples were melted at 1,200°C in an electric furnace and then cooled on a stainless steel plate by air cooling to form glass blocks. The obtained glass was then pulverized by a jet mill to produce antibacterial glass powder samples having a D50 particle size of 2 to 12 μm.

[0098] Among them, the raw material of the component Ag2O was used after stoichiometric calculation of one of AgNO3, Ag3PO4 and Ag2O. The remaining components used the same components or mixed components as shown in the table. The remaining components used the same components as those described in Table 1 and Table 2. At the same time, the vitrification was distinguished based on the case where the homogeneous glass property was present and the phenomenon of milky whitening and unmelted material.

[0099] [Table 1] (Unit: weight %)

[0100]

[0101] 2. Evaluation of physical properties of antibacterial glass powder

[0102] Table 2 is a table showing the results of physical property evaluations of samples produced according to Examples and Comparative Examples.

[0103] 1) Antibacterial activity determination

[0104] The homogeneous vitrified examples and comparative examples were evaluated for antimicrobial activity against four bacteria (Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa) according to the shaking flask method (ASTM E2149-13a).

[0105] 2) Antibacterial power after durability evaluation

[0106] In order to evaluate the durability of the homogeneously vitrified Examples and Comparative Examples, the antibacterial test (50° C., 32 hours) was additionally performed after exposure to moisture using the ASTM C1285-14 (Durability Evaluation Method for Glass and Glass Ceramics) test method.

[0107] [Table 2]

[0108]

[0109] As shown in Table 2, the samples manufactured according to Examples 1 to 5 all showed an antibacterial activity of 99% or more against the four types of bacteria. In addition, the samples manufactured according to Examples 1 to 5 all showed an antibacterial activity of 99% or more when the antibacterial activity was measured after exposure to moisture according to the durability evaluation method.

[0110] On the other hand, in the case of the comparative examples, homogeneous vitrification was not achieved in Comparative Example 4. Furthermore, none of the samples produced according to Comparative Examples 1 to 4 exhibited excellent antibacterial activity against all four types of bacteria.

[0111] As shown above, the present invention is described with reference to the accompanying drawings, but the present invention is not limited to the embodiments and drawings disclosed in this specification, and various modifications can be made by ordinary technicians in the field within the scope of the technical concept of the present invention. In addition, even if the effects of the configuration of the present invention are not clearly described in the above description of the embodiments of the present invention, the effects that can be predicted by the configuration should be recognized.

Claims

1. An antibacterial glass composition, wherein: include: 30-70 wt% P2O5; 10-30 wt% MgO; 10 to 35 wt% of one or more of ZnO and WO3; 0.3 to 1 wt% MnO2; and 0.4-2 wt% Ag2O, And the antibacterial glass composition does not include K2O, Na2O and CaO.

2. The antibacterial glass composition according to claim 1, wherein: It also includes less than 20 wt% of B2O3.

3. The antibacterial glass composition according to claim 1, wherein: include: 5 to 35 weight % of said ZnO; as well as 5 wt% or less of the WO3.

4. A method for producing an antibacterial glass powder, wherein: include: (a) mixing and stirring a composition including 30-70 wt % of P2O5, 10-30 wt % of MgO, 10-35 wt % of one or more of ZnO and WO3, 0.3-1 wt % of MnO2 and 0.4-2 wt % of Ag2O, excluding K2O, Na2O and CaO, to form an antimicrobial glass composition; (b) a step of melting the antibacterial glass composition; (c) cooling the molten antimicrobial glass composition; and (d) A step of pulverizing the cooled antibacterial glass.

5. The method for producing antibacterial glass powder according to claim 4, wherein: In the step (a), the antibacterial glass composition further comprises less than 20 wt % of B2O3.

6. The method for producing antibacterial glass powder according to claim 4, wherein: In the step (a), the antibacterial glass composition comprises: 5 to 35 wt % of the ZnO; and less than 5 wt % of the WO 3 .

7. The method for producing antibacterial glass powder according to claim 4, wherein: In the step (b), the melting is performed at 1,100 to 1,400° C. for 1 to 60 minutes.

8. A household appliance product, comprising a plastic injection molded product in which antibacterial glass powder is added to a resin material, wherein: The plastic injection molding comprises: 95.0 to 99.0% by weight of the resin material; and 1.0 to 5.0% by weight of the antibacterial glass powder, The antibacterial glass powder comprises: 30-70 wt% P2O5; 10-30 wt% MgO; 10 to 35 wt% of one or more of ZnO and WO3; 0.3 to 1 wt% MnO2; and 0.4-2 wt% Ag2O, And the antibacterial glass powder does not include K2O, Na2O and CaO.

9. The household appliance according to claim 8, wherein: The resin material includes at least one of polypropylene (PP), polycarbonate (PC), ethylene-propylene rubber (EPDM), acrylonitrile-butadiene-styrene (ABS) and high-impact polystyrene (HIPS).

10. The household appliance according to claim 8, wherein: The antibacterial glass powder also includes less than 20 weight percent of B2O3.

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