KR102361614B1 - Antibiotic board and manufacturing method thereof - Google Patents

Abstract

According to one embodiment of the present invention, provided is an antibacterial functional board which comprises an antibacterial resin provided from a mixed liquid comprising: a melamine resin; a water-based dispersion of antibacterial functional metal oxide; and a positive ionic curing agent.

Description

Antibacterial functional board and manufacturing method thereof

The present invention relates to an antibacterial functional board and a method for manufacturing the same.

Boards or decorative boards are used in various fields as building materials. Among boards, LPM (Low Pressure Melamine) board refers to an eco-friendly surface finishing material made by impregnating and drying patterned paper with various patterns in resin so that it can be molded and adhered to MDF, PB, etc. only by hot pressure without adhesive.

Recently, technology development for imparting antibacterial functionality to the above-described LPM is being carried out. However, in the process of imparting antibacterial functionality to the LPM, there is a problem in that the LPM is cracked or the aesthetics is deteriorated, such as whitening. In addition, when antibacterial properties are imparted to the board due to the characteristics of the building material, it is important that the antibacterial properties continue for a long time.

For example, among conventional antibacterial products, the organic antibacterial coating method can quickly impart an antibacterial function to the board, but there is a problem that the antibacterial function does not last. In addition, the method of impregnating the inorganic antibacterial particles and providing the board has a problem that the antibacterial function does not appear quickly, although the antibacterial function is sustained. In addition, the inorganic antibacterial particle impregnation method produced by-products in the subsequent processing process such as mixing, heating, and pressurizing antibacterial substances, and had problems with quality deterioration such as whitening and cracks appearing on the surface of the board.

Therefore, there is a need for a board that provides an antibacterial function quickly for a long time and does not have problems of quality deterioration such as whitening and cracking.

An object of the present invention is to provide an antibacterial functional board that exhibits antimicrobial properties quickly, lasts for a long time, and does not cause whitening or cracking. Such an antibacterial functional board can be used as a decorative material.

According to an embodiment of the present invention, melamine resin; Aqueous dispersion of antibacterial functional metal oxide; and an antibacterial resin provided from a mixed solution containing a cationic curing agent, an antibacterial functional board is provided.

According to an embodiment of the present invention, the antibacterial functional metal oxide includes zinc oxide, and the aqueous dispersion includes a mixed solution of the zinc oxide and water, an antibacterial functional board is provided.

According to an embodiment of the present invention, at least a portion of the cationic curing agent comprises a latent cationic curing agent that reacts after the formation of the coating layer to bind the melamine resin and the antibacterial functional metal oxide, an antibacterial functional board is provided. .

According to an embodiment of the present invention, the antibacterial functional board having a structure in which the antibacterial functional metal oxide is dispersed in the melamine resin is provided.

According to an embodiment of the present invention, there is provided an antibacterial functional board, further comprising a base board provided by bonding the antibacterial resin and at least one surface.

According to an embodiment of the present invention, a first step of preparing an antibacterial resin mixture by mixing a melamine resin, an aqueous dispersion of an antibacterial functional metal oxide, and a cationic curing agent; There is provided a method for manufacturing an antibacterial functional board, comprising a second step of providing an antibacterial resin by molding the antibacterial resin mixture.

According to an embodiment of the present invention, the second step is performed at 150° C. to 180° C. to prevent disappearance or deterioration of the antibacterial functional metal oxide in the antibacterial resin mixture, an antibacterial functional board manufacturing method is provided.

According to an embodiment of the present invention, the second step includes drying or press molding of the antibacterial resin mixture, an antibacterial functional board manufacturing method is provided.

According to an embodiment of the present invention, at least a portion of the cationic curing agent comprises a latent cationic curing agent that reacts after formation of the coating layer to bind the melamine resin and the antibacterial functional metal oxide, and after performing the second step The reaction of the latent cationic curing agent is generated at a temperature lower than the temperature for performing the second step, an antibacterial functional board manufacturing method is provided.

According to an embodiment of the present invention, the mixture is mixed without by-products (precipitates) during the manufacturing process of the antibacterial functional board, and it is possible to maximize the antibacterial effect and the durability of the antibacterial power within a short time. In addition, it is possible to maintain a uniform and stable antibacterial effect with little change in physical properties during subsequent processing (temperature, pressure, etc.).

In addition, in providing an antibacterial functional board, various designs can be expressed without color change, and when bonding to boards such as MDF and PB (Partical), an adhesive can not be used, and phenomena such as whitening and corner damage can be avoided. can alleviate

1 is a perspective view showing an antibacterial functional board according to an embodiment of the present invention.
2 is a perspective view showing an antibacterial functional board according to an embodiment of the present invention.
3 is a flowchart illustrating a method for manufacturing an antibacterial functional board according to an embodiment of the present invention.
4a to 4c show the results of the preparation of the antimicrobial resin mixture according to Examples and Comparative Examples of the present invention.
5 shows the results of the preparation of the antimicrobial resin mixture according to Examples and Comparative Examples of the present invention.
6 shows the results of manufacturing an antibacterial functional board according to Examples and Comparative Examples of the present invention.
6 is an abrasion resistance test result of an antibacterial functional board according to an embodiment and a comparative example of the present invention.
7 is a scratch test result of an antibacterial functional board according to an embodiment and a comparative example of the present invention.
8 is a stain resistance test result of an antibacterial functional board according to an embodiment and a comparative example of the present invention.
9 is a crack test result of an antibacterial functional board according to an embodiment and a comparative example of the present invention.

Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In describing each figure, like reference numerals have been used for like elements. In the accompanying drawings, the dimensions of the structures are enlarged than the actual size for clarity of the present invention. Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as "comprise" or "have" are intended to designate that a feature, number, step, operation, component, part, or a combination thereof described in the specification exists, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof. Also, when a part of a layer, film, region, plate, etc. is said to be “on” another part, it includes not only the case where the other part is “directly on” but also the case where there is another part in between. In addition, in the present specification, when a portion such as a layer, film, region, or plate is formed on another portion, the formed direction is not limited only to the upper direction, and includes those formed in the side or lower direction. . Conversely, when a part of a layer, film, region, plate, etc. is said to be "under" another part, this includes not only cases where it is "directly under" another part, but also cases where there is another part in between.

In this specification, 'upper surface' and 'lower surface' are used as relative concepts in order to easily understand the technical idea of the present invention. Accordingly, the terms 'top' and 'bottom' do not refer to specific directions, positions, or components, and may be interchangeable with each other. For example, 'top' may be interpreted as 'bottom', and 'bottom' may be interpreted as 'top'. Accordingly, 'top' may be expressed as 'first' and 'bottom' as 'second', 'bottom' may be expressed as 'first', and 'top' may be expressed as 'second'. However, in one embodiment, 'top' and 'bottom' are not used interchangeably.

According to an embodiment of the present invention, a melamine resin, an aqueous dispersion of an antibacterial functional metal oxide, and a cationic curing agent are mixed, and an antibacterial functional board is provided by using the mixture thereof. This antibacterial functional board has excellent functionality and aesthetics because there is no sediment generation during the manufacturing process. In addition, since it is included in the melamine resin forming the uppermost coating film, the dissolution is active, and an immediate antibacterial effect can appear.

1 and 2 are perspective views showing an antibacterial functional board according to an embodiment of the present invention.

Referring to FIG. 1 , an antibacterial functional board is provided. The antibacterial functional board may be composed of the antibacterial resin 100 alone. At this time, the antibacterial resin is a melamine resin; It may be provided from a mixture containing an aqueous dispersion of an antibacterial functional metal oxide and a cationic curing agent. For example, the antibacterial resin 100 may be provided by molding the above-described mixed solution through a process such as drying and pressing.

In some cases, the antibacterial functional board may further include other members in addition to the antibacterial resin 100 . For example, referring to FIG. 2 , the antibacterial functional board further includes an antibacterial resin 100 and a base board 200 provided by bonding the antibacterial resin 100 and at least one surface. The base board 200 may be paper, a surface material, a film, etc. on which a specific pattern is printed.

2, the antibacterial resin 100 and the base board 200 are sequentially shown in a stacked form, but these components may be provided in other forms. For example, the base board 200 may be impregnated with a mixed solution for providing the antibacterial resin 100 to provide an antibacterial functional board. In this case, the mixed solution not only forms a thin film on the base board 200, but also the base board (200) It can also penetrate inside. In this case, the process of impregnating the mixed solution into the base board 200 may be performed at a low pressure of about 10 kgf/cm ² to about 20 kgf/cm ² .

Next, the melamine resin, which is a component of the antibacterial resin 100 included in the antibacterial functional board, the aqueous dispersion of the antibacterial functional metal oxide, and the cationic curing agent will be described in detail.

First, the melamine resin is a thermosetting resin prepared by the reaction of melamine and formaldehyde, and may be used without particular limitation as long as it is commonly used in the art. For example, the melamine resin may be a polymer prepared by the reaction of melamine and formaldehyde, a prepolymer having a low polymerization degree due to partial polymerization, or a monomer composition, specifically, the melamine resin is formaldehyde per 1 mol of melamine. It may be a reaction product of 4 to 6 moles of an aldehyde.

The melamine resin may be used alone without other polymer resins such as urea resin. According to the prior art, a phenol resin, an acrylic resin, a urea resin, etc. are used together with a melamine resin to provide a decorative material board such as an LPM. However, these resins were found to be unsuitable for manufacturing the antibacterial functional board of the desired quality in the present invention. First, in the case of an acrylic resin, it cannot adhere to a wooden board alone, so when an antibacterial functional board including an acrylic resin is manufactured, there is a problem that a separate adhesive is required when adhering the antibacterial functional board to another member. In addition, in the case of phenolic resin, the color of the liquid resin is red, and there was a problem that it was not released from the surface rendering mirror plate during press work, and it was not eco-friendly. Next, in the case of urea resin, it can be mixed with melamine resin, but it affects the color of the surface material, and there is a problem that an excessive amount of curing agent is required because it does not release from the surface-directed mirror plate during press work. In particular, as the content of the urea resin increases, a lot of curing agent is required, and when the amount of the curing agent increases, there is a problem that the antibacterial functional board may be yellowed.

Melamine resin, unlike the above-mentioned resins, can be used alone or in combination, and has the advantage of being excellent in hardness or scratch resistance when cured. In addition, when impregnated in the base board 200, it does not affect the color of the base board 200, and can be cured only with a relatively small amount of curing agent, so there is no risk of yellowing. In addition, the melamine resin can be used together with a cationic curing agent to adhere to the external member without an adhesive.

Melamine resin shows a particularly advantageous effect in manufacturing an antibacterial functional board. When mixed with an aqueous dispersion of an antibacterial functional metal oxide to be described later, it facilitates the dissolution of the antibacterial substance generated from the antibacterial functional metal oxide, and thus has an excellent antibacterial effect (99.9%) Bacterial removal) should appear quickly within 4 hours. As in the prior art, when the urea resin is mixed with an aqueous dispersion of an antibacterial functional metal oxide, the elution of the antibacterial material (for example, metal ions contained in the metal oxide) is suppressed by the urea resin, and thus the antibacterial effect may be reduced. have.

Next, the antibacterial functional metal oxide aqueous dispersion is mixed with the melamine resin, and gives the antibacterial functional board an antibacterial function. In this case, the antibacterial functional metal oxide may be zinc oxide. Zinc oxide is dispersed in water, and thus, the aqueous dispersion of the antibacterial functional metal oxide may be a dispersion of zinc oxide and water.

Zinc oxide used in the antibacterial functional metal oxide aqueous dispersion has the advantage of excellent miscibility when mixed with the melamine resin compared to other antibacterial functional metal oxides. For example, in the case of silver (Ag) particles, which are often used as antibacterial functional materials, when mixed with a melamine resin, crystals are formed and gelation may occur. In this case, precipitates originating from silver particles are generated, and both the internal bonding strength of the antibacterial functional board and the bonding strength with external members may be reduced due to the precipitate containing a large amount of inorganic particles with high specific gravity.

The antibacterial functional metal oxide aqueous dispersion is also characterized in that the metal oxide is dispersed in water, which has the advantage of superior compatibility with the melamine resin compared to the case in which the metal oxide is dispersed in an organic solvent. For example, when an organic solvent such as EC dispersion (Ethyl Cellosolve dispersion) is used, metal oxide precipitates occur, and whitening and surface color differences occur during drying and pressing after the mixture is prepared. On the other hand, an antibacterial functional metal oxide aqueous dispersion in which a metal oxide, particularly zinc oxide, is dispersed in water is well miscible with the water-soluble melamine resin, and thus there is no deposit in the mixed solution to ensure uniform bonding strength. It was confirmed that whitening and surface color differences did not occur in processes such as pressing. In addition, it was confirmed that the antibacterial function also appeared quickly within 4 hours.

Since the antibacterial functional metal oxide aqueous dispersion and the water-soluble melamine resin have excellent miscibility, the antibacterial functional board prepared from the mixture may have a structure in which the antibacterial functional metal oxide in the melamine resin is uniformly dispersed. Accordingly, the antibacterial substance elution generated from the antibacterial functional metal oxide may occur evenly over the entire area of the board. In addition, since the metal oxide is uniformly dispersed, there is no problem that the bonding strength of the board is lowered in a specific area. However, in some cases, the antibacterial functional metal oxide may be provided on the surface of the antimicrobial functional board in the form of a coating after being mixed with the melamine resin. Even in this case, the metal oxide may be uniformly dispersed in the melamine resin in the coating layer.

The metal oxide particles included in the antibacterial functional metal oxide aqueous dispersion may have an average particle size of 1 nm to 50 μm, and more preferably 0.1 to 10 μm. If the average particle size is less than 1 nm, the particles may agglomerate with each other. If the average particle size exceeds 50 μm, the surface area per unit area becomes small and thus antibacterial properties cannot be sufficiently exhibited. can be difficult to implement.

The antibacterial functional metal oxide aqueous dispersion may be a solution containing about 15 wt% to 25 wt% of zinc oxide in water. As the zinc oxide content increases, the antibacterial effect increases, but transparency may decrease. Therefore, it is possible to secure both the antibacterial effect and transparency by mixing zinc oxide in the above range.

Next, the cationic curing agent may be a latent cationic curing agent. The latent cationic curing agent may be a material at least a part of which reacts after formation of the antimicrobial resin to bind the melamine resin and the antimicrobial functional metal oxide. The latent cationic curing agent can react, for example, when heated to a certain temperature to form a network structure between the melamine resin or between the melamine resin and the metal oxide.

The cationic curing agent may be mixed with two nitrogen atoms and one hydrogen atom, and a curing agent mixed with a solvent and soft water may affect the fluidity of the resin.

The cationic curing agent may be included in a ratio of about 0.2 wt% to about 3.5 wt% based on the mass of the melamine resin. When the cationic curing agent was mixed in the above-described range, it was confirmed that the gelation state was good in the mixed solution without agglomeration. The amount of the cationic curing agent used is relatively small compared to the amount of the anionic or nonionic curing agent used.

According to the prior art, anionic curing agents or nonionic curing agents have been used instead of cationic curing agents. In the manufacturing process of the antibacterial functional board, a molding step of drying or pressing the mixture at a high temperature is performed. Therefore, in general, the molding step is carried out short and for this purpose, a large amount of curing agent is added. However, there is a problem that precipitates are generated in the mixture by the added anionic or nonionic curing agent, or surface whitening occurs during product manufacturing.

In the case of a cationic curing agent, a product can be produced even when the molding step is performed for a short time while using a smaller amount than the above-described anionic or nonionic curing agent. In addition, in the case of a cationic latent curing agent, some curing agents do not react and a curing reaction occurs slowly after product molding, stabilizing the chemical bond between the melamine resin and the metal oxide at a low temperature, and preventing the disappearance of the antibacterial functional metal oxide due to high temperature. In addition, since the cationic curing agent does not cause precipitation, it is possible to secure excellent bonding strength and prevent whitening.

As described above, the antibacterial functional board according to the present invention is organically combined with a melamine resin, a metal oxide aqueous dispersion, and a cationic curing agent, so that a rapid and lasting antibacterial effect, prevention of precipitation and resulting whitening, and prevention of cracks are advantageous indicates

In the above, the configuration of the antibacterial functional board according to an embodiment of the present invention has been examined. Hereinafter, an antibacterial functional board manufacturing method will be looked at in more detail.

3 is a flowchart illustrating a method for manufacturing an antibacterial functional board according to an embodiment of the present invention.

Referring to FIG. 3 , the method for manufacturing an antibacterial functional board includes a first step (S100) of preparing an antimicrobial resin mixture by mixing a melamine resin, an aqueous dispersion of an antibacterial functional metal oxide, and a cationic curing agent; and a second step (S200) of molding the antibacterial resin mixture to provide an antibacterial resin.

First, in the first step (S100), a melamine resin, an aqueous dispersion of an antibacterial functional metal oxide, and a cationic curing agent are mixed. In this case, for example, a melamine resin may be prepared in an aqueous solution state by mixing melamine and an aqueous formaldehyde solution, and an aqueous dispersion of a metal oxide may be added to the melamine resin in an aqueous solution state. Next, an antibacterial resin mixture can be prepared by adding a cationic curing agent to the mixture of the aqueous dispersion of the melamine resin and the metal oxide. The antibacterial resin mixture may be stirred, and there is no limitation on the method of stirring.

Next, an antimicrobial resin is provided by molding the antimicrobial resin mixture in the second step (S200). In this case, the molding of the antibacterial resin mixture may be performed by drying the antibacterial resin mixture alone or by press-attaching a decorative paper with a printed pattern. Alternatively, as described above, after impregnating the antibacterial resin on the base board, drying and decorative paper press adhesion may be performed.

Drying and pressing in the second step (S200) may be performed at about 150 ℃ to about 180 ℃. This is a lower range than the temperature of a typical LPM manufacturing process. Since the molding process is performed at a relatively low temperature according to an embodiment of the present invention, there is little possibility that the metal oxide exhibiting the antibacterial function will disappear or be mutated. The reason that the process is performed at such a relatively low temperature is because the cationic curing agent can crosslink the melamine resin and the metal oxide even at a low temperature. In addition, some of the cationic curing agent may react at a temperature lower than the temperature performed in the second step (S200) after molding in the second step (S200) to strengthen the network between the melamine resin and the metal oxide.

The second step (S200) may also be performed in the form of drying after applying the antimicrobial resin mixture prepared in the first step (S100) to the surface of the LPM product.

In the above, the configuration and manufacturing method of the antibacterial functional board according to an embodiment of the present invention have been described. Hereinafter, it is intended to confirm the excellent effect of the antibacterial functional board through Examples and Comparative Examples.

Experimental Example 1. Mixture preparation results according to the type and amount of curing agent

4a to 4c show the results of the preparation of the antimicrobial resin mixture according to Examples and Comparative Examples of the present invention.

4a is a cationic curing agent that can be mixed with two nitrogen atoms and one hydrogen atom of the amino series, and 2.5% by weight, 5.0% by weight, and 10.0% by weight of a curing agent mixed with a solvent soft water, etc., respectively, based on the weight of the melamine resin. A mixture solution was prepared, and Figure 4b shows a mixture of 2.5 wt%, 5.0 wt%, and 10.0 wt% of a mixture of sulfonic acid, a stabilizer, and purified water as an anionic curing agent, respectively, based on the weight of the melamine resin to prepare a mixed solution, Figure 4c shows a mixture prepared by adding 2.5 wt%, 5.0 wt%, and 10.0 wt% of a mixture of phthalic anhydride, diethylene glycol, stabilizer, and purified water as a nonionic curing agent, respectively, based on the weight of the melamine resin.

Referring to FIG. 4A , when a cationic curing agent is added, it can be confirmed that there is no metal oxide aggregated precipitate on the wall surface of the beaker, and the metal oxide, melamine resin, and cationic curing agent are uniformly mixed. However, referring to FIGS. 4B and 4C , it can be seen that the sediment is aggregated on the wall of the beaker. In particular, this trend became more pronounced as the amount of the curing agent increased. Referring to the example in which 10.0 wt% of the curing agent was added in FIGS. 4b and 4c (the rightmost beaker in each image), it can be seen that a significant amount of sediment was generated. have. In contrast, referring to FIG. 4a , it can be confirmed that no precipitate is formed even when 10.0 wt% of a cationic curing agent is added. However, when 2.5 wt% of the cationic curing agent is added, as can be seen from the image, it was confirmed that the volume of the mixed solution is relatively small, and thus it is difficult to produce a sufficient amount of board.

Experimental Example 2. Mixture Preparation Results According to Types of Metal Oxide Dispersion

5 shows the results of the preparation of the antimicrobial resin mixture according to Examples and Comparative Examples of the present invention.

In FIG. 5, an aqueous dispersion prepared by mixing about 15 to 25% by weight of zinc oxide and water was added to about 2 to 9% by weight based on the weight of the melamine resin to prepare a 2 to 9% aqueous sample. In addition, an aqueous 10-15% sample was prepared by adding about 10 to 15% by weight of the same aqueous zinc oxide dispersion based on the weight of the melamine resin. Next, an EC sample was prepared by adding about 2 to 15 wt% of an EC dispersion prepared by mixing about 15 to 25 wt% of zinc oxide in an organic solvent of Ethyl Cellosolve, based on the weight of the melamine resin.

After the melamine resin and curing agent were added and diluted, the precipitation of the antibacterial agent and the melamine resin was checked. As a result, precipitation occurred. Also, when washing the container, it did not dissolve but aggregated. Therefore, it was determined that abnormal occurrences in the manufacturing facilities were sufficiently generated when the antibacterial functional board was produced using the EC sample.

However, in the case of the aqueous sample, the gelation state was good and no sediment was generated. Due to the unique color of the antibacterial liquid [opaque color], the mixture was cloudy when diluted with melamine resin, but no abnormalities were found in the final product, “Low Pressure Melamine Cosmetic Plate”.

Experimental Example 3. Abrasion resistance test of antibacterial functional board

6 is an abrasion resistance test result of an antibacterial functional board according to an embodiment and a comparative example of the present invention.

An abrasion resistance test was performed on the commercially available LPM according to the prior art and the LPM prepared using the water-based 2 to 15% sample prepared in Experimental Example 2 above.

The abrasion resistance test was performed by applying KS M 3332 mutatis mutandis. Specifically, every 25 revolutions of the test piece, when almost 50% of the printed pattern is erased when the cosmetic surface of the test piece is printed, or when the color layer of the printed layer is first peeled off when the cosmetic surface of the test piece is plain , the number of rotations and the weight loss of the test piece (the difference between the initial mass and the weight loss of the test piece that occurred at the end of the test) were determined to test the abrasion resistance (abrasion amount).

In the case of general LPM, the measured value is about 160 to 190 revolutions, and the amount of wear is about 0.057 to 0.060. On the other hand, as a result of the abrasion resistance test, in the case of the water-based 2 to 15% LPM shown at the top of FIG. 6 , the measured value was about 235 to 250 revolutions, and the abrasion was improved to about 0.054 to 0.057 level.

Therefore, in the case of the present invention, it can be seen that the abrasion resistance is excellent by mixing the metal oxide with the melamine resin, uniform dispersion of the metal oxide, and curing with a latent cationic curing agent.

Experimental Example 4. Scratch resistance test of antibacterial functional board

7 is a scratch test result of an antibacterial functional board according to an embodiment and a comparative example of the present invention.

A scratch resistance test was performed using a commercially available LPM according to the prior art and a water-based 2 to 15% sample prepared in Experimental Example 2 above.

The scratch resistance test was performed by applying KS M 3332 mutatis mutandis. Specifically, the scratch hardness (g) was read by reading the load when the tip of the needle was lightly touched to the cosmetic surface, and the wound was first formed on the cosmetic surface, and the wound did not disappear even when passing lightly with the fingertip.

In the case of general LPM, the scratch resistance value is about 100g. In the case of water-based 2 to 15% LPM, the measured value was about 300 g, indicating that scratch resistance was improved. Antibacterial functional board according to the present invention appeared higher.

Experimental Example 5. Chemical resistance test of antibacterial functional board

8 is a stain resistance test result of an antibacterial functional board according to an embodiment and a comparative example of the present invention.

A chemical resistance test was performed according to KS M 3332 for the commercially available LPM according to the prior art and the LPM prepared by using the water-based 2 to 15% sample prepared in Experimental Example 2 above. Specifically, after artificially contaminating the surface of the LPM using a stain-resistant material (black tea, coffee, milk, vinegar, dye, ink, etc.), the specimen was washed and the surface was inspected for traces. Changes in surface color and stains are observed with the naked eye, and the surface contamination (chemical resistance) of LPM using water system showed the same level of performance as the existing LPM.

Experimental Example 6. Crack test of antibacterial functional board

9 is a crack test result of an antibacterial functional board according to an embodiment and a comparative example of the present invention.

A crack test was performed on the LPM prepared in Experimental Example 2 using a water-based 2 to 15% sample. The crack test was performed in accordance with KS M 3332. Specifically, the test piece was placed in a dryer at 80° C. for 20 hours, and after cooling, the presence or absence of cracks was visually inspected.

As a result of checking with the naked eye, it was confirmed that no cracks were found on the surface of the antibacterial functional board according to the embodiment of the present invention and the surface properties were excellent.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art or those having ordinary skill in the art will not depart from the spirit and scope of the present invention described in the claims to be described later. It will be understood that various modifications and variations of the present invention can be made without departing from the scope of the present invention.

Accordingly, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

Claims (10)

melamine resin;
Aqueous dispersion of antibacterial functional metal oxide; and
It contains an antibacterial resin provided from a mixture containing a cationic curing agent,
At least a portion of the cationic curing agent comprises a latent cationic curing agent that reacts after formation of the antibacterial resin to bind the melamine resin and the antibacterial functional metal oxide. According to claim 1,
The antibacterial functional metal oxide includes zinc oxide,
The aqueous dispersion includes a mixed solution of the zinc oxide and water, antibacterial functional board. 3. The method of claim 2,
The aqueous dispersion is a solution in which 15 wt% to 25 wt% of zinc oxide is dispersed in water, antibacterial functional board. delete According to claim 1,
The cationic curing agent is included in a ratio of 0.2 wt% to 3.5 wt% based on the mass of the melamine resin, antibacterial functional board. According to claim 1,
Antibacterial functional board, further comprising a base board provided by bonding the antibacterial resin and at least one surface. A first step of preparing an antibacterial resin mixture by mixing a melamine resin, an aqueous dispersion of an antibacterial functional metal oxide, and a cationic curing agent; and
A second step of molding the antibacterial resin mixture to provide an antibacterial resin,
At least a portion of the cationic curing agent comprises a latent cationic curing agent that reacts after the formation of the antibacterial resin to bind the melamine resin and the antibacterial functional metal oxide. 8. The method of claim 7,
The second step is performed at 150° C. to 180° C. to prevent disappearance or deterioration of the antibacterial functional metal oxide in the antibacterial resin mixture. 8. The method of claim 7,
The second step includes drying or press molding of the antimicrobial resin mixture, an antibacterial functional board manufacturing method. 8. The method of claim 7,
After performing the second step, the reaction of the latent cationic curing agent is generated at a temperature lower than the second step performing temperature, antibacterial functional board manufacturing method.

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