KR102324070B1 - Kitchen furniture with excellent antibacterial and flame retardant properties, and method for manufacturing the same - Google Patents

Abstract

The present invention relates to kitchen furniture and a manufacturing method therefor. The kitchen furniture comprises: a wood core material whose surface has been modified with a silane-based coupling agent; an antimicrobial plastic plate which is adhesively installed on the surface of the wood core material that has been modified with the silane-based coupling agent; and an adhesive which is for bonding the wood core material whose surface has been modified with the silane-based coupling agent and the antimicrobial plastic plate. In addition, the kitchen furniture not only has excellent flame retardant properties, but also has excellent antimicrobial performance against biological contaminants such as bacteria, viruses and fungi.

Description

Kitchen furniture with excellent antibacterial and flame retardant properties, and method for manufacturing the same}

The present invention relates to kitchen furniture having excellent antibacterial performance and flame retardancy against bacteria, viruses and mold, and a method for manufacturing the same.

Since modern people spend most of their lives indoors, it is most important to create a comfortable and healthy indoor environment.

Recently, interest in indoor air environment has been increasing due to problems such as 'sick house syndrome' due to the release of harmful chemicals from building materials, and various eco-friendly building materials have been developed and used according to this increase in interest.

However, domestic interest and research on biological pollutants such as bacteria and fungi are relatively insignificant compared to research and interest in chemical pollutants such as volatile organic substances in building materials. If the elderly and weak in ability are continuously exposed to the above biological pollutants, it can cause serious diseases.

In addition, mold contamination on the surface of building materials not only greatly reduces the function and efficiency of the material, but also promotes corrosion and aging of the material itself, and in severe cases, greatly worsens the indoor living environment due to the generation of odors, resulting in the durability of the building. will shorten

Accordingly, research on building materials having excellent antibacterial performance against bacteria, viruses and fungi is continuously being conducted.

On the other hand, as a similar prior literature thereto, Republic of Korea No. 10-1266478 is presented.

Republic of Korea Patent Publication No. 10-1266478 (2013.05.15)

An object of the present invention for solving the above problems is to provide kitchen furniture having excellent flame retardancy and excellent antibacterial performance against bacteria, viruses and molds, and a method for manufacturing the same.

One aspect of the present invention for achieving the above object is a wood core material surface-modified with a silane-based coupling agent; an antibacterial plastic plate attached to the surface of the wood core material surface-modified with the silane-based coupling agent; and an adhesive for bonding the surface-modified wood core material and the antibacterial plastic plate with the silane-based coupling agent;

The antibacterial plastic plate is manufactured by extrusion molding a compounding composition comprising polyvinyl chloride (PVC), metal hydroxide-based particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, fillers and pigments. It's about kitchen furniture.

In one aspect, the kitchen furniture may be a sink, a bowl closet, a kitchen cabinet or a dining table.

In one aspect, the silane-based coupling agent may be a silane-based compound containing a double bond group, and more specifically, the silane-based compound containing a double bond group is vinyltrimethoxysilane, vinyltriethoxysilane, 3-acryloxypropyl Trimethoxysilane, 3-acryloxypropyltriethoxysilane, 3-acryloxypropylmethyldimethoxysilane, 3-acryloxypropylmethyldiethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryl It may be any one or two or more selected from the group consisting of oxypropyltriethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, and 3-methacryloxypropylmethyldiethoxysilane.

In one aspect, the metal hydroxide-based particles may be aluminum hydroxide, magnesium hydroxide, or a mixture thereof.

In one aspect, the surface-modified zinc oxide nanoparticles may have a surface coated with a thiol group-containing silane-based compound.

In one aspect, the thiol group-containing silane-based compound may be an oligomeric compound having two or more alkoxysilyl groups in the molecule.

In one aspect, the wood core material may be a particle board (PB), a medium-density fiberboard (MDF), or a core plywood (core plywood).

In one aspect, the adhesive may further include 4-isopropyltropolone.

In one aspect, the antibacterial plastic plate may further include any one or two or more selected from the group consisting of a stabilizer, a processing aid, and a flame retardant.

In another aspect of the present invention, a) polyvinyl chloride (PVC), metal hydroxide-based particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, a filler and a pigment composition comprising extruding molding to produce an antibacterial plastic plate; b) applying a silane-based coupling agent on the wood core material and drying the surface to modify the surface; And c) applying an adhesive on the surface-modified wood core material and adhering the antibacterial plastic plate; relates to a method of manufacturing kitchen furniture comprising a.

The kitchen furniture according to the present invention is an antibacterial manufactured by extruding a compounding composition comprising polyvinyl chloride (PVC), metal hydroxide-based particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, fillers and pigments. As it is manufactured by bonding a plastic plate to the entire surface of the wood core material surface-modified with a silane-based coupling agent, it is good because it can sustain flame-retardant and antibacterial performance even if there are scratches or scratches on the surface of the product.

In addition, the adhesive strength between the wood core material and the antibacterial plastic plate can be further improved by modifying the surface of the wood core material with a silane-based coupling agent, applying an adhesive, and adhering the antibacterial plastic plate.

In addition, by using a mixture of metal hydroxide-based particles and carbon black, the flame retardant effect can be improved compared to when only metal hydroxide-based particles are used alone, and excellent flame retardancy can be achieved even if the amount of metal hydroxide-based particles is greatly reduced good to have

In addition, by mixing and using the surface-modified zinc oxide nanoparticles and silver-zinc zeolite, excellent antibacterial performance against bacteria, viruses, and fungi can be secured, and bacteria, mold, etc., which are one of the causes of odor, are killed. The odor can be reduced accordingly, and the bacteria do not easily propagate on the surface of the product, which prevents cross-contamination of the bacteria from being transferred to other places, so it has the advantage of easy hygiene management such as food poisoning prevention.

Furthermore, as bacteria, mold, etc. are easily killed, corrosion and aging of the kitchen furniture itself can be prevented, thereby enhancing the durability of the kitchen furniture. have.

In addition, when processing a plastic plate by adding a general inorganic antibacterial agent to the PVC composition, there is a problem in that it is somewhat difficult to realize the surface gloss. It is possible to manufacture an antibacterial PVC plate with

1 is a sample photograph of a PVC plate among kitchen furniture manufactured according to Example 1 of the present invention.
Figure 2 is a picture of the antibacterial test for strain 1 (Staphylococcus aureus) of the PVC plate prepared according to Preparation Example 1 of the present invention.
3 is an antibacterial test photograph for strain 2 (E. coli) of the PVC plate prepared according to Preparation Example 1 of the present invention.
Figure 4 is a picture of the antibacterial degree test for strain 3 (pneumococcus pneumoniae) of the PVC plate prepared according to Preparation Example 1 of the present invention.
5 is a photograph of the antibacterial degree test for strain 4 (methicillin-resistant Staphylococcus aureus) of the PVC plate prepared according to Preparation Example 1 of the present invention.
6 is an antibacterial test photograph for strain 5 (Pseudomonas aeruginosa) of the PVC plate prepared according to Preparation Example 1 of the present invention.

Hereinafter, kitchen furniture and a manufacturing method thereof according to the present invention will be described in detail. The drawings introduced below are provided as examples so that the spirit of the present invention can be sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the drawings presented below and may be embodied in other forms, and the drawings presented below may be exaggerated to clarify the spirit of the present invention. At this time, if there is no other definition in the technical terms and scientific terms used, it has the meaning commonly understood by those of ordinary skill in the technical field to which this invention belongs, and the gist of the present invention in the following description and accompanying drawings Descriptions of known functions and configurations that may be unnecessarily obscure will be omitted.

One aspect of the present invention is a wood core material surface-modified with a silane-based coupling agent; an antibacterial plastic plate attached to the surface of the wood core material surface-modified with the silane-based coupling agent; and an adhesive for bonding the surface-modified wood core material and the antibacterial plastic plate with the silane-based coupling agent;

The antibacterial plastic plate is manufactured by extrusion molding a compounding composition comprising polyvinyl chloride (PVC), metal hydroxide-based particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, fillers and pigments. It relates to kitchen furniture, specifically to kitchen furniture such as a sink, a bowl cabinet, a kitchen cabinet or a dining table.

As such, the kitchen furniture according to the present invention is manufactured by extruding a compounding composition comprising polyvinyl chloride (PVC), metal hydroxide-based particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, fillers and pigments. As it is manufactured by bonding the antibacterial plastic plate on the surface-modified wood core material with a silane-based coupling agent, even if there are scratches or scratches on the surface of the product, the flame-retardant and antibacterial performance can be maintained.

In addition, as the surface of the wood core material is modified with a silane-based coupling agent, an adhesive is applied, and the antibacterial plastic plate is adhered, the adhesive strength between the surface-modified wood core material with a silane-based coupling agent and the antibacterial plastic plate will be further improved. can

In addition, by using a mixture of metal hydroxide-based particles and carbon black, the flame retardant effect can be improved compared to when only metal hydroxide-based particles are used alone, and excellent flame retardancy can be achieved even if the amount of metal hydroxide-based particles is greatly reduced good to have

In addition, by mixing and using the surface-modified zinc oxide nanoparticles and silver-zinc zeolite, excellent antibacterial performance against bacteria, viruses, and fungi can be secured, and bacteria, mold, etc., which are one of the causes of odor, are killed. The odor can be reduced accordingly, and the bacteria do not easily propagate on the surface of the product, which prevents cross-contamination of the bacteria from being transferred to other places, so it has the advantage of easy hygiene management such as food poisoning prevention.

Furthermore, as bacteria, mold, etc. are easily killed, corrosion and aging of the kitchen furniture itself can be prevented, thereby enhancing the durability of the kitchen furniture. have.

In addition, when processing a plastic plate by adding a general inorganic antibacterial agent to the PVC composition, there is a problem in that it is somewhat difficult to realize the surface gloss. It is possible to manufacture an antibacterial PVC plate with

Hereinafter, each component of the kitchen furniture to which antibacterial and flame retardant properties are added according to the present invention will be described in more detail.

First, the wood core material surface-modified with the silane coupling agent according to an example of the present invention is a component that becomes the core material of kitchen furniture, and may be surface-modified by applying a silane coupling agent to the surface of the wood core material and drying it. have. As such, by treating the surface of the wood core with a silane-based coupling agent, there is an advantage that the adhesive strength can be improved when the wood core material and the antibacterial plastic plate are bonded with an adhesive, and the water resistance of kitchen furniture can be further improved.

As a specific example, the wood core material may be particle board (PB), medium density fiberboard (MDF) or core plywood, and the particle board, medium density fiberboard or core plywood may be As long as it is conventionally used in the art, it can be used without particular limitation. The thickness of the particle board, medium-density fiber board or core plywood is also not particularly limited as long as it is a level commonly used in the art, and may be, for example, 10 to 50 mm, but the thickness and size can be adjusted according to the installation location and use. of course there is

On the other hand, the silane-based coupling agent may be used without particular limitation as long as it is a commonly known silane-based coupling agent, and preferably a silane-based compound containing a double bond group in terms of further improving the adhesive strength with an acrylic adhesive to be used later. can be used As a non-limiting example, the double bond-containing silane compound is vinyltrimethoxysilane, vinyltriethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-acryloxypropyltriethoxysilane, 3-acryloxy Propylmethyldimethoxysilane, 3-acryloxypropylmethyldiethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-methacryloxypropylmethyldimethoxysilane and 3 - It may be any one or two or more selected from the group consisting of methacryloxypropylmethyldiethoxysilane and the like.

Next, an antibacterial plastic plate according to an example of the present invention will be described. As described above, the antibacterial plastic plate is adhered to the surface of the wood core material surface-modified with a silane-based coupling agent, and specifically, polyvinyl chloride, metal hydroxide-based particles, carbon black, surface-modified zinc oxide nanoparticles , silver-zinc zeolite, fillers and pigments may be an antibacterial PVC plate prepared by extrusion molding.

The polyvinyl chloride (polyvinly chloride) is a base material constituting the antibacterial plastic plate, and can be used without particular limitation as long as it is commonly used in the art, specifically, for example, measured according to JIS K 6720-2 It may be a PVC resin having a degree of polymerization (PD) of 500 to 2000, more preferably 600 to 1000, but is not necessarily limited thereto.

The metal hydroxide-based particles and carbon black are to further improve the flame retardancy of the antibacterial plastic plate, and by using a mixture of the metal hydroxide-based particles and carbon black, the flame retardant effect can be improved compared to when only the metal hydroxide-based particles are used alone. There is an advantage, and excellent flame retardancy can be achieved even if the amount of metal hydroxide-based particles is greatly reduced.

As a specific example, the metal hydroxide-based particles may be aluminum hydroxide, magnesium hydroxide, or a mixture thereof, and particularly preferably magnesium hydroxide. Magnesium hydroxide not only has a better flame retardant effect per compounding amount than aluminum hydroxide, but also has a higher degree of flame retardancy when used in combination with carbon black.

The metal hydroxide-based particles may be added in an amount of 1 to 30 parts by weight based on 100 parts by weight of PVC, and more preferably 3 to 10 parts by weight. In this range, the flame retardant effect can be maximized when mixed with carbon black have. On the other hand, when the metal hydroxide-based particles are added in an amount of less than 1 part by weight, the effect of improving the flame retardancy is insignificant, and when it is added in an amount of more than 50 parts by weight, the workability of the antibacterial plastic plate may be deteriorated.

In addition, the carbon black is a material obtained by partially burning hydrocarbons or condensing them with high heat, and may be used without particular limitation as long as it is commonly mixed and used in the resin composition, and preferably has an average particle diameter of 1 to 100 nm, more It is preferable to use carbon black, preferably 10 to 50 nm. As such, it can be mixed well with PVC resin only by using very small nano-level carbon black.

The carbon black may be added in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of PVC, and more preferably in an amount of 0.3 to 3 parts by weight. It is possible to control the color development of the antibacterial plastic plate as desired. On the other hand, when carbon black is added in an amount of less than 0.1 parts by weight, the effect of improving flame retardancy is insignificant, and when it is added in an amount of more than 5 parts by weight, the antibacterial plastic plate does not develop a desired color and may become dark.

The surface-modified zinc oxide nanoparticles and silver-zinc zeolite according to an embodiment of the present invention are for imparting antibacterial properties to an antibacterial plastic plate, wherein the surface-modified zinc oxide nanoparticles and silver nanoparticles are supported on porous particles. As the complex is mixed and used, the effect of preventing death and propagation against bacteria, viruses and fungi is very good. In addition, there is an advantage that it is possible to implement a glossy antibacterial plastic plate by using them.

As a specific example, the surface-modified zinc oxide nanoparticles may have a surface coated with a thiol group-containing silane-based compound. As such, by modifying the zinc oxide nanoparticles with a silane-based compound containing a thiol group, aggregation of the zinc oxide nanoparticles into secondary particles is prevented, thereby securing superior antibacterial performance, compatibility with PVC can be improved, and antibacterial plastics It may not impair the workability of the plate.

The zinc oxide nanoparticles surface-modified with the thiol group-containing silane compound were prepared by adding 5 to 30 parts by weight of zinc oxide nanoparticles based on 100 parts by weight of the ol group-containing silane compound and stirring at a speed of 50 to 150 rpm for 30 to 120 minutes. It may be dried afterward, and the drying may be performed by hot air drying at a temperature of 50 to 70° C. for 1 to 24 hours.

In particular, preferably, the thiol group-containing silane-based compound may be an oligomeric compound having two or more alkoxysilyl groups in the molecule. As such, when a silane-based compound containing an oligomeric thiol group having a higher molecular weight than a silane-based monomer compound containing a thiol group is added, it is possible to more effectively prevent aggregation of zinc oxide nanoparticles, thereby maximizing antibacterial properties, Durability can also be improved.

The thiol group equivalent (mercapto equivalent) of the oligomeric thiol group-containing silane-based compound may be 100 to 1,000 g/mol, more preferably 400 to 800 g/mol. In this range, the zinc oxide nanoparticles are excellent in preventing agglomeration. As a more specific and non-limiting example, it may be any one or two or more selected from the group consisting of X-41-1805, X-41-1818, and X-41-1810 of Shin-Etsu Chemical.

Meanwhile, the average particle size of the zinc oxide nanoparticles may be 1 to 100 nm, more preferably 5 to 50 nm. In this range, it can be well mixed with PVC resin and exhibit excellent antibacterial activity.

The surface-modified zinc oxide nanoparticles may be added in an amount of 1 to 30 parts by weight, preferably 5 to 15 parts by weight, based on 100 parts by weight of PVC. When mixed with silver-zinc zeolite in such a range, the antibacterial effect can be maximized and the workability of the antibacterial plastic plate may not be reduced. On the other hand, when the surface-modified zinc oxide nanoparticles are added in an amount of less than 1 part by weight, the antibacterial effect improving effect is insignificant, and when added in an amount of more than 30 parts by weight, the workability of the antibacterial plastic plate may be deteriorated.

In addition, the silver-zinc zeolite is ^{an inorganic complex in which sodium ions (Na +} ) of the zeolite are exchanged with silver ions (Ag ⁺ ) and zinc ions (Zn ²⁺ ) to contain silver ions and zinc ions, silver ions and Zinc ions have an advantage in that they can kill most biological contaminants such as bacteria, fungi, and viruses as they have different antibacterial mechanisms from the zinc oxide nanoparticles.

In the silver-zinc zeolite, each of silver ions and zinc ions in the silver-zinc zeolite is included in an amount of 0.1 to 10 wt%, and more preferably 1 to 5 wt%. In this range, the antibacterial performance improvement effect is excellent. On the other hand, when the content of each of silver ions and zinc ions is less than 0.1 wt%, the antibacterial performance improvement effect is insignificant, and even if it exceeds 10 wt%, there is no further improvement in antibacterial performance, which is not preferable.

The silver-zinc zeolite may be added in an amount of 0.5 to 5 parts by weight, preferably 1 to 3 parts by weight, based on 100 parts by weight of PVC. When mixed with the surface-modified zinc oxide nanoparticles in this range, the antibacterial effect can be maximized. On the other hand, when the silver-zinc zeolite is added in an amount of less than 0.5 parts by weight, the antibacterial effect improving effect is insignificant, and when it is added in an amount of more than 5 parts by weight, silver ions may be excessively eluted, which is not preferable.

The filler according to an embodiment of the present invention refers to an extender filler added in large quantities for the purpose of cost reduction or a reinforcing filler added to improve mechanical properties or processability, in addition to PVC, which is a main raw material, in the art. If it is conventionally used, it may be used without particular limitation, and as a specific example, it may be any one or two or more selected from the group consisting of calcium carbonate, talc, mica, silica, and glass fiber.

The filler may be added in an amount of 10 to 100 parts by weight based on 100 parts by weight of PVC, and more preferably 20 to 50 parts by weight. In this range, the workability is good, and the physical properties of the manufactured antibacterial plastic plate may not be deteriorated.

The pigment according to an embodiment of the present invention is to improve aesthetics by imparting various colors to the antibacterial plastic plate, and may be used without particular limitation as long as it is commonly used in the art. For example, titanium dioxide may be added as a white pigment or a colored pigment may be added.

The amount of the pigment can be adjusted differently depending on the type of pigment used and the degree of color development, and as a non-limiting example, it may be added in an amount of 1 to 20 parts by weight based on 100 parts by weight of PVC.

In addition to this, the antibacterial plastic plate may contain various additives according to the purpose, and as a specific example, the antibacterial plastic plate further includes any one or two or more selected from the group consisting of a stabilizer, a processing aid, and a flame retardant. can do.

The stabilizer is for improving workability during processing of antibacterial plastic plates, and may be used without particular limitation as long as it is commonly used in the art, and may preferably be a tin mercaptide-based stabilizer, and a more specific example is dimethyltin. It may be bis(2-ethylhexyl mercaptoacetate, methyltin tris(2-ethylhexyl mercaptoacetate, or a mixture thereof), but is not necessarily limited thereto.

The stabilizer may be added in an amount of 1 to 10 parts by weight, preferably 2 to 8 parts by weight, based on 100 parts by weight of PVC.

The processing aid is also for improving the workability during processing of the antibacterial plastic plate, and may be used without particular limitation as long as it is commonly used in the art, and is 0.1 to 8 parts by weight, preferably 1 to 5 parts by weight based on 100 parts by weight of PVC. It may be added in parts by weight.

The flame retardant is a material that suppresses the generation of smoke during combustion, and may be used without particular limitation as long as it is commonly used in the art, for example, zinc borate or the like. The flame retardant may be added in an amount of 1 to 20 parts by weight, more preferably 3 to 10 parts by weight, based on 100 parts by weight of PVC. In such a range, it is possible to effectively suppress the generation of smoke during combustion.

The thickness of the antibacterial plastic plate is not particularly limited as long as it is a level commonly used in the art, and may be, for example, 0.5 to 2 mm, but the thickness and size can be adjusted according to the installation location and need, of course.

Next, an adhesive according to an example of the present invention will be described. As described above, the adhesive according to the present invention is for firmly bonding the surface-modified wood core material with the silane-based coupling agent and the antibacterial plastic plate, and excellent adhesion between the surface-modified wood core material surface-modified with the silane-based coupling agent and the antibacterial plastic plate. If it can have, the type is not particularly limited, but an acrylic adhesive may be preferably used. When an acrylic adhesive is used to bond the surface-modified wood core material and the antibacterial plastic plate with the silane-based coupling agent, the two substrates are firmly adhered to each other and may not be easily separated.

As a more specific example, the adhesive is a plasticizer such as 25 to 55% by weight of vinyl acetate-acrylic copolymer, 1 to 15% by weight of polyvinyl alcohol, and diisononyl-cyclohexane (4)-1,2-dicarboxylate. It may include 0.1 to 10% by weight and 35 to 65% by weight of water.

Furthermore, the adhesive according to an embodiment of the present invention may further include 4-isopropyltropolone. Through this, it is possible to effectively block the growth of mold in the kitchen furniture due to the humid environment of the kitchen.

When using the 4-isopropyltropolone-added adhesive, 25 to 55% by weight of vinyl acetate-acrylic copolymer, 0.1 to 3% by weight of 4-isopropyltropolone, 10 to 20% by weight of polyvinyl alcohol, diisononyl -Cyclohexane (4)-1,2-dicarboxylate, such as 0.1 to 10% by weight of a plasticizer and 35 to 45% by weight of water may be included. In this range, 4-isopropyltropolone may be well mixed with the adhesive and may not deteriorate the adhesive force.

In addition, another aspect of the present invention relates to a method for manufacturing the aforementioned kitchen furniture, specifically a) polyvinyl chloride (PVC), metal hydroxide-based particles, carbon black, surface-modified zinc oxide nanoparticles, silver- manufacturing an antibacterial plastic sheet by extruding a compounding composition comprising zinc zeolite, a filler and a pigment; b) applying a silane-based coupling agent on the wood core material and drying the surface to modify the surface; and c) applying an adhesive on the surface-modified wood core material and adhering the antibacterial plastic plate. At this time, since the specific kind and blending amount of each component is the same as described above, the overlapping description will be omitted.

In step a), when the compounding composition for an antibacterial plastic plate is prepared with the composition and content, the final antibacterial plastic plate product can be obtained through post-processing such as extruding the compounding composition and then cutting, and extrusion molding and post-processing are usually It can be carried out according to the phosphorus method.

In step b), when applying the silane-based coupling agent on the wood core, apply the liquid silane-based coupling agent as it is, or mix the silane-based coupling agent with a solvent to adjust the appropriate viscosity and then apply this coating solution. A coating method and the like can be used. In this case, the application method may vary depending on the viscosity, and spray application or an application method using a brush or roller, etc. may be used.

Thereafter, the surface of the wood core material surface-modified with a silane-based coupling agent may be dried through hot air drying or natural drying. During hot air drying, it may be dried for 10 to 200 minutes with hot air at 50 to 100° C., but is not necessarily limited thereto.

Hereinafter, a kitchen furniture and a manufacturing method thereof according to the present invention will be described in more detail through examples. However, the following examples are only a reference for describing the present invention in detail, and the present invention is not limited thereto, and may be implemented in various forms.

Also, unless otherwise defined, all technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of effectively describing particular embodiments only and is not intended to limit the invention. In addition, the unit of additives not specifically described in the specification may be weight %.

[Production Example 1]

Based on 100 parts by weight of polyvinyl chloride (PVC) resin (Hanwha Chemical, trade name P-700), 8 parts by weight of magnesium hydroxide, 2 parts by weight of carbon black, the surface-modified zinc oxide nanoparticles of Preparation Example 1 and the surface-modified 10 parts by weight of silver-zinc zeolite (surface-modified zinc oxide nanoparticles: weight ratio of surface-modified silver-zinc zeolite 8: 2), 30 parts by weight of calcium carbonate, 15 parts by weight of titanium dioxide, tin mercaptide stabilizer (KD Chem) A PVC composition consisting of 5 parts by weight of DMT-1800), 3 parts by weight of a processing aid (LG Chem, trade name PA950), and 5 parts by weight of a flame retardant (K-TOP) is extruded in a conventional manner Processed to prepare antibacterial PVC plate samples.

In this case, the surface-modified zinc oxide nanoparticles and the surface-modified silver-zinc zeolite are an antibacterial particle mixture (Sinanen Zeomic, trade name Zeomic X-type) containing 80% by weight of zinc oxide nanoparticles and 20% by weight of silver-zinc zeolite. Mixture) 20 g of an oligomeric thiol group-containing silane compound (Shin-Etsu Chemical Co., Ltd., trade name X-41-1805) was added to 100 g, stirred at a speed of 100 rpm for 60 minutes, and then at a temperature of 50° C. for 2 hours. It was prepared by hot air drying.

[Characteristic evaluation method]

1) Plasticizer detection test: Measured according to KS M 1991:2016 (GC/MS), di(ethylhexyl)phthalate (DEHP), di-n-octylphthalate (DNOP), di-n-butylphthalate (DBP) ), butylbenzylphthalate (BBP), diisononylphthalate (DINP), diethylphthalate (DEP) and diisobutylphthalate (DIBP) were tested for detection.

2) Smoke density test: Measured according to ISO 5659 (heat flux: 2.5 kW/m2).

3) Flame-retardant test: Measured according to KOFEIS 1001.

4) Pollutant emission test: Samples were retaken according to the guidelines for the construction material pollutant emission test, and the emission amount of total volatile organic compounds (TVOC), toluene and formaldehyde (mg/(m 2 h)) was measured.

5) Antimicrobial test: Antibacterial test was conducted according to ISO 22196: 2011.

^{In detail, the following strains 1 to 5 were inoculated at 1.4 × 10 4} CFU/cm 2 in a PVC plate sample having a size of 50 mm in width and length, and then cultured at (35±1)° C. and 90% relative humidity for 24 hours to final bacteria The number and antibacterial activity log (log) were measured. At this time, the antibacterial activity value was calculated as log(B/A), A is the number of bacteria in the PVC plate sample after 24 hours, and B is the number of bacteria in the control (blank) after 24 hours.

The results are shown in Table 2 and FIGS. 2 to 6 below.

Strain 1: Staphylococcus aureus ATCC 6538P

Strain 2: Escherichia coli ATCC 8739

Strain 3: Klebsiella pneumoniae ATCC 4352

Strain 4: Methicillin-resistant Staphylococcus aureus (methicillin resistant Staphylococcus aureus- ATCC 33591)

Strain 5: Pseudomonas aeruginosa ATCC 27853

Test Items standard Test result plasticizer detection test DEHP - Not detected (detection limit 0.005%) BBP - Not detected (detection limit 0.005%) DBP - Not detected (detection limit 0.005%) DIBP - Not detected (detection limit 0.005%) DNOP - Not detected (detection limit 0.005%) DINP - Not detected (detection limit 0.005%) DEP - Not detected (detection limit 0.005%) smoke density test Dm _(corr) 400 or less 342.4 flame retardant
exam afterflame time within 5 seconds 0 rest time within 20 seconds 0 carbonation area within 40 cm2 22.7 carbonization length within 20 cm 6.0 pollution
substance release
exam TVOC 4.0 and below 0.007 toluene 0.08 or less Non-detection (detection limit 0.0005) formaldehyde 0.02 or less Non-detection (detection limit 0.0005)

As shown in Table 1, it was confirmed that the PVC plate of the present invention has excellent flame retardant performance, and is very environmentally friendly because plasticizers and volatile organic compounds (VOCs) are not released.

blank Sample strain 1 Initial number of bacteria (CFU/㎠) 1.4 × 10 ⁴ Number of bacteria after 24 hours (CFU/㎠) 2.5 × 10 ⁴ < 0.63 antibacterial activity - 4.5 strain 2 Initial number of bacteria (CFU/㎠) 1.4 × 10 ⁴ Number of bacteria after 24 hours (CFU/㎠) 1.1 × 10 ⁶ < 0.63 antibacterial activity - 6.2 strain 3 Initial number of bacteria (CFU/㎠) 1.4 × 10 ⁴ Number of bacteria after 24 hours (CFU/㎠) 2.6 × 10 ⁵ < 0.63 antibacterial activity - 5.6 strain 4 Initial number of bacteria (CFU/㎠) 1.4 × 10 ⁴ Number of bacteria after 24 hours (CFU/㎠) 6.9 × 10 ⁴ < 0.63 antibacterial activity - 5.0 strain 5 Initial number of bacteria (CFU/㎠) 1.4 × 10 ⁴ Number of bacteria after 24 hours (CFU/㎠) 2.6 × 10 ⁵ < 0.63 antibacterial activity - 5.6

In addition, as shown in Table 2 and FIGS. 2 to 6, it was confirmed that the antibacterial PVC plate of the present invention had very excellent antibacterial performance against all bacteria of strains 1 to 5.

[Preparation Examples 2 to 5]

All processes were performed in the same manner as in Preparation Example 1 except that the content of each component in the PVC composition was changed as shown in Table 3 below.

[Comparative Preparation Example 1]

Antibacterial particle mixture (Sinanen Zeomic, trade name Zeomic X-) comprising 80 wt% of surface-modified zinc oxide nanoparticles and 20 wt% of silver-zinc zeolite and 80 wt% of non-surface-modified zinc oxide nanoparticles instead of surface-modified zinc oxide nanoparticles and surface-modified silver-zinc zeolite type Mixture) was used as it is.

[Comparative Preparation Examples 2 and 3]

All processes were carried out in the same manner as in Preparation Example 1 except that the composition and content of each component in the PVC composition were changed as shown in Table 3 below.

phr manufacturing example
One manufacturing example
2 manufacturing example
3 manufacturing example
4 manufacturing example
5 Comparative Preparation Example
One Comparative Preparation Example
2 Comparative Preparation Example
3 PVC 100 (left) (left) (left) (left) (left) (left) (left) Mg(OH) ₂ 8 0.1 One 30 50 8 10 10 carbon black 2 0.01 0.1 5 10 2 - - ZnO 8 0.1 2 20 40 8 - 8 Ag-Zn zeolite 2 0.1 0.5 5 10 2 - 2 CaCO ₃ 30 (left) (left) (left) (left) (left) (left) (left) TiO ₂ 15 (left) (left) (left) (left) (left) (left) (left) stabilizator 5 (left) (left) (left) (left) (left) (left) (left) processing aid 3 (left) (left) (left) (left) (left) (left) (left) deterrent 5 (left) (left) (left) (left) (left) (left) (left)

Table 4 shows the processability, flame retardancy test and antibacterial activity test results of the PVC plate samples prepared in Preparation Examples 1 to 5, and Comparative Preparation Examples 1 to 3, respectively.

Test Items manufacturing example
One manufacturing example
2 manufacturing example
3 manufacturing example
4 manufacturing example
5 Comparative Preparation Example
One Comparative Preparation Example
2 Comparative Preparation Example
3 Extrusion Processability Great Great Great middle error error Great Great flame retardant afterflame time 0 3.6 0 0 exam
impossible exam
impossible 0 0 rest time 0 14 4 0 3 2 carbonation area 22.7 57.2 31.4 16.5 28.4 27.0 carbonization length 6.0 13.3 8.1 4.2 7.3 6.9 antibacterial strain 1 4.5 2.1 3.8 4.5 exam
impossible exam
impossible (Increase in the number of bacteria) 4.2 strain 2 6.2 2.5 5.4 6.4 (Increase in the number of bacteria) 6.0

As a result, as shown in Tables 3 and 4, 1 to 30 parts by weight of magnesium hydroxide, 0.1 to 5 parts by weight of carbon black, 1 to 30 parts by weight of surface-modified zinc oxide and 0.5 to 5 parts by weight of surface-modified silver-zinc zeolite In the case of Preparation Examples 1, 3 and 4 added in the range of parts by weight, the flame retardancy and antibacterial properties were excellent, in particular 3 to 10 parts by weight of magnesium hydroxide, 0.3 to 3 parts by weight of carbon black, 5 to 15 parts by weight of surface-modified zinc oxide and Preparation Example 1, which was added in an amount of 1 to 3 parts by weight of the surface-modified silver-zinc zeolite, exhibited excellent processability and excellent flame retardancy and antibacterial properties. On the other hand, Preparation Example 3 had a slight decrease in flame retardancy compared to Preparation Example 1, and Preparation Example 4 had a disadvantage in that processability was slightly decreased.

On the other hand, in the case of Preparation Example 2 in which each component was added below the content range, both the flame retardancy and antibacterial properties were not as good as in Preparation Example 1, and in the case of Preparation Example 5 in which each component was added above the content range, the processability was greatly reduced. Molding was not possible.

Also, in Comparative Preparation Example 1, in which non-surface-modified zinc oxide and silver-zinc zeolite mixed powder were added, workability was greatly reduced, and molding was impossible.

In Comparative Preparation Example 2, flame retardancy was slightly lowered as only magnesium hydroxide was added without carbon black, and antibacterial performance was not shown as non-surface-modified zinc oxide and silver-zinc zeolite mixed powder was not added.

In Comparative Preparation Example 3, flame retardancy was slightly lowered as only magnesium hydroxide was added without carbon black.

[Examples 1 to 5]

After spraying 3-methacryloxypropyltrimethoxysilane (viscosity 2 cSt) on one surface of the particle board, hot air drying was performed at a temperature of 70° C. for 1 hour to prepare a surface-modified particle board.

Next, after applying an adhesive to one surface (surface-modified surface) of the surface-modified particle board, the PVC plates prepared in Preparation Examples 1 to 5, respectively, were adhered. At this time, as the adhesive, 40 wt% of vinyl acetate-acrylic copolymer, 1 wt% of 4-isopropyltropolone, 15 wt% of polyvinyl alcohol, diisononyl-cyclohexane (4)-1,2-dicarboxylate An acrylic adhesive composed of 3% by weight and the remaining amount of water was used.

[Comparative Example 1]

It proceeded in the same manner as in Example 1 except that a particle board that was not surface-modified was used.

Peel adhesive strength (T peel strength, 23° C.) of the kitchen furniture of Example 1 and Comparative Example 1 prepared above was evaluated using a tensile tester.

As a result, the peel adhesive strength of Example 1 was 25.1 kgf/25 mm, and the peel adhesive strength of Comparative Example 1 was 20.3 kgf/25 mm. As such, it was confirmed that by surface-modifying the surface of the particle board with a silane-based coupling agent, the adhesion between the particle board and the acrylic adhesive and the antibacterial plastic plate was improved, thereby ensuring excellent peel adhesive strength.

Although the present invention has been described through the specific matters and limited examples as described above, these are only provided to help a more general understanding of the present invention, and the present invention is not limited to the above examples, and the present invention pertains to Various modifications and variations are possible from these descriptions by those of ordinary skill in the art.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described later, but also all those with equivalent or equivalent modifications to the claims will be said to belong to the scope of the spirit of the present invention. .

Claims (10)

Wood core material surface-modified with a silane-based coupling agent;
an antibacterial plastic plate attached to the surface of the wood core material surface-modified with the silane-based coupling agent; and
An adhesive for bonding the surface-modified wood core material and the antibacterial plastic plate with the silane-based coupling agent; as kitchen furniture comprising,
The antibacterial plastic plate is manufactured by extrusion molding a compounding composition comprising polyvinyl chloride (PVC), metal hydroxide-based particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, fillers and pigments. and
The surface-modified zinc oxide nanoparticles are surface-coated with a thiol group-containing silane-based compound, antibacterial and flame-retardant added kitchen furniture.
The method of claim 1,
The kitchen furniture is a sink, a bowl cabinet, a kitchen cabinet or a dining table, kitchen furniture with antibacterial and flame retardant properties added.
The method of claim 1,
The silane-based coupling agent is a double bond-containing silane-based compound, antibacterial and flame-retardant added kitchen furniture.
4. The method of claim 3,
The double bond-containing silane compound is vinyltrimethoxysilane, vinyltriethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-acryloxypropyltriethoxysilane, 3-acryloxypropylmethyldimethoxysilane, 3-acryloxypropylmethyldiethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-methacryloxypropylmethyldimethoxysilane and 3-methacryloxypropylmethyl Any one or two or more selected from the group consisting of diethoxysilane, antibacterial and flame-retardant added kitchen furniture.
The method of claim 1,
The metal hydroxide-based particles are aluminum hydroxide, magnesium hydroxide, or a mixture thereof, antibacterial and flame-retardant added kitchen furniture.
delete The method of claim 1,
The thiol group-containing silane-based compound is an oligomeric compound having two or more alkoxysilyl groups in the molecule, antibacterial and flame-retardant added kitchen furniture.
The method of claim 1,
The wood core material is particle board (PB), medium density fiberboard (MDF) or core plywood (core plywood), antibacterial and flame-retardant added kitchen furniture.
The method of claim 1,
The adhesive further comprises 4-isopropyltropolone, antibacterial and flame-retardant added kitchen furniture.
a) preparing an antibacterial plastic plate by extruding a compounding composition comprising polyvinyl chloride (PVC), metal hydroxide-based particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, fillers and pigments;
b) applying a silane-based coupling agent on the wood core material and drying the surface to modify the surface; and
c) applying an adhesive on the surface-modified wood core material and adhering the antibacterial plastic plate;
The surface-modified zinc oxide nanoparticles are surface-coated with a thiol group-containing silane-based compound, the method of manufacturing a kitchen furniture with antibacterial and flame-retardant properties added.

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