KR102590052B1 - Cubicle panel with excellent antibacterial and flame retardant properties, and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a wood core whose surface has been modified with a silane-based coupling agent; An antibacterial plastic plate attached to the surface of the wood core surface-modified with the silane-based coupling agent; and an adhesive for bonding a wooden core surface-modified with the silane-based coupling agent to an antibacterial plastic plate. The cubicle panel not only has excellent flame retardancy, but also has excellent flame retardancy and is resistant to bacteria, It has excellent antibacterial performance against biological contaminants such as viruses and mold.

Description

Cubicle panel with excellent antibacterial and flame retardant properties and method for manufacturing the same {Cubicle panel with excellent antibacterial and flame retardant properties, and method for manufacturing the same}

The present invention relates to a cubicle panel with excellent antibacterial performance and flame retardancy against bacteria, viruses, mold, etc., and a method of manufacturing the same.

Modern people spend most of their lives indoors, so creating a comfortable and healthy indoor environment is of utmost importance.

Recently, interest in the indoor air environment has been increasing due to problems such as ‘sick house syndrome’ caused by the release of harmful chemicals from building materials, and various eco-friendly building materials are being developed and used in response to this increasing interest.

However, compared to the interest and research on chemical contaminants such as volatile organic compounds in building materials, domestic interest and research on biological contaminants such as bacteria and fungi are relatively insufficient, especially in the immune system. If weak elderly people are continuously exposed to the above biological pollutants, serious diseases may occur.

In addition, mold contamination that occurs on the surface of building materials not only significantly reduces the function and efficiency of the material, but also accelerates corrosion and aging of the material itself, and in severe cases, it greatly deteriorates the indoor living environment due to the generation of bad odors, ultimately reducing the durability of the building. is shortened.

Accordingly, research on building materials with excellent antibacterial properties against bacteria, viruses, and mold is continuously being conducted.

Meanwhile, Republic of Korea No. 10-1266478 is presented as a similar prior document.

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

The purpose of the present invention to solve the above problems is to provide a cubicle panel that has excellent flame retardancy and excellent antibacterial performance against bacteria, viruses, and mold, and a method of manufacturing the same.

One aspect of the present invention for achieving the above object is a wood core surface modified with a silane-based coupling agent; An antibacterial plastic plate attached to the surface of the wood core surface-modified with the silane-based coupling agent; And an adhesive for bonding the wood core surface-modified with the silane-based coupling agent to the antibacterial plastic plate. A cubicle panel comprising a.

The antibacterial plastic plate is manufactured by extrusion molding a composition containing polyvinyl chloride (PVC), metal hydroxide particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, fillers, and pigments. This is about panels for cubicles.

In one aspect, the silane-based coupling agent may be a silane-based compound containing a double bond group. More specifically, the silane-based compound containing a double bond group is vinyltrimethoxysilane, vinyltriethoxysilane, and 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 the above aspect, the metal hydroxide-based particles may be aluminum hydroxide, magnesium hydroxide, or a mixture thereof.

In one aspect, the surface of the surface-modified zinc oxide nanoparticles may be 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 the above aspect, the antibacterial plastic plate may further include any one or two or more selected from the group consisting of stabilizers, processing aids, and suppressants.

In addition, another aspect of the present invention is a) extrusion molding a blended composition containing polyvinyl chloride (PVC), metal hydroxide particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, fillers, and pigments. manufacturing an antibacterial plastic plate; b) applying a silane-based coupling agent to the wood core and drying it to modify the surface; and c) applying an adhesive on the surface-modified wood core and adhering the antibacterial plastic plate. It relates to a method of manufacturing a cubicle panel, including a step.

The cubicle panel according to the present invention is manufactured by extrusion molding a composition containing polyvinyl chloride (PVC), metal hydroxide particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, fillers, and pigments. As it is manufactured by adhering an antibacterial plastic plate to the entire surface of a wood core that has been surface modified with a silane-based coupling agent, the flame retardant and antibacterial performance can be maintained even if there are scratches or scratches on the product surface.

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

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

In addition, by using a mixture of the surface-modified zinc oxide nanoparticles and silver-zinc zeolite, excellent antibacterial performance against bacteria, viruses, and mold can be secured, and bacteria, mold, etc., which are one of the causes of bad odor, are killed. This has the advantage of reducing odor and making it easier to manage hygiene, such as preventing food poisoning, by preventing cross-contamination where bacteria are transferred to other places as bacteria do not easily multiply on the product surface.

Furthermore, as bacteria, mold, etc. are easily killed, corrosion and aging of the panel material itself can be prevented, improving the durability of the panel, and the panel can be used for a long period of time, resulting in cost savings such as panel replacement costs.

In addition, when processing a plastic plate by adding a general inorganic antibacterial agent to a PVC composition, it is somewhat difficult to achieve surface gloss. However, gloss can be achieved by using a mixture of the surface-modified zinc oxide nanoparticles and silver-zinc zeolite. It is possible to manufacture antibacterial PVC plates, which has the advantage of being able to create high-gloss panels.

Figure 1 is a sample photograph of a PVC plate among cubicle panels manufactured according to Example 1 of the present invention.
Figure 2 is a photograph of an antibacterial test against strain 1 (Staphylococcus aureus) of a PVC plate manufactured according to Preparation Example 1 of the present invention.
Figure 3 is a photograph of an antibacterial test against strain 2 (E. coli) of a PVC plate manufactured according to Preparation Example 1 of the present invention.
Figure 4 is a photograph of an antibacterial test against strain 3 (Bacillus pneumoniae) of a PVC plate manufactured according to Preparation Example 1 of the present invention.
Figure 5 is a photograph of an antibacterial test against strain 4 (methicillin-resistant Staphylococcus aureus) of a PVC plate manufactured according to Preparation Example 1 of the present invention.
Figure 6 is a photograph of an antibacterial test against strain 5 (Pseudomonas aeruginosa) of a PVC plate manufactured according to Preparation Example 1 of the present invention.

Hereinafter, the cubicle panel and its manufacturing method according to the present invention will be described in detail. The drawings introduced below are provided as examples so that the idea 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 and scientific terms used, they have meanings commonly understood by those skilled in the art in the technical field to which this invention pertains, and the gist of the present invention is summarized in the following description and accompanying drawings. Descriptions of known functions and configurations that may be unnecessarily obscure are omitted.

One aspect of the present invention is a wood core surface modified with a silane-based coupling agent; An antibacterial plastic plate attached to the surface of the wood core surface-modified with the silane-based coupling agent; And an adhesive for bonding the wood core surface-modified with the silane-based coupling agent to the antibacterial plastic plate. A cubicle panel comprising a.

The antibacterial plastic plate is manufactured by extrusion molding a composition containing polyvinyl chloride (PVC), metal hydroxide particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, fillers, and pigments. This is about panels for cubicles.

In this way, the cubicle panel according to the present invention is made by extruding a composition containing polyvinyl chloride (PVC), metal hydroxide particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, fillers, and pigments. As the manufactured antibacterial plastic plate is bonded to a wood core whose surface has been modified with a silane-based coupling agent, the flame retardant and antibacterial performance can be maintained even if there are scratches or scratches on the product surface.

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

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

In addition, by using a mixture of the surface-modified zinc oxide nanoparticles and silver-zinc zeolite, excellent antibacterial performance against bacteria, viruses, and mold can be secured, and bacteria, mold, etc., which are one of the causes of bad odor, are killed. This has the advantage of reducing odor and making it easier to manage hygiene, such as preventing food poisoning, by preventing cross-contamination where bacteria are transferred to other places as bacteria do not easily multiply on the product surface.

Furthermore, as bacteria, mold, etc. are easily killed, corrosion and aging of the panel material itself can be prevented, improving the durability of the panel, and the panel can be used for a long period of time, resulting in cost savings such as panel replacement costs.

In addition, when processing a plastic plate by adding a general inorganic antibacterial agent to a PVC composition, it is somewhat difficult to achieve surface gloss. However, gloss can be achieved by using a mixture of the surface-modified zinc oxide nanoparticles and silver-zinc zeolite. It is possible to manufacture antibacterial PVC plates, which has the advantage of being able to create high-gloss panels.

Hereinafter, each component of the cubicle panel with antibacterial and flame retardant properties according to the present invention will be described in more detail.

First, the wood core material surface-modified with a silane-based coupling agent according to an example of the present invention is a component that becomes the core material of a cubicle panel, and is surface-modified by applying a silane-based coupling agent to the surface of the wood core material and then drying it. You can. In this way, by treating the surface of the wood core with a silane-based coupling agent, the adhesive strength can be improved when bonding the wood core and antibacterial plastic plate with an adhesive, and the water resistance of the cubicle panel can be further improved.

As a specific example, the wood core may be particle board (PB) or core plywood, and the particle board or core plywood may be used without particular limitation as long as it is commonly used in the industry. . The thickness of the particleboard or core plywood is not particularly limited as long as it is at a level commonly used in the industry. For example, it may be 10 to 50 mm, but of course the thickness and size can be adjusted depending on the installation location and needs. .

Meanwhile, the silane-based coupling agent can be used without particular limitation as long as it is a commonly known silane-based coupling agent, and is preferably a silane-based coupling agent containing a double bond group in order to further improve the adhesive strength with the acrylic water-based adhesive to be used later. Compounds can be used. As a non-limiting example, the silane-based compound containing a double bond group includes vinyltrimethoxysilane, vinyltriethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-acryloxypropyltriethoxysilane, and 3-acryloxysilane. 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, etc.

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

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

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

As a specific example, the metal hydroxide particles may be aluminum hydroxide, magnesium hydroxide, or a mixture thereof, and magnesium hydroxide is particularly preferred. Magnesium hydroxide not only has a better flame retardant effect per mixing amount than aluminum hydroxide, but the degree of flame retardancy improvement is even higher 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, or more preferably, 3 to 10 parts by weight, based on 100 parts by weight of PVC. In this range, the flame retardant effect can be maximized when mixed with carbon black. there is. On the other hand, when the metal hydroxide-based particles are added in less than 1 part by weight, the effect of improving flame retardancy is minimal, and when added in excess of 50 parts by weight, the processability of the antibacterial plastic plate may be reduced.

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

The carbon black may be added in an amount of 0.1 to 5 parts by weight, or more preferably, 0.3 to 3 parts by weight based on 100 parts by weight of PVC. In this range, the flame retardant effect can be maximized when mixed with metal hydroxide particles. You can adjust the color development of the antibacterial plastic plate to your liking. On the other hand, when carbon black is added in less than 0.1 parts by weight, the effect of improving flame retardancy is minimal, and when it is added in excess of 5 parts by weight, the antibacterial plastic plate may not develop the desired color and may become dark.

The surface-modified zinc oxide nanoparticles and silver-zinc zeolite according to an example of the present invention are used to impart antibacterial properties to an antibacterial plastic plate, and the surface-modified zinc oxide nanoparticles and silver nanoparticles are inorganic supported on porous particles. By using a mixture of complexes, the effect of killing and preventing proliferation of bacteria, viruses, and molds is very excellent. In addition, there is an advantage of using them to create a glossy antibacterial plastic plate.

As a specific example, the surface-modified zinc oxide nanoparticles may have a surface coated with a silane-based compound containing a thiol group. In this way, by modifying zinc oxide nanoparticles with a silane-based compound containing a thiol group, the zinc oxide nanoparticles are prevented from agglomerating into secondary particles, thereby ensuring better antibacterial performance, improving miscibility with PVC, and antibacterial plastic. The processability of the plate may not be impaired.

The zinc oxide nanoparticles surface-modified with the thiol group-containing silane-based compound were prepared by adding 5 to 30 parts by weight of zinc oxide nanoparticles relative to 100 parts by weight of the silane-based compound containing an ol group and stirring for 30 to 120 minutes at a speed of 50 to 150 rpm. After drying, the drying may be carried out 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. In this way, when adding a silane-based compound containing an oligomeric thiol group with a larger molecular weight than a silane-based monomer compound containing a thiol group, the agglomeration of zinc oxide nanoparticles can be more effectively prevented, thereby maximizing antibacterial properties and improving the flame resistance and flame resistance of antibacterial plastic plates. It's good that durability can also be improved.

The thiol group equivalent of the oligomeric thiol group-containing silane-based compound may be 100 to 1,000 g/mol, and more preferably 400 to 800 g/mol. In this range, the agglomeration prevention effect of zinc oxide nanoparticles is excellent. 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 manufactured by Shin-Etsu Chemical Industries.

Meanwhile, the average particle size of the zinc oxide nanoparticles may be 1 to 100 nm, and more preferably 5 to 50 nm. Within 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, more preferably 5 to 15 parts by weight, based on 100 parts by weight of PVC. In this range, when mixed with silver-zinc zeolite, the antibacterial effect can be maximized without deteriorating the processability of the antibacterial plastic plate. On the other hand, when surface-modified zinc oxide nanoparticles are added in an amount of less than 1 part by weight, the effect of improving antibacterial activity is minimal, and when added in an amount exceeding 30 parts by weight, the processability of the antibacterial plastic plate may be reduced.

In addition, the silver-zinc zeolite is an inorganic complex containing silver ions and zinc ions by exchanging the sodium ions (Na ⁺ ) of the zeolite with silver ions (Ag ⁺ ) and zinc ions (Zn ²⁺ ). Zinc ions have the advantage of being able to kill most biological contaminants such as bacteria, mold, and viruses because they have a different antibacterial mechanism from the zinc oxide nanoparticles.

The silver-zinc zeolite may contain 0.1 to 10 wt% of silver ions and zinc ions, respectively, and more preferably 1 to 5 wt%. In this range, the antibacterial performance improvement effect is excellent. On the other hand, if the content of silver ions and zinc ions is less than 0.1% by weight, the effect of improving antibacterial performance is minimal, and even if it exceeds 10% by weight, there is no further improvement in antibacterial performance, which is not desirable.

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

The filler according to an example of the present invention refers to an extender filler added in large quantities for the purpose of reducing costs in addition to PVC, which is the main raw material, or a reinforcing filler added to improve mechanical properties or processability, and is used in the art. Any commonly used material may be used without particular limitation. Specific examples include 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, more preferably 20 to 50 parts by weight, based on 100 parts by weight of PVC. Within this range, processability is good, and the physical properties of the antibacterial plastic plate being manufactured may not deteriorate.

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

The content 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 can be added in an amount of 1 to 20 parts by weight based on 100 parts by weight of PVC.

In addition, the antibacterial plastic plate may be mixed with various additives depending on the purpose. As a specific example, the antibacterial plastic plate further includes one or two or more selected from the group consisting of stabilizers, processing aids, and suppressants. can do.

The stabilizer is intended to improve processability when processing antibacterial plastic plates, and can be used without particular limitation as long as it is commonly used in the industry. Preferably, it may 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, more preferably 2 to 8 parts by weight, based on 100 parts by weight of PVC.

The processing aid is also intended to improve processability when processing antibacterial plastic plates, and can be used without particular limitation as long as it is commonly used in the industry, and is used in an amount of 0.1 to 8 parts by weight, more preferably 1 to 5 parts by weight, per 100 parts by weight of PVC. It can be added in parts by weight.

The suppressant is a substance that suppresses smoke generation during combustion, and can be used without particular limitation as long as it is commonly used in the industry. For example, it may be zinc borate. The suppressant 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. Within this range, smoke generation during combustion can be effectively suppressed.

The thickness of the antibacterial plastic plate is not particularly limited as long as it is at a level commonly used in the industry. For example, it may be 0.5 to 2 mm, but of course, the thickness and size can be adjusted depending on the installation location and needs.

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 wood core surface-modified with the silane-based coupling agent and the antibacterial plastic plate, and has excellent adhesion between the wood core surface-modified with the silane-based coupling agent and the antibacterial plastic plate. There is no particular limitation on the type as long as it can have, but preferably an acrylic water-based adhesive can be used. When an acrylic water-based adhesive is used to bond a wood core surface-modified with the silane-based coupling agent to an antibacterial plastic plate, the two substrates are firmly adhered to each other and may not easily separate.

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

In addition, another aspect of the present invention relates to a method of manufacturing the above-described cubicle panel, in detail a) polyvinyl chloride (PVC), metal hydroxide-based particles, carbon black, surface-modified zinc oxide nanoparticles, and silver -Producing an antibacterial plastic plate by extruding a blended composition containing zinc zeolite, filler, and pigment; b) applying a silane-based coupling agent to the wood core and drying it to modify the surface; and c) applying an adhesive to the surface-modified wood core and adhering the antibacterial plastic plate. At this time, since the specific types and mixing amounts of each component are the same as described above, redundant description will be omitted.

In step a), when the composition for an antibacterial plastic plate is prepared with the composition and content, the final antibacterial plastic plate product can be obtained through extrusion molding of the composition and post-processing such as cutting. Extrusion molding and post-processing are conventional. It can be performed according to this method.

In step b) above, when applying the silane-based coupling agent on the wood core, the liquid silane-based coupling agent is applied as is, or the silane-based coupling agent and solvent are mixed to adjust the appropriate viscosity, and then this coating solution is applied. Application methods, etc. can be used. At this time, the application method may vary depending on the viscosity, and spray application or application using a brush or roller, etc. may be used.

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

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

Additionally, 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 the present invention pertains. The terminology used in the description herein is merely to effectively describe particular embodiments and is not intended to limit the invention. Additionally, the unit of additives not specifically described in the specification may be weight percent.

[Production Example 1]

Based on 100 parts by weight of polyvinyl chloride (PVC) resin (Hanwha Chemical Company, product name P-700), 8 parts by weight of magnesium hydroxide, 2 parts by weight of carbon black, surface-modified zinc oxide nanoparticles of Preparation Example 1, and surface-modified zinc oxide nanoparticles. 10 parts by weight of silver-zinc zeolite (weight ratio of surface-modified zinc oxide nanoparticles: 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 a processing aid (LG Chem, product name: PA950), 3 parts by weight of a flame retardant (LG Chem, product name: PA950), and 5 parts by weight of a suppressant (K-TOP) is extruded using a conventional method. Antibacterial PVC plate samples were prepared by processing.

At this time, the surface-modified zinc oxide nanoparticles and the surface-modified silver-zinc zeolite are an antibacterial particle mixture containing 80% by weight of zinc oxide nanoparticles and 20% by weight of silver-zinc zeolite (Sinanen Zeomic, product name Zeomic Mixture) 20 g of oligomeric thiol group-containing silane-based compound (Shin-Etsu Chemical Co., Ltd., product name It was prepared by drying with hot air for a while.

[Characteristic evaluation method]

1) Plasticizer detection test: Measured according to KS M 1991:2016 (GC/MS), di(ethylhexyl)phthalate (DEHP), di-n-octyl phthalate (DNOP), di-n-butyl phthalate (DBP) ), butylbenzyl phthalate (BBP), diisononyl phthalate (DINP), diethyl phthalate (DEP), and diisobutyl phthalate (DIBP) were tested for detection.

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

3) Flame retardancy test: Measured according to KOFEIS 1001.

4) Pollutant emission test: Samples were taken according to the guidelines for pollutant emission testing for construction materials, and the emissions of total volatile organic compounds (TVOC), toluene, and formaldehyde (mg/(㎡h)) were measured.

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

In detail, the following strains 1 to 5 were ^inoculated at a rate of 1.4 The number and log of antibacterial activity were measured. At this time, the antibacterial activity value was calculated as log(B/A), where 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) sample after 24 hours.

The results are shown in Table 2 and Figures 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 (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
test Afterflame time Within 5 seconds 0 remaining time Within 20 seconds 0 Carbonization area Within 40㎠ 22.7 Carbonization length Within 20 cm 6.0 pollution
mass release
test 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, the PVC plate of the present invention has excellent flame retardant performance and does not emit plasticizers or volatile organic compounds (VOC), making it very environmentally friendly.

blank panel sample strain 1 Initial bacterial count (CFU/㎠) 1.4 × 10 ⁴ Bacterial count after 24 hours (CFU/㎠) 2.5 × 10 ⁴ < 0.63 Antibacterial activity value - 4.5 strain 2 Initial bacterial count (CFU/㎠) 1.4 × 10 ⁴ Bacterial count after 24 hours (CFU/㎠) 1.1 × 10 ⁶ < 0.63 Antibacterial activity value - 6.2 strain 3 Initial bacterial count (CFU/㎠) 1.4 × 10 ⁴ Bacterial count after 24 hours (CFU/㎠) 2.6 × 10 ⁵ < 0.63 Antibacterial activity value - 5.6 strain 4 Initial bacterial count (CFU/㎠) 1.4 × 10 ⁴ Bacterial count after 24 hours (CFU/㎠) 6.9 × 10 ⁴ < 0.63 Antibacterial activity value - 5.0 strain 5 Initial bacterial count (CFU/㎠) 1.4 × 10 ⁴ Bacterial count after 24 hours (CFU/㎠) 2.6 × 10 ⁵ < 0.63 Antibacterial activity value - 5.6

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

[Production Examples 2 to 5]

All processes were carried out 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 Manufacturing Example 1]

An antibacterial particle mixture (Sinanen Zeomic, product name Zeomic type Mixture) was used as is.

[Comparative Manufacturing 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 manufacturing example
One Comparative manufacturing example
2 Comparative manufacturing example
3 PVC 100 (Left East) (Left East) (Left East) (Left East) (Left East) (Left East) (Left East) 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 East) (Left East) (Left East) (Left East) (Left East) (Left East) (Left East) TiO ₂ 15 (Left East) (Left East) (Left East) (Left East) (Left East) (Left East) (Left East) stabilizator 5 (Left East) (Left East) (Left East) (Left East) (Left East) (Left East) (Left East) Processing aid 3 (Left East) (Left East) (Left East) (Left East) (Left East) (Left East) (Left East) retardant 5 (Left East) (Left East) (Left East) (Left East) (Left East) (Left East) (Left East)

Table 4 below 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 manufacturing example
One Comparative manufacturing example
2 Comparative manufacturing example
3 Extrusion molding processability Great Great Great middle error error Great Great flame retardant Afterflame time 0 3.6 0 0 test
Impossible test
Impossible 0 0 remaining time 0 14 4 0 3 2 Carbonization 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 test
Impossible test
Impossible (Increased number of bacteria) 4.2 Strain 2 6.2 2.5 5.4 6.4 (Increased 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, flame retardancy and antibacterial properties were excellent, especially when 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, in which 1 to 3 parts by weight of surface-modified silver-zinc zeolite was added, showed 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 somewhat reduced.

On the other hand, in Preparation Example 2, in which each ingredient was added in an amount below the above content range, both flame retardancy and antibacterial properties were not as good as in Preparation Example 1, and in Preparation Example 5 in which each ingredient was added in an amount exceeding the above content range, the processability was greatly reduced. Plastic surgery was not possible.

In addition, in the case of Comparative Preparation Example 1 in which zinc oxide and silver-zinc zeolite mixed powder without surface modification was added, processability was greatly reduced and molding was not possible.

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

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

[Examples 1 to 5]

3-Methacryloxypropyltrimethoxysilane (viscosity 2 cSt) was spray applied to one side of the particle board and then dried with hot air at a temperature of 70°C for 1 hour to prepare surface-modified particle board.

Next, adhesive was applied to one side of the surface-modified particle board (surface-modified side), and then the PVC plates prepared in Preparation Examples 1 to 5 were adhered. At this time, the adhesive includes 40% by weight of vinyl acetate-acrylic copolymer, 4.5% by weight of polyvinyl alcohol, 3% by weight of plasticizer such as diisononyl-cyclohexane (4)-1,2-dicarboxylate, and the remaining amount of water. An acrylic water-based adhesive was used.

[Comparative Example 1]

The procedure was the same as in Example 1 except that particle board without surface modification was used.

The peel adhesive strength (T peel strength, 23°C) of the cubicle panels 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. In this way, it was confirmed that by modifying the surface of the particle board with a silane-based coupling agent, the adhesion between the particle board, the acrylic water-based adhesive, and the antibacterial plastic plate was improved, thereby ensuring excellent peel adhesion strength.

Although the present invention has been described through specific details and limited examples as described above, these are provided only to facilitate a more general understanding of the present invention, and the present invention is not limited to the above-mentioned examples, and the present invention belongs to Those skilled in the art can make various modifications and variations from this description.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and the scope of the patent claims described below as well as all modifications that are equivalent or equivalent to the scope of this patent claim shall fall within the scope of the spirit of the present invention. .

Claims (8)

Wood core surface modified with a silane-based coupling agent;
An antibacterial plastic plate attached to the surface of the wood core surface-modified with the silane-based coupling agent; and
An adhesive for bonding a wood core surface-modified with the silane-based coupling agent to an antibacterial plastic plate;
A cubicle panel containing,
The antibacterial plastic plate is manufactured by extrusion molding a composition containing polyvinyl chloride (PVC), metal hydroxide particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, fillers, and pigments. And
The surface-modified zinc oxide nanoparticles are coated on the surface with a silane-based compound containing a thiol group,
The thiol group-containing silane-based compound is an oligomeric compound having two or more alkoxysilyl groups in the molecule, a cubicle panel with added antibacterial and flame retardant properties.
According to clause 1,
A cubicle panel with added antibacterial and flame retardant properties, wherein the silane-based coupling agent is a silane-based compound containing a double bond group.
According to clause 2,
The double bond-containing silane-based compounds include vinyltrimethoxysilane, vinyltriethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-acryloxypropyltriethoxysilane, 3-acryloxypropylmethyldimethoxysilane, 3-Acryloxypropylmethyldiethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-methacryloxypropylmethyldimethoxysilane and 3-methacryloxypropylmethyl. A cubicle panel with added antibacterial and flame retardant properties, which is one or two or more selected from the group consisting of diethoxysilane.
According to clause 1,
A cubicle panel with antibacterial and flame retardant properties, wherein the metal hydroxide particles are aluminum hydroxide, magnesium hydroxide, or a mixture thereof.
delete delete According to clause 1,
The wooden core is particleboard (PB) or core plywood, a cubicle panel with added antibacterial and flame retardant properties.
a) manufacturing an antibacterial plastic plate by extruding a blended composition containing polyvinyl chloride (PVC), metal hydroxide particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, fillers, and pigments;
b) applying a silane-based coupling agent to the wood core and drying it to modify the surface; and
c) applying an adhesive to the surface-modified wood core and adhering the antibacterial plastic plate;
The surface-modified zinc oxide nanoparticles are coated on the surface with a silane-based compound containing a thiol group,
A method of manufacturing a cubicle panel with added antibacterial and flame retardant properties, wherein the thiol group-containing silane-based compound is an oligomeric compound having two or more alkoxysilyl groups in the molecule.