KR102187998B1 - Natural flooring material with excellent sound absorption, sound insulation and antibacterial properties, and its manufacturing method - Google Patents

Abstract

The present invention relates to an eco-friendly floor material and a manufacturing method thereof, wherein the eco-friendly floor material includes: a floor fiber layer; a cork layer formed on the floor fiber layer; a woody board layer formed on the cork layer; and a surface material layer formed on the woody board layer, wherein the surface material layer contains wood powder surface-modified with polyhedral oligomer silsesquioxane, limestone, pigment, polylysine, volcanic ash, rosin, and linseed oil. Therefore, the eco-friendly floor material has no environmental pollution even in case of disuse, thereby being eco-friendly.

Description

Eco-friendly flooring material with excellent sound absorption, sound insulation and antibacterial properties, and its manufacturing method}

The present invention relates to an eco-friendly floor covering excellent in sound absorbing and insulating properties and antibacterial properties while preventing exposure of harmful substances to the human body by using eco-friendly materials, and a manufacturing method thereof.

In general, floor flooring materials are surface treated with resin, including forming an adhesive layer on a plywood structure, coating a veneer printed with a wooden pattern on vinyl or paper, or painting a transparent resin or colored resin on the plywood structure. Use it. Such a flooring material is a structure in which veneer is bonded on a water-resistant plywood, and is too hard to have low impact resistance or strength.

Other flooring materials include bonding a synthetic resin plate with excellent surface properties such as insulation resistance, flame retardancy, strength and moisture resistance by using an adhesive on the floor surface, but the surface may be uneven due to foreign substances on the floor surface. There is a risk of being easily exposed to substances harmful to the human body due to occurrence. In addition, there is a problem in that the manufacturing cost is high due to a complex processing process or the adhesion time is long, resulting in a decrease in productivity.

Republic of Korea Patent Publication No. 10-0818291 discloses a floor material in which the upper and lower plates are metal plates, and a honeycomb core is installed between the upper and lower plates to reduce impact and noise, while reducing weight, but the structure is complex and complex assembly during construction. The work takes a lot of construction time, so there is a problem in that the productivity decreases and the manufacturing cost increases, resulting in poor economic efficiency.

In order to solve the above problems, the present applicant has proposed a natural flooring material that is easy to install from the floor, has excellent durability, and does not generate harmful substances during construction through Korean Patent Publication No. 10-1302198. , There is a need to develop an eco-friendly flooring material that has superior antibacterial antibacterial performance and mold resistance, and has superior strength and shock absorption.

Korean Registered Patent Publication No. 10-0818291 (2008.03.25.) Republic of Korea Patent Publication No. 10-1302198 (2013.08.26.)

In order to solve the above problems, the present invention is an eco-friendly flooring material having excellent durability, strength, and shock absorption while being easy to install from the floor and having no harmful substances during construction. It aims to provide.

One aspect of the present invention for achieving the above object is a floor fiber layer; A cork layer formed on the bottom fiber layer; A wood board layer formed on the cork layer; And a surface material layer formed on the wooden board layer, wherein the surface material layer comprises wood powder, limestone, pigment, polylysine, volcanic ash, rosin and linseed oil, surface-modified with polyhedral oligomer silsesquioxane. It relates to eco-friendly flooring materials.

In the above aspect, the floor fiber layer may include any one or two or more selected from the group consisting of hemp, ramie, hemp, and cotton.

In the above aspect, the woody board layer is any one selected from the group consisting of medium-density fiberboard (MDF), high-density fiberboard (HDF), solid wood, veneer, plywood (Plywood), and particle board (PB), or It may include more than one.

In the above aspect, the volcanic ash may include a first volcanic ash having an average diameter of 0.05 to 0.5 mm and a second volcanic ash having an average diameter of 1 to 4 mm.

In addition, another aspect of the present invention comprises the steps of: a) preparing a surface material layer with a composition for a surface material including wood powder, limestone, pigment, polylysine, volcanic ash, rosin and linseed oil, which is surface-modified with polyhedral oligomer silsesquioxane; b) applying a first natural adhesive to one surface of the surface material layer and then bonding it to one surface of the wood panel material layer; c) applying a second natural adhesive to the other surface of the wood plank layer and then bonding it to one surface of the cork layer; And d) laminating a floor fiber layer on the other surface of the cork layer.

In the other aspect, the surface-modified wood flour with polyhedral oligomer silsesquioxane may be surface-modified by adding wood flour to a polyhedral oligomer silsesquioxane solution and stirring at 20 to 100°C for 1 to 60 hours. .

In the other aspect, step a) may be to mold the composition for a surface material into a board shape and then aging for 0.5 to 48 hours at 20 to 100°C in a humid atmosphere.

In another aspect, the first natural adhesive and the second natural adhesive may include rosin and linseed oil.

Since the flooring material according to the present invention is mostly composed of natural materials, it is not harmful even when it comes into contact with the human body, and it is environmentally friendly because there is no environmental pollution even when discarded.

In addition, by using the surface-modified wood powder, compatibility with other constituents is improved compared to the unmodified wood powder, so that a more evenly distributed surface material layer can be secured. In particular, the polyhedral oligomer silsesquioxane By using the modified wood powder, the surface strength of the floor flooring material is greatly improved, and excellent impact resistance and scratch resistance can be secured.

In addition, by adding volcanic ash together with limestone, flame retardancy may be further increased, and sound absorbing and insulating performance may be further improved by volcanic ash, which is a porous material.

In addition, by using polylysine together with rosin and linseed oil, which are natural antibacterial adhesives, antibacterial, antibacterial and antifungal properties can be secured, so molds may not easily propagate on the floor material even in a high temperature and high humidity environment in summer. .

1 is a cross-sectional view of an eco-friendly flooring material according to an embodiment of the present invention.

Hereinafter, an eco-friendly floor covering excellent in sound absorbing and insulating properties and antibacterial properties according to the present invention and a method of manufacturing the same 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, unless there are other definitions in the technical terms and scientific terms used, they have the meanings 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.

The applicant of the present invention has proposed a natural flooring material that is easy to install from the floor, has excellent durability, and does not generate harmful substances during construction, but has better antibacterial and antibacterial performance through Korean Patent Registration No. 10-1302198. And it has mold resistance, it is necessary to develop an eco-friendly flooring material having more excellent strength and shock absorption.

Accordingly, after repeated research, the applicant of the present invention modified the surface of the wood powder of the surface material layer with polyhedral oligomer silsesquioxane, and further added volcanic ash as an antibacterial antibacterial and fungal resistant component polylysine and a sound absorbing and insulating component. It has performance and mold resistance, and has come to develop an eco-friendly flooring material with superior strength and shock absorption.

Specifically, one aspect of the present invention is a floor fiber layer; A cork layer formed on the bottom fiber layer; A wood board layer formed on the cork layer; And a surface material layer formed on the wooden board layer, wherein the surface material layer comprises wood powder, limestone, pigment, polylysine, volcanic ash, rosin and linseed oil, surface-modified with polyhedral oligomer silsesquioxane. It relates to eco-friendly flooring materials.

As described above, since most of the flooring material according to the present invention is composed of natural materials, it is not harmful even if it touches the human body, and there is no environmental pollution even when discarded, so that it is environmentally friendly.

In addition, by using the surface-modified wood powder, compatibility with other constituents is improved compared to the unmodified wood powder, so that a more evenly distributed surface material layer can be secured. In particular, the polyhedral oligomer silsesquioxane By using the modified wood powder, the surface strength of the floor flooring material is greatly improved, and excellent impact resistance and scratch resistance can be secured.

In addition, by adding volcanic ash together with limestone, flame retardancy may be further increased, and sound absorbing and insulating performance may be further improved by volcanic ash, which is a porous material.

In addition, by using polylysine together with rosin and linseed oil, which are natural antibacterial adhesives, antibacterial, antibacterial and antifungal properties can be secured, so molds may not easily propagate on the floor material even in a high temperature and high humidity environment in summer. .

In detail, the floor flooring material according to the present invention may have an impact resistance of 60 cm or more, and more preferably 65 to 80 cm, as measured by vertical free fall of a metal ball having a diameter of 3 cm and a weight of 280 g. In addition, the level of noise measured according to the ISO 140 standard may be 4 dB or less at 400 Hz, 12 dB or less at 800 Hz, and 35 dB or less at 2000 Hz, and more preferably 2.0 to 3.6 dB at 400 Hz, and 800 Hz at 800 Hz. It may be 8 to 11 dB, and 20 to 30 dB at 2000 Hz.

On the other hand, Figure 1 is a cross-sectional view of the eco-friendly floor flooring according to an embodiment of the present invention, the eco-friendly floor flooring from below, the floor fiber layer (1), the cork layer (2), the wood plank layer (3) and the surface material layer (4) ) Has a sequentially stacked structure, and each layer may be bonded by a natural adhesive. At this time, the natural adhesive may be a mixture of rosin and linseed oil, preferably rosin: linseed oil weight ratio of 6:4 to 9:1, more preferably rosin: linseed oil weight ratio of 7:3 to 8.5:1.5 It is good that the work is easy when applying the adhesive while securing excellent adhesion.

Hereinafter, each layer of the eco-friendly flooring material according to an embodiment of the present invention will be described in more detail.

The floor fiber layer according to an embodiment of the present invention may be made of a natural fabric, and by using a natural fabric, it is environmentally friendly, imparts water resistance and water resistance, and at the same time, it is possible to improve the impact characteristics of the floor material through a combination with a cork layer. have. As a specific example, the floor fiber layer may include any one or two or more selected from the group consisting of hemp, ramie, hemp, and cotton, preferably hemp fibers, particularly preferably jute fibers. have.

The natural fabric constituting the floor fiber layer may be formed by twisting three bundles of fibers having a diameter of 0.01 to 0.1 mm into a single thread, and then combining these threads into strands and woven into a fabric form.

The cork layer according to an embodiment of the present invention is made into a board shape by press-molding cork powder made by grinding the bark of oak cork, and has excellent sound absorption and impact properties by itself, and is suitable for combination with a floor fiber layer and a surface material layer. Thus, further superior sound absorbing and insulating properties and impact properties can be provided. In order to achieve such an effect, the cork layer may have an apparent density of 100 to 200 kg/m 3, more preferably 110 to 150 kg/m 3, but is not limited thereto.

The wood plank layer according to an embodiment of the present invention is for securing the dimensional stability of the floor flooring material, and can be used without particular limitation as long as it is commonly used in the art, and as a specific example, the wood plank layer is a medium-density fiberboard (MDF), high-density fiberboard (HDF), solid wood, veneer, plywood (Plywood), and may include any one or two or more selected from the group consisting of a particle board (PB). Preferably, it is possible to use a high-density fiberboard (HDF) impregnated with a urethane-based resin containing methylene diphenyl diisocyanate (MDI), which can greatly improve water resistance and waterproofness.

The surface material layer according to an embodiment of the present invention is to further shape the antibacterial, antibacterial and anti-fungal performance of the eco-friendly flooring material and at the same time improve impact resistance.As described above, the surface is modified with polyhedral oligomer silsesquioxane. It may include wood flour, limestone, pigment, polylysine, volcanic ash, rosin and linseed oil.

The surface-modified wood flour with the polyhedral oligomer silsesquioxane is obtained by modifying the surface of wood flour commonly used in the art with a polyhedral oligomer silsesquioxane (hereinafter referred to as POSS, polyhedral oligomeric silsesquioxane). By using, the compatibility with other constituents is improved so that each component can be more evenly mixed. In particular, the surface strength of the floor flooring material is greatly improved by using wood powder that has been surface-modified with POSS, resulting in excellent impact resistance and scratch resistance. Castle can be secured.

In an example of the present invention, the POSS refers to a polysilsesquioxane having a cage structure, and may be represented by (RSiO _1.5 ) _n , and R may be hydrogen or a general hydrocarbon group, n can be 6, 8, 10, 12, 14 or 16. More specifically, R is an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 3 to 20 carbon atoms, a cycloalkyl group having 6 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms, and 4 to 30 carbon atoms. It may be a heteroaryl group of or a combination thereof, but is not limited thereto.

In addition, the POSS may have a functional group substituted, and the functional group may be an alcohol group, an amino group, a carboxyl group, or an epoxy group.

As a specific example, the alcohol group-substituted POSS includes cyclohexanediol isobutyl POSS (Cyclohexanediol isobutyl POSS), 1,2-propanediol isobutyl POSS (1,2-Propanediol isobutyl POSS), and octa (3-hydroxy-3). -Methylbutyldimethylsiloxy) POSS ((Octa(3-hydroxy-3-methylbutyldimethylsiloxy) POSS), etc.; POSS substituted with amine groups are aminopropyl isobutyl POSS (Aminopropyl isobutyl POSS), aminopropyl isobutyl POSS (Aminopropyl isooctyl POSS), aminoethylaminopropyl isobutyl POSS (Aminoethylaminopropyl isobutyl POSS), N-phenylaminopropyl POSS (N-Phenylaminopropyl POSS), N-methylaminopropyl isobutyl POSS (N-Methylaminopropyl isobutyl POSS), octa ammonium POSS ( Octa ammonium POSS), aminophenyl cyclohexyl POSS (Aminophenyl cyclohexyl POSS), aminophenyl isobutyl POSS (Aminophenyl isobutyl POSS), etc.; POSS substituted with an epoxy group is epoxy cyclohexyl isobutyl POSS (Epoxy cyclohexyl isobutyl POSS), epoxy Cyclohexyl POSS (Epoxycyclohexyl POSS), glycidyl POSS (Glycidyl POSS), glycidyl ethyl POSS (Glycidyl ethyl POSS), glycidyl isobutyl POSS (Glycidyl esobutyl POSS), and the like, and any one selected from these Two or more can be mixed and used.

In the wood powder surface-modified with the POSS, the POSS may be used in an amount of 3 to 10 parts by weight based on 100 parts by weight of wood powder, and more preferably in an amount of 4 to 6 parts by weight. In the above range, the strength of the surface material layer can be effectively increased while improving the compatibility with each component. On the other hand, when POSS is added in less than 3 parts by weight, the surface modification effect may be insignificant and the surface strength may not increase. Conversely, when POSS is added in more than 10 parts by weight, the strength is improved but the brittle property is increased. As a result, the impact resistance may decrease.

The limestone is for imparting flame retardancy to the flooring material, and if it is commonly used in the art, it may be used without particular limitation, and 0.5 to 10 parts by weight may be added based on 100 parts by weight of wood flour surface-modified with POSS. , More preferably, it may be added in 2 to 5 parts by weight. In such a range, flame retardancy can be effectively exhibited.

The pigment is for expressing a target color and texture, and if it is commonly used in the art, it may be used without particular limitation, and 0.5 to 5 parts by weight may be added based on 100 parts by weight of the wood flour surface-modified with POSS. And, more preferably, it may be added in 1 to 3 parts by weight. In this range, a target color and texture can be effectively expressed, but the present invention is not limited thereto.

The polylysine is intended to further improve the antibacterial properties of eco-friendly flooring materials, and by using polylysine together with natural antibacterial adhesives such as rosin and linseed oil, antibacterial, antibacterial and antifungal performance can be further improved. Even in one environment, mold may not grow easily on the flooring. As a specific example, the polylysine is any one or two selected from the group consisting of ε-poly-L-lysine or ε-poly-D-lysine, α-poly-L-lysine and α-poly-D-lysine It can be more than that. In this case, the polylysine may be added in an amount of 0.1 to 3 parts by weight, more preferably 0.5 to 2 parts by weight, based on 100 parts by weight of the wood flour surface-modified with the POSS. In this range, antibacterial, antibacterial and antifungal performance can be effectively improved.

The volcanic ash is a natural porous particle, and flame retardancy may be further increased by adding volcanic ash together with limestone, and sound absorbing and insulating performance may be further improved by volcanic ash, which is a porous material. In addition, the volcanic ash is better because it can prevent the dimensions of the floor flooring material having excellent moisture absorption and moisture-proof effects from being changed by moisture. In this case, the volcanic ash may be added in an amount of 1 to 30 parts by weight, more preferably 5 to 20 parts by weight, based on 100 parts by weight of the wood flour surface-modified with the POSS. In this range, the sound absorbing and insulating performance can be particularly effectively improved.

More preferably, the volcanic ash may include a first volcanic ash having an average diameter of 0.05 to 0.5 mm and a second volcanic ash having an average diameter of 1 to 4 mm, and more preferably, a first volcanic ash having an average diameter of 0.1 to 0.3 mm and 2.5 It may include a second volcanic ash of about 3.5 mm, and the sound absorbing and insulating performance may be further improved by using a mixture of two types of volcanic ash having different sizes. At this time, the weight ratio of the first volcanic ash: the second volcanic ash may be 2:8 to 8:2, more preferably 4:6 to 6:4. In this range, the sound absorbing and insulating performance and impact resistance improvement effect are excellent.

The rosin and linseed oil are for firmly bonding each component constituting the surface material, and rosin is a sap collected from pine trees and can give durability, water resistance and adhesion to the surface material layer, and linseed oil is from the seeds of flax plants. As extracted and mixed with rosin, the adhesion is further increased, so that more excellent impact resistance can be secured.

As a preferred example, the weight ratio of the rosin: linseed oil may be 6:4 to 9:1, and more preferably 7:3 to 8.5:1.5. In such a range, it is good that it is easy to work during mixing and molding with other components of the surface material while providing particularly excellent adhesion.

On the other hand, another aspect of the present invention relates to the manufacturing method of the eco-friendly floor flooring material described above, specifically, the manufacturing method includes a) wood powder, limestone, pigment, polylysine, volcanic ash, surface-modified with polyhedral oligomer silsesquioxane, Preparing a surface material layer with a composition for a surface material comprising rosin and linseed oil; b) applying a first natural adhesive to one surface of the surface material layer and then bonding it to one surface of the wood panel material layer; c) applying a second natural adhesive to the other surface of the wood plank layer and then bonding it to one surface of the cork layer; And d) laminating a bottom fiber layer on the other surface of the cork layer.

First, a) a step of preparing a surface material layer with a composition for a surface material including wood powder, limestone, pigment, polylysine, volcanic ash, rosin and linseed oil, surface-modified with polyhedral oligomer silsesquioxane.

The surface-modified wood flour with the polyhedral oligomer silsesquioxane (POSS) may be surface-modified by adding wood flour to the polyhedral oligomer silsesquioxane solution (POSS solution) and stirring at 20 to 100°C for 1 to 60 hours. , More preferably, it may be surface-modified by stirring at 40 to 80° C. for 6 to 24 hours. Wood flour can be effectively surface-modified under such conditions. In this case, since the wood powder and the POSS material are the same as described above, a redundant description will be omitted.

Meanwhile, the POSS solution is obtained by dissolving POSS in an organic solvent, and the available organic solvent is an aliphatic hydrocarbon solvent such as hexane; Aromatic hydrocarbon solvents such as anisole, mesitylene, and xylene; Ketone solvents such as methyl isobutyl ketone, 1-methyl-2-pyrrolidinone, and acetone; Ether solvents such as cyclohexanone, tetrahydrofuran, and isopropyl ether; Acetate-based solvents such as ethyl acetate, butyl acetate, and propylene glycol methyl ether acetate; Alcohol solvents such as isopropyl alcohol and butyl alcohol; And it may be any one or two or more mixed solvents selected from the group consisting of amide solvents such as dimethylacetamide and dimethylformamide.

As described above, POSS may be used in an amount of 3 to 10 parts by weight based on 100 parts by weight of wood flour, and more preferably in an amount of 4 to 6 parts by weight. In the above range, the strength of the surface material layer can be effectively increased while improving the compatibility with each component. On the other hand, when POSS is added in less than 3 parts by weight, the surface modification effect may be insignificant and the surface strength may not increase. Conversely, when POSS is added in more than 10 parts by weight, the strength is improved but the brittle property is increased. As a result, the impact resistance may decrease. At this time, the concentration of the POSS solution may be 3 to 10% by weight, more preferably 4 to 7% by weight. In this range, wood flour can be well surface-modified as a whole.

Thereafter, of course, a drying step for removing the organic solvent may be additionally performed.

As described above, when the surface-modified wood powder with POSS is prepared, a) a surface material layer with a composition for surface materials including wood powder, limestone, pigment, polylysine, volcanic ash, rosin and linseed oil, surface-modified with polyhedral oligomer silsesquioxane. The steps of manufacturing can be performed.

Specifically, the step a) may be to be aged for 0.5 to 48 hours in a 20 to 100 ℃, humid atmosphere after molding the composition for the surface material into a board shape, more preferably 20 to 50 ℃, 12 to under a humid atmosphere It may be aged for 36 hours. In this range, each component is well bonded to have excellent impact resistance and dimensional stability.

The molding in the form of a board may be performed by a method commonly used in the art. For example, a composition for a surface material is put into a molding mold and at a temperature of 20 to 100°C and a pressure of 10 to 300 kg/m 2 It can be molded by heating and pressing, and more preferably, it is preferable to form a surface material layer having high impact absorption and sound absorbing and insulating properties by heating and pressing at a temperature of 40 to 80°C and a pressure of 30 to 100 kg/m2.

Next, b) applying a first natural adhesive to one surface of the surface material layer and then bonding it to one surface of the woody board material layer; c) applying a second natural adhesive to the other surface of the wood plank layer and then bonding it to one surface of the cork layer; And d) laminating a bottom fiber layer on the other surface of the cork layer; may be performed sequentially. In this case, the first natural adhesive and the second natural adhesive may be the same as the above-described natural leaf adhesive, and specifically, the first natural adhesive and the second natural adhesive may include rosin and linseed oil, preferably rosin: Linseed oil having a weight ratio of 6:4 to 9:1, more preferably a resin with a weight ratio of rosin: linseed oil of 7:3 to 8.5:1.5, is good for securing excellent adhesion and facilitating work when applying an adhesive.

Thereafter, the floor fiber layer, the cork layer, the wood board layer, and the surface material layer are sequentially laminated to each other by pressing the floor flooring material so that each layer is more firmly bonded, and the pressure treatment may be performed by a cold press process. . In the conventional case, a hot press was required to secure excellent adhesion, but the flooring material according to the present invention adds the wood powder surface-modified with POSS to the surface layer, so that the surface material layer can be firmly bonded to the wood panel material layer without heating. I can. In this case, the cold-pressing process may be performed under a room temperature of 15 to 35°C and a pressure of 100 to 150 kg/cm 2.

The eco-friendly flooring material manufactured in this way can be used instead of the general flooring material, and it is not harmful to the human body and is environmentally friendly, so it can be applied to day care centers and hospitals that require eco-friendly materials.

Hereinafter, an eco-friendly floor covering excellent in sound absorbing and insulating properties and antibacterial properties according to the present invention and a method of manufacturing the same will be described in more detail through examples. However, the following examples are only one reference for describing the present invention in detail, and the present invention is not limited thereto, and may be implemented in various forms.

Further, 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 belongs. The terms used in the description herein are merely to effectively describe specific embodiments and are not intended to limit the invention. In addition, the unit of the additive not specifically described in the specification may be a weight %.

Preparation of surface-modified wood flour with polyhedral oligomer silsesquioxane (POSS)

[Production Example 1]

After dissolving 10 g of aminopropylisobutyl-POSS (Hybrid Plastic) in 950 g of tetrahydrofuran (THF) to prepare a surface modification solution having a concentration of 1% by weight, 1000 g of wood flour was added to the surface modification solution and 50°C The mixture was stirred for 12 hours. Then, the wood powder was filtered and dried with hot air at 60° C. for 2 hours to prepare wood powder surface-modified with POSS.

[Production Example 2]

30 g of aminopropyl isobutyl-POSS (Hybrid Plastic) was dissolved in 950 g of tetrahydrofuran (THF) to prepare a surface modification solution having a concentration of 3.1% by weight, and then 1000 g of wood flour was added to the surface modification solution and 50°C The mixture was stirred for 12 hours. Then, the wood powder was filtered and dried with hot air at 60° C. for 2 hours to prepare wood powder surface-modified with POSS.

[Production Example 3]

After dissolving 50 g of aminopropylisobutyl-POSS (Hybrid Plastic) in 950 g of tetrahydrofuran (THF) to prepare a surface modification solution having a concentration of 5% by weight, 1000 g of wood flour was added to the surface modification solution, and 50°C Stirred at for 12 hours to prepare wood flour surface-modified with POSS.

[Production Example 4]

100 g of aminopropyl isobutyl-POSS (Hybrid Plastic) was dissolved in 950 g of tetrahydrofuran (THF) to prepare a surface modification solution having a concentration of 9.5% by weight, and then 1000 g of wood flour was added to the surface modification solution and 50°C Stirred at for 12 hours to prepare wood flour surface-modified with POSS.

[Production Example 5]

After dissolving 165 g of aminopropyl isobutyl-POSS (Hybrid Plastic) in 950 g of tetrahydrofuran (THF) to prepare a surface modification solution having a concentration of 14.8% by weight, 1000 g of wood flour was added to the surface modification solution, and 50°C Stirred at for 12 hours to prepare wood flour surface-modified with POSS.

[Comparative Preparation Example 1]

Wood flour was prepared without surface modification.

Wood powder surface modified with POSS Surface modifier Wood flour (g) POSS (g) THF (g) Concentration (% by weight) Manufacturing Example 1 10 950 One 1000 Manufacturing Example 2 30 3.1 Manufacturing Example 3 50 5 Manufacturing Example 4 100 9.5 Manufacturing Example 5 165 14.8 Comparative Production Example 1 - - - 1000

[Example 1]

With respect to 100 parts by weight of the wood powder surface-modified with the POSS of Preparation Example 3, 0.5 parts by weight of limestone, 0.5 parts by weight of pigment, 0.1 parts by weight of polylysine, 1 part by weight of volcanic ash (average diameter 0.2 mm 0.6 parts by weight + average diameter 3 mm 0.4 parts by weight), 8 parts by weight of rosin and 2 parts by weight of linseed oil are mixed to prepare a surface material composition, and then put it in a molding mold and heated and pressurized for 1 minute at 60°C temperature and 50 kg/㎡ pressure condition to form a board. Molded. Thereafter, the surface material layer was prepared by aging for 24 hours at room temperature (about 25° C.) in a humid atmosphere.

2) Manufacturing of flooring materials:

A high-density fiberboard (HDF) was adhered to one side of the surface material layer after applying a natural adhesive (resin: amine oil in a weight ratio of 8:2). Thereafter, a cork board and hemp fibers were sequentially bonded using the natural adhesive to prepare a floor covering.

[Examples 2 to 5 and Comparative Examples 1 to 7]

All processes were performed in the same manner as in Example 1 except that the content of each component added to the composition for surface material was changed as described in Table 1 below.

[Examples 6 to 9, and Comparative Example 8]

All processes were performed in the same manner as in Example 1 except that the types of wood powder surface-modified with POSS added to the composition for surface material were different as described in Table 1 below.

[Comparative Example 9]

Flooring was manufactured in the same manner as described in Korean Patent Publication No. 10-1302198.

Surface material layer (parts by weight) POSS modified wood flour Limestone Pigment Polylysine Ash Rosin Linseed oil Example 1 Manufacturing Example 3 100 0.5 0.5 0.1 One 8 2 Example 2 2 One 0.5 5 12 3 Example 3 3 2 1.5 10 20 5 Example 4 5 3 2 20 24 6 Example 5 10 5 3 30 28 7 Example 6 Manufacturing Example 1 100 3 2 1.5 6 20 5 Example 7 Manufacturing Example 2 Example 8 Manufacturing Example 4 Example 9 Manufacturing Example 5 Comparative Example 1 Manufacturing Example 3 100 - - - - 20 5 Comparative Example 2 0.1 0.1 0.01 0.1 4 One Comparative Example 3 15 10 10 50 40 10 Comparative Example 4 3 2 - 10 20 5 Comparative Example 5 3 2 1.5 - 20 5 Comparative Example 6 3 2 1.5 10 - 25 Comparative Example 7 3 2 1.5 10 25 - Comparative Example 8 Comparative Production Example 1 100 3 2 1.5 10 20 5 Comparative Example 9 Comparative Production Example 1 100 3 2 - - 16 4

[Physical property evaluation]

1) Antibacterial evaluation:

After preparing a specimen with a size of 5 cm in width and length, an antibacterial test was conducted according to JIS Z 2801:2006. Specifically, the strains used are Escherichia coli ATCC 8739 ( strain 1 ) and Staphylococcus aureus ATCC 6538P ( strain 2 ), and cultured for 24 hours under conditions of 35.0±1° C. and 90% relative humidity or higher. Experimented. At this time, a Stomacher film having a size of 5cm × 5cm was used as the control specimen.

2) Mold resistance evaluation:

After preparing a specimen with a size of 165 mm in width and length, an antibacterial test was conducted according to ASTM G 21. Specifically, the used strain was black fungus ( Aspergillus niger ) ATCC 9642 ( strain 3 ), and 0.5 ml of black fungus spore solution was inoculated into the specimen, and then cultured for 4 weeks under conditions of 29.0±1℃ and 90% relative humidity. Experimented. As a result, 0 if the growth of mold in the sample is not recognized, 1 if the growth of mold in the sample is less than 10%, 2 if the growth of mold in the sample is more than 10% and less than 30%, and 30 in the sample. % Or more and less than 60% were graded as 3, and if the sample had a mold growth of 60% or more, it was rated as 4, and the results are shown in Table 3 below.

Antibacterial (log value) Anti-fungal (grade) Strain 1 Strain 2 Strain 3 Incubation time 24 hours 24 hours 1 week 2 weeks 3 weeks 4 weeks Control 7.0 6.4 - - - - Example 1 <1 <1 0 0 0 0 Example 2 <1 <1 0 0 0 0 Example 3 <1 <1 0 0 0 0 Example 4 <1 <1 0 0 0 0 Example 5 <1 <1 0 0 0 0 Example 6 <1 <1 0 0 0 0 Example 7 <1 <1 0 0 0 0 Example 8 <1 <1 0 0 0 0 Example 9 <1 <1 0 0 0 0 Comparative Example 1 2.7 3.1 0 0 0 One Comparative Example 2 4.8 4.9 0 0 0 2 Comparative Example 3 <1 <1 0 0 0 0 Comparative Example 4 2.6 3.0 0 0 0 One Comparative Example 5 <1 <1 0 0 0 0 Comparative Example 6 <1 <1 0 0 0 0 Comparative Example 7 <1 <1 0 0 0 0 Comparative Example 8 <1 <1 0 0 0 0 Comparative Example 9 2.7 3.2 0 0 0 One

3) Sound absorbing and insulating performance evaluation:

The sound absorbing and insulating performance (ISO 140 standard, floor temperature: 21° C., floor material thickness: 9.8mm) with respect to the noise level (㎐) was evaluated, and the results are shown in Table 4 below.

4) Impact resistance (cm) evaluation:

A metal hole having a diameter of 3 cm and a weight of 280 g was vertically freely dropped on the surface of the floor covering to be measured in units of 5 cm, and then the height of the floor at which the surface of the floor was broken was measured, and the results are shown in Table 4 below.

Sound absorption and sound insulation performance (dB) Impact resistance
(Cm) 400 ㎐ 800 ㎐ 2000 ㎐ Example 1 4.0 11.8 32.1 50 Example 2 3.6 10.9 29.4 60 Example 3 3.1 10.3 25.6 70 Example 4 2.8 9.4 24.8 65 Example 5 2.7 9.1 24.2 50 Example 6 3.2 10.5 26.1 50 Example 7 3.1 10.4 25.5 60 Example 8 3.0 10.5 25.8 65 Example 9 3.3 10.8 26.2 45 Comparative Example 1 4.1 13.3 36.1 15 Comparative Example 2 4.2 13.2 35.7 20 Comparative Example 3 2.6 8.9 23.9 45 Comparative Example 4 3.1 10.4 25.8 65 Comparative Example 5 4.3 13.4 35.7 60 Comparative Example 6 3.3 10.4 25.6 35 Comparative Example 7 3.1 10.4 25.9 40 Comparative Example 8 3.3 10.5 26.1 50 Comparative Example 9 4.2 13.2 35.8 50

As shown in Tables 3 and 4, it was confirmed that the eco-friendly flooring material according to the present invention not only has excellent antibacterial anti-fungal performance, but also has excellent sound absorbing and insulating performance and mechanical strength.

In particular, in the case of Examples 2 to 4 in which each component was mixed in an appropriate amount and in Examples 7 and 8 in which the surface-modified wood powder of Preparation Examples 2 to 4 was mixed in an appropriate amount, the sound absorbing and insulating performance and mechanical strength were Excellent.

On the other hand, in the case of Comparative Example 1 using only the surface-modified wood powder and adhesive, the antibacterial and antibacterial performance was exhibited by rosin and linseed oil, but the performance was slightly inferior to the Example, and the comparison of adding a small amount of each component of the surface-modified wood powder In the case of Example 2, the antibacterial antibacterial performance was rather poor than that of Comparative Example 1. On the contrary, in the case of Comparative Example 3 in which an excess amount of each component was added compared to the surface-modified wood flour, the antibacterial and antibacterial performance was excellent, but there was a disadvantage of lowering the impact resistance.

On the other hand, Comparative Example 4 to which polylysine was not added exhibited antibacterial antibacterial performance by rosin and linseed oil similar to Comparative Example 1, but its performance was slightly inferior to the Example, and Comparative Example 5 to which volcanic ash was not added There was a disadvantage that the sound absorbing and insulating performance was slightly inferior to the Example.

In addition, Comparative Example 6 using only linseed oil without using a mixture of rosin and linseed oil as an adhesive and Comparative Example 7 using only rosin were poor in impact resistance due to poor adhesion.

In addition, in Comparative Examples 8 and 9 using wood powder that was not surface-modified with POSS, Comparative Example 8, in which only the presence or absence of the surface modification of wood powder was different, had both excellent antibacterial antibacterial performance and sound absorbing and insulating performance, but lower impact resistance compared to the examples. In the case of Comparative Example 9, in which a floor material was manufactured in the same manner as in Korean Patent Publication No. 10-1302198 previously filed by the same inventor, antibacterial and antibacterial performance was exhibited by rosin and linseed oil, but Examples Compared to that, the performance was slightly inferior, and the sound absorbing and insulating performance and impact resistance were also slightly inferior to the Example.

On the other hand, in the case of Comparative Example 10 using only one type of volcanic ash having an average diameter of 1.5 mm, the sound absorbing and insulating performance and impact resistance were lower than those of Examples in which two types of volcanic ash having different sizes were mixed as volcanic ash. As compared to Example 3, the sound absorbing and insulating performance was 4.1 dB at 400 Hz, 12.9 dB at 800 Hz, and 33.7 dB at 2000 Hz, and the impact resistance was 50 cm.

Although the present invention has been described through the above-specified matters and limited embodiments, this is only provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments, and the present invention pertains to Those of ordinary skill in the field can make various modifications and variations from these descriptions.

Therefore, the spirit of the present invention is limited to the described embodiments and should not be defined, and all things that are equivalent or equivalent to the claims as well as the claims to be described later fall within the scope of the spirit of the present invention. .

100: eco-friendly flooring
1: bottom fiber layer
2: cork layer
3: Wood plank layer
4: surface material layer

Claims (7)

Floor fiber layer; A cork layer formed on the bottom fiber layer; A wood board layer formed on the cork layer; And a surface material layer formed on the wooden board material layer,
The surface material layer is characterized in that it comprises wood powder, limestone, pigment, polylysine, volcanic ash, rosin and linseed oil, surface-modified with polyhedral oligomer silsesquioxane,
The surface-modified wood flour with the polyhedral oligomer silsesquioxane is surface-modified by adding wood flour to the polyhedral oligomer silsesquioxane solution and stirring for 1 to 60 hours at 20 to 100°C.
The method of claim 1,
The floor fiber layer will contain any one or two or more selected from the group consisting of hemp, ramie, hemp, and cotton fabric.
The method of claim 1,
The woody board material layer includes any one or two or more selected from the group consisting of medium-density fiberboard (MDF), high-density fiberboard (HDF), solid wood, veneer, plywood, and particle board (PB). Phosphorus, eco-friendly flooring.
a) preparing a surface material layer with a composition for a surface material comprising wood powder, limestone, pigment, polylysine, volcanic ash, rosin and linseed oil, which is surface-modified with polyhedral oligomer silsesquioxane;
b) applying a first natural adhesive to one surface of the surface material layer and then bonding it to one surface of the wood panel material layer;
c) applying a second natural adhesive to the other surface of the wood plank layer and then bonding it to one surface of the cork layer; And
d) laminating a bottom fiber layer on the other surface of the cork layer;
Including,
The wood flour surface-modified with the polyhedral oligomer silsesquioxane is surface-modified by adding wood flour to the polyhedral oligomer silsesquioxane solution and stirring at 20 to 100° C. for 1 to 60 hours to produce an eco-friendly flooring material.
delete The method of claim 4,
In the step a), the composition for surface material is molded into a board shape and then aged for 0.5 to 48 hours at 20 to 100°C in a humid atmosphere.
The method of claim 4,
The first natural adhesive and the second natural adhesive comprises rosin and linseed oil.

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