KR102515277B1 - Method for manufacturing wood furniture capable of controlling humidity - Google Patents

Abstract

Disclosed are a method for preparing a paint composition for wood furniture and a paint composition for wood furniture prepared thereby. The preparation method of the present invention comprises the steps of: adding silica precursor to a solvent containing a solution of branched polyethyleneimine dissolved in distilled water and a cationic surfactant solution dissolved in cyclohexane to prepare a colloid solution; adding metal particles and humidity control powder to the colloidal solution and agitating the mixture to form a composite; drying the composite to obtain the composite powder and then thermally treating the same to prepare porous composite powder; and mixing the porous composite powder with zeolite powder, volcanic ash powder, kaolin powder, elvanite powder, cellulose nanofibers, polyvinyl alcohol, polyethylene glycol, potassium carbonate, a pigment, a mixed extract, isopropyl alcohol, and water to agitate the mixture.

Description

Method for manufacturing wooden furniture capable of controlling humidity {METHOD FOR MANUFACTURING WOOD FURNITURE CAPABLE OF CONTROLLING HUMIDITY}

Disclosed herein are a method for manufacturing a paint composition for wooden furniture, a paint composition for wooden furniture manufactured according to the method, and wood furniture capable of controlling humidity using the paint composition.

The conventional furniture manufacturing method of applying paint to the surface of furniture has limitations in that it is nothing more than obtaining design effects such as various types of patterns and decorations by applying paint of the lower and top coats to the surface of various types of furniture. Conventionally, there was a disadvantage in that it was difficult to implement various types of effects beneficial to the human body, such as radiating far-infrared rays by applying paint to the surface of furniture, or antibacterial and deodorizing effects.

Recently, in order to solve the above disadvantages, the paint applied to the furniture surface has been applied using a functional paint, but the functional paint has a disadvantage that its function is halved when dried after application. However, since it was only a paint with ocher added, the far-infrared emission effect could not be expected. In addition, when the loess is directly applied to furniture, the effect is excellent, but the surface is rough, so the feel is bad and it easily falls off during use. Accordingly, as the ocher surface is coated with the transparent layer again after the ocher is applied to the surface of the furniture, the far-infrared emission effect is reduced by half because the loess is wrapped in a form.

On the other hand, if there is no humidifier or dehumidifier that is a humidity control device in the room, there is a problem that the humidity is too high in summer and the discomfort index is high or mold is generated. It is necessary to develop multi-functional furniture that can provide humidity control, deodorization, and aesthetic effects with existing furniture products without additional purchase of home appliances to solve these life problems.

KR 2012-0104752 A

In one aspect, an object of the present invention is to provide a method for preparing a paint composition for wood furniture having a humidity control and/or antibacterial function.

In another aspect, an object of the present invention is to provide a paint composition for wood furniture having a humidity control and/or antibacterial function prepared according to the above manufacturing method.

In another aspect, an object of the present invention is to provide wooden furniture capable of controlling humidity using the coating composition.

In one aspect, the present invention comprises the steps of preparing a colloidal solution by adding a silica precursor to a solvent containing a solution of branched polyethyleneimine dissolved in distilled water and a cationic surfactant solution dissolved in cyclohexane; adding metal particles and moisture control powder to the colloidal solution in a weight ratio of 2 to 3:7 to 8 and stirring to form a composite; Drying the composite at 50 to 80 ° C. to obtain a composite powder, and then heat-treating at 300 to 700 ° C. to prepare a porous composite powder; And mixing and stirring zeolite powder, volcanic ash powder, kaolin powder, elvan powder, cellulose nanofibers, polyvinyl alcohol, polyethylene glycol, potassium carbonate, pigment, mixed extract, isopropyl alcohol and water with the porous composite powder. And, the metal particles include at least one selected from the group consisting of silver, copper, zinc and gold, and the moisture control powder is a mixture of loess and diatomaceous earth in a weight ratio of 4: 6 to 6: 4, and the mixture The extract is obtained by mixing the outpost, bark and kelp of water loofah ( Myriophyllum verticillatum ) at a weight ratio of 2 to 3: 3 to 4: 1, and the zeolite powder, volcanic ash powder, kaolin powder, elvan powder, cellulose nanofibers, Polyvinyl alcohol, polyethylene glycol, potassium carbonate, pigment, mixed extract, isopropyl alcohol, and water are 20 to 30 parts by weight, 10 to 20 parts by weight, and 10 to 20 parts by weight, respectively, based on 100 parts by weight of the porous composite powder. , 10 to 20 parts by weight, 5 to 10 parts by weight, 5 to 10 parts by weight, 3 to 7 parts by weight, 5 to 15 parts by weight, 1 to 20 parts by weight, 10 to 20 parts by weight, 5 to 10 parts by weight and 20 to 30 parts by weight, it provides a method for producing a paint composition for wood furniture.

In an exemplary embodiment, the cationic surfactant is cetyltrimethylammonium bromide, and the solvent is a branched polyethyleneimine solution having a concentration of 0.5 to 2 M and a cationic surfactant solution having a concentration of 0.01 to 0.05 M. to 3: may be mixed in a volume ratio of 7 to 9.

In an exemplary embodiment, the metal particles and the moisture controlling powder may be added in an amount of 30 to 40% by weight based on the total weight of the colloidal solution.

In one aspect, the present invention has the effect of providing a method for producing a paint composition for wood furniture having a humidity control and/or antibacterial function.

In another aspect, the present invention has an effect of providing a paint composition for wood furniture having a moisture control and/or antibacterial function prepared according to the above manufacturing method.

In another aspect, the present invention has an effect of providing wooden furniture capable of controlling humidity using the coating composition.

Hereinafter, the present invention will be described in detail.

In one aspect, the present invention comprises the steps of preparing a colloidal solution by adding a silica precursor to a solvent containing a solution of branched polyethyleneimine dissolved in distilled water and a cationic surfactant solution dissolved in cyclohexane; adding metal particles and moisture control powder to the colloidal solution in a weight ratio of 2 to 3:7 to 8 and stirring to form a composite; drying the composite at 50 to 80 ° C. to obtain a composite powder, and then heat-treating the composite at 300 to 700 ° C. to prepare a porous composite powder; And mixing and stirring zeolite powder, volcanic ash powder, kaolin powder, elvan powder, cellulose nanofibers, polyvinyl alcohol, polyethylene glycol, potassium carbonate, pigment, mixed extract, isopropyl alcohol and water with the porous composite powder. And, the metal particles include at least one selected from the group consisting of silver, copper, zinc, and gold, and the moisture control powder is a mixture of loess and diatomaceous earth in a weight ratio of 4: 6 to 6: 4, and the mixture The extract is obtained by mixing the outpost, bark and kelp of water loofah ( Myriophyllum verticillatum ) at a weight ratio of 2 to 3: 3 to 4: 1, and the zeolite powder, volcanic ash powder, kaolin powder, elvan powder, cellulose nanofibers, Polyvinyl alcohol, polyethylene glycol, potassium carbonate, pigment, mixed extract, isopropyl alcohol, and water are 20 to 30 parts by weight, 10 to 20 parts by weight, and 10 to 20 parts by weight, respectively, based on 100 parts by weight of the porous composite powder. , 10 to 20 parts by weight, 5 to 10 parts by weight, 5 to 10 parts by weight, 3 to 7 parts by weight, 5 to 15 parts by weight, 1 to 20 parts by weight, 10 to 20 parts by weight, 5 to 10 parts by weight and 20 to 30 parts by weight, it provides a method for producing a paint composition for wood furniture.

The coating composition for wood furniture prepared according to the above manufacturing method has a function of condensing, absorbing, evaporating, and releasing humidity in the air through a porous structure, and has the effect of providing a humidity control function that adjusts humidity according to changes in the external environment. . In addition, the paint composition for wood furniture provides an effect of adsorbing harmful chemicals through a porous structure. Accordingly, the concentration of harmful volatile substances such as volatile organic compounds and formaldehyde in the air can be reduced. In addition, the coating composition for wood furniture has an effect of providing antibacterial and/or antifungal properties through the composition of metal particles, zeolite powder, and mixed extract.

In an exemplary embodiment, the wooden furniture having a moisture control and/or antibacterial function may be provided by coating all or part of the surface of the wooden furniture with the coating composition for wooden furniture to a thickness of 0.5 to 2 mm.

In an exemplary embodiment, the coating composition for wooden furniture is coated on the surface of wooden parts having a shape such as a plate shape or a circle to a thickness of 0.5 to 2 mm, and the paint composition is attached to a part of furniture dug out to create a three-dimensional effect to control humidity. and/or wood furniture having an antibacterial function. The wood component material may be in the form of a plate-shaped board made of wood or processed to have a desired shape and texture.

In an exemplary embodiment, the cationic surfactant is cetyltrimethylammonium bromide, and the solvent is a branched polyethyleneimine solution having a concentration of 0.5 to 2 M and a cationic surfactant solution having a concentration of 0.01 to 0.05 M. to 3: preferably mixed in a volume ratio of 7 to 9 or 1 to 2: 8 to 9 in volume ratio.

In an exemplary embodiment, the silica precursor is preferably tetraethylorthosilicate (TEOS) in forming the porous composite powder.

In an exemplary embodiment, it is preferable in forming the porous composite powder that the metal particles and the moisture controlling powder are added in an amount of 30 to 40% by weight or 30 to 35% by weight based on the total weight of the colloidal solution.

In an exemplary embodiment, the porous composite powder may have an average pore size of 10 to 40 nm and a specific surface area of 500 to 700 m ² /g.

In the present invention, by preparing and using the porous composite powder as described above, the rough texture caused by the addition of ocher or diatomaceous earth or the problem of powder falling over time is improved, and the far-infrared emission effect and humidity control are excellent without reducing the effect even after drying the paint composition. effect can be provided.

In addition, the present invention improves the durability of the coating composition by using zeolite powder, volcanic ash powder, kaolin powder, elvan powder and potassium carbonate together with the porous composite powder, and further improves the humidity control function and the collection function of harmful volatile substances. It works.

In an exemplary embodiment, the cellulose nanofibers may have a diameter of 50 to 100 nm and a length of 50 to 200 nm. If the diameter and length of the cellulose nanofibers are out of the above ranges, the dispersion characteristics and adhesion characteristics of the coating composition may be deteriorated, or the moisture control function of the porous composite powder having an average pore size of 10 to 40 nm may be deteriorated.

In the present invention, by mixing cellulose nanofibers, polyvinyl alcohol, and polyethylene glycol with zeolite powder, volcanic ash powder, kaolin powder, elvan powder, and potassium carbonate in the porous composite powder, the viscosity is increased and the dispersion properties of each component in the paint composition are increased. and provides an effect of further improving the adhesion of the paint composition to the wood surface. Accordingly, it is possible to provide an excellent far-infrared ray emission effect and a humidity control effect without reducing the effect even after drying the coating composition.

The paint composition for wooden furniture according to the present invention can design wooden furniture with a desired color by adding a pigment commonly used in the art.

In an exemplary embodiment, the mixed extract is 60% to 70% (v / v) ethanol by mixing the pulverized water of loofah, bark and kelp in a weight ratio of 2 to 3: 3 to 4: 1 It may be extracted for 24 to 36 hours at room temperature with an aqueous solution. The aqueous ethanol solution may be added and extracted in an amount of 150 to 250 parts by weight based on 100 parts by weight of the pulverized product.

Loofah ( Myriophyllum verticillatum ) is a dicotyledonous plant belonging to the genus Haloragaceae and is a perennial plant distributed in Korea, China, East Siberia, North Africa, North America and Europe. It grows in groups in ponds or swamps, and its underground stems extend sideways in mud.

Wood dermis (木秦皮) refers to the bark of Fraxinus rhynchophylla Hance or a close relative plant, such as the bark of a branch or stem. The bark is called the dermis as a herbal medicine, but it is often called the dermis because it is confused with the dermis, which is the tangerine peel.

The coating composition for wood furniture according to the present invention adds an antibacterial function by mixing the mixed extract and isopropyl alcohol, and improves the dispersion characteristics, spreadability, and adhesion of the coating composition.

In an exemplary embodiment, one or more additives selected from the group consisting of a filler, a diluent, a flame retardant, and an antioxidant may be further mixed with the porous composite powder.

Hereinafter, the present invention will be described in more detail through examples. These examples are only for exemplifying the present invention, and it will be apparent to those skilled in the art that the scope of the present invention is not to be construed as being limited by these examples.

Example 1.

A mixed pulverized product was prepared by drying and pulverizing the outpost, wood dermis, and kelp of the water loofah and mixing each pulverized product in a weight ratio of 2: 3: 1. A mixed extract was prepared by adding 70% (v/v) aqueous ethanol solution corresponding to 200 parts by weight to 100 parts by weight of the total pulverized mixture, followed by extraction at room temperature for 36 hours, followed by filtration. The mixed extract was used in the preparation of the following paint composition for wood furniture.

A solvent was prepared by mixing a solution of branched polyethyleneimine having a concentration of 1 M dissolved in distilled water and a solution of cetyltrimethylammonium bromide having a concentration of 0.01 M dissolved in cyclohexane at a volume ratio of 1:9. Thereafter, tetraethylorthosilicate was added to the solvent in an amount corresponding to 1/50 of the volume, followed by stirring at room temperature for 12 hours to prepare a colloidal solution. Metal particles and moisture control powder were added in an amount of 35% by weight based on the total weight of the colloidal solution (metal particles and moisture control powder were added in a weight ratio of 3:7) and stirred to form a composite, and the composite was mixed with distilled water washed with Silver was added to the metal particles, and the moisture control powder was added by mixing loess and diatomaceous earth in a weight ratio of 6:4. The washed composite was dried at 65 ° C to prepare a composite powder, and then heat-treated at 400 ° C to remove branched polyethyleneimine and prepare a porous composite powder.

Based on 100 parts by weight of the porous composite powder prepared above, 30 parts by weight of zeolite powder, 20 parts by weight of volcanic ash powder, 20 parts by weight of kaolin powder, 20 parts by weight of elvan powder, 10 parts by weight of cellulose nanofibers, 10 parts by weight of polyvinyl alcohol, 7 parts by weight of polyethylene glycol, 10 parts by weight of potassium carbonate, 10 parts by weight of pigment, 20 parts by weight of the mixed extract prepared above, 10 parts by weight of isopropyl alcohol, and 30 parts by weight of water were mixed and stirred at 600 rpm to prepare a paint composition for wood furniture. did

Comparative Example 1.

A solvent was prepared by mixing a solution of branched polyethyleneimine having a concentration of 1 M dissolved in distilled water and a solution of cetyltrimethylammonium bromide having a concentration of 0.01 M dissolved in cyclohexane at a volume ratio of 1:9. Thereafter, tetraethylorthosilicate was added to the solvent in an amount corresponding to 1/50 of the volume, followed by stirring at room temperature for 12 hours to prepare a colloidal solution. A complex was formed from the colloidal solution, and the complex was washed with distilled water. The washed composite was dried at 65 ° C to prepare a composite powder, and then heat-treated at 400 ° C to remove branched polyethyleneimine and prepare a porous composite powder.

Based on 100 parts by weight of the porous composite powder prepared above, 10 parts by weight of silver particles, 16 parts by weight of ocher powder, 12 parts by weight of diatomaceous earth powder, 30 parts by weight of zeolite powder, 20 parts by weight of volcanic ash powder, 20 parts by weight of kaolin powder, elvan powder 20 parts by weight, 10 parts by weight of cellulose nanofibers, 10 parts by weight of polyvinyl alcohol, 7 parts by weight of polyethylene glycol, 10 parts by weight of potassium carbonate, 10 parts by weight of pigment, 20 parts by weight of the mixed extract prepared in Example 1, isopropyl A paint composition for wood furniture was prepared by mixing 10 parts by weight of alcohol and 30 parts by weight of water and stirring at 600 rpm.

Comparative Example 2.

A solvent was prepared by mixing a solution of branched polyethyleneimine having a concentration of 1 M dissolved in distilled water and a solution of cetyltrimethylammonium bromide having a concentration of 0.01 M dissolved in cyclohexane at a volume ratio of 1:9. Thereafter, tetraethylorthosilicate was added to the solvent in an amount corresponding to 1/50 of the volume, followed by stirring at room temperature for 12 hours to prepare a colloidal solution. Metal particles and moisture control powder were added in an amount of 35% by weight based on the total weight of the colloidal solution (metal particles and moisture control powder were added in a weight ratio of 3:7) and stirred to form a composite, and the composite was mixed with distilled water washed with Silver was added to the metal particles, and the moisture control powder was added by mixing loess and diatomaceous earth in a weight ratio of 6:4. The washed composite was dried at 65 ° C to prepare a composite powder, and then heat-treated at 400 ° C to remove branched polyethyleneimine and prepare a porous composite powder.

Based on 100 parts by weight of the porous composite powder prepared above, 30 parts by weight of zeolite powder, 20 parts by weight of volcanic ash powder, 30 parts by weight of kaolin powder, 20 parts by weight of elvan powder, 17 parts by weight of potassium carbonate, 20 parts by weight of pigment, isopropyl alcohol 20 parts by weight and 40 parts by weight of water were mixed and stirred at 600 rpm to prepare a paint composition for wood furniture.

Experimental example 1.

The coating compositions prepared in Example 1 and Comparative Examples 1 and 2 were applied to a 10 cm × 10 cm wooden board at a thickness of 1 mm, respectively, and the side and back sides of the specimen were coated with water repellent, so that moisture was absorbed and desorbed only on the front surface made it possible It was maintained for 12 hours in a constant temperature and humidity chamber at a room temperature of 25 ° C and a relative humidity of 50%, and then maintained for 12 hours in a constant temperature and humidity chamber at a room temperature of 25 ° C and a relative humidity of 90%. After repeating the above process three times, the weight according to each process was measured, and the moisture absorptive and desorptive amount was calculated by converting the difference between the weight during moisture absorption and the weight during desorption into a moisture absorptive and desorptive amount (g) per area (m ² ).

In addition, the antibacterial activity was evaluated according to a conventional method using the disk diffusion method, and the strains were Escherichia coli ATCC 25922 and Pseudomonas aeruginos a ATCC 15442. The strains grown in the liquid medium for 24 hours were each diluted 1/10, and 200 μl of them were spread well on an agar medium. Each prepared coating composition was wetted with 3 μl of a solution added to DMSO to a concentration of 20 mg/ml on a round filter paper having a diameter of about 8 mm, and then placed on an agar medium to spread on the agar medium. After incubation at 35 ° C. for 24 hours, the area where bacterial growth was inhibited (clear zone) was measured (X: no inhibitory effect, △: less than 1 mm, ○: more than 1 mm and less than 2 mm, ◎: >2 mm).

Moisture absorption and desorption (g/m ² ) Antibacterial (E. coli) Antibacterial (Pseudomonas aeruginosa) Example 1 286 ◎ ◎ Comparative Example 1 95 ○ ○ Comparative Example 2 182 △ △

As a result, as shown in Table 1, it was confirmed that the coating composition of Example 1 provided excellent moisture absorption and desorption and antibacterial properties. In Comparative Example 1, in which a coating composition was prepared by first preparing silica porous composite powder and then separately mixing metal particles and moisture control powder, a composite was formed by adding metal particles and moisture control powder together during preparation of porous composite powder. Compared to No. 1, it showed a significantly lower moisture absorptive and desorptive amount, and the antibacterial activity was also reduced. This shows that the humidity control and antibacterial properties can be further improved when the metal particles and the moisture control powder are configured in a composite form in the porous composite powder. In Comparative Example 2, in which a coating composition was prepared by adding kaolin powder, isopropyl alcohol, and water without adding cellulose nanofibers, polyvinyl alcohol, polyethylene glycol, and mixed plant extracts, the dispersion characteristics and adhesion characteristics of the composition were improved. It was not suitable for use as a paint composition due to its low content, and the antibacterial property was found to be insignificant.

As above, specific parts of the present invention have been described in detail, and for those skilled in the art, it is clear that these specific descriptions are only preferred embodiments, and the scope of the present invention is not limited thereby. something to do. Accordingly, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

Claims (3)

preparing a colloidal solution by adding a silica precursor to a solvent containing a solution of branched polyethyleneimine dissolved in distilled water and a cationic surfactant solution dissolved in cyclohexane;
adding metal particles and moisture control powder to the colloidal solution in a weight ratio of 2 to 3:7 to 8 and stirring to form a composite;
Drying the composite at 50 to 80 ° C. to obtain a composite powder, and then heat-treating at 300 to 700 ° C. to prepare a porous composite powder; and
Mixing and stirring zeolite powder, volcanic ash powder, kaolin powder, elvan powder, cellulose nanofibers, polyvinyl alcohol, polyethylene glycol, potassium carbonate, pigment, mixed extract, isopropyl alcohol and water with the porous composite powder, ,
The metal particles include at least one selected from the group consisting of silver, copper, zinc and gold,
The moisture control powder is a mixture of ocher and diatomaceous earth in a weight ratio of 4: 6 to 6: 4,
The mixed extract is extracted by mixing the outpost, bark and kelp of water loofah ( Myriophyllum verticillatum ) in a weight ratio of 2 to 3: 3 to 4: 1,
The zeolite powder, volcanic ash powder, kaolin powder, elvan powder, cellulose nanofibers, polyvinyl alcohol, polyethylene glycol, potassium carbonate, pigment, mixed extract, isopropyl alcohol, and water are each based on 100 parts by weight of the porous composite powder. 20 to 30 parts by weight, 10 to 20 parts by weight, 10 to 20 parts by weight, 10 to 20 parts by weight, 5 to 10 parts by weight, 5 to 10 parts by weight, 3 to 7 parts by weight, 5 to 15 parts by weight, 1 to 10 parts by weight 20 parts by weight, 10 to 20 parts by weight, 5 to 10 parts by weight, and 20 to 30 parts by weight, a method for producing a paint composition for wood furniture.
According to claim 1,
The cationic surfactant is cetyltrimethylammonium bromide,
The solvent is a mixture of a branched polyethyleneimine solution having a concentration of 0.5 to 2 M and a cationic surfactant solution having a concentration of 0.01 to 0.05 M in a volume ratio of 1 to 3: 7 to 9, of a paint composition for wood furniture. manufacturing method.
According to claim 1 or 2,
The metal particles and the moisture control powder are added in an amount of 30 to 40% by weight based on the total weight of the colloidal solution.