KR100645097B1 - Method for intercepting noxious material in house utilizing phytoncide - Google Patents

Abstract

The present invention provides a method for blocking toxic substances in houses using phytoncide. According to the construction method according to the present invention, since the phytoncide is sustained and sustained release in the capsule, the phytoncide effectively blocks various harmful substances generated in the new house in the coating layer formed on the inner wall of the house, thereby causing environmental problems such as so-called sick house syndrome. Can be substantially solved.

Phytoncide, encapsulation

Description

Method for intercepting noxious material in house utilizing phytoncide}

1 is a schematic view of an inner wall of a building constructed by the method of the present invention.

2 is a cross-sectional view showing the layers of the inner wall of the building constructed by the method of the present invention.

The present invention relates to a method for blocking toxic substances in a house using phytoncide, and more particularly, to a method for blocking toxic substances generated in a newly constructed house by treating phytoncide with a finishing material on the inner wall of the house.

In Korea, the construction method is mainly represented by wet construction method and ondol and wall paper finish. During the curing of concrete, fine dust and alkali are discharged and a large amount of adhesive is used to solve the poor draft of the floor. Putty, glue, and adhesives are used, and the organic solvents used in these volatilize, and if the humid climate persists to provide a good condition for the growth of mold and bacteria, etc. will have a harmful effect on the human body.

In order to solve this problem and maintain a more comfortable indoor environment, conventionally, a method of applying ocher, charcoal, etc. to a wall, a method of spraying a photocatalyst to decompose harmful substances on the surface of the wallpaper, and a forced ventilation system have been introduced. However, these methods are not a more fundamental solution, such as the effects are temporary or contaminate the finishing materials, causing additional problems or additional burden of electricity bills.

Recently, phytoncide, a natural material, has been highlighted as a material that purifies indoor air and has an antibacterial effect. Phytoncide is essentially a volatile substance that is produced by trees to protect themselves from germs and the like, or essential oil of plants. Phytoncide is a generic term for antimicrobial substances produced by plants and does not refer to any one substance, and includes phenol compounds including terpenes, alkaloid components, glycosides, and the like. All plants have antimicrobial properties and therefore contain phytoncide in some form. Various experiments on phytoncide revealed deodorizing effect and non-toxicity of human body.

Thus, various fragrances, deodorizers, wet wipes, etc. using the same are used, which are disclosed in Korean Patent Laid-Open Publication Nos. 1998-0008246 and 2004-0080108. In addition, it is disclosed in Korean Patent Laid-Open Publication No. 2004-0021077 in which phytoncide is mixed with charcoal, diatomaceous earth, etc. having excellent adsorption and used in a coating composition.

However, simply mixing the phytoncide as described above and applying it to the wallpaper cannot expect a lasting effect, so a method of substantially maintaining the effect of the phytoncide for a long time is required, and more so in the field of architecture.

The first technical problem to be achieved by the present invention is to provide a construction method for blocking harmful substances generated in a new house using a composition containing a phytoncide as a building finishing material.

The second technical problem to be achieved by the present invention is to provide a construction method capable of imparting sustained release (slow emission) so that the phytoncide is effective in the long term.

The present invention is a construction method for treating the interior wall of the building as a finishing material in order to achieve the first technical problem, the first layer by injecting a mixed solution formed by adding 20 to 100 parts by weight of a solvent based on 100 parts by weight of the phytoncide stock solution to the building interior wall Forming; Additionally topcoating a phytoncide-encapsulated copolymer emulsion on the first layer to which the phytoncide is added to form a second layer; And it provides a building interior wall construction method comprising the step of attaching a paper sheet on the top coating.

The present invention provides a copolymer emulsion for encapsulating the phytoncide in order to achieve the second technical problem.

According to the construction method according to the present invention, since the phytoncide is sustained and sustained release in the capsule, the phytoncide in the coating layer formed on the inner wall of the house effectively blocks various harmful substances generated in the new house, so that environmental problems such as so-called sick house syndrome Can be substantially solved.

Hereinafter, the present invention will be described in more detail.

The present inventors have found that the phytoncide stock solution is encapsulated in a specific range of monomer composition emulsion polymerization and found that the effect is maintained for a long time when it is constructed by the above method and completed the present invention.

In the construction method of the present invention, in the case of treating the interior wall of a building such as an apartment house with a finishing material, injecting a mixed solution formed by adding 20 to 100 parts by weight of a solvent based on 100 parts by weight of the phytoncide stock solution to form a first layer. ;

Additionally topcoating a phytoncide-encapsulated copolymer emulsion on the first layer to which the phytoncide is added to form a second layer; And

It is a method for constructing the inner wall of the building including the step of attaching the paper on the top coating. This is shown schematically in FIGS. 1 and 2.

In the step of forming the first layer by injection, the mixture of 20 to 100 parts by weight of the solvent is added to 100 parts by weight of the phytoncide is coated on the inner wall of the concrete or cement of the building using a spray or the like. If the solvent is less than 20 parts by weight, it is difficult to be applied by spraying or the like due to viscosity problems, and when the solvent is more than 100 parts by weight, the consumption of the solvent is excessively large.

In this case, at least one solvent selected from the group consisting of ethyl alcohol, isopropyl myristate, and isopar M is used.

At this stage, the phytoncide can penetrate the inner wall to a certain depth to block harmful substances from the inner wall.

As the phytoncide stock solution in the step of forming the second layer by top coating, a phytoncide stock solution obtained from at least one member selected from the group of conifers consisting of pine, pine, cypress, and white is used.

The various antibacterial and deodorant effects of phytoncide are well known.

In April 2003, Chungbuk National University Institute of Veterinary Medicine treated the drug and protein essential oil in the cultured bacteria medium so that the bactericidal power of various bacteria can be compared with that of commercial drugs (antibiotic and antifungal agent). In comparison with the size of the circular ring, which ranges from 5% to 50% of the dilution, the antibiotics have the effect of comparable to that of ordinary antibiotics for most bacteria, and the bactericidal effect of Legionella is higher than that of antibiotics. Appeared. It is especially noteworthy that cypress essential oil is a natural substance and has a low resistance, which is a problem of general antibiotics.

In addition, in March 2003, the Korea Research Institute for Chemical Testing injected trimethylamine gas, a basic odor causing substance, into a 10L Tedala bag, adjusted the initial concentration to 500 ppm, injected 5 mL of cypress essential oil and, over time, trimethylamine. Deodorization effect was measured by measuring the change in concentration of gas. After 6 hours, the concentration of trimethylamine decreased to 75%.

The active ingredients of these phytoncide are mainly volatile substances such as terpenoil, camphoroil, limonene, and eucalyptol, so that their volatilization is maintained to some extent to maintain their effects for a long time. You need to control it. Such a method includes a method of adsorbing the volatile substance to an adsorbent or the like and encapsulating it in a capsule.

Among them, the encapsulation method is more preferable because the control of the thickness, density, etc. of the capsule is easy and precise control is possible.

Since phytoncides are primarily hydrophobic materials, encapsulation is done using O / W emulsions. O / W emulsion is preferable because the solvent is water because it can fundamentally eliminate the problem of volatilization of the harmful solvent of various conventional chemical paints.

In this case, it is possible to control the molecular weight of the polymer, the density of the capsule, etc. by varying the type of the monomer to be polymerized in various stages or by adding the reaction time or the like. Therefore, in order to maximize the sustained release, it is necessary to have a dense tissue structure so that the active ingredient is not easily released, and in order to adapt to the situation of maximum sustained release and subsequent construction, it is necessary to control the molecular weight of each layer from tens of thousands to hundreds of thousands. The component is preferably adjusted to an appropriate weight percentage.

The phyton-encapsulated copolymer prepared from such an emulsion has 50 to 100 parts by weight of alkyl methacrylate monomer, 110 to 190 parts by weight of alkyl acrylate monomer and 1 to 5 (meth) acrylic acid based on 100 parts by weight of the phytoncide stock solution. It is preferably a copolymer emulsion of less than 400 micrometers in diameter, emulsion polymerized, comprising parts by weight, emulsifier 0.1 to 5 parts by weight, and other minor additives.

When the emulsion is applied by spraying and applied to the inner wall of the building, the copolymer particles are close to each other as the solvent is volatilized and eventually they are connected to each other to have a continuous film form, and the phytoncide is discontinuously present in the film. The membrane prevents the passage of liquids, but allows the passage of moisture in the gaseous state or volatilized phytoncide, but allows phytoncide to block harmful components while facilitating humidity control in the room.

Alkyl methacrylates used in the present invention include methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, iso-propyl methacrylate, n-butyl methacrylate, iso-butyl methacrylate, n Amyl methacrylate, iso-amyl methacrylate, n-hexyl methacrylate, n-heptyl methacrylate, n-octyl methacrylate, 2-ethylhexyl methacrylate, n-nonyl methacrylate or n -Decyl methacrylate and the like are preferable.

Alkyl methacrylates act to impart mechanical strength to the capsules so that the capsules do not break too easily. The content of the alkyl methacrylate monomer is preferably 50 to 100 parts by weight based on 100 parts by weight of the phytoncide. If it is less than 50 parts by weight, the particles become too soft, and if it is more than 100 parts by weight, it is too dense to make volatilization of phytoncide difficult.

Alkyl acrylates used in the present invention include methyl acrylate, ethyl acrylate, n-propyl acrylate, iso-propyl acrylate, n-butyl acrylate, iso-butyl acrylate, n-amyl acrylate, iso- Amyl acrylate, n-hexyl acrylate, n-heptyl acrylate, n-octyl acrylate, 2-ethylhexyl acrylate, n-nonyl acrylate or n-decyl acrylate and the like are preferred.

Alkyl acrylates impart elasticity to the capsule and also affect the overall density of the capsule. Therefore, it maintains the spherical shape even under the pressure at the time of construction, enabling construction in more diverse environments and having a great influence on sustained release. The content of the alkyl acrylate monomer is preferably 100 to 200 parts by weight based on 100 parts by weight of the phytoncide. The alkyl group of the acrylate can be arbitrarily adjusted to various one or more mixtures in consideration of sustained release.

The (meth) acrylic acid used in the present invention functions as a crosslinking component with an acrylate which is another constituent monomer in the polymer and also acts as a dispersant for imparting the safety of the emulsion. It is in the range of 1 to 5 parts by weight based on 100 parts by weight of the phytoncide of such (meth) acrylic acid. If this ratio is less than 1 part by weight, there is a problem in that the emulsion is inferior in safety, and in the case of more than 5 parts by weight, the alkali resistance of the polymer is inferior.

It does not specifically limit as an emulsifier, A well-known thing can be used, Dodecyl benzene sulfonate sodium salt, lauryl fatty acid sodium salt, alkyl sulfate sodium salt, alkyl diphenyl ether disulfonic acid sodium salt, alkyl naphthalene sulfonate sodium salt, sodium dioctyl sulfonate Anionic emulsifiers such as succinate, polyoxyethylene alkyl ether fatty acid sodium salt, polyoxyethylene amcal phenyl ether fatty acid sodium salt: polyoxy ethylene lauryl ether, polyoxy ethylene nonyl ether, polyoxy ethylene octyl phenyl ether, polyoxy Nonionic emulsifiers such as ethylene nonyl phenyl ether and oxyethylene oxypropylene block copolymers; cationic emulsifiers such as lauryl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, and trimethyl octadecyl ammonium chloride.

Although the quantity of the emulsifier used is not specifically limited, About 0.1-5 weight part is preferable with respect to 100 weight part of phytoncide.

On the other hand, the copolymer encapsulating the phytoncide may be prepared by additionally including an urethane-based monomer, an epoxy-based monomer, a vinyl alcohol-based monomer, a melamine resin, and the like in addition to the acrylate system.

The average particle size of the copolymer resin emulsion obtained by the polymerization is preferably less than 400 µm. If it is 400 μm or more, it is not suitable for construction by spraying or the like.

Among the phyton-encapsulated copolymers, 50 to 100 parts by weight of methyl methacrylate monomer, 100 to 150 parts by weight of butyl acrylate monomer, 10 to 40 parts by weight of ethyl acrylate monomer, based on 100 parts by weight of the phytoncide stock solution, ( More preferred is an emulsion polymerized copolymer having a diameter of less than 400 micrometers, characterized in that it comprises 1 to 5 parts by weight of meta) acrylic acid, 0.1 to 5 parts by weight of lauryl sulfate sodium salt, and other trace additives,

Most preferably, 60 to 80 parts by weight of methyl methacrylate monomer, 110 to 120 parts by weight of butyl acrylate monomer, 20 to 30 parts by weight of ethyl acrylate monomer, and 4 to 5 parts of (meth) acrylic acid based on 100 parts by weight of phytoncide stock solution Parts, lauryl sulfate sodium salt of 4 to 5 parts by weight, and other emulsions, copolymer emulsion of less than 400 micrometers in diameter, characterized in that it comprises a trace additive.

In this step, a copolymer containing phytoncide is present between the inner wall and the wallpaper to block harmful substances emitted from the adhesive used for the wallpaper, and at the same time, volatilize the phytoncide through the wallpaper to impart a refreshing feeling to the interior of the building. have.

Hereinafter, the present invention will be described in more detail with reference to preferred embodiments, but the present invention is not limited thereto.

Production Example (Phytoncide capsule manufacture)

100 parts by weight of ion-exchanged water was added to a stainless reactor equipped with a 2L stirrer and heated to 80 ° C., followed by 40 parts by weight of the phytoncide stock solution, 25 parts by weight of methyl methacrylate, 45 parts by weight of butyl acrylate, and 10 parts by weight of ethyl acrylate. 2 parts by weight of acrylic acid and 1.5 parts by weight of a lauryl sulfate sodium salt were continuously added dropwise while stirring, and then 1 part by weight of the polymerization catalyst 2,2-azobis-2-aminodipropane was continuously added dropwise to carry out the polymerization reaction. After time, the polymerization was completed, and an emulsion having a solid concentration of 50% was obtained. Physical properties of the emulsion are shown in Table 2 below. The emulsion was filtered through a 200 mesh (400 μm or more in diameter) screen to separate bulky copolymer particles.

Physical Properties of Phytoncide Emulsions Exterior importance pH Solid content Viscosity (cP) Average particle size (nm) White liquid 1.012 7 51 30 200

Sustained release test

A mixture of 100 parts by weight of the phytoncide stock solution and 50 parts by weight of ethyl alcohol was sprayed onto the cement on the inner wall of a room of a newly constructed apartment (4 pyeong, 13.2 m 2). After 30 minutes for solvent volatilization and absorption into the inner wall, the phytoncide emulsion was again spray applied. A dopant was applied 24 hours later to promote sufficient volatilization of moisture and formation of the polymer film (Room A).

In a room of the same size and structure of the same new building apartment, the same amount of phytoncide as the amount used in room A was simply mixed with the paper solution to construct a paper (B).

After opening the windows for 6 days and ventilating the two rooms, the windows were closed on the 7th day, and after 10 hours, the testers were placed in the room, and the sensory test of the smell of phytoncide from the room was carried out. A strong room was chosen. The same method was tested for 10 weeks. The number of evaluators was ten.

Week 1 2nd week 3rd week 4 weeks Week 5 Week 6 Week 7 Week 8 Week 9 Week 10 Room A 4 5 4 6 7 8 9 10 9 10 Room B 6 5 6 4 3 2 One 0 One 0

As shown in Table 2, there was no difference until 4 weeks, but after 5 weeks, the phytoncide was mostly volatilized and disappeared in the case of room B, but the effect was no longer effective. This is illustrated well in FIG. 3.

 According to the construction method according to the present invention, since the phytoncide is sustained and sustained release in the capsule, the phytoncide effectively blocks various harmful substances generated in the new house in the coating layer formed on the inner wall of the house, thereby causing environmental problems such as so-called sick house syndrome. Can be substantially solved.

Claims (5)

In the construction method of treating the interior wall of the building as a finishing material, Injecting a mixed solution formed by adding 20 to 100 parts by weight of a solvent based on 100 parts by weight of the phytoncide stock solution to the inner wall of the building to form a first layer; Additionally topcoating a phytoncide-encapsulated copolymer emulsion on the first layer to which the phytoncide is added to form a second layer; And And attaching a paper sheet on the top coating. The method of claim 1, wherein the phytoncide stock solution is obtained from at least one member selected from the group of conifers consisting of pine, pine, cypress and white. The method of claim 1, wherein the solvent is at least one selected from the group consisting of ethyl alcohol, isopropyl myristate, and isopar M. According to claim 1, wherein the phyton-encapsulated copolymer is 50 to 100 parts by weight of the alkyl methacrylate monomer, 110 to 190 parts by weight of the alkyl acrylate monomer, 1 to (meth) acrylic acid based on 100 parts by weight of the phytoncide stock solution A method for constructing a building interior wall, characterized in that it is an emulsion polymerized copolymer emulsion of less than 400 micrometers in diameter, comprising 5 parts by weight, emulsifier 0.1 to 5 parts by weight, and other trace additives. The method of claim 4, wherein the copolymer encapsulating the phytoncide further comprises a urethane monomer, an epoxy monomer, a vinyl alcohol monomer, and a melamine resin in addition to the acrylate system.

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