KR20230025155A - Composition for blocking radon and method for preparing the same - Google Patents
Composition for blocking radon and method for preparing the same Download PDFInfo
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- KR20230025155A KR20230025155A KR1020210107330A KR20210107330A KR20230025155A KR 20230025155 A KR20230025155 A KR 20230025155A KR 1020210107330 A KR1020210107330 A KR 1020210107330A KR 20210107330 A KR20210107330 A KR 20210107330A KR 20230025155 A KR20230025155 A KR 20230025155A
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- 229910052704 radon Inorganic materials 0.000 title claims abstract description 98
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 239000000203 mixture Substances 0.000 title claims abstract description 92
- 230000000903 blocking effect Effects 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 16
- 239000004814 polyurethane Substances 0.000 claims abstract description 16
- 230000005855 radiation Effects 0.000 claims abstract description 16
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 230000001678 irradiating effect Effects 0.000 claims abstract description 5
- 239000011256 inorganic filler Substances 0.000 claims description 14
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 14
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical group [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910021536 Zeolite Inorganic materials 0.000 claims description 7
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 7
- 239000012802 nanoclay Substances 0.000 claims description 7
- 239000010457 zeolite Substances 0.000 claims description 7
- -1 alkyl phenol ether Chemical compound 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000008199 coating composition Substances 0.000 claims description 3
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- 235000019329 dioctyl sodium sulphosuccinate Nutrition 0.000 claims description 2
- FBELJLCOAHMRJK-UHFFFAOYSA-L disodium;2,2-bis(2-ethylhexyl)-3-sulfobutanedioate Chemical compound [Na+].[Na+].CCCCC(CC)CC(C([O-])=O)(C(C([O-])=O)S(O)(=O)=O)CC(CC)CCCC FBELJLCOAHMRJK-UHFFFAOYSA-L 0.000 claims description 2
- YHAIUSTWZPMYGG-UHFFFAOYSA-L disodium;2,2-dioctyl-3-sulfobutanedioate Chemical compound [Na+].[Na+].CCCCCCCCC(C([O-])=O)(C(C([O-])=O)S(O)(=O)=O)CCCCCCCC YHAIUSTWZPMYGG-UHFFFAOYSA-L 0.000 claims description 2
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 claims description 2
- 239000011858 nanopowder Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 11
- 238000010894 electron beam technology Methods 0.000 description 11
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- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 241000191967 Staphylococcus aureus Species 0.000 description 3
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 2
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- 201000005202 lung cancer Diseases 0.000 description 2
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- 239000002689 soil Substances 0.000 description 2
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- 229920001817 Agar Polymers 0.000 description 1
- 229920000858 Cyclodextrin Polymers 0.000 description 1
- 229920002125 Sokalan® Chemical class 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
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- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical class ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
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- 230000036541 health Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
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- 230000009965 odorless effect Effects 0.000 description 1
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- 239000004584 polyacrylic acid Chemical class 0.000 description 1
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- 239000011118 polyvinyl acetate Chemical class 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D123/04—Homopolymers or copolymers of ethene
- C09D123/08—Copolymers of ethene
- C09D123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C09D123/0853—Vinylacetate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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Abstract
Description
본 발명은 라돈 차단용 조성물 및 이의 제조방법에 관한 것으로, 보다 상세하게는 우수한 라돈 차단 효과를 발현함과 동시에 항균성을 나타내는 조성물 및 이의 제조방법에 관한 것이다. The present invention relates to a composition for blocking radon and a method for preparing the same, and more particularly, to a composition exhibiting an excellent radon blocking effect and exhibiting antibacterial properties and a method for preparing the same.
최근 각종 건축 자재로부터 발생하는 유해물질들은 인체에 매우 유해하며, 특히 실내 공기질 관리 항목 중 하나인 라돈에 대한 위험성이 실내에서 주로 활동하는 현대인들에게 증가하고 있어 라돈의 적절한 관리가 요구되고 있다. 이와 같은 라돈은 222Rn의 원소 기호를 가지며, 암석이나 토양, 건축자재 등에 존재하는 우라늄이 몇 차례 붕괴를 거치는 과정에서 생성되는 무색, 무취, 무미의 기체인 자연 방사능 물질이다. Recently, harmful substances generated from various building materials are very harmful to the human body, and in particular, the risk of radon, which is one of indoor air quality management items, is increasing for modern people who are mainly active indoors, so proper management of radon is required. Radon has an element symbol of 222 Rn, and is a colorless, odorless, and tasteless gas that is naturally radioactive and is produced when uranium present in rocks, soil, and building materials undergoes several decays.
호흡을 통해 인체에 흡입된 라돈과 라돈 자손은 붕괴를 일으키면서 알파선을 방출하여 폐 조직을 파괴하는 것으로 알려져 있다. 이에 세계보건기구(WHO)는 전 세계 폐암 발생의 3 내지 14%가 라돈에 의한 것이며, 라돈을 흡연에 이은 폐암 발병 주요 원인물질로 규정하고 있다. 이러한 라돈의 위해성 때문에 WHO는'국제 라돈 방지 계획'을 수립 및 추진하며, 실내 공기 중 라돈 농도를 관리하도록 권고하고 있다.Radon and radon progeny inhaled into the human body through breathing are known to destroy lung tissue by emitting alpha rays while causing decay. Accordingly, the World Health Organization (WHO) defines radon as the main cause of lung cancer following smoking, with 3 to 14% of lung cancer cases worldwide being caused by radon. Because of the dangers of radon, WHO establishes and promotes an 'international radon prevention plan' and recommends management of radon concentration in indoor air.
이에 라돈을 차폐할 수 있는 물질로 건물 벽면을 도장하기 위한 라돈 차폐 시공이 제안되었다. 예를 들어 대한민국 특허공개 제10-2017-0085700호에서는 (a) 사이클로덱스트린(cyclodextrin)을 주성분으로 하는 흡착 기능성 올리고머 1 내지 30 중량%; (b) 프로필렌 글리콜 1 내지 10 중량%; (c) 에탄올 1 내지 10 중량%;(d) 증점제, 소포제, 및 분산제가 포함된 첨가제 1 내지 3중량%; 및 (e) 잔량의 물을 포함하는 것을 특징으로 하는 라돈 저감용 수성 코팅제 조성물을 제시하고 있다.Accordingly, radon shielding construction for painting the walls of buildings with materials capable of shielding radon has been proposed. For example, in Korean Patent Publication No. 10-2017-0085700, (a) 1 to 30% by weight of an adsorption functional oligomer containing cyclodextrin as a main component; (b) 1 to 10% by weight of propylene glycol; (c) 1 to 10% by weight of ethanol; (d) 1 to 3% by weight of additives including a thickener, an antifoaming agent, and a dispersant; And (e) it proposes an aqueous coating composition for reducing radon, characterized in that it comprises a residual amount of water.
상기 제시한 조성물은 콘크리트의 표면에 코팅막을 형성하는 방식이나, 상기 제시한 코팅막으로는 코팅막에 손상이 발생하기 쉬워서 라돈 차단 효과를 장시간적으로 유지할 수 없게 되고, 건물, 건축 자제 등의 틈과 같은 부분에 적용이 어려운 문제가 있다. 또한, 종래 사용되는 일부 도료는 클로로프렌, 폴리초산비닐, 폴리아크릴산에스테르 등 접착력이 우수한 화학제품을 사용하며, 이러한 합성수지 접착제는 도장한 후에 휘발성 모노머가 잔류하고, 또한 화재발생 시 유독가스가 발생될 수 있으므로 완벽하게 환경에 무해하다고 단정할 수는 없는 문제가 있다. The composition presented above is a method of forming a coating film on the surface of concrete, but the coating film presented above is easy to damage the coating film, making it impossible to maintain the radon blocking effect for a long time, such as gaps in buildings and construction materials. There is a problem that is difficult to apply to the part. In addition, some conventionally used paints use chemicals with excellent adhesion, such as chloroprene, polyvinyl acetate, and polyacrylic acid esters, and these synthetic resin adhesives have volatile monomers remaining after painting, and toxic gases may be generated in the event of a fire. Therefore, there is a problem that cannot be concluded that it is completely harmless to the environment.
따라서, 건물, 건축 자제 등의 균열 또는 틈새 사이로 유입되는 라돈 저감에도 적용이 가능한 바와 같이 적용 영역이 넓으며, 친환경적이고 인체에 무해한, 나아가 항균 활성을 갖는 라돈 차단용 페이스트 관련 기술이 개발되는 경우 관련 분야에서 널리 적용될 수 있을 것으로 기대된다. Therefore, as it can be applied to reducing radon entering through cracks or crevices of buildings and construction materials, the applicable area is wide, and if a radon blocking paste-related technology is developed that is environmentally friendly, harmless to the human body, and has antibacterial activity, It is expected to be widely applied in the field.
본 발명의 한 측면은 라돈 차단 성능이 우수하며, 항균 활성을 갖는 라돈 차단용 조성물을 제공하는 것이다. One aspect of the present invention is to provide a radon blocking composition having excellent radon blocking performance and antibacterial activity.
본 발명의 다른 측면은 상기와 같은 라돈 차단용 조성물의 제조방법을 제공하는 것이다.Another aspect of the present invention is to provide a method for preparing the radon blocking composition as described above.
이에 본 발명의 일 견지에 의하면 에틸렌비닐아세테이트(EVA), 폴리우레탄(PU) 및 음이온성 계면활성제를 포함하는, 라돈 차단용 조성물이 제공된다.Accordingly, according to one aspect of the present invention, a composition for blocking radon containing ethylene vinyl acetate (EVA), polyurethane (PU) and an anionic surfactant is provided.
본 발명의 다른 견지에 의하면, 상기 본 발명의 라돈 차단용 조성물을 마련하는 단계; 및 상기 라돈 차단용 조성물에 방사선을 조사하는 단계를 포함하는, 라돈 차단용 조성물의 제조방법이 제공된다.According to another aspect of the present invention, preparing a composition for blocking radon of the present invention; And there is provided a method for producing a radon blocking composition comprising the step of irradiating radiation to the radon blocking composition.
본 발명의 라돈 차단용 조성물은 인체에 무해하면서도 우수한 라돈 차폐 성능을 발현할 수 있으며, 나아가 항균 활성을 발현하므로, 건물, 건축 자제 등의 균열, 틈새 사이 등 다양한 대상으로부터의 라돈 발생을 효과적으로 차단할 수 있다. 특히, 본 발명의 라돈 차단용 조성물은 시공이 간단하여 용이한 공정에 의해 안전한 실내 환경을 구현하여 인체의 피해를 최소화할 뿐만 아니라 건물, 건축 자제 등의 수명을 늘릴 수 있는 이점이 있다.The radon blocking composition of the present invention can express excellent radon shielding performance while being harmless to the human body, and furthermore, since it exhibits antibacterial activity, it can effectively block radon generation from various objects such as between cracks and crevices in buildings and construction materials. there is. In particular, the composition for blocking radon of the present invention has the advantage of being simple in construction and implementing a safe indoor environment through an easy process to minimize damage to the human body and to extend the lifespan of buildings and construction materials.
도 1(a)는 황색포도상구균에 대한 실시예 1(좌) 및 실시예 2(우) 조성물의 항균 활성을 확인한 결과 사진이며, 도 1(b)는 대장균에 대한 실시예 1(좌) 및 실시예 2(우) 조성물의 항균 활성을 확인한 결과 사진이다.
도 2는 비교예 및 실시예의 조성물에 있어서 전자선 조사 선량에 따른 점도 변화를 나타낸 그래프이다.
도 3은 비교예 및 실시예의 조성물을 이용하여 제조된 필름의 40℃에서의 수축률을 확인한 결과를 나타낸 것이다.
도 4는 비교예 및 실시예의 조성물을 이용하여 제조된 필름의 TGA (Thermal gravimetric analysis) 측정 결과를 나타낸 것이다.
도 5(a)는 라돈 차단율 측정을 위하여 라돈 발생원이 담긴 병의 뚜껑의 구멍에 라돈 차단용 조성물(라돈 차폐제)을 배치하는 과정을 도식적으로 나타낸 것이며, 도 5(b)는 이를 이용한 라돈 차단율 실험 장치를 도식적으로 나타낸 것이다. 도 5(c)는 무기 필러에 따른 라돈 차단율(radiation shield, %)을 나타낸 것이며, 도 5(d)는 방사선 조사선량에 따른 라돈 차단율 결과를 나타낸 것이다.Figure 1 (a) is a photograph of the result of confirming the antibacterial activity of the compositions of Example 1 (left) and Example 2 (right) against Staphylococcus aureus, Figure 1 (b) is Example 1 (left) and Example 2 (right) This is a photograph as a result of confirming the antibacterial activity of the composition.
Figure 2 is a graph showing the change in viscosity according to the electron beam irradiation dose in the compositions of Comparative Examples and Examples.
Figure 3 shows the results of confirming the shrinkage at 40 ℃ of the films prepared using the compositions of Comparative Examples and Examples.
Figure 4 shows the TGA (Thermal gravimetric analysis) measurement results of the films prepared using the compositions of Comparative Examples and Examples.
Figure 5 (a) schematically shows the process of disposing a radon blocking composition (radon shielding agent) in the hole of the lid of the bottle containing the radon generating source to measure the radon blocking rate, and Fig. 5 (b) is a radon blocking rate experiment using this It schematically shows the device. Figure 5 (c) shows the radon shielding rate (radiation shield, %) according to the inorganic filler, Figure 5 (d) shows the radon shielding rate result according to the radiation dose.
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시 형태를 설명한다. 그러나, 본 발명의 실시 형태는 여러 가지 다른 형태로 변형될 수 있으며, 본 발명의 범위가 이하 설명하는 실시 형태로 한정되는 것은 아니다. Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention may be modified in various forms, and the scope of the present invention is not limited to the embodiments described below.
본 발명에 의하면 친환경적이고 인체에 무해하며, 항균 특성을 갖는 라돈 차단용 조성물이 제공된다. According to the present invention, there is provided a composition for blocking radon that is environmentally friendly, harmless to the human body, and has antibacterial properties.
본 발명의 라돈 차단용 조성물은 에틸렌비닐아세테이트(EVA), 폴리우레탄(PU) 및 음이온성 계면활성제를 포함하는 것으로, 보다 상세하게 상기 라돈 차단용 조성물은 라돈 차단용 조성물의 총 중량을 기준으로 40 내지 90 중량%의 에틸렌비닐아세테이트(EVA), 10 내지 50 중량%의 폴리우레탄(PU) 및 1 내지 10 중량%의 음이온성 계면활성제를 포함하는 것이다.The radon blocking composition of the present invention includes ethylene vinyl acetate (EVA), polyurethane (PU) and an anionic surfactant, and more specifically, the radon blocking composition contains 40% based on the total weight of the radon blocking composition. to 90% by weight of ethylene vinyl acetate (EVA), 10 to 50% by weight of polyurethane (PU) and 1 to 10% by weight of an anionic surfactant.
상기 에틸렌비닐아세테이트(EVA)의 함량이 라돈 차단용 조성물의 총 중량을 기준으로 40 중량% 미만인 경우에는 내충격 성능에 문제가 있고, 90 중량%를 초과하는 경우에는 점도 상승으로 작업성에 문제가 있다. 예를 들어 본 발명의 라돈 차단용 조성물은 에틸렌비닐아세테이트(EVA)를 라돈 차단용 조성물의 총 중량을 기준으로 60 내지 80 중량%를 포함할 수 있으며, 바람직하게는 65 내지 80 중량%를 포함하는 것이다. If the content of ethylene vinyl acetate (EVA) is less than 40% by weight based on the total weight of the radon barrier composition, there is a problem in impact resistance performance, and if it exceeds 90% by weight, there is a problem in workability due to an increase in viscosity. For example, the radon blocking composition of the present invention may include 60 to 80% by weight, preferably 65 to 80% by weight of ethylene vinyl acetate (EVA) based on the total weight of the radon blocking composition. will be.
상기 폴리우레탄(PU)의 함량이 라돈 차단용 조성물의 총 중량을 기준으로 10 중량% 미만인 경우에는 도막의 내후성, 내열성 향상을 기대할 수 없으며, 50 중량%를 초과하는 경우에는 작업성이 저하되는 문제가 있다. 예를 들어 본 발명의 라돈 차단용 조성물은 폴리우레탄(PU)를 라돈 차단용 조성물의 총 중량을 기준으로 20 내지 40 중량%를 포함할 수 있으며, 바람직하게는 25 내지 35 중량%를 포함하는 것이다. If the polyurethane (PU) content is less than 10% by weight based on the total weight of the radon blocking composition, the weather resistance and heat resistance of the coating film cannot be improved, and if it exceeds 50% by weight, workability is deteriorated. there is For example, the radon blocking composition of the present invention may include 20 to 40% by weight of polyurethane (PU) based on the total weight of the radon blocking composition, preferably 25 to 35% by weight. .
상기 음이온성 계면활성제의 함량이 라돈 차단용 조성물의 총 중량을 기준으로 1 중량% 미만인 경우에는 열안정성이 저하되는 문제가 있고, 10 중량%를 초과하는 경우에는 도막의 내구성을 취약하게 되는 문제가 있다. 예를 들어 본 발명의 라돈 차단용 조성물은 음이온성 계면활성제를 라돈 차단용 조성물의 총 중량을 기준으로 1 내지 5 중량%를 포함할 수 있으며, 바람직하게는 1 내지 3 중량%를 포함하는 것이다. When the content of the anionic surfactant is less than 1% by weight based on the total weight of the radon blocking composition, there is a problem of lowering thermal stability, and when it exceeds 10% by weight, the durability of the coating film is weakened. there is. For example, the radon blocking composition of the present invention may include 1 to 5% by weight, preferably 1 to 3% by weight, of the anionic surfactant based on the total weight of the radon blocking composition.
본 발명에 사용될 수 있는 상기 음이온성 계면활성제는 도데실황산화나트륨(SDS), 소듐비스(2-에틸헥실)술포숙시네이트(AOT), 도데실벤젠술폰닉산, 소듐디옥틸술포숙시네이트, 소듐알킬페놀에테르술포네이트 및 소듐알킬술포네이트로 이루어진 그룹으로부터 선택되는 1종 이상의 음이온 계면활성제인 것일 수 있으며, 예를 들어 도데실황산화나트륨(SDS)을 사용할 수 있다.The anionic surfactants that can be used in the present invention are sodium dodecyl sulfate (SDS), sodium bis(2-ethylhexyl)sulfosuccinate (AOT), dodecylbenzenesulfonic acid, sodium dioctylsulfosuccinate, sodium It may be one or more anionic surfactants selected from the group consisting of alkyl phenol ether sulfonate and sodium alkyl sulfonate, and for example, sodium dodecyl sulfate (SDS) may be used.
나아나, 본 발명의 상기 라돈 차단용 조성물은 제올라이트, 활성탄 및 나노클레이로 이루어진 그룹으로부터 선택되는 1종 이상의 무기 필러를 추가로 포함하는 것일 수 있으며, 바람직하게는 제올라이트를 포함할 수 있다. 이와 같은 무기 필러를 추가로 포함하는 경우에는 라돈 차단율이 보다 향상될 수 있다. Furthermore, the radon blocking composition of the present invention may further include at least one inorganic filler selected from the group consisting of zeolite, activated carbon, and nanoclay, and preferably may include zeolite. When such an inorganic filler is additionally included, the radon blocking rate may be further improved.
본 발명에 사용될 수 있는 상기 무기 필러는 예를 들어 평균 200 내지 3,000 nm 입경을 갖는 나노 분말 형태인 것이 바람직하다. The inorganic filler that can be used in the present invention is preferably in the form of nanopowder having, for example, an average particle diameter of 200 to 3,000 nm.
한편, 상기 무기 필러는 에틸렌비닐아세테이트(EVA), 폴리우레탄(PU) 및 음이온성 계면활성제를 포함하는 혼합물 100 중량부 당 1 내지 20 중량부의 함량으로 포함되는 것이 바람직하며, 상기 혼합물 100 중량부 당 1 중량부 미만으로 포함되는 경우에는 무기 필러의 추가 효과가 불충분할 수 있으며, 혼합물 100 중량부 당 20 중량부를 초과하는 경우에는 작업성과 도막의 물성이 저하되는 문제가 있을 수 있다. On the other hand, the inorganic filler is preferably included in an amount of 1 to 20 parts by weight per 100 parts by weight of a mixture containing ethylene vinyl acetate (EVA), polyurethane (PU) and an anionic surfactant, per 100 parts by weight of the mixture If it is included in less than 1 part by weight, the additional effect of the inorganic filler may be insufficient, and if it exceeds 20 parts by weight per 100 parts by weight of the mixture, there may be problems in workability and physical properties of the coating film.
본 발명의 상기 라돈 차단용 조성물의 제형은 특히 한정되는 것은 아니지만 페이스트 제형일 수 있으며, 이와 같은 페이스트 제형인 경우 좁은 틈을 포함하는 다양한 적용처에서 사용될 수 있어 적용 대상이 제한이 없다. 예를 들어 본 발명의 상기 라돈 차단용 조성물은 코팅용 조성물인 것일 수 있다.The formulation of the radon blocking composition of the present invention is not particularly limited, but may be a paste formulation, and in the case of such a paste formulation, it can be used in various applications including narrow gaps, and thus the application target is not limited. For example, the radon blocking composition of the present invention may be a coating composition.
나아가, 본 발명에 의하면 본 발명의 라돈 차단용 조성물의 제조방법이 제공된다. Furthermore, according to the present invention, a method for preparing the composition for blocking radon of the present invention is provided.
본 발명의 라돈 차단용 조성물의 제조방법은 상술한 본 발명의 라돈 차단용 조성물을 마련하는 단계; 및 상기 라돈 차단용 조성물에 방사선을 조사하는 단계를 포함하는 것이다. The manufacturing method of the radon blocking composition of the present invention includes the steps of preparing the radon blocking composition of the present invention described above; and irradiating radiation to the radon blocking composition.
상기 라돈 차단용 조성물의 제조방법에 있어서 앞서 라돈 차단용 조성물에 관련하여 언급된 사항이 동일하게 적용된다.In the method for preparing the composition for blocking radon, the above-mentioned items related to the composition for blocking radon are equally applied.
방사선을 조사하는 단계에 적용될 수 있는 상기 방사선은 감마선, 전자선, 자외선 및 X선으로 이루어지는 그룹으로부터 선택되는 것일 수 있으며, 바람직하게는 전자선인 것이다. The radiation that can be applied in the step of irradiating radiation may be selected from the group consisting of gamma rays, electron beams, ultraviolet rays, and X-rays, and is preferably an electron beam.
이때 상기 방사선은 1 내지 50 kGy의 선량으로 조사되는 것일 수 있으며, 예를 들어 1 내지 20 kGy, 바람직하게는 2 내지 5 kGy의 선량으로 조사되는 것이다. 상기 방사선의 선량이 1 kGy 미만인 경우에는 라돈 차단용 조성물의 가교가 불충분한 경향이 있고, 50 kGy 초과인 경우에는 가교 밀도 상승으로 점도가 급격하게 증가되어 작업성이 저하되는 문제가 있다. In this case, the radiation may be irradiated with a dose of 1 to 50 kGy, for example, 1 to 20 kGy, preferably 2 to 5 kGy. When the radiation dose is less than 1 kGy, crosslinking of the radon blocking composition tends to be insufficient, and when it exceeds 50 kGy, the viscosity is rapidly increased due to the increase in crosslinking density, resulting in deterioration in workability.
이와 같이 방사선이 조사된 본 발명의 라돈 차단용 조성물은 시공 방법이 단순하고, 건물, 건축 자제 등의 균열, 틈새 사이에도 적용될 수 있어 이로부터 발생하는 라돈을 효과적으로 차폐할 수 있다. The composition for blocking radon of the present invention irradiated with radiation as described above has a simple construction method and can be applied even between cracks and crevices of buildings, construction materials, etc., so that radon generated therefrom can be effectively shielded.
보다 상세하게, 본 발명의 라돈 차단용 조성물의 시공방법은 상기 본 발명의 라돈 차단용 조성물을 기재에 도포하거나, 틈새 사이를 메우는 단계; 및 이를 건조하는 단계를 포함하는 것이다.More specifically, the construction method of the radon blocking composition of the present invention includes the steps of applying the radon blocking composition of the present invention to a substrate or filling in gaps; and drying it.
이때 본 발명의 라돈 차단 조성이 적용될 수 있는 상기 기재는 시멘트, 콘크리트, 플라스틱, 목재 판넬, 모래 및 자갈로 이루어진 그룹으로부터 선택되는 것일 수 있으나 이에 제한되는 것은 아니며, 예를 들어 상기 기재는 균열이나 틈이 있는 경우를 포함하는 것일 수 있다. 즉, 상기 도포하는 단계는 기재에 존재하는 틈을 메우는 공정을 포함하는 것일 수 있다. In this case, the substrate to which the radon blocking composition of the present invention can be applied may be selected from the group consisting of cement, concrete, plastic, wood panel, sand, and gravel, but is not limited thereto. It may include the case where there is. That is, the applying may include a process of filling gaps existing in the substrate.
한편, 상기 건조하는 단계는 상온에서 6 내지 24 시간 동안의 자연 건조에 의해 수행되는 것일 수 있으나, 이에 제한되는 것은 아니다. Meanwhile, the drying step may be performed by natural drying at room temperature for 6 to 24 hours, but is not limited thereto.
이와 같이 본 발명의 라돈 차단용 조성물은 시공이 간단하여, 용이한 공정에 의해 안전한 실내 환경을 구현하고 항균성을 나타내어 인체의 피해를 최소화할 뿐만 아니라 건물, 건축 자제 등의 수명을 늘릴 수 있는 이점이 있다. As described above, the radon blocking composition of the present invention is simple to construct, realizes a safe indoor environment through an easy process, and exhibits antibacterial properties, thereby minimizing damage to the human body and extending the lifespan of buildings and construction materials. there is.
이하, 구체적인 실시예를 통해 본 발명을 보다 구체적으로 설명한다. 하기 실시예는 본 발명의 이해를 돕기 위한 예시에 불과하며, 본 발명의 범위가 이에 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail through specific examples. The following examples are merely examples to aid understanding of the present invention, and the scope of the present invention is not limited thereto.
실시예Example
1. 라돈 차단용 조성물의 제조 방법 1. Method for producing a composition for blocking radon
에틸렌비닐아세테이트(EVA) 용액 및 폴리우레탄(PU)을 하기 표 1의 조성에 따라 혼합하고, 실시예 2 내지 4의 경우 무기 필러로서 제올라이트, 활성탄, 나노클레이를 각각 하기 표 1의 함량에 따라 첨가한 후 믹서(centrifugal mixer)를 이용하여 5분 동안 1700 rpm으로 혼합하였다. 나아가, EVA, PU, 및 무기 필러와의 상용성 향상과 제조된 필름 형태의 코팅층의 유연성 향상을 위해 도데실황산화나트륨(SDS)를 하기 표 1의 함량에 따라 혼합 후 전자선 가속기를 이용하여 0 내지 10 kGy의 전자선을 조사하였다. 다만 도데실황산화나트륨은 에틸렌비닐아세테이트(EVA) 용액 및 폴리우레탄(PU)과 함께 혼합할 수도 있다. Ethylene vinyl acetate (EVA) solution and polyurethane (PU) were mixed according to the composition of Table 1 below, and in the case of Examples 2 to 4, zeolite, activated carbon, and nanoclay were added as inorganic fillers according to the contents of Table 1 below, respectively. After that, the mixture was mixed at 1700 rpm for 5 minutes using a mixer (centrifugal mixer). Furthermore, in order to improve compatibility with EVA, PU, and inorganic fillers and to improve the flexibility of the manufactured film-type coating layer, sodium dodecyl sulfate (SDS) was mixed according to the content shown in Table 1 below, and then 0 to 0 using an electron beam accelerator. An electron beam of 10 kGy was irradiated. However, sodium dodecyl sulfate may be mixed with ethylene vinyl acetate (EVA) solution and polyurethane (PU).
2. 라돈 차단용 조성물의 항균성 시험2. Antibacterial test of radon blocking composition
16시간 전 배양한 황색포도상구균(ATCC 6538), 대장균(ATCC 8739)을 탁도가Mcfarland standard 0.5가 되도록 희석한 뒤, 이를 뮬러 힌튼 아가(Mueller Hinton agar)에 면봉 도말한다. Staphylococcus aureus (ATCC 6538) and Escherichia coli (ATCC 8739) cultured 16 hours ago were diluted so that the turbidity was Mcfarland standard 0.5, and then smeared on Mueller Hinton agar with a cotton swab.
면봉 도말 후 8 mm × 8 mm 도막 시료를 배지 정 중앙에 올리고 37℃에서 24시간 배양하고 페이퍼 디스크(paper disk) 주위의 클리어 영역(clear zone) 크기를 판정하였다. After smearing with a cotton swab, an 8 mm × 8 mm coating film sample was placed in the center of the medium and incubated at 37° C. for 24 hours, and the size of a clear zone around the paper disk was determined.
이때 클리어 영역(clear zone)의 판정 기준은 아래와 같다:At this time, the criteria for determining the clear zone are as follows:
약 30 cm 거리에서 육안으로 배지를 확인할 때 균이 전혀 성장하지 않은 범위를 클리어 영역으로 인정하며, 클리어 영역이 타원형일 경우 더 작은 지름을 클리어 영역으로 인정한다. 균이 옅게 성장하거나 단일 콜로니(single colony)가 있는 부분은 클리어 영역에서 제외하였다. When the medium is visually checked at a distance of about 30 cm, the range in which bacteria do not grow at all is recognized as a clear area, and if the clear area is oval, a smaller diameter is recognized as a clear area. A part where bacteria grew lightly or a single colony was excluded from the clear area.
그 결과, 도 1(a)에서 확인할 수 있는 바와 같이 황색포도상구균에서는 실시예 1(EPS) 및 실시예 2(EPSZe)의 조성 모두 클리어 영역 11 mm 의 항균 활성이 나타났으며, 도 1(b)에서 확인할 수 있는 바와 같이 대장균에서는 실시예 1(EPS) 9 mm, 실시예 2(EPSZe) 10 mm의 항균 활성을 나타냈다. As a result, as can be seen in FIG. 1 (a), in Staphylococcus aureus, both the compositions of Example 1 (EPS) and Example 2 (EPSZe) showed antibacterial activity in a clear area of 11 mm, and FIG. 1 (b) ) As can be seen in E. coli, Example 1 (EPS) 9 mm, Example 2 (EPSZe) 10 mm showed antibacterial activity.
3. 라돈 차단용 조성물의 점도 측정 3. Viscosity measurement of radon blocking composition
실시예 1 내지 5의 조성물에 전자선을 조사하였다. 이때 전자선 조사장치는 10 MeV 전자선 가속기(출력: 30 kW, 최대전류: 3 mA)를 활용하였고, 조사 선량은 각각 0, 1, 3, 5 및 10 kGy로 하였다.Electron beams were irradiated to the compositions of Examples 1 to 5. At this time, a 10 MeV electron beam accelerator (output: 30 kW, maximum current: 3 mA) was used as the electron beam irradiation device, and the irradiation doses were 0, 1, 3, 5, and 10 kGy, respectively.
그 결과 획득되는 조성물을 각각 50g씩 소분하여 점도를 측정하였다. 이때 점도를 측정하기 위해 BROOKFIELD 사의 LVDV-IT+ Digital viscometer 장비를 이용하여 실험을 진행하였다. 모든 조성물은 7번 스핀들을 이용하여 실험을 진행하였으며 rpm을 조절해가며 점도를 측정하고, 그 결과를 하기 표 2 및 도 2에 나타내었다. The resulting composition was subdivided into 50 g each, and the viscosity was measured. At this time, in order to measure the viscosity, an experiment was conducted using BROOKFIELD's LVDV-IT+ Digital viscometer equipment. All compositions were tested using spindle No. 7, and the viscosity was measured while adjusting the rpm, and the results are shown in Table 2 and FIG. 2 below.
점도 측정 결과, 음이온 계면활성제인 SDS의 첨가로 인하여 실시예 1(EPS)의 조성물이 비교예 1(EP)의 조성물 보다 증가된 점도를 나타냈으며, 무기 필러에 따른 점도를 비교한 결과 나노클레이(Nano clay)가 첨가된 시료에서 다소 높은 점도를 나타내는 것을 확인하였다. As a result of measuring the viscosity, the composition of Example 1 (EPS) exhibited an increased viscosity than the composition of Comparative Example 1 (EP) due to the addition of SDS, an anionic surfactant. As a result of comparing the viscosity according to the inorganic filler, the nanoclay ( It was confirmed that the samples to which Nano clay) was added showed somewhat higher viscosity.
한편, 전자선 조사 선량이 증가할 수록 점도의 크기가 증가하는 것을 확인할 수 있었다. 이는 EVA 및 PU가 방사선의 고에너지에 의하여 라디칼 형성을 통한 가교결합 형성으로 점도가 증가한 것임을 알 수 있다. On the other hand, it was confirmed that the size of the viscosity increased as the electron beam irradiation dose increased. It can be seen that the viscosity of EVA and PU is increased due to the formation of cross-links through the formation of radicals by the high energy of radiation.
4. 라돈 차단용 조성물을 이용한 필름의 물성 평가 4. Evaluation of physical properties of the film using the radon blocking composition
(1) 라돈 차단용 조성물을 이용한 필름의 제조(1) Manufacture of a film using a composition for blocking radon
3 kGy의 전자선을 조사한 비교예 1 및 실시예 1 내지 실시예 4의 조성물을 각각 이용하여 가로 2.5 cm, 세로 7.5 cm, 두께 0.1 cm 크기의 유리 프레임(glass frame)을 이용하여 캐스팅을 통해 필름 형태를 형성하고, 상온에서 건조하여 최종 필름을 제조하였다. Using the compositions of Comparative Example 1 and Examples 1 to 4 irradiated with a 3 kGy electron beam, respectively, a glass frame having a width of 2.5 cm, a length of 7.5 cm, and a thickness of 0.1 cm was used to form a film through casting. was formed and dried at room temperature to prepare a final film.
(2) 필름의 열안정성 평가 (2) Evaluation of the thermal stability of the film
상기 (1)에서 제조된 각 필름을 40℃의 오븐에 두고 시간 별 수축 상태를 확인하였다. Each film prepared in (1) was placed in an oven at 40 ° C., and the shrinkage state with respect to time was confirmed.
그 결과 도 3에서 확인할 수 있는 바와 같이 비교예 1(EP)을 조성물을 이용한 필름의 경우 시간에 따라 필름의 변형이 발생하였으나, SDS가 첨가된 본 발명의 조성물을 이용한 필름 변형이 발생하지 않았다. As a result, as can be seen in FIG. 3, in the case of the film using the composition of Comparative Example 1 (EP), the film was deformed over time, but the film was not deformed using the composition of the present invention to which SDS was added.
(3) 필름의 TGA (Thermal gravimetric analysis) 측정 (3) TGA (Thermal gravimetric analysis) measurement of the film
상기 (1)에서 제조된 각 필름의 열적 특성을 확인하기 위하여 TGA를 측정하였다. 측정 시 완전히 건조된 각 필름을 10 ℃/min 속도로 30 ℃ 에서 700 ℃까지 승온하여 측정하였다. TGA was measured to confirm the thermal characteristics of each film prepared in (1) above. At the time of measurement, each completely dried film was measured by raising the temperature from 30 °C to 700 °C at a rate of 10 °C/min.
그 결과 도 4에서 확인할 수 있는 바와 같이 각 필름에서 방사선 조사선량이 증가할수록 도막의 열전 안정성이 증가하는 것을 확인할 수 있었다. As a result, as can be seen in FIG. 4, it was confirmed that the thermoelectric stability of the coating film increased as the radiation dose in each film increased.
5. 라돈 차단용 조성물의 라돈 차단율 측정5. Radon blocking rate measurement of radon blocking composition
백색 메디아 병에 라돈 방출 농도가 높은 흙을 20 g씩 넣어 라돈 발생원으로 사용하였다. 지름 5 mm 크기의 원형 구멍을 갖는 메디아병 뚜껑에 구멍을 차단하는 라돈 차폐제로 3 kGy의 전자선이 조사된 본 발명의 실시예 1 내지 4의 각 조성물을 이용하여 구멍을 도 5(a)와 같은 방식으로 코팅한 후 24시간 동안 자연 건조하였다. 건조가 완료된 각각의 메디아 병을 도 5(b)에 도식적으로 나타낸 바와 같이 라돈 측정장치 (Radon eye plus 2)가 장착된 소형 아크릴 챔버에 넣은 후 가스 누출여부 검사를 통해 완전히 밀폐된 상태를 확인하여 7일 동안 라돈 차단율을 측정하였다. 20 g of soil with high radon emission concentration was put into a white media bottle and used as a radon generating source. Using each composition of Examples 1 to 4 of the present invention irradiated with 3 kGy of electron beam as a radon shielding agent for blocking the hole in the cap of a media bottle having a circular hole with a diameter of 5 mm, the hole was opened as shown in FIG. 5 (a). After coating in this way, it was naturally dried for 24 hours. As shown schematically in FIG. Radon blocking rate was measured for 7 days.
그 결과 도 5(c)에 나타난 바와 같이 제올라이트, 활성탄 및 나노클레이와 같은무기 필러가 첨가되어 제조된 조성물을 이용한 경우 약 90% 이상의 우수한 라돈 차단율을 나타냈으며, 특히 제올라이트가 첨가된 조성물을 이용한 경우 95% 이상의 우수한 라돈 차단율을 나타냈다. As a result, as shown in FIG. 5(c), when using a composition prepared by adding inorganic fillers such as zeolite, activated carbon, and nanoclay, an excellent radon blocking rate of about 90% or more was shown, especially when using a composition to which zeolite was added. It showed an excellent radon blocking rate of 95% or more.
한편, 실시예 1(EPS) 조성물을 이용하여 방사선 조사 선량을 다르게 하는 경우 도 5(d)에 나타난 바와 같이 방사선을 조사하지 않은 실시예 1의 조성물을 이용한 경우 80% 이하의 라돈 차단율을 나타냈지만, 방사선을 조사한 실시예 1의 조성물을 이용한 경우 방사선 조사에 의한 가교 구조 형성으로 필름의 형태학적 안정성이 증가하여 3kGy 및 5 kGy의 선량을 조사한 경우에서 모두 90% 이상의 라돈 차단율을 확인할 수 있었다.On the other hand, in the case of using the composition of Example 1 (EPS) and varying the irradiation dose, as shown in FIG. , In the case of using the composition of Example 1 irradiated with radiation, the morphological stability of the film increased due to the formation of a crosslinked structure by irradiation, and radon blocking rates of 90% or more were confirmed in both cases of irradiation with doses of 3 kGy and 5 kGy.
이상에서 본 발명의 실시예에 대하여 상세하게 설명하였지만 본 발명의 권리범위는 이에 한정되는 것은 아니고, 청구범위에 기재된 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 다양한 수정 및 변형이 가능하다는 것은 당 기술분야의 통상의 지식을 가진 자에게는 자명할 것이다.Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and variations are possible without departing from the technical spirit of the present invention described in the claims. It will be obvious to those skilled in the art.
Claims (10)
A composition for blocking radon comprising ethylene vinyl acetate (EVA), polyurethane (PU) and an anionic surfactant.
The method of claim 1, wherein the radon blocking composition is based on the total weight of the radon blocking composition 40 to 90% by weight of ethylene vinyl acetate (EVA), 10 to 50% by weight of polyurethane (PU) and 1 to 10 A composition for blocking radon comprising an anionic surfactant in weight percent.
The method of claim 1, wherein the anionic surfactant is sodium dodecyl sulfate (SDS), sodium bis (2-ethylhexyl) sulfosuccinate (AOT), dodecylbenzenesulfonic acid, sodium dioctyl sulfosuccinate, sodium At least one anionic surfactant selected from the group consisting of alkyl phenol ether sulfonate and sodium alkyl sulfonate, a composition for blocking radon.
The composition for blocking radon according to claim 1, further comprising at least one inorganic filler selected from the group consisting of zeolite, activated carbon, and nanoclay.
The composition for blocking radon according to claim 4, wherein the inorganic filler is in the form of nanopowder having an average particle size of 200 to 3,000 nm.
The composition for blocking radon according to claim 4, wherein the inorganic filler is included in an amount of 1 to 20 parts by weight per 100 parts by weight of the mixture including ethylene vinyl acetate (EVA), polyurethane (PU) and an anionic surfactant.
The composition for blocking radon according to claim 1, wherein the composition for blocking radon is a coating composition.
상기 라돈 차단용 조성물에 방사선을 조사하는 단계를 포함하는, 라돈 차단용 조성물의 제조방법.
Preparing a composition for blocking radon according to claim 1 to claim 7; and
A method for producing a radon blocking composition comprising the step of irradiating radiation to the radon blocking composition.
The method of claim 8, wherein the radiation is selected from the group consisting of gamma rays, electron rays, ultraviolet rays, and X-rays.
The method of claim 8, wherein the radiation is irradiated at a dose of 1 to 50 kGy.
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| EP22170429.9A EP4134982A1 (en) | 2021-08-13 | 2022-04-28 | Composition for blocking radon and method for preparing the same |
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| KR20200108198A (en) * | 2019-03-08 | 2020-09-17 | 주식회사 내추럴에코그룹 | Interior decoration board for construction using corrugated board |
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