KR20040052920A - A composite of electromagnetic shielding bio-plaster using abandoned graphite included magnesia-carbon in iron mill - Google Patents
A composite of electromagnetic shielding bio-plaster using abandoned graphite included magnesia-carbon in iron mill Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
- C04B22/066—Magnesia; Magnesium hydroxide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/047—Zeolites
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0097—Anion- and far-infrared-emitting materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00258—Electromagnetic wave absorbing or shielding materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00637—Uses not provided for elsewhere in C04B2111/00 as glue or binder for uniting building or structural materials
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B2001/925—Protection against harmful electro-magnetic or radio-active radiations, e.g. X-rays
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
본 발명은 제철소 제강공정의 전기로에서 폐기되는 마그-카본(magnesia-carbon)이 함유되어 있는 흑연재를 이용하여 전자파 차폐 기능을 갖도록 하는 건축용 바름재에 관한 것으로, 폐흑연재를 습윤양생 및 건조 분쇄에 의하여 1.0mm 이하의 입도 분포를 갖는 흑연분말로 구성하고, 이 폐흑연 분말과 세라믹 재료인 제오라이트 분말을 5:3～10의 비율로 혼합된 것을 결합재 100 중량부에 대하여 5 내지 50중량부 첨가하여 구성된 것에, 0.1 ～ 1mm 입도의 분말상의 세라믹 재료인 경소 돌로마이트를 결합재 100중량부에 대하여 30 ～ 70중량부 첨가하여 구성된 것을 특징으로 하여 일상 생활환경에서 인체가 가장 흔하게 노출될 수 있는 주파수 영역의 전자파에 대한 우수한 차폐효과를 제공하여 청정한 생활환경용 건축자재로서 유효하게 사용될 수 있는 효과를 갖는다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building coating material having an electromagnetic shielding function by using graphite material containing magnesia-carbon, which is discarded in an electric furnace of a steel making process. The waste graphite material is used for wet curing and dry grinding. 5 to 50 parts by weight of graphite powder having a particle size distribution of 1.0 mm or less, and a mixture of this waste graphite powder and zeolite powder, which is a ceramic material, at a ratio of 5: 3 to 10, with respect to 100 parts by weight of the binder, It is composed of 30 ~ 70 parts by weight of light small dolomite, a powdery ceramic material with a particle size of 0.1 ~ 1mm with respect to 100 parts by weight of the binder, electromagnetic waves in the frequency range where the human body is most commonly exposed in the daily living environment. It has an effect that can be effectively used as a building material for a clean living environment by providing an excellent shielding effect for.
Description
본 발명은 제철소의 제강공정 중 전기로에서 파생되는 폐흑연을 이용하여 건축물의 내장재 또는 외장재로 사용될 수 있는 전자파 차폐 무기질계 도료 조성물에 관한 것으로, 더욱 상세하게는 전기로의 내화물로 이용되는 폐흑연재는 마그네시아-카본질이 함유되어 있는 흑연재료로서 일전기간 사용 후 전량 폐기되는 재료이다. 이 재료는 폐기된 후 일부 내화물로 재사용되거나 기타 용도로 사용되고 있다. 이러한 폐흑연재는 마그네시아 성분이 다량 함유되어 있어 마그네시아에 의한 원적외선 방사효과가 있으며, 흑연 및 카본은 전자파 차폐재로의 사용이 가능하다. 이 폐흑연재를 습윤 숙성 및 건조, 분쇄 등의 공정으로 가공 처리하여 무기질계 결합재, 수지, 충전재를 주성분으로 하는 건축용 전자파 차폐 조성물에 있어서, 전도성을 포함하는 기능성 물질로 폐흑연 분말과 제오라이트, 경소 돌로마이트를 사용함으로써 전자파 차폐 효율이 높아 일반적으로 흔하게 노출될 수 있는 전자파를 효율적으로 차폐할 수 있으며 원적외선 방출 효과가 우수한 전자파 차폐용 무기질계 바이오 바름재 조성물을 제공하는 것이다.The present invention relates to an electromagnetic shielding inorganic coating composition that can be used as interior materials or exterior materials of buildings by using waste graphite derived from an electric furnace during the steelmaking process of steel mills. More specifically, the waste graphite material used as a refractory to an electric furnace is magnesia. -It is a graphite material that contains carbon and it is a material that is discarded after use for the whole period. This material is discarded and then reused for some refractories or used for other purposes. Such waste graphite material has a large amount of magnesia component, which has far-infrared radiation effect due to magnesia, and graphite and carbon can be used as an electromagnetic shielding material. In the electromagnetic shielding composition for building, the waste graphite material is processed by wet aging, drying, pulverization, etc., and the inorganic binder, resin, and filler are used as a main component, and the waste graphite powder, zeolite and light dolomite are functional materials containing conductivity. By using the high electromagnetic shielding efficiency can be effectively shielded electromagnetic waves that can be commonly exposed to the general, to provide an inorganic-based bio-coating material composition for electromagnetic shielding excellent in the far infrared emission effect.
전자파는 매질을 지나면서 투과, 흡수 및 반사가 일어나며, 이러한 현상들은 매질의 종류와 형상 등에 영향을 받으며, 매질의 전자기적 성질에 따라 흡수체와 반사체로 구분될 수 있다.Electromagnetic waves are transmitted, absorbed, and reflected as they pass through the medium. These phenomena are affected by the type and shape of the medium, and may be classified into absorbers and reflectors according to the electromagnetic properties of the medium.
전자파 흡수체는 반사보다 흡수의 영역이 더 큰 물질을 의미하며 전자파 흡수는 크게 도전손실, 유전손실 또는 자성손실에 의해 일어나는 것으로 알려져 있으며, 일반적으로 도전 손실은 금속 등과 같은 전도성 물질에서 유전손실은 티탄산바륨과 같은 유전성 물질에서 그리고 자성손실은 페라이트 등과 같은 자성물질에서 주로 일어나며 목적에 따라 이들 중 적절한 물질을 사용하여 전자파를 흡수하는데 사용할 수 있는 것으로 공지되어 있다.An electromagnetic wave absorber means a material having a larger area of absorption than reflection, and electromagnetic wave absorption is known to be caused largely by conduction loss, dielectric loss, or magnetic loss. In general, the conduction loss is a conductive material such as metal, and the dielectric loss is barium titanate. It is known that in dielectric materials such as and magnetic losses mainly occur in magnetic materials such as ferrite and the like, and may be used to absorb electromagnetic waves using appropriate materials among them according to the purpose.
일본구 특개평3-217466호는 내습윤성이 우수한 불연성 무기계 전도성 도료 조성물을 기술하고 있는데, 이는 전도성 분말과 일반식M2O·nSiO2(M:Li,Na,K,n:몰비)로 표시되는 혼합수용성규산염 가운데, 적어도 Li염 및 Na염을 포함하고, 혼합수용성 규산염의 몰 조성은 [0.40∼0.75Li20·0.25∼0.60(Na20-K20)]·3∼3.5SiO2(단, Na20＞K20,Li20+Na20+K20=1)이고, 상기 혼합수용성 규산염의 수용액의 농도가 25∼35중량％이고, 상기 수용액에 대한 전도성 분말의 배합비율이 중량비로 0.4∼1.0인 것을 특징으로 하고 있으며, 전도성 분말로는 은가루, 니켈, 구리분말, 카본분말, 질화티탄분말, 이들의 분에 표면처리한 것, 마이카 또는 세리사이트 등의 무기분말을 양도성금속으로 피복한 것 등을 사용하였고, 바람직하게는 구리분말과 니켈분말이라고 기술하고 있다.Japanese Patent Laid-Open No. 3-217466 describes a non-flammable inorganic conductive coating composition having excellent wettability, which is a mixed water solubility represented by a conductive powder and a general formula M 2 O · nSiO 2 (M: Li, Na, K, n: molar ratio). Among the silicates, at least Li salts and Na salts are included, and the molar composition of the mixed water-soluble silicate is [0.40 to 0.75 Li20 · 0.25 to 0.60 (Na20-K20)] · 3 to 3.5SiO2 (where Na20> K20, Li20 + Na20). + K20 = 1), the concentration of the aqueous solution of the mixed water-soluble silicate is 25 to 35% by weight, and the mixing ratio of the conductive powder to the aqueous solution is 0.4 to 1.0 by weight, and the conductive powder is silver powder. , Nickel, copper powder, carbon powder, titanium nitride powder, surface treated on these powders, and inorganic powders such as mica or sericite coated with a transferable metal, and the like, and preferably copper powder and nickel powder It is described.
일본국 특개소62-153155호는 전자파 흡수제에 대하여 설명하고 있는데, 구체적으로 포틀랜드 시멘트 25중량％, 수재55중량％중에 수재와 용량비 24％ 내지 50％의 흑연을 포함하고, 액상 유기중합체 수성 에멀젼 20중량％를 혼합한 것을 특징으로 하며, 도전성 물질로 흑연만을 사용하고 있어 전자파 차폐 효율이 그다지 높지않은 문제점이 있었다.Japanese Patent Application Laid-Open No. 62-153155 describes an electromagnetic wave absorber. Specifically, 25% by weight of Portland cement and 55% by weight of a resin include graphite in water and a volume ratio of 24% to 50%, and a liquid organic polymer aqueous emulsion 20 Characterized by mixing the weight%, there is a problem that the electromagnetic shielding efficiency is not so high since only graphite is used as the conductive material.
국내 특허등록 제281697호는 도전성복합물에 있어, 도전성 재료가 0.05 내지 7.7mm의 입도를 갖는 입자형 탄소재료와 2 내지 40mm의 길이를 갖는 섬유형 탄소재료가 100:0.5∼100:140의 중량비로 혼합된 도전성 복합물에 대하여 기술하고 있으며 효과로서 본 특허에 의한 혼합물을 도전성 재료로 사용하여 전기응용분야에 적용이 가능한 수준인 1 내지 10 Ω-cm 정도로 낮출 수 있다고 기재하고 있을 뿐, 구체적으로 차폐 가능한 전자파 대역에 대한 구체적인 기술이 전혀 없는 문제점이 있다.Korean Patent Registration No. 281697 has a weight ratio of 100: 0.5 to 100: 140 in a conductive composite, in which the conductive material has a particulate carbon material having a particle size of 0.05 to 7.7 mm and a fibrous carbon material having a length of 2 to 40 mm. Mixed conductive composites are described, and as an effect, it is described that the mixture according to the present patent can be used as a conductive material and can be lowered to about 1 to 10 Ω-cm, which is applicable to electrical applications, and specifically shieldable. There is a problem that there is no specific technology for the electromagnetic wave band.
본 발명자는 이와 같은 종래의 전자파 차폐재료의 문제점을 개선하기 위해 연구를 계속한 결과, 제강공정 중 전기로에서 폐기되는 폐흑연에는 마그네시아-카본 결합물질이 공존함으로 인하여 공지의 흑연분말에 비교하여 전자파 차폐효과가 우수함을 확인하였으며, 일반적인 제강공정에서 사용되고 있는 경소 돌로마이트와 제오라이트를 폐흑연재와 혼합 사용하는 경우 상호 보완 작용에 의하여 원적외선 방사효율이 높아지고, 탈취효과가 우수하며, 전자파 차폐 효과가 공지의 여타 재료보다 탁월한 물성을 나타냄을 확인하고, 본 발명을 완성하게 되었다.The present inventors continued to improve the problems of the conventional electromagnetic shielding material, and as a result, magnesia-carbon bonding material coexists in the waste graphite discarded in the electric furnace during the steelmaking process, compared with the known graphite powder. When the light dolomite and zeolite used in the general steelmaking process are mixed with the waste graphite material, the far-infrared radiation efficiency is increased by the complementary action, the deodorizing effect is excellent, and the electromagnetic shielding effect is known. It confirmed that it shows more excellent physical property, and completed this invention.
본 발명은 도전성 물질로서 제철소 제강공정의 전기로에서 폐기되는 폐흑연과 원적외선 방사효과가 우수한 경소 돌로마이트와 탈취성능이 우수한 것으로 알려진 제오라이트 분말을 혼합하여 사용함으로써 전자파 차폐 효율과 바이오 기능이 우수한 전자파 차폐용 무기질계 바이오 바름재 조성물을 제공하는 것이다.The present invention uses a mixture of waste graphite discarded in an electric furnace of a steelmaking process as a conductive material and light dolomite having excellent far-infrared radiation effects and zeolite powder known to have excellent deodorizing performance. It is to provide a bio-based coating material composition.
본 발명에 의한 전자파 차폐용 무기질계 바름재 조성물은 폐흑연재, 결합재, 충전재, 혼합재, 수지 및 혼화제로 이루어지며, 1.0mm 이하의 입도 분포를 갖는 제철소 전기로의 폐흑연 분말과 제오라이트 분말이 5:3∼10의 비율로 혼합된 것을 결합재 100 중량부에 대하여 5 내지 50 중량부 비율로 혼합하는 것과 0.1～ 1mm 입도의 경소 돌로마이트 분말을 결합재 100 중량부에 대하여 30∼70중량부로 첨가하여 상온에서 전자파 차폐 특성을 갖는 건축물 내외장재용 무기질계 바이오 바름재 조성물을 제공하는 것이다.The inorganic coating material composition for shielding electromagnetic waves according to the present invention is composed of waste graphite, binder, filler, mixture, resin, and admixture, and the waste graphite powder and zeolite powder of the steel mill electric furnace having a particle size distribution of 1.0 mm or less are 5: 3. Shielding electromagnetic waves at room temperature by mixing the mixture in the ratio of -10 at a ratio of 5 to 50 parts by weight with respect to 100 parts by weight of the binder, and adding 0.1 to 1 mm of small-size dolomite powder at 30 to 70 parts by weight based on 100 parts by weight of the binder It is to provide an inorganic bio coating material composition for building interior and exterior materials having a characteristic.
이하, 본 발명을 상세히 설명하면 아래와 같다.Hereinafter, the present invention will be described in detail.
본 발명의 전자파 차폐 무기질계 바름재 조성물에 사용되는 결합재로는 보통 포틀랜드 시멘트, 슬래그 시멘트, 플라이 애쉬 시멘트, 알루미나 시멘트, 백 시멘트로부터 선택되는 1종 이상을 사용할 수 있다.As the binder used in the electromagnetic wave shielding inorganic coating material composition of the present invention, at least one selected from portland cement, slag cement, fly ash cement, alumina cement and white cement can be used.
본 발명에 따른 전자파 차폐 무기질계 바름재 조성물에 사용되는 수지로는 수용성 아크릴계로 결합재 100중량부에 대하여 5 내지 50중량부가 바람직하다. 이때, 수지의 함량이 5중량부 미만인 경우에는 조성물의 부착강도가 낮아지고 유변학적인 특성변화에 따른 박막 시공이 불가능하게 되고, 50중량부를 초과하는 경우에는 점성이 증가하고 기포가 발생하는 등 적절한 작업성 확보 및 도막형성이 어렵게 됨으로써 차폐 특성이 저하되는 문제점이 있다.As resin used for the electromagnetic wave shielding inorganic coating material composition which concerns on this invention, 5-50 weight part is preferable with respect to 100 weight part of binders with water-soluble acrylic. At this time, when the content of the resin is less than 5 parts by weight, the adhesion strength of the composition is lowered and thin film construction is impossible due to the change in rheological properties, and when the content is more than 50 parts by weight, the viscosity increases and bubbles are generated. There is a problem that the shielding properties are lowered due to the difficulty in securing the properties and forming the coating film.
본 발명에 따른 바이오 바름재 조성물에 전도성을 부여하기 위하여 첨가되는 흑연 분말은 입자형으로, 제철소 제강공정의 전기로에서 폐기되는 폐흑연을 사용하며, 폐흑연을 온도 섭씨 60도, 습도 70％ 이상의 조건에서 2시간 이상 숙성한 것을 다시 건조한 후 입자의 크기를 1.0 mm 이하의 범위로 분쇄한 것을 사용한다. 이때, 흑연분말의 입도가 1.0mm를 초과하는 경우에는 작업성이 저하되어 바람직하지 못하다. 또한, 본 발명의 전자파 차폐 조성물에 특징적으로 첨가되어 탈취 효능을 부여하게 되는 제오라이트는 흑연분말 5에 대하여 3 내지 10이 바람직하다.Graphite powder added in order to impart conductivity to the bio-coating material composition according to the present invention is a particulate form, using waste graphite discarded in the electric furnace of the steelmaking steelmaking process, the waste graphite is a temperature of 60 degrees Celsius, humidity of 70% or more After drying for 2 hours or more in the dried again, the size of the particles in the range of 1.0 mm or less is used. At this time, when the particle size of the graphite powder exceeds 1.0mm, workability is lowered, which is not preferable. In addition, the zeolite which is added to the electromagnetic wave shielding composition of the present invention to give a deodorizing effect is preferably 3 to 10 with respect to the graphite powder 5.
본 발명에 따른 기능성 혼합 물질은 결합재 100중량부에 대하여 5 내지 50 중량부의 비율로 첨가되는 것이 바람직한데, 기능성 혼합물질의 함량이 5중량부 미만인 경우에는 차폐효율이 크게 낮아지거나 차폐기능이 상실될 우려가 있고 탈취기능이 저하되며, 50중량부를 초과하는 경우에는 조성물을 건축 외장재로 도포하는 등 최종작업을 하였을 경우 표면상태가 불량해지고 응결이 지연되는 문제점이 있어 바람직하지 못하다.The functional mixture material according to the present invention is preferably added at a ratio of 5 to 50 parts by weight with respect to 100 parts by weight of the binder. When the content of the functional mixture is less than 5 parts by weight, the shielding efficiency may be greatly lowered or the shielding function may be lost. There is a concern that the deodorizing function is lowered, and if it exceeds 50 parts by weight, the final work such as applying the composition to the building exterior material is not preferable because there is a problem that the surface condition is poor and the condensation is delayed.
또한, 원적외선 방출기능을 부여하기 위하여 경소 돌로마이트를 사용하며, 결합재 100중량부에 대하여 30 내지 70 중량부를 첨가한다.In addition, light dolomite is used to impart far-infrared emission, and 30 to 70 parts by weight is added to 100 parts by weight of the binder.
조성물에 혼합되어 있는 각 물질의 혼합 및 분산을 돕기 위하여 유동화제나 충진재를 첨가할 수 있으며, 이러한 유동화제로는 나프탈렌계, 멜라민계 등이 사용될 수 있고, 결합재 100중량부에 대하여 0.3 내지 5중량부가 바람직하며 충진재로는 탄산칼슘이 바람직하며 결합재 100 중량부에 대하여 10 내지 100 중량부가 첨가될 수 있다.A fluidizing agent or a filler may be added to assist in mixing and dispersing each material mixed in the composition. As the fluidizing agent, naphthalene-based or melamine-based may be used, and 0.3 to 5 parts by weight is preferable with respect to 100 parts by weight of the binder. The filler is preferably calcium carbonate and may be added in an amount of 10 to 100 parts by weight based on 100 parts by weight of the binder.
조성물의 점도를 조절하기 위한 증점제 및 도포 후 표면상태를 균일성을 향상시키기 위한 소포제가 결합재 100중량부에 대하여 각각 0.1 내지 3중량부, 0.1 내지 5중량부 첨가될 수 있다.A thickener for adjusting the viscosity of the composition and an antifoaming agent for improving the uniformity of the surface state after application may be added in an amount of 0.1 to 3 parts by weight and 0.1 to 5 parts by weight based on 100 parts by weight of the binder, respectively.
상기에서 언급한 충전재와 증점제, 유동화제, 소포제 등은 시멘트 조성물 등에 일반적으로 사용되는 것으로, 본 발명을 위하여 특별히 한정되는 것은 아니다.The fillers, thickeners, glidants, antifoaming agents, etc. mentioned above are generally used in cement compositions and the like, and are not particularly limited for the present invention.
이하, 본 발명의 실시예를 상세히 설명하면 아래와 같고, 본 발명이 하기 실시예의 의해 제한되는 것은 아니며, 특허청구의 범위를 벗어나지 않는 범위 내에서 본 발명의 기술이 속하는 분야의 당업자에 의해 변형될 수 있음은 자명하다.Hereinafter, the embodiments of the present invention will be described in detail as follows, and the present invention is not limited by the following examples, and may be modified by those skilled in the art to which the technology of the present invention belongs without departing from the scope of the claims. It is self-evident.
실시예Example
결합재인 포틀랜드 시멘트, 수용성 아크릴 분말수지, 입도가 0.5mm인 폐흑연 분말, 입도가 0.2mm 이하인 제오라이트 분말, 경소 돌로마이트, 탄산칼슘 및 멜라민계 유동화제, 증점제, 소포제로 구성된 혼화제로 구성되고, 하기 표 1과 같은 조성비율을 갖는 본 발명에 따른 전자파 차폐 무기질계 바름재 조성물의 특성 측정결과를 하기 표 2에 나타내었다.Consists of a binder consisting of Portland cement, water-soluble acrylic powder resin, waste graphite powder with a particle size of 0.5 mm, zeolite powder with a particle size of 0.2 mm or less, light dolomite, calcium carbonate and melamine-based fluidizing agent, thickener, antifoaming agent, and the following table. The measurement results of the properties of the electromagnetic shielding inorganic coating material composition according to the present invention having the composition ratio as shown in Table 1 are shown in Table 2 below.
* 시험방법* Test Methods
실시예 1 내지 3과 같이 제조된 조성물과 물을 충분히 혼합한 후, 에어 스프레이건을 이용하여 가로, 세로 1m크기의 시멘트 압출 성형 판에 0.5mm두께로 도장한 후, 무기 도료로서의 물리적 특성을 측정하였다. 또한, 전자파 차폐 효과를 측정하기 위하여 ASTM D4935-99(30㎒-1.5㎓)에 의거하여 폴리에스테르 필름에 0.5mm 두께로 도장한 후 3일 동안 상대습도 65％± 3℃, 온도 23±3℃에서 양생한 후 측정하였다.After sufficiently mixing the composition prepared in Examples 1 to 3 and water, and then coated with an air spray gun 0.5mm thick on a cement extrusion plate of 1m in width and length, the physical properties as an inorganic paint is measured It was. In addition, in order to measure the electromagnetic wave shielding effect, the film was coated with a polyester film with a thickness of 0.5 mm according to ASTM D4935-99 (30 MHz-1.5 GHz), followed by a relative humidity of 65% ± 3 ° C. and a temperature of 23 ± 3 ° C. for 3 days. It was measured after curing at.
이상에서 살펴본 바와 같이, 본원 발명에 따른 제철소 전기로에서 폐기되는 폐흑연은 전자파 차폐용 재료로서 아주 유용하게 활용될 수 있으며, 이 폐흑연을 이용한 전자파 차폐 무기질계 바름재 조성물은 작업성이 용이하면서도 전자파 차폐효율이 우수하여 일상 생활에서 쉽게 노출될 수 있는 전자파를 효율적으로 차단할 수 있는 효과를 갖는 아주 유용한 발명인 것이다.As described above, the waste graphite discarded in the steel mill electric furnace according to the present invention can be very useful as an electromagnetic shielding material, the electromagnetic shielding inorganic coating material composition using the waste graphite is easy to work with electromagnetic waves Excellent shielding efficiency is a very useful invention having the effect of effectively blocking the electromagnetic waves that can be easily exposed in everyday life.
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