KR100458587B1 - Binding system for inorganic coating - Google Patents
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- KR100458587B1 KR100458587B1 KR10-2001-0084534A KR20010084534A KR100458587B1 KR 100458587 B1 KR100458587 B1 KR 100458587B1 KR 20010084534 A KR20010084534 A KR 20010084534A KR 100458587 B1 KR100458587 B1 KR 100458587B1
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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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
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
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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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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Abstract
본 발명은 무기계 내화도료 제조시 사용되는 무기계 결합제 조성물에 관한 것으로, 그 목적은 가격이 저렴하고 1300℃ 이상의 고온에서도 Al2O3-SiO2계 내화물과의 반응성이 낮아 장시간 사용이 가능한 무기계 내화도료용 결합제 조성물을 제공하는 데 있다. 이를 위해 본 발명에서는, 물과 충전제로 이루어진 무기계 내화도료 제조시 사용되는 결합제 조성물로서, SiO2와 Al2O3의 함량비인 SiO2:Al2O3가 3 ~ 4 이고, Na2O 함량 및 K2O의 함량의 합인 (Na2O + K2O)이 SiO2함량과 Al2O3함량의 합인 (SiO2+ Al2O3)에 대해 5 ~ 15 인 점토계 무기화합물을 사용하며, 무기계 내화도료 제조시 외삽으로 충전제의 함량에 대하여 0.5 ~ 2 중량% 첨가한다.The present invention relates to an inorganic binder composition used in the manufacture of inorganic refractory paints. The purpose of the present invention is to provide an inorganic refractory paint that can be used for a long time due to low cost and low reactivity with Al 2 O 3 -SiO 2 based refractory materials even at a high temperature of 1300 ° C. or higher. It is to provide a binder composition for. In the present invention, for this purpose, as the binder composition used in the manufacture of inorganic fire-resistant coating material consisting of water and a filler, the content of SiO 2 and Al 2 O 3 ratio SiO 2: and the Al 2 O 3 is 3 ~ 4, Na 2 O content and using the clay-based inorganic compound is a 5 to 15 for the sum of the content of K 2 O (Na 2 O + K 2 O) a SiO sum of 2 content and Al 2 O 3 content (SiO 2 + Al 2 O 3), and In the preparation of the inorganic refractory paints, extrapolated by 0.5 to 2% by weight of the filler content.
Description
본 발명은 무기계 내화도료용 결합제 조성물에 관한 것으로, 더욱 상세하게는 공업용 요로의 내장 내화물 표면에 도포하여 내화물을 보호하거나 단열, 열방사 등의 각종 기능을 발현하는 무기계 내화도료용 결합제 조성물에 관한 것이다.The present invention relates to a binder composition for inorganic refractory coatings, and more particularly, to an inorganic refractory coating binder composition which is applied to an internal refractory surface of an industrial urinary tract to protect the refractory or expresses various functions such as heat insulation and thermal radiation. .
고온으로 조업되는 공업용 요로에서 부식성 분위기로부터 내장 내화물을 보호하거나 요로의 열효율을 높이기 위해, 요로 내벽면에 열복사율이 높고 내식성이 우수한 내화도료를 도포하는 예가 많다.In order to protect internal refractories from corrosive atmospheres or to increase the thermal efficiency of the urinary tract in an industrial urinary furnace operated at a high temperature, there are many examples of applying a fireproof paint having high heat radiation rate and excellent corrosion resistance to the inner wall of the urinary tract.
일반적으로 무기계 내화도료는 무기 충전제, 결합제, 분산제 등의 기능성 첨가제를 물과 혼합하여 제조한다. 충전제는 무기도료의 용도에 따라 선택하며, 알루미나(alumina), 실리카(silica), 티타니아(titania), 지르코니아(zirconia), 크로마이트(chromite), 지르콘(zircon) 등의 산화물류, 실리콘카바이드(silicon carbide), 티타늄카바이드(titanium ciarbide) 등의 탄화물류, 실리콘나이트라이드(silicon nitride), 알루미늄나이트라이드(aluminum nitride) 등의 질화물류가 사용된다.In general, inorganic refractory paints are prepared by mixing functional additives such as inorganic fillers, binders, and dispersants with water. The filler is selected according to the application of the inorganic paint, and oxides such as alumina, silica, titania, zirconia, chromite, zirconia, zircon, and silicon carbide carbides such as carbide, titanium carbide and the like, and nitrides such as silicon nitride and aluminum nitride are used.
결합제로는 나트륨실리케이트(sodium silicate), 칼륨실리케이트(potassiumsilicate), 리튬실리케이트(lithium silicate) 등의 물유리나, 콜로이드 실리카(colloidal silica), 피브이씨(PVC), 피브이에이(PVA) 등의 유기화합물 등이 사용된다.The binder may be water glass such as sodium silicate, potassium silicate or lithium silicate, or organic matter such as colloidal silica, PVC, or PVA. Compounds and the like.
종래 기술로서 한국특허 2000-0067313에서는 규산 나트륨이나 규산 칼륨 등의 액상 규산염을 함유하는 무기 결합제를 사용한 도료 조성물을 제시한 바 있다.As a prior art, Korean Patent 2000-0067313 has proposed a coating composition using an inorganic binder containing a liquid silicate such as sodium silicate or potassium silicate.
또 다른 종래 기술로서 일본 특허 평10-25431에서는 결합제로서 규소 화합물인 RmSi(OR' n)w를 사용한 내열성이 우수한 무기도료의 조성물을 보고한 바 있다.As another conventional technique, Japanese Patent Laid-Open No. H10-25431 has reported a composition of an inorganic coating having excellent heat resistance using a silicon compound R m Si (OR ' n ) w as a binder.
이 외에도 한국특허 2000-010246에서는 오르가노알콕실란, 테트라알콕실란등의 가수분해물 및 축합물과 콜로리드 실리카를 결합제로 사용하였으며, 한국특허 2000-043675에서는 금속 알콕사이드를 결합제로 사용한 내열도료를 제시한 바 있다.In addition, Korean Patent 2000-010246 used hydrolysates and condensates such as organoalkoxysilanes and tetraalkoxysilanes and colloidal silica as binders, and in Korean Patent 2000-043675, heat-resistant coatings using metal alkoxides as binders were proposed. There is a bar.
그러나 알칼리 규산염계 결합제는 알칼리 성분이 10 ~ 25 중량% 함유되어 있어, 공업용 요로의 내장재로 사용되는 Al2O3-SiO2계 내화물과 1300℃ 이상의 고온에서 반응하여 저융점 화합물을 생성함으로써 요로의 내벽면이 손상되는 문제점이 있었다.However, the alkali silicate-based binder contains 10 to 25% by weight of the alkaline component, and reacts with Al 2 O 3 -SiO 2 -based refractory materials used as interior materials for industrial urinary tract at a high temperature of 1300 ° C. or higher to form low melting point compounds. There was a problem that the inner wall surface is damaged.
또한, 규소화합물, 금속 알콕사이드 등은 고온에서 내화물과의 반응성은 매우 낮지만, 가격이 고가이므로 내화물에 적용하는 도료용 결합제로 사용하기에는 경제성이 떨어지는 문제점이 있었다.In addition, silicon compounds, metal alkoxides, and the like have very low reactivity with refractory materials at high temperatures, but because of their high price, they are inferior in economic efficiency to be used as paint binders for refractories.
본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 그 목적은 가격이 저렴하고 1300℃ 이상의 고온에서도 Al2O3-SiO2계 내화물과의 반응성이 낮아 장시간 사용이 가능한 무기계 내화도료용 결합제 조성물을 제공하는 데 있다.The present invention has been made to solve the problems described above, the purpose of the inorganic refractory paints that can be used for a long time because the low price and low reactivity with Al 2 O 3 -SiO 2 based refractory at high temperature of 1300 ℃ or more It is to provide a binder composition.
상기의 목적을 달성하기 위해 본 발명에서는, 물과 충전제로 이루어진 무기계 내화도료 제조시 사용되는 결합제 조성물로서, SiO2와 Al2O3의 함량비인 SiO2:Al2O3가 3 ~ 4 이고, Na2O 함량 및 K2O의 함량의 합인 (Na2O + K2O)이 SiO2함량과 Al2O3함량의 합인 (SiO2+ Al2O3)에 대해 5 ~ 15 인 점토계 무기화합물을 사용하며, 무기계 내화도료 제조시 외삽으로 충전제의 함량에 대하여 0.5 ~ 2 중량% 첨가한다.According to the present invention for achieving the above object, as the binder composition used in the manufacture of inorganic fire-resistant coating material consisting of water and a filler, the content of SiO 2 and Al 2 O 3 ratio SiO 2: and the Al 2 O 3 is 3-4, Na in 2 O content and the content of K 2 O sum (Na 2 O + K 2 O) is a clay 5-15 for the SiO 2 sum of the content and the Al 2 O 3 content (SiO 2 + Al 2 O 3) based Inorganic compounds are used, and when preparing the inorganic refractory paint, it is added by extrapolation 0.5 to 2 wt% based on the content of the filler.
이하, 본 발명에 대해 상세히 설명한다.Hereinafter, the present invention will be described in detail.
본 발명에 따른 무기계 내화도료용 결합제 조성물은, 무기계 내화도료 제조시 물 40 내지 60 중량%, 잔부가 충전제인 조성에, 외삽으로 충전제의 함량에 대하여 0.5 ~ 2 중량% 첨가하는 것으로서, 주성분이 SiO2와 Al2O3인 점토계 무기화합물이다.The binder composition for the inorganic refractory coating according to the present invention is added to the composition of 40 to 60% by weight of water and the balance of the filler when the inorganic refractory paint is prepared, with the addition of 0.5 to 2% by weight relative to the content of the filler, the main component is SiO 2 and Al 2 O 3 is a clay-based inorganic compound.
주성분이 SiO2와 Al2O3인 점토계 무기화합물은 (AlmMgn)SixOy(OH)4XzwH2O으로 표현되며, 이 때 X는 층간에 존재하는 양이온이다. 점토계 무기화합물은카올린(Kaolin)족, 벤토나이트(Bentonite)족, 몬모릴로나이트(Montmorillonite)족, 일마이트(Illite)족, 스메타이트(Smetite)족 등에 속하는 광물로서, Si-4면체 층과 Al-8면체 층이 서로 이어진 결정구조를 갖는 미세입자의 집합체이다. 층간에 존재하는 양이온의 종류로는 Ca2+, Mg2+, Na+, H+, K+등을 들 수 있으며, 2가의 양이온은 1가의 양이온에 비해 4면체 실리케이트층과 결합력이 강하여 이온 교환능이 작고 따라서 물과 접촉 시 팽윤도가 낮게 발휘된다.Clay-based inorganic compounds whose main components are SiO 2 and Al 2 O 3 are represented by (Al m Mg n ) Si x O y (OH) 4 X z wH 2 O, where X is a cation present between the layers. The clay-based inorganic compound is a mineral belonging to the Kaolin group, the Bentonite group, the Montmorillonite group, the Illite group, the Smetite group, and the like. A hexahedral layer is an aggregate of fine particles having a crystal structure connected to each other. Kinds of cations present between the layers include Ca 2+ , Mg 2+ , Na + , H + , K +, etc. The divalent cations have a stronger bond strength with the tetrahedral silicate layer than the monovalent cations and thus have ion exchange capacity. It is small and therefore exhibits a low degree of swelling upon contact with water.
예를 들면, 나트륨계 벤토나이트는 팽윤성(swelling)이 양호하며 물의 흡수 시 겔(gel) 생성력이 우수한 분산형 점토(Dispersed clay)이며, 칼슘계 벤토나이트는 팽윤성과 겔 생성력이 저조한 응집형 점토(Aggregated clay)이다.For example, sodium-based bentonite is a dispersed clay having good swelling ability and a good gel formation ability when water is absorbed. )to be.
팽윤성은 점토계 무기화합물의 물리,화학적 특성 중 가장 독특한 성질로서, 물과 같은 용매와 접촉하면 결정 층간에 물 또는 용매가 침입하여 층간 거리가 멀어지게 되고 최종적으로 강고한 결합력이 발현되는 겔 상을 형성하는 부피팽창 현상이다.Swelling is the most unique property of the physical and chemical properties of clay-based inorganic compounds.When swelling is in contact with a solvent, such as water, water or solvent invades between crystal layers, increasing the distance between layers and finally forming a gel phase in which strong bonding force is expressed. It is a volume expansion phenomenon to form.
칼슘계 벤토나이트에서는 칼슘이온이 실리케이트층에서 물 분자 층과 강하게 결합되어 팽윤성이 낮은데, 이는 칼슘이 수화 될 때 이루는 전기이중층(diffuse double layer)이 나트륨이온에 비해 좁기 때문에 인접하는 입자와의 거리가 짧아 인력이 서로 크게 작용하기 때문이다.In calcium-based bentonite, calcium ions are strongly bonded to the water molecule layer in the silicate layer, resulting in low swelling properties.The distance between adjacent particles is shorter because the diffuse double layer formed when calcium is hydrated is narrower than sodium ions. This is because the attraction forces act greatly on each other.
점토계 무기화합물의 열간 특성 변화는 구조 중 OH기의 탈수양상과 층간에 존재하는 양이온의 종류 및 함량에 의존하는 것으로 알려져 있다. 점토계 무기화합물은 상온~300?에서 2가의 교환성 양이온과 결합된 물 분자의 탈수에 의한 중합과정에 의해 결합력을 부여하고, 900? 이상의 고온에서는 내화도가 높은 무라이트(mullite)(3Al2O3.2SiO2)와 크리스토발라이트(cristoballite)(SiO2)로 대부분 전이함으로써 강고한 결합력을 발현한다.The change in hot properties of clay-based inorganic compounds is known to depend on the dehydration phase of the OH group and the type and content of cations present between the layers. Clay-based inorganic compounds impart bonding strength by polymerization by dehydration of water molecules bound to divalent exchange cations at room temperature ~ 300 ° C, and 900 ° C. In the above high temperature, most of them are transferred to mullite (3Al 2 O 3 .2SiO 2 ) and cristoballite (SiO 2 ), which have a high degree of fire resistance, thereby expressing a strong binding force.
본 발명에서 사용되는 점토계 무기화합물에서는 SiO2와 Al2O3의 함량비인 SiO2:Al2O3가 3 ~ 4 이고, Na2O 함량 및 K2O의 함량의 합인 (Na2O + K2O)이 SiO2함량과 Al2O3함량의 합인 (SiO2+ Al2O3)에 대해 5 ~ 15 이다.In clay-based inorganic compound used in the present invention, the content of SiO 2 and Al 2 O 3 ratio SiO 2: Al 2 O 3 is 3 or 4 and, Na 2 O the sum of the content of the content, and K 2 O (Na 2 O + K 2 O) is 5 to 15 for (SiO 2 + Al 2 O 3 ), which is the sum of the SiO 2 content and the Al 2 O 3 content.
여기서, SiO2:Al2O3가 3 보다 작거나 4 보다 크면 저온에서 물 분자의 탈수에 의한 중합반응에서 생성된 중합체의 망목구조(network, bridging) 형성이 적어 도막의 기계적 강도가 낮다. 또한 망목구조가 엉성하게 형성되면 비중이 높은 무기 충전제의 침강이 용이해지므로 도료의 저장 안정성이 낮아져서 바람직하지 않다.Here, when SiO 2 : Al 2 O 3 is less than 3 or greater than 4, the mechanical strength of the coating film is low due to the small formation of network (bridging) of the polymer produced in the polymerization reaction by dehydration of water molecules at low temperature. In addition, when the mesh structure is formed in a loose shape, the sedimentation of the inorganic filler having a high specific gravity is facilitated, so that the storage stability of the paint is low, which is not preferable.
또한, 층상 이온을 제공하는 알칼리 산화물인 Na2O와 K2O의 함량 합 (Na2O + K2O)이 (SiO2+ Al2O3)에 대해 5 중량% 보다 작으면 팽윤성이 낮아 무기 충전제의 침강이 용이해지고, 15 중량% 보다 크면 팽윤성이 지나치게 커서 도료의 점도가 높아지는데, 이 경우 도료의 작업성이 저하되므로 바람직 하지 않다.In addition, when the sum of the contents of Na 2 O and K 2 O (Na 2 O + K 2 O), which is an alkali oxide providing layered ions, is less than 5% by weight relative to (SiO 2 + Al 2 O 3 ), the swelling property is low. Sedimentation of the inorganic filler becomes easy, and when it is larger than 15% by weight, the swelling property is too large and the viscosity of the paint is high. In this case, the workability of the paint is lowered, which is not preferable.
이러한 점토계 무기화합물을 외삽으로 무기 충전제의 함량에 대하여 0.5 중량% 보다 적게 첨가하면 팽윤성이 낮고, 2 중량% 보다 많게 첨가하면 팽윤성이 지나치게 커서 바람직하지 않다.When the clay-based inorganic compound is extrapolated to less than 0.5 wt% based on the content of the inorganic filler, the swelling property is low, and when it is added more than 2 wt%, the swelling property is too large, which is not preferable.
이하, 본 발명의 이해를 돕기 위하여 바람직한 실시예를 제시한다, 그러나, 하기의 실시예는 본 발명의 이해를 돕기 위하여 제시되는 것일 뿐 본 발명이 하기하는 실시예에 한정되는 것은 아니다.Hereinafter, preferred examples are provided to help understanding of the present invention. However, the following examples are provided only to aid the understanding of the present invention, and the present invention is not limited to the following examples.
실시예 1 및 2Examples 1 and 2
실시예 1 및 2에서는 무기 충전제 55 중량%와 물 45 중량%에, 표 1에 나타낸 조건의 점토계 무기화합물을 혼합하여 무기계 내화도료를 제조하였다. 점토계 무기화합물을 물에 첨가한 후 3500 rpm으로 30 분간 고속 혼합하여 충분히 분산시킨 다음, 충전제를 첨가하여 30 분간 2차 혼합하였다. 실험에 사용한 점토계 무기화합물로는 시판되고 있는 시약급의 제품들을 이용하였으며, 무기 충전제로는 평균입경이 30 ㎛인 크롬광(chrome ore)을 사용하였다. 크롬광은 열복사율이 우수하여 공업용 요로의 열효율을 향상시키는 특성을 가지고 있다.In Examples 1 and 2, clay-based inorganic compounds under the conditions shown in Table 1 were mixed with 55 wt% of the inorganic filler and 45 wt% of water to prepare an inorganic refractory coating. The clay-based inorganic compound was added to water, followed by high speed mixing at 3500 rpm for 30 minutes to sufficiently disperse the mixture, followed by secondary mixing for 30 minutes by adding a filler. Commercially available reagent grade products were used for the clay-based inorganic compounds used in the experiment, and chrome ore having an average particle diameter of 30 μm was used as the inorganic filler. Chromium ore has excellent heat radiation rate and has the characteristic of improving the thermal efficiency of an industrial urinary tract.
브룩필드(Brookfield) 사제 점도계(viscometer)를 이용하여 제조한 무기계 도료의 점도를 측정하였으며, 도료를 스프레이건(spray gun)을 이용하여 Al2O3계 내화물 표면에 도포한 후 도막의 거칠기, 평활도 등을 관찰하여 도료의 작업성을 평가하였다.Viscosity of the inorganic paint prepared by using a Brookfield (viscometer) was measured, and after coating the paint on the Al 2 O 3 system refractory surface using a spray gun (coarse, smoothness) The workability of the paint was evaluated by observing the back.
무기계 도료를 눈금이 매겨진 실린더에 넣고 장시간 유지하면서 유지시간별로 필러(filler) 등이 침강된 높이를 측정하였으며, 기준시편의 침강높이에 대한 백분율로 각각의 도료에 대한 침강지수를 구하였다.Inorganic paint was placed in a graduated cylinder and the filler was settled for each holding time, and the sedimentation index for each paint was calculated as a percentage of the sedimentation height of the reference specimen.
또한 경면으로 연마한 Al2O3계 기판 위에 제조한 도료를 도포하여 110℃에서12시간 건조한 다음, 연필 경도법으로 각각의 경도를 측정하였으며, 기준시편의 측정값에 대한 백분율로 각각의 경도를 표시한 것을 강도지수로 나타내었다.In addition, the coating material prepared on the mirror-polished Al 2 O 3 -based substrate was applied and dried at 110 ° C. for 12 hours, and then each hardness was measured by the pencil hardness method, and each hardness was measured as a percentage of the measured value of the reference specimen. The indication was expressed by the intensity index.
상기한 바와 같은 시험 결과, 강도지수, 점도, 작업성, 및 침강지수 결과를 표 1에 나타내었다.The test results as described above, the strength index, viscosity, workability, and sedimentation index results are shown in Table 1.
또한, 비교예 1 내지 7에서는, 표 1에 나타낸 바와 같이 본 발명의 범위를 벗어난 조건으로 내화도료를 제조하고, 실시예와 동일한 방법으로 도료의 강도지수, 점도, 작업성, 침강지수를 측정한 후 그 결과를 표 1에 함께 나타내었다.In addition, in Comparative Examples 1 to 7, as shown in Table 1, a refractory paint was prepared under conditions outside the scope of the present invention, and the strength index, viscosity, workability, and sedimentation index of the paint were measured in the same manner as in Example. The results are shown in Table 1 together.
실시예 및 비교예에서 강도지수 및 침강지수 측정시 사용된 기준시편은 비교예 1의 시편이다.In the Examples and Comparative Examples, the reference specimens used when measuring the strength index and the sedimentation index are the specimens of Comparative Example 1.
표 1에 나타난 바와 같이, 본 발명의 실시예 1 및 2에서는 작업성과 침강 안정성이 양호하고 도료의 기계적 내구성이 우수함을 알 수 있었다. 또한, 알칼리 규산염계 결합제를 사용하는 기존 도료의 경우 알칼리 성분의 함량이 수 중량%인데 비하여 본 발명의 무기계 결합제에서는 0.5 중량% 미만으로 낮기 때문에 Al2O3-SiO2계 내화물과 반응시 저융점 화합물의 생성이 적으므로 고온 안정성도 우수할 것으로 예상된다.As shown in Table 1, in Examples 1 and 2 of the present invention it was found that the workability and sedimentation stability is good and the mechanical durability of the paint is excellent. In addition, the conventional coating material using an alkali silicate-based binder has a low melting point when reacted with an Al 2 O 3 -SiO 2 -based refractory because the content of the alkali component is lower than 0.5 wt% in the inorganic binder of the present invention, while the content of the alkaline component is several wt%. It is expected that the high temperature stability is also excellent because of the low production of the compound.
반면에, 비교예 1 내지 6에서는 도료의 작업성, 점도, 침강 안정성, 도료의 기게적 내구성 등이 낮거나 나쁜 결과를 보였다.On the other hand, in Comparative Examples 1 to 6, the workability, viscosity, sedimentation stability, mechanical durability of the paint and the like showed low or bad results.
상기한 바와 같이, 본 발명에서는 무기계 내화도료의 결합제로서 저가의 점토계 무기화합물을 사용하기 때문에 제조단가가 저렴하여 종래에 비해 비용이 절감되는 효과가 있다.As described above, in the present invention, since a low-cost clay-based inorganic compound is used as the binder of the inorganic refractory paint, the manufacturing cost is low and the cost is reduced compared to the conventional art.
또한, 본 발명에 따른 무기계 내화도료의 결합제에는 알칼리 성분의 함량이 매우 낮아 1300℃ 이상의 고온 조업 시에도 Al2O3-SiO2계 내화물과 반응하여 저융점 화합물의 생성이 적으므로 내장 내화물의 장시간 사용이 가능해지는 효과가 있다.In addition, the binder of the inorganic refractory paint according to the present invention has a very low content of alkali component, and reacts with Al 2 O 3 -SiO 2 -based refractory materials even at high temperatures of 1300 ° C. or less, so that low melting point compounds are produced. There is an effect that can be used.
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| KR102602849B1 (en) * | 2022-11-22 | 2023-11-17 | 한국건설기술연구원 | Fire-Retardant Paint Composition, Extruded Cement Panel coated with such Paint Composition, and Method for Enhancement of Fire-Retardant Performance of Extruded Cement Panel using such Paint Composition |
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| KR890005484A (en) * | 1987-09-17 | 1989-05-15 | 최익수(대행) | Corrosion-resistant modular coated heat exchanger with acid-resistant coating |
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| KR19980047209A (en) * | 1996-12-14 | 1998-09-15 | 김종진 | Anti-expandable coating agent for oxidation and coating method using the same |
| KR19990045878A (en) * | 1999-02-04 | 1999-06-25 | 김창호 | A composite of coating material and the manufacturing method thereof and the coating material and the method for coating the internal wall of a converter using the coating material |
| KR20000067313A (en) * | 1999-04-27 | 2000-11-15 | 이학재 | An aqueous inorganic binder comprising liquid silicate, and a paint composition using the same |
| KR100307190B1 (en) * | 1998-07-31 | 2001-12-28 | 김정하 | Inorganic paint composition and its manufacturing method and use |
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| KR890005484A (en) * | 1987-09-17 | 1989-05-15 | 최익수(대행) | Corrosion-resistant modular coated heat exchanger with acid-resistant coating |
| JPH1025431A (en) * | 1996-07-11 | 1998-01-27 | Kawaken Fine Chem Co Ltd | Binder composition for inorganic coating and inorganic coating composition |
| KR19980047209A (en) * | 1996-12-14 | 1998-09-15 | 김종진 | Anti-expandable coating agent for oxidation and coating method using the same |
| KR100307190B1 (en) * | 1998-07-31 | 2001-12-28 | 김정하 | Inorganic paint composition and its manufacturing method and use |
| KR19990045878A (en) * | 1999-02-04 | 1999-06-25 | 김창호 | A composite of coating material and the manufacturing method thereof and the coating material and the method for coating the internal wall of a converter using the coating material |
| KR20000067313A (en) * | 1999-04-27 | 2000-11-15 | 이학재 | An aqueous inorganic binder comprising liquid silicate, and a paint composition using the same |
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| KR102602849B1 (en) * | 2022-11-22 | 2023-11-17 | 한국건설기술연구원 | Fire-Retardant Paint Composition, Extruded Cement Panel coated with such Paint Composition, and Method for Enhancement of Fire-Retardant Performance of Extruded Cement Panel using such Paint Composition |
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