KR20040021246A - Inorganic coating composition superior good heat emissivity and adhesion - Google Patents
Inorganic coating composition superior good heat emissivity and adhesion Download PDFInfo
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- KR20040021246A KR20040021246A KR1020020052842A KR20020052842A KR20040021246A KR 20040021246 A KR20040021246 A KR 20040021246A KR 1020020052842 A KR1020020052842 A KR 1020020052842A KR 20020052842 A KR20020052842 A KR 20020052842A KR 20040021246 A KR20040021246 A KR 20040021246A
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- inorganic
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- coating composition
- inorganic coating
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- 239000008199 coating composition Substances 0.000 title claims description 17
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 150000001875 compounds Chemical class 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000004927 clay Substances 0.000 claims abstract description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 13
- 229910052804 chromium Inorganic materials 0.000 claims description 12
- 239000011651 chromium Substances 0.000 claims description 12
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 9
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 239000003973 paint Substances 0.000 abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 230000005855 radiation Effects 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 16
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 13
- 229910010271 silicon carbide Inorganic materials 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 230000002485 urinary effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 230000002688 persistence Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 210000001635 urinary tract Anatomy 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
Description
본 발명은 열복사율 및 부착성이 우수한 무기도료 조성물에 관한 것으로, 더욱 상세하게는 화로내벽면에 대한 부착성이 우수하여 장기간 사용할 수 있을 뿐만 아니라, 동시에 열복사율이 매우 우수하여 각종 공업용 요로의 열효율을 향상시킬 수 있는 무기도료 조성물에 관한 것이다.The present invention relates to an inorganic coating composition having excellent heat radiation rate and adhesion property, and more particularly, excellent adhesion to the inner wall of the furnace, which can be used for a long time, and at the same time, excellent heat radiation rate, and thus thermal efficiency of various industrial urinary furnaces. It relates to an inorganic coating composition capable of improving.
고온으로 조업되는 공업용 요로에서 열효율을 높이기 위하여 화로내벽면에 열복사율이 높은 무기도료를 도포하는 방법이 주로 사용되고 있다.In order to increase thermal efficiency in industrial furnaces operated at high temperatures, a method of applying inorganic paint having high heat radiation rate to the inner wall of the furnace is mainly used.
종래에는 열복사율이 높은 200 메쉬(mesh) 이하의 SiC(silicon carbide) 분말을 결합재 및 첨가제와 혼합한 도료를 사용하여 화로내벽면의 열복사율을 증대시킴으로써 화로의 승온시간을 단축하고, 피가열물에 대한 열복사 열량의 증가시키는 등 화로에 사용되는 연료의 원단위를 2~20 % 절감할 수 있다고 보고된 바 있다.Conventionally, the heat radiation rate of the furnace inner wall surface is increased by using a coating material in which SiC (silicon carbide) powder having a high thermal radiation rate of 200 mesh or less is mixed with a binder and an additive, thereby shortening the temperature raising time of the furnace, and being heated. It has been reported that the raw units of the fuel used in the furnace can be reduced by 2 to 20%, such as increasing the heat radiation to the furnace.
한편, 일본공개특허공보 평3-229829호는 크롬광을 주성분으로 한 내화도료를 냉각압연강판용 가열로의 화로내벽면에 도포하여 연료 원단위를 3 % 절감할 수 있음이 개시되어 있다. 또한, 일본공개특허공보 평10-274482호는 크롬광을 포함한내화도료를 가열로의 전부위가 아닌 피가열물의 장입구에서 최인접한 가열대에만 1~2 ㎜의 두께로 도포함으로써 경제적인 비용으로 가열로의 열효율을 향상시킬 수 있음이 개시되어 있다.On the other hand, Japanese Patent Application Laid-Open No. 3-229829 discloses that a refractory paint mainly composed of chromium ore can be applied to the furnace inner wall of a heating furnace for a cold rolled steel sheet to save 3% of the raw fuel unit. In addition, Japanese Patent Application Laid-open No. Hei 10-274482 heats economically by applying a refractory paint containing chromium ore with a thickness of 1 to 2 mm only to the heating stand closest to the charging opening of the object to be heated, not at the top of the heating furnace. It is disclosed that the thermal efficiency of the furnace can be improved.
그러나, 열복사율이 0.9~0.95 정도로 매우 높은 SiC의 경우 고온에서 불안정한 상태로 존재하여 산화분위기와 반응함으로써 산화되면서 팽창하여 도포면으로부터 박리되는 문제점이 있으며, 크롬광의 경우는 고온에서는 안정한 상태로 존재하지만 SiC 등에 비해 열복사율이 낮아 고효율의 안정적인 복사 기능을 나타낼 수 없다는 문제점이 있다.However, SiC, which has a very high heat radiation rate of 0.9 to 0.95, is present in an unstable state at a high temperature and swells by being oxidized by reacting with an oxidizing atmosphere to delaminate from the coated surface. In the case of chromium light, SiC is present in a stable state at high temperature. There is a problem in that the thermal radiation rate is low compared to the high efficiency to exhibit a stable radiation function of high efficiency.
따라서, 고온에서 안정한 상태로 존재하여 도포면으로부터 박리되지 않을 뿐만 아니라, 동시에 열복사율이 우수한 무기도료 조성물에 대한 연구가 더욱 필요한 실정이다.Therefore, there is a need for a study on an inorganic coating composition which is present in a stable state at a high temperature and does not peel off from the coated surface, and at the same time has excellent heat radiation rate.
상기와 같은 종래기술의 문제점을 해결하고자, 본 발명은 화로내벽면에 대한 부착성이 우수하여 장기간 사용할 수 있을 뿐만 아니라, 동시에 열복사율이 매우 우수하여 각종 공업용 요로의 열효율을 향상시킬 수 있는 무기도료 조성물을 제공하는 것을 목적으로 한다.In order to solve the problems of the prior art as described above, the present invention is excellent in adhesion to the inner wall of the furnace not only can be used for a long time, but also at the same time very excellent heat radiation rate inorganic paints that can improve the thermal efficiency of various industrial urinary It is an object to provide a composition.
상기 목적을 달성하기 위하여, 본 발명은 열복사율과 부착성이 우수한 무기도료 조성물에 있어서,In order to achieve the above object, the present invention is an inorganic coating composition excellent in heat radiation rate and adhesion,
a) 크롬광 50~65 중량% 및 SiC 분말 35~50 중량%를 함유하는 무기 혼a) inorganic horn containing 50 to 65% by weight of chromium ore and 35 to 50% by weight of SiC powder
합물;Compound;
b) SiO2-Al2O3성분의 점토계 화합물; 및b) clay compounds of the SiO 2 -Al 2 O 3 component; And
c) 수분c) moisture
를 포함하는 무기도료 조성물을 제공한다.It provides an inorganic coating composition comprising a.
이하 본 발명을 상세하게 설명한다.Hereinafter, the present invention will be described in detail.
본 발명자들은 고온에서 안정한 상태로 존재하여 도포면으로부터 박리되지 않으며, 동시에 열복사율이 우수한 무기도료 조성물에 대하여 연구하던 중, 열복사율이 우수한 SiC와 고온 안정성 및 내구성이 우수한 크롬광을 적정하게 혼합한 무기 혼합물을 포함하는 무기도료 조성물을 요로의 내장내화물의 표면에 도포한 결과, 화로내벽면에 대한 부착성이 우수하여 장기간 사용할 수 있을 뿐만 아니라, 동시에 열복사율이 매우 우수하여 각종 공업용 요로의 열효율을 향상시킴을 확인하고, 이를 토대로 본 발명을 완성하게 되었다.The present inventors are present in a stable state at a high temperature and do not peel off from the coated surface, and at the same time, while studying an inorganic coating composition having excellent heat radiation rate, an inorganic material in which SiC excellent in heat radiation rate and chromium light having high temperature stability and durability are appropriately mixed. As a result of applying the inorganic coating composition containing the mixture to the surface of the internal refractories of the urinary tract, the adhesion to the inner wall of the furnace is excellent, which can be used for a long time, and at the same time, the thermal radiation rate is very good to improve the thermal efficiency of various industrial urinary tracts. It was confirmed that, based on this, the present invention was completed.
본 발명의 무기도료 조성물은 크롬광 50~65 중량% 및 SiC 분말 35~50 중량%를 함유하는 무기 혼합물, SiO2-Al2O3성분의 점토계 화합물, 및 수분을 포함하는 것을 특징으로 한다.The inorganic coating composition of the present invention is characterized in that it contains an inorganic mixture containing 50 to 65% by weight of chromium ore and 35 to 50% by weight of SiC powder, a clay-based compound of SiO 2 -Al 2 O 3 component, and water. .
상기 a)의 크롬광 50~65 중량% 및 SiC 분말 35~50 중량%를 함유하는 무기 혼합물은 무기도료 조성물에 40 내지 60 중량%로 포함되는 것이 바람직하다. 상기 무기 혼합물의 함량이 40 중량% 미만일 경우에는 열복사율이 낮아 도료로의 사용상 잇점이 없으며, 60 중량%를 초과할 경우에는 도료의 점도가 너무 높아 시공성이 불량하다는 문제점이 있다.Inorganic mixture containing 50 to 65% by weight of chromium ore and 35 to 50% by weight of SiC powder of a) is preferably included in the inorganic coating composition 40 to 60% by weight. When the content of the inorganic mixture is less than 40% by weight, the thermal radiation rate is low, there is no advantage in use as a paint, when the content exceeds 60% by weight there is a problem that the paintability is too high, poor workability.
상기 무기 혼합물에서 크롬광의 함량이 50 중량% 미만일 경우에는 SiC 분말이 산화에 의한 팽창으로 도포면으로부터 박리 정도가 심하고, 65 중량%를 초과할 경우에는 열복사율이 낮다는 문제점이 있다. 또한 상기 SiC 분말의 함량이 35 중량% 미만일 경우에는 열복사율이 낮아 도료로의 사용상 잇점이 없으며, 65 중량%를 초과할 경우에는 도포면으로부터 박리 정도가 심하여 부착성이 저하되는 문제점이 있다.When the content of the chromium ore in the inorganic mixture is less than 50% by weight, the degree of peeling from the coated surface is severe due to expansion due to oxidation of SiC powder, and the heat radiation rate is low when it exceeds 65% by weight. In addition, when the content of the SiC powder is less than 35% by weight, the thermal radiation rate is low, there is no advantage in use as a paint, and when it exceeds 65% by weight, there is a problem in that the degree of peeling from the coated surface is severe and adhesiveness is lowered.
상기 b)의 SiO2-Al2O3성분의 점토계 화합물은 결합재로 작용하며, 상기 무기도료 조성물에 1 내지 3 중량%로 포함되는 것이 바람직하다. 상기 함량이 1 중량% 미만일 경우에는 무기 혼합물의 침강 억제 효과가 없으며, 3 중량%를 초과할 경우에는 도료의 점도가 너무 높다는 문제점이 있다.The clay-based compound of the SiO 2 -Al 2 O 3 component of b) acts as a binder, it is preferably included in 1 to 3% by weight in the inorganic coating composition. If the content is less than 1% by weight, there is no sedimentation inhibiting effect of the inorganic mixture, and when the content exceeds 3% by weight, there is a problem that the viscosity of the paint is too high.
또한 본 발명의 무기도료 조성물은 상기 a)의 크롬광 50~65 중량% 및 SiC 분말 35~50 중량%를 함유하는 무기 혼합물, 및 b) SiO2-Al2O3성분의 점토계 화합물 이외에 c)의 잔량의 수분을 포함한다.In addition, the inorganic coating composition of the present invention is an inorganic mixture containing 50 to 65% by weight of chromium ore and 35 to 50% by weight of SiC powder of a), and b) a clay compound other than SiO 2 -Al 2 O 3 component c. It contains the residual amount of water).
본 발명의 무기도료 조성물은 화로내벽면에 대한 부착성이 우수하여 장기간 사용할 수 있을 뿐만 아니라, 동시에 열복사율이 매우 우수하여 각종 공업용 요로의 열효율을 향상시킬 수 있으며, 연료원단가 저감에 기여할 수 있는 효과가 있다.The inorganic coating composition of the present invention is excellent in adhesion to the inner wall of the furnace can be used for a long time, and at the same time very excellent heat radiation rate can improve the thermal efficiency of various industrial urinary, and contribute to the reduction of fuel cost There is.
이하, 본 발명의 이해를 돕기 위하여 바람직한 실시예를 제시하나, 하기 실시예는 본 발명을 예시하는 것일 뿐 본 발명의 범위가 하기 실시예에 한정되는 것은 아니다.Hereinafter, preferred examples are provided to help understanding of the present invention, but the following examples are merely to illustrate the present invention, and the scope of the present invention is not limited to the following examples.
[실시예]EXAMPLE
실시예 1Example 1
크롬광(chromite)과 SiC 분말에서 크롬광의 함유량이 55 중량%의 비율로 섞은 무기 혼합물 55 중량%, SiO2-Al2O3성분의 점토계 화합물을 1.2 중량%, 잔량의 수분을 혼합하여 무기도료를 제조하였다.Inorganic mixture was mixed 55% by weight of inorganic mixture containing chromite and 55% by weight of chromite in SiC powder, 1.2% by weight of SiO 2 -Al 2 O 3 component clay compound, and remaining water The paint was prepared.
실시예 2~3, 및 비교예 1~6Examples 2-3 and Comparative Examples 1-6
상기 실시예 1에서 하기 표 1과 같은 성분으로 혼합한 것을 제외하고는 상기 실시예 1과 동일한 방법으로 실시하여 무기도료를 제조하였다. 하기 표 1의 단위는 중량%이다.Except for mixing with the components shown in Table 1 in Example 1 was carried out in the same manner as in Example 1 to prepare an inorganic coating. The unit in Table 1 below is weight percent.
실험예Experimental Example
상기 실시예 1 내지 3, 및 비교예 1 내지 6에서 제조한 무기도료를 스프레이 건(spray gun)을 이용하여 각각 SiO2-Al2O3계 내화물 표면에 도포하여 시편을 준비하였다. 상기 시편을 1,000~1,300 ℃로 유지된 전기로에 시편을 장입한 후, 30 분 동안 유지시킨 다음 꺼내어 공냉하는 과정을 반복하였다.The inorganic paints prepared in Examples 1 to 3 and Comparative Examples 1 to 6 were applied to the surface of SiO 2 -Al 2 O 3 based refractory using a spray gun to prepare a specimen. After loading the specimen into the electric furnace maintained at 1,000 ~ 1,300 ℃, it was maintained for 30 minutes and then taken out and air-cooled was repeated.
상기의 과정을 거진 무기도료의 부착 잔존율, 작업성, 및 열효율 지수를 하기와 같은 방법으로 측정하고, 그 결과를 하기 표 2에 나타내었다.The adhesion persistence, workability, and thermal efficiency index of the inorganic coating based on the above procedure were measured by the following method, and the results are shown in Table 2 below.
ㄱ) 부착 잔존율 - 열충격시험 전후의 내화도료의 탈락된 부위의 면A) the adhesion remaining rate-the surface of the dropped part of the refractory paint before and after the thermal shock test;
적을 계산하여 평가하였다.The enemy was calculated and evaluated.
ㄴ) 작업성 - 스프레이 건을 사용한 시공의 가능성 여부, 그리고 혼B) workability-the possibility of installation with a spray gun, and the horn;
련물의 점도를 측정하여 평가하였다.The viscosity of the lotus was measured and evaluated.
ㄷ) 열효율 지수 - 공업용 전기로의 내벽면에 도료를 도포한 다음,C) Thermal efficiency index-After coating the inner wall surface of industrial electric furnace,
1,300 ℃까지 승온시 소요되는 전력량을 측정하여 비교하였다.The amount of power required to increase the temperature to 1,300 ℃ was measured and compared.
이때, 비교예 1의 도료 적용시 측정된 전력량을 기준으로 하여At this time, based on the amount of power measured when applying the paint of Comparative Example 1
측정값을 환산하였다.The measured value was converted.
상기 표 2를 통하여, 본 발명에 따라 크롬광 50~65 중량% 및 SiC 분말 35~50 중량%를 함유하는 무기 혼합물, 및 SiO2-Al2O3성분의 점토계 화합물, 및 수분을 포함하는 실시예 1 내지 3의 무기도료의 부착잔존율, 작업성, 및 열효율 지수가 비교예 1 내지 6의 무기도료와 비교하여 우수함을 확인할 수 있었다.Through the above Table 2, according to the present invention, an inorganic mixture containing 50 to 65% by weight of chromium ore and 35 to 50% by weight of SiC powder, and a clay-based compound of SiO 2 -Al 2 O 3 component, and water It was confirmed that the adhesion persistence, workability, and thermal efficiency index of the inorganic paints of Examples 1 to 3 were superior to those of the inorganic paints of Comparative Examples 1 to 6.
본 발명의 무기도료 조성물은 화로내벽면에 대한 부착성이 우수하여 장기간 사용할 수 있을 뿐만 아니라, 동시에 열복사율이 매우 우수하여 각종 공업용 요로의 열효율을 향상시킬 수 있으며, 연료원단가 저감에 기여할 수 있는 효과가 있다.The inorganic coating composition of the present invention is excellent in adhesion to the inner wall of the furnace can be used for a long time, and at the same time very excellent heat radiation rate can improve the thermal efficiency of various industrial urinary, and contribute to the reduction of fuel cost There is.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020020052842A KR20040021246A (en) | 2002-09-03 | 2002-09-03 | Inorganic coating composition superior good heat emissivity and adhesion |
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| KR1020020052842A KR20040021246A (en) | 2002-09-03 | 2002-09-03 | Inorganic coating composition superior good heat emissivity and adhesion |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100526835B1 (en) * | 2002-10-25 | 2005-11-08 | 강동선 | Heat-emissive paint for the inner surfaces of industrial furnaces |
| KR100953832B1 (en) * | 2008-04-25 | 2010-04-20 | 장동주 | Aqueous ceramic paint composition with excellent heat shielding and durability |
| KR100953829B1 (en) * | 2008-04-25 | 2010-04-20 | 장동주 | Water-based ceramic coating composition with excellent high temperature bonding |
-
2002
- 2002-09-03 KR KR1020020052842A patent/KR20040021246A/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100526835B1 (en) * | 2002-10-25 | 2005-11-08 | 강동선 | Heat-emissive paint for the inner surfaces of industrial furnaces |
| KR100953832B1 (en) * | 2008-04-25 | 2010-04-20 | 장동주 | Aqueous ceramic paint composition with excellent heat shielding and durability |
| KR100953829B1 (en) * | 2008-04-25 | 2010-04-20 | 장동주 | Water-based ceramic coating composition with excellent high temperature bonding |
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