KR19980026989A - How to coat ceramic on the surface of aluminum plate - Google Patents
How to coat ceramic on the surface of aluminum plate Download PDFInfo
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- KR19980026989A KR19980026989A KR1019960045613A KR19960045613A KR19980026989A KR 19980026989 A KR19980026989 A KR 19980026989A KR 1019960045613 A KR1019960045613 A KR 1019960045613A KR 19960045613 A KR19960045613 A KR 19960045613A KR 19980026989 A KR19980026989 A KR 19980026989A
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Abstract
본 발명은 건축내외장재로 사용되는 알루미늄판의 표면에 세라믹을 코팅하는 방법에 관한 것이다. 액화세라믹에 안료와 희석제를 혼합하여 흔들고 안정시키는 것을 반복한 다음, 따뜻한 온도에서 숙성을 시키고, 이를 교반기로 회전시켜 교반을 한다. 알루미늄판은 표면을 센딩한 다음, 냉수, 온수 및 에어로 각각 세척을 한다. 알루미늄판이 따뜻한 상태에서 위와같이 교반을 한 다음 세라믹을 분사하여 코팅한 다음 건조로에서 건조시키는 것을 2회 반복한 다음 자연상태에서 건조시킨다.The present invention relates to a method of coating a ceramic on the surface of the aluminum plate used as interior and exterior building materials. The liquid ceramic is mixed with a pigment and a diluent, shaken and stabilized, and then aged at a warm temperature, which is stirred by rotating with a stirrer. The aluminum plates are then sent to the surface and washed with cold water, hot water and air, respectively. After the aluminum plate is agitated as above in a warm state, the ceramic is sprayed and coated, and then dried in a drying furnace twice, and then dried in a natural state.
Description
본 발명은 건축내외장재로 사용되는 알루미늄판의 표면에 세라믹을 코팅하는 방법에 관한 것이다.The present invention relates to a method of coating a ceramic on the surface of the aluminum plate used as interior and exterior building materials.
종래의 건축내외장재로 사용되는 알루미늄판은 그 표면에 유기도료를 도장한 것으로서, 온도변화 및 공해에 약하고 때가 묻을 경우 세척이 잘 안되는 문제점이 있었다.Aluminum plate used as a conventional interior and exterior building material is coated with an organic paint on the surface, there is a problem that is not easy to wash when the temperature change and pollution and stains.
세라믹의 경우 유기도장에 비하여 표면에 때가 잘 묻지 않고 때가 묻은 경우에도 쉽게 세척이 되므로 건축내외장재로 사용되는 알루미늄판에 세라믹을 코팅할 경우 건물의 내부와 외부를 깨끗한 상태로 유지할 수 있고 세척이 용이한 이점이 있다.Compared with organic coatings, ceramics are not easily stained on the surface and are easily cleaned even when stained. Therefore, when ceramics are coated on aluminum plates used as interior and exterior materials for building, the interior and exterior of buildings can be kept clean and easy to clean. There is an advantage.
그러나 세라믹은 유기도료와는 달리 접착력이 약하므로 세라믹을 희석하여 알루미늄판의 표면에 그냥 분사할 경우 코팅이 잘 되지 않는 문제점이 있다.However, since ceramics have weak adhesive strength unlike organic paints, there is a problem in that coating is not performed well when the ceramic is diluted and sprayed onto the surface of the aluminum plate.
따라서 알루미늄판의 표면에 세라믹의 접착력을 높일 수 있는 방법의 개발이 요구되었다.Therefore, the development of a method for increasing the adhesive strength of the ceramic on the surface of the aluminum plate was required.
본 발명자는 이상의 문제점을 해결하기 위하여 광범위하게 연구한 결과, 세라믹은 이를 희석하여 숙성과 교반을 하고, 알루미늄판은 센딩을 한 다음 냉수, 온수, 에어로 각각 세척을 함으로써 위와 같은 문제점을 해결하였다.As a result of extensive research in order to solve the above problems, the ceramics have solved the above problems by diluting the ceramics, ripening and stirring the aluminum plates, and then washing them with cold water, hot water, and air.
또한, 숙성, 교반된 세라믹을 세척된 알루미늄판의 표면에 코팅을 할 경우에는 알루미늄판이 따뜻한 상태에서 코팅을 하고, 코팅후에는 건조로를 이용하여 건조를 함으로써 세라믹의 접착력을 더욱 높일 수 있도록 하였다.In addition, when coating the surface of the washed aluminum plate of the aged and stirred ceramic, the aluminum plate is coated in a warm state, and after the coating is dried using a drying furnace to further increase the adhesive strength of the ceramic.
제1도는 알루미늄판에 세라믹을 코팅하는 공정을 나타내는 블럭도이다.1 is a block diagram showing a process of coating a ceramic on an aluminum plate.
이하 본 발명의 방법을 공정별로 상세히 기술한다.Hereinafter, the method of the present invention will be described in detail for each process.
세라믹을 교반, 숙성하는 공정 : 액화세라믹과 안료와 희석제를 혼합하여 5분 이상 흔들고 5분 이상 안정시키는 것을 5회 이상 반복하고, 이를 30±5℃에서 30시간 이상 숙성시키고, 이를 교반기를 이용하여 1,000±2000RPM으로 회전시켜 10분 이상 교반시킨다.Process of stirring and aging ceramics: Mixing liquefied ceramics, pigment and diluent, shaking for at least 5 minutes and stabilizing at least 5 minutes is repeated 5 times or more, and aged at 30 ± 5 ℃ for 30 hours or more, using a stirrer Rotate to 1,000 ± 2000 RPM and stir for at least 10 minutes.
알루미늄판의 표면을 세척하는 공정 : 알루미늄판의 표면을 샌딩한 다음, 이를 이동시키면서 샤워기를 이용하여 상온의 물로 2분 이상 세척하고, 90±5℃의 물로 다시 2분 이상 동일한 방법으로 세척한 다음, 에어로 강하게 2분 이상 세척한다.Process of washing the surface of the aluminum plate: After sanding the surface of the aluminum plate, while moving it, using a shower while washing with water at room temperature for 2 minutes or more, and again with water of 90 ± 5 ℃ in the same way for more than 2 minutes Wash thoroughly with air for at least 2 minutes.
알루미늄판의 표면을 샌딩하는 것은 코팅시에 세라믹의 점착도를 높이기 위한 것이다. 처음에 상온의 물로 세척하는 것은 샌딩가루를 제거하기 위한 것이고, 온수로 세척하는 것은 샌딩가루 이외의 기름때를 제거하기 위한 것으로 코팅시에 알루미늄판의 온도를 적정 온도가 되도록 하기 위한 목적도 있다. 에어 세척은 물기를 빨리 제거하고 오물을 완전하게 제거하기 위한 것이다.Sanding the surface of the aluminum plate is intended to increase the adhesion of the ceramic during coating. Initially, washing with room temperature water is for removing sanding powder, and washing with hot water is for removing grease other than sanding powder, and there is also a purpose to make the temperature of the aluminum plate at an appropriate temperature during coating. Air wash is to remove moisture quickly and remove dirt completely.
알루미늄판에 세라믹을 코팅하는 공정 : 세척이 끝난 알루미늄판의 온도가 40±10℃ 되었을 때 알루미늄판의 표면에 숙성, 교반된 세라믹액을 분사하여 10±5μ 두께로 코팅을 한 다음, 90±30℃이 건조로를 15±5분간 통과하면서 건조시키고, 건조된 알루미늄판의 온도가 50±10℃가 되었을 때 20±15μ의 두께로 2차로 세라믹을 코팅을 한 다음, 150±50℃의 건조로를 30±5분간 통과하면서 건조시킨 후, 상온에서 자연건조시킨다.Process of coating ceramic on aluminum plate: When the temperature of the cleaned aluminum plate is 40 ± 10 ℃, apply the aged and stirred ceramic liquid to the surface of aluminum plate and apply coating to 10 ± 5μ thickness, then 90 ± 30 After drying the furnace for 15 ± 5 minutes, and drying the aluminum plate at 50 ± 10 ℃, apply a ceramic coating to a thickness of 20 ± 15μ and then dry the furnace at 150 ± 50 ℃. After drying for 5 minutes, air dry at room temperature.
건조로는 원적외선 건조로를 사용할 경우 열이 내부로 침투되어 내부에서 골고루 소성이 되기는 하나, 원적외선 건조로는 일반 건조로에 비하여 가격이 비싸므로 일반 건조로를 사용하는 것이 무난하다.When using a far-infrared drying furnace, heat penetrates into the inside and is evenly calcined inside, but a far-infrared drying furnace is more expensive than a general drying furnace.
코팅된 알루미늄판을 갑자기 높은 온도에서 건조시키거나 갑자기 낮은 온도로 냉각시키면 세라믹과 알루미늄의 열팽창계수의 차이로 인하여 세라믹도장 부분에 균열이 생긴다. 본 발명에서는 건조로의 가운데 부분만 발열시킴으로써 그 열기가 건조로의 입구와 출구에까지 미쳐서 알루미늄판은 낮은 온도에서 시작하여 차츰 높은 온도를 지나 다시 낮은 온도로 이동되도록 하였다.When the coated aluminum sheet is suddenly dried at a high temperature or suddenly cooled to a low temperature, a crack occurs in the ceramic coating due to a difference in the coefficient of thermal expansion of the ceramic and aluminum. In the present invention, only the middle part of the drying furnace generates heat so that the heat reaches the inlet and the outlet of the drying furnace so that the aluminum plate starts at a low temperature and gradually moves through the high temperature to the low temperature again.
[실시예 1]Example 1
액화세라믹과 안료와 희석제를 혼합하여 5분간 흔들고 5분간 안정시키는 것을 5회 반복하고, 이를 30℃에서 30시간 숙성시키고, 이를 교반기를 이용하여 1,000RPM으로 회전시켜 10분간 교반시켰다.The liquid ceramic, a pigment and a diluent were mixed, shaken for 5 minutes, and stabilized for 5 minutes. This was repeated 5 times, which was aged for 30 hours at 30 ° C., which was rotated at 1,000 RPM using a stirrer and stirred for 10 minutes.
알루미늄판의 표면을 샌딩한 다음, 이를 이동시키면서 샤워기를 이용하여 상온의 깨끗한 물로 3분간 세척하고, 90℃의 물로 다시 3분간 동일한 방법으로 세척한 다음, 에어로 강하게 3분간 세척하였다.After sanding the surface of the aluminum plate, using a shower while moving it was washed for 3 minutes with clean water at room temperature, washed again with water at 90 ℃ in the same way for 3 minutes, then washed with air for 3 minutes.
알루미늄판의 온도가 40℃로 되었을때 알루미늄판의 표면에 위와 같이 교반시킨 세라믹액을 분사하여 10μ 두께로 코팅을 한 다음, 90℃의 건조로를 15분간 통과하면서 건조시키고, 건조된 알루미늄판의 온도가 50℃가 되었을 때 20μ 두께로 2차로 세라믹을 코팅을 한 다음, 150℃의 건조로를 30분간 통과하면서 건조시킨 후, 상온에서 자연건조시켰다.When the temperature of the aluminum plate is 40 ℃ by spraying the ceramic solution stirred on the surface of the aluminum plate as described above to a coating 10μ thickness, and dried by passing through a 90 ℃ drying furnace for 15 minutes, the temperature of the dried aluminum plate When the temperature reaches 50 ° C., the ceramic was secondly coated to a thickness of 20 μ, then dried while passing through a drying furnace at 150 ° C. for 30 minutes, and then naturally dried at room temperature.
이와 같이 하여 코팅을 한 결과 점착도와 광택도가 매우 우수하였다.As a result of coating, the adhesion and gloss were excellent.
세라믹을 교반할 때 흔드는 시간을 5분 이하로 줄이거나 흔드는 회수를 5회 이하로 줄인 결과 숙성이 잘 안되고 핀홀현상이 생기며 끓는 현상이 생겨 교반이 잘 안되었다. 그러나 흔드는 시간을 5분 이상 늘이거나 흔드는 회수를 5회 이상 늘인 경우에는 실시예와 동일한 결과를 얻었다.When shaking the ceramics, the shaking time was reduced to 5 minutes or less, or the number of shaking was reduced to 5 times or less. As a result, it was not ripened well, pinholes were formed, and boiling was not good. However, the same result as in Example was obtained when the shaking time was increased by 5 minutes or more or the number of shaking was increased by 5 or more times.
35℃ 이상의 온도에서 세라믹을 숙성시킨 결과 핀홀현상 및 포화현상이 생기고 열이 발생하였고, 25℃ 이하의 온도에서 숙성시킨 결과 숙성시간이 길어지고 코팅시에 점착도가 떨어졌다. 30시간 이하로 숙성시킨 결과 숙성이 잘 안되고 핀홀현상이 생기고 코팅시에 점착도가 떨어졌다. 그러나, 30시간 이상 숙성시킨 경우에도 실시예와 동일한 결과를 얻었다.As a result of aging the ceramic at a temperature above 35 ° C., pinhole and saturation occurred and heat was generated. As a result of aging at a temperature below 25 ° C., the aging time was long and the adhesion was decreased during coating. Aging for less than 30 hours resulted in poor aging, pinhole phenomenon and poor adhesion during coating. However, even when aged for 30 hours or more, the same results as in Example were obtained.
교반시에 800RPM 이하의 회전속도로 교반을 한 결과 교반이 늦어졌고, 1,200RPM 이상의 회전속도로 교반을 한 결과 포화현상이 생겼다. 그리고 10분 이하로 교반을 시킨 결과 핀홀현상이 생기고 코팅시에 분사가 잘 안되고 점착도가 떨어졌다. 그러나 10분 이상 교반을 시킨 경우에도 실시예의 경우와 동일한 결과를 얻었다.Stirring was slowed as a result of stirring at a rotational speed of 800 RPM or less, and saturation occurred as a result of stirring at a rotational speed of 1,200 RPM or more. When the mixture was stirred for 10 minutes or less, pinholes were formed, spraying was poor, and adhesion was poor. However, even when stirring was carried out for 10 minutes or more, the same result as in the case of Example was obtained.
1차 코팅시에 알루미늄판의 온도가 30℃ 이하에서 코팅을 한 결과 세라믹이 몰리는 현상이 생기고 점착도가 약하고 코팅후 건조시킬 때 끓는 현상이 생겼다. 알루미늄판의 온도가 50℃ 이상인 상태에서 코팅을 한 결과 핀홀현상이 생겼다. 1차 코팅시에 세라믹을 15μ 이상의 두께로 코팅한 결과 광택도가 떨어지고 코팅시에 흘러내리는 문제점이 있었다.As a result of coating the aluminum plate at the temperature of 30 ° C. or lower during the first coating, the ceramic was crushed, the adhesiveness was weak, and boiling occurred when the coating was dried. As a result of coating the aluminum plate at a temperature of 50 ° C. or higher, a pinhole phenomenon occurred. When coating the ceramic to a thickness of 15μ or more during the primary coating, there was a problem that the glossiness was degraded and flowed down during the coating.
1차 코팅후 건조시에 20분 이상 건조시킨 결과 2차 코팅시에 점착도가 떨어졌고, 10분 이하로 건조시킨 결과 2차 코팅시에 세라믹이 흘러내리는 문제점이 있었다. 건조로의 온도를 120℃ 이상으로 올린 결과 끓는 현상과 핀홀현상이 생겼고, 건조로의 온도를 60℃ 이하로 낮춘 결과 건조가 덜 되어 2차 코팅시에 세라믹이 흘러내리는 문제점이 있었다.As a result of drying after the first coating for 20 minutes or more, the adhesiveness was decreased during the secondary coating, and when dried for 10 minutes or less, there was a problem that the ceramic flowed during the secondary coating. As a result of raising the temperature of the drying furnace to more than 120 ℃ boiling phenomenon and pinhole phenomenon occurred, as a result of lowering the temperature of the drying furnace to 60 ℃ or less there is a problem that the ceramic flows during the second coating is less dry.
[실시예 2]Example 2
실시예 2에서 희석재로 물 대신 공업용 알콜을 사용하였다.In Example 2, an industrial alcohol was used instead of water as a diluent.
그 결과 점착도와 광택도는 실시예 1의 경우와 비슷하였으나 건조시간은 실시예 1에 비해 단축되었다.As a result, the adhesiveness and glossiness were similar to those of Example 1, but the drying time was shorter than that of Example 1.
이상과 같이 본 발명의 방법으로 제조된 세라믹이 코팅된 알루미늄판은 온도변화 및 공해에 잘 견디고, 때가 묻을 경우 세척이 용이하고, 건축내외장재로 사용될 경우 빗물에 의하여 저절로 세척이 될 뿐만 아니라, 건축내외장재로 사용될 경우에는 세라믹으로부터 원적외선이 방사되어 건강에도 좋다.As described above, the ceramic-coated aluminum sheet manufactured by the method of the present invention withstands temperature change and pollution well, and is easy to clean when stained, and when used as a building interior and exterior material, is not only cleaned by rain, but also by building interior and exterior materials. When used as a far infrared rays from the ceramic is good for health.
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---|---|---|---|---|
KR900003415A (en) * | 1988-08-31 | 1990-03-26 | 오요환 | Ceramic coating method of metal surface |
KR910004835A (en) * | 1989-08-29 | 1991-03-29 | 주상명 | Ceramic coating method of metal surface |
KR930019849A (en) * | 1992-03-09 | 1993-10-19 | 박하용 | How to coat ceramic on aluminum |
KR950018664A (en) * | 1993-12-07 | 1995-07-22 | 조영복 | How to coat ceramic on aluminum plate |
-
1996
- 1996-10-10 KR KR1019960045613A patent/KR19980026989A/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR900003415A (en) * | 1988-08-31 | 1990-03-26 | 오요환 | Ceramic coating method of metal surface |
KR910004835A (en) * | 1989-08-29 | 1991-03-29 | 주상명 | Ceramic coating method of metal surface |
KR930019849A (en) * | 1992-03-09 | 1993-10-19 | 박하용 | How to coat ceramic on aluminum |
KR950018664A (en) * | 1993-12-07 | 1995-07-22 | 조영복 | How to coat ceramic on aluminum plate |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030045523A (en) * | 2001-12-04 | 2003-06-11 | 대동모벨시스템 주식회사 | Coating method of impurities accumulation prevention layer for a automobile idle speed control actuator |
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