KR19990012913A - Galvalume colored transparent CREE coated steel sheet and its manufacturing method - Google Patents
Galvalume colored transparent CREE coated steel sheet and its manufacturing method Download PDFInfo
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- KR19990012913A KR19990012913A KR1019970036488A KR19970036488A KR19990012913A KR 19990012913 A KR19990012913 A KR 19990012913A KR 1019970036488 A KR1019970036488 A KR 1019970036488A KR 19970036488 A KR19970036488 A KR 19970036488A KR 19990012913 A KR19990012913 A KR 19990012913A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/20—Metallic substrate based on light metals
- B05D2202/25—Metallic substrate based on light metals based on Al
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2425/00—Indexing scheme corresponding to the position of each layer within a multilayer coating relative to the surface
- B05D2425/01—Indexing scheme corresponding to the position of each layer within a multilayer coating relative to the surface top layer/ last layer, i.e. first layer from the top surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2508/00—Polyesters
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Abstract
본 발명은 소지강판이 갈바륨강판(아연-55%알루미늄)인 착색 투명크리어 도장강판의 제조기술에 있어서, 기존의 수용성 갈바륨 착색강판의 내식성과 도막의 가공성 및 내화학성을 향상시킬 수 있는 갈바륨 착색 투명 크리어 도장강판 및 그 제조방법에 관한 것으로, 용융아연도금강판, 갈바륨도금강판, 알루미늄강판중 어느하나의 표면상에 선형 폴리에스테르수지 33∼40%, 색상안료 1%이내, 멜라민 수지 3∼5%, 에폭시 수지 3∼10%, 에스테르계 용제 15∼20%, 방향족 탄화수소계 용제 30∼40%, 슬림 첨가제 1∼2%, 기타 첨가제 1∼2%로 혼합된 성분의 도료를 제조하여 하도인 프라이머 도장없이 상도도장을 소지강판의 건조온도를 210∼240℃ 범위로 하며, 도막부착량을 3∼20㎛범위로 형성하도록 구성된 특징이 있다.The present invention is a galvalume-colored transparent which can improve the corrosion resistance and the workability and chemical resistance of the existing water-soluble galvalume-colored steel sheet in the manufacturing technology of the colored transparent crust-coated steel sheet whose base steel sheet is galvalume steel sheet (zinc-55% aluminum). The present invention relates to a cree coated steel sheet and a method of manufacturing the same, wherein the linear polyester resin is 33 to 40% on the surface of any one of hot-dip galvanized steel sheet, galvalume-plated steel sheet, and aluminum steel sheet, and less than 1% of color pigment and 3 to 5% of melamine resin. , Primer of 3-10% epoxy resin, 15-20% ester solvent, 30-40% aromatic hydrocarbon solvent, 1-2% slim additive, 1-2% other additives The top coat is coated without coating, and the drying temperature of the steel sheet is 210 to 240 ° C., and the coating amount is formed to be in the range of 3 to 20 μm.
Description
본 발명은 갈바륨 착색 투명 크리어 도장강판 및 그 제조방법에 관한 것으로, 더욱 상세하게는 소지강판이 갈바륨강판(아연-55%알루미늄)인 착색 투명크리어 도장강판의 제조기술에 있어서, 기존의 수용성 갈바륨 착색강판의 내식성과 도막의 가공성 및 내화학성을 향상시킬 수 있는 갈바륨 착색 투명 크리어 도장강판 및 그 제조방법에 관한 것이다.The present invention relates to a galvalume-colored transparent clear-coated steel sheet and a method for manufacturing the same, and more particularly, in the manufacturing technology of colored transparent-clear-coated steel sheet, in which the base steel sheet is a galvalume-steel sheet (zinc-55% aluminum). The present invention relates to a galvalume colored transparent cree coated steel sheet capable of improving the corrosion resistance of a steel sheet, the workability and chemical resistance of a coating film, and a method of manufacturing the same.
일반적으로 갈바륨 도금강판은 용융아연 도금강판과 비교하여 우수한 내식성과 미려한 외관으로 건축의 방재 및 가전제품의 부품소자 등에 널리 이용되고 있으며, 계속적으로 물량이 증가하고 있는 추세이다.In general, galvalume-plated steel sheet is widely used in the disaster prevention of construction and component devices of home appliances compared to hot-dip galvanized steel sheet, and the quantity is continuously increasing.
그런데 수요가의 욕구가 다양화, 고급화됨으로써 다양한 기능성을 가진 제품에 대한 선호도로 충족시키고자 연합철강공업(주)에서는 기존의 갈바륨 강판의 미려한 외관과 내지문성을 동시에 살리면서 제품의 고급화와 기능성을 가미한 다양한 색상의 착색 크리어(일명:크린륨)제품이 상용화되어 시판되고 있다.However, in order to satisfy the demand for products with various functionalities by diversifying and upgrading the demands of demand, Yonhap Steel Industries Co., Ltd. has improved the quality and functionality of the product while simultaneously utilizing the beautiful appearance and fingerprint resistance of the existing galvalume steel sheet. Various colors of colored crees (aka: chromium) products are commercially available.
그러나, 도막의 부착량이 1∼2마이크로 정도의 박막으로 제조되어 제품공정 작업시에 용액의 점도 편차와 롤편차의 발생으로 인한 판면색차의 발생 및 불균일성으로 연속적인 작업시에 로트별 관리상의 문제점이 발생할 소지가 있다.However, since the adhesion amount of the coating film is made into thin film of about 1 to 2 micrometers, there is a problem in the management of each lot during continuous operation due to the generation and nonuniformity of the plate color difference due to the viscosity variation and the roll deviation of the solution during product processing. There is a possibility to occur.
이러한 문제점의 발생소지는 사용할때에 소지강판을 보호하고자 주위환경과 계속적인 접촉시 자기희생 효과 및 음극보호 작용으로 아연이나 알루미늄이 주위환경이나 가공시에 피막의 손상에 의한 백청이나 흑변화가 진행됨으로써 건축물의 외장재로 사용할 경우에 외관을 해치게 될뿐만 아니라, 각종의 형상 가공시에 가공부위의 도막이 일부 벗겨지거나 심하게 훼손되어 강판의 수명을 단축하게 되어 장기간 사용에 문제점이 발생하게 된다.This problem is caused by the self-sacrificing effect and the negative electrode protection effect during continuous contact with the surrounding environment to protect the base steel sheet during use. As a result, when used as an exterior material of a building, not only the appearance is damaged, but the coating film of the processing part is peeled off or severely damaged during processing of various shapes, which shortens the life of the steel sheet, causing problems in long-term use.
또한 이러한 문제점을 해결하고자 도금강판상에 각종의 색상도료를 피복하여 피막 특성을 그대로 유지시키면서 성형가공성을 확보하고 수요자의 다양한 색상의 욕구를 충족시키고자 PCM(Pre-coated metal) 도장처리를 실시하는 것으로, 도 1에 도시한 바와 같이, 이러한 도장강판은 각종 색상의 도료에 위한 도장을 실시하기 이전에 도금강판(2)과 상도도장(Top)(8)과의 밀착성과 내식성을 향상시키고자 도금강판을 크로메이트 처리(반응형, 도포형)를 실시하여 크로메이트 피막층(4)을 형성하고, 그 위에 에폭시 계통의 하도도장(Primer)(6)을 피복한 후에 최종적으로 상도도장(8)을 실시하여 2 코팅 ,2 베이킹 공정으로 최종 제품을 만든다.In order to solve this problem, by coating various color paints on the plated steel sheet, PCM (Pre-coated metal) coating treatment is performed to secure molding processability while satisfying the needs of various colors of users while maintaining the coating characteristics. As shown in FIG. 1, such a coated steel sheet is plated to improve adhesion and corrosion resistance of the coated steel sheet 2 and the top coating 8 before coating for various colors of paint. The steel sheet is subjected to chromate treatment (reaction type, application type) to form a chromate coating layer 4, and after coating an epoxy-based primer 6 on it, the top coating 8 is finally applied. 2 coating, 2 baking process to make the final product.
이러한 기존의 도장강판의 처리공정으로써는 갈바륨 도금강판(2)이 가지고 있는 미려한 무늬를 그대로 나타내지 못하는 점이 발생하게 되어 수요가의 다양한 욕구 충족에 미흡한 점으로 크게 대두되고 있다.As a conventional process of processing the coated steel sheet, the point that the beautiful pattern of the galvalume-plated steel sheet 2 does not appear as it is, it is emerging as a point that is insufficient to meet the various needs of the demand price.
따라서, 상기와 같은 종래의 문제점을 감안하여 창출된 것으로, 본 발명은 갈바륨 도금강판상에 하도도장으로 피복되는 에폭시 도료를 생략하고, 크로메이트 처리층위에 상도도장으로 각종의 연료가 첨가되어 다양한 색상의 발현이 가능한 고가공용 폴리에스테를 도료를 1 코팅한 것으로 소지강판의 온도가 210∼240℃범위에서 건조하였으며, 하도도장과 상도도장의 2개의 제조공정을 하나의 공정으로 단축시켜 기존의 도장처리 제품보다 제조원가의 절감효과 및 소지강판의 미려한 무늬의 유지가 가능하고, 가공성이 우수하여 피막의 손상을 방지할 수 있는 갈바륨 착색 투명 크리어 도장강판 및 그 제조방법을 제공한다.Therefore, the present invention was created in view of the above-described problems, and the present invention omits the epoxy coating which is coated with the undercoat on the galvalume plated steel sheet, and various fuels are added to the chromate treatment layer as the top coat, thereby providing various colors. It is a coating of high-processing polyester that can be expressed with one coating material, and the temperature of the steel sheet is dried in the range of 210 ~ 240 ℃. The present invention provides a galvalume-colored transparent clear-coated steel sheet and a method of manufacturing the same, which can reduce the manufacturing cost and maintain a beautiful pattern of the steel sheet, and can prevent damage to the coating due to excellent workability.
도 1 은 종래의 갈바륨 칼라도장강판 피막층을 나타내는 단면도.1 is a cross-sectional view showing a conventional galvalume color coated steel sheet coating layer.
도 2 는 본 발명에 따라 제조된 갈바륨도금 착색 투명크리어 도장강판 피막층의 단면도를 나타내는 단면도.Figure 2 is a cross-sectional view showing a cross-sectional view of the galvalume plated colored transparent clear coated steel sheet coating layer prepared according to the present invention.
도면의 주요 부분에 대한 부호의 설명Explanation of symbols for the main parts of the drawings
20: 도금강판 22: 크로메이트 피막층20: plated steel sheet 22: chromate coating layer
24: 고가공용 폴리에스테르 피막층24: Polyester film layer for high processing
상기 본 발명의 갈바륨 착색 투명 크리어 도장강판 및 그 제조방법은, 용융아연도금강판, 갈바륨도금강판, 알루미늄강판중 어느하나의 표면상에 선형 폴리에스테르수지 33∼40%, 색상안료 1%이내, 멜라민 수지 3∼5%, 에폭시 수지 3∼10%, 에스테르계 용제 15∼20%, 방향족 탄화수소계 용제 30∼40%, 슬림 첨가제 1∼2%, 기타 첨가제 1∼2%로 혼합된 성분의 도료를 제조하여 하도인 프라이머 도장없이 상도도장을 소지강판의 건조온도를 210∼240℃ 범위로 하며, 도막부착량을 3∼20㎛범위로 형성하도록 구성되어 있다.The galvalume-colored transparent clear-coated steel sheet of the present invention and a method of manufacturing the same are linear zinc resin 33-40%, color pigment 1% or less on the surface of any one of hot-dip galvanized steel sheet, galvalume-plated steel sheet and aluminum steel sheet, melamine 3 to 5% of resin, 3 to 10% of epoxy resin, 15 to 20% of ester solvent, 30 to 40% of aromatic hydrocarbon solvent, 1 to 2% of slim additive, and 1 to 2% of other additives. It is configured to form a coating coat with a drying temperature of 210 to 240 DEG C, and a coating film coating amount of 3 to 20 탆, without coating the primer.
이하, 본 발명을 첨부된 도면을 참조하여 아래와 같이 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings of the present invention will be described in detail as follows.
도 2 는 본 발명의 갈바륨 착색 투명 크리어 도장강판을 나타낸 도며이다.Figure 2 is a diagram showing a galvalume colored transparent CREE coated steel sheet of the present invention.
본 발명은 통상의 용융도금방법으로 제조된 갈바륨 도금강판을 사용하여 전처리로써 크로메이트가 처리된 시험편을 실험적으로 바코우터(bar coater)를 이용하여 상도의 도막 부착량이 3∼20㎛가 되도록 조절하였으며, 용액의 성상은 점도가 100∼110cps이며, 용액의 조성비가 선형 폴리에스테르 수지가 30∼40%, 색상안료(TiO2)가 1% 이내이고, 멜라민 수지가 3∼5%이고, 에폭시 수지가 3∼10%이고, 에스트테르계 용제가 15∼20%이고, 방향족 탄화수소계 용제가 30∼40%이고, 슬립 첨가제가 1∼2%이고, 기타 첨가제가 1∼2%로 혼합된 성분의 도료를 제조하여 적용하였다.The present invention was adjusted to the coating thickness of the top coat using a bar coater experimentally subjected to a chromate treated test specimen using a galvalume plated steel sheet prepared by a conventional hot dip plating method, The solution has a viscosity of 100 to 110 cps, a composition ratio of 30 to 40% of a linear polyester resin, a color pigment (TiO 2 ) of less than 1%, a melamine resin of 3 to 5%, and an epoxy resin of 3 10-10%, 15-20% ester solvent, 30-40% aromatic hydrocarbon solvent, 1-2% slip additive, 1-2% other additives Was prepared and applied.
먼저 각종의 성분으로 혼합 제조된 도료를 교반기를 이용하여 교반을 실시한 것으로, 이는 교반에 의해서 혼합된 성분들이 적정한 분포에 의한 관능기와의 반응성을 양호하게 하기 위해서 필요하다.First, the coating material mixed with various components was stirred using a stirrer, which is necessary in order to improve the reactivity with functional groups due to proper distribution of the components mixed by stirring.
상기 도료의 교반이 끝나면, 용융아연도금설비에서 하도인 프라이머층의 도장없이 크로메이층만이 처리된 300mm X 300mm 크기의 시험편을 채취한 다음 도막의 건조온도를 210∼240℃의 범위에서 건조하였으며, 각종의 바코우터를 이용하여 도막 부착량이 3∼20㎛ 상도도장만의 착색투명 크리어 도장강판을 제조하였다.After the agitation of the paint, a 300 mm X 300 mm sized specimen was treated in the hot dip galvanizing facility without the coating of the primer layer, which was the bottom coat, and then the drying temperature of the coating film was dried in the range of 210 to 240 ° C. Using various kinds of bar coaters, a colored transparent CREE coated steel sheet having a coating film adhesion amount of only 3 to 20 µm was coated.
본 발명에 있어서는 소지갈바륨강판의 온도가 210℃이하가 되면 피막내의 관능기와의 결합력이 약해 쉽게 피막의 손상이 발생했을 뿐만 아니라 밀착성이 불량한 것으로 나타냈으며, 상기 240℃이상이 되면 도막의 일부가 끓는 현상이 발생하여 기공이 발생하였고 밀착성 및 외관이 불량한 것으로 나타났다.In the present invention, when the temperature of the base galvalumeum steel sheet is 210 ℃ or less, the bonding force with the functional groups in the film is weak, not only the damage of the film was easily generated, but also showed poor adhesion, when the above 240 ℃ part of the coating film boils Occurrence of pores occurred and poor adhesion and appearance.
상기 도막부착량이 3㎛ 이하면 소지도금강판과 밀착성이 불량하고, 도막의 내윤활 마모성이 미약하여 도막의 내슬립성 미약하였으며, 부식특성시험 평가에서 브리스터 발생폭이 증가하는 것으로 평가되었고, 또한 20㎛ 이상이면 내식성을 증가하나 경제성이 없는 것으로 나타났다.When the coating film adhesion amount was less than 3㎛, the adhesion with the small plated steel sheet was poor, and the lubrication wear resistance of the coating film was poor, so that the slip resistance of the coating film was poor. Corrosion resistance increased more than 20㎛, but there was no economy.
하도인 프라머 도장없이 1코팅만을 실시하여도 기존의 사용강판인 갈바륨 수용성 착색강판(크린륨)과 비교하여 우수한 피막특성을 나타내었으며, 하도도장을 실시한 2코팅 도장강판과 동등의 도막특성을 나타낸 것으로, 이는 기존의 일반 폴리에스테에 사용되는 수지가 도막의 가교제로 사용되는 멜라민(헥시-메톡시-메틸멜라민)수지와 가교형성시에 망상구조를 가지게 됨으로써 도막이 형성된 후에 도막의 연신이 극히 제한되어 가공성이 열화한 것으로 나타나는 반면에 본 발명에 사용된 고가공용 선형 폴리에스테르 피막층(20)은 주기 지방족인 성분과 비대칭을 갖는 알콜계의 원료가 사용되어 짐으로써, 작은 가지상의 선형 폴리에스테르가 전체적으로 고르게 분산되어 형성됨으로써 유연성이 부여되고 자외성에 약한 에스테르(COO-)결합의 단위 체적당 수량을 줄여줌으로써 내구력이 향상되어 도장후 가공시에 나타나는 가공부위의 도막균열 현상이 없는 양호한 고가공성의 특성을 나타낸다.Even though only one coating was applied without primer coating, it showed superior coating properties compared to galvalume water-soluble colored steel (Crylium), which is a used steel plate, and showed the same coating properties as the two coating steel plates coated with the coating. This is because the resin used in general polyester has a network structure at the time of crosslinking with melamine (hex-methoxy-methylmelamine) resin used as a crosslinking agent of the coating film, so that the stretching of the coating film is extremely limited after the coating film is formed. While the processability appears to be deteriorated, the high processing linear polyester film layer 20 used in the present invention is made of alcohol-based raw materials having asymmetry with the periodic aliphatic component, so that the linear branched polyester of the small branch is evenly distributed throughout. Units of ester (COO-) bonds that are imparted with flexibility by being dispersed and are weak to ultraviolet By reducing the quantity-per-The properties of the preferred high-porous coating layer improves durability without cracks developing in the processing site it may appear at the time of machining after coating.
상기 본 발명을 통한 하도인 프라이머 도장없이 상도도장(24)만을 도장하여도 기존의 갈바륨 수용성 착색강판보다 우수하고, 2코팅을 사용한 도금강판의 경우와 동등의 도막특성을 나타내었고, 가공성과 윤활성이 우수한 갈바륨 착색 투명칼라 도금강판의 제조가 가능해짐에 따라 공정단축효과에 제조원가의 절감과 도료의 희석과 분상용도로 포함된 신나와 유기용제의 발생저감으로 인한 공해유발요소의 감소로 근무환경이 개선될 것으로 기대되며, 고가공이 요구되는 건축자재 및 셔터, 지붕재, 가전제품으로의 확대적용이 가능할 것으로 기대된다.Even if only the top coat 24 is coated without primer coating, which is through the present invention, it is superior to the conventional galvalume water-soluble colored steel sheet, and exhibits the same coating characteristics as that of the plated steel sheet using two coatings. As it is possible to manufacture excellent galvalume-colored transparent color plated steel sheets, the working environment is improved by reducing the manufacturing cost due to the process shortening effect, and reducing the pollution-causing factors due to the reduction of thinner and organic solvents included in the dilution of paint and separation phase. It is expected to be applied to building materials, shutters, roofing materials, and home appliances that require high processing.
하기 실시예는 본 발명의 방법으로 제조된 고가공용 폴리에스테르 도료를 갈바륨 도금강판에 적용하여 그 특성을 평가하였으며, 비교재로서 하도인 프라이머가 도장된 일반 폴리에스테르 도장 강판 수용성 착색강판을 사용하였다.The following example was applied to the galvanium plated steel sheet of the high-processing polyester paint prepared by the method of the present invention to evaluate its properties, and used as a comparative material, a general polyester coated steel plate water-soluble colored steel sheet coated with primer.
특성평가 및 비교항목으로는 염수분무에 의한 브리스터발생폭, 층격시험, 밀착성 및 내온수 밀착성, 연필경도, MEK성, 내약품성을 평가하였다.The characteristics and comparison items were evaluated for the breach generation width, layer test, adhesion and hot water adhesion, pencil hardness, MEK resistance, and chemical resistance by salt spraying.
내식성은 5%, 35℃ NaCl 용액중에서의 500시간 경과후의 브리스터 발생폭으로 바교하였으며, 표면외관은 육안에 의한 피막의 균일성을 관찰하였고, 도장강판을 180도 밴딩(0T,1T)시험과 증류수(40℃)에 240시간 침지후, 바둑판 모양으로 1mm X 1mm 크로스컷(Cross-Cut)한 다음 3.5mm 볼 6mm 압출후 테이프 테스트에 의해서 도막의 밀착성을 평가하였다.Corrosion resistance was changed to 5%, the width of the brister after 500 hours in 35 ℃ NaCl solution, the surface appearance was observed uniformity of the coating by the naked eye, and coated steel sheet 180 degrees banding (0T, 1T) test and After immersion in distilled water (40 ° C.) for 240 hours, 1 mm × 1 mm cross-cut into a checkerboard shape, and then the adhesiveness of the coating film was evaluated by a tape test after 3.5 mm ball 6 mm extrusion.
충격시험은 500g 추를 50cm높이에서 낙하시켜 도막의 균열여부를 평가하였으며, 연필경도 시험을 위하여 H,2H 연필을 통한 긁힘 발생유무를 관찰하였다.In the impact test, a 500 g weight was dropped at a height of 50 cm to evaluate the crack of the coating film, and the presence of scratches was observed through the H and 2H pencil for the pencil hardness test.
상기 도막의 내약품성(HCl,NaOH)을 평가하기 위하여 5%로 희석한 용액을 72시간 반응처리 후에 도막의 변색과 반응 유무를 관찰하였으며, MEK(메틸-에틸-케톤)약품으로 도막을 문질러서 손상여부를 평가하였으며, 그 결과를 표 1에 나타내었다.In order to evaluate the chemical resistance (HCl, NaOH) of the coating film, the solution diluted to 5% was observed after 72 hours of discoloration and reaction of the coating film, and rubbing the coating film with MEK (methyl-ethyl-ketone) It was evaluated whether or not, the results are shown in Table 1.
하기 실시예는 갈바륨 도금강판상에 본 발명의 방법으로 용액의 조성비가 선형 폴리에스테르 수지가 30∼40%, 색상안료(Tio2)가 1%이내, 멜라민 수지가 3∼5%, 에폭시 수지가 3∼10%, 에스테르계 용제가 15∼20%, 방향족 탄화수소계 용제가 30∼40%, 슬립 첨가제가 1∼2%, 기타 첨가제가 1∼2%로 혼합된 성분의 도료를 제조하여 그 특성을 조사한 것이다.In the following examples, the composition ratio of the solution on the galvalume plated steel sheet is 30 to 40% of the linear polyester resin, less than 1% of the color pigment (Tio 2 ), 3 to 5% of the melamine resin, epoxy resin 3-10%, 15-20% ester solvent, 30-40% aromatic hydrocarbon solvent, 1-2% slip additive and 1-2% other additives were prepared to produce a coating material. Will be investigated.
실시예1Example 1
고가공용 폴리에스테르계의 도료의 적용을 위해 선형 폴리에스테르 수지가 30%, 색상안료(TiO2)가 1%이내이고, 멜라민 수지가 5%이고, 에폭시 수지가 5%이고, 에스테르계 용제가 20%이고, 방향족 탄화수소계 용제가 35%, 슬립 첨가제가 2%이고, 가타 첨가제가 2%로 혼합된 성분으로 도금강판 건조온도가 210℃이고, 하도인 프라이머 도장없이 상도도장만으로 도막부착량이 5㎛가 되도록 갈바륨 도금강판상에 도장했을때의 제품이다.For the application of high-performance polyester paint, linear polyester resin is less than 30%, color pigment (TiO 2 ) is less than 1%, melamine resin is 5%, epoxy resin is 5%, ester solvent is 20 %, Aromatic hydrocarbon solvent is 35%, slip additive is 2%, and other additive is mixed with 2%. The plated steel sheet has a drying temperature of 210 ° C. This product is coated on galvalume plated steel sheet to
실시예 2,3Example 2,3
실시예 1과 동일하되 도막부착량이 10,15㎛가 되도록 처리했을 때의 제품이다.In the same manner as in Example 1, the product was treated with a coating film adhesion amount of 10,15 µm.
실시예 4Example 4
고가공용 폴리에스테르계의 도료와 적용을 위해 선형 폴리에스테르 수지가 35%, 색상안료(TiO2)가 1%이내, 멜라민 수지가 3%, 에폭시 수지가 7%, 에스테르계 용제가 15%, 방향족 탄화수소계 용제가 35%, 슬립 첨가제가 2%, 기타 첨가제가 2%로 혼합된 성분으로 도금강판 건조온도가 220℃이고, 하도인 프라이머 도장없이 상도도장만으로 도막부착량이 5㎛가 되도록 갈바륨 도금강판상에 도장했을때의 제품이다.Linear polyester resin is less than 35%, color pigment (TiO 2 ) is less than 1%, melamine resin is 3%, epoxy resin is 7%, ester solvent is 15%, aromatic Galvalume-coated steel sheet with 35% hydrocarbon solvent, 2% slip additive, and 2% other additives, coated steel sheet with drying temperature of 220 ℃ It is a product when painting on.
실시예 5,6Example 5,6
실시예 4와 동일하되 도막부착량이 10,15㎛가 되도록 처리했을 때의 제품이다.In the same manner as in Example 4, the product was treated with a coating film adhesion amount of 10,15 µm.
실시예 7Example 7
고가공용 폴리에스테르계 도료의 적용을 위해 선형 폴리에스테르 수지가 40%이고, 색상안료(TiO2)가 1%이내, 멜라민 수지가 3%, 에폭시 수지가 15%, 에스테르계 용제가 15%, 방향족 탄화수소계 용제가 35%, 슬립 첨가제가 1%, 기타 첨가제가 1%로 혼합된 성분으로 도금강판(20) 건조온도가 230℃이고, 하도인 프라이머 도장없이 상도도장(24)만으로 도막부착량이 5㎛가 되도록 갈바륨 도금강판상에 도장했을때의 제품이다.Linear polyester resin is 40%, color pigment (TiO 2 ) is less than 1%, melamine resin is 3%, epoxy resin is 15%, ester solvent is 15%, aromatic for application of high processing polyester paint 35% of hydrocarbon solvent, 1% of slip additive, and 1% of other additives. The coating temperature of coating plated steel sheet 20 is 230 ℃, and only the top coat 24 is applied without primer coating. It is a product when it is coated on a galvalume plated steel sheet so that it may become micrometer.
실시예 8,9Example 8,9
실시예 7과 동일하되 도막부착량이 10,15㎛가 되도록 처리했을 때의 제품이다.In the same manner as in Example 7, the product was treated when the coating film deposition amount was 10,15 µm.
비교예1Comparative Example 1
수용성 우레탄계의 착색도료를 하도인 프라이머를 크로메이트가 처리된 후에 건조온도가 180℃로 2㎛가 되도록 용융갈바륨 도금강판상에 피복했을 때의 제품이다.It is a product when the primer coated with the water-soluble urethane-based coloring coating is coated on a molten galvalume plated steel sheet so that the drying temperature becomes 2 占 퐉 at 180 ° C after the chromate treatment.
비교예2Comparative Example 2
일반변성 폴리에스테르계 도료를 하도인 프라이머를 건조온도가 224℃로 5㎛ 도장한 후에, 상도도장으로 건조온도가 232℃이고, 도막부착량이 15㎛가 되도록 하여 층도막두께가 20㎛로 용융갈바륨 도금강판상에 도장했을 때의 제품이다.After coating the primer with the general modified polyester paint with a drying temperature of 224 ° C. for 5 μm, the coating layer has a drying temperature of 232 ° C. with a coating thickness of 15 μm and a layer coating thickness of 20 μm. It is a product when coated on a plated steel sheet.
상기와 같이 실시된 실시예1∼9와 비교예1,비교예2의 결과를 표 1 에 표시하였다.Table 1 shows the results of Examples 1 to 9, Comparative Example 1 and Comparative Example 2 carried out as described above.
◎: 양호◎: good
△: 보통△: normal
X: 불량X: bad
상기 표 1에 도시한 바와 같이 본 발명에 의해 의한 실시예가 비교예의 것보다 효과가 월등한 것을 확인할 수가 있다.As shown in Table 1, it can be confirmed that the Examples according to the present invention are superior to those of the Comparative Examples.
본 발명 갈바륨 착색 투명 크리어 도장강판 및 그 제조방법에 의해 하도인 프라이머 도장없이 상도도장만을 도장하여도 기존의 갈바륨 수용성 착색강판보다 우수하고, 2코팅을 사용한 도금강판의 경우와 동등의 도막특성을 나타내었고, 가공성과 윤활성이 우수한 갈바륨 착색 투명칼라 도금강판의 제조가 가능해짐에 따라 공정단축효과에 제조원가의 절감과 도료의 희석과 분상용도로 포함된 신나와 유기용제의 발생저감으로 인한 공해유발요소의 감소로 근무환경이 개선될 것으로 기대되며, 고가공이 요구되는 건축자재 및 셔터, 지붕재, 가전제품으로의 확대적용이 가능한 것으로 그 효과가 뛰어나다.According to the present invention galvalume colored transparent CREE coated steel sheet and the manufacturing method thereof, even coating only the top coating without primer coating, which is superior to the existing galvalume water-soluble colored steel sheet, exhibits the same coating characteristics as that of the plated steel sheet using two coatings. As it becomes possible to manufacture galvalume-colored transparent color plated steel sheets with excellent processability and lubricity, it is possible to reduce the production cost due to the process shortening effect, and to reduce pollution caused by thinner and organic solvents included in paint dilution and separation. The reduction is expected to improve the working environment, and it is possible to expand the application to building materials, shutters, roofing materials, and home appliances that require high processing.
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