WO2011145783A1 - Plated and coated laminated steel sheet - Google Patents

Plated and coated laminated steel sheet Download PDF

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Publication number
WO2011145783A1
WO2011145783A1 PCT/KR2010/006775 KR2010006775W WO2011145783A1 WO 2011145783 A1 WO2011145783 A1 WO 2011145783A1 KR 2010006775 W KR2010006775 W KR 2010006775W WO 2011145783 A1 WO2011145783 A1 WO 2011145783A1
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Prior art keywords
weight
parts
plating
coating
coating layer
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PCT/KR2010/006775
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French (fr)
Korean (ko)
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김현중
주재현
장삼규
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동부제철 주식회사
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Priority to CN2010800668022A priority Critical patent/CN102892916A/en
Publication of WO2011145783A1 publication Critical patent/WO2011145783A1/en

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/30—Fluxes or coverings on molten baths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips

Definitions

  • the present invention relates to a plated coating composite steel sheet, and more particularly, to a plated coating composite steel sheet in which a plating layer is formed on one surface and only a coating layer is formed on the other surface without a plating layer.
  • Iron is the most common metal on earth and can be obtained easily and inexpensively. Such iron is mostly used as a steel sheet in the form of a thin plate for various purposes, and since it is easily corroded in the air, a plating process is performed to form a film on the iron surface for the purpose of preventing corrosion and rust.
  • zinc using the sacrificial method is most frequently used, and zinc-aluminum alloy plating and aluminum plating are also widely used.
  • Plating methods are electroplating and hot-dip plating.
  • the electroplating method is mainly limited to zinc plating due to the problem of efficiency, so most plating products are subjected to hot dip plating.
  • both sides of the steel plate are plated, so that even if one side is not required for plating, both sides are plated and waste is generated.
  • an object of the present invention is to solve the above-described problems, to provide a plated coating composite steel sheet so that the plated layer is formed on one side and only the coating layer is formed on the other side so that the plated layer can be formed on only one side.
  • the present invention is a plating layer is formed on one surface, the coating layer is formed on the other surface without a plating layer.
  • the coating layer includes a silicone polyester epoxy resin, a butylate melamine resin, a black pigment, a mica, and a silica component.
  • the coating layer has a dry coating thickness of 2 ⁇ 10 ⁇ m.
  • the paint forming the coating layer is 30 to 55 parts by weight of a silicone polyester epoxy resin based on the total weight of the paint; 5-15 weight part of butyrate melamine resin; 10 to 30 parts by weight of iron oxide black pigment; 5-15 parts by weight of mica; 1 to 5 parts by weight of silica; 0.3 to 2 parts by weight of polyacrylate resin; And the remaining amount of the solvent to be 100 parts by weight of the total weight of the paint.
  • the plating layer it is possible to prevent the plating layer from being formed by forming a coating layer on one surface of a steel sheet using a paint mainly composed of a silicone polyester epoxy resin. Therefore, a plated layer is formed on one surface, and a plated composite steel sheet in which only a coating layer is formed on the other surface can be manufactured.
  • the adhesion between the iron and the coating layer is excellent and does not require a separate pretreatment for painting. Therefore, there is an effect that can shorten the coating process.
  • coated coating steel sheet of the present invention can be removed by the mechanical polishing. Therefore, there is an effect that can be utilized as a steel sheet of various characteristics.
  • FIG. 1 is a schematic view showing a procedure for producing a plated coated steel sheet of the present invention.
  • a plating layer is formed on one surface, and a coating layer coated with a paint having a plating inhibiting component is formed on the other surface so that the plating layer is not formed.
  • the coating is performed on a surface which is not desired to be plated, and the plating process is performed so that only the unpainted surface is plated.
  • the plating process adopts a hot dip plating process.
  • hot-dip plating the steel sheet is immersed in the molten plating solution and then released. Therefore, the coating layer should not be immersed in the molten plating solution, and heat resistance that can withstand high temperature heat is also required.
  • Heat resistance means a property that can withstand high temperature heat, and the hot-dip plating process is required because the high temperature heat treatment is performed to maintain the mechanical properties of the steel sheet and the reducing atmosphere of the steel sheet surface before plating.
  • the coating may be performed after the plating process to form a coating layer on the plating layer.
  • it is effective to secure corrosion resistance, but if the coating layer alone is sufficient to prevent corrosion resistance, the cost should be lost.
  • the coating layer is inferior in adhesion with the plating layer rather than iron, there is also a problem that a separate pretreatment process before the coating is added to improve this.
  • a plating layer is formed on one surface by a painting and plating sequence as shown in FIG. 1, and a coating plating composite steel sheet having a coating layer is formed on the other surface without a plating layer.
  • the components of the coating layer include silicone polyester epoxy resins, butyrate melamine resins, black pigments, mica and silica.
  • the coating layer is formed of a paint comprising a silicone polyester epoxy resin, a butylate melamine resin, a black pigment, a mica, and a silica.
  • the main component of the coating layer is a silicone polyester epoxy resin.
  • the Si component of the silicone polyester epoxy resin lowers the surface tension of the coating film to prevent the materials to be plated from sticking to the coating layer. Therefore, it is possible to manufacture a coated plating composite steel sheet having a coating layer without a plating layer.
  • the paint forming the coating layer is based on the total weight of the paint.
  • the paint further contains a poly acrylate resin for pigment dispersion.
  • the poly acrylate resin is included in the range of 0.3 to 2 parts by weight based on the total weight of the paint.
  • the coating material is a silicone polyester epoxy resin excellent in blocking the molten plating liquid and a melamine resin for curing and an inorganic pigment providing heat resistance, and is excellent in preventing the adhesion of the molten plating liquid.
  • the coating layer has a dry coating thickness of 2 to 10 ⁇ m. If the dry coating thickness is less than 2 ⁇ m, the effect of preventing the plating is insufficient, and thus it is difficult to achieve the desired purpose. If the dry coating thickness is more than 10 ⁇ m, the adhesion of the paint is poor, and peeling occurs when the roll passes the plating process.
  • Silicone polyester epoxy resin is a main component of paint. Silicone polyester epoxy resins are excellent in heat resistance, excellent in slip properties, and excellent in stopping the molten plating solution.
  • the silicone polyester epoxy resin has an epoxy functional group, a polyester reactor and a silicon reactor. It is excellent in solvent resistance and adhesiveness by an epoxy functional group, excellent in bendability by a polyester reactor, and excellent in slip property and heat resistance by a silicon reactor.
  • Silicone polyesters are resins produced by the condensation reaction of bisphenol A with epichlorohydrin.
  • the silicone polyester is composed of aminosilane [NH 2 (CH) 2 NH-R-SI (OCH 3 ) 3 ], glycidyl alkyl silane [() in a resin produced by the condensation reaction of bisphenol A and epichlorohydrin. CH 2 —CH—O) CH 2 OR—Si (CH 3 ) 3 ], an amine and one or more selected from organosilanes capable of ring-opening reaction with a basic acid are reacted to synthesize a prepolymer, which is an intermediate of polyepoxy.
  • polyepoxypolyols including -OH group
  • monomers such as high, polyalcohols such as bisphenol A modified ethylene oxide, and general polyhydric alcohols (EG, 1.6-HD, NPG, DEG), a basic acid, sebacic acid, HHPA, TPA, PhAn to prepare a polyester reaction by one or more selected from.
  • monomers such as high, polyalcohols such as bisphenol A modified ethylene oxide, and general polyhydric alcohols (EG, 1.6-HD, NPG, DEG), a basic acid, sebacic acid, HHPA, TPA, PhAn
  • silicone polyester epoxy resin is less than 30 parts by weight, the heat resistance is lowered. If the silicone polyester epoxy resin is more than 55 parts by weight, the dispersion of the pigment is worsened and curing hardening occurs.
  • Butyl melamine resin is a cured resin.
  • Butyl melamine resin uses a butylate melamine resin of 60% solids to maximize the reactivity and crosslinking density.
  • the coating film is hardly cured. If the butylate melamine resin is more than 15 parts by weight, the coating film becomes excessively hard due to excessive curing, resulting in poor paintability and workability.
  • Inorganic pigments are included to impart the color of the coating, to improve the heat resistance and hardness of the coating and to control the gloss.
  • Inorganic pigments include black pigment, mica and silica.
  • the black pigment uses iron oxide black pigment.
  • the iron oxide black pigment is intended to give the color of the paint and to improve heat resistance.
  • Iron oxide is a black pigment mainly composed of iron oxide. If the iron oxide black pigment is less than 10 parts by weight, the heat resistance is lowered, and if it exceeds 30 parts by weight, the workability and workability are deteriorated.
  • Mica is contained as a extender pigment that enhances heat resistance and solids of paint. Mica uses micro mica. If the mica is less than 5 parts by weight, the heat resistance is lowered, and if it exceeds 15 parts by weight, the paintability is poor.
  • Silica is contained as a quencher for reducing the glossiness of a coating film.
  • Silica acts as a matting agent because of its large surface area per unit weight and its relatively high oil absorption. Glossiness of a coating film is adjusted according to content of silica, and when a silica is less than 1 weight part, glossiness is high, workability
  • Polyacrylate resin is used as a dispersant to disperse the pigments of the paint. If the polyacrylate resin is less than 0.3 part by weight, the pigment is not dispersed well and sedimentation of the paint occurs, and if it is 2 parts by weight or more, the compatibility with the silicone polyester epoxy resin becomes worse, resulting in appearance defects such as craters. .
  • a solvent is for melt
  • the method of manufacturing a plated composite steel sheet is a coating step of forming a coating layer by coating the above-described paint on one surface of the steel sheet, and forming a plating layer by performing the plating process by depositing the steel plate in a molten plating bath after forming a coating layer It includes a plating step.
  • the coating is applied to the steel sheet so that the dry coating thickness is 2 ⁇ 10 ⁇ m.
  • the coating of the paint is carried out before the heat treatment step of the plating step. This is to allow the paint to cure during the heat treatment process. Moreover, it is also possible to apply
  • plating is generally performed by immersing a steel plate in a plating bath to coat the plating composition on the surface.
  • the paint is applicable to various plated steel sheets such as hot dip galvanized steel sheet, alloyed hot dip galvanized steel sheet, zinc-aluminum alloy coated steel sheet, and aluminum plated steel sheet.
  • the manufactured coating plated composite steel sheet can be manufactured with a steel plate having various characteristics depending on the properties of the plating and coating materials, and since the coated surface is formed without a plating layer, only the coating layer is formed, thereby improving adhesion and shortening the coating process. Has an effect.
  • the plated coated composite steel plate can be used as a one-side molten plated steel sheet after removing the coating layer.
  • the coating layer is removed by a chemical method using chemicals or a mechanical method using polishing.
  • the plated composite steel sheet was manufactured by immersing in a hot dip bath. Thereafter, physical property evaluation results such as plating retardation of the coating layer and peelability by mechanical polishing are shown in Table 1 below.
  • the adhesion of the molten plating solution to the coating layer is on the front side.
  • the coating layer is not peeled off as a whole.
  • Comparative Example 1 there were many inorganic components of the water glass system, so that the peelability of the coating layer was low.
  • Comparative Example 6 the content of the silicone polyester epoxy resin was low, and there was partial adhesion of the molten plating solution to the coating layer.
  • Comparative Example 7 the content of the butylate melamine resin was high, so that it was difficult to remove the coating layer. This is because the curing is excessive and the coating film becomes hard.
  • Comparative Example 8 the content of the silicone polyester epoxy resin was high, and there was partial adhesion of the molten plating solution to the coating layer. This is because of a phenomenon in which the dispersion of paint is poor and the curing is insufficient.
  • the polyacrylate resin dispersant of Table 1 means a polyacrylate resin.
  • the photograph which showed the coating layer of the comparative example 1 is shown by (a) of FIG. 2, (b) is the photograph of the coating layer of Example 1 (A is coating material (painting layer), B is plating). It is a substance (plating solution).)
  • the plated layer is formed on one surface and the plated coating composite steel plate is formed only the coating layer is not formed on the other surface is possible.
  • the coating layer of the plated coated steel sheet can be easily removed by mechanical polishing.
  • the present invention can shorten the coating process, it can be seen that the steel sheet of various characteristics can be manufactured.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The present invention relates to a plated and coated laminated steel sheet, wherein a plating layer is formed on one side thereof, and a coating layer, including a paint containing a plating-inhibiting component for preventing the formation of another plating layer, is formed on the other side thereof. The plated and coated laminated steel sheet of the present invention is advantageous in that the process for coating same may be shortened, it may be used as a steel plate having various characteristics according to the material that is plated or coated, and it may even be used as a steel plate that is hot-dip galvanized on one side thereof due to the easy removal of the coating layer.

Description

도금 도장 복합강판Plating Painted Composite Steel Sheet
본 발명은 도금 도장 복합강판에 관한 것으로, 더욱 상세하게는 일면에는 도금층이 형성되고 타면에는 도금층 없이 도장층만 형성되게 한 도금 도장 복합강판에 관한 것이다. The present invention relates to a plated coating composite steel sheet, and more particularly, to a plated coating composite steel sheet in which a plating layer is formed on one surface and only a coating layer is formed on the other surface without a plating layer.
철은 지구에서 가장 흔한 금속으로 쉽고 값싸게 얻을 수 있어 활용범위가 넓다. 이러한 철은 여러가지 목적을 위해 대부분 얇은 판재의 형태인 강판으로 사용되는데, 대기 중에서 쉽게 부식되므로 부식과 녹 발생 방지를 목적으로 철 표면에 피막을 만드는 도금 공정이 수행된다. Iron is the most common metal on earth and can be obtained easily and inexpensively. Such iron is mostly used as a steel sheet in the form of a thin plate for various purposes, and since it is easily corroded in the air, a plating process is performed to form a film on the iron surface for the purpose of preventing corrosion and rust.
도금 공정에서 금속은 희생방식을 활용한 아연이 가장 많이 사용되고 있으며, 아연-알루미늄 합금 도금, 알루미늄 도금도 많이 사용된다. In the plating process, zinc using the sacrificial method is most frequently used, and zinc-aluminum alloy plating and aluminum plating are also widely used.
도금의 방식은 전기도금 방법과 용융도금 방법이 있다. Plating methods are electroplating and hot-dip plating.
전기도금 방법은 효율의 문제로 주로 아연도금에만 한정되므로 대부분의 도금제품은 용융도금을 실시하게 된다. 그러나, 강판을 용융도금 하는 경우에는 강판의 양면이 도금되므로 용도상 한면은 도금이 필요하지 않은 경우라도 양면이 도금되어 낭비가 발생된다. The electroplating method is mainly limited to zinc plating due to the problem of efficiency, so most plating products are subjected to hot dip plating. However, when the steel sheet is hot-plated, both sides of the steel plate are plated, so that even if one side is not required for plating, both sides are plated and waste is generated.
따라서, 본 발명의 목적은 상술한 문제점을 해결하기 위한 것으로, 용도상 한면에만 도금층을 형성하는 것이 가능하도록 일면에는 도금층이 형성되고 타면에는 도금층 없이 도장층만 형성되도록 한 도금 도장 복합강판을 제공하는 것이다.Accordingly, an object of the present invention is to solve the above-described problems, to provide a plated coating composite steel sheet so that the plated layer is formed on one side and only the coating layer is formed on the other side so that the plated layer can be formed on only one side. will be.
상기한 바와 같은 목적을 달성하기 위한 본 발명의 특징에 따르면, 본 발명은 일면에는 도금층이 형성되고, 타면에는 도금층이 없이 도장층이 형성된다.According to a feature of the present invention for achieving the above object, the present invention is a plating layer is formed on one surface, the coating layer is formed on the other surface without a plating layer.
상기 도장층은 실리콘 폴리에스테르 에폭시 수지, 부틸레이트 멜라민 수지, 블랙안료, 마이카, 실리카 성분을 포함한다.The coating layer includes a silicone polyester epoxy resin, a butylate melamine resin, a black pigment, a mica, and a silica component.
상기 도장층은 건조도막 두께가 2~10㎛이다.The coating layer has a dry coating thickness of 2 ~ 10㎛.
상기 도장층을 형성하는 도료는 도료 총 중량에 대하여 실리콘 폴리에스테르 에폭시 수지 30~55 중량부; 부틸레이트 멜라민 수지 5~15 중량부; 아이론 옥사이드 블랙안료 10~30 중량부; 마이카 5~15 중량부; 실리카 1~5 중량부; 폴리 아크릴레이트 수지 0.3~2 중량부; 및 상기 도료 총 중량인 100 중량부가 되도록 하는 잔량의 용제를 포함한다.The paint forming the coating layer is 30 to 55 parts by weight of a silicone polyester epoxy resin based on the total weight of the paint; 5-15 weight part of butyrate melamine resin; 10 to 30 parts by weight of iron oxide black pigment; 5-15 parts by weight of mica; 1 to 5 parts by weight of silica; 0.3 to 2 parts by weight of polyacrylate resin; And the remaining amount of the solvent to be 100 parts by weight of the total weight of the paint.
본 발명은 실리콘 폴리에스테르 에폭시 수지를 주성분으로 하는 도료를 이용하여 강판의 일면에 도장층을 형성함으로써 도금층이 형성되지 않도록 하는 것이 가능하다. 따라서, 일면에는 도금층이 형성되고, 타면에는 도금층 없이 도장층만 형성된 도금 도장 복합강판의 제조가 가능하다. According to the present invention, it is possible to prevent the plating layer from being formed by forming a coating layer on one surface of a steel sheet using a paint mainly composed of a silicone polyester epoxy resin. Therefore, a plated layer is formed on one surface, and a plated composite steel sheet in which only a coating layer is formed on the other surface can be manufactured.
이 경우 철과 도장층의 밀착성이 우수하여 도장을 위한 별도의 전처리를 요구하지 않는다. 따라서, 도장공정을 단축시킬 수 있는 효과가 있다. In this case, the adhesion between the iron and the coating layer is excellent and does not require a separate pretreatment for painting. Therefore, there is an effect that can shorten the coating process.
또한, 본 발명의 도금 도장 복합강판은 기계적 연마에 의해 도장층의 제거가 가능하다. 따라서, 다양한 특성의 강판으로 활용이 가능한 효과가 있다.In addition, the coated coating steel sheet of the present invention can be removed by the mechanical polishing. Therefore, there is an effect that can be utilized as a steel sheet of various characteristics.
도 1은 본 발명의 도금 도장 복합강판을 제조하는 순서를 보인 개략도.1 is a schematic view showing a procedure for producing a plated coated steel sheet of the present invention.
도 2의 (a)는 비교예 1의 도장층을 보인 사진이고, (b)는 실시예 1의 도장층을 보인 사진. (A) is a photograph which shows the coating layer of the comparative example 1, (b) is a photograph which shows the coating layer of Example 1. FIG.
이하 본 발명의 바람직한 실시예를 상세하게 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail.
본 발명의 도금 도장 복합강판은 일면에는 도금층이 형성되고, 타면에는 도금층이 형성되지 않도록 도금저지 성분을 갖는 도료가 도장된 도장층이 형성된다.In the plating coating composite steel sheet of the present invention, a plating layer is formed on one surface, and a coating layer coated with a paint having a plating inhibiting component is formed on the other surface so that the plating layer is not formed.
구체적으로, 도금 공정 이전에 도금을 원하지 않는 면에 도장을 실시하고 도금 공정을 수행하여 도장되지 않은 면에만 도금이 되도록 하는 것이다. Specifically, before the plating process, the coating is performed on a surface which is not desired to be plated, and the plating process is performed so that only the unpainted surface is plated.
도금 공정은 용융 도금 공정을 채용한다. 용융 도금의 경우 강판이 용융 도금액에 담궈졌다가 나오게 된다. 따라서 도장층은 용융 도금액이 묻지 않아야 하며, 고온의 열에 견딜 수 있는 내열성도 요구된다. 내열성은 고온의 열에 견딜수 있는 성질을 의미하는 것으로, 용융 도금 공정이 도금 전에 강판의 기계적 성질 및 강판 표면의 환원분위기 유지를 위해 고온의 열처리를 실시하므로 요구되는 것이다. The plating process adopts a hot dip plating process. In the case of hot-dip plating, the steel sheet is immersed in the molten plating solution and then released. Therefore, the coating layer should not be immersed in the molten plating solution, and heat resistance that can withstand high temperature heat is also required. Heat resistance means a property that can withstand high temperature heat, and the hot-dip plating process is required because the high temperature heat treatment is performed to maintain the mechanical properties of the steel sheet and the reducing atmosphere of the steel sheet surface before plating.
물론, 도금 공정 후 도장을 수행하여 도금층 상부에 도장층을 형성할 수도 있다. 이 경우 내식성 확보에는 효과적이나, 도장층만으로도 내식성 방지 효과가 충분한 경우 원가적 손실을 감수해야 한다. 또한, 도장층은 철 보다는 도금층과 밀착성이 열위하므로 이를 개선하기 위해 도장 전 별도의 전처리를 해야하는 공정이 추가되는 문제점도 있다.Of course, the coating may be performed after the plating process to form a coating layer on the plating layer. In this case, it is effective to secure corrosion resistance, but if the coating layer alone is sufficient to prevent corrosion resistance, the cost should be lost. In addition, the coating layer is inferior in adhesion with the plating layer rather than iron, there is also a problem that a separate pretreatment process before the coating is added to improve this.
따라서, 도 1에 도시된 바와 같은 도장, 도금 순서에 의해 일면에는 도금층이 형성되고, 타면에는 도금층 없이 도장층이 형성된 도장 도금 복합강판을 제조한다. Therefore, a plating layer is formed on one surface by a painting and plating sequence as shown in FIG. 1, and a coating plating composite steel sheet having a coating layer is formed on the other surface without a plating layer.
도장층의 성분은 실리콘 폴리에스테르 에폭시 수지, 부틸레이트 멜라민 수지, 블랙안료, 마이카, 실리카를 포함한다. The components of the coating layer include silicone polyester epoxy resins, butyrate melamine resins, black pigments, mica and silica.
구체적으로, 도장층은 실리콘 폴리에스테르 에폭시 수지, 부틸레이트 멜라민 수지, 블랙안료, 마이카, 실리카를 포함하는 도료에 의해 형성된다. Specifically, the coating layer is formed of a paint comprising a silicone polyester epoxy resin, a butylate melamine resin, a black pigment, a mica, and a silica.
여기서, 도장층의 주성분은 실리콘 폴리에스테르 에폭시 수지이다. 실리콘 폴리에스테르 에폭시 수지의 Si성분이 도막의 표면장력을 낮추어 도금되는 물질들이 도장층에 달라붙지 못하도록 한다. 따라서 도금층 없이 도장층이 형성된 도장 도금 복합강판의 제조가 가능하다.Here, the main component of the coating layer is a silicone polyester epoxy resin. The Si component of the silicone polyester epoxy resin lowers the surface tension of the coating film to prevent the materials to be plated from sticking to the coating layer. Therefore, it is possible to manufacture a coated plating composite steel sheet having a coating layer without a plating layer.
도장층을 형성하는 도료는, 도료 총 중량에 대하여 The paint forming the coating layer is based on the total weight of the paint.
실리콘 폴리에스테르 에폭시 수지 30~55 중량부, 부틸레이트 멜라민 수지 5~15 중량부, 아이론 옥사이드 블랙안료 10~30 중량부, 마이카 5~15 중량부, 실리카 1~5 중량부 및 전체 도료 총 중량인 100 중량부가 되도록 하는 잔량의 용제를 포함한다. 이때, 전체 도료 총 중량인 100 중량부가 되도록 하는 잔량의 용제는 10~20 중량부이다. 30 to 55 parts by weight of silicone polyester epoxy resin, 5 to 15 parts by weight of butylate melamine resin, 10 to 30 parts by weight of iron oxide black pigment, 5 to 15 parts by weight of mica, 1 to 5 parts by weight of silica and the total weight of the paint It contains a residual amount of solvent to make 100 parts by weight. At this time, the remaining amount of the solvent to be 100 parts by weight of the total weight of the paint is 10 to 20 parts by weight.
도료에는 안료 분산을 위하여 폴리 아크릴레이트 수지가 더 포함된다. 폴리 아크릴레이트 수지는 도료 총 중량에 대하여 0.3~2 중량부 범위로 포함된다.The paint further contains a poly acrylate resin for pigment dispersion. The poly acrylate resin is included in the range of 0.3 to 2 parts by weight based on the total weight of the paint.
도료는 용융 도금액의 저지성이 우수한 실리콘 폴리에스테르 에폭시 수지에 경화를 위한 멜라민 수지, 내열성을 부여하는 무기안료를 배합한 것으로, 용융 도금액의 부착 저지 효과가 우수하다.The coating material is a silicone polyester epoxy resin excellent in blocking the molten plating liquid and a melamine resin for curing and an inorganic pigment providing heat resistance, and is excellent in preventing the adhesion of the molten plating liquid.
도장층은 건조도막 두께가 2~10㎛이다. 건조도막 두께는 2㎛ 미만이면 도금 저지 효과가 충분하지 않아 원하는 목적을 달성하기 어렵고, 10㎛를 초과하면 도료의 밀착성이 떨어져 도금공정의 롤 통과시 박리가 발생하게 된다. The coating layer has a dry coating thickness of 2 to 10 µm. If the dry coating thickness is less than 2 μm, the effect of preventing the plating is insufficient, and thus it is difficult to achieve the desired purpose. If the dry coating thickness is more than 10 μm, the adhesion of the paint is poor, and peeling occurs when the roll passes the plating process.
도료를 이루는 구성 성분들의 기능 및 함량의 한정이유에 대해 설명한다.The reason for limitation of function and content of the constituents of the paint will be described.
1.실리콘 폴리에스테르 에폭시 수지1.silicone polyester epoxy resin
실리콘 폴리에스테르 에폭시 수지는 도료의 주성분이다. 실리콘 폴리에스테르 에폭시 수지는 내열성이 우수하고 슬립성이 뛰어나며, 용융 도금액의 저지성이 우수하다. Silicone polyester epoxy resin is a main component of paint. Silicone polyester epoxy resins are excellent in heat resistance, excellent in slip properties, and excellent in stopping the molten plating solution.
실리콘 폴리에스테르 에폭시 수지는 에폭시 관능기, 폴리에스테르 반응기, 실리콘 반응기를 가진다. 에폭시 관능기에 의해 내용제성, 밀착성이 우수하고, 폴리에스테르 반응기에 의해 굴곡성이 우수하며, 실리콘 반응기에 의해 슬립성과 내열성이 우수하다.The silicone polyester epoxy resin has an epoxy functional group, a polyester reactor and a silicon reactor. It is excellent in solvent resistance and adhesiveness by an epoxy functional group, excellent in bendability by a polyester reactor, and excellent in slip property and heat resistance by a silicon reactor.
실리콘 폴리에스테르는 비스페놀 A와 에피클로로 하이드린의 축합반응에서 만들어진 수지이다. Silicone polyesters are resins produced by the condensation reaction of bisphenol A with epichlorohydrin.
보다 상세하게는, 실리콘 폴리에스테르는 비스페놀 A와 에피클로로 하이드린의 축합반응에서 만들어진 수지에 아미노실란[NH2(CH)2NH-R-SI(OCH3)3], 그리시딜 알킬 실란[(CH2-CH-O)CH2O-R-Si(CH3)3], 아민과 염기산으로 반응 개환이 가능한 유기실란 중 선택된 1종 이상을 반응시켜 폴리에폭시의 중간체인 프리포릴머를 합성한다. More specifically, the silicone polyester is composed of aminosilane [NH 2 (CH) 2 NH-R-SI (OCH 3 ) 3 ], glycidyl alkyl silane [() in a resin produced by the condensation reaction of bisphenol A and epichlorohydrin. CH 2 —CH—O) CH 2 OR—Si (CH 3 ) 3 ], an amine and one or more selected from organosilanes capable of ring-opening reaction with a basic acid are reacted to synthesize a prepolymer, which is an intermediate of polyepoxy.
이 후 이 프리포릴머에 하이와 같은 단량체들과 합성을 이루어 개환반응된 폴리에폭시폴리올(-OH기 포함), 비스페놀A변성 에칠렌 옥사이드인 다가알콜, 일반 다가알콜(EG,1.6-HD,NPG,DEG), 염기산인 세바식산, HHPA, TPA, PhAn 중 선택된 1종 이상으로 폴리에스테르 반응시켜 합성하여 제조한다. Afterwards, polyepoxypolyols (including -OH group) were ring-opened and reacted with monomers such as high, polyalcohols such as bisphenol A modified ethylene oxide, and general polyhydric alcohols (EG, 1.6-HD, NPG, DEG), a basic acid, sebacic acid, HHPA, TPA, PhAn to prepare a polyester reaction by one or more selected from.
실리콘 폴리에스테르 에폭시 수지는 30 중량부 미만이면 내열성이 저하되고, 55 중량부를 초과하면 안료의 분산이 나빠지고 경화 부족현상이 발생하게 된다.If the silicone polyester epoxy resin is less than 30 parts by weight, the heat resistance is lowered. If the silicone polyester epoxy resin is more than 55 parts by weight, the dispersion of the pigment is worsened and curing hardening occurs.
2.부틸레이트 멜라민 수지 2. Butyrate melamine resin
부틸레이트 멜라민 수지는 경화수지이다. Butyl melamine resin is a cured resin.
부틸레이트 멜라민 수지는 반응성과 가교밀도를 극대화 시킬수 있도록, 고형분이 60%인 부틸레이트 멜라민 수지를 사용한다. Butyl melamine resin uses a butylate melamine resin of 60% solids to maximize the reactivity and crosslinking density.
부틸레이트 멜라민 수지는 5 중량부 미만이면 도막의 경화가 잘 이루어지지 않고, 15 중량부를 초과하면 경화가 과도하여 도막이 딱딱해져 도장성이 나빠지고 가공성이 저하된다.If the butylate melamine resin is less than 5 parts by weight, the coating film is hardly cured. If the butylate melamine resin is more than 15 parts by weight, the coating film becomes excessively hard due to excessive curing, resulting in poor paintability and workability.
3.무기안료3.Inorganic Pigment
무기안료는 도막의 색상을 부여하고, 도막의 내열성과 경도를 향상시키며, 광택을 조절하기 위해 함유된다. 무기안료는 블랙안료, 마이카, 실리카 3가지를 사용한다. Inorganic pigments are included to impart the color of the coating, to improve the heat resistance and hardness of the coating and to control the gloss. Inorganic pigments include black pigment, mica and silica.
블랙안료는 아이론 옥사이드 블랙안료를 사용한다. 아이론 옥사이드 블랙안료는 도료의 색상을 부여하고 내열성을 높이기 위한 것이다. 아이론 옥사이드는 블랙안료는 아이론 옥사이드를 주성분으로 한다. 아이론 옥사이드 블랙안료는 10 중량부 미만이면 내열성이 저하되고 30 중량부를 초과하면 가공성과 작업성이 나빠진다.The black pigment uses iron oxide black pigment. The iron oxide black pigment is intended to give the color of the paint and to improve heat resistance. Iron oxide is a black pigment mainly composed of iron oxide. If the iron oxide black pigment is less than 10 parts by weight, the heat resistance is lowered, and if it exceeds 30 parts by weight, the workability and workability are deteriorated.
마이카는 내열성과 도료의 고형분을 높이는 체질안료로 함유된다. 마이카는 마이크로 마이카를 사용한다. 마이카는 5 중량부 미만이면 내열성이 저하되고, 15 중량부를 초과하면 도장성이 나빠진다.Mica is contained as a extender pigment that enhances heat resistance and solids of paint. Mica uses micro mica. If the mica is less than 5 parts by weight, the heat resistance is lowered, and if it exceeds 15 parts by weight, the paintability is poor.
실리카는 도막의 광택을 저하시키기 위한 소광제로 함유된다. 실리카는 단위 무게당 표면적이 넓어서 상대적으로 흡유량이 크기 때문에 소광제 역할을 한다. 실리카의 함유량에 따라 도막의 광택이 조절되며, 실리카는 1 중량부 미만이면 광택이 높아 작업성 및 도막의 경도가 저하되고, 5 중량부를 초과하면 가공성이 나빠진다.Silica is contained as a quencher for reducing the glossiness of a coating film. Silica acts as a matting agent because of its large surface area per unit weight and its relatively high oil absorption. Glossiness of a coating film is adjusted according to content of silica, and when a silica is less than 1 weight part, glossiness is high, workability | liquidity and hardness of a coating film fall, and when it exceeds 5 weight part, workability worsens.
4. 폴리 아크릴레이트 수지4. Polyacrylate Resin
*폴리 아크릴레이트 수지는 상기 도료의 안료들을 분산시키기 위하여 분산제로 사용된다. 폴리 아크릴레이트 수지는 0.3 중량부 미만이면 안료의 분산이 잘 되지 않아 도료의 침강이 발생하고, 2 중량부 이상이면 실리콘 폴리에스테리 에폭시 수지와의 상용성이 나빠져 크레이터 등의 외관 결함이 발생하게 된다. Polyacrylate resin is used as a dispersant to disperse the pigments of the paint. If the polyacrylate resin is less than 0.3 part by weight, the pigment is not dispersed well and sedimentation of the paint occurs, and if it is 2 parts by weight or more, the compatibility with the silicone polyester epoxy resin becomes worse, resulting in appearance defects such as craters. .
5. 용제5. Solvent
용제는 상술한 폴리에스테르 에폭시 수지, 멜라민 수지, 무기안료를 용해하기 위한 것이다. 용제는 10 중량부 미만이면 도료(도료)의 유동성 확보가 어려워 균일한 도막 두께 확보가 어렵고, 20 중량부를 초과하면 도포성이 저하된다. 이때, 용제의 함량은 전체 도료 총 중량인 100 중량부가 되도록 하는 잔량의 용제이다. A solvent is for melt | dissolving the polyester epoxy resin, melamine resin, and inorganic pigment which were mentioned above. If the solvent is less than 10 parts by weight, it is difficult to secure the fluidity of the coating (paint), so that it is difficult to secure a uniform coating film thickness. At this time, the content of the solvent is the remaining amount of the solvent to be 100 parts by weight, the total weight of the paint.
한편, 도금 도장 복합강판의 제조방법은 상술한 도료를 강판의 일면에 도장하여 도장층을 형성하는 도장단계와, 도장층 형성 후 용융 도금욕에 상기 강판을 침적하여 도금 공정을 수행함으로써 도금층을 형성하는 도금단계를 포함한다. On the other hand, the method of manufacturing a plated composite steel sheet is a coating step of forming a coating layer by coating the above-described paint on one surface of the steel sheet, and forming a plating layer by performing the plating process by depositing the steel plate in a molten plating bath after forming a coating layer It includes a plating step.
도장단계에서, 도료는 건조도막 두께가 2~10㎛이 되도록 강판에 도장을 수행한다. In the coating step, the coating is applied to the steel sheet so that the dry coating thickness is 2 ~ 10㎛.
도료의 도장은 도금단계의 열처리 공정 이전에 실시한다. 이는 열처리 공정 중 도료가 경화되도록 하기 위함이다. 또한, 도료의 도장을 실시한 후 다른 도금 공정에 투입하는 것도 가능하다. 단, 다른 도금 공정에 투입하는 경우에는 완전 경화를 위하여 강판의 표면온도가 200℃이상이 되도록 가열해야 한다.The coating of the paint is carried out before the heat treatment step of the plating step. This is to allow the paint to cure during the heat treatment process. Moreover, it is also possible to apply | coat to another plating process after apply | coating paint. However, in the case of other plating process, the surface temperature of the steel sheet should be heated to 200 ℃ or more for complete curing.
도금 단계에서, 도금은 도금욕에 강판을 침지하여 표면에 도금 조성물을 피복하는 것으로 일반적인 용융 도금 공정을 채택하면 된다. In the plating step, plating is generally performed by immersing a steel plate in a plating bath to coat the plating composition on the surface.
도료는 용융아연 도금강판, 합금화 용융아연 도금강판, 아연-알루미늄 합금 도금강판, 알루미늄 도금강판 등 다양한 도금강판에 적용가능하다.The paint is applicable to various plated steel sheets such as hot dip galvanized steel sheet, alloyed hot dip galvanized steel sheet, zinc-aluminum alloy coated steel sheet, and aluminum plated steel sheet.
제조된 도장 도금 복합강판은 도금, 도장되는 물질의 특성에 따라 다양한 특성을 갖는 강판으로 제조가 가능하며, 도장된 면은 도금층이 없이 도장층만 형성되므로 밀착성 향상과 함께 도장공정 또한 단축시킬 수 있는 효과를 갖는다.The manufactured coating plated composite steel sheet can be manufactured with a steel plate having various characteristics depending on the properties of the plating and coating materials, and since the coated surface is formed without a plating layer, only the coating layer is formed, thereby improving adhesion and shortening the coating process. Has an effect.
한편, 제조된 도금 도장 복합강판은 도장층을 제거한 후 편면용융 도금강판으로 사용가능하다. 이 경우 도장층을 약품을 이용한 화학적 방법이나 연마를 이용한 기계적 방법에 의해 제거한다. On the other hand, the plated coated composite steel plate can be used as a one-side molten plated steel sheet after removing the coating layer. In this case, the coating layer is removed by a chemical method using chemicals or a mechanical method using polishing.
그러나 화학적인 방법은 도료에 대해서만 선택적으로 적용하기가 어려울 뿐만 아니라 작업도 위험하다. 따라서 기계적으로 연마를 하는 것이 타당하다. 기계적인 연마는 브러쉬(Brush)나 벨트(Belt) 연마재를 이용하여 연속적으로 강판의 도료를 제거하게 된다. 이 경우 도장층은 도장층을 형성한 도료의 특성상 연마에 의해서도 쉽게 제거된다.However, chemical methods are not only difficult to apply selectively to paints, but also dangerous work. Therefore, it is reasonable to polish mechanically. Mechanical polishing uses brush or belt abrasive to continuously remove paint from the steel sheet. In this case, the coating layer is easily removed by polishing due to the characteristics of the paint on which the coating layer is formed.
이하, 본 발명을 하기 실시예 및 비교예에 의해 상세히 설명한다.Hereinafter, the present invention will be described in detail by the following examples and comparative examples.
그러나 하기 실시예 및 비교예는 본 발명을 예시하는 것일 뿐, 본 발명이 하기 실시예와 비교예에 의해 한정되는 것은 아니다. However, the following Examples and Comparative Examples are only illustrative of the present invention, the present invention is not limited by the following Examples and Comparative Examples.
시험예 1: 도장층의 도금 저지성 및 박리성 실험Test Example 1 Plating Retardance and Peelability Test of Coating Layer
표 1과 같은 도료 성분 및 도막 두께(또는 도포량)으로 강판의 일면을 도장한 후 용융 도금욕에 침지하여 도금 도장 복합강판을 제조하였다. 이 후, 도장층의 도금 저지성과 기계적 연마에 의한 박리성 등의 물성평가 결과를 하기의 표 1에 나타내었다.After coating one surface of the steel sheet with a coating component and a coating film thickness (or coating amount) as shown in Table 1, the plated composite steel sheet was manufactured by immersing in a hot dip bath. Thereafter, physical property evaluation results such as plating retardation of the coating layer and peelability by mechanical polishing are shown in Table 1 below.
[도장층의 도금 저지성 평가 기준][Evaluation Criteria for Plating Retardance of Coating Layer]
○: 도장층에 용융 도금액의 부착이 없음.(Circle): There is no adhesion of a molten plating liquid to a coating layer.
△: 도장층에 용융 도금액의 부착이 일부분 있음.(Triangle | delta): A part of adhesion of a molten plating liquid exists in a coating layer.
X: 도장층에 융용 도금액의 부착이 전면에 있음.X: The adhesion of the molten plating solution to the coating layer is on the front side.
[도장층 박리성 평가 기준]_기계적 연마에 의한 박리 정도 측정[Coating layer peelability evaluation criteria] _ measurement of peeling degree by mechanical polishing
○: 전면적으로 도장층이 박리됨.(Circle): A coating layer peels on the whole surface.
△: 부분적으로 도장층이 박리 안됨.(Triangle | delta): The coating layer does not peel partly.
X: 전체적으로 도장층이 박리 안됨.X: The coating layer is not peeled off as a whole.
표 1
도료 성분 도장층도막 두께 또는 도료 도포량 도장층도금 저지성 도장층박리성 비고
MgO 10g, 물유리 10g, NaOH 4gH3BO3 6g, TiO2 3g 50g/㎡ △ X 비교예1
Mg(OH)2 14g, K2SiO2 6g, KOH 6gH3BO3 5g, TiO2 4g 50g/㎡ △ X 비교예2
MgO 2.5g, Mg(OH)2 10.5g, Na2OSiO2 4g NaOH 5g, H3BO3 7g, Ti(OH)4 6g 50g/㎡ △ X 비교예3
실리콘 폴리에스테르 에폭시 수지 35 중량부부틸레이트 멜라민 수지 10 중량부아이론 옥사이드 블랙안료 30 중량부마이크로 마이카 10 중량부실리카 4 중량부폴리 아크릴레이트 수지 분산제 1 중량부용제 10 중량부 1㎛ △ ○ 비교예4
실리콘 폴리에스테르 에폭시 수지 35 중량부부틸레이트 멜라민 수지 10 중량부아이론 옥사이드 블랙안료 30 중량부마이크로 마이카 10 중량부실리카 4 중량부폴리 아크릴레이트 수지 분산제 1 중량부용제 10 중량부 4㎛ ○ ○ 실시예1
실리콘 폴리에스테르 에폭시 수지 35 중량부부틸레이트 멜라민 수지 10 중량부아이론 옥사이드 블랙안료 30 중량부마이크로 마이카 10 중량부실리카 4 중량부폴리 아크릴레이트 수지 분산제 1 중량부용제 10 중량부 10㎛ ○ ○ 실시예2
실리콘 폴리에스테르 에폭시 수지 35 중량부부틸레이트 멜라민 수지 10 중량부아이론 옥사이드 블랙안료 30 중량부마이크로 마이카 10 중량부실리카 4 중량부폴리 아크릴레이트 수지 분산제 1 중량부용제 10 중량부 15㎛ △ △ 비교예5
실리콘 폴리에스테르 에폭시 수지 45 중량부부틸레이트 멜라민 수지 15 중량부아이론 옥사이드 블랙안료 15 중량부마이크로 마이카 10 중량부실리카 5 중량부폴리 아크릴레이트 수지 분산제 0.5 중량부용제 9.5 중량부 4㎛ ○ ○ 실시예3
실리콘 폴리에스테르 에폭시 수지 25 중량부부틸레이트 멜라민 수지 15 중량부아이론 옥사이드 블랙안료 30 중량부마이크로 마이카 15 중량부실리카 5 중량부폴리 아크릴레이트 수지 분산제 2 중량부용제 8 중량부 4㎛ △ ○ 비교예6
실리콘 폴리에스테르 에폭시 수지 35 중량부부틸레이트 멜라민 수지 15 중량부아이론 옥사이드 블랙안료 10 중량부마이크로 마이카 15 중량부실리카 5 중량부폴리 아크릴레이트 수지 분산제 2 중량부용제 18 중량부 6㎛ ○ ○ 실시예4
실리콘 폴리에스테르 에폭시 수지 40 중량부부틸레이트 멜라민 수지 20 중량부아이론 옥사이드 블랙안료 15 중량부마이크로 마이카 10 중량부실리카 4 중량부폴리 아크릴레이트 수지 분산제 1 중량부용제 10 중량부 6㎛ ○ △ 비교예7
실리콘 폴리에스테르 에폭시 수지 60 중량부부틸레이트 멜라민 수지 10 중량부아이론 옥사이드 블랙안료 10 중량부마이크로 마이카 5 중량부실리카 5 중량부폴리 아크릴레이트 수지 분산제 0.5 중량부용제 9.5 중량부 6㎛ △ ○ 비교예8
실리콘 폴리에스테르 에폭시 수지 45중량부부틸레이트 멜라민 수지 3 중량부아이론 옥사이드 블랙안료 15 중량부마이크로 마이카 15 중량부실리카 5 중량부폴리 아크릴레이트 수지 분산제 1 중량부용제 16 중량부 6㎛ △ ○ 비교예9
Table 1
Paint ingredients Coating layer thickness or coating amount Coating Layer Plating Resistance Peeling Paint Remarks
MgO 10g, Waterglass 10g, NaOH 4gH 3 BO 3 6g, TiO 2 3g 50g / ㎡ △ X Comparative Example 1
Mg (OH) 2 14g, K 2 SiO 2 6g, KOH 6gH 3 BO 3 5g, TiO 2 4g 50g / ㎡ △ X Comparative Example 2
MgO 2.5g, Mg (OH) 2 10.5g, Na 2 OSiO 2 4g NaOH 5g, H 3 BO 3 7g, Ti (OH) 4 6g 50g / ㎡ △ X Comparative Example 3
Silicone polyester epoxy resin 35 parts by weight Butylate melamine resin 10 parts by weight Iron oxide black pigment 30 parts by weight Micro mica 10 parts by weight Silica 4 parts by weight Polyacrylate resin dispersant 1 part by weight Solvent 10 parts by weight 1 μm △ ○ Comparative Example 4
Silicone polyester epoxy resin 35 parts by weight Butylate melamine resin 10 parts by weight Iron oxide black pigment 30 parts by weight Micro mica 10 parts by weight Silica 4 parts by weight Polyacrylate resin dispersant 1 part by weight Solvent 10 parts by weight 4㎛ ○ ○ Example 1
Silicone polyester epoxy resin 35 parts by weight Butylate melamine resin 10 parts by weight Iron oxide black pigment 30 parts by weight Micro mica 10 parts by weight Silica 4 parts by weight Polyacrylate resin dispersant 1 part by weight Solvent 10 parts by weight 10 μm ○ ○ Example 2
Silicone polyester epoxy resin 35 parts by weight Butylate melamine resin 10 parts by weight Iron oxide black pigment 30 parts by weight Micro mica 10 parts by weight Silica 4 parts by weight Polyacrylate resin dispersant 1 part by weight Solvent 10 parts by weight 15 μm △ △ Comparative Example 5
Silicone polyester epoxy resin 45 parts by weight Butylate melamine resin 15 parts by weight Iron oxide black pigment 15 parts by weight Micro mica 10 parts by weight Silica 5 parts by weight Poly acrylate resin dispersant 0.5 parts by weight Solvent 9.5 parts by weight 4㎛ ○ ○ Example 3
Silicone polyester epoxy resin 25 parts by weight Butylate melamine resin 15 parts by weight Iron oxide black pigment 30 parts by weight Micro mica 15 parts by weight Silica 5 parts by weight Poly acrylate resin dispersant 2 parts by weight Solvent 8 parts by weight 4㎛ △ ○ Comparative Example 6
Silicone polyester epoxy resin 35 parts by weight Butylate melamine resin 15 parts by weight Iron oxide black pigment 10 parts by weight Micro mica 15 parts by weight Silica 5 parts by weight Poly acrylate resin dispersant 2 parts by weight Solvent 18 parts by weight 6 μm ○ ○ Example 4
Silicone polyester epoxy resin 40 parts by weight Butylate melamine resin 20 parts by weight Iron oxide black pigment 15 parts by weight Micro mica 10 parts by weight Silica 4 parts by weight Polyacrylate resin dispersant 1 part by weight Solvent 10 parts by weight 6 μm ○ △ Comparative Example 7
Silicone polyester epoxy resin 60 parts by weight Butylate melamine resin 10 parts by weight Iron oxide black pigment 10 parts by weight Micro mica 5 parts by weight Silica 5 parts by weight Poly acrylate resin dispersant 0.5 parts by weight Solvent 9.5 parts by weight 6 μm △ ○ Comparative Example 8
Silicone polyester epoxy resin 45 parts by weight Butylate melamine resin 3 parts by weight Iron oxide black pigment 15 parts by weight Micro mica 15 parts by weight Silica 5 parts by weight Poly acrylate resin dispersant 1 part by weight Solvent 16 parts by weight 6 μm △ ○ Comparative Example 9
상기 표 1에 나타난 결과와 같이, 본 발명의 도료를 사용하여 강판 표면에 2~10㎛ 도막두께를 갖는 도장층을 형성하는 경우 도금 저지성이 우수하여 도장 도금 복합강판의 제조가 가능함을 알 수 있다. 또한, 기계적 연마에 의한 도장층의 박리성도 우수한 것을 확인하였다.As shown in Table 1, when the coating layer having a coating film thickness of 2 ~ 10㎛ on the surface of the steel sheet using the coating of the present invention it can be seen that it is possible to manufacture the coating plating composite steel sheet with excellent plating resistance have. Moreover, it was confirmed that the peelability of the coating layer by mechanical polishing was also excellent.
비교예 1 내지 비교예 3은 도장층의 용융 도금액 부착 저지 효과가 미흡하고 도포 두께가 두껍고 단단하여 최종적으로 도장층의 제거가 어려웠다.In Comparative Examples 1 to 3, the effect of preventing the adhesion of the molten plating solution to the coating layer was insufficient, and the coating thickness was thick and hard, so that it was difficult to finally remove the coating layer.
특히, 비교예 1의 경우 물유리 계통의 무기계 성분들이 많아 도장층의 박리성이 낮았다. In particular, in Comparative Example 1, there were many inorganic components of the water glass system, so that the peelability of the coating layer was low.
비교예 6은 실리콘 폴리에스테르 에폭시 수지의 함량이 낮아 도장층에 용융 도금액의 부착이 일부분 있었다. In Comparative Example 6, the content of the silicone polyester epoxy resin was low, and there was partial adhesion of the molten plating solution to the coating layer.
비교예 7은 부틸레이트 멜라민 수지의 함량이 높아 도장층의 제거가 어려웠다. 이는 경화가 과도하여 도막이 딱딱해진 때문이다.In Comparative Example 7, the content of the butylate melamine resin was high, so that it was difficult to remove the coating layer. This is because the curing is excessive and the coating film becomes hard.
비교예 8은 실리콘 폴리에스테르 에폭시 수지의 함량이 높아 도장층에 용융 도금액의 부착이 일부분 있었다. 이는 도료의 분산이 나빠지고 경화가 부족한 현상 때문이다. In Comparative Example 8, the content of the silicone polyester epoxy resin was high, and there was partial adhesion of the molten plating solution to the coating layer. This is because of a phenomenon in which the dispersion of paint is poor and the curing is insufficient.
비교예 9는 부틸레이트 멜라민 수지의 함량이 높아 도장층의 도금 저지성이 나빴다. 이는 도막의 경화가 잘 이루어지지 않았기 때문이다.In Comparative Example 9, the content of the butyrate melamine resin was high, and the plating retardation of the coating layer was poor. This is because hardening of the coating film was not performed well.
참고로, 표 1의 폴리 아크릴레이트 수지 분산제는 폴리 아크릴레이트 수지를 의미한다.For reference, the polyacrylate resin dispersant of Table 1 means a polyacrylate resin.
도 2의 (a)에는 비교예 1의 도장층을 보인 사진이 도시되어 있고, (b)는 실시예 1의 도장층 사진이 도시되어 있다.(A는 도료(도장층)이고, B는 도금물질(도금액)이다.)The photograph which showed the coating layer of the comparative example 1 is shown by (a) of FIG. 2, (b) is the photograph of the coating layer of Example 1 (A is coating material (painting layer), B is plating). It is a substance (plating solution).)
도 2에 도시된 바에 의하면, 비교예 1의 경우 도장층에 용융 도금액의 부착이 전면에 있고, 실시예 1의 경우 도장층에 용융 도금액의 부착이 없이 도장층만 형성되었다. As shown in FIG. 2, in Comparative Example 1, the adhesion of the molten plating liquid to the coating layer was on the entire surface, and in Example 1, only the coating layer was formed without adhesion of the molten plating liquid to the coating layer.
상기 실험 결과에 의하면, 일면에는 도금층이 형성되고 타면에는 도금층이 형성되지 않도록 도장층만 형성된 도금 도장 복합강판의 제조가 가능하다. 또한, 도금 도장 복합강판의 도장층은 기계적 연마에 의해서 쉽게 제거가 가능하다 According to the results of the experiment, the plated layer is formed on one surface and the plated coating composite steel plate is formed only the coating layer is not formed on the other surface is possible. In addition, the coating layer of the plated coated steel sheet can be easily removed by mechanical polishing.
따라서 본 발명은 도장 공정을 단축시킬 수 있으며, 다양한 특성의 강판 제조가 가능함을 알 수 있다.Therefore, the present invention can shorten the coating process, it can be seen that the steel sheet of various characteristics can be manufactured.
본 발명의 권리는 위에서 설명된 실시예에 한정되지 않고 청구범위에 기재된 바에 의해 정의되며, 본 발명의 기술분야에서 통상의 지식을 가진 자가 청구범위에 기재된 권리범위 내에서 다양한 변형과 개작을 할 수 있다는 것은 자명하다.The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and various changes and modifications can be made by those skilled in the art within the scope of the claims. It is self-evident.

Claims (4)

  1. 일면에는 도금층이 형성되고, One surface is formed with a plating layer,
    타면에는 도금층이 없이 도장층만 형성된 것을 특징으로 하는 도금 도장 복합강판. Plating coating composite steel sheet, characterized in that only the coating layer formed on the other side without the plating layer.
  2. 청구항 1에 있어서, The method according to claim 1,
    상기 도장층은 The coating layer
    실리콘 폴리에스테르 에폭시 수지, 부틸레이트 멜라민 수지, 블랙안료, 마이카, 실리카 성분을 포함하는 것을 특징으로 하는 도금 도장 복합강판.Plating coating composite steel sheet comprising a silicone polyester epoxy resin, butyrate melamine resin, black pigment, mica, silica component.
  3. 청구항 2에 있어서,The method according to claim 2,
    상기 도장층은 The coating layer
    건조도막 두께가 2~10㎛인 것을 특징으로 하는 도금 도장 복합강판. Plating coating composite steel sheet, characterized in that the dry coating thickness is 2 ~ 10㎛.
  4. 청구항 2 또는 청구항 3에 있어서, The method according to claim 2 or 3,
    상기 도장층을 형성하는 도료는 The paint forming the coating layer is
    도료 총 중량에 대하여 About the paint total weight
    실리콘 폴리에스테르 에폭시 수지 30~55 중량부;30 to 55 parts by weight of silicone polyester epoxy resin;
    부틸레이트 멜라민 수지 5~15 중량부;5-15 weight part of butyrate melamine resin;
    아이론 옥사이드 블랙안료 10~30 중량부;10 to 30 parts by weight of iron oxide black pigment;
    마이카 5~15 중량부;5-15 parts by weight of mica;
    실리카 1~5 중량부; 1 to 5 parts by weight of silica;
    폴리 아크릴레이트 수지 0.3~2 중량부; 및 0.3 to 2 parts by weight of polyacrylate resin; And
    상기 도료 총 중량인 100 중량부가 되도록 하는 잔량의 용제Residual solvent to make 100 parts by weight of the total weight of the paint
    를 포함하여 이루어지는 것을 특징으로 하는 도금 도장 복합강판.Plating coating composite steel sheet comprising a.
PCT/KR2010/006775 2010-05-17 2010-10-05 Plated and coated laminated steel sheet WO2011145783A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010800668022A CN102892916A (en) 2010-05-17 2010-10-05 Plated and coated laminated steel sheet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100046143A KR101242899B1 (en) 2010-05-17 2010-05-17 Plating painting steel sheet
KR10-2010-0046143 2010-05-17

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WO2011145783A1 true WO2011145783A1 (en) 2011-11-24

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KR (1) KR101242899B1 (en)
CN (1) CN102892916A (en)
WO (1) WO2011145783A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54100938A (en) * 1978-01-26 1979-08-09 Nippon Steel Corp Production of one-side terne alloy plated steel plate
JPS61124557A (en) * 1984-11-22 1986-06-12 Taihoo Kogyo Kk Masking method of hot dipping
KR960701157A (en) * 1993-12-28 1996-02-24 이노우에 노리유끼 COATING COMPOSITION AND COATED ARTICLE
KR20050068359A (en) * 2003-12-30 2005-07-05 동부제강주식회사 Color painted steel sheets coated adhesive-resisting coating composite for the use of preventing adhesion of sticking materials

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60124557A (en) * 1983-12-12 1985-07-03 Daihatsu Motor Co Ltd Starting control device in automatic car

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54100938A (en) * 1978-01-26 1979-08-09 Nippon Steel Corp Production of one-side terne alloy plated steel plate
JPS61124557A (en) * 1984-11-22 1986-06-12 Taihoo Kogyo Kk Masking method of hot dipping
KR960701157A (en) * 1993-12-28 1996-02-24 이노우에 노리유끼 COATING COMPOSITION AND COATED ARTICLE
KR20050068359A (en) * 2003-12-30 2005-07-05 동부제강주식회사 Color painted steel sheets coated adhesive-resisting coating composite for the use of preventing adhesion of sticking materials

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CN102892916A (en) 2013-01-23
KR101242899B1 (en) 2013-03-12
KR20110126461A (en) 2011-11-23

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