WO2011145783A1 - 도금 도장 복합강판 - Google Patents

도금 도장 복합강판 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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WO
WIPO (PCT)
Prior art keywords
weight
parts
plating
coating
coating layer
Prior art date
Application number
PCT/KR2010/006775
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English (en)
French (fr)
Korean (ko)
Inventor
김현중
주재현
장삼규
Original Assignee
동부제철 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 동부제철 주식회사 filed Critical 동부제철 주식회사
Priority to CN2010800668022A priority Critical patent/CN102892916A/zh
Publication of WO2011145783A1 publication Critical patent/WO2011145783A1/ko

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Classifications

    • 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)
PCT/KR2010/006775 2010-05-17 2010-10-05 도금 도장 복합강판 WO2011145783A1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010800668022A CN102892916A (zh) 2010-05-17 2010-10-05 电镀和涂层复合钢板

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KR1020100046143A KR101242899B1 (ko) 2010-05-17 2010-05-17 도금 도장 복합강판
KR10-2010-0046143 2010-05-17

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Publication Number Publication Date
WO2011145783A1 true WO2011145783A1 (ko) 2011-11-24

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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 (ja) * 1984-11-22 1986-06-12 Taihoo Kogyo Kk 溶融メツキのマスキング法
KR960701157A (ko) * 1993-12-28 1996-02-24 이노우에 노리유끼 도료 조성물 및 도장물[coating composition and coated article]
KR20050068359A (ko) * 2003-12-30 2005-07-05 동부제강주식회사 부착방지용 도료 조성물로 도장된 착색 도장강판

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60124557A (ja) * 1983-12-12 1985-07-03 Daihatsu Motor Co Ltd オ−トマチック車における発進制御装置

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 (ja) * 1984-11-22 1986-06-12 Taihoo Kogyo Kk 溶融メツキのマスキング法
KR960701157A (ko) * 1993-12-28 1996-02-24 이노우에 노리유끼 도료 조성물 및 도장물[coating composition and coated article]
KR20050068359A (ko) * 2003-12-30 2005-07-05 동부제강주식회사 부착방지용 도료 조성물로 도장된 착색 도장강판

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Publication number Publication date
CN102892916A (zh) 2013-01-23
KR101242899B1 (ko) 2013-03-12
KR20110126461A (ko) 2011-11-23

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