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KR102114782B1 - Coating Composition for Forming Adhesive Film on a Coating Steel Sheet and a Steel Sheet Having the Film - Google Patents

Coating Composition for Forming Adhesive Film on a Coating Steel Sheet and a Steel Sheet Having the Film Download PDF

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KR102114782B1
KR102114782B1 KR1020170180101A KR20170180101A KR102114782B1 KR 102114782 B1 KR102114782 B1 KR 102114782B1 KR 1020170180101 A KR1020170180101 A KR 1020170180101A KR 20170180101 A KR20170180101 A KR 20170180101A KR 102114782 B1 KR102114782 B1 KR 102114782B1
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steel sheet
adhesive film
composition
forming
resin
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KR1020170180101A
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Korean (ko)
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KR20190078269A (en
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박동휘
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주식회사 포스코
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/10Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an adhesive surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14Processes, 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/06Non-macromolecular additives organic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08Macromolecular additives
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04Polyurethanes

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

실란 커플링제; 우레탄 수지, 아크릴 수지 또는 이들의 혼합물; 및 테르펜 수지, 열가소성 수지, 첨가제를 포함하는 접착제 혼합물;을 포함하는 도금강판의 접착성 피막 형성용 조성물을 도포하여 접착성 피막을 형성한 강판은, 용접 대신 접착이 필요한 소재를 맞대고 압력을 가하여 프레스 접착함으로써, 용접에 의한 코팅층 손상이나 접착 부위의 부식이 발생하지 않으며, 용접 공정 및 그에 따른 후처리 공정을 생략하여 작업성 및 생산성이 향상되고, 비용도 절감된다.Silane coupling agents; Urethane resins, acrylic resins or mixtures thereof; And a terpene resin, a thermoplastic resin, and an adhesive mixture containing an additive; a steel sheet formed by applying a composition for forming an adhesive film of a plated steel sheet containing an adhesive film is pressed by applying pressure to a material that needs bonding instead of welding By bonding, the coating layer is not damaged by welding or corrosion of the bonding site is omitted, and the workability and productivity are improved and the cost is also reduced by omitting the welding process and the subsequent post-treatment process.

Description

도금강판의 접착성 피막 형성용 조성물 및 그 피막이 형성된 강판{Coating Composition for Forming Adhesive Film on a Coating Steel Sheet and a Steel Sheet Having the Film}{Coating Composition for Forming Adhesive Film on a Coating Steel Sheet and a Steel Sheet Having the Film}

본 발명은 도금강판의 접착성 피막 형성용 조성물에 관한 것으로서, 보다 상세하게는, 아연 또는 아연계합금 도금강판에 접착성이 우수한 코팅 피막을 형성하기 위한 조성물 및 상기 조성물을 도포하여 형성된 피막을 갖는 도금강판에 관한 것이다.The present invention relates to a composition for forming an adhesive film of a plated steel sheet, and more particularly, to have a composition for forming a coating film with excellent adhesion to a zinc or zinc-based alloy plated steel sheet and a film formed by applying the composition. It relates to a plated steel sheet.

아연 또는 아연계 합금 도금강판은 표면외관이 미려하고, 내식성 측면에서 강판을 보호하는 능력이 뛰어나며, 값이 싸고 제조가 용이하여, 자동차용 강판 등으로 많이 사용되고 있다. Zinc or zinc-based alloy plated steel sheet has a beautiful surface appearance, has excellent ability to protect the steel sheet in terms of corrosion resistance, is inexpensive and easy to manufacture, and is widely used as an automotive steel sheet.

이와 같은 도금강판이 자동차 등의 제조공정에서 사용될 때, 통상 프레스 성형 공정, 용접 및 접착과 같은 조립 공정, 탈지 공정, 인산염 처리 공정 및 도장 공정을 순서대로 거치게 된다.When such a plated steel sheet is used in a manufacturing process such as an automobile, it is usually subjected to an assembly process such as a press forming process, welding and adhesion, a degreasing process, a phosphate treatment process and a painting process in order.

그러나 강판을 용접하는 경우, 도 3에 도시한 바와 같이 용접한 부위에 형성되어 있던 코팅층이 손상되거나 또는 용접 부위가 부식되어 적청이 발생하는 등 내식성이 하락하는 문제점이 있다. 이와 같은 문제점을 해결하기 위해서는 용접한 부위에 추가적인 페인트 처리 공정을 실시하거나, 방식 물질의 도포 공정이 필요하나, 이와 같은 추가적인 공정의 실시는 전체적인 작업성의 하락을 가져오는 문제점이 있다.However, when welding a steel sheet, as shown in FIG. 3, there is a problem in that corrosion resistance is deteriorated, such as damage to the coating layer formed on the welded portion or corrosion of the welded portion to generate red rust. In order to solve this problem, an additional paint treatment process is performed on a welded site, or a process of applying an anticorrosive material is required, but the execution of such an additional process has a problem of deteriorating overall workability.

이에 따라 강판의 용접시 발생하는 강판 코팅층의 손상을 억제하고, 강판의 부식을 예방하며, 나아가 도금강판을 사용하여 부품 제조시 전반적인 작업성의 향상을 제공할 수 있는 우수한 강판이 필요하다.Accordingly, there is a need for an excellent steel sheet capable of suppressing damage to the steel sheet coating layer generated during welding of the steel sheet, preventing corrosion of the steel sheet, and further providing improvement in overall workability when manufacturing parts using a plated steel sheet.

본 발명의 목적은 강판에 접착성 피막을 형성함으로써 프레스를 통하여 부품간 접착이 가능하게 하여, 용접 공정 및 장비를 제거하는 것이다.An object of the present invention is to form an adhesive film on a steel sheet to enable adhesion between parts through a press, thereby eliminating welding processes and equipment.

본 발명의 다른 목적은 프레스에 의해 부품을 접착시킴에 따라 용접에 의한 코팅층 손상 및 용접 부위의 부식을 방지하며, 이에 따라 부식 방지를 위한 추가적인 페인트 처리 공정이나 방식 물질의 도포 공정을 생략하는 것이다.Another object of the present invention is to prevent damage to the coating layer due to welding and corrosion of the welding site as the parts are adhered by a press, thereby omitting an additional paint treatment process or an anticorrosive material application process to prevent corrosion.

본 발명의 일 구현예는 실란 커플링제; 우레탄 수지, 아크릴 수지 또는 이들의 혼합물; 및 테르펜 수지, 열가소성 수지, 첨가제를 포함하는 접착제 혼합물;을 포함하는 도금강판의 접착성 피막 형성용 조성물을 제공한다.One embodiment of the present invention is a silane coupling agent; Urethane resins, acrylic resins or mixtures thereof; And terpene resin, a thermoplastic resin, an adhesive mixture containing an additive; provides a composition for forming an adhesive film of a plated steel sheet containing.

본 발명의 다른 구현예는, 강판; 및 상기 강판의 일 표면에 접착성 피막 형성용 조성물을 도포하여 형성된 피막;을 포함하는 접착성 피막이 형성된 강판으로서, 상기 접착성 피막 형성용 조성물은 상기한 도금강판의 접착성 피막 형성용 조성물인 강판을 제공한다.Another embodiment of the present invention, a steel sheet; And a coating film formed by applying an adhesive film forming composition to one surface of the steel sheet; wherein the adhesive film forming composition is a steel sheet which is a composition for forming an adhesive film of the above-mentioned plated steel sheet. Gives

기타 구현예들의 구체적인 사항은 이하의 상세한 설명에 포함되어 있다.Specific details of other implementations are included in the detailed description below.

본 발명에 따른 접착성 피막이 형성된 도금강판은 용접 대신 접착이 필요한 소재를 맞대고 압력을 가하여 프레스 접착을 할 수 있기 때문에, 용접에 의한 코팅층 손상이나 접착 부위의 부식이 발생하지 않으며, 용접 공정 및 그에 따른 후처리 공정을 생략할 수 있어 작업성 및 생산성이 향상되고, 비용도 절감된다.Since the plated steel sheet formed with the adhesive film according to the present invention can press-press against a material that needs adhesion instead of welding, and press-presses it, there is no damage to the coating layer due to welding or corrosion of the adhesion site, and the welding process and accordingly Since the post-treatment process can be omitted, workability and productivity are improved, and cost is also reduced.

도 1은 본 발명의 일 실시예에 따른 도금강판의 구조를 개략적으로 나타낸 단면도이다.
도 2는 본 발명의 일 실시예에 따른 접착성 피막이 형성된 도금강판의 접착 방법을 보여주는 공정도이다.
도 3은 도금강판을 종래의 방법에 따라 용접 공정을 실시하여 접착한 경우, 용접부위의 사진이다.
1 is a cross-sectional view schematically showing the structure of a plated steel sheet according to an embodiment of the present invention.
2 is a process diagram showing a method of bonding a plated steel sheet with an adhesive film according to an embodiment of the present invention.
FIG. 3 is a photograph of a welded portion when a plated steel sheet is adhered by performing a welding process according to a conventional method.

이하, 본 발명의 구현예를 상세히 설명하기로 한다. 다만, 이는 예시로서 제시되는 것으로, 이에 의해 본 발명이 제한되지는 않으며 본 발명은 후술할 청구범위의 범주에 의해 정의될 뿐이다.Hereinafter, embodiments of the present invention will be described in detail. However, this is presented as an example, and the present invention is not limited thereby, and the present invention is only defined by the scope of claims to be described later.

본 발명의 일 구현예에 따른 도금강판의 접착성 피막 형성용 조성물은, 실란 커플링제; 우레탄 수지, 아크릴 수지 또는 이들의 혼합물; 및 테르펜 수지, 열가소성 수지, 첨가제를 포함하는 접착제 혼합물;을 포함한다.Composition for forming an adhesive film of a plated steel sheet according to an embodiment of the present invention, a silane coupling agent; Urethane resins, acrylic resins or mixtures thereof; And an adhesive mixture comprising a terpene resin, a thermoplastic resin, and an additive.

본 발명의 다른 구현예에 따른 접착성 피막이 형성된 강판은, 강판; 및 상기 강판의 일 표면에 상기 도금강판의 접착성 피막 형성용 조성물을 도포하여 형성된 피막을 포함한다.Steel sheet with an adhesive coating according to another embodiment of the present invention, the steel sheet; And a film formed by applying a composition for forming an adhesive film of the plated steel sheet on one surface of the steel sheet.

상기 도금강판은 아연 도금강판 또는 아연계 합금 도금강판인 것인 바람직하다.The plated steel sheet is preferably a zinc plated steel sheet or a zinc-based alloy plated steel sheet.

상기 도금강판의 접착성 피막 형성용 조성물은, 상기 실란 커플링제 60 ~ 80 중량%; 상기 우레탄 수지, 아크릴 수지 또는 이들의 혼합물 15 ~ 25 중량%; 및 상기 테르펜 수지, 열가소성 수지, 첨가제를 포함하는 상기 접착제 혼합물 5 ~ 15 중량%;를 포함하는 것이 바람직하다. 상기 실란 커플링제의 첨가량이 60 중량% 미만이면, 도금강판과의 밀착성 불량 문제가 발생하고, 80중량%를 초과하면 무기물 증가로 내알칼리성 저하 문제가 발생할 수 있다. 상기 접착제 혼합물의 첨가량이 과소하면 강판 사이에 충분한 접착력이 확보되지 않으며, 첨가량이 과대하면 강판에 대한 피막의 접착력이 확보되지 않는다.The composition for forming an adhesive film of the plated steel sheet includes 60 to 80% by weight of the silane coupling agent; 15 to 25% by weight of the urethane resin, acrylic resin or a mixture thereof; And 5 to 15% by weight of the adhesive mixture containing the terpene resin, a thermoplastic resin, and an additive. If the addition amount of the silane coupling agent is less than 60% by weight, a problem of poor adhesion with a plated steel sheet occurs, and when it exceeds 80% by weight, an increase in inorganic substances may cause a problem of deterioration in alkali resistance. When the added amount of the adhesive mixture is excessive, sufficient adhesion between the steel sheets is not secured, and when the added amount is excessive, the adhesion of the film to the steel sheet is not secured.

상기 첨가제는 산화방지제, 왁스, 기타 첨가제로 이루어진 군에서 선택되는 하나 또는 둘 이상의 조합인 것이 바람직하다.The additive is preferably one or a combination of two or more selected from the group consisting of antioxidants, waxes, and other additives.

상기 열가소성 수지는 폴리아미드, 폴리에스테르, 폴리페닐렌설파이드, 폴리아세탈, 스티렌계 수지, 폴리페닐렌옥사이드, 폴리카보네이트, 폴리젖산, 폴리프로필렌, 폴리에틸렌으로 이루어진 군으로부터 선택되는 하나 또는 둘 이상의 조합인 것이 바람직하며, 더욱 바람직하게는 폴리프로필렌과 폴리에틸렌의 혼합물인 것이 바람직하다.The thermoplastic resin is one or a combination of two or more selected from the group consisting of polyamide, polyester, polyphenylene sulfide, polyacetal, styrene resin, polyphenylene oxide, polycarbonate, polylactic acid, polypropylene, polyethylene It is preferred, and more preferably a mixture of polypropylene and polyethylene.

상기 접착제 혼합물에서 상기 테르펜 수지 : 상기 폴리프로필렌 : 상기 폴리에틸렌 : 상기 첨가제의 함량 비율은 중량비로 10 ~ 30 : 20 ~ 40 : 25~ 45 : 5 ~ 25인 것이 바람직하다. 상기 테르펜 수지의 중량비가 10 미만이면 강판 사이에 충분한 접착력이 확보되지 않으며, 30 초과이면 강판에 대한 피막의 접착력이 확보되지 않는다. 상기 테르펜 수지는 폴리테르펜 수지, 페놀화 테르펜 수지, 스티렌화 테르펜 수지로 이루어진 군으로부터 선택되는 하나 또는 둘 이상의 조합인 것이 바람직하다.It is preferable that the content ratio of the terpene resin: the polypropylene: the polyethylene: and the additive in the adhesive mixture is 10 to 30: 20 to 40: 25 to 45: 5 to 25 by weight. If the weight ratio of the terpene resin is less than 10, sufficient adhesion between the steel sheets is not secured, and if it exceeds 30, adhesion of the coating to the steel sheet is not secured. The terpene resin is preferably one or two or more combinations selected from the group consisting of polyterpene resins, phenolized terpene resins, and styrenated terpene resins.

상기 우레탄 수지와 아크릴 수지의 혼합물에서 상기 우레탄 수지와 상기 아크릴 수지의 함량 비율은 중량비로 60 ~ 80 : 20 ~ 40인 것이 바람직하다.The ratio of the content of the urethane resin and the acrylic resin in the mixture of the urethane resin and the acrylic resin is preferably 60 to 80: 20 to 40 by weight.

상기 우레탄 수지는 경질 우레탄, 연질 우레탄 또는 이들의 혼합물이 바람직하며, 상기 경질 우레탄 : 상기 연질 우레탄의 함량 비율은 중량비로 30 ~ 40 : 60 ~ 70인 것이 바람직하다. 그리고 상기 우레탄 수지는 수평균 분자량이 50,000~1,000,000이며, 이소포렌 디이소시아네이트, 아디픽산, 다가알코올로부터 제조될 수 있다.The urethane resin is preferably a hard urethane, soft urethane, or a mixture thereof, and the content ratio of the hard urethane: soft urethane is preferably 30 to 40:60 to 70 by weight. In addition, the urethane resin has a number average molecular weight of 50,000 to 1,000,000, and can be prepared from isophorene diisocyanate, adipic acid, and polyhydric alcohol.

상기 아크릴 수지는 수평균분자량이 500,000~2,000,000이며, n-부틸 아크릴레이트, 메틸메타아크릴레이트, n-부틸 메타아크릴레이트, 에틸렌 아크릴레이트 단량체로부터 제조될 수 있다.The acrylic resin has a number average molecular weight of 500,000 to 2,000,000, and may be prepared from n-butyl acrylate, methyl methacrylate, n-butyl methacrylate, and ethylene acrylate monomers.

상기 실란 커플링제는 비닐트리클로로실란(vinyltrichlorosilane), 비닐트리메톡시비닐실란(vinyltrimethoxyvinylsilane), 비닐트리에톡시비닐실란(vinyltriethoxyvinylsilane), 2-(3,4-에폭시시클로헥실에틸)트리메톡시실란(2-(3,4-epoxycyclohexylethyl)trimethoxysilane), 3-글리시독시프로필메틸디메톡시실란(3-glycidoxypropyltrimethoxysilane), 디에톡시-3-글리시독시프로필메틸실란(diethoxy-3-glycidoxypropylmethylsilane), 3-글리시독시프로필트리메톡시실란(3-glycidoxypropyltrimethoxysilane), 3-글리시독시프로필트리에톡시실란(3-glycidoxypropyltriethoxysilane), 3-메타크릴옥시프로필디메톡시메틸실란(3-methacryloxypropyldimethoxymethylsilane), 3-메타크릴옥시프로필트리메톡시메틸실란(3-methacryloxypropyltrimethoxymethylsilane), 3-메타크릴옥시프로필디에톡시메틸실란(3-methacryloxypropyldiethoxymethylsilane), 3-메타크릴옥시프로필트리에틸실란(3-methacryloxypropyltriethylsilane), 3-(2-아미노에틸아미노프로필)디메톡시메틸실란(3-(2-aminoethyllaminopropyl)dimethoxymethylsilane), 3-(2-아미노에틸아미노프로필)트리메톡시실란(3-(2-aminoethyllaminopropyl)trimethoxysilane), 3-(2-아미노에틸아미노프로필)트리에톡시실란(3-(2-aminoethyllaminopropyl)triethoxysilane), 3-아미노프로필트리메톡시실란(3-aminopropyltrimethoxysilane) 및 3-아미노프로필트리에톡시실란(3-aminopropyltriethoxysilane)으로 이루어진 군으로부터 선택되는 하나 또는 둘 이상의 조합인 것이 바람직하다.The silane coupling agent is vinyltrichlorosilane, vinyltrimethoxyvinylsilane, vinyltriethoxyvinylsilane, 2- (3,4-epoxycyclohexylethyl) trimethoxysilane ( 2- (3,4-epoxycyclohexylethyl) trimethoxysilane), 3-glycidoxypropyltrimethoxysilane, diethoxy-3-glycidoxypropylmethylsilane, 3-glycine 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 3-methacryloxypropyldimethoxymethylsilane, 3-methacryloxy 3-methacryloxypropyltrimethoxymethylsilane, 3-methacryloxypropyldiethoxymethylsilane, 3-methacryloxypropyltriethylsilane, 3- (2-aminoethyl Aminopropyl) dimethoxymethylsilane (3- (2-aminoethyllaminopropyl) dimethoxymethylsilane), 3- (2-aminoethylaminopropyl) trimethoxysilane, 3- (2-aminoethyl Aminopropyl) triethoxysilane (3- (2-aminoethyllaminopropyl) triethoxysilane), 3-aminopropyl trimethoxysilane (3-aminopropyltrimethoxysilane) and 3-aminopropyl triethoxysilane (3-aminopropyltriethoxysilane) It is preferred that it is one or a combination of two or more.

상기 강판의 일 표면에 도포되는 접착성 피막 형성용 조성물의 도포량은 500~2000mg/m2인 것이 바람직하며, 800~1200mg/m2인 것이 더욱 바람직하다. 상기 도포량을 초과할 경우 접착량 대비 실질적인 접착 성능의 향상 비율이 적어 비경제적이며, 도포량에 미달할 경우 충분한 접착력이 확보되지 않는다.And the coating amount for forming the adhesive film applied to one surface of the steel composition is preferably 500 to a 2000mg / m 2, more preferably of 800 ~ 1200mg / m 2. When the coating amount is exceeded, it is uneconomical because the rate of improvement of the actual adhesive performance compared to the adhesive amount is small, and if it is less than the coating amount, sufficient adhesive strength is not secured.

이하, 본 발명을 실시예를 통하여 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail through examples.

[실시예][Example]

(실시예 1)(Example 1)

실란 커플링제 70 중량%, 우레탄 수지과 아크릴 수지의 혼합물 20 중량%(우레탄 수지 : 아크릴 수지의 혼합 중량비는 70:30), 테르펜 수지, 열가소성 수지인 폴리프로필렌과 폴리에틸렌, 및 첨가제의 접착제 혼합물 10 중량%(테르펜 수지 : 폴리프로필렌 : 폴리에틸렌 : 첨가제의 혼합 중량비는 20 : 30 : 35 : 15)를 성분으로 하는 도금강판의 접착성 피막 형성용 조성물을 제조하였다.Silane coupling agent 70% by weight, a mixture of urethane resin and acrylic resin 20% by weight (urethane resin: acrylic resin mixed weight ratio is 70:30), terpene resin, thermoplastic resin polypropylene and polyethylene, and additive adhesive mixture 10% by weight A composition for forming an adhesive film of a plated steel sheet comprising (terpene resin: polypropylene: polyethylene: additive weight ratio of 20: 30: 35: 15) as a component was prepared.

상기와 같이 제조된 접착성 피막 형성용 조성물을 롤코팅에 의하여 아연도금강판의 일 표면에 500mg/m2 도포하고, 140~150에서 굽는 과정을 거쳐 강판 표면에 고형화된 피막을 형성하여, 접착성 피막이 형성된 강판을 제조하였다. 제조된 강판은 도 1에 도시한 바와 같이, 모재층인 강판(1)의 표면에 접착성 피막 형성용 조성물을 포함하는 피막 코팅층(2)이 형성된 구조를 갖는다.500 mg / m 2 is applied to the surface of the galvanized steel sheet by roll coating the composition for forming an adhesive film prepared as described above, and baked at 140 to 150 to form a solidified film on the surface of the steel sheet, thereby adhering A steel sheet with a coating was formed. The prepared steel sheet has a structure in which a coating layer 2 including a composition for forming an adhesive film is formed on the surface of the steel sheet 1 which is a base material layer.

(실시예 2)(Example 2)

상기한 실시예 1에서 아연도금강판의 일 표면에 도포되는 접착성 피막 형성용 조성물의 양을 700mg/m2 한 것을 제외하고는 상기한 실시예 1과 동일하게 실시하여, 접착성 피막이 형성된 강판을 제조하였다.In Example 1, except that the amount of the composition for forming an adhesive film applied to one surface of the galvanized steel sheet was 700 mg / m 2 , it was carried out in the same manner as in Example 1, to obtain a steel sheet with an adhesive film formed thereon. It was prepared.

(실시예 3)(Example 3)

상기한 실시예 1에서 아연도금강판의 일 표면에 도포되는 접착성 피막 형성용 조성물의 양을 800mg/m2 한 것을 제외하고는 상기한 실시예 1과 동일하게 실시하여, 접착성 피막이 형성된 강판을 제조하였다.In Example 1, except that the amount of the composition for forming an adhesive film applied to one surface of a galvanized steel sheet was 800 mg / m 2 , it was carried out in the same manner as in Example 1, to obtain a steel sheet with an adhesive film formed thereon. It was prepared.

(실시예 4)(Example 4)

상기한 실시예 1에서 아연도금강판의 일 표면에 도포되는 접착성 피막 형성용 조성물의 양을 1200mg/m2 한 것을 제외하고는 상기한 실시예 1과 동일하게 실시하여, 접착성 피막이 형성된 강판을 제조하였다.In Example 1, except that the amount of the composition for forming an adhesive film applied to one surface of a galvanized steel sheet was 1200 mg / m 2 , it was carried out in the same manner as in Example 1, to obtain a steel sheet with an adhesive film formed thereon. It was prepared.

(실시예 5)(Example 5)

상기한 실시예 1에서 아연도금강판의 일 표면에 도포되는 접착성 피막 형성용 조성물의 양을 1300mg/m2 한 것을 제외하고는 상기한 실시예 1과 동일하게 실시하여, 접착성 피막이 형성된 강판을 제조하였다.In Example 1, except that the amount of the composition for forming an adhesive film applied to one surface of the galvanized steel sheet was 1300 mg / m 2 , it was carried out in the same manner as in Example 1, to obtain a steel sheet with an adhesive film formed thereon. It was prepared.

(실시예 6)(Example 6)

상기한 실시예 1에서 아연도금강판의 일 표면에 도포되는 접착성 피막 형성용 조성물의 양을 2000mg/m2 한 것을 제외하고는 상기한 실시예 1과 동일하게 실시하여, 접착성 피막이 형성된 강판을 제조하였다.In Example 1, except that the amount of the composition for forming an adhesive coating applied to one surface of a galvanized steel sheet was 2000 mg / m 2 , it was carried out in the same manner as in Example 1, to obtain a steel sheet with an adhesive coating formed thereon. It was prepared.

(접착 강도 평가)(Evaluation of adhesive strength)

상기한 실시예 1 내지 6에 따라 제조된 접착성 피막이 형성된 강판(1180Mpa급 1.2 두께)을 도 2에 도시한 바와 같이 맞댄 후 압착 프레스에 의하여 접착시키고, 이들의 전단인장강도 및 십자인장강도를 측정하여 그 결과를 하기한 [표 1]에 기재하였다. 아울러 하기한 [표 1]에는 비교예로서 접착성 피막이 형성되지 않은 강판(1180Mpa급 1.2 두께)을 스폿 용접에 의해 접착시키고, 전단인장강도 및 십자인장강도를 측정하여, 그 결과를 하기한 [표 1]에 함께 기재하였다.The steel sheets (1180Mpa class 1.2 thick) formed with the adhesive film prepared according to the above Examples 1 to 6 were fitted as shown in FIG. 2 and then adhered by a pressing press, and their shear tensile strength and cross tensile strength were measured. The results are shown in Table 1 below. In addition, in the following [Table 1], as a comparative example, a steel sheet (1180 Mpa class 1.2 thick) without an adhesive film was adhered by spot welding, and shear strength and cross tensile strength were measured, and the results were shown in the [Table 1]. 1].

[표 1][Table 1]

Figure 112017129348526-pat00001
Figure 112017129348526-pat00001

상기한 [표 1]에서 알 수 있는 바와 같이, 본 발명의 실시예 1 내지 6에 따라 접착성 피막이 형성된 강판들을 압착 프레스에 의하여 부착한 부품의 전단인장강도 및 십자인장강도와 비교예에 따른 기존의 강판을 스폿 용접에 의해 부착한 부품의 전단인장강도 및 십자인장강도가 크게 상이하지 않음을 고려할 때, 본 발명의 실시예에 따른 접착성 피막 형성용 조성물은 용접을 대신할 수 있는 접착성 피막을 강판에 제공할 수 있음을 알 수 있다.As can be seen from the above [Table 1], according to Examples 1 to 6 of the present invention, the shear tensile strength and cross-tensile strength of the components attached by the pressing press to the steel sheets formed with the adhesive film, the existing according to the comparative example Considering that the shear tensile strength and the cross tensile strength of the parts to which the steel sheet of the article is attached by spot welding are not significantly different, the composition for forming an adhesive film according to an embodiment of the present invention is an adhesive film that can replace welding It can be seen that can be provided to the steel sheet.

또한 상기한 [표 1]에 의하면, 접착성 피막 형성용 조성물의 도포량이 증가할수록 접착 성능이 향상됨을 알 수 있으며, 경제성을 고려할 때 도포량을 800~12000mg/m2으로 조절하는 것이 바람직한 것으로 판단된다.In addition, according to the above [Table 1], it can be seen that the adhesion performance is improved as the coating amount of the composition for forming an adhesive film increases, and it is judged that it is desirable to adjust the coating amount to 800 to 12000 mg / m 2 in consideration of economic efficiency. .

본 발명은 상기 실시예들에 한정되는 것이 아니라 서로 다른 다양한 형태로 제조될 수 있으며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자는 본 발명의 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 실시될 수 있다는 것을 이해할 수 있을 것이다. 그러므로 이상에서 기술한 실시예들은 모든 면에서 예시적인 것이며 한정적이 아닌 것으로 이해해야만 한다.The present invention is not limited to the above embodiments, but may be manufactured in various different forms, and those skilled in the art to which the present invention pertains have other specific forms without changing the technical spirit or essential features of the present invention. It will be understood that can be carried out. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Claims (13)

실란 커플링제;
우레탄 수지, 아크릴 수지 또는 이들의 혼합물; 및
테르펜 수지, 열가소성 수지, 및 첨가제를 포함하는 접착제 혼합물;을
포함하고,
상기 테르펜 수지는 폴리테르펜 수지, 페놀화 테르펜 수지, 스티렌화 테르펜 수지로 이루어진 군으로부터 선택되는 하나 또는 둘 이상의 조합이고,
상기 열가소성 수지는 폴리프로필렌과 폴리에틸렌의 혼합물인 도금강판의 접착성 피막 형성용 조성물.
Silane coupling agents;
Urethane resins, acrylic resins or mixtures thereof; And
An adhesive mixture comprising a terpene resin, a thermoplastic resin, and an additive;
Including,
The terpene resin is one or two or more combinations selected from the group consisting of polyterpene resins, phenolized terpene resins, and styrenated terpene resins,
The thermoplastic resin is a composition for forming an adhesive film of a plated steel sheet which is a mixture of polypropylene and polyethylene.
제1항에 있어서,
상기 도금강판은 아연 도금강판 또는 아연계 합금 도금강판의 접착성 피막 형성용 조성물.
According to claim 1,
The plated steel sheet is a composition for forming an adhesive film of a galvanized steel sheet or a zinc-based alloy plated steel sheet.
제1항에 있어서,
상기 실란 커플링제 60 ~ 80 중량%;
상기 우레탄 수지, 아크릴 수지 또는 이들의 혼합물 15 ~ 25 중량%; 및
상기 테르펜 수지, 열가소성 수지, 및 첨가제를 포함하는 상기 접착제 혼합물 5 ~ 15 중량%;를
포함하는 도금강판의 접착성 피막 형성용 조성물.
According to claim 1,
60 to 80% by weight of the silane coupling agent;
15 to 25% by weight of the urethane resin, acrylic resin or a mixture thereof; And
5 to 15% by weight of the adhesive mixture containing the terpene resin, thermoplastic resin, and additives;
Composition for forming an adhesive film of a plated steel sheet containing.
삭제delete 제3항에 있어서,
상기 첨가제는 산화방지제 및/또는 왁스인 도금강판의 접착성 피막 형성용 조성물.
According to claim 3,
The additive is a composition for forming an adhesive film of a plated steel sheet which is an antioxidant and / or wax.
삭제delete 제1항에 있어서,
상기 접착제 혼합물에서 상기 테르펜 수지 : 상기 폴리프로필렌 : 상기 폴리에틸렌 : 상기 첨가제의 함량 비율은 중량비로 10 ~ 30 : 20 ~ 40 : 25~ 45 : 5 ~ 25인 도금강판의 접착성 피막 형성용 조성물.
According to claim 1,
In the adhesive mixture, the content of the terpene resin: the polypropylene: the polyethylene: the additive is 10 to 30: 20 to 40: 25 to 45: 5 to 25 by weight ratio.
제1항에 있어서,
상기 우레탄 수지와 아크릴 수지의 혼합물에서 상기 우레탄 수지와 상기 아크릴 수지의 함량 비율은 중량비로 60 ~ 80 : 20 ~ 40인 도금강판의 접착성 피막 형성용 조성물.
According to claim 1,
In the mixture of the urethane resin and the acrylic resin, the content ratio of the urethane resin and the acrylic resin is a composition for forming an adhesive film of a plated steel sheet having a weight ratio of 60 to 80:20 to 40.
제1항에 있어서,
상기 우레탄 수지는 경질 우레탄, 연질 우레탄, 또는 이들의 혼합물인 도금강판의 접착성 피막 형성용 조성물.
According to claim 1,
The urethane resin is a composition for forming an adhesive film of a plated steel sheet which is hard urethane, soft urethane, or a mixture thereof.
제9항에 있어서,
상기 우레탄 수지에서 상기 경질 우레탄 : 상기 연질 우레탄의 함량 비율은 중량비로 30 ~ 40 : 60 ~ 70 인 도금강판의 접착성 피막 형성용 조성물.
The method of claim 9,
In the urethane resin, the ratio of the content of the hard urethane to the soft urethane is 30 to 40: 60 to 70 by weight, and the composition for forming an adhesive film of a plated steel sheet.
강판; 및
상기 강판의 일 표면에 접착성 피막 형성용 조성물을 도포하여 형성된 피막;
을 포함하는 접착성 피막이 형성된 강판으로서,
상기 접착성 피막 형성용 조성물은 제1항 또는 제10항중 어느 한항의 도금강판의 접착성 피막 형성용 조성물인 강판.
Grater; And
A film formed by applying an adhesive film forming composition to one surface of the steel sheet;
A steel sheet with an adhesive coating formed thereon,
The composition for forming an adhesive film is a steel sheet which is a composition for forming an adhesive film of the plated steel sheet according to any one of claims 1 to 10.
제11항에 있어서,
상기 강판의 일 표면에 도포되는 접착성 피막 형성용 조성물의 도포량은 500~2000mg/m2인 강판.
The method of claim 11,
The coating amount of the composition for forming an adhesive film applied to one surface of the steel sheet is 500 to 2000 mg / m 2 .
제12항에 있어서,
상기 강판의 일 표면에 도포되는 표면 처리 조성물의 도포량은 800~1200mg/m2인 강판.
The method of claim 12,
The coated amount of the surface treatment composition applied to one surface of the steel sheet is 800 to 1200 mg / m 2 .
KR1020170180101A 2017-12-26 2017-12-26 Coating Composition for Forming Adhesive Film on a Coating Steel Sheet and a Steel Sheet Having the Film KR102114782B1 (en)

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