KR102325973B1 - Eco-friendly ceramic coating composition and steel structure coating method using the same - Google Patents

Eco-friendly ceramic coating composition and steel structure coating method using the same Download PDF

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KR102325973B1
KR102325973B1 KR1020210080933A KR20210080933A KR102325973B1 KR 102325973 B1 KR102325973 B1 KR 102325973B1 KR 1020210080933 A KR1020210080933 A KR 1020210080933A KR 20210080933 A KR20210080933 A KR 20210080933A KR 102325973 B1 KR102325973 B1 KR 102325973B1
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weight
parts
resistance
forming
eco
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오상원
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케이알건설 주식회사
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16—Antifouling paints; Underwater paints
    • C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions 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; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09D133/062—Copolymers with monomers not covered by C09D133/06
    • C09D133/066—Copolymers with monomers not covered by C09D133/06 containing -OH groups
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D171/02—Polyalkylene oxides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The present invention relates to an eco-friendly ceramic-based coating material composition and a steel structure coating method using the same and, more specifically, to an eco-friendly ceramic-based coating material composition that has excellent properties such as weather resistance, durability, water resistance, moisture resistance, acid resistance, alkali resistance, etc., and has an ultra-weather resistance function superior to that of general urethane-based materials to maintain very excellent corrosion resistance over a long period of time and a steel structure coating method using the same. In addition, the present invention comprises: S1 step of forming an undercoat layer on the surface of a structure to be coated; S2 step of forming an intermediate layer on the surface of the undercoat layer; and S3 step of forming a top coat layer on the surface of the intermediate layer. The undercoat layer comprises 40 to 50 parts by weight of propylene glycol methyl ether, 30 to 40 parts by weight of 3-aminopropyltriethoxysilane, 15 to 30 parts by weight of zinc phosphate, 10 to 20 parts by weight of butyl acrylate, 5 to 15 parts by weight of 2-propanol, 3 to 10 parts by weight of ethylbenzene, 1 to 5 parts by weight of an alkylammonium salt, and 1 to 5 parts by weight of silica.

Description

친환경 세라믹계 도장재 조성물 및 이를 이용한 강구조물 도장방법{Eco-friendly ceramic coating composition and steel structure coating method using the same}Eco-friendly ceramic coating composition and steel structure coating method using the same

본 발명은 친환경 세라믹계 도장재 조성물 및 이를 이용한 강구조물 도장방법에 관한 것으로서, 보다 구체적으로 내후성, 내구성, 내수성, 내습성, 내산성, 내알칼리성 등의 물성이 우수하며, 일반 우레탄계 보다 월등한 초내후성 기능을 보유하여 장기간에 걸쳐 매우 우수한 방식성을 유지할 수 있는 친환경 세라믹계 도장재 조성물 및 이를 이용한 강구조물 도장방법에 관한 것이다.The present invention relates to an eco-friendly ceramic coating material composition and a method for coating a steel structure using the same, and more specifically, has excellent physical properties such as weather resistance, durability, water resistance, moisture resistance, acid resistance, alkali resistance, etc. It relates to an eco-friendly ceramic-based coating material composition capable of maintaining very excellent corrosion resistance over a long period of time by holding it, and a method for coating a steel structure using the same.

최근 강화되고 있는 대기환경 오염에 대한 국제적인 규제는 환경 친화성 도료의 개발을 요구하고 있다. 통상적으로 사용되어 왔던 유성도료의 수용성화 및 분체도료화 추세가 급속하게 이루어지고 있다. 최근 들어 작업장의 밀폐된 공간에서의 도장작업은 작업자들에게 유기용제의 무방비 노출에 의해서 유기용제에 의한 질식 등 작업자들의 건강을 위협하고 있을 뿐만 아니라 화재위험 등 위험요소가 산재되어 있어 더욱더 수성도료가 필요시 되고 있다.International regulations on air pollution, which are being strengthened recently, require the development of environmentally friendly paints. The trend toward water-soluble and powder coatings of oil-based paints, which have been conventionally used, is rapidly progressing. Recently, painting work in an enclosed space in the workplace is not only threatening the health of workers such as suffocation by organic solvents due to unprotected exposure of organic solvents to workers, but also risk factors such as fire hazard. is becoming necessary

일반적으로 철을 포함하는 구조물은 대부분 자연환경에 노출되어 부식되기 쉬우며 철구조물의 내후성을 증진하기 위해 부식을 방지할 수 있도록 철구조물 표면에 부식방지처리하는 것이 일반적이다.In general, structures containing iron are most likely to be corroded by exposure to the natural environment, and it is common to treat the surface of the steel structure with an anti-corrosion treatment to prevent corrosion in order to improve the weather resistance of the steel structure.

철구조물의 부식은 건식, 습식부식으로 나누는데 건식부식은 고온가스 등에 의한 부식이며, 습식부식은 수중(담수, 해수 등), 대기중부식, 산, 알카리, 염 등에 의한 부식이 발생할 수 있으며, 땅속에서의 부식은 습식부식이 라고 표현할 수 있다.Corrosion of steel structures is divided into dry corrosion and wet corrosion. Dry corrosion is corrosion caused by high-temperature gas, etc., and wet corrosion can occur in water (fresh water, seawater, etc.), atmospheric corrosion, acid, alkali, salt, etc. Corrosion can be expressed as wet corrosion.

상기와 같은 부식환경으로부터 철구조물을 보호할 수 있는 수성도료의 개발이 필요한 실정이다.There is a need to develop a water-based paint capable of protecting the steel structure from the corrosive environment as described above.

이러한 수성도료에 대한 선행특허의 일례로, 등록특허 제10-1371224호에서는 수용성 에폭시 수지 5~25중량부, 물 1~5중량부, 희석제 1~10중량부, 수용성 경화제 5~30중량부, 착색안료 1~10중량부를 포함하여 중방식 도료 조성물을 형성하되, 상기 중방식 도료 조성물 100중량부에 대하여 하이드록시 벤조페논(Hydroxy benzophenone), 또는 하이드록시페닐 벤조트리아졸(Hydroxyphenyl benzotriazole)로 이루어지는 자외선 안정제 0.1~1.0중량부, 자외선 차단제 0.1~1.0중량부를 더 혼합하며,상기 조성물 100중량부에 대하여 카본블랙, 카드뮴옐로우, 카드뮴레드, 코발트블루, 산화크롬, 탄산칼슘, 황산바륨으로 이루어진 군에서 선택되는 어느 하나의 무기안료 2.0~10.0중량부를 더 추가하는 것을 특징으로 하는 중방식 도료 조성물이 개시되어 있다.As an example of a prior patent for such a water-based paint, in Patent Registration No. 10-1371224, 5 to 25 parts by weight of a water-soluble epoxy resin, 1 to 5 parts by weight of water, 1 to 10 parts by weight of a diluent, 5 to 30 parts by weight of a water-soluble curing agent, A medium anticorrosive coating composition is formed including 1 to 10 parts by weight of a color pigment, and UV rays composed of hydroxy benzophenone or hydroxyphenyl benzotriazole based on 100 parts by weight of the medium anticorrosive coating composition 0.1 to 1.0 parts by weight of a stabilizer and 0.1 to 1.0 parts by weight of a sunscreen are further mixed, and selected from the group consisting of carbon black, cadmium yellow, cadmium red, cobalt blue, chromium oxide, calcium carbonate, and barium sulfate based on 100 parts by weight of the composition A heavy-duty anticorrosive coating composition is disclosed, characterized in that it further adds 2.0 to 10.0 parts by weight of any one inorganic pigment.

또한, 등록특허 제10-1310615호에서는 방향족 디이소시아네이트 35~55wt%, 폴리옥시알킬렌글리콜 35~55wt%, 가소제 3~15wt%로 이루어지는 이소시아네이트 프리폴리머를 포함하는 주제; 및 작용기 2 내지 3, 분자량 200 내지 5000, 수산기가 20 내지 300인 폴리옥시프로필렌글리콜 및 작용기 3, 분자량 400 내지 5000, 수산기가 40 내지 700인 폴리옥시프로필렌트리올 중 적어도 어느 하나로 이루어지는 폴리올 65~85wt%; 및 폴리에스테르폴리올 및 아민류 사슬확장제 중 적어도 어느 하나로 이루어지는 사슬확장제 15~35wt%를 포함하는 경화제 혼합물을 포함하고, 상기 주제: 경화제 혼합물의 부피비는 1:0.9 내지 1: 1.1인 폴리우레탄 도막 방수재 조성물이 개시되어 있다.In addition, in Patent No. 10-1310615, 35 to 55wt% of aromatic diisocyanate, 35 to 55wt% of polyoxyalkylene glycol, and 3 to 15wt% of a plasticizer including a main agent comprising an isocyanate prepolymer; and 65 to 85 wt of polyols comprising at least one of polyoxypropylene glycol having a functional group of 2 to 3, a molecular weight of 200 to 5000, and a hydroxyl group of 20 to 300, and a polyoxypropylene triol having a functional group of 3, a molecular weight of 400 to 5000, and a hydroxyl group of 40 to 700. %; and a curing agent mixture comprising 15 to 35 wt% of a chain extender consisting of at least one of polyester polyol and amine chain extenders, wherein the volume ratio of the subject: curing agent mixture is 1:0.9 to 1: 1.1. has been disclosed.

또한, 등록특허 제10-2133243호에서는 N,N-디메틸사이클로헥실아민 41~50중량부와, 1,2-프로판디올디아세테이트 21~30중량부와, 폴리(헥사메틸렌디아이소시안산) 21~30중량부를 포함하는 제1혼합물과; 물 41 내지 50중량부와, 체질안료 1~10중량부와, 방향족 경질 나프타 용매 1~10중량부와, 1-부톡시-2-프로판올(1-butoxy-2-propanol) 1~10중량부와, 충진재 11~21중량부와, 2-다이메틸아미노에탄올 0.1~1중량부와, 트라이에탄올아민 1~10중량부를 포함하는 제2혼합물;로 이루어지고, 상기 제1혼합물과, 제2혼합물은 4~5 : 1의 부피비로 혼합되는 것을 특징으로 중방식용 수용성 도장재가 개시되어 있다.In addition, in Patent No. 10-2133243, 41 to 50 parts by weight of N,N-dimethylcyclohexylamine, 21 to 30 parts by weight of 1,2-propanediol diacetate, and 21 to poly(hexamethylene diisocyanic acid) A first mixture comprising 30 parts by weight; 41 to 50 parts by weight of water, 1 to 10 parts by weight of an extender, 1 to 10 parts by weight of an aromatic light naphtha solvent, and 1 to 10 parts by weight of 1-butoxy-2-propanol And, 11 to 21 parts by weight of the filler, 0.1 to 1 parts by weight of 2-dimethylaminoethanol, and a second mixture comprising 1 to 10 parts by weight of triethanolamine; Consisting of, the first mixture and the second mixture A water-soluble coating material for heavy corrosion protection is disclosed, characterized in that silver is mixed in a volume ratio of 4-5:1.

대한민국 등록특허 제10-1371224호Republic of Korea Patent No. 10-1371224 대한민국 등록특허 제10-1310615호Republic of Korea Patent No. 10-1310615 대한민국 등록특허 제10-1170794호Republic of Korea Patent No. 10-1170794 대한민국 등록특허 제10-0764081호Republic of Korea Patent Registration No. 10-0764081 대한민국 등록특허 제10-2133243호Republic of Korea Patent Registration No. 10-2133243

본 발명은 상기한 바와 같은 종래 기술의 문제점을 해결하기 위한 것으로서,본 발명의 목적은 내후성, 내구성, 내수성, 내습성, 내산성, 내알칼리성 등의 물성이 우수하며, 일반 우레탄계 보다 월등한 초내후성 기능을 보유하여 장기간에 걸쳐 매우 우수한 방식성을 유지할 수 있는 친환경 세라믹계 도장재 조성물 및 이를 이용한 강구조물 도장방법을 제공하고자 한다.The present invention is to solve the problems of the prior art as described above, and an object of the present invention is to have excellent physical properties such as weather resistance, durability, water resistance, moisture resistance, acid resistance, alkali resistance, etc. It is intended to provide an eco-friendly ceramic-based coating material composition that can maintain very good corrosion resistance over a long period of time by holding

본 발명의 해결하고자 하는 과제는 이상에서 언급된 것들에 한정되지 않으며, 언급되지 아니한 다른 해결과제들은 아래의 기재로부터 당업자에게 명확하게 이해되어 질 수 있을 것이다.The problems to be solved by the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

상기한 목적을 달성하기 위하여 본 발명에 따른 친환경 중방식용 도장방법은 도장대상 구조물의 표면에 하도층을 형성하는 S1단계와; 상기 하도층의 표면에 중도층을 형성하는 S2단계와; 상기 중도층의 표면에 상도층을 형성하는 S3단계;를 포함하며, 상기 하도층은 프로필렌 글리콜 메틸 에테르 40~50중량부와, 3-아미노프로필트리에톡시실란 30~40중량부와, 인산아연 15~30중량부와, 부틸 아크릴레이트 10~20중량부와, 2-프로판올 5~15중량부와, 에틸벤젠 3~10중량부와, 알킬암모늄염 1~5중량부와, 실리카 1~5중량부를 포함하여 이루어지는 것을 특징으로 한다.In order to achieve the above object, an environmentally friendly medium-proof coating method according to the present invention includes: S1 step of forming an undercoat layer on the surface of a structure to be painted; S2 step of forming an intermediate layer on the surface of the undercoat layer; Including; step S3 of forming a top coat layer on the surface of the intermediate layer, wherein the undercoat layer comprises 40 to 50 parts by weight of propylene glycol methyl ether, 30 to 40 parts by weight of 3-aminopropyltriethoxysilane, and zinc phosphate 15-30 parts by weight, 10-20 parts by weight of butyl acrylate, 5-15 parts by weight of 2-propanol, 3-10 parts by weight of ethylbenzene, 1-5 parts by weight of an alkylammonium salt, and 1-5 parts by weight of silica It is characterized in that it comprises a part.

또한, 본 발명에 따른 친환경 중방식용 도장방법에 있어서, 중도층은 에폭시 수지 50~60 중량부와, 4,4'디페닐메탄디이소시아네이트 20~30중량부와, 에틸벤젠 10~30중량부와, 폴리프로필렌 디아민 5~15중량부와, 석회석 5~15중량부와, 이산화 티타늄 5~15중량부와, 2-하이드록시에틸메타크릴레이트 3~10중량부와, 디메틸 아닐린 1~3중량부와, 과산화벤조일 1~3중량부를 포함하여 이루어지는 것을 특징으로 한다.In addition, in the eco-friendly medium-corrosion coating method according to the present invention, the intermediate layer comprises 50 to 60 parts by weight of an epoxy resin, 20 to 30 parts by weight of 4,4'diphenylmethane diisocyanate, 10 to 30 parts by weight of ethylbenzene and , 5-15 parts by weight of polypropylene diamine, 5-15 parts by weight of limestone, 5-15 parts by weight of titanium dioxide, 3-10 parts by weight of 2-hydroxyethyl methacrylate, and 1-3 parts by weight of dimethyl aniline And, characterized in that it comprises 1 to 3 parts by weight of benzoyl peroxide.

또한, 본 발명에 따른 친환경 중방식용 도장방법에 있어서, 상도층은 2-하이드록시에틸메타크릴레이트 40~50중량부와, 페닐트리메톡시실란 15~35중량부와, 메틸메타크릴레이트 10~30중량부와, 인산아연 10~20중량부와, 에틸벤젠 10~20중량부와, 이산화 티타늄 5~15중량부 5~10중량부와, 아크릴산 5~10중량부를 포함하여 이루어지는 것을 특징으로 한다.In addition, in the eco-friendly medium-corrosion coating method according to the present invention, the top coat layer is 40 to 50 parts by weight of 2-hydroxyethyl methacrylate, 15 to 35 parts by weight of phenyltrimethoxysilane, and 10 to methyl methacrylate 30 parts by weight, 10-20 parts by weight of zinc phosphate, 10-20 parts by weight of ethylbenzene, 5-15 parts by weight of titanium dioxide 5-10 parts by weight, and 5-10 parts by weight of acrylic acid .

본 발명에서 제안하고 있는 친환경 세라믹계 도장재 조성물 및 이를 이용한 강구조물 도장방법에 의하면, 내후성, 내구성, 내수성, 내습성, 내산성, 내알칼리성 등의 물성이 우수하며, 일반 우레탄계 보다 월등한 초내후성 기능을 보유하여 장기간에 걸쳐 매우 우수한 방식성을 유지할 수 있는 효과가 있다.According to the eco-friendly ceramic coating material composition proposed in the present invention and the steel structure coating method using the same, physical properties such as weather resistance, durability, water resistance, moisture resistance, acid resistance, alkali resistance, etc. are excellent, and it has a superior weather resistance function than general urethane type Thus, there is an effect of maintaining very good corrosion resistance over a long period of time.

본 발명의 효과는 이상에서 언급된 것들에 한정되지 않으며, 언급되지 아니한 다른 효과들은 아래의 기재로부터 당업자에게 명확하게 이해되어 질 수 있을 것이다.Effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

이하 본 발명의 바람직한 실시예에 대하여 구체적으로 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail.

본 발명을 설명함에 있어서, 관련된 공지기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명은 생략한다. 또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 판례 등에 따라 달라질 수 있다. 그러므로 그 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.In describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or precedents of users and operators. Therefore, the definition should be made based on the content throughout this specification.

본 발명에 따른 친환경 중방식용 도장재는 크게 하도층을 형성하는 하도용 조성물과, 중도층을 형성하는 중도용 조성물과, 상도층을 형성하는 상도용 조성물로 구성되는 것으로서, 기존의 유성도료에 비해 건조성, 내수성, 내약품성, 내후성 및 광택보존력이 우수하고 강인하며 단단한 도막을 형성한다. 이러한 본 발명의 도장재는 화학약품공장, 제지공장, 각종 파이프라인, 탱크외부, 교량 연결판 및 볼트와 같이 중방식용 구조물의 마감용 상도도료로 이용되는 것을 예시할 수 있다.The eco-friendly medium-corrosion coating material according to the present invention is largely composed of a composition for undercoating forming an undercoat layer, a composition for a middle coat forming an intermediate layer, and a composition for topcoating forming a topcoat layer, and is dry compared to conventional oil-based paints. It has excellent composition, water resistance, chemical resistance, weather resistance and gloss retention, and forms a strong and hard coating film. The coating material of the present invention can be exemplified as being used as a top coat for finishing heavy-duty structures such as chemical plants, paper mills, various pipelines, outside tanks, bridge connecting plates, and bolts.

본 발명의 하도용 조성물은 상기 하도용 조성물은 세라믹 수지를 주 바인더로 하고 고순도의 아연분말을 사용함으로써 실록산-징크 결합을 형성하는 것으로서, 보다 구체적으로는 프로필렌 글리콜 메틸 에테르 40~50중량부와, 3-아미노프로필트리에톡시실란 30~40중량부와, 인산아연 15~30중량부와, 부틸 아크릴레이트 10~20중량부와, 2-프로판올 5~15중량부와, 에틸벤젠 3~10중량부와, 알킬암모늄염 1~5중량부와, 실리카 1~5중량부를 포함하여 이루어지는 것을 예시할 수 있다.The composition for undercoating of the present invention forms a siloxane-zinc bond by using a ceramic resin as a main binder and high purity zinc powder, and more specifically 40 to 50 parts by weight of propylene glycol methyl ether; 30-40 parts by weight of 3-aminopropyltriethoxysilane, 15-30 parts by weight of zinc phosphate, 10-20 parts by weight of butyl acrylate, 5-15 parts by weight of 2-propanol, and 3-10 parts by weight of ethylbenzene Part, 1 to 5 parts by weight of an alkylammonium salt, and 1 to 5 parts by weight of silica can be exemplified.

본 발명의 중도용 조성물은 에폭시 및 우레탄 결합이 이루어지는 변성 에폭시 수지를 주 바인더로 하고, 석회석과 이산화 티탄늄 등이 함유된 것으로서, 보다 구체적으로는 에폭시 수지 50~60 중량부와, 4,4'디페닐메탄디이소시아네이트 20~30중량부와, 에틸벤젠 10~30중량부와, 폴리프로필렌 디아민 5~15중량부와, 석회석 5~15중량부와, 이산화 티타늄 5~15중량부와, 2-하이드록시에틸메타크릴레이트 3~10중량부와, 디메틸 아닐린 1~3중량부를 포함하여 이루어지는 것을 예시할 수 있다.The composition for intermediate use of the present invention uses a modified epoxy resin having an epoxy and urethane bond as a main binder, and contains limestone and titanium dioxide, and more specifically, 50 to 60 parts by weight of an epoxy resin, and 4,4' 20-30 parts by weight of diphenylmethane diisocyanate, 10-30 parts by weight of ethylbenzene, 5-15 parts by weight of polypropylene diamine, 5-15 parts by weight of limestone, 5-15 parts by weight of titanium dioxide, 2- What consists of 3-10 weight part of hydroxyethyl methacrylate and 1-3 weight part of dimethyl aniline can be illustrated.

본 발명의 상도용 조성물은 아크릴 계열 수지를 주 바인더로 하여 방청 성능을 가진 아연 분말과 결합하는 것으로서, 보다 구체적으로는 2-하이드록시에틸메타크릴레이트 40~50중량부와, 페닐트리메톡시실란 15~35중량부와, 메틸메타크릴레이트 10~30중량부와, 인산아연 10~20중량부와, 에틸벤젠 10~20중량부와, 이산화 티타늄 5~15중량부 5~10중량부와, 아크릴산 5~10중량부와, 과산화벤조일 1~5중량부를 포함하여 이루어지는 것을 예시할 수 있다.The composition for top coating of the present invention uses an acrylic resin as a main binder and is combined with zinc powder having anti-rust performance. More specifically, 40-50 parts by weight of 2-hydroxyethyl methacrylate and phenyltrimethoxysilane 15 to 35 parts by weight, 10 to 30 parts by weight of methyl methacrylate, 10 to 20 parts by weight of zinc phosphate, 10 to 20 parts by weight of ethylbenzene, 5 to 15 parts by weight of titanium dioxide 5 to 10 parts by weight; 5 to 10 parts by weight of acrylic acid and 1 to 5 parts by weight of benzoyl peroxide can be exemplified.

이하에서는 본 발명에 따른 하도용, 중도용 및 상도용 조성물에 대한 보다 바람직한 실시예를 통해 본 발명을 보다 상세히 살펴보도록 한다.Hereinafter, the present invention will be described in more detail through more preferred examples of the composition for undercoating, middlecoating and topcoating according to the present invention.

프로필렌 글리콜 메틸 에테르 50중량부와, 3-아미노프로필트리에톡시실란 30중량부와, 인산아연 25중량부와, 부틸 아크릴레이트 15중량부와, 2-프로판올 10중량부와, 에틸벤젠 3중량부와, 알킬암모늄염 1중량부와, 실리카 1중량부로 이루어지는 하도용 조성물을 마련한다.50 parts by weight of propylene glycol methyl ether, 30 parts by weight of 3-aminopropyltriethoxysilane, 25 parts by weight of zinc phosphate, 15 parts by weight of butyl acrylate, 10 parts by weight of 2-propanol, and 3 parts by weight of ethylbenzene A composition for undercoating comprising 1 part by weight of an alkylammonium salt and 1 part by weight of silica is prepared.

에폭시 수지 50중량부와, 4,4'디페닐메탄디이소시아네이트 25중량부와, 에틸벤젠 20중량부와, 폴리프로필렌 디아민 10중량부와, 석회석 10중량부와, 이산화 티타늄 5중량부와, 2-하이드록시에틸메타크릴레이트 5중량부와, 디메틸 아닐린 1중량부와, 과산화벤조일 1중량부로 이루어지는 중도용 조성물을 마련한다.50 parts by weight of an epoxy resin, 25 parts by weight of 4,4' diphenylmethane diisocyanate, 20 parts by weight of ethylbenzene, 10 parts by weight of polypropylene diamine, 10 parts by weight of limestone, 5 parts by weight of titanium dioxide, 2 - Prepare a composition for intermediate use consisting of 5 parts by weight of hydroxyethyl methacrylate, 1 part by weight of dimethyl aniline, and 1 part by weight of benzoyl peroxide.

2-하이드록시에틸메타크릴레이트 50중량부와, 페닐트리메톡시실란 25중량부와, 메틸메타크릴레이트 10중량부와, 인산아연 15중량부와, 에틸벤젠 15중량부와, 이산화 티타늄 5중량부 5~10중량부와, 아크릴산 5중량부로 이루어지는 상도용 조성물을 마련한다.50 parts by weight of 2-hydroxyethyl methacrylate, 25 parts by weight of phenyltrimethoxysilane, 10 parts by weight of methyl methacrylate, 15 parts by weight of zinc phosphate, 15 parts by weight of ethylbenzene, and 5 parts by weight of titanium dioxide A composition for top coat comprising 5 to 10 parts by weight and 5 parts by weight of acrylic acid is prepared.

[실험예 1][Experimental Example 1]

본 실험예는 실시예 2에 따른 조성물의 물성시험에 대한 것으로서, 그 결과는 아래 표 1에 정리하였다.This experimental example relates to the physical property test of the composition according to Example 2, and the results are summarized in Table 1 below.

항목item 품질기준Quality standards 측정결과Measurement result 방법Way 광택(60 ˚, %)Gloss (60 ˚, %) 70 이상over 70 8585 KS M ISO 2813KS M ISO 2813 건조시간(경화,h,25℃)Drying time (curing, h, 25℃) 24 이상24 or more 15 시간15 hours -- 가사시간(경화,h,20℃)Pot life (curing, h, 20℃) 2 이상2 or more 2 시간2 hours -- 흐름성(혼합, ㎛)Flowability (mixed, μm) 175 이상175 or more 230230 KS M 5980KS M 5980 은폐율(%),백색Concealment rate (%), white 90 이상over 90 9393 KS M ISO 2814KS M ISO 2814 촉진 내후성
(300h, (%))accelerated weathering
(300h, (%)) 90 이상over 90 9898 KS M ISO 11507KS M ISO 11507

[실험예 2][Experimental Example 2]

본 실험예는 실시예 3에 따른 조성물의 물성시험에 대한 것으로서, 그 결과는 아래 표 2에 정리하였다.This experimental example relates to the physical property test of the composition according to Example 3, and the results are summarized in Table 2 below.

항목item 품질기준Quality standards 측정결과Measurement result 방법Way 광택(60 ˚, %)Gloss (60 ˚, %) 70 이상over 70 8787 KS M ISO 2813KS M ISO 2813 건조시간(경화,h,25℃)Drying time (curing, h, 25℃) 24 이상24 or more 16 시간16 hours -- 가사시간(경화,h,20℃)Pot life (curing, h, 20℃) 2 이상2 or more 4 시간4 hours -- 흐름성(혼합, ㎛)Flowability (mixed, μm) 175 이상175 or more 330330 KS M 5980KS M 5980 은폐율(%),백색Concealment rate (%), white 90 이상over 90 9696 KS M ISO 2814KS M ISO 2814 촉진 내후성
(300h, (%))accelerated weathering
(300h, (%)) 90 이상over 90 9999 KS M ISO 11507KS M ISO 11507

이하에서는, 본 발명에 따른 중방식용 수용성 도장재를 이용한 스프레이형 중방식용 도장방법을 살펴보도록 한다. 본 발명의 도장방법은 크게 도장대상 구조물의 표면에 하도층을 형성하는 S1단계와, 상기 하도층의 표면에 중도층을 형성하는 S2단계와, 상기 중도층의 표면에 상도층을 형성하는 S3단계를 포함하는 것으로서, S1단계 내지 S3단계는 에어리스 또는 일반 스프레이를 이용하여 도장할 수 있다.Hereinafter, a spray-type medium-corrosion coating method using a water-soluble coating material for medium-duty corrosion-resistance according to the present invention will be described. The coating method of the present invention largely comprises a step S1 of forming an undercoat layer on the surface of the structure to be painted, a step S2 of forming an intermediate layer on the surface of the undercoat layer, and a step S3 of forming a topcoat layer on the surface of the intermediate layer. As including, steps S1 to S3 may be coated using airless or general spray.

철판 표면에 실시예 1의 하도용 조성물, 실시예 2의 중도용 조성물 및 실시예 3의 상도용 조성물을 순차적으로 스프레이 도장하여 하도층 60㎛, 중도층 50㎛ 및 상도층 40㎛를 형성하였다.The undercoating composition of Example 1, the intermediate coating composition of Example 2, and the topcoating composition of Example 3 were sequentially spray-coated on the surface of the iron plate to form an undercoat layer of 60 µm, an intermediate layer of 50 µm, and a top coat of 40 µm.

[실험예 2][Experimental Example 2]

실시예 4의 도막에 대하여 하기 표 3에 나타낸 바와 같은 시험을 하였으며, 구체적으로 내식성(염해방지성능평가) 시험으로 1000시간 동안 염수를 분무하여 그 결과를 시험하였고, 도막의 부착강도, 신장률(내굴곡성), MVTR(습기투과성) 실험 결과이다.The coating film of Example 4 was tested as shown in Table 3 below, and specifically, the results were tested by spraying salt water for 1000 hours as a corrosion resistance (salt damage prevention performance evaluation) test, and the adhesion strength, elongation (resistance) of the coating film flexibility) and MVTR (moisture permeability) test results.

항목item 측정결과Measurement result 방법Way 발청rust 0.1% 이하0.1% or less ASTM D610ASTM D610 발청부위파단Breaking of the hearing site 0.1mm0.1mm ASTM D1654-편측ASTM D1654 - One Side 발청부위 블리스터링blistering of the affected area 0.1mm 이하0.1mm or less ASTM D714ASTM D714 부착강도Adhesive strength 45kgf/㎠45kgf/cm2 KSM6715-01KSM6715-01 내산성(KSM
SIO2812-1-02)Acid resistance (KSM)
SIO2812-1-02) 이상없음clear KSM SIO2812-1-02KSM SIO2812-1-02 내굴곡성Flexibility 이상없음clear KS M 5000-03, Φ10㎜,180°굴곡KS M 5000-03, Φ10㎜, 180° bend 내수성water resistance 이상없음clear KSM
SIO2812-2-02KSM
SIO2812-2-02

위 표 3에서 나타난 바와 같이, 본 발명에 따른 중방식 도장방법은 내식성, 부착강도 및 내수성 등의 물성이 우수함을 알 수 있다.As shown in Table 3 above, it can be seen that the medium coating method according to the present invention has excellent physical properties such as corrosion resistance, adhesion strength and water resistance.

이상에서 설명된 본 발명은 예시적인 것에 불과하며, 본 발명이 속한 기술분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 잘 알 수 있을 것이다. 그러므로 본 발명은 상기의 상세한 설명에서 언급되는 형태로만 한정되는 것은 아님을 잘 이해할 수 있을 것이다. 따라서 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의해 정해져야 할 것이다. 또한, 본 발명은 첨부된 청구범위에 의해 정의되는 본 발명의 정신과 그 범위 내에 있는 모든 변형물과 균등물 및 대체물을 포함하는 것으로 이해되어야 한다.The present invention described above is merely exemplary, and those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, it will be well understood that the present invention is not limited to the form mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. Moreover, it is to be understood that the present invention covers all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

Claims (4)

도장대상 구조물의 표면에 하도층을 형성하는 S1단계와;
상기 하도층의 표면에 중도층을 형성하는 S2단계와;
상기 중도층의 표면에 상도층을 형성하는 S3단계;를 포함하며,
상기 하도층은,
프로필렌 글리콜 메틸 에테르 40~50중량부와, 3-아미노프로필트리에톡시실란 30~40중량부와, 인산아연 15~30중량부와, 부틸 아크릴레이트 10~20중량부와, 2-프로판올 5~15중량부와, 에틸벤젠 3~10중량부와, 알킬암모늄염 1~5중량부와, 실리카 1~5중량부를 포함하여 이루어지며;
상기 중도층은,
에폭시 수지 50~60 중량부와, 4,4'디페닐메탄디이소시아네이트 20~30중량부와, 에틸벤젠 10~30중량부와, 폴리프로필렌 디아민 5~15중량부와, 석회석 5~15중량부와, 이산화 티타늄 5~15중량부와, 2-하이드록시에틸메타크릴레이트 3~10중량부와, 디메틸 아닐린 1~3중량부와, 과산화벤조일 1~3중량부를 포함하여 이루어지는 것을 특징으로 하는 중방식용 도장방법.
S1 step of forming an undercoat layer on the surface of the structure to be painted;
S2 step of forming an intermediate layer on the surface of the undercoat layer;
Including; S3 step of forming a top coat layer on the surface of the intermediate layer,
The undercoat layer is
40 to 50 parts by weight of propylene glycol methyl ether, 30 to 40 parts by weight of 3-aminopropyltriethoxysilane, 15 to 30 parts by weight of zinc phosphate, 10 to 20 parts by weight of butyl acrylate, 5 to 2-propanol 15 parts by weight, 3 to 10 parts by weight of ethylbenzene, 1 to 5 parts by weight of an alkylammonium salt, and 1 to 5 parts by weight of silica;
The middle layer is
50-60 parts by weight of epoxy resin, 20-30 parts by weight of 4,4'diphenylmethane diisocyanate, 10-30 parts by weight of ethylbenzene, 5-15 parts by weight of polypropylene diamine, and 5-15 parts by weight of limestone And, 5 to 15 parts by weight of titanium dioxide, 3 to 10 parts by weight of 2-hydroxyethyl methacrylate, 1 to 3 parts by weight of dimethyl aniline, and 1 to 3 parts by weight of benzoyl peroxide. Edible coating method.
 청구항 1의 방법으로 형성된 중방식용 도막.

A medium-corrosive coating film formed by the method of claim 1.

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