KR101799507B1 - Eco-friendly steel coating composition for surface protecting and strengthening of steel structures, and method for surface protecting and strengthening of steel structures therewith - Google Patents

Eco-friendly steel coating composition for surface protecting and strengthening of steel structures, and method for surface protecting and strengthening of steel structures therewith Download PDF

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KR101799507B1
KR101799507B1 KR1020170103915A KR20170103915A KR101799507B1 KR 101799507 B1 KR101799507 B1 KR 101799507B1 KR 1020170103915 A KR1020170103915 A KR 1020170103915A KR 20170103915 A KR20170103915 A KR 20170103915A KR 101799507 B1 KR101799507 B1 KR 101799507B1
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South Korea
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weight
steel
coating composition
performance improving
coating agent
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KR1020170103915A
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Korean (ko)
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인기환
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주식회사 현대씨앤엠
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    • C09D7/1216—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/002—Pretreatement
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    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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    • C08L27/00—Compositions of 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 a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of 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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of 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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
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    • C09D125/00—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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
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    • C09D127/00—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 a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/04—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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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    • 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
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    • 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
    • C09D133/24—Homopolymers or copolymers of amides or imides
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    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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    • C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
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    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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Abstract

The present invention relates to an eco-friendly steel coating agent composition for protecting and strengthening the surface of a steel structure, and a method of protecting and strengthening the surface of the steel structure using the eco-friendly steel coating agent composition. The eco-friendly steel coating agent composition of the present invention comprises 1 to 60 wt% of a performance improving filler and 40 to 99 wt% of a performance improving admixture. The performance improving admixture includes: 50 to 99 wt% of a water-soluble epoxy; 0.1 to 25 wt% of a methylacrylate-styrene copolymer; 0.1 to 15 wt% of polyvinyl chloride; 0.01 to 10 wt% of melamine; 0.01 to 10 wt% of zircoaluminate; 0.01 to 10 wt% of ethyl cellulose; and 0.01 to 10 wt% of polyacrylamide with respect to the weight of the performance improving admixture. The eco-friendly steel coating agent composition according to the present invention has effects that the steel coating agent composition not only prevents corrosion and the like of structures made of steel including a steel structure, a temporary bridge, a steel bridge, multi-bed plates and a road facility structure, but also can remarkably reduce maintenance costs used in the steel coating agent composition. Further, the eco-friendly steel coating agent composition according to the present invention has an eco-friendly effect since the steel coating agent composition not only can express heat-resisting and rust-preventing functions of a surface protection material, but also is safe to the human body without eluting harmful heavy metals.

Description

강구조물 표면 보호·강화용 친환경 강재 코팅제 조성물 및 이를 이용한 강 구조물의 표면 보호·강화 방법{ECO-FRIENDLY STEEL COATING COMPOSITION FOR SURFACE PROTECTING AND STRENGTHENING OF STEEL STRUCTURES, AND METHOD FOR SURFACE PROTECTING AND STRENGTHENING OF STEEL STRUCTURES THEREWITH}Technical Field [0001] The present invention relates to an eco-friendly steel coating composition for protecting and reinforcing a steel structure surface, and a surface protecting and reinforcing method for steel structures using the same. BACKGROUND ART < RTI ID = 0.0 >

본 발명은 강도, 접착력, 자외선 저항성, 내염해성, 내식성, 내약품성, 내후성, 내열성, 내구성 등이 우수한 강구조물 표면 보호·강화용 친환경 강재 코팅제 조성물 및 이를 이용한 강 구조물의 표면보호·강화 방법에 관한 것이다.TECHNICAL FIELD The present invention relates to an environmentally friendly steel coating composition for protecting and strengthening a steel structure surface having excellent strength, adhesion, ultraviolet ray resistance, salt resistance, corrosion resistance, chemical resistance, weather resistance, heat resistance and durability and a method for protecting and strengthening steel structures using the composition .

일반적으로 각종 금속 또는 콘크리트 구조물의 부식 및 침식을 방지하기 위한 코팅재료로서는, 주로 에폭시계 수지를 이용한 코팅제가 사용되어 왔으나, 상기와 같은 에폭시계 수지의 코팅제는 모재에 대한 강한 접착력과 내구력 향상과 함께 부식 및 침식 등을 방지하기 위하여 지르코늄, 아연 분말 등과 같은 금속성 필러를 첨가시키는데, 이와 같은 충전재들은 코팅 도막에서 완전한 층을 형성시키지 못하기 때문에 코팅 후 침식 및 부식으로부터 완전한 보호가 되지 않아 도막층과 금속 또는 콘크리트 구조물과의 접착력의 저하 등과 같은 문제점뿐만 아니라, 상기와 같이 종래의 코팅제에 금속성 필러 또는 불활성 필러 등과 같은 충전재를 첨가시킬 경우에는 코팅제에 함유된 충전재들에 의해 기계적 가공이나 작업성이 떨어지는 등의 문제점들도 발생하였다.As a coating material for preventing corrosion and erosion of various metal or concrete structures, a coating agent mainly using an epoxy resin has been used. However, the coating agent of the epoxy resin as described above has a strong adhesion to the base material, In order to prevent corrosion and erosion, metallic fillers such as zirconium and zinc powder are added. Since these fillers do not form a complete layer in the coating film, they are not completely protected from erosion and corrosion after coating, Or adhesion to a concrete structure. In addition, when a filler such as a metallic filler or an inert filler is added to a conventional coating agent as described above, the filler contained in the coating agent may cause mechanical processing or poor workability Problems of It was occurred.

또한, 수성 아크릴계열, SBR(Styrene-Butadiene Rubber) 라텍스 계열, 폴리메틸아크릴레이트-스티렌 계열 등을 원료로 하는 도장재는 어느 정도의 습윤 조건에서도 작업이 가능하고 시멘트와의 결합성도 있어 기존 도장재의 문제점을 극복하기 위해 많이 검토되어 왔지만, 부식성분의 차단성능, 내수성, 내후성, 부착성 및 도막 자체의 역학적 성능(인장, 인열강도)이 떨어져 사용에 제약을 받아왔으며 열화환경이나 내구성능이 요구되는 부위에는 주로 유기계 도막제가 사용되어져 왔다.In addition, paints made from water-based acrylics, styrene-butadiene rubber (SBR) latexes, polymethyl acrylate-styrenes, etc., can work under certain wetting conditions and have bondability with cement. (Tensile strength, tear strength) of the coating film itself has been limited due to the deterioration of the corrosion property of the corrosion component, the water resistance, the weather resistance, the adhesion property and the coating film itself, and the deterioration environment and durability An organic coating film has been mainly used.

그러나 오늘날 세계적인 환경보호 추세와 더불어 중금속이나 휘발성 유기화합물의 방출이 없는 친환경적인 무기질 바인더 도막제의 개발에 많은 연구가 진행되어오고 있는 실정이며, 종래의 유기바인더 도막제는 경화 시 휘발성 유기 화합물의 방출과 경화 후의 다양한 환경요소, 특히 산성비, 자동차 배기가스에 의한 질소산화물, 황산화물 및 해양환경에서의 염소이온 등에 의해 도막제가 열화되며, 자외선에 의한 황변현상, 갈라짐, 부풀어 오름 현상에 의해 사용수명이 빠르게 떨어져 내구성의 확보에 어려움이 대두되고 있는 실정이다.However, in recent years, there have been a lot of researches on development of environmentally friendly inorganic binder coating agents that do not release heavy metals or volatile organic compounds with global environmental protection trends. Conventional organic binder coating agents have a problem in that they emit volatile organic compounds The coating film is deteriorated by various environmental factors after curing, in particular, acid rain, nitrogen oxides due to automobile exhaust gas, sulfur oxides and chlorine ions in the marine environment, and yellowing phenomenon, cracking and swelling phenomenon due to ultraviolet rays So it is difficult to secure durability.

대한민국 등록특허 제10-1458744호(2014년 11월 05일 공고)Korean Registered Patent No. 10-1458744 (published on Nov. 05, 2014) 대한민국 등록특허 제10-1574685호(2015년 12월 04일 공고)Korean Patent No. 10-1574685 (issued on December 04, 2015) 대한민국 등록특허 제10-1687672호(2016년 12월 19일 공고)Korean Patent No. 10-1687672 (issued on December 19, 2016)

본 발명이 해결하고자 하는 과제는 강도 및 내구성이 우수한 성능개선 충전재와 접착력, 내식성, 자외선 저항성, 내열성, 내구성이 우수한 성능개선 혼화제 등을 사용한 강재 구조물 표면 보호·강화용 친환경 강재 코팅제 조성물 및 이를 이용한 강 구조물의 표면보호·강화 방법을 제공함에 있다.An object of the present invention is to provide an environmentally friendly steel coating composition for surface protection and reinforcement of a steel structure using a performance improving filler excellent in strength and durability and a performance improving admixture excellent in adhesion, corrosion resistance, ultraviolet ray resistance, heat resistance and durability, And a method for protecting and strengthening the surface of the structure.

본 발명의 친환경 강재 코팅제 조성물은 성능개선 충전재 1∼60중량% 및 성능개선 혼화제 40∼99중량%를 포함하고, 상기 성능개선 충전재는 성능개선 충전재 중량대비 중질탄산칼슘 5∼85중량%, 깁사이트 1∼25중량%, 탄산마그네슘 0.1∼15중량%, 플루오린화나트륨 0.1∼15중량%, 규산염 0.01∼10중량%, 실리카겔 0.01∼10중량% 및 카올린 0.01∼10중량%를 포함하여 이루어지고, 상기 성능개선 혼화제는, 성능개선 혼화제 중량대비 수용성 에폭시 50∼99중량%, 메틸아크릴레이트-스티렌 공중합체 0.1∼25중량%, 폴리비닐클로라이드 0.1∼15중량%, 멜라민 0.01~10중량%, 지르코알루미네이트 0.01~10중량%, 에틸셀롤로오스 0.01∼10중량% 및 폴리아크릴아미드 0.01~10중량%를 포함하여 이루어진다.The environmentally friendly steel coating composition of the present invention comprises 1 to 60% by weight of a performance improving filler and 40 to 99% by weight of a performance improving admixture, wherein the performance improving filler comprises 5 to 85% by weight of heavy calcium carbonate, 1 to 25 wt%, magnesium carbonate 0.1 to 15 wt%, sodium fluoride 0.1 to 15 wt%, silicate 0.01 to 10 wt%, silica gel 0.01 to 10 wt%, and kaolin 0.01 to 10 wt% The performance improving admixture comprises 50 to 99% by weight of water-soluble epoxy, 0.1 to 25% by weight of methyl acrylate-styrene copolymer, 0.1 to 15% by weight of polyvinyl chloride, 0.01 to 10% by weight of melamine, 0.01 to 10% by weight of nate, 0.01 to 10% by weight of ethylcellulose, and 0.01 to 10% by weight of polyacrylamide.

상기 성능개선 충전재는 질화알루미늄을 더 포함할 수 있다.The performance improving filler may further include aluminum nitride.

또한, 상기 성능개선 충전재는 징크옥사이드를 더 포함할 수 있다.In addition, the performance improving filler may further include zinc oxide.

상기 성능개선 혼화제는 경화촉진제, 반응개시제, 폴리아미드, 안료, 소포제 중 선택된 어느 하나 이상을 더 포함할 수 있다.The performance improving admixture may further include at least one selected from a curing accelerator, a reaction initiator, a polyamide, a pigment, and a defoaming agent.

본 발명의 강 구조물의 표면보호·강화 방법은 샌드블라스터, 워터블라스터 등으로 강 구조물의 녹, 이물질 등을 제거하는 단계; 상기 제거된 부위의 홈, 스크레치 등을 퍼티재로 도포하여 평탄하도록 바탕면을 처리하는 단계; 상기 처리된 바탕면에 프라이머층을 형성하는 단계; 상기 프라이머층 상부에 상기 강구조물 표면보호용 강재 도장재 조성물을 도포하여 양생하는 단계; 및 양생된 후 표면 마감 코팅제를 도포하는 단계를 포함하여 이루어진다.The method for protecting and strengthening a steel structure according to the present invention includes the steps of removing rust, foreign matter, and the like of a steel structure with a sandblaster or a water blaster; Applying a groove, a scratch, or the like of the removed portion with a putty material and treating the ground surface so as to be flat; Forming a primer layer on the treated substrate; Coating a steel coating composition for protecting the steel structure surface on the primer layer to cure; And applying a surface finish coating after curing.

상기 표면 마감 코팅제 조성물은 표면 마감 코팅제 조성물 중량 대비 수용성 불소 수지 10~70중량%, 폴리부틸렌테레프탈레이트 (poly butylene terephthalate) 0.1~30중량%, 폴리에틸렌옥사이드 0.1~25중량%, 메틸아크릴레이트-비닐아세테이트 공중합체 0.1~25중량%, 트리페닐메톡시실란 0.01~10중량%, 황산바륨 0.01~10중량%, 지르코알루미네이트 0.01~10중량%, 실리콘 0.01~10중량%, 소포제 0.01~10중량% 및 안료 0.01~10중량%함유되는 것이 바람직하다.Wherein the surface finish coating composition comprises 10 to 70% by weight of water-soluble fluororesin, 0.1 to 30% by weight of polybutylene terephthalate, 0.1 to 25% by weight of polyethylene oxide, 0.1 to 25% by weight of triphenylmethoxysilane, 0.01 to 10% by weight of triphenylmethoxysilane, 0.01 to 10% by weight of barium sulfate, 0.01 to 10% by weight of zirconylate, 0.01 to 10% By weight and 0.01 to 10% by weight of a pigment.

상기 표면 마감 코팅제 조성물은 무기질계 수성실리카졸 표면 마감 코팅제를 병용하여 사용할 수 있다.The surface finish coating composition may be used in combination with an inorganic-based aqueous silica sol surface finish coating agent.

본 발명에 의하면 강 구조물, 강교량, 복상판, 도로 시설 구조물 등 강재로 이루어진 구조물의 부식, 방식 등을 방지함과 아울러, 이에 사용되는 유지관리 비용을 현저히 절감할 수 있는 효과가 있다. 즉, 본 발명의 인장강도, 신률, 내구성이 우수한 친환경 강재 코팅제 조성물에 의하면 강 구조물과의 부착력이 우수하여 바탕면에서 쉽게 박리되거나 도장된 표면에서 쉽게 균열이 발생하는 것을 방지할 수 있다. 또한, 본 발명의 인장강도, 신률, 내구성이 우수한 친환경 강재 코팅제 조성물 및 고친환경 강재 코팅제 조성물에 의하면 내굽힘성 및 내충격성이 우수하여 내구성을 향상시킴과 아울러 강 구조물의 부식, 자외선 및 기타 열화인자를 차단하여 내구성을 증진시킬 수 있다.According to the present invention, it is possible to prevent the corrosion of the structure made of steel such as steel structure, steel bridge, double top plate, road structure, and the like, and to reduce the maintenance cost to be used. That is, according to the eco-friendly steel coating composition composition having excellent tensile strength, elongation, and durability of the present invention, it is possible to prevent cracks from being easily peeled off from the surface of the base or easily cracked on the painted surface. Further, according to the eco-friendly steel coating composition and the highly environment-friendly steel coating composition having excellent tensile strength, elongation and durability of the present invention, the steel sheet has excellent durability and excellent bending resistance and impact resistance, The durability can be improved.

본 발명에 의하면 내열성과 방청 표면보호재의 기능을 함께 발현할 수 있음은 물론이고 유해 중금속의 용출이 없어 인체에 안전한 친환경적인 효과가 있다.According to the present invention, not only the heat resistance and the function of the anti-rusting surface protective material can be expressed together, but also there is no elution of harmful heavy metals, and there is an eco-friendly effect that is safe for the human body.

이하, 본 발명에 따른 바람직한 실시예를 상세하게 설명한다. 그러나 이하의 실시예는 이 기술 분야에서 통상적인 지식을 가진 자에게 본 발명이 충분히 이해되도록 제공되는 것으로서 여러 가지 다른 형태로 변형될 수 있으며, 본 발명의 범위가 다음에 기술되는 실시예에 한정되는 것은 아니다.Hereinafter, preferred embodiments according to the present invention will be described in detail. However, it will be understood by those skilled in the art that the following embodiments are provided so that those skilled in the art will be able to fully understand the present invention, and that various changes and modifications may be made without departing from the scope of the present invention. It is not.

본 발명의 친환경 강재 코팅제 조성물은 성능개선 충전재 1∼60중량% 및 성능개선 혼화제 40∼99중량%를 포함하여 이루어진다.The environmentally friendly steel coating composition of the present invention comprises 1 to 60% by weight of a performance improving filler and 40 to 99% by weight of a performance improving admixture.

상기 성능개선 충전재는 강도, 내식성, 난연성, 내구성 등을 높이기 위한 것으로서, 상기 성능개선 충전재에 대하여 중질탄산칼슘(Ground Calcium Carbonate) 50∼85중량%, 깁사이트 1∼25중량%, 탄산마그네슘 0.1∼15중량%, 플루오린화나트륨 0.1∼15중량%, 규산염 0.01∼10중량%, 실리카겔 0.01∼10중량% 및 카올린 0.01∼10중량%를 포함하는 것이 바람직하다. The performance improving filler is used for enhancing strength, corrosion resistance, flame retardancy, durability and the like. The performance improving filler is mixed with 50 to 85% by weight of ground calcium carbonate, 1 to 25% by weight of gibbsite, 15 to 15 wt% of sodium fluoride, 0.1 to 15 wt% of sodium fluoride, 0.01 to 10 wt% of silicate, 0.01 to 10 wt% of silica gel, and 0.01 to 10 wt% of kaolin.

상기 중질탄산칼슘(Ground Calcium Carbonate)은 충전성, 내충격성, 보온성 및 내화성을 개선하기 위하여 사용된다. 상기 중질탄산칼슘은 상기 성능개선 충전재에 대하여 50~85 중량%함유되는 것이 바람직하며, 상기 중질탄산칼슘의 함량이 85중량%를 초과하면 성능은 개선되나 작업성이 저하되고, 상기 중질탄산칼슘의 함량이 50중량%미만이면 작업성은 개선되나 내충격성, 보온성 및 내화성 개선효과가 미약할 수 있다. 일반적으로 탄산칼슘은 제조방법에 따라 중질탄산칼슘과 경질탄산칼슘의 2가지로 크게 구분된다. 이중 중질탄산칼슘은 석탄석을 분쇄 분급시켜 제조된 탄산칼슘으로 백색도가 높기 때문에, 백색 탄산칼슘으로 불리고, 입경은 대개 5㎛ 이하이며 각종 공업용 필러, 식품첨가물, 의약용에 사용된다.The heavy calcium carbonate (Ground Calcium Carbonate) is used for improving the filling property, the impact resistance, the warming property and the fire resistance. Preferably, the heavy calcium carbonate is contained in an amount of 50 to 85% by weight based on the performance improving filler. When the content of the heavy calcium carbonate exceeds 85% by weight, the performance is improved but the workability is lowered. When the content is less than 50% by weight, the workability is improved but the effect of improving the impact resistance, warmth and fire resistance may be weak. In general, calcium carbonate is divided into two types, heavy calcium carbonate and light calcium carbonate, depending on the production method. The heavy heavy calcium carbonate is calcium carbonate produced by pulverizing and classifying coal seas and is high in whiteness and is called white calcium carbonate. Its particle size is usually 5 μm or less and is used for various industrial fillers, food additives and medicines.

상기 깁사이트(gibbsite)는 회색, 회록색, 회적색 등을 띠며, 강도, 내마모성, 내화성을 개선하기 위하여 사용된다. 상기 깁사이트은 상기 성능개선 충전재에 대하여 1∼25중량% 함유되는 것이 바람직하며, 상기 깁사이트의 함량이 25중량%를 초과하면 내마모성 및 내화성은 개선되나 작업성이 저하될 수 있고, 상기 깁사이트의 함량이 1중량% 미만이면 작업성은 개선되나 내마모성 및 내화성 개선 효과가 미약할 수 있다.The gibbsite is gray, red gray, red, etc., and is used to improve strength, abrasion resistance, and fire resistance. The gibsite is preferably contained in an amount of 1 to 25% by weight based on the performance improving filler, and when the content of the gibbsite exceeds 25% by weight, abrasion resistance and fire resistance are improved but workability may be deteriorated. If the content is less than 1% by weight, the workability is improved, but the effect of improving abrasion resistance and fire resistance may be weak.

상기 탄산마그네슘은 난연성을 개선하기 위하여 사용한다. 상기 탄산마그네슘은 상기 성능개선 충전재에 대하여 0.1∼15중량% 함유되는 것이 바람직하며, 상기 탄산마그네슘의 함량이 15중량%를 초과하면 난연성은 개선되나 작업성 및 강도가 저하될 수 있고, 상기 탄산마그네슘의 함량이 0.1중량% 미만이면 작업성 및 강도는 증가하나 난연 효과가 미약할 수 있다.The magnesium carbonate is used for improving the flame retardancy. The magnesium carbonate is preferably contained in an amount of 0.1 to 15% by weight based on the performance improving filler. If the content of the magnesium carbonate exceeds 15% by weight, the flame retardancy is improved but the workability and strength may be lowered. If the content is less than 0.1 wt%, the workability and strength are increased but the flame retarding effect may be weak.

상기 플루오린화나트륨은 강도, 내식성, 방오, 방부 등의 역할을 위해 사용할 수 있다. 상기 플루오린화나트륨은 상기 성능개선 충전재에 대하여 0.1∼15중량% 함유되는 것이 바람직하다. 상기 플루오린화나트륨의 중량비가 증가하면 강도, 내식, 방오, 방부 성능을 나타내며, 상기 플루오린화나트륨의 함량이 0.1중량% 미만일 경우 강도, 내식, 방오, 방부 성능 효과가 미약할 수 있고, 상기 플루오린화나트륨의 함량이 15중량%를 초과할 경우에는 강도 발현이 저하되고 제조 원가가 높아져 경제적이지 못하다. The sodium fluoride can be used for strength, corrosion resistance, antifouling, antiseptic and the like. The sodium fluoride is preferably contained in an amount of 0.1 to 15% by weight based on the performance improving filler. If the content of sodium fluoride is less than 0.1% by weight, the effect of strength, corrosion resistance, antifouling and antifouling performance may be insignificant. If the content of sodium fluoride is less than 0.1% by weight, When the content of sodium exceeds 15% by weight, the strength is lowered and the production cost is increased, which is not economical.

상기 규산염은 방청 효과를 개선하기 위하여 사용한다. 상기 규산염은 상기 성능개선 충전재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 규산염의 중량비가 증가하면 방청 효과를 나타내며, 상기 규산염의 함량이 0.01중량% 미만일 경우 방청 효과가 미약할 수 있고, 상기 규산염의 함량이 10중량%를 초과할 경우에는 성능은 개선되나 강도 자하가 발생할 수 있다. The silicate is used to improve the anti-corrosive effect. The silicate is preferably contained in an amount of 0.01 to 10% by weight based on the performance improving filler. When the content of the silicate is less than 0.01% by weight, the rust inhibitive effect may be insufficient. When the content of the silicate exceeds 10% by weight, the performance is improved. However, Lt; / RTI >

상기 실리카겔은 그물조직의 규산입자로 흡착재 역할을 수행한다. 이는 수분을 흡수하여 외부의 염분 및 수분이 내부 금속층으로 이동하는 것을 차단하여 강재의 부식을 억제하는 역할을 한다. 상기 실리카겔은 상기 성능개선 충전재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 실리카겔의 함량이 0.01중량% 미만일 경우 염분 및 수분 흡착 및 재료 분리 저항성 개선 효과가 미약할 수 있고, 상기 실리카겔의 함량이 10중량%를 초과할 경우에는 성능은 개선되나 작업성이 저하된다. The silica gel is a silicate particle of a net structure and serves as a sorbent material. It absorbs moisture and blocks external salt and moisture from moving to the inner metal layer, thereby suppressing the corrosion of the steel. The silica gel is preferably contained in an amount of 0.01 to 10% by weight based on the performance improving filler. If the content of the silica gel is less than 0.01% by weight, the effect of improving the salt and moisture adsorption and the material separation resistance may be insignificant. If the content of the silica gel is more than 10% by weight, the performance is improved but the workability is decreased.

상기 카올린은 내수성 및 내화성을 개선하기 위하여 사용된다. 상기 알칼리실리케이트는 상기 성능개선 충전재에 대하여 0.01∼10중량% 함유되는 것이 바람직하며, 상기 카올린의 함량이 10중량%를 초과하면 내수성 및 내화성이 개선되나 가격경쟁력이 저하될 수 있고, 상기 카올린의 함량이 0.01중량% 미만이면 내수성 및 내화성 개선 효과가 미약할 수 있다. The kaolin is used to improve water resistance and fire resistance. The alkali silicate is preferably contained in an amount of 0.01 to 10% by weight based on the performance improving filler, and when the content of the kaolin exceeds 10% by weight, the water resistance and fire resistance are improved but the price competitiveness is lowered. If the content is less than 0.01% by weight, the effect of improving water resistance and fire resistance may be weak.

상기 성능개선 혼화제는 친환경 강재 코팅제 조성물에 대하여 40∼99중량% 함유되는 것이 바람직하다. 상기 성능개선 혼화제의 함량이 99중량%를 초과하면 점도가 낮아져 재료 분리가 발생되기 쉽고, 가격경쟁력이 저하될 수 있다. 그리고, 상기 성능개선 혼화제의 함량이 40중량% 미만이면 가사시간, 작업성, 신률, 유동성, 강도, 접착력, 내산성, 내열성 및 내구성 개선 효과가 미약할 수 있다.The performance improving admixture is preferably contained in an amount of 40 to 99% by weight based on the environmentally friendly steel coating composition. If the content of the performance improving admixture is more than 99% by weight, the viscosity is lowered and the material is easily separated and the price competitiveness may be lowered. If the content of the performance improving admixture is less than 40% by weight, the effect of improving the pot life, workability, elongation, fluidity, strength, adhesive strength, acid resistance, heat resistance and durability may be small.

상기 성능개선 혼화제는 상기 성능개선 혼화제에 대하여 수용성 에폭시 50∼99중량%, 메틸아크릴레이트-스티렌 공중합체 0.1∼25중량%, 폴리비닐클로라이드 0.1∼15중량%, 멜라민 0.01~10중량%, 지르코알루미네이트 0.01~10중량%, 에틸셀롤로오스 0.01∼10중량% 및 폴리아크릴아미드 0.01~10중량%를 포함할 수 있다.Wherein the performance improving admixture comprises 50 to 99% by weight of water-soluble epoxy, 0.1 to 25% by weight of methyl acrylate-styrene copolymer, 0.1 to 15% by weight of polyvinyl chloride, 0.01 to 10% by weight of melamine, 0.01 to 10% by weight of aluminate, 0.01 to 10% by weight of ethylcellulose, and 0.01 to 10% by weight of polyacrylamide.

상기 수용성 에폭시는 강도 및 부착력을 개선하기 위하여 사용한다. 상기 수용성 에폭시는 상기 성능개선 혼화제에 대하여 50∼99중량% 함유되는 것이 바람직한데, 상기 수용성 에폭시의 함량이 50중량% 미만일 경우에는 무기물 간의 결합력, 부착력 및 내구성 개선의 효과가 미약하고, 상기 수용성 에폭시의 함량이 99중량%를 초과하는 경우에는 더 이상의 부착력 및 내구성 개선 효과를 기대하기 어렵다. The water-soluble epoxy is used to improve strength and adhesion. The water-soluble epoxy is preferably contained in an amount of 50 to 99 wt% based on the performance improving admixture. When the content of the water-soluble epoxy is less than 50 wt%, the effect of improving the bonding strength, adhesion and durability of the inorganic materials is insufficient. Is more than 99% by weight, it is difficult to expect further improvement in adhesion and durability.

상기 메틸아크릴레이트-스티렌 공중합체는 작업성, 강도, 내마모성, 내약품성 등의 내구성을 증진시키기 위해 사용된다. 상기 메틸아크릴레이트-스티렌 공중합체는 상기 성능개선 혼화제에 대하여 0.1∼25중량% 함유되는 것이 바람직한데, 상기 메틸아크릴레이트-스티렌 공중합체의 함량이 25중량%를 초과하면 성능은 개선되나 재료분리가 발생하기 쉽고, 가격경쟁력이 떨어질 수 있으며, 상기 메틸아크릴레이트-스티렌 공중합체의 함량이 0.1중량% 미만이면 내구성 및 강도 개선효과가 미약할 수 있다. The methyl acrylate-styrene copolymer is used to improve durability such as workability, strength, abrasion resistance, chemical resistance and the like. It is preferable that the methyl acrylate-styrene copolymer is contained in an amount of 0.1 to 25% by weight based on the performance improving admixture. If the content of the methyl acrylate-styrene copolymer exceeds 25% by weight, And the price competitiveness may be deteriorated. If the content of the methyl acrylate-styrene copolymer is less than 0.1% by weight, durability and strength improvement effect may be weak.

상기 폴리비닐클로라이드는 연성, 내약품성, 내유성을 개선하기 위하여 사용된다. 상기 폴리비닐클로라이드는 상기 성능개선 혼화제에 대하여 0.1∼15중량%가 혼입되는 것이 바람직한데, 상기 폴리비닐클로라이드의 함량이 15중량%를 초과하면 성능은 개선되나 작업성이 저하되고, 상기 폴리비닐클로라이드의 함량이 0.1중량% 미만이면 강도 및 내구성 개선 효과가 미약할 수 있다. The polyvinyl chloride is used for improving ductility, chemical resistance and oil resistance. It is preferable that the polyvinyl chloride is mixed with the performance improving admixture in an amount of 0.1 to 15% by weight. When the content of the polyvinyl chloride exceeds 15% by weight, the performance is improved but the workability is lowered. If the content is less than 0.1% by weight, the effect of improving the strength and durability may be weak.

상기 멜라민은 조성물의 내식성, 내용제성, 내열성 및 전기적 성질을 개선하기 위하여 사용된다. 상기 멜라민은 상기 성능개선 혼화제에 대하여 0.01∼10중량% 혼입되는 것이 바람직한데, 상기 멜라민의 함량이 10중량%를 초과하면 성능은 개선되나 가격경쟁력이 떨어지고, 상기 멜라민의 함량이 0.01중량% 미만이면 성능 개선 효과가 미약할 수 있다. The melamine is used to improve the corrosion resistance, solvent resistance, heat resistance and electrical properties of the composition. When the content of the melamine is more than 10% by weight, the performance is improved but the price competitiveness is poor. When the content of the melamine is less than 0.01% by weight The performance improvement effect may be weak.

상기 지르코알루미네이트는 조성물의 접착력, 내습성, 재료분리저항성을 개선하기 위하여 사용된다. 상기 지르코알루미네이트는 상기 성능개선 혼화제에 대하여 0.01∼10중량% 혼입되는 것이 바람직한데, 상기 지르코알루미네이트의 함량이 10중량%를 초과하면 성능은 개선되나 작업성이 저하되고, 상기 지르코알루미네이트의 함량이 0.01중량% 미만이면 성능 개선 효과가 미약할 수 있다. The zircaluminate is used to improve the adhesive strength, moisture resistance and material separation resistance of the composition. It is preferable that the zirconia aluminate is incorporated at 0.01-10 wt% with respect to the performance improving admixture. If the zirconia aluminate content exceeds 10 wt%, the performance is improved but the workability is lowered, If the content of aluminate is less than 0.01% by weight, the effect of improving the performance may be weak.

상기 에틸셀롤로오스는 점성 조절, 강도 및 내화성을 개선하기 위하여 사용된다. 상기 에틸셀롤로오스는 상기 성능개선 혼화제에 대하여 0.01∼10중량% 함유되는 것이 바람직한데, 상기 에틸셀롤로오스의 함량이 10중량%를 초과하면 성능은 개선되나 점성이 높아져 작업성이 저하될 수 있으며, 상기 에틸셀롤로오스의 함량이 0.01중량% 미만이면 작업성은 개선되나 성능 개선 효과가 미약할 수 있다. The ethylcellulose is used to improve viscosity control, strength and fire resistance. The ethylcellulose is preferably contained in an amount of 0.01 to 10% by weight based on the performance improving admixture. If the content of the ethylcellulose exceeds 10% by weight, the performance is improved but the viscosity is increased, If the content of ethylcellulose is less than 0.01% by weight, the workability is improved but the effect of improving the performance may be weak.

상기 폴리아크릴아미드는 접착력을 증가하고 응집성, 증조성, 전단성, 분산성 등을 개선하기 위하여 사용된다. 상기 폴리아크릴아미드는 상기 성능개선 혼화제에 대하여 0.01∼10중량% 함유되는 것이 바람직한데, 상기 폴리아크릴아미드의 함량이 10중량%를 초과하면 성능은 개선되나 작업성이 저하되고 가격경쟁력이 떨어질 수 있으며, 상기 폴리아크릴아미드의 함량이 0.01중량% 미만이면 성능 개선 효과가 미약할 수 있다. The polyacrylamide is used to increase the adhesive strength and improve the cohesion, expansion, shear, dispersibility and the like. The polyacrylamide is preferably contained in an amount of 0.01 to 10% by weight based on the performance improving admixture. If the content of the polyacrylamide exceeds 10% by weight, the performance is improved but the workability is deteriorated and the price competitiveness may deteriorate. If the content of the polyacrylamide is less than 0.01% by weight, the effect of improving the performance may be insignificant.

상기 성능개선 혼화제는 경화 촉진제를 더 포함할 수 있다. 상기 경화 촉진제로는 폴리에틸렌폴리아민, 테트라에틸렌펜타민, 폴리아미도아민 중 어느 하나를 선택하여 사용할 수 있다. 상기 경화 촉진제는 상기 성능개선 혼화제에 대하여 0.01∼30중량% 함유되는 것이 바람직하다. 상기 경화촉진제의 함량이 0.01중량% 미만이면 반응속도가 저하되어 경화시간이 늦어지며, 상기 경화촉진제의 함량이 30중량%를 초과하면 경화시간이 빨라져 작업성이 저하될 수 있다.The performance improving admixture may further comprise a curing accelerator. As the curing accelerator, any one selected from polyethylene polyamine, tetraethylenepentamine, and polyamidoamine may be used. The curing accelerator is preferably contained in an amount of 0.01 to 30% by weight based on the performance improving admixture. If the content of the curing accelerator is less than 0.01% by weight, the reaction rate is lowered and the curing time is delayed. If the content of the curing accelerator is more than 30% by weight, the curing time is increased and the workability may be lowered.

상기 성능개선 혼화제는 실시예로서 반응개시제를 더 포함할 수 있다. 상기 반응개시제로는 벤조일 퍼옥사이드, 아세틸 퍼옥사이드, 디라우릴 퍼옥사이드, 디-터트-부틸 퍼옥사이드, 쿠밀 히드로퍼옥사이드, 아조비스이소부티로니트릴, 과산화수소 및 과황산칼륨 중에서 선택된 1종 이상의 물질을 상기 성능개선 혼화제에 대하여 0.01∼20중량%를 더 포함할 수 있다. 상기 반응개시제 함량이 20중량%를 초과하면 반응속도가 빨라져 작업성이 저하되고, 상기 반응개시제 함량이 0.01중량%미만이면 반응속도가 늦어져 성능발현 효과가 저하된다.The performance improving admixture may further include a reaction initiator as an example. The reaction initiator may be at least one selected from the group consisting of benzoyl peroxide, acetyl peroxide, dilauryl peroxide, di-tert-butyl peroxide, cumyl hydroperoxide, azobisisobutyronitrile, hydrogen peroxide and potassium persulfate Based on the performance improving admixture, 0.01 to 20% by weight. If the content of the reaction initiator is more than 20% by weight, the reaction rate is increased and the workability is lowered. If the content of the reaction initiator is less than 0.01% by weight, the reaction rate is lowered and the performance development effect is lowered.

상기 성능개선 혼화제는 폴리카보네이트를 더 포함할 수 있다. 상기 폴리카보네이트는 내충격성, 단열, 자외선 차단, 내구성을 개선하기 위해 사용된다. 상기 폴리카보네이트는 상기 성능개선 혼화제에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 폴리카보네이트의 함량이 10중량%를 초과하면 성능은 개선되나 가격경쟁력이 떨어질 수 있고, 상기 폴리카보네이트의 함량이 0.01중량% 미만이면 성능 개선 효과가 미약할 수 있다. The performance improving admixture may further comprise a polycarbonate. The polycarbonate is used to improve impact resistance, thermal insulation, ultraviolet shielding, and durability. The polycarbonate is preferably contained in an amount of 0.01 to 10% by weight based on the performance improving admixture. If the content of the polycarbonate exceeds 10% by weight, the performance may be improved but the price competitiveness may be deteriorated. If the content of the polycarbonate is less than 0.01% by weight, the performance improvement effect may be weak.

상기 성능개선 혼화제는 안료를 더 포함할 수 있다. 상기 안료는 이산화티탄, 적색 산화철, 황색 산화철, 산화크롬(Cr2O3), 자색 산화철, 흑색 산화철, 카본블랙, 황산바륨 중에서 선택된 1종 이상의 물질로 이루어질 수 있다. 상기 안료는 상기 성능개선 혼화제에 대하여 0.01~15중량% 함유되는 것이 바람직하다.The performance improving admixture may further comprise a pigment. The pigment may be made of at least one material selected from titanium dioxide, red iron oxide, yellow iron oxide, chromium oxide (Cr 2 O 3 ), purple iron oxide, black iron oxide, carbon black and barium sulfate. The pigment is preferably contained in an amount of 0.01 to 15% by weight based on the performance improving admixture.

상기 성능개선 혼화제는 기포를 제거하여 강도 및 내구성을 높이기 위한 소포제를 더 포함할 수 있다. 상기 소포제는 상기 성능개선 혼화제 내의 기포를 제거하여 강도 및 내구성을 높이기 위하여 사용한다. 또한, 상기 소포제가 성능개선 혼화제에 첨가되면 공기연행 효과를 부여하여 작업성 및 가사시간을 향상시킬 수 있다. 상기 소포제는 상기 성능개선 혼화제에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 소포제로는 알콜계 소포제, 실리콘계 소포제, 지방산계 소포제, 오일계 소포제, 에스테르계 소포제, 옥시알킬렌계 소포제 등을 사용할 수 있다. 상기 실리콘계 소포제로는 디메틸실리콘유, 폴리오가노실록산, 플루오로실리콘유 등이 있다. 상기 지방산계 소포제로는 스테아린산, 올레인산 등이 있다. 상기 오일계 소포제로는 등유, 동식물유, 피마자유 등이 있다. 상기 에스테르계 소포제로는 솔리톨트리올레이트, 글리세롤모노리시놀레이트 등이 있다. 상기 옥시알킬렌계 소포제로는 폴리옥시알킬렌, 아세틸렌에테르류, 폴리옥시알킬렌지방산에스테르, 폴리옥시알킬렌알킬아민 등이 있다. 상기 알콜계 소포제로는 글리콜(glycol) 등이 있다.The performance improving admixture may further include a defoaming agent for removing bubbles to increase strength and durability. The defoaming agent is used to remove bubbles in the performance improving admixture to increase strength and durability. In addition, when the defoaming agent is added to the performance improving admixture, the air entraining effect is imparted to improve the workability and the pot life. The antifoaming agent is preferably contained in an amount of 0.01 to 10% by weight based on the performance improving admixture. Examples of the defoaming agent include alcohol defoaming agents, silicone defoaming agents, fatty acid defoaming agents, oil defoaming agents, ester defoaming agents and oxyalkylene defoaming agents. Examples of the silicone defoaming agent include dimethyl silicone oil, polyorganosiloxane, and fluorosilicone oil. Examples of the fatty acid defoaming agent include stearic acid and oleic acid. Examples of the oil-based antifoaming agents include kerosene, animal and plant oil, and castor oil. Examples of the ester type antifoaming agents include solitol trioleate, glycerol monoricinolate, and the like. Examples of the oxyalkylene antifoaming agents include polyoxyalkylene, acetylene ethers, polyoxyalkylene diisocyanate esters, and polyoxyalkylene alkylamines. Examples of the alcohol-based defoaming agent include glycol.

한편, 본 발명은 내후성, 내오존성, 내오염성, 자외선 저항성 등을 개선하기 위하여 표면 마감 코팅제 조성물을 제안한다. On the other hand, the present invention proposes a surface finish coating composition for improving weatherability, ozone resistance, stain resistance, ultraviolet resistance and the like.

상기 표면 마감 코팅제 조성물은 표면 마감 코팅제 조성물 중량 대비 수용성 불소 수지 10~70중량%, 폴리부틸렌테레프탈레이트 (poly butylene terephthalate) 0.1~30중량%, 폴리에틸렌옥사이드 0.1~25중량%, 메틸아크릴레이트-비닐아세테이트 공중합체 0.1~25중량%, 트리페닐메톡시실란 0.01~10중량%, 황산바륨 0.01~10중량%, 지르코알루미네이트 0.01~10중량%, 실리콘 0.01~10중량%, 안료 0.01~10중량% 및 소 포제 0.01~10중량% 함유되는 것이 바람직하다. Wherein the surface finish coating composition comprises 10 to 70% by weight of water-soluble fluororesin, 0.1 to 30% by weight of polybutylene terephthalate, 0.1 to 25% by weight of polyethylene oxide, 0.1 to 25% by weight of triphenylmethoxysilane, 0.01 to 10% by weight of triphenylmethoxysilane, 0.01 to 10% by weight of barium sulfate, 0.01 to 10% by weight of zirconylate, 0.01 to 10% By weight and the defoamer 0.01 to 10% by weight.

상기 수용성 불소 수지는 구조내에 존재하는 탄소와 불소간의 강한 결합력과 불소의 낮은 표면 장력으로 자외선에 우수한 내후성과 내오염성을 가진다. 상기 수용성 불소 수지는 내수성, 내약품성, 내후성, 내오염성 등을 개선하기 위하여 사용한다. 상기 수용성 불소수지는 상기 표면 마감 코팅제 조성물에 대하여 10~70중량%를 포함한다. 상기 수용성 불소수지의 함량이 70중량%를 초과하면 성능개선 효과는 뚜렷하나 경제성이 저하되고, 그 함량이 10중량%미만이면 성능 개선효과가 저하된 다. The water-soluble fluororesin has excellent weatherability and stain resistance to ultraviolet rays due to strong bonding force between carbon and fluorine existing in the structure and low surface tension of fluorine. The water-soluble fluororesin is used for improving water resistance, chemical resistance, weather resistance, stain resistance and the like. The water-soluble fluororesin includes 10 to 70% by weight based on the surface finish coating composition. If the content of the water-soluble fluororesin exceeds 70% by weight, the performance improvement effect is obvious but the economical efficiency is deteriorated. If the content is less than 10% by weight, the performance improvement effect is deteriorated.

상기 폴리부틸렌테레프탈레이트는 강도, 난연성 등을 개선하기 위하여 사용한다. 상기 폴리부틸렌테레프탈레이트는 상기 표면 마감 코팅제 조성물에 대하여 0.1~30중량%를 포함한다. 상기 폴리부틸렌테레프탈레이트의 함량이 30중량%를 초과하면 성능개선 효과는 뚜렷하나 경제성이 저하되고, 그 함량이 0.1중량% 미만이면 성능 개선효과가 저하된다.The polybutylene terephthalate is used for improving strength and flame retardancy. The polybutylene terephthalate comprises 0.1 to 30% by weight based on the surface finish coating composition. If the content of the polybutylene terephthalate exceeds 30% by weight, the performance improving effect is obvious but the economical efficiency is lowered. If the content is less than 0.1% by weight, the performance improving effect is deteriorated.

상기 폴리에틸렌옥사이드는 인장강도, 흡습성, 재료분리저항성, 내약품성 등을 개선하기 위하여 사용한다. 상기 폴리에틸렌 옥사이드는 상기 표면 마감 코팅제 조성물에 대하여 0.1~25중량%를 포함한다. 상기 폴리에틸렌 옥사이드의 함량이 25중량%를 초과하면 성능개선 효과는 뚜렷하나 작업성이 저하되고, 그 함량이 0.1 중량%미만이면 성능 개선효과가 저하된다.The polyethylene oxide is used for improving tensile strength, hygroscopicity, material separation resistance, chemical resistance, and the like. The polyethylene oxide comprises 0.1 to 25% by weight based on the surface finish coating composition. If the content of the polyethylene oxide is more than 25% by weight, the performance improving effect is obvious but the workability is decreased. If the content is less than 0.1% by weight, the performance improving effect is deteriorated.

상기 메틸아크릴레이트-비닐아세테이트 공중합체는 점도조절, 강도, 내구성 등을 개선하기 위하여 사용된다. 상기 메틸아크릴레이트-비닐아세테이트 공중합체는 상기 표면 마감 코팅제 조성물에 대하여 0.1~25중량%를 포함한다. 상기 메틸아크릴레이트-비닐아세테이트 공중합체의 함량이 25중량%를 초과하면 성능개선 효과는 뚜렷하나 재료분리가 발생하기 쉽고, 그 함량이 0.1중량%미만이면 성능 개선효과가 저하된다. The methyl acrylate-vinyl acetate copolymer is used to improve viscosity control, strength, durability, and the like. The methyl acrylate-vinyl acetate copolymer comprises 0.1 to 25% by weight based on the surface finish coating composition. If the content of the methyl acrylate-vinyl acetate copolymer exceeds 25% by weight, the performance improvement effect is obvious but the material separation is likely to occur. If the content of the methyl acrylate-vinyl acetate copolymer is less than 0.1% by weight, the performance improvement effect is lowered.

상기 트리페닐메톡시실란은 접착력, 반응성, 내구성 등을 개선하기 위하여 사용된다. 상기 트리페닐메톡시실란은 상기 표면 마감 코팅제 조성물에 대하여 0.01～10중량% 함유되는 것이 바람직한데, 상기 트리페닐메톡시실란의 함량이 10중량%를 초과하면 성능은 개선되나 가격경쟁력이 떨어질 수 있으며, 상기 트리페닐메톡시실란의 함량이 0.01중량% 미만이면 성능 개선 효과가 미약할 수 있다.The triphenylmethoxysilane is used to improve adhesion, reactivity, durability, and the like. The triphenylmethoxysilane is preferably contained in an amount of 0.01 to 10% by weight based on the surface finish coating composition. If the content of the triphenylmethoxysilane exceeds 10% by weight, the performance may be improved but the price competitiveness may be deteriorated. If the content of the triphenylmethoxysilane is less than 0.01% by weight, the effect of improving the performance may be weak.

상기 황산바륨은 충전성, 내충격성, 보온성 및 내화성을 개선하기 위하여 사용된다. 상기 황산바륨은 상기 표면 마감 코팅제 조성물에 대하여 0.01~10 중량% 함유되는 것이 바람직하며, 상기 황산바륨의 함량이 10중량%를 초과하면 성능은 개선되나 작업성이 저하되고, 상기 황산바륨의 함량이 0.01중량%미만이면 작업성은 개선되나 내충격성, 보온성 및 내화성 개선효과가 미약할 수 있다.The barium sulfate is used for improving the filling property, the impact resistance, the warming property and the fire resistance. The barium sulfate is preferably contained in an amount of 0.01 to 10 wt% with respect to the surface finish coating composition, and when the barium sulfate content is more than 10 wt%, the performance is improved but the workability is deteriorated and the content of barium sulfate When the amount is less than 0.01% by weight, the workability is improved but the effect of improving impact resistance, warmth and fire resistance may be weak.

상기 지르코알루미네이트는 내식성, 밀착성, 내열성 등을 개선하기 위하여 사용된다. 상기 지르코알루미네이트는 상기 표면 마감 코팅제 조성물에 대하여 0.01~10 중량%함유되는 것이 바람직하며, 상기 지르코알루미네이트의 함량이 10중량%를 초과하면 성능은 개선되나 경제성이 저하되고, 상기 지르코알루미네이트의 함량이 0.01중량%미만이면 내식성, 밀착성 및 내열성 개선효과가 미약할 수 있다.The zirconylate is used for improving corrosion resistance, adhesion, heat resistance, and the like. The content of the zirconia aluminate is preferably 0.01 to 10% by weight based on the surface finish coating composition. If the content of the zirconia aluminate exceeds 10% by weight, the performance is improved but the economical efficiency is lowered. If the content of aluminate is less than 0.01% by weight, the effect of improving the corrosion resistance, adhesion and heat resistance may be weak.

상기 실리콘은 내식성, 발수성, 내고온성 등을 개선하기 위하여 사용된다. 상기 실리콘은 상기 표면 마감 코팅제 조성물에 대하여 0.01~10 중량%함유되는 것이 바람직하며, 상기 실리콘의 함량이 10중량%를 초과하면 성능은 개선되나 작업성이 저하되고, 상기 실리콘의 함량이 0.01중량%미만이면 내식성, 발수성 및 내고온성 개선효과가 미약할 수 있다.The silicon is used for improving corrosion resistance, water repellency, heat resistance and the like. The silicon content is preferably 0.01 to 10% by weight based on the surface finish coating composition. If the content of silicon exceeds 10% by weight, the performance is improved but the workability is decreased. If the content of silicon is less than 0.01% , The effect of improving the corrosion resistance, water repellency and high temperature resistance may be weak.

상기 안료는 색상을 부여하여 미관을 개선하기 위하여 사용된다. 상기 안료는 이산화티탄, 적색 산화철, 황색 산화철, 산화크롬(Cr₂O₃), 자색 산화철, 흑색 산화철, 카본블랙, 황산바륨 중에서 선택된 1종 이상의 물질로 이루어질 수 있다. 상기 안료는 상기 표면 마감 코팅제 조성물에 대하여 0.01~10중량% 함유되는 것이 바람직하다.The pigment is used to improve the appearance by imparting hue. The pigment may be composed of at least one material selected from titanium dioxide, red iron oxide, yellow iron oxide, chromium oxide (Cr 2 O 3), purple iron oxide, black iron oxide, carbon black and barium sulfate. The pigment is preferably contained in an amount of 0.01 to 10% by weight based on the surface finish coating composition.

상기 소포제는 기포를 제거하여 강도 및 내구성을 개선하기 위하여 사용된다. 상기 소포제를 첨가하면 공기연행 효과를 부여하여 작업성 및 가사시간을 향상시킬 수 있다. 상기 소포제는 상기 표면 마감 코팅제 조성물에 대하여 0.01～10중량% 함유되는 것이 바람직하다.The antifoaming agent is used to remove bubbles to improve strength and durability. When the defoaming agent is added, the air entraining effect is imparted to improve workability and pot life. The antifoaming agent is preferably contained in an amount of 0.01 to 10% by weight based on the surface finish coating composition.

이하, 본 발명의 바람직한 실시예에 따른 상기 친환경 강재 코팅제 조성물 및 상기 표면 마감 코팅제 조성물의 제조방법을 설명하기로 한다.Hereinafter, the environmentally friendly steel coating composition according to a preferred embodiment of the present invention and the method for preparing the surface finish coating composition will be described.

본 발명의 바람직한 실시예에 따른 친환경 강재 코팅제 조성물은 성능개선 충전재 1∼60중량% 및 성능개선 혼화제 40∼99중량%를 강제식 믹서나 연속식 믹서로 소정시간(예컨대, 1∼10분) 동안 믹싱하여 제조할 수 있다.The environmentally friendly steel coating composition according to a preferred embodiment of the present invention may contain 1 to 60% by weight of the performance improving filler and 40 to 99% by weight of the performance improving admixture in a forced mixer or continuous mixer for a predetermined time (for example, 1 to 10 minutes) And mixing them.

본 발명의 바람직한 실시예에 따른 표면 마감 코팅제 조성물은 수용성 불소 수지 10~70중량%, 폴리부틸렌테레프탈레이트 (poly butylene terephthalate) 0.1~30중량%, 폴리에틸렌옥사이드 0.1~25중량%, 메틸아크릴레이트-비닐아세테이트 공중합체 0.1~25중량%, 트리페닐메톡시실란 0.01~10중량%, 황산바륨 0.01~10중량%, 지르코알루미네이트 0.01~10중량%, 실리콘 0.01~10중량%, 안료 0.01~10중량% 및 소포제 0.01~10중량% 를 강제식 믹서나 연속식 믹서로 소정시간(예컨대, 2 ~ 30분) 동안 교반 하여 제조할 수 있다.A surface finish coating composition according to a preferred embodiment of the present invention comprises 10 to 70% by weight of a water-soluble fluororesin, 0.1 to 30% by weight of polybutylene terephthalate, 0.1 to 25% by weight of polyethylene oxide, 0.1 to 25% by weight of vinyl acetate copolymer, 0.01 to 10% by weight of triphenylmethoxysilane, 0.01 to 10% by weight of barium sulfate, 0.01 to 10% by weight of zirconium aluminate, 0.01 to 10% And 0.01 to 10% by weight of an antifoaming agent in a forced mixer or a continuous mixer for a predetermined time (for example, 2 to 30 minutes).

이하, 상술한 친환경 강재 코팅제 조성물을 이용한 강구조물의 표면 보호·강화 방법을 제시한다. Hereinafter, a method of protecting and strengthening steel structures using the environmentally friendly steel coating composition is presented.

여기서 강 구조물(steel structures)이라 함은 도로시설물, 가교, 강교, 복공판 등의 강재(steel)로 이루어진 모든 구조물을 포함하는 의미로 사용한다.Here, steel structures are used to mean all structures made of steel such as road facilities, bridges, steel bridges, and flat boards.

본 발명의 바람직한 실시예에 따른 강 구조물의 표면 보호·강화 방법은 샌드블라스터, 워터블라스터, 고압수 세척기 등으로 강 구조물 표면의 녹, 이물질 등을 제거하는 단계; 상기 제거된 부위의 홈, 스크레치 등을 퍼티재로 도포하여 평탄하도록 바탕면을 처리단계; 상기 처리된 바탕면에 프라이머층을 형성하는 단계; 상기 프라이머층 상부에 상기 친환경 강재 코팅제 조성물을 도포하는 단계; 및 양생된 후 UV저항성, 내오염성, 내후성, 내약품성, 난연성 등을 개선하기 위하여 상기 표면 마감 코팅제 조성물을 도포하여 양생하는 단계를 포함한다.According to a preferred embodiment of the present invention, there is provided a method for protecting and strengthening a surface of a steel structure, comprising: removing rust, foreign matter, and the like from the surface of a steel structure by a sandblaster, a water blaster, A step of treating the ground surface so as to flatten the grooves, the scratches and the like of the removed portion with a putty material; Forming a primer layer on the treated substrate; Coating the environmentally friendly steel coating composition on the primer layer; And applying and curing the surface finish coating composition to improve UV resistance, stain resistance, weather resistance, chemical resistance, flame retardancy and the like after being cured.

이때, 상기 퍼티재는 폴리메틸아크릴레이트-스티렌 공중합체, 에폭시수지 등으로 탄성을 가지는 재료를 사용하여 강 구조물의 수축 팽창에 따른 미세 균열이 발생 시 이러한 망상균열 혹은 미세 균열을 보수함과 동시에 초기 소성 균열 발생을 방지할 수 있다. At this time, the putty material is made of a material having elasticity such as polymethyl acrylate-styrene copolymer, epoxy resin, etc. to repair such a delamination crack or micro crack when a microcrack due to contraction and expansion of a steel structure is generated, Cracks can be prevented from occurring.

상기 표면 마감 코팅제 조성물은 수성실리카졸 무기계 표면 마감 코팅제와 병용하여 사용할 수 있다.The surface finish coating composition may be used in combination with an aqueous silica sol inorganic surface finish coating agent.

이하에서, 본 발명에 따른 친환경 강재 코팅제 조성물의 실시예들을 더욱 구체적으로 제시한다.Hereinafter, embodiments of the environmentally friendly steel coating composition according to the present invention will be more specifically described.

<친환경 강재 코팅제 조성물>&Lt; Environmentally friendly steel coating composition >

<실시예 1>&Lt; Example 1 >

성능개선 충전재 20중량% 및 성능개선 혼화제 80중량%를 첨가하여 2분간 강제식 믹서로 교반하여 친환경 강재 코팅제 조성물을 제조하였다. 20% by weight of a filler for performance improvement and 80% by weight of a performance improving admixture were added and stirred for 2 minutes with a forced mixer to prepare an environmentally friendly steel coating composition.

이때, 상기 성능개선 충전재는 중질탄산칼슘 50중량%, 깁사이트 15중량%, 탄산마그네슘 10중량%, 플루오린화나트륨 10중량%, 규산염 5중량%, 실리카겔 5중량% 및 카올린 5중량%를 혼합하여 사용하고, 상기 성능개선 혼화제는 수용성 에폭시 82중량%, 메틸아크릴레이트-스티렌 공중합체 3중량%, 폴리비닐클로라이드 2중량%, 멜라민 2중량%, 지르코알루미네이트 2중량%, 에틸셀롤로오스 2중량%, 폴리아크릴아미드 2중량%, 경화 촉진제 1중량%, 반응개시제 1중량%, 폴리카보네이트 1중량%, 안료 1중량% 및 소포제 1중량%를 사용하였다. 상기 경화 촉진제는 폴리아미도아민을 사용하였다. 상기 반응개시제는 벤조일 퍼옥사이드를 사용하였다. 상기 안료는 산화티탄을 사용하였다. 상기 소포제는 실리콘 오일계 소포제를 사용하였다. The performance improving filler was prepared by mixing 50 wt% of heavy calcium carbonate, 15 wt% of gibbsite, 10 wt% of magnesium carbonate, 10 wt% of fluorinated sodium, 5 wt% of silicate, 5 wt% of silica gel and 5 wt% of kaolin The performance improving admixture was composed of 82 wt% of water-soluble epoxy, 3 wt% of methyl acrylate-styrene copolymer, 2 wt% of polyvinyl chloride, 2 wt% of melamine, 2 wt% of zirconia aluminate, 2% by weight of polyacrylamide, 1% by weight of a curing accelerator, 1% by weight of a reaction initiator, 1% by weight of a polycarbonate, 1% by weight of a pigment and 1% by weight of an antifoaming agent were used. The curing accelerator used was polyamidoamine. The reaction initiator used was benzoyl peroxide. Titanium oxide was used as the pigment. The defoaming agent used was a silicone oil defoaming agent.

<실시예 2>&Lt; Example 2 >

성능개선 충전재 20중량% 및 성능개선 혼화제 80중량%를 첨가하여 2분간 강제식 믹서로 교반하여 친환경 강재 코팅제 조성물을 제조하였다. 20% by weight of a filler for performance improvement and 80% by weight of a performance improving admixture were added and stirred for 2 minutes with a forced mixer to prepare an environmentally friendly steel coating composition.

이때, 상기 성능개선 충전재는 중질탄산칼슘 50중량%, 깁사이트 15중량%, 탄산마그네슘 10중량%, 플루오린화나트륨 10중량%, 규산염 5중량%, 실리카겔 5중량% 및 카올린 5중량%를 혼합하여 사용하고, 상기 성능개선 혼화제는 수용성 에폭시 75중량%, 메틸아크릴레이트-스티렌 공중합체 5중량%, 폴리비닐클로라이드 3중량%, 멜라민 3중량%, 지르코알루미네이트 3중량%, 에틸셀롤로오스 3중량%, 폴리아크릴아미드 3중량%, 경화 촉진제 1중량%, 반응개시제 1중량%, 폴리카보네이트 1중량%, 안료 1중량% 및 소포제 1중량%를 사용하였다. 상기 경화 촉진제는 폴리아미도아민을 사용하였다. 상기 반응개시제는 벤조일 퍼옥사이드를 사용하였다. 상기 안료는 산화티탄을 사용하였다. 상기 소포제는 실리콘 오일계 소포제를 사용하였다. The performance improving filler was prepared by mixing 50 wt% of heavy calcium carbonate, 15 wt% of gibbsite, 10 wt% of magnesium carbonate, 10 wt% of fluorinated sodium, 5 wt% of silicate, 5 wt% of silica gel and 5 wt% of kaolin The performance improving admixture is composed of 75 wt% of water-soluble epoxy, 5 wt% of methyl acrylate-styrene copolymer, 3 wt% of polyvinyl chloride, 3 wt% of melamine, 3 wt% of zirconia aluminate, 3% by weight of polyacrylamide, 1% by weight of a curing accelerator, 1% by weight of a reaction initiator, 1% by weight of a polycarbonate, 1% by weight of a pigment and 1% by weight of an antifoaming agent were used. The curing accelerator used was polyamidoamine. The reaction initiator used was benzoyl peroxide. Titanium oxide was used as the pigment. The defoaming agent used was a silicone oil defoaming agent.

<실시예 3>&Lt; Example 3 >

성능개선 충전재 20중량% 및 성능개선 혼화제 80중량%를 첨가하여 2분간 강제식 믹서로 교반하여 친환경 강재 코팅제 조성물을 제조하였다. 20% by weight of a filler for performance improvement and 80% by weight of a performance improving admixture were added and stirred for 2 minutes with a forced mixer to prepare an environmentally friendly steel coating composition.

이때, 상기 성능개선 충전재는 중질탄산칼슘 50중량%, 깁사이트 15중량%, 탄산마그네슘 10중량%, 플루오린화나트륨 10중량%, 규산염 5중량%, 실리카겔 5중량% 및 카올린 5중량%를 혼합하여 사용하고, 상기 성능개선 혼화제는 수용성 에폭시 67중량%, 메틸아크릴레이트-스티렌 공중합체 8중량%, 폴리비닐클로라이드 4중량%, 멜라민 4중량%, 지르코알루미네이트 4중량%, 에틸셀롤로오스 4중량%, 폴리아크릴아미드 4중량%, 경화 촉진제 1중량%, 반응개시제 1중량%, 폴리카보네이트 1중량%, 안료 1중량% 및 소포제 1중량%를 사용하였다. 상기 경화 촉진제는 폴리아미도아민을 사용하였다. 상기 반응개시제는 벤조일 퍼옥사이드를 사용하였다. 상기 안료는 산화티탄을 사용하였다. 상기 소포제는 실리콘 오일계 소포제를 사용하였다. The performance improving filler was prepared by mixing 50 wt% of heavy calcium carbonate, 15 wt% of gibbsite, 10 wt% of magnesium carbonate, 10 wt% of fluorinated sodium, 5 wt% of silicate, 5 wt% of silica gel and 5 wt% of kaolin The performance improving admixture was composed of 67 wt% of water-soluble epoxy, 8 wt% of methyl acrylate-styrene copolymer, 4 wt% of polyvinyl chloride, 4 wt% of melamine, 4 wt% of zirconia aluminate, 4% by weight of polyacrylamide, 1% by weight of a curing accelerator, 1% by weight of a reaction initiator, 1% by weight of a polycarbonate, 1% by weight of a pigment and 1% by weight of an antifoaming agent were used. The curing accelerator used was polyamidoamine. The reaction initiator used was benzoyl peroxide. Titanium oxide was used as the pigment. The defoaming agent used was a silicone oil defoaming agent.

상기의 실시예 1 내지 실시예 3의 특성을 보다 용이하게 파악할 수 있도록 본 발명의 실시예들과 비교할 수 있는 비교예 1을 제시한 것이다.In order to more easily grasp the characteristics of the first to third embodiments, Comparative Example 1 which can be compared with the embodiments of the present invention is shown.

<비교예 1>&Lt; Comparative Example 1 &

중질탄산칼슘 20중량% 및 수용성 에폭시 80중량%를 첨가하여 2분간 강제식 믹서로 교반하여 코팅제 조성물을 제조하였다. 20 wt% of heavy calcium carbonate and 80 wt% of water-soluble epoxy were added and stirred for 2 minutes with a forced mixer to prepare a coating composition.

아래의 시험예들은 본 발명에 따른 실시예 1 내지 실시예 3의 특성을 보다 용이하게 파악할 수 있도록 본 발명에 따른 실시예들과 비교예 1의 특성을 비교한 실험결과들을 나타낸 것이다.The following test examples show experimental results comparing characteristics of the embodiment of the present invention and the characteristics of the first comparative example so that the characteristics of the first to third embodiments of the present invention can be grasped more easily.

<시험예 1>&Lt; Test Example 1 >

실시예 1 내지 실시예 3에 따라 제조된 친환경 강재 코팅제 조성물과 비교예에서 제조한 코팅제 조성물의 물리적 특성을 비교하기 위하여 위에서 설명한 실시예 1 내지 실시예 3에 따라 제조된 친환경 강재 코팅제 조성물과 비교예 1에 의하여 제조된 코팅제 조성물을 에폭시계 도료 (SPS-KIPC 5002-1755)에 의하여 건조도막 상태, 용기내에서의 상태, 혼합성, 비중(주제), 비휘발분, 건조시간, 가사시간, 흐름성 시험을 수행하였고, 우레탄 도료 (SPS-KIPC 5003-1756)에 의해 촉진내후성 시험을 수행하여 각각의 결과를 하기 표 1에 나타내었다.In order to compare the physical properties of the environmentally friendly steel coating composition prepared according to Examples 1 to 3 and the coating composition prepared according to Comparative Examples, the environmentally friendly steel coating composition prepared according to the above Examples 1 to 3 and Comparative Example 1, the coating composition prepared by using the epoxy-based coating material (SPS-KIPC 5002-1755) was evaluated for the dry film state, the state in the container, the mixing property, the specific gravity (subject), the nonvolatile matter, the drying time, (SPS-KIPC 5003-1756), and the results are shown in Table 1 below.

구분division 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 비교예 1Comparative Example 1 건조 도막의 상태The state of the dry film 이상없음clear 이상없음clear 이상없음clear 이상없음clear 용기내에서의 상태Condition in container 이상없음clear 이상없음clear 이상없음clear 이상없음clear 색상color 이상없음clear 이상없음clear 이상없음clear 이상없음clear 비중(주제)Weight (subject) 1.341.34 1.341.34 1.341.34 1.31.3 주도(주제, KU)Lead (subject, KU) 9292 9292 9292 9090 비휘발분(주제, 중량 %)Non-volatile matter (subject, weight%) 8383 8383 8383 8080 건조시간(경화, h, 25 ℃)Drying time (curing, h, 25 캜) 1212 1212 1212 1515 가사시간(혼합, h, 20℃)Housekeeping time (mixing, h, 20 ° C) 66 66 66 55 흐름성(혼합, ㎛)Flowability (mixing, ㎛) 560560 570570 575575 510510 촉진 내후성(300h, (%))Promoting weatherability (300h, (%)) 9292 9393 9595 9090

상기 표 1에 나타난 바와 같이 실시예 1 내지 실시예 3에 따라 제조된 친환경 강재 코팅제 조성물의 성능은 비교예 1에 따라 제조된 코팅제 조성물에 비하여 우수하였다.As shown in Table 1, the performance of the environmentally friendly steel coating composition prepared according to Examples 1 to 3 was superior to that of the coating composition prepared according to Comparative Example 1.

<표면 마감 코팅제 조성물 >&Lt; Surface Finish Coating Agent Composition >

<실시예 4><Example 4>

수용성 불소 수지 65중량부, 폴리부틸렌테레프탈레이트 5중량부, 폴리에틸렌옥사이드 5중량부, 메틸아크릴레이트-비닐아세테이트 공중합체 5중량부, 트리페닐메톡시실란 5중량부, 황산바륨 5중량부, 지르코알루미네이트 5중량부, 실리콘 3중량부, 안료 2중량부 및 소포제 1중량부를 강제식 믹서에서 10분간 교반하여 표면 마감 코팅제 조성물을 제조하였다.65 parts by weight of water-soluble fluororesin, 5 parts by weight of polybutylene terephthalate, 5 parts by weight of polyethylene oxide, 5 parts by weight of methyl acrylate-vinyl acetate copolymer, 5 parts by weight of triphenylmethoxysilane, 5 parts by weight of barium sulfate, 5 parts by weight of koaluminate, 3 parts by weight of silicone, 2 parts by weight of pigment and 1 part by weight of defoamer were stirred in a forced mixer for 10 minutes to prepare a surface finish coating composition.

<실시예 5>&Lt; Example 5 >

수용성 불소 수지 55중량부, 폴리부틸렌테레프탈레이트 10중량부, 폴리에틸렌옥사이드 7.5중량부, 메틸아크릴레이트-비닐아세테이트 공중합체 7.5중량부, 트리페닐메톡시실란 5중량부, 황산바륨 5중량부, 지르코알루미네이트 5중량부, 실리콘 3중량부, 안료 2중량부 및 소포제 1중량부를 강제식 믹서에서 10분간 교반하여 표면 마감 코팅제 조성물을 제조하였다. 55 parts by weight of water-soluble fluororesin, 10 parts by weight of polybutylene terephthalate, 7.5 parts by weight of polyethylene oxide, 7.5 parts by weight of methyl acrylate-vinyl acetate copolymer, 5 parts by weight of triphenylmethoxysilane, 5 parts by weight of barium sulfate, 5 parts by weight of koaluminate, 3 parts by weight of silicone, 2 parts by weight of pigment and 1 part by weight of defoamer were stirred in a forced mixer for 10 minutes to prepare a surface finish coating composition.

<실시예 6>&Lt; Example 6 >

수용성 불소 수지 50중량부, 폴리부틸렌테레프탈레이트 15중량부, 폴리에틸렌옥사이드 10중량부, 메틸아크릴레이트-비닐아세테이트 공중합체 10중량부, 트리페닐메톡시실란 5중량부, 황산바륨 5중량부, 지르코알루미네이트 5중량부, 실리콘 3중량부, 안료 2중량부 및 소포제 1중량부를 강제식 믹서에서 10분간 교반하여 표면 마감 코팅제 조성물을 제조하였다. 50 parts by weight of water-soluble fluororesin, 15 parts by weight of polybutylene terephthalate, 10 parts by weight of polyethylene oxide, 10 parts by weight of methyl acrylate-vinyl acetate copolymer, 5 parts by weight of triphenylmethoxysilane, 5 parts by weight of barium sulfate, 5 parts by weight of koaluminate, 3 parts by weight of silicone, 2 parts by weight of pigment and 1 part by weight of defoamer were stirred in a forced mixer for 10 minutes to prepare a surface finish coating composition.

<시험예 2>&Lt; Test Example 2 &

실시예 4 내지 실시예 6에 따라 제조된 표면 마감 코팅제 조성물의 물성을 파악하기 위하여 제조된 표면 마감 코팅제 조성물을 불소 수지계 도료 (SPS-KPIC 5004-1757)에 의하여 건조도막 상태, 용기내에서 상태, 비휘발분 (백색), 연화도, 건조시간, 가사시간, 은폐율, 층간 부착성, 유연성, 내알칼리성, 내산성, 냉열반복시험, 내충격성, 촉진내후성 시험을 수행하여 각각의 결과를 하기 표 2에 나타내었다.To evaluate the physical properties of the surface finishing coating composition prepared according to Examples 4 to 6, the prepared surface finishing coating composition was coated with a fluororesin-based coating (SPS-KPIC 5004-1757) The results are shown in Table 2 below in terms of non-volatile matter (white), degree of softening, drying time, housekeeping time, concealment rate, interlayer adhesion, flexibility, alkali resistance, acid resistance, repetition test of cold and heat, Respectively.

구분division 실시예 4Example 4 실시예 5Example 5 실시예 6Example 6 건조 도막의 상태The state of the dry film 이상없음clear 이상없음clear 이상없음clear 용기내에서의 상태Condition in container 이상없음clear 이상없음clear 이상없음clear 비휘발분(주제,중량%) 백색Non-volatile matter (subject, weight%) white 5252 5353 5555 연화도(주제, NS)Softness (Topic, NS) 77 77 77 건조시간(경화, h, 25℃)Drying time (curing, h, 25 캜) 77 77 77 가사시간(혼합, h, 20℃)Housekeeping time (mixing, h, 20 ° C) 66 66 66 은폐율(백색, %)Concealment rate (white,%) 9292 9393 9494 층간부착성(중/상도)Interlayer adhesion (middle / top) 이상없음clear 이상없음clear 이상없음clear 유연성flexibility 이상없음clear 이상없음clear 이상없음clear 내알칼리성Alkali resistance 이상없음clear 이상없음clear 이상없음clear 내산성Acid resistance 이상없음clear 이상없음clear 이상없음clear 냉열반복시험Cold repeat test 이상없음clear 이상없음clear 이상없음clear 내충격성Impact resistance 이상없음clear 이상없음clear 이상없음clear 촉진 내후성(1,000h) 광택유지율Promoting weatherability (1,000h) Gloss retention 9191 9292 9393

상기 표 2에 나타난 바와 같이, 실시예 4 내지 실시예 6에 따라 제조된 표면 마감 코팅제 조성물은 기준을 상회하는 성능이 월등히 높았다.As shown in Table 2, the surface finish coating composition prepared according to Examples 4 to 6 had significantly higher performance than the standard.

이상, 본 발명의 바람직한 실시예를 들어 상세하게 설명하였으나, 본 발명은 상기 실시예에 한정되는 것은 아니며, 본 발명의 기술적 사상의 범위 내에서 해당 기술분야에서 통상의 지식을 가진 자에 의하여 여러 가지 변형이 가능하다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible.

Claims (7)

친환경 강재 코팅제 조성물로서,
성능개선 충전재 1∼60중량% 및 성능개선 혼화제 40∼99중량%를 포함하고,
상기 성능개선 충전재는 성능개선 충전재 중량대비 중질탄산칼슘(Ground Calcium Carbonate) 50∼85중량%, 깁사이트 1∼25중량%, 탄산마그네슘 0.1∼15중량%, 플루오린화나트륨 0.1∼15중량%, 규산염 0.01∼10중량%, 실리카겔 0.01∼10중량% 및 카올린 0.01∼10중량%를 포함하고,
상기 성능개선 혼화제는, 성능개선 혼화제 중량대비 수용성 에폭시 50∼99중량%, 메틸아크릴레이트-스티렌 공중합체 0.1∼25중량%, 폴리비닐클로라이드 0.1∼15중량%, 멜라민 0.01~10중량%, 지르코알루미네이트 0.01~10중량%, 에틸셀롤로오스 0.01∼10중량% 및 폴리아크릴아미드 0.01~10중량%를 포함하는
것을 특징으로 하는 친환경 강재 코팅제 조성물.
As an environmentally friendly steel coating composition,
1 to 60% by weight of a performance improving filler and 40 to 99% by weight of a performance improving admixture,
Wherein the performance improving filler comprises from 50 to 85% by weight of ground calcium carbonate, from 1 to 25% by weight of gibbsite, from 0.1 to 15% by weight of magnesium carbonate, from 0.1 to 15% by weight of sodium fluoride, 0.01 to 10 wt% of silica gel, 0.01 to 10 wt% of silica gel, and 0.01 to 10 wt% of kaolin,
Wherein the performance improving admixture comprises 50 to 99% by weight of water-soluble epoxy, 0.1 to 25% by weight of methyl acrylate-styrene copolymer, 0.1 to 15% by weight of polyvinyl chloride, 0.01 to 10% by weight of melamine, 0.01 to 10% by weight of aluminate, 0.01 to 10% by weight of ethylcellulose and 0.01 to 10% by weight of polyacrylamide
Wherein the coating composition is a coating composition.
제 1항에 있어서,
상기 성능개선 충전재는 질화알루미늄을 더 포함하는 것을 특징으로 하는 친환경 강재 코팅제 조성물.
The method according to claim 1,
Wherein the performance improving filler further comprises aluminum nitride.
제 2항에 있어서,
상기 성능개선 충전재는 징크옥사이드를 더 포함하는 것을 특징으로 하는 친환경 강재 코팅제 조성물.
3. The method of claim 2,
Wherein the performance improving filler further comprises zinc oxide.
제 1항에 있어서,
상기 성능개선 혼화제는 경화촉진제, 반응개시제, 폴리아미드, 안료, 소포제 중 선택된 어느 하나 이상을 더 포함하는 것을 특징으로 하는 친환경 강재 코팅제 조성물.
The method according to claim 1,
Wherein the performance improving admixture further comprises at least one selected from a curing accelerator, a reaction initiator, a polyamide, a pigment, and a defoaming agent.
제 1항 내지 제 4항 중 어느 한 항에 기재된 친환경 강재 코팅제 조성물을 이용하는 강 구조물의 표면보호·강화 방법으로서,
강 구조물 표면의 녹 또는 이물질을 제거하고, 제거된 부위의 홈 또는 스크레치를 퍼티재로 도포하여 평탄하도록 바탕면을 처리하는 단계;
상기 처리된 바탕면에 프라이머층을 형성하는 단계;
상기 프라이머층 상부에 상기 강구조물 표면보호용 강재 도장재 조성물을 도포하여 양생하는 단계; 및
양생된 후 표면 마감 코팅제를 도포하는 단계를
포함하는 것을 특징으로 하는 강 구조물의 표면보호·강화방법.
A method of protecting and strengthening a steel structure using the environmentally friendly steel coating composition according to any one of claims 1 to 4,
Removing the rust or foreign matter on the surface of the steel structure and applying the grooves or scratches of the removed portion with a putty material so as to smooth the surface of the ground;
Forming a primer layer on the treated substrate;
Coating a steel coating composition for protecting the steel structure surface on the primer layer to cure; And
Applying the surface finish coating agent after curing
And the surface protection and strengthening method of the steel structure.
제 5항에 있어서,
상기 표면 마감 코팅제 조성물은 수용성 불소 수지 10~70중량%, 폴리부틸렌테레프탈레이트 (poly butylene terephthalate) 0.1~30중량%, 폴리에틸렌옥사이드 0.1~25중량%, 메틸아크릴레이트-비닐아세테이트 공중합체 0.1~25중량%, 트리페닐메톡시실란 0.01~10중량%, 황산바륨 0.01~10중량%, 지르코알루미네이트 0.01~10중량%, 실리콘 0.01~10중량%, 안료 0.01~10중량% 및 소포제 0.01~10중량% 를 포함하는 것을 특징으로 하는 강 구조물의 표면보호·강화 방법.
6. The method of claim 5,
Wherein the surface finish coating composition comprises 10 to 70% by weight of a water-soluble fluororesin, 0.1 to 30% by weight of polybutylene terephthalate, 0.1 to 25% by weight of polyethylene oxide, 0.1 to 25% by weight of a methyl acrylate- 0.01 to 10% by weight of silicon, 0.01 to 10% by weight of a pigment, 0.01 to 10% by weight of a pigment and 0.01 to 10% by weight of a defoamer, 0.01 to 10% by weight of triphenylmethoxysilane, 0.01 to 10% By weight based on the total weight of the steel structure.
제 6항에 있어서,
상기 표면 마감 코팅제 조성물은 수성실리카졸 무기계 표면 마감 코팅제와 병용하여 사용하는 것을 특징으로 하는 겅 구조물의 표면보호·강화 방법. The method according to claim 6,
Wherein the surface finish coating composition is used in combination with an aqueous silica sol inorganic surface finish coating agent.
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