KR102415929B1 - Eco-friendly epoxy water-soluble paint composition for steel bridge protection coating and coating method for using the same - Google Patents
Eco-friendly epoxy water-soluble paint composition for steel bridge protection coating and coating method for using the same Download PDFInfo
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- C08K5/00—Use of organic ingredients
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- C08K5/101—Esters; Ether-esters of monocarboxylic acids
- C08K5/105—Esters; Ether-esters of monocarboxylic acids with phenols
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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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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/63—Additives non-macromolecular organic
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
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Abstract
Description
본 발명은 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물 및 이를 이용한 강교량 도장방법에 관한 것으로서, 보다 상세하게는 강교량의 표면 부식을 방지하고, 도막층이 장기간 외부 환경에 노출되어 수분 등의 기상 변화에도 변형되지 않는 방수 효과도 우수한 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물 및 이를 이용한 강교량 도장방법에 관한 것이다.The present invention relates to an eco-friendly epoxy water-soluble paint composition for a protective coating film for a steel bridge and a method for painting a steel bridge using the same, and more particularly, to prevent surface corrosion of a steel bridge, and the coating film layer is exposed to the external environment for a long period of time and is deformed even by weather changes such as moisture It relates to an eco-friendly epoxy water-soluble paint composition for a protective film on a steel bridge, which also has excellent waterproofing effect, and a method for painting a steel bridge using the same.
강 교량 등의 강판의 방식성을 향상시키기 위한 종래의 방법은 크롬을 염(salt) 또는 이온의 형태로 함유하고 있는 용액 조성물을 도금강판의 표면에 도장 및 열 건조 등의 방법으로 경화시키는 표면처리기술을 적용해 왔다.A conventional method for improving the corrosion resistance of steel plates such as steel bridges is surface treatment in which a solution composition containing chromium in the form of salt or ions is hardened by coating and heat drying on the surface of the plated steel plate. technology has been applied.
이와 같은 크롬 처리를 하는 것은 강판에 대하여 산화력이 있는 물질이 강판에 접촉하는 경우 도금강판 표면에 존재하는 크롬이 환원 및 산화되는 기전을 통해 도금강판의 부식을 억제할 수 있기 때문이다.Such chromium treatment is because corrosion of the plated steel sheet can be suppressed through a mechanism in which chromium present on the surface of the plated steel sheet is reduced and oxidized when a material having an oxidizing power for the steel sheet comes into contact with the steel sheet.
그러나 도금강판 등의 내식성 증대를 목적으로 사용되는 크롬 성분으로 특히 6가 이온의 크롬(Cr6+)은 토양 및 수질 오염을 일으키는 환경유해물질로 알려져 있다.However, as a chromium component used for the purpose of increasing the corrosion resistance of plated steel sheets, in particular, hexavalent ion chromium (Cr6+) is known as an environmentally harmful substance that causes soil and water pollution.
일예로 유럽에서는 2003년 이후부터 일반적으로 6가 이온의 크롬이 함유된 강판의 사용을 규제하고 있으며, 가전제품 분야에서도 크롬을 함유하지 않는 전처리 제품이 요구되어 왔다.For example, in Europe, the use of steel sheets containing chromium of hexavalent ions has been generally regulated since 2003, and pretreatment products not containing chromium have been required in the field of home appliances.
이러한 점에서 기존의 크롬의 방식성 기능을 보유하면서 작업성 및 경제성 등을 충족하는 제품에 대한 연구가 진행되고 있다.In this regard, research on products that satisfy the workability and economic feasibility while retaining the anticorrosive function of the existing chrome are in progress.
이의 일환으로 방식도료에 대한 개발이 이루어지고 있으며, 이러한 방식도료로는 에폭시 도료가 보편적으로 사용되고 있다. 에폭시 도료는 방식성, 내수성 및 내약품성 등이 우수하다.As a part of this, anticorrosive paints are being developed, and epoxy paints are commonly used as such anticorrosive paints. Epoxy paint has excellent corrosion resistance, water resistance and chemical resistance.
이러한 에폭시 도료를 비롯한 방식도료는 보편적인 도료와 같이 유기용제를 용매로 하는데, 유기용제를 포함하는 도료의 경우 밀폐된 공간에서 작업성이 나쁘고 인체에 유해할 수 있으며 또한 환경오염 등의 문제를 내포하고 있다.Anticorrosive paints including epoxy paints use organic solvents as solvents like general paints. In the case of paints containing organic solvents, workability in a closed space is poor, it can be harmful to the human body, and also contains problems such as environmental pollution. are doing
본 발명은 상기와 같은 종래기술의 문제점과 과거로부터 요청되어온 기술적 과제를 해결하기 위하여 안출된 것으로서, 본 발명은 강교량의 표면에 도포하여 우수한 방식 효과를 얻을 수 있고 나아가 방수효과까지 얻을 수 있는 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물 및 이를 이용한 강교량 도장방법을 제공하는 것을 목적으로 한다.The present invention has been devised to solve the problems of the prior art as described above and the technical problems that have been requested from the past. An object of the present invention is to provide an eco-friendly epoxy water-soluble paint composition for a coating film and a steel bridge painting method using the same.
구체적으로, 본 발명은 조성물의 전체 중량을 기준으로, 조성물의 전체 중량을 기준으로, 에폭시 수지 30 내지 40 중량%, 폴리페놀 5 내지 10 중량%, 하이포아인산(H3PO2) 5 내지 10 중량%, 인산금속염 5 내지 10 중량% , 알코올류 10 내지 40 중량% 및 잔부인 물을 포함하는 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물을 제공한다.Specifically, the present invention, based on the total weight of the composition, based on the total weight of the composition, 30 to 40% by weight of an epoxy resin, 5 to 10% by weight of a polyphenol, 5 to 10% by weight of hypophosphorous acid (H 3 PO 2 ) %, 5 to 10% by weight of metal phosphate, 10 to 40% by weight of alcohols, and water as the balance.
본 발명은 3-요오드-2-프로피닐 부틸 카바메이트를 더 포함할 수 있다.The present invention may further comprise 3-iodine-2-propynyl butyl carbamate.
본 발명은 상기한 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물을 이용하여 강교량 도장방법을 제공한다.The present invention provides a method for painting a steel bridge using the above-described eco-friendly epoxy water-soluble paint composition for a protective coating film for a steel bridge.
상세하게는, 교량의 콘크리트 표면을 연마하는 연마단계, 상기 연마된 교량의 표면에 에폭시계 프라이머를 도포하는 프라이머 도포단계, 및 상기 프라이머 도포과정을 거친 표면에 상기 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물을 도포한 후 건조시키는 단계를 포함한다.Specifically, a polishing step of grinding the concrete surface of the bridge, a primer application step of applying an epoxy-based primer to the surface of the polished bridge, and an eco-friendly epoxy water-soluble paint composition for the steel bridge protective film on the surface that has been subjected to the primer application process It includes a step of drying after coating.
본 발명에 따른 강교량 도장방법에 있어서, 상기 프라이머 도포단계는 에폭시계 프라이머를 130 내지 240 g/m2로 도포하고, 상기 방식단계는 상기 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물을 100 내지 200g/m2로 도포하는 것일 수 있다. In the steel bridge painting method according to the present invention, the primer application step is to apply an epoxy-based primer at 130 to 240 g/m 2 , and the anticorrosive step is to apply the eco-friendly epoxy water-soluble paint composition for the steel bridge protective coating film to 100 to 200 g/m 2 may be applied.
본 발명은 강교량 표면에서 발생할 수 있는 철청이 본 발명에 따른 도료로 인해 생성되지 않는 방식 효과가 우수한 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물을 제공한다.The present invention provides an eco-friendly epoxy water-soluble paint composition for a protective coating film for a steel bridge, which is excellent in anticorrosive effect in which iron rust, which may occur on the surface of a steel bridge, is not generated by the paint according to the present invention.
또한, 본 발명에 따른 도료 조성물이 3-요오드-2-프로피닐 부틸 카바메이트를 더 포함할 경우 방수효과를 가지는 효과가 있다.In addition, when the coating composition according to the present invention further contains 3-iodine-2-propynyl butyl carbamate, there is an effect of having a waterproof effect.
도 1은 본 발명에 따른 강 교량 도장방법의 순서도이다.1 is a flowchart of a steel bridge painting method according to the present invention.
이하에서, 각 구성을 보다 상세히 설명하나, 이는 하나의 예시에 불과할 뿐, 본 발명의 권리범위가 다음 내용에 의해 제한되지 아니한다.Hereinafter, each configuration will be described in more detail, but this is only an example, and the scope of the present invention is not limited by the following content.
본 발명은 강교량의 표면을 코팅하기 위한 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물로서, 에폭시 수지, 폴리페놀, 하이포아인산(H3PO2), 인산금속염, 알코올류 및 잔부인 물을 포함한다. The present invention is an eco-friendly epoxy water-soluble paint composition for a protective coating film for a steel bridge for coating the surface of a steel bridge, and includes an epoxy resin, polyphenol, hypophosphorous acid (H 3 PO 2 ), metal phosphate salt, alcohols, and the remainder water.
상기 에폭시 수지는 해당 기술분야에서 사용되는 것이면 특별히 제한되지 않고 사용이 가능하나, 바람직하게는 비스페놀A형 에폭시 수지, 비스페놀F형 에폭시 수지를 사용할 수 있고, 가장 바람직하게는, 비스페놀A형 에폭시 수지를 사용할 수 있다.The epoxy resin is not particularly limited as long as it is used in the art and can be used, but preferably a bisphenol A-type epoxy resin or a bisphenol F-type epoxy resin may be used, and most preferably, a bisphenol A-type epoxy resin can be used
상기 에폭시 수지는 조성물 전체 중량을 기준으로 30 내지 40 중량%로 포함될 수 있다.The epoxy resin may be included in an amount of 30 to 40% by weight based on the total weight of the composition.
이보다 소량으로 첨가되는 경우에는, 교량표면과의 접착성이 떨어져, 교량의 수명이 감축되는 문제가 있고, 상기 함량보다 과량으로 첨가되는 경우에는, 시간 경과 및 침투수와의 접촉에 의해 도막의 손상이 유발될 수 있는 문제가 있다.When added in a smaller amount than this, the adhesiveness with the bridge surface is lowered, and there is a problem that the life of the bridge is reduced. There are problems that can cause this.
상기 에폭시 수지의 점도는 5000 내지 10,000 cps인 것이 바람직하며, 이는 우수한 작업성을 확보할 수 있는 점도이다.The viscosity of the epoxy resin is preferably 5000 to 10,000 cps, which is a viscosity that can ensure excellent workability.
상기 폴리페놀은 방청성 및 환원성을 향상하기 위한 것으로서, 교량구조물을 구성하는 강재의 방청효과를 향상시킨다. 상기 폴리페놀은 대표적으로 카테킨산일 수 있다.The polyphenol is for improving rust prevention and reducing properties, and improves the rust prevention effect of steel materials constituting the bridge structure. The polyphenol may be typically catechinic acid.
상기 폴리페놀은 조성물의 전체 중량을 기준으로, 5 내지 10 중량%로 포함될 수 있다.The polyphenol may be included in an amount of 5 to 10% by weight based on the total weight of the composition.
본 발명은 또한, 환원제로서 하이포아인산(H3PO2)을 조성물 전체 중량을 기준으로 5 내지 10 중량%로 포함할 수 있다.The present invention may also include hypophosphorous acid (H 3 PO 2 ) as a reducing agent in an amount of 5 to 10% by weight based on the total weight of the composition.
상기 함량보다 과량으로 첨가되는 경우에는 도막 강도 내수성이 저하되는문제가 발생할 수 있고, 상기 함량보다 소량으로 첨가되는 경우에는, 교량에 생성되는 철청 등을 효과적으로 방지할 수 없는 문제가 발생할 수 있다.When added in an excess of the above content, there may occur a problem in that the coating film strength and water resistance is lowered, and when added in a small amount than the above content, there may be a problem that cannot effectively prevent iron rust or the like generated on the bridge.
본 발명은 또한, 인산금속염을 조성물 전체 중량을 기준으로 5 내지 10 중량%로 포함할 수 있다. 이를 상기 환원제인 하이포아인산(H3PO2)과 배합할 경우, 철청과의 환원 반응의 지속성이 향상되어, 도막의 방식 능력이 향상될 수 있다. 상기 인산금속염은 인산아연, 인산알루미늄, 인산칼슘, 인산망간 등일 수 있다.The present invention may also include a metal phosphate salt in an amount of 5 to 10% by weight based on the total weight of the composition. When this is mixed with the reducing agent, hypophosphorous acid (H 3 PO 2 ), the continuity of the reduction reaction with iron blue is improved, and the anticorrosive ability of the coating film can be improved. The metal phosphate salt may be zinc phosphate, aluminum phosphate, calcium phosphate, manganese phosphate, or the like.
본 발명은 또한, 알코올류는 탄소수가 5 이하의 저급 알코올이 철청으로의 침투성 면보다 바람직하다. In the present invention, as for alcohols, lower alcohols having 5 or less carbon atoms are more preferable than permeability to iron blue.
상기 알코올류는 조성물 전체 중량을 기준으로 10 내지 40 중량%로 포함할 수 있다. 상기 알코올류는 메탄올, 에탄올, n-프로판올, n-부탄올, n-펜탄올 등일 수 있다.The alcohol may be included in an amount of 10 to 40% by weight based on the total weight of the composition. The alcohol may be methanol, ethanol, n-propanol, n-butanol, n-pentanol, or the like.
본 발명은 추가로, 3-요오드-2-프로피닐 부틸 카바메이트를 더 포함할 수 있으며, 이를 첨가할 경우 방수효과가 향상되며, 접착력도 향상된다.The present invention may further include 3-iodine-2-propynyl butyl carbamate, and when it is added, the waterproof effect is improved and the adhesion is also improved.
상기 3-요오드-2-프로피닐 부틸 카바메이트는 조성물의 전체 중량을 기준으로 5 내지 10 중량%로 포함될 수 있다.The 3-iodine-2-propynyl butyl carbamate may be included in an amount of 5 to 10% by weight based on the total weight of the composition.
상기 함량보다 과량으로 첨가되는 경우에는, 에폭시 수지의 경화시간이 길어져 작업성이 떨어지는 문제가 있고, 상기 함량보다 소량으로 첨가되는 경우에는, 이를 첨가하지 않는 경우와 비교하여 방수력에 큰 차이가 없는 문제가 있다.When added in excess than the above content, there is a problem that the curing time of the epoxy resin is prolonged and workability is deteriorated. there is
본 발명엔 따른 상기의 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물을 이용한 강교량 도장방법은, 교량의 콘크리트 표면을 연마하는 연마단계, 상기 연마된 교량의 표면에 에폭시계 프라이머를 도포하는 프라이머 도포단계, 및 상기 추가 프라이머 도포과정을 거친 표면에 상기 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물을 도포한 후 건조시키는 방식단계를 포함한다.According to the present invention, the steel bridge painting method using the eco-friendly epoxy water-soluble paint composition for a protective coating film for a steel bridge according to the present invention includes a polishing step of polishing the concrete surface of the bridge, a primer application step of applying an epoxy-based primer to the polished surface of the bridge, and and applying the eco-friendly epoxy water-soluble paint composition for a steel bridge protective film to the surface that has been subjected to the additional primer application process, and then drying it.
구체적으로, 상기 연마단계는 완성된 교량의 콘크리트 표면을 제거하고, 이의 표면에 잔류하는 불순물을 제거하는 과정을 의미한다. Specifically, the polishing step refers to a process of removing the concrete surface of the completed bridge and removing impurities remaining on the surface thereof.
신규로 축조된 교량의 경우에도, 일정시간이 경과함에 따라 표면이 일부 산화되므로, 가능한 산화된 콘크리트 부위를 제거한 후에 다음과정을 진행한다.Even in the case of a newly constructed bridge, the surface is partially oxidized over a certain period of time.
표면이 연마된 교량의 콘크리트 표면에 에폭시계 프라이머를 도포하는 프라이머 도포단계를 거치는데, 이 과정을 포함함으로써, 교량의 표면과 도막층의 접착력을 더욱 향상시킬 수 있다.A primer application step of applying an epoxy-based primer to the concrete surface of the bridge whose surface has been polished is included. By including this process, the adhesion between the surface of the bridge and the coating layer can be further improved.
상기 에폭시계 프라이머는 콘크리트 표면에 사용하는 것이면 특별한 제한 없이 시중의 제품을 사용하는 것이 가능하다.If the epoxy-based primer is used on a concrete surface, it is possible to use a commercially available product without any particular limitation.
상기 에폭시 프라이머를 도포하는 과정을 거침으로써, 본 발명에 따른 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물이 형성하는 코팅층과 교량표면의 접착력이 더욱 향상되는 효과가 있다.By going through the process of applying the epoxy primer, there is an effect that the adhesion between the coating layer and the bridge surface formed by the eco-friendly epoxy water-soluble paint composition for a protective coating film for a steel bridge according to the present invention is further improved.
한편, 상기 프라이머 도포단계를 거친 후에는 프라이머층의 완전히 건조되도록 충분한 시간이 흐른 후에 방식단계를 수행한다.On the other hand, after passing through the primer application step, the corrosion protection step is performed after a sufficient time has elapsed so that the primer layer is completely dried.
본 발명에 따른 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물을 이의 상단면에 도포한 후, 건조시키는 과정을 수행한다. 건조방법은 바람직하게는 자연건조방법이면 충분하다.After applying the eco-friendly epoxy water-soluble paint composition for a steel bridge protective film according to the present invention to the upper surface thereof, a process of drying is performed. The drying method is preferably a natural drying method.
상기 프라이머와 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물을 도포하는 방법은, 스프레이 분사, 그라비아 코팅, 브러쉬 코팅, 나이프 코팅 등 어떠한 방법을 사용하더라도 무방하다.As a method of applying the primer and the eco-friendly epoxy water-soluble paint composition for a protective coating film on a steel bridge, any method such as spray spraying, gravure coating, brush coating, or knife coating may be used.
한편, 상기 프라이머 도포단계는 에폭시계 프라이머를 130 내지 240 g/m2로 도포하고, 상기 방식단계는 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물을 100 내지 200g/m2로 도포하는 것일 수 있다.Meanwhile, in the primer application step, an epoxy-based primer is applied at 130 to 240 g/m 2 , and the anticorrosive step is to apply an eco-friendly epoxy water-soluble paint composition for a steel bridge protective coating film at 100 to 200 g/m 2 .
이하에서는, 실시예에 의하여 본 발명을 더욱 상세히 설명하나, 이는 본 발명을 이해하기 위한 하나의 예시에 불과할 뿐, 본 발명의 권리범위가 이에 의해 제한되지 아니한다.Hereinafter, the present invention will be described in more detail by way of Examples, but this is only an example for understanding the present invention, and the scope of the present invention is not limited thereto.
제조예production example
하기 표 1을 참고하여, 실시예와 비교예의 도료 조성물을 제조하였다.With reference to Table 1 below, the coating compositions of Examples and Comparative Examples were prepared.
상기 실시예 1~2와 비교예 1~3에 따른 도료 조성물을 이용하여, 강판 기재의 표면에 도포량100 g/m2의 비율로 도포하고 25℃에서 1일 간 건조를 하였다. 이와 같 이 도막이 형성된 실시예 1~2 및 비교예 1~3의 강판을 이용하여 하기 표 2의 방법으로 물성을 측정하 고, 그 결과를 하기 표 3에 나타내었다. 각 물성은 ◎: 매우 우수, ○: 우수, △: 불량으로 평가하였다.Using the coating compositions according to Examples 1 and 2 and Comparative Examples 1 to 3, the coating composition was applied to the surface of the steel sheet at a rate of 100 g/m 2 and dried at 25° C. for 1 day. Physical properties were measured by the method of Table 2 below using the steel sheets of Examples 1 to 2 and Comparative Examples 1 to 3 on which the coating film was formed as described above, and the results are shown in Table 3 below. Each physical property was evaluated as (double-circle): very good, (circle): excellent, and (triangle|delta): poor.
본 발명에 따른 실시예 1,2와 같이, 폴리페놀의 하나인 카테킨산과 아이포아인산 및 인산금속염(인산망간)을 모두 포함할 경우 방식성이 매우 우수함을 알 수 있으며, 추가로 3-요오드-2-프로피닐 부틸 카바메이트까지 더 포함할 경우 방수성도 우수함을 확인할 수 있었다.As in Examples 1 and 2 according to the present invention, it can be seen that corrosion resistance is very excellent when all of catechinic acid, lipophosphorous acid, and metal phosphate (manganese phosphate), which are one of polyphenols, are included, and in addition, 3-iodine-2 - When propynyl butyl carbamate was further included, it was confirmed that the waterproofness was excellent.
Claims (3)
조성물의 전체 중량을 기준으로, 에폭시 수지 30 내지 40 중량%, 폴리페놀 5 내지 10 중량%, 하이포아인산(H3PO2) 5 내지 10 중량%, 인산 금속염 5 내지 10 중량%, 알코올류 10 내지 40 중량% 및 잔부인 물을 포함하는 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물.
As an eco-friendly epoxy water-soluble paint composition for a steel bridge protective film for coating the surface of a steel bridge,
Based on the total weight of the composition, 30 to 40% by weight of epoxy resin, 5 to 10% by weight of polyphenol, 5 to 10% by weight of hypophosphorous acid (H 3 PO 2 ), 5 to 10% by weight of metal phosphate salt, 10 to alcohol An eco-friendly epoxy water-soluble paint composition for a steel bridge protective film containing 40 wt% and the remainder water.
상기 도료 조성물은 3-요오드-2-프로피닐 부틸 카바메이트를 더 포함하는 것을 특징으로 하는 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물.
The method of claim 1,
The paint composition further comprises 3-iodine-2-propynyl butyl carbamate.
교량의 콘크리트 표면을 연마하는 연마단계;
상기 연마된 교량의 표면에 에폭시계 프라이머를 도포하는 프라이머 도포단계; 및
상기 프라이머 도포과정을 거친 표면에 제1항에 따른 강교량 보호도막용 친환경 에폭시 수용성 도료 조성물을 도포한 후 건조시키는 방식단계;를 포함하는 강교량 도장방법.It relates to a steel bridge painting method using the eco-friendly epoxy water-soluble paint composition for a steel bridge protective film according to claim 1,
A grinding step of grinding the concrete surface of the bridge;
A primer application step of applying an epoxy-based primer to the surface of the polished bridge; and
A method for painting a steel bridge, comprising: applying the eco-friendly epoxy water-soluble paint composition for a steel bridge protective film according to claim 1 to the surface that has been subjected to the primer application process and then drying it.
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