JP2013199621A - Water-based epoxy resin paint composition, and anticorrosive painting method using the same - Google Patents
Water-based epoxy resin paint composition, and anticorrosive painting method using the same Download PDFInfo
- Publication number
- JP2013199621A JP2013199621A JP2012070092A JP2012070092A JP2013199621A JP 2013199621 A JP2013199621 A JP 2013199621A JP 2012070092 A JP2012070092 A JP 2012070092A JP 2012070092 A JP2012070092 A JP 2012070092A JP 2013199621 A JP2013199621 A JP 2013199621A
- Authority
- JP
- Japan
- Prior art keywords
- epoxy resin
- coating composition
- water
- coating
- viscosity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
本発明は、水性エポキシ樹脂塗料組成物及びそれを用いた防食塗装方法に関し、特には、防食性に優れる水性エポキシ樹脂塗料組成物に関するものである。 The present invention relates to an aqueous epoxy resin coating composition and an anticorrosion coating method using the same, and particularly to an aqueous epoxy resin coating composition having excellent anticorrosion properties.
従来、有機溶剤系エポキシ樹脂塗料による下塗りは、その品質が日本工業規格等において規格化されており、橋梁やプラント等の構造物に防食性を付与する目的として広く使用されている。 Conventionally, undercoating with an organic solvent-based epoxy resin paint has been standardized in quality according to Japanese Industrial Standards, and is widely used for the purpose of imparting anticorrosive properties to structures such as bridges and plants.
しかしながら、近年、大気汚染防止や省資源等の観点から、従来の有機溶剤系エポキシ樹脂塗料から水性エポキシ樹脂塗料への転換が強く要望されるようになってきている。 However, in recent years, there has been a strong demand for conversion from conventional organic solvent-based epoxy resin paints to water-based epoxy resin paints from the viewpoints of air pollution prevention and resource saving.
例えば、特開２００９−１４９７９１号公報（特許文献１）には、エポキシ樹脂エマルジョンを含む水性防食塗料と、該水性防食塗料を基材面に塗装する防食塗装方法とが提案されている。しかしながら、特開２００９−１４９７９１号公報に記載の水性防食塗料には、その粘性が適当でないと、該水性防食塗料を所望の厚みに塗り付けることができなかったり、平滑な塗膜が形成されず、塗膜の一部に薄い箇所が生じたり、期待される防食性が得られなかったりといった実用上の問題が存在していた。 For example, Japanese Unexamined Patent Application Publication No. 2009-149791 (Patent Document 1) proposes an aqueous anticorrosive paint containing an epoxy resin emulsion and an anticorrosive coating method for applying the aqueous anticorrosive paint on a substrate surface. However, the water-based anticorrosive paint described in JP-A-2009-149791 cannot be applied to a desired thickness unless the viscosity is appropriate, or a smooth coating film is not formed, There have been practical problems such that a thin portion is formed in a part of the coating film and the expected anticorrosive property cannot be obtained.
そこで、本発明の目的は、上記従来技術の問題を解決し、防食性に優れる水性エポキシ樹脂塗料組成物を提供することにある。また、本発明の目的は、かかる水性エポキシ樹脂塗料組成物を用いた防食塗装方法を提供することにある。 Then, the objective of this invention is providing the water-based epoxy resin coating composition which is excellent in corrosion resistance, solving the problem of the said prior art. Moreover, the objective of this invention is providing the anticorrosion coating method using this water-based epoxy resin coating composition.
本発明者は、上記目的を達成するために鋭意検討した結果、水性塗料組成物にエポキシ樹脂エマルジョンとアミン樹脂エマルジョンとを使用し、特定のずり速度における水性塗料組成物の粘度を特定の範囲内に調整することによって、防食性に優れる水性エポキシ樹脂塗料組成物が得られ、また、該水性エポキシ樹脂塗料組成物の使用により平滑な塗膜をも形成できることを見出し、本発明を完成させるに至った。 As a result of intensive studies to achieve the above object, the present inventor has used an epoxy resin emulsion and an amine resin emulsion in an aqueous coating composition, and the viscosity of the aqueous coating composition at a specific shear rate is within a specific range. By adjusting to, it was found that a water-based epoxy resin coating composition having excellent anticorrosion properties was obtained, and that a smooth coating film could be formed by using the water-based epoxy resin coating composition, thereby completing the present invention. It was.
即ち、本発明の水性エポキシ樹脂塗料組成物は、エポキシ樹脂エマルジョンを含む主剤とアミン樹脂エマルジョンを含む硬化剤とを含んでなり、ずり速度０．１（１／ｓ）における粘度が１．０〜５００（Ｐａ・ｓ、２３℃）であり、ずり速度１０００（１／ｓ）における粘度が０．０１０〜１（Ｐａ・ｓ、２３℃）であることを特徴とする。 That is, the aqueous epoxy resin coating composition of the present invention comprises a main agent containing an epoxy resin emulsion and a curing agent containing an amine resin emulsion, and has a viscosity at a shear rate of 0.1 (1 / s) of 1.0 to 1.0. 500 (Pa · s, 23 ° C.), and the viscosity at a shear rate of 1000 (1 / s) is 0.010 to 1 (Pa · s, 23 ° C.).
本発明の水性エポキシ樹脂塗料組成物の好適例においては、前記主剤のｐＨが５〜９であり、且つ前記水性エポキシ樹脂塗料組成物のｐＨが７〜１１である。 In the suitable example of the water-based epoxy resin coating composition of this invention, the pH of the said main ingredient is 5-9, and the pH of the said water-based epoxy resin coating composition is 7-11.
本発明の水性エポキシ樹脂塗料組成物の他の好適例においては、アミン樹脂エマルジョン中に含まれるポリアミン樹脂が、アダクトタイプの変性ポリアミン樹脂である。 In another preferred embodiment of the aqueous epoxy resin coating composition of the present invention, the polyamine resin contained in the amine resin emulsion is an adduct-type modified polyamine resin.
また、本発明の第一の防食塗装方法は、上記の水性エポキシ樹脂塗料組成物を被塗装面上に塗装することを特徴とする。 The first anticorrosion coating method of the present invention is characterized in that the above-mentioned aqueous epoxy resin coating composition is applied onto a surface to be coated.
更に、本発明の第二の防食塗装方法は、上記の水性エポキシ樹脂塗料組成物を被塗装面上に塗装することによって、該被塗装面上に塗膜を形成し、更に、該塗膜上に、該水性エポキシ樹脂塗料組成物以外の水性塗料を塗装することを特徴とする。 Furthermore, the second anticorrosion coating method of the present invention comprises forming a coating film on the surface to be coated by coating the above-mentioned aqueous epoxy resin coating composition on the surface to be coated. In addition, a water-based paint other than the water-based epoxy resin paint composition is applied.
本発明によれば、水性塗料組成物にエポキシ樹脂エマルジョンとアミン樹脂エマルジョンとを使用し、特定のずり速度における塗料組成物の粘度を特定の範囲内に調整することによって、作業性及び防食性に優れる水性エポキシ樹脂塗料組成物を提供することができる。また、かかる水性エポキシ樹脂塗料組成物を被塗装面上に塗装することによって、平滑な塗膜を形成することができる。 According to the present invention, an epoxy resin emulsion and an amine resin emulsion are used in an aqueous coating composition, and the workability and anticorrosion properties are improved by adjusting the viscosity of the coating composition at a specific shear rate within a specific range. An excellent aqueous epoxy resin coating composition can be provided. Moreover, a smooth coating film can be formed by coating this aqueous epoxy resin coating composition on the surface to be coated.
＜水性エポキシ樹脂塗料組成物＞
本発明の水性エポキシ樹脂塗料組成物は、エポキシ樹脂エマルジョンを含む主剤とアミン樹脂エマルジョンを含む硬化剤とを含んでなり、ずり速度０．１（１／ｓ）における粘度が１．０〜５００（Ｐａ・ｓ、２３℃）であり、ずり速度１０００（１／ｓ）における粘度が０．０１０〜１（Ｐａ・ｓ、２３℃）であることを特徴とする。本発明によれば、エポキシ樹脂エマルジョンとアミン樹脂エマルジョンを組み合わせて使用した上で、水性エポキシ樹脂塗料組成物の粘度が上述の特定した範囲内にあるため、作業性及び防食性に優れており、防食性に優れる平滑な塗膜を形成することができる。なお、水性エポキシ樹脂塗料組成物とは、エポキシ樹脂及び水を含有する塗料組成物を意味する。
<Water-based epoxy resin coating composition>
The aqueous epoxy resin coating composition of the present invention comprises a main agent containing an epoxy resin emulsion and a curing agent containing an amine resin emulsion, and has a viscosity at a shear rate of 0.1 (1 / s) of 1.0 to 500 ( The viscosity at a shear rate of 1000 (1 / s) is 0.010 to 1 (Pa · s, 23 ° C.). According to the present invention, the epoxy resin emulsion and the amine resin emulsion are used in combination, and the viscosity of the aqueous epoxy resin coating composition is within the above specified range. A smooth coating film having excellent anticorrosion properties can be formed. The aqueous epoxy resin coating composition means a coating composition containing an epoxy resin and water.
本発明の水性エポキシ樹脂塗料組成物は、ずり速度０．１（１／ｓ）における粘度が１．０〜５００（Ｐａ・ｓ、２３℃）であり、ずり速度１０００（１／ｓ）における粘度が０．０１０〜１（Ｐａ・ｓ、２３℃）であることを要する。ずり速度０．１（１／ｓ）における粘度が１．０（Ｐａ・ｓ、２３℃）未満であり且つずり速度１０００（１／ｓ）における粘度が０．０１０（Ｐａ・ｓ、２３℃）未満であると、粘度が低くなりすぎ、所定の膜厚が得られず、期待される防食性が得られない。一方、ずり速度０．１（１／ｓ）における粘度が５００（Ｐａ・ｓ、２３℃）を超えて且つずり速度１０００（１／ｓ）における粘度が１（Ｐａ・ｓ、２３℃）を超えると、粘度が高くなりすぎ、レベリング性が悪化するため、膜厚が部分的に薄くなる箇所ができ、期待される防食性が得られない。 The aqueous epoxy resin coating composition of the present invention has a viscosity at a shear rate of 0.1 (1 / s) of 1.0 to 500 (Pa · s, 23 ° C.), and a viscosity at a shear rate of 1000 (1 / s). Is required to be 0.010 to 1 (Pa · s, 23 ° C.). The viscosity at a shear rate of 0.1 (1 / s) is less than 1.0 (Pa · s, 23 ° C.) and the viscosity at a shear rate of 1000 (1 / s) is 0.010 (Pa · s, 23 ° C.). If it is less than 1, the viscosity becomes too low, the predetermined film thickness cannot be obtained, and the expected anticorrosive property cannot be obtained. On the other hand, the viscosity at a shear rate of 0.1 (1 / s) exceeds 500 (Pa · s, 23 ° C.) and the viscosity at a shear rate of 1000 (1 / s) exceeds 1 (Pa · s, 23 ° C.). Then, the viscosity becomes too high and the leveling property is deteriorated, so that a portion where the film thickness is partially reduced is formed, and the expected anticorrosive property cannot be obtained.
なお、本発明の水性エポキシ樹脂塗料組成物において、０．１（１／ｓ）と１０００（１／ｓ）の２つのずり速度を基準にして粘度を規定した理由は、０．１（１／ｓ）のずり速度が塗装直後の塗料の粘性を指し、１０００（１／ｓ）のずり速度が塗装時の塗料の粘性を指し、この塗装時から塗装直後の塗料の粘性がタレ性及びレベリング性に相関しているからである。また、本発明の水性エポキシ樹脂塗料組成物の粘度を上述の特定した範囲内に調整する方法としては、例えば、増粘剤、水等を使用する手法が挙げられる。 In the water-based epoxy resin coating composition of the present invention, the reason why the viscosity was defined based on two shear rates of 0.1 (1 / s) and 1000 (1 / s) is 0.1 (1 / The shear rate of s) indicates the viscosity of the paint immediately after coating, the shear rate of 1000 (1 / s) indicates the viscosity of the paint at the time of painting, and the viscosity of the paint immediately after coating from the time of painting is sagging and leveling. It is because it correlates with. Moreover, as a method of adjusting the viscosity of the aqueous epoxy resin coating composition of the present invention within the above-specified range, for example, a method using a thickener, water or the like can be mentioned.
本発明の水性エポキシ樹脂塗料組成物は、上記主剤のｐＨが５〜９であり且つ該水性エポキシ樹脂塗料組成物のｐＨが７〜１１であることが好ましい。主剤及び水性エポキシ樹脂塗料組成物のｐＨが上記の特定した範囲から外れると、塗装作業性が低下するおそれがある。なお、本発明の水性エポキシ樹脂塗料組成物において、主剤と水性エポキシ樹脂塗料組成物の２つのｐＨを規定した理由は、主剤のｐＨが貯蔵時の安定性に影響し、水性エポキシ樹脂塗料のｐＨが塗料の粘性に影響するからである。また、主剤及び水性エポキシ樹脂塗料組成物のｐＨを上述の特定した範囲内に調整する方法としては、ｐＨ調整剤等を使用する手法等も挙げられる。 In the aqueous epoxy resin coating composition of the present invention, the pH of the main agent is preferably 5 to 9, and the pH of the aqueous epoxy resin coating composition is preferably 7 to 11. If the pH of the main agent and the aqueous epoxy resin coating composition is out of the above specified range, the coating workability may be reduced. In the aqueous epoxy resin coating composition of the present invention, the two pH values of the main agent and the aqueous epoxy resin coating composition are specified because the pH of the main agent affects the stability during storage, and the pH of the aqueous epoxy resin coating is determined. This affects the viscosity of the paint. Moreover, the method etc. which use a pH adjuster etc. are mentioned as a method of adjusting pH of a main ingredient and a water-based epoxy resin coating composition in the above-mentioned specified range.
＜エポキシ樹脂エマルジョンを含む主剤＞
本発明の水性エポキシ樹脂塗料組成物は、エポキシ樹脂エマルジョンを含む成分と、硬化剤としてのアミン樹脂エマルジョンを含む成分とを組み合わせることによって得られるが、本発明においては、このエポキシ樹脂エマルジョンを含む成分を主剤という。なお、エポキシ樹脂エマルジョンとは、エポキシ樹脂が水等の水性媒体中で分散してなる乳濁液を意味する。
<Main agent containing epoxy resin emulsion>
The aqueous epoxy resin coating composition of the present invention is obtained by combining a component containing an epoxy resin emulsion and a component containing an amine resin emulsion as a curing agent. In the present invention, the component containing this epoxy resin emulsion is used. Is called the main agent. The epoxy resin emulsion means an emulsion in which an epoxy resin is dispersed in an aqueous medium such as water.
上記エポキシ樹脂エマルジョンを構成するエポキシ樹脂は、１分子中に少なくとも２個のエポキシ基を有する樹脂である限り、特に限定されないが、例えば、多価アルコール又は多価フェノールとハロヒドリンとを反応させて得られるものであり、具体例としては、ビスフェノールＡ型エポキシ樹脂、ハロゲン化ビスフェノールＡ型エポキシ樹脂、ノボラック型エポキシ樹脂、ポリグリコール型エポキシ樹脂、ビスフェノールＦ型エポキシ樹脂、エポキシ化油、１，６−ヘキサンジオールジグリシジルエーテル及びネオペンチルグリコールジグリシジルエーテル等が挙げられる。これらの中でも、塗膜の機械的耐久性や防食性、被塗装面（例えば基材表面）との付着性等の観点から、ビスフェノールＡ型エポキシ樹脂及びビスフェノールＦ型エポキシ樹脂が好ましい。なお、これらエポキシ樹脂は、単独で用いてもよく、二種以上を組み合わせて用いてもよい。 The epoxy resin constituting the epoxy resin emulsion is not particularly limited as long as it is a resin having at least two epoxy groups in one molecule. For example, it is obtained by reacting a polyhydric alcohol or polyhydric phenol with a halohydrin. Specific examples include bisphenol A type epoxy resin, halogenated bisphenol A type epoxy resin, novolac type epoxy resin, polyglycol type epoxy resin, bisphenol F type epoxy resin, epoxidized oil, 1,6-hexane Examples include diol diglycidyl ether and neopentyl glycol diglycidyl ether. Among these, bisphenol A type epoxy resin and bisphenol F type epoxy resin are preferable from the viewpoints of mechanical durability and corrosion resistance of the coating film, adhesion to the surface to be coated (for example, the surface of the substrate), and the like. In addition, these epoxy resins may be used independently and may be used in combination of 2 or more type.
また、上記エポキシ樹脂は、１分子中に少なくとも２個のエポキシ基を有する樹脂であり、形成される塗膜の常温における仕上がり性、硬化性、及び防食性等の観点から、通常、エポキシ当量は１００〜１，０００ｇ／ｅｑが好ましく、１６０〜９８０ｇ／ｅｑがより好ましく、１６０〜５５０ｇ／ｅｑが更に好ましい。エポキシ当量が１００ｇ／ｅｑ未満では、十分な塗膜物性が得られないおそれがあり、一方でエポキシ当量が１，０００ｇ／ｅｑより大きい場合には、常温でのレベリング性が低下し、均一な塗膜が得られないおそれがある。 In addition, the epoxy resin is a resin having at least two epoxy groups in one molecule, and from the viewpoints of finish property, curability, corrosion resistance, etc. of the formed coating film, the epoxy equivalent is usually 100-1,000 g / eq is preferable, 160-980 g / eq is more preferable, and 160-550 g / eq is still more preferable. If the epoxy equivalent is less than 100 g / eq, sufficient film properties may not be obtained. On the other hand, if the epoxy equivalent is greater than 1,000 g / eq, the leveling property at normal temperature is lowered and uniform coating is not possible. A film may not be obtained.
上記エポキシ樹脂エマルジョンは、特に制限されないが、通常の強制乳化方式（乳化剤及び高速攪拌機等を使用する方式）によって、水等の水性媒体中でエポキシ樹脂を乳化させることにより調製される。ここで、乳化剤としては、例えば、ポリオキシエチレンアルキルフェノールエーテル系ノニオン界面活性剤、ポリオキシエチレン・ポリオキシプロピレンブロック共重合体等のポリエーテル類、或いは該ノニオン界面活性剤及び該ポリエーテル類の少なくとも一方とジイソシアネート化合物との付加物等が挙げられる。なお、これら乳化剤は、１種単独でも、２種以上のブレンドとして用いてもよい。また、エポキシ樹脂エマルジョンの市販品としては、例えば、エポルジョンＥＡ１、２、３、７、１２、２０、５５及びＨＤ２（日本ＮＳＣ社製、商品名）；アクアトート２０５、５１０、３５２０、３５４０、３５２０１、５００３、及び５５２０（東都レジン化工社製、商品名）；ユカレジンＫＥ−００２、ＫＥ−１１６、Ｅ−１０２２、ＫＥ−３０１Ｃ（吉村油化学社製、商品名）；及びＥＭ−１０１−５０（アデカ社製、商品名）が挙げられる。 The epoxy resin emulsion is not particularly limited, but is prepared by emulsifying the epoxy resin in an aqueous medium such as water by a normal forced emulsification method (a method using an emulsifier and a high-speed stirrer). Here, as the emulsifier, for example, a polyoxyethylene alkylphenol ether-based nonionic surfactant, a polyether such as a polyoxyethylene / polyoxypropylene block copolymer, or at least the nonionic surfactant and the polyether Examples include adducts of one and a diisocyanate compound. These emulsifiers may be used alone or as a blend of two or more. Moreover, as a commercial item of an epoxy resin emulsion, for example, Epourgeon EA1, 2, 3, 7, 12, 20, 55 and HD2 (Nippon NSC company make, brand name); Aquatote 205, 510, 3520, 3540, 35201 , 5003, and 5520 (trade name, manufactured by Toto Resin Chemical Co., Ltd.); Yuka Resin KE-002, KE-116, E-1022, KE-301C (trade name, manufactured by Yoshimura Oil Chemical Co., Ltd.); and EM-101-50 ( Adeka's product name).
上記主剤は、上記エポキシ樹脂エマルジョンの他にも他の配合剤を含有することができる。具体的に、上記主剤は、主剤や水性エポキシ樹脂塗料組成物の粘性を調整するため、増粘剤を含有することができる。上記増粘剤としては、特に制限されず、公知の増粘剤が使用できるが、具体例としては、ケイ酸塩、金属ケイ酸塩、モンモリロナイト、有機モンモリロナイト、コロイド状アルミナ等の無機系増粘剤；ポリアクリル酸ソーダ、ポリアクリル酸−（メタ）アクリル酸エステル共重合体等のポリアクリル酸系増粘剤；「ＵＨ−８１４Ｎ」、「ＵＨ−４６２」、「ＵＨ−４２０」、「ＵＨ−４７２」、「ＵＨ−５４０」（以上、アデカ社製）、「ＳＮシックナー６１２」、「ＳＮシックナー６２１Ｎ」、「ＳＮシックナー６２５Ｎ」、「ＳＮシックナー６２７Ｎ」（以上、サンノプコ社製）等のウレタン会合型増粘剤；カルボキシメチルセルロース、メチルセルロース、ヒドロキシエチルセルロース等の繊維素誘導体系増粘剤；カゼイン、カゼイン酸ソーダ、カゼイン酸アンモニウム等のタンパク質系増粘剤；アルギン酸ソーダ等のアルギン酸系増粘剤；ポリビニルアルコール、ポリビニルピロリドン、ポリビニルベンジルエーテル共重合体等のポリビニル系増粘剤；プルロニックポリエーテル、ポリエーテルジアルキルエステル、ポリエーテルジアルキルエーテル、ポリエーテルエポキシ変性物等のポリエーテル系増粘剤；ビニルメチルエーテル−無水マレイン酸共重合体の部分エステル等の無水マレイン酸共重合体系増粘剤；ポリアミドアミン塩等のポリアミド系増粘剤等が挙げられる。これら増粘剤は、単独で用いてもよく、二種以上を組み合わせて用いてもよい。 The main agent can contain other compounding agents in addition to the epoxy resin emulsion. Specifically, the main agent can contain a thickener in order to adjust the viscosity of the main agent and the aqueous epoxy resin coating composition. The thickener is not particularly limited, and known thickeners can be used. Specific examples include inorganic thickeners such as silicate, metal silicate, montmorillonite, organic montmorillonite, colloidal alumina, and the like. Agents; polyacrylic acid thickeners such as polyacrylic acid soda and polyacrylic acid- (meth) acrylic acid ester copolymers; "UH-814N", "UH-462", "UH-420", "UH -472 "," UH-540 "(above, manufactured by Adeka)," SN thickener 612 "," SN thickener 621N "," SN thickener 625N "," SN thickener 627N "(above, manufactured by San Nopco) Associative thickeners; Fibrin derivative thickeners such as carboxymethylcellulose, methylcellulose, and hydroxyethylcellulose; casein, casein Protein thickeners such as soda and ammonium caseinate; Alginic acid thickeners such as sodium alginate; Polyvinyl thickeners such as polyvinyl alcohol, polyvinylpyrrolidone and polyvinylbenzyl ether copolymers; Pluronic polyethers and polyether dialkyls Polyether thickeners such as esters, polyether dialkyl ethers and polyether epoxy modified products; Maleic anhydride copolymer thickeners such as partial esters of vinyl methyl ether-maleic anhydride copolymer; Polyamidoamine salts, etc. And polyamide thickeners. These thickeners may be used alone or in combination of two or more.
また、上記主剤は、ｐＨ調整剤を含有してもよい。ｐＨ調整剤は、塗料に一般的に使用されるものであれば使用でき、以前より中和剤として公知の各種含窒素塩基性化合物、無機酸、有機酸等が特に制限なく利用できる。具体的には、例えば、各種含窒素塩基性化合物として、トリメチルアミン、トリエチルアミン、トリブチルアミン等のアルキルアミン類、トリエタノールアミン、ジメチルエタノールアミン、ジエタノールアミン、モノエタノールアミン、Ｎ−メチルジエタノールアミン、Ｎ，Ｎ−ジメチルエタノールアミン、エチルプロパノールアミン等のアルコールアミン類、モルホリン、アンモニア等の揮発性含窒素塩基性化合物が挙げられる。また無機酸としては、塩酸、硫酸、硝酸等が挙げられ、有機酸としては、蟻酸、酢酸等が挙げられる。これらｐＨ調整剤は、単独で用いてもよく、二種以上を組み合わせて用いてもよい。 The main agent may contain a pH adjuster. The pH adjuster can be used as long as it is generally used in paints, and various nitrogen-containing basic compounds, inorganic acids, organic acids and the like that have been known as neutralizers can be used without any particular limitation. Specifically, for example, as various nitrogen-containing basic compounds, alkylamines such as trimethylamine, triethylamine and tributylamine, triethanolamine, dimethylethanolamine, diethanolamine, monoethanolamine, N-methyldiethanolamine, N, N- Examples thereof include alcohol amines such as dimethylethanolamine and ethylpropanolamine, and volatile nitrogen-containing basic compounds such as morpholine and ammonia. Examples of inorganic acids include hydrochloric acid, sulfuric acid, and nitric acid, and examples of organic acids include formic acid and acetic acid. These pH adjusters may be used alone or in combination of two or more.
更に、上記主剤は、塗膜の可撓性を向上させる目的として、反応性希釈剤や非反応性希釈剤等の一般的に使用される希釈剤を含有してもよい。反応性希釈剤としては、例えば、カージュラＥ１０（油化シェルエポキシ社製、商品名）、ネオトートＳ（東都化成社製、商品名）、及びアデカグリシロールＥＤ５０２（旭電化工業社製、商品名）等の１官能性エポキシ樹脂が挙げられる。一方、非反応性希釈剤としては、例えば、ニカノールＬＬＬ等の石油樹脂及びクマロン樹脂等が挙げられる。これら希釈剤は、単独で用いてもよく、二種以上を組み合わせて用いてもよい。 Furthermore, the main agent may contain a commonly used diluent such as a reactive diluent or a non-reactive diluent for the purpose of improving the flexibility of the coating film. Examples of reactive diluents include Cardura E10 (trade name, manufactured by Yuka Shell Epoxy Co., Ltd.), Neotote S (trade name, manufactured by Toto Kasei Co., Ltd.), and Adeka Glycilol ED502 (trade name, manufactured by Asahi Denka Kogyo Co., Ltd.). Monofunctional epoxy resins such as On the other hand, examples of the non-reactive diluent include petroleum resins such as Nicanol LLL and coumarone resins. These diluents may be used alone or in combination of two or more.
また更に、上記主剤は、その他塗料に一般的に使用される着色顔料、防錆顔料及び体質顔料等を特に制限無く含有することができる。着色顔料、防錆顔料及び体質顔料の具体例としては、酸化チタン、ベンガラ、黄色酸化鉄、カーボンブラック、トリポリリン酸アルミニウム、リン酸亜鉛、メタホウ酸バリウム、炭酸カルシウム、硫酸バリウム、タルク、クレー、マイカ、アルミナ、ミョウバン、白土、水酸化マグネシウム、及び酸化マグネシウム等の無機顔料や、フタロシアニンブルー、フタロシアニングリーン、ナフトールレッド、キナクリドンレッド、ベンズイミダゾロンイエロー、ハンザイエロー、ベンズイミダゾロンオレンジ、及びジオキサジンバイオレット等の有機顔料が挙げられる。これら顔料は、単独で用いてもよく、二種以上を組み合わせて用いてもよい。 Furthermore, the main agent can contain other coloring pigments, rust preventive pigments, extender pigments, and the like that are generally used in other paints. Specific examples of color pigments, rust preventive pigments and extender pigments include titanium oxide, bengara, yellow iron oxide, carbon black, aluminum tripolyphosphate, zinc phosphate, barium metaborate, calcium carbonate, barium sulfate, talc, clay, mica , Inorganic pigments such as alumina, alum, clay, magnesium hydroxide, and magnesium oxide, phthalocyanine blue, phthalocyanine green, naphthol red, quinacridone red, benzimidazolone yellow, hansa yellow, benzimidazolone orange, and dioxazine violet And organic pigments. These pigments may be used alone or in combination of two or more.
更にまた、上記主剤には、水性エポキシ樹脂塗料組成物に各種機能を付与するため、分散剤、消泡剤、沈降防止剤、防カビ剤、防腐剤、紫外線吸収剤、又は光安定剤等が適宜添加されてもよい。また、エポキシ樹脂エマルジョンを構成するエポキシ樹脂とアミン樹脂エマルジョンを構成するポリアミン樹脂との融着を促進するため、上記主剤には、有機溶剤を配合することも可能である。有機溶剤としては、例えば、エチレングリコールモノｎ−ブチルエーテル、エチレングリコールモノｉ−ブチルエーテル、エチレングリコールモノｎ−プロピルエーテル、エチレングリコールモノｉ−プロピルエーテル、ジエチレングリコールモノｎ−ブチルエーテル、ジエチレングリコールモノｉ−ブチルエーテル、ジエチレングリコールモノｎ−プロピルエーテル、ジエチレングリコールモノｉ−プロピルエーテル、ジプロピレングリコールモノｎ−ブチルエーテル、ジプロピレングリコールモノｉ−ブチルエーテル、ジプロピレングリコールモノｎ−プロピルエーテル、ジプロピレングリコールモノｉ−プロピルエーテル、ジエチレングリコールジエチルエーテル、及びジエチレングリコールジブチルエーテル等のグリコールエーテル類、２，２，４−トリメチルペンタンジオールモノイソブチレート、及び２，２，４−トリメチルペンタンジオールジイソブチレート等が挙げられる。これら有機溶剤は、単独で用いてもよく、二種以上を組み合わせて用いてもよい。 Furthermore, the main agent includes a dispersant, an antifoaming agent, an anti-settling agent, an antifungal agent, an antiseptic, an ultraviolet absorber, a light stabilizer, and the like in order to impart various functions to the aqueous epoxy resin coating composition. You may add suitably. Further, in order to promote fusion between the epoxy resin constituting the epoxy resin emulsion and the polyamine resin constituting the amine resin emulsion, an organic solvent can be blended with the main agent. Examples of the organic solvent include ethylene glycol mono n-butyl ether, ethylene glycol mono i-butyl ether, ethylene glycol mono n-propyl ether, ethylene glycol mono i-propyl ether, diethylene glycol mono n-butyl ether, diethylene glycol mono i-butyl ether, diethylene glycol. Mono n-propyl ether, diethylene glycol mono i-propyl ether, dipropylene glycol mono n-butyl ether, dipropylene glycol mono i-butyl ether, dipropylene glycol mono n-propyl ether, dipropylene glycol mono i-propyl ether, diethylene glycol diethyl ether And glycol ethers such as diethylene glycol dibutyl ether , 2,2,4-trimethyl pentanediol mono-isobutyrate, and 2,2,4-trimethyl pentanediol diisobutyrate and the like. These organic solvents may be used alone or in combination of two or more.
なお、上記主剤は、上記エポキシ樹脂エマルジョンと、必要に応じて適宜選択される各種成分とを混合することにより調製できる。 In addition, the said main ingredient can be prepared by mixing the said epoxy resin emulsion and the various components suitably selected as needed.
＜アミン樹脂エマルジョンを含む硬化剤＞
本発明の水性エポキシ樹脂塗料組成物は、硬化剤として、アミン樹脂エマルジョンを含む硬化剤を含むことを要する。ここで、アミン樹脂エマルジョンとは、アミン樹脂が水等の水性媒体中で分散してなる乳濁液を意味し、本発明におけるアミン樹脂とは、１分子中に２個以上のアミノ基を含有するポリアミン樹脂を指す。上記ポリアミン樹脂としては、例えば、エチレンジアミン、トリメチレンジアミン、テトラメチレンジアミン、ペンタメチレンジアミン、トリアミノプロパン、ジエチレントリアミン、トリエチレンテトラミン、テトラエチレンペンタミン、イソホロンジアミン、及び１，３−ビスアミノメチルシクロヘキサン等の脂肪族ポリアミン；フェニレンジアミン、メタキシリレンジアミン、パラキシリレンジアミン、及びジアミノジフエニルメタン等の芳香族ポリアミン；ポリオキシエチレンジアミン、ポリオキシプロピレンジアミン、トリエチレングリコールジアミン、及びトリプロピレングリコールジアミン等の他のポリアミン化合物と、これらポリアミン樹脂のアミノ基を変性してなる変性ポリアミン樹脂とが挙げられる。なお、上記ポリアミン樹脂の変性には、既知の方法が利用でき、変性反応の例としては、アミノ基のアミド化、アミノ基とカルボニル化合物のマンニッヒ反応、アミノ基とエポキシ基の付加反応等が挙げられる。ここで、アミノ基にエポキシ基等が付加したタイプの変性ポリアミン樹脂をアダクトタイプの変性ポリアミン樹脂といい、防食性の観点から、アミノ基にエポキシ基が付加したエポキシアダクトタイプの変性ポリアミン樹脂が好ましい。
<Curing agent containing amine resin emulsion>
The aqueous epoxy resin coating composition of the present invention needs to contain a curing agent containing an amine resin emulsion as a curing agent. Here, the amine resin emulsion means an emulsion in which the amine resin is dispersed in an aqueous medium such as water, and the amine resin in the present invention contains two or more amino groups in one molecule. Refers to polyamine resin. Examples of the polyamine resin include ethylenediamine, trimethylenediamine, tetramethylenediamine, pentamethylenediamine, triaminopropane, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, isophoronediamine, and 1,3-bisaminomethylcyclohexane. Aliphatic polyamines; aromatic polyamines such as phenylenediamine, metaxylylenediamine, paraxylylenediamine, and diaminodiphenylmethane; such as polyoxyethylenediamine, polyoxypropylenediamine, triethyleneglycoldiamine, and tripropyleneglycoldiamine Examples include other polyamine compounds and modified polyamine resins obtained by modifying the amino groups of these polyamine resins. For modification of the polyamine resin, known methods can be used. Examples of the modification reaction include amidation of an amino group, Mannich reaction of an amino group and a carbonyl compound, addition reaction of an amino group and an epoxy group, and the like. It is done. Here, a modified polyamine resin in which an epoxy group or the like is added to an amino group is referred to as an adduct type modified polyamine resin, and an epoxy adduct type modified polyamine resin in which an epoxy group is added to an amino group is preferable from the viewpoint of corrosion resistance. .
本発明の水性エポキシ樹脂塗料組成物において、アミン樹脂エマルジョンを含む硬化剤の配合割合は、塗膜の硬化性及び防食性等の観点から、主剤中に含まれるエポキシ樹脂エマルジョンを構成するエポキシ樹脂のエポキシ基１当量に対して、アミン樹脂エマルジョンを構成するアミン樹脂の活性水素が、通常０．５〜２．０当量の範囲内であり、特に０．６〜１．２当量の範囲内であるのが好ましい。 In the aqueous epoxy resin coating composition of the present invention, the blending ratio of the curing agent containing the amine resin emulsion is that of the epoxy resin constituting the epoxy resin emulsion contained in the main agent from the viewpoint of the curability of the coating film and the corrosion resistance. The active hydrogen of the amine resin constituting the amine resin emulsion is usually in the range of 0.5 to 2.0 equivalents, particularly in the range of 0.6 to 1.2 equivalents per 1 equivalent of epoxy group. Is preferred.
また、上記アミン樹脂エマルジョンを含む硬化剤には、主剤にも配合できる配合剤、例えば反応性希釈剤、非反応性希釈剤、着色顔料、体質顔料、有機顔料、増粘剤、ｐＨ調整剤、分散剤、消泡剤、沈降防止剤、防カビ剤、防腐剤、紫外線吸収剤、光安定剤、有機溶剤等を必要に応じて配合してもよい。 In addition, the curing agent containing the amine resin emulsion includes a compounding agent that can be incorporated into the main agent, for example, a reactive diluent, a non-reactive diluent, a color pigment, an extender pigment, an organic pigment, a thickener, a pH adjuster, You may mix | blend a dispersing agent, an antifoamer, an antisettling agent, an antifungal agent, an antiseptic | preservative, a ultraviolet absorber, a light stabilizer, an organic solvent, etc. as needed.
なお、上記アミン樹脂エマルジョンを含む硬化剤は、上記アミン樹脂エマルジョンと、必要に応じて適宜選択される各種成分とを混合することにより調製できる。 In addition, the hardening | curing agent containing the said amine resin emulsion can be prepared by mixing the said amine resin emulsion and the various components suitably selected as needed.
＜水性エポキシ樹脂塗料組成物の調製＞
本発明の水性エポキシ樹脂塗料組成物は、上記主剤と、上記アミン樹脂エマルジョンを含む硬化剤とを、例えば、これらの成分を均一に混合できる装置、好ましくは電動攪拌機等を用いて、均一に混合することにより調製できる。また、本発明の水性エポキシ樹脂塗料組成物の粘度を調整するため、上記主剤と、上記アミン樹脂エマルジョンを含む硬化剤とを混合した後に、水を加えてもよい。
<Preparation of aqueous epoxy resin coating composition>
The aqueous epoxy resin coating composition of the present invention is mixed uniformly with the main agent and the curing agent containing the amine resin emulsion, for example, using an apparatus capable of uniformly mixing these components, preferably an electric stirrer. Can be prepared. Moreover, in order to adjust the viscosity of the aqueous epoxy resin coating composition of the present invention, water may be added after mixing the main agent and the curing agent containing the amine resin emulsion.
＜防食塗装方法＞
次に、本発明の防食塗装方法について詳細に説明する。本発明の第一の防食塗装方法は、上述の水性エポキシ樹脂塗料組成物を被塗装面上に塗装することを特徴とし、また、本発明の第二の防食塗装方法は、上述の水性エポキシ樹脂塗料組成物を被塗装面上に塗装することによって、該被塗装面上に塗膜を形成し、更に、該塗膜上に、該水性エポキシ樹脂塗料組成物以外の水性塗料を塗装することを特徴とする。本発明の第一及び第二の防食塗装方法によれば、上述の水性エポキシ樹脂塗料組成物を用いて塗膜を形成しているため、作業性及び防食性に優れる。
<Anti-corrosion painting method>
Next, the anticorrosion coating method of the present invention will be described in detail. The first anticorrosion coating method of the present invention is characterized in that the above-mentioned aqueous epoxy resin coating composition is coated on a surface to be coated, and the second anticorrosion coating method of the present invention is the above-mentioned aqueous epoxy resin. Forming a coating film on the surface to be coated by coating the coating composition on the surface to be coated, and further coating an aqueous paint other than the aqueous epoxy resin coating composition on the coating film; Features. According to the first and second anticorrosion coating methods of the present invention, since the coating film is formed using the above-described aqueous epoxy resin coating composition, it is excellent in workability and anticorrosion properties.
本発明の第一及び第二の防食塗装方法において、上記水性エポキシ樹脂塗料組成物を乾燥した後に形成される塗膜の膜厚（乾燥膜厚）は、通常２０〜２５０μｍの範囲内であり、３０〜１５０μｍの範囲内であるのが好ましい。また、上記水性エポキシ樹脂塗料組成物の塗装方法としては、特に制限されず、既知の塗装手段、例えば、エアスプレー塗装、エアレススプレー塗装、刷毛塗り、又はローラー塗り等が利用できる。なお、塗装環境は、特に制限されるものではないが、０℃以下のような極端な低温環境や被塗装表面の温度が８０℃以上のような高温環境は避けることが望ましい。水性エポキシ樹脂塗料組成物の乾燥時間は、気温や湿度等の養生環境条件によって異なる。例えば、気温２３℃、相対湿度５０％の条件であれば７日間程度の乾燥時間が望ましいが、積層塗膜を形成するために次工程の塗料組成物を塗り重ねる場合には、支障なく塗り重ねることができる。なお、形成された積層塗膜が、本来の性能を発揮できるのであれば、これに限定されない。 In the first and second anticorrosion coating methods of the present invention, the film thickness (dry film thickness) of the coating film formed after drying the aqueous epoxy resin coating composition is usually in the range of 20 to 250 μm, It is preferably within the range of 30 to 150 μm. Moreover, it does not restrict | limit especially as a coating method of the said water-based epoxy resin coating composition, A well-known coating means, for example, air spray coating, airless spray coating, brush coating, or roller coating, etc. can be utilized. The coating environment is not particularly limited, but it is desirable to avoid an extremely low temperature environment such as 0 ° C. or lower or a high temperature environment where the temperature of the surface to be coated is 80 ° C. or higher. The drying time of the aqueous epoxy resin coating composition varies depending on the curing environment conditions such as air temperature and humidity. For example, if the temperature is 23 ° C. and the relative humidity is 50%, a drying time of about 7 days is desirable. However, when the coating composition of the next step is applied repeatedly to form a laminated coating film, the coating is applied without any problem. be able to. In addition, if the formed laminated coating film can exhibit original performance, it will not be limited to this.
本発明の第一及び第二の防食塗装方法において、被塗装面としては、防食性の付与が必要な表面であれば特に制限されるものではないが、橋梁やプラント等の構造物の表面、より具体的には、鉄道橋、道路橋、ガスタンク、石油タンク、鉄塔等の炭素鋼等の材料からなる基材表面が挙げられる。 In the first and second anticorrosion coating methods of the present invention, the surface to be coated is not particularly limited as long as it is a surface that needs to be imparted with anticorrosive properties, but the surface of a structure such as a bridge or a plant, More specifically, the base material surface which consists of materials, such as a railroad bridge, a road bridge, a gas tank, an oil tank, and carbon steel, such as a steel tower, is mentioned.
本発明の第一及び第二の防食塗装方法においては、上記水性エポキシ樹脂塗料組成物を被塗装面上に直接塗装してもよいし、被塗装面にジンクリッチペイント処理、亜鉛メッキ処理、金属溶射等を施し、ある程度の防食性がある下地を準備してから、該下地の上に塗装してもよい。更に、経年した塗膜（旧塗膜）の状態が健全である場合には、その上に塗装することも可能である。 In the first and second anticorrosion coating methods of the present invention, the water-based epoxy resin coating composition may be directly coated on the surface to be coated, or zinc rich paint treatment, galvanization treatment, metal on the surface to be coated After applying thermal spraying or the like to prepare a base having a certain degree of anticorrosion, the base may be coated. Furthermore, when the state of the aged coating film (old coating film) is healthy, it is possible to paint on it.
本発明の第一及び第二の防食塗装方法においては、必要とされる防食性能に応じて、上記水性エポキシ樹脂塗料組成物を複数回塗り重ねることも可能である。 In the first and second anticorrosion coating methods of the present invention, the water-based epoxy resin coating composition can be applied a plurality of times depending on the required anticorrosion performance.
本発明の第二の防食塗装方法によれば、上記水性エポキシ樹脂塗料組成物による塗膜上に、該水性エポキシ樹脂塗料組成物以外の水性塗料を塗装することを要するが、例えば、該水性塗料として、耐候性に優れる上塗り塗料を使用することにより、防食性を長期に亘って維持することができる。また、上記水性エポキシ樹脂塗料組成物以外の水性塗料には、種々の水性塗料を使用でき、該水性塗料の種類を変更しながら塗り重ねることも可能である。例えば、上述の上塗り塗料を塗装する前に、上記水性エポキシ樹脂塗料組成物による塗膜上に、中塗り塗料を塗装することも可能である。中塗り塗料としては、例えば、エポキシ樹脂系中塗り塗料、変性エポキシ樹脂系中塗り塗料、及びウレタン樹脂系中塗り塗料等が挙げられる。また、上塗り塗料としては、例えば、アクリル樹脂系上塗り塗料、ウレタン樹脂系上塗り塗料、シリコーン樹脂系上塗り塗料、及びフッ素樹脂系上塗り塗料等が挙げられる。 According to the second anticorrosion coating method of the present invention, it is necessary to apply a water-based paint other than the water-based epoxy resin paint composition onto the coating film made of the water-based epoxy resin paint composition. As above, by using a top coating having excellent weather resistance, corrosion resistance can be maintained over a long period of time. Moreover, various water-based paints can be used for water-based paints other than the above-mentioned water-based epoxy resin paint composition, and it is also possible to reapply while changing the type of the water-based paint. For example, before applying the above-mentioned top coat, it is also possible to apply the intermediate coat on the coating film made of the above-mentioned aqueous epoxy resin paint composition. Examples of the intermediate coating include an epoxy resin-based intermediate coating, a modified epoxy resin-based intermediate coating, and a urethane resin-based intermediate coating. Further, examples of the top coating include acrylic resin-based top coating, urethane resin-based top coating, silicone resin-based top coating, and fluororesin-based top coating.
以下、実施例及び比較例を挙げて本発明を更に具体的に説明するが、本発明はこれら実施例のみに限定されるものではない。なお、下記例中、「部」及び「％」は、それぞれ「質量部」及び「質量％」を意味する。 EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated further more concretely, this invention is not limited only to these Examples. In the following examples, “parts” and “%” mean “parts by mass” and “% by mass”, respectively.
＜製造例１＞
混合機に、イオン交換水を１１部投入し、これに分散剤１部、消泡剤０．３部、酸化チタン１０部、トリポリリン酸アルミニウム７部、沈降性硫酸バリウム２０部、及びカオリンクレー８部を撹拌環境下で除々に投入し、投入完了後、粒度が５０μｍ以下になるまで混合した。次いで、混合機に、エポキシ樹脂エマルジョン４０部、及びエチレングリコールモノｎ−ブチルエーテル４部を撹拌環境下で徐々に投入し、１０分間撹拌を行い、主剤１を調製した。
<Production Example 1>
11 parts of ion-exchanged water is added to the mixer, and 1 part of the dispersant, 0.3 part of the antifoaming agent, 10 parts of titanium oxide, 7 parts of aluminum tripolyphosphate, 20 parts of precipitated barium sulfate, and kaolin clay 8 Portions were gradually added under a stirring environment, and after completion of the addition, mixing was performed until the particle size became 50 μm or less. Next, 40 parts of the epoxy resin emulsion and 4 parts of ethylene glycol mono-n-butyl ether were gradually added to the mixer in a stirring environment, followed by stirring for 10 minutes to prepare the main agent 1.
＜製造例２＞
混合機に、アミン樹脂エマルジョンを６２部投入し、これにイオン交換水３８部を撹拌環境下で徐々に投入し、１０分間撹拌を行い、硬化剤２を調製した。
<Production Example 2>
62 parts of the amine resin emulsion was added to the mixer, and 38 parts of ion-exchanged water was gradually added to the mixer in a stirring environment, followed by stirring for 10 minutes to prepare the curing agent 2.
＜主剤１〜６及び硬化剤１〜２＞
以下の表１及び表２には、主剤１〜６の配合処方及び硬化剤１〜２の配合処方を示す。なお、主剤２〜６は、表１に示す処方に従って配合剤を配合し、必要に応じて２５％アンモニア水又は１Ｎ塩酸を用いてｐＨの調製を行った以外は、上記主剤１の製造例１と同様にして、調製された。
<Main agents 1-6 and curing agents 1-2>
Tables 1 and 2 below show the formulation of main ingredients 1-6 and the formulation of curing agents 1-2. The main agents 2 to 6 were prepared according to the prescription shown in Table 1, except that the pH was adjusted using 25% ammonia water or 1N hydrochloric acid as necessary, as described in Production Example 1 of the above main agent 1. And was prepared in the same manner as above.
＜実施例１〜８及び比較例１〜２＞
以下の表３〜４に示す配合処方の水性エポキシ樹脂塗料組成物を調製し、該水性エポキシ樹脂塗料組成物のｐＨ、粘度、たるみ性、作業性及び防食性を測定及び評価した。結果を表３〜４に示す。
<Examples 1-8 and Comparative Examples 1-2>
The water-based epoxy resin coating composition of the mixing | blending prescription shown to the following Tables 3-4 was prepared, and pH, a viscosity, sagging property, workability | operativity, and corrosion resistance of this water-based epoxy resin coating composition were measured and evaluated. The results are shown in Tables 3-4.
＜参考例１＞
参考例として、市販の有機溶剤系エポキシ樹脂塗料のエポニックス＃３０下塗（大日本塗料社製）を使用した。
<Reference Example 1>
As a reference example, a commercially available organic solvent-based epoxy resin paint, Eponics # 30 undercoat (Dainippon Paint Co., Ltd.) was used.
＜ｐＨ測定＞
主剤及び水性エポキシ樹脂塗料組成物のｐＨをホリバ社製ｐＨ ＭＥＴＥＲ Ｄ−５２を用いて測定した。
<PH measurement>
The pH of the main agent and the aqueous epoxy resin coating composition was measured using pH METER D-52 manufactured by Horiba.
＜粘度測定＞
２３℃における水性エポキシ樹脂塗料組成物について、ＴＡインスツルメンツ社製レオメーターＡＲＥＳを用い、ずり速度０．１（１／ｓ）における粘度及びずり速度１０００（１／ｓ）における粘度を測定した。
<Viscosity measurement>
With respect to the aqueous epoxy resin coating composition at 23 ° C., the viscosity at a shear rate of 0.1 (1 / s) and the viscosity at a shear rate of 1000 (1 / s) were measured using a rheometer ARES manufactured by TA Instruments.
＜たるみ性＞
垂直面に設置したブリキ板に、刷毛塗りにて、理論乾燥膜厚が６０μｍとなるように、水性エポキシ樹脂塗料組成物又は有機溶剤系エポキシ樹脂塗料を塗装し、形成される塗膜のたるみ性を下記の基準に従って評価した。なお、乾燥膜厚は、サンコウ電子研究所社製 電磁膜厚計ＳＭ−１０００を用いて測定された。
○：塗付面を１０点測定したときの最低乾燥膜厚が４８μｍ以上。
×：塗付面を１０点測定したときの最低乾燥膜厚が４８μｍ未満。
<Looseness>
A tin plate placed on a vertical surface is coated with a water-based epoxy resin paint composition or an organic solvent-based epoxy resin paint so that the theoretical dry film thickness is 60 μm by brushing. Was evaluated according to the following criteria. The dry film thickness was measured using an electromagnetic film thickness meter SM-1000 manufactured by Sanko Electronics Laboratory.
○: The minimum dry film thickness when the coated surface is measured at 10 points is 48 μm or more.
X: The minimum dry film thickness when the coated surface was measured at 10 points was less than 48 μm.
＜塗装作業性＞
ブリキ板に、刷毛塗り及びローラー塗りにて、水性エポキシ樹脂塗料組成物又は有機溶剤系エポキシ樹脂塗料を塗装し、塗装作業性を下記の基準に従って評価した。
○：塗料組成物が均一に広がり、塗付面の仕上がりがよい。
×：塗料組成物が均一に広がらず、塗付面の仕上がりが悪い。
<Coating workability>
A water-based epoxy resin coating composition or an organic solvent-based epoxy resin coating was applied to the tinplate by brush coating or roller coating, and the coating workability was evaluated according to the following criteria.
○: The coating composition spreads uniformly and the finish of the coated surface is good.
X: The coating composition does not spread uniformly and the finish of the coated surface is poor.
＜防食性＞
試験板として、素地調整程度がＩＳＯ ８５０１−１ Ｓａ２．５のグリッドブラスト処理鋼板（１５０×７０×３．２ｍｍ）を用い、該試験板の両面に、エアスプレーを用いて、乾燥膜厚が５５〜６５μｍになるように、水性エポキシ樹脂塗料組成物又は有機溶剤系エポキシ樹脂塗料を塗装し、２３℃、５０％相対湿度の条件にて７日間乾燥させ、試験片を作製した。該試験片をＪＩＳ Ｋ５６００−７−９に準じて、付属書１のサイクルＤの試験条件で、１２０サイクル曝した後の試験片に生じたサビ、フクレの発生程度を下記の基準に従って評価した。
◎：カット部から２ｍｍ以上離れた試験片表面にサビ、フクレ等の異常が無い。
○：カット部から４ｍｍ以上離れた試験片表面にサビ、フクレ等の異常が無い。
×：カット部から４ｍｍ以上離れた試験片表面にサビ、フクレが発生。
<Anti-corrosion>
As a test plate, a grid-blasted steel plate (150 × 70 × 3.2 mm) having a base adjustment degree of ISO 8501-1 Sa2.5 is used, and air spray is used on both surfaces of the test plate, and a dry film thickness is 55. A water-based epoxy resin coating composition or an organic solvent-based epoxy resin coating was applied so as to be ˜65 μm, and dried for 7 days under the conditions of 23 ° C. and 50% relative humidity to prepare a test piece. In accordance with JIS K5600-7-9, the degree of rust and swelling generated on the test piece after 120 cycles of the test piece under the cycle D test conditions of Appendix 1 was evaluated according to the following criteria.
A: There is no abnormality such as rust or swelling on the surface of the test piece 2 mm or more away from the cut part.
○: There is no abnormality such as rust and swelling on the surface of the test piece 4 mm or more away from the cut part.
X: Rust and swelling occur on the surface of the test piece 4 mm or more away from the cut part.
（注１）Ｄｉｓｐｅｒｂｙｋ−１９０（ビックケミー・ジャパン社製）
（注２）ＢＹＫ−０９３（ビックケミー・ジャパン社製）
（注３）エポルジョンＥＡ５５（日本ＮＳＣ；樹脂固形分５５％、エポキシ当量４９５ｇ／ｅｑ）
（注４）フジキュアーＦＸＳ−９１８−ＦＡ（Ｔ＆Ｋ ＴＯＫＡ社製；エポキシアダクトタイプの変性ポリアミン樹脂、樹脂固形分６０％）
（注５）エポルジョンＥＢ−３（日本ＮＳＣ社製；ポリアミドアミン、樹脂固形分７５％）
（注６）主剤中に含まれるエポキシ樹脂エマルジョンを構成するエポキシ樹脂のエポキシ基１当量に対するアミン樹脂エマルジョンを構成するアミン樹脂の活性水素の当量を示す。
(Note 1) Disperbyk-190 (by Big Chemie Japan)
(Note 2) BYK-093 (by Big Chemie Japan)
(Note 3) Epourgeon EA55 (Japan NSC; resin solid content 55%, epoxy equivalent 495 g / eq)
(Note 4) Fuji Cure FXS-918-FA (manufactured by T & K TOKA; epoxy adduct type modified polyamine resin, resin solid content 60%)
(Note 5) Epourgeon EB-3 (manufactured by NSC Japan; polyamidoamine, resin solid content 75%)
(Note 6) Indicates the active hydrogen equivalent of the amine resin constituting the amine resin emulsion with respect to 1 equivalent of the epoxy group of the epoxy resin constituting the epoxy resin emulsion contained in the main agent.
＜実施例１〜６、参考例７〜８及び比較例１〜２＞
以下の表３〜４に示す配合処方の水性エポキシ樹脂塗料組成物を調製し、該水性エポキシ樹脂塗料組成物のｐＨ、粘度、たるみ性、作業性及び防食性を測定及び評価した。結果を表３〜４に示す。
<Examples 1-6, Reference Examples 7-8, and Comparative Examples 1-2>
The water-based epoxy resin coating composition of the mixing | blending prescription shown to the following Tables 3-4 was prepared, and pH, a viscosity, sagging property, workability | operativity, and corrosion resistance of this water-based epoxy resin coating composition were measured and evaluated. The results are shown in Tables 3-4.
Claims (5)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012070092A JP5273752B1 (en) | 2012-03-26 | 2012-03-26 | Water-based epoxy resin coating composition and anticorrosion coating method using the same |
| PCT/JP2013/054770 WO2013140953A1 (en) | 2012-03-23 | 2013-02-25 | Water-based epoxy resin paint composition, anticorrosive painting method, and painted body |
| CN201380011848.8A CN104136559A (en) | 2012-03-23 | 2013-02-25 | Water-based epoxy resin paint composition, anticorrosive painting method, and painted body |
| CN201610515546.XA CN106118363B (en) | 2012-03-23 | 2013-02-25 | Aqueous epoxide resin paint composition, corrosion-proof coating method and coated-body |
| MYPI2014002151A MY166189A (en) | 2012-03-23 | 2013-02-25 | Aqueous anticorrosive coating method and painted body |
| CN201610516111.7A CN106147517A (en) | 2012-03-23 | 2013-02-25 | Aqueous epoxide resin paint compositions, corrosion-proof coating method and coated-body |
| MYPI2017000285A MY179883A (en) | 2012-03-23 | 2013-02-25 | Water-soluble anticorrosive paint composition and corrosion protection method |
| PH12014501710A PH12014501710A1 (en) | 2012-03-23 | 2014-07-28 | Aqueous epoxy resin coating composition, anticorrosive coating method and coated body |
| HK15102751.8A HK1202301A1 (en) | 2012-03-23 | 2015-03-17 | Water-based epoxy resin paint composition. anticorrosive painting method, and painted body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012070092A JP5273752B1 (en) | 2012-03-26 | 2012-03-26 | Water-based epoxy resin coating composition and anticorrosion coating method using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP5273752B1 JP5273752B1 (en) | 2013-08-28 |
| JP2013199621A true JP2013199621A (en) | 2013-10-03 |
Family
ID=49179212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012070092A Active JP5273752B1 (en) | 2012-03-23 | 2012-03-26 | Water-based epoxy resin coating composition and anticorrosion coating method using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5273752B1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104861822A (en) * | 2015-05-05 | 2015-08-26 | 沈阳化工大学 | Preparation method of metal organic framework/ water-borne anti-corrosive coating |
| CN105925131A (en) * | 2016-05-27 | 2016-09-07 | 广西梧州龙鱼漆业有限公司 | Antirust paint |
| JP2016186021A (en) * | 2015-03-27 | 2016-10-27 | 大日本塗料株式会社 | Aqueous epoxy resin coating composition, coated body and method for producing coated body |
| JP2018123227A (en) * | 2017-01-31 | 2018-08-09 | 大日本塗料株式会社 | Two-component reactive curable type aqueous coating material composition for top coating, and multlayer film formation method and coated body using the same |
| JP2019111488A (en) * | 2017-12-22 | 2019-07-11 | 関西ペイント株式会社 | Anticorrosion coating method for rust surface |
| JP2019112626A (en) * | 2017-12-22 | 2019-07-11 | 関西ペイント株式会社 | Aqueous coating composition excellent in anticorrosive property |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5475917B1 (en) * | 2013-09-30 | 2014-04-16 | 大日本塗料株式会社 | Coating composition and coated article using the same |
| CN105176320B (en) * | 2014-06-23 | 2018-05-11 | 中国石油集团工程技术研究院 | The drinking water pipeline inner side anticorrosion coating and manufacture method of a kind of antiscour and drag reduction |
| CN105176300B (en) * | 2015-08-26 | 2018-05-04 | 江苏新宇天成环保设备有限公司 | A kind of incinerator for high-concentration salt-containing wastewater |
| CN105176321B (en) * | 2015-10-08 | 2017-11-21 | 江苏华夏制漆科技有限公司 | A kind of aqueous phenolic aldehyde graphite-epoxy alkene anti-corrosion primer and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004514012A (en) * | 2000-11-09 | 2004-05-13 | ビーエーエスエフ コーティングス アクチェンゲゼルシャフト | Powder clear coat slurry of structural viscosity, free of organic solvent and external emulsifier, process for its production and its use |
| JP2006096809A (en) * | 2004-09-28 | 2006-04-13 | Fuji Photo Film Co Ltd | Organic solvent-based thickening and thixotropy-imparting agent, coating composition, functional film and optical film |
| JP2007182512A (en) * | 2006-01-10 | 2007-07-19 | Sanyo Chem Ind Ltd | Aqueous dispersion slurry coating excellent in coating property |
| JP2008208241A (en) * | 2007-02-27 | 2008-09-11 | Unitika Ltd | Antistatic coating agent and laminated body |
| JP2008247958A (en) * | 2007-03-29 | 2008-10-16 | Dic Corp | Aqueous epoxy resin composition |
| JP2009149791A (en) * | 2007-12-21 | 2009-07-09 | Kansai Paint Co Ltd | Material for two-part aqueous anti-corrosive coating and method for anti-corrosive coating |
| JP2010179592A (en) * | 2009-02-06 | 2010-08-19 | Oji Paper Co Ltd | Method of manufacturing heat-sensitive recording body |
| WO2012033079A1 (en) * | 2010-09-07 | 2012-03-15 | 関西ペイント株式会社 | Copolymer, water-based coating composition containing same, and method for forming multilayered coating film |
-
2012
- 2012-03-26 JP JP2012070092A patent/JP5273752B1/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004514012A (en) * | 2000-11-09 | 2004-05-13 | ビーエーエスエフ コーティングス アクチェンゲゼルシャフト | Powder clear coat slurry of structural viscosity, free of organic solvent and external emulsifier, process for its production and its use |
| JP2006096809A (en) * | 2004-09-28 | 2006-04-13 | Fuji Photo Film Co Ltd | Organic solvent-based thickening and thixotropy-imparting agent, coating composition, functional film and optical film |
| JP2007182512A (en) * | 2006-01-10 | 2007-07-19 | Sanyo Chem Ind Ltd | Aqueous dispersion slurry coating excellent in coating property |
| JP2008208241A (en) * | 2007-02-27 | 2008-09-11 | Unitika Ltd | Antistatic coating agent and laminated body |
| JP2008247958A (en) * | 2007-03-29 | 2008-10-16 | Dic Corp | Aqueous epoxy resin composition |
| JP2009149791A (en) * | 2007-12-21 | 2009-07-09 | Kansai Paint Co Ltd | Material for two-part aqueous anti-corrosive coating and method for anti-corrosive coating |
| JP2010179592A (en) * | 2009-02-06 | 2010-08-19 | Oji Paper Co Ltd | Method of manufacturing heat-sensitive recording body |
| WO2012033079A1 (en) * | 2010-09-07 | 2012-03-15 | 関西ペイント株式会社 | Copolymer, water-based coating composition containing same, and method for forming multilayered coating film |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016186021A (en) * | 2015-03-27 | 2016-10-27 | 大日本塗料株式会社 | Aqueous epoxy resin coating composition, coated body and method for producing coated body |
| CN104861822A (en) * | 2015-05-05 | 2015-08-26 | 沈阳化工大学 | Preparation method of metal organic framework/ water-borne anti-corrosive coating |
| CN105925131A (en) * | 2016-05-27 | 2016-09-07 | 广西梧州龙鱼漆业有限公司 | Antirust paint |
| JP2018123227A (en) * | 2017-01-31 | 2018-08-09 | 大日本塗料株式会社 | Two-component reactive curable type aqueous coating material composition for top coating, and multlayer film formation method and coated body using the same |
| JP7042027B2 (en) | 2017-01-31 | 2022-03-25 | 大日本塗料株式会社 | A two-component reaction-curing water-based paint composition for topcoat paints, and a multi-layer film forming method and coating body using the same. |
| JP2019111488A (en) * | 2017-12-22 | 2019-07-11 | 関西ペイント株式会社 | Anticorrosion coating method for rust surface |
| JP2019112626A (en) * | 2017-12-22 | 2019-07-11 | 関西ペイント株式会社 | Aqueous coating composition excellent in anticorrosive property |
| JP7368938B2 (en) | 2017-12-22 | 2023-10-25 | 関西ペイント株式会社 | Water-based paint composition with excellent corrosion resistance |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5273752B1 (en) | 2013-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5273752B1 (en) | Water-based epoxy resin coating composition and anticorrosion coating method using the same | |
| WO2013140953A1 (en) | Water-based epoxy resin paint composition, anticorrosive painting method, and painted body | |
| JP5296899B1 (en) | Aqueous anticorrosion coating composition and anticorrosion method | |
| JP5587537B2 (en) | Two-component water-based anticorrosion paint and anticorrosion coating method | |
| JP5717229B2 (en) | Anticorrosion coating method using water-based epoxy resin zinc rich paint | |
| JP4160970B2 (en) | Corrosion prevention method for cast iron pipe | |
| JP2016186021A (en) | Aqueous epoxy resin coating composition, coated body and method for producing coated body | |
| JP2006257142A (en) | Two-part curable aqueous coating composition and base material | |
| CN110256938B (en) | Two-component water-based epoxy resin primer | |
| JP2009096922A (en) | Coating composition | |
| AU2015214291B2 (en) | Water-based epoxy formulations for applied fireproofing | |
| JP5246977B1 (en) | Water-based anticorrosion coating method and coated body | |
| EP3131979B1 (en) | Water-based epoxy formulations for applied fireproofing | |
| JP6606112B2 (en) | Film formation method | |
| JP7161335B2 (en) | Coating method of cationic electrodeposition paint | |
| JP2018058917A (en) | Aqueous surface conditioner composition, method for coating steel material using the composition, and coated steel material | |
| JP2022031168A (en) | Anticorrosion paint composition | |
| JP2021042362A (en) | Curing agent and aqueous coating material | |
| JP2018053028A (en) | Two liquid reaction-curable aqueous coating composition for primer, and multilayer film forming method using the same and coated body | |
| JP2017221937A (en) | Coating film formation method | |
| JP6616722B2 (en) | Film forming material | |
| JP6606016B2 (en) | Film formation method | |
| JP2004315652A (en) | Epoxy resin composition and flooring material using the composition | |
| JP2020163358A (en) | Film formation method | |
| JP2020143273A (en) | Anticorrosive coating composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20130509 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20130509 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 5273752 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |