JP2002327151A - Coating composition and method for preventing corrosion of weather resistance steel by using the same - Google Patents
Coating composition and method for preventing corrosion of weather resistance steel by using the sameInfo
- Publication number
- JP2002327151A JP2002327151A JP2001136406A JP2001136406A JP2002327151A JP 2002327151 A JP2002327151 A JP 2002327151A JP 2001136406 A JP2001136406 A JP 2001136406A JP 2001136406 A JP2001136406 A JP 2001136406A JP 2002327151 A JP2002327151 A JP 2002327151A
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- Prior art keywords
- coating composition
- weather
- coating
- steel material
- weather resistance
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、塗料組成物に関
し、更に詳細には、溶接構造用耐候性熱間圧延鋼材およ
び高耐候性鋼材等の耐候性鋼材に塗布することにより、
当該鋼材の耐食性を向上せしめることができるととも
に、当該鋼材で作られる構造物の外観および意匠性を向
上させることのできる塗料組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating composition, and more particularly, to a coating composition which is applied to a weather-resistant steel material such as a weather-resistant hot-rolled steel material for a welded structure and a high weather-resistant steel material.
The present invention relates to a coating composition capable of improving the corrosion resistance of the steel material and improving the appearance and design of a structure made of the steel material.
【０００２】[0002]
【従来の技術】従来より、多くの鋼材が提供されてきた
が、このうち、溶接構造用耐候性熱間圧延鋼材（以下、
「ＳＭＡ材」という）および高耐候性鋼材（以下「ＳＰ
Ａ材」という）は、その耐候性を生かして、橋梁、構造
物、鉄道車両などの様々な分野で使用されてきた。この
ＳＭＡ材やＳＰＡ材は、素地のまま大気中に放置される
と、最初は通常の普通綱と同様に鋼材の表面に赤さびが
形成されるが、その後鋼材の合金元素が作用し、表面に
酸化被膜（安定さび）が形成され、以後の腐食を防止す
るというものである。2. Description of the Related Art Conventionally, many steel materials have been provided. Among them, a weather-resistant hot-rolled steel material for a welded structure (hereinafter, referred to as a steel material).
"SMA material") and high weathering steel (hereinafter referred to as "SP material").
A material) has been used in various fields such as bridges, structures, railway vehicles, etc., taking advantage of its weather resistance. When this SMA or SPA material is left in the air as it is, a red rust is first formed on the surface of the steel material in the same way as a normal ordinary rope. An oxide film (stable rust) is formed to prevent subsequent corrosion.
【０００３】このようにＳＭＡ材やＳＰＡ材は、最初の
赤さびの形成が安定さびの形成と深く関わっており、こ
れが耐候性に関係するため、鋼材でありながら無塗装で
使用（裸使用）されてきた。As described above, in SMA and SPA materials, the formation of the first red rust is deeply related to the formation of the stable rust, and this is related to the weather resistance. Have been.
【０００４】その一方で、裸使用されるＳＭＡ材やＳＰ
Ａ材の表面は、初期に赤さびが形成され、これが風雨に
より流れ落ちるなどして構造物等周辺を汚染することが
あり、外観的には好ましくないものであった。また、結
露頻度が多い部分や風通しが悪いところなどでは表面の
酸化被膜（安定化さび層）が形成されにくく、十分な耐
候性が得られないことがあるなどの問題もあった。[0004] On the other hand, bare SMA materials and SP
On the surface of the material A, red rust was formed at an early stage, and the red rust may flow down due to wind and rain, and contaminate the surroundings of the structure and the like, which was not preferable in appearance. In addition, there is also a problem that an oxide film (stabilized rust layer) on the surface is hardly formed in a portion where dew condensation frequently occurs or where ventilation is poor, and sufficient weather resistance may not be obtained.
【０００５】このような理由から、実用面では問題はな
いものの、構造物の外観という面からは、ＳＭＡ材やＳ
ＰＡ材は使用しにくい面もあり、ＳＭＡ材やＳＰＡ材を
より広い範囲で使用するためには、外観を向上させるた
めの手段の開発が求められていた。[0005] For these reasons, there is no problem in practical use, but from the viewpoint of the appearance of the structure, SMA material or S
PA materials are also difficult to use, and in order to use SMA materials and SPA materials in a wider range, it has been required to develop means for improving the appearance.
【０００６】[0006]
【発明が解決しようとする課題】従って本発明は、ＳＭ
Ａ材やＳＰＡ材に優れた耐候性を維持しながら、ＳＭＡ
やＳＰＡ材を裸使用したときに生じる赤さびの発生を防
ぎ、その外観を向上させることを課題とするものであ
る。Accordingly, the present invention relates to an SM
SMA while maintaining excellent weather resistance to A and SPA materials
It is an object of the present invention to prevent the occurrence of red rust that occurs when a bare or SPA material is used, and to improve the appearance thereof.
【０００７】[0007]
【課題を解決するための手段】本発明者らは上記課題を
解決すべく鋭意研究を行った結果、導電性ポリマーを含
有する塗料組成物をＳＭＡ材やＳＰＡ材の表面に塗布す
ることにより、赤さびの生成工程を経ることなく耐蝕性
に寄与する安定化さび層が早期に形成されることを見出
した。また、この塗料組成物に有色顔料を添加しておけ
ば、ＳＭＡ材やＳＰＡ材ないしこれで作られる構造物の
外観を任意な色とすることができ、その応用範囲を広げ
ることが可能になることを見出し、本発明を完成した。Means for Solving the Problems The inventors of the present invention have made intensive studies to solve the above problems, and as a result, by applying a coating composition containing a conductive polymer to the surface of an SMA material or SPA material, It has been found that a stabilized rust layer that contributes to corrosion resistance is formed early without going through a red rust generation step. Further, if a colored pigment is added to this coating composition, the appearance of the SMA material or SPA material or the structure made therefrom can be made any color, and the range of application can be expanded. Thus, the present invention has been completed.
【０００８】すなわち本発明は、導電性ポリマー粒子、
塗膜形成成分、有色顔料および溶剤成分を含有する塗料
組成物を提供するものである。That is, the present invention provides conductive polymer particles,
An object of the present invention is to provide a coating composition containing a coating film forming component, a colored pigment, and a solvent component.
【０００９】また本発明は、耐候性鋼材、特にＳＭＡ材
やＳＰＡ材に、上記塗料組成物を塗布することを特徴と
するＳＭＡ材やＳＰＡ材の防食方法を提供するものであ
る。The present invention also provides a method for preventing corrosion of SMA and SPA materials, which comprises applying the above-mentioned coating composition to a weather-resistant steel material, particularly an SMA or SPA material.
【００１０】[0010]
【発明の実施の形態】本発明の塗料組成物は、上記のよ
うに導電性ポリマー粒子、塗膜形成成分、有色顔料およ
び溶剤成分を含むものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The coating composition of the present invention contains conductive polymer particles, a film-forming component, a colored pigment and a solvent component as described above.
【００１１】本発明の塗料組成物に使用される成分のう
ち、導電性ポリマー粒子は、ポリ共役π電子系を有する
有機ポリマーの粒子であり、ポリアニリン、ポリピロー
ル、ポリチオフェン等が使用される。このうち、ポリア
ニリンがより好ましい。Among the components used in the coating composition of the present invention, the conductive polymer particles are particles of an organic polymer having a polyconjugated π-electron system, such as polyaniline, polypyrrole, and polythiophene. Among them, polyaniline is more preferred.
【００１２】この導電性ポリマーのうち、ポリア二リン
粒子としては、塗料組成物中で、分散性を有するポリア
ニリンであれば特に制限されないが、例えば、特許２５
１９５５１号公報（ＰＣＴ／ＥＰ ８８／００７９８の
実施例２により合成される）や、特公平８−５１０２７
５号公報（ＶＥＲＳＩＣＯＮ アライドシグナル社製）
などで開示されているポリアニリンを使用することがで
きる。Among the conductive polymers, the polyaniline particles are not particularly limited as long as they are dispersible polyaniline in the coating composition.
No. 19551 (synthesized according to Example 2 of PCT / EP 88/00798) and Japanese Patent Publication No. 8-51027.
No. 5 (VERSICON Allied Signal Co., Ltd.)
And the like.
【００１３】また、この導電性ポリマー粒子の粒径は特
に制約されるものではないが、平均粒子径が１０ｎｍ〜
５００ｎｍ 程度のものが好ましい。Although the particle size of the conductive polymer particles is not particularly limited, the average particle size is 10 nm to 10 nm.
Those having a thickness of about 500 nm are preferred.
【００１４】一方、本発明の塗料組成物を構成する成分
のうち塗膜形成成分は、特に制約はなく、従来公知の塗
膜形成成分が使用される。この塗膜成分としては、天然
樹脂や加工樹脂および合成樹脂等が使用される。このう
ち、天然樹脂としては、アセチルセルロース、ニトロセ
ルロース、ベンジルセルロース等のセルロース誘導体、
ロジン、シェラック等が、加工樹脂としては、硬化ロジ
ン、エステルゴム等が例示される。また、合成樹脂とし
ては、アルキッド樹脂、不飽和ポリエステル樹脂、フェ
ノール樹脂、アミノ樹脂、エポキシ樹脂、ポリウレタン
樹脂、アルデヒド樹脂、ケトン樹脂、ビニル樹脂、アク
リル樹脂、フッ素樹脂等が挙げられる。これらの樹脂
は、必要とされる塗膜の強度、厚さに応じ適宜選択使用
される。On the other hand, among the components constituting the coating composition of the present invention, the coating film forming component is not particularly limited, and a conventionally known coating film forming component is used. As the coating film component, a natural resin, a processed resin, a synthetic resin, or the like is used. Among them, as natural resins, acetyl cellulose, nitrocellulose, cellulose derivatives such as benzyl cellulose,
Rosin, shellac, and the like, and examples of the processing resin include a cured rosin, an ester rubber, and the like. Examples of the synthetic resin include an alkyd resin, an unsaturated polyester resin, a phenol resin, an amino resin, an epoxy resin, a polyurethane resin, an aldehyde resin, a ketone resin, a vinyl resin, an acrylic resin, and a fluororesin. These resins are appropriately selected and used according to the required strength and thickness of the coating film.
【００１５】更に、有色顔料としては、各種の無機顔
料、例えば、酸化鉄、カーボンブラック、酸化クロム、
紺青、群青等や、有機顔料、例えば、タール系色素をレ
ーキ化したもの等が挙げられる。これらの有色顔料も、
塗料組成物に要求される色調に応じて選択されるが、例
えばポリアニリン粒子は導電性を有する状態で緑色に着
色しているので、あまり薄い色調を選択することは好ま
しくない。好ましい色調としては、たとえば、茶（ブラ
ウン）、黒（ブラック）等のものである。Further, as the colored pigment, various inorganic pigments such as iron oxide, carbon black, chromium oxide,
Navy blue, ultramarine blue and the like, and organic pigments such as tar-based dyes made into lakes are exemplified. These colored pigments also
The selection is made according to the color tone required for the coating composition. For example, since the polyaniline particles are colored green in a conductive state, it is not preferable to select a color tone that is too light. Preferred colors include, for example, brown (brown) and black (black).
【００１６】更にまた、溶剤成分としては、炭化水素系
溶剤、脂肪族系溶剤、芳香族系溶剤、アルコール系溶
剤、エステル系溶剤、ケトン系溶剤、エーテル系溶剤、
塩素系溶剤等の有機系溶剤が使用される。これらの溶剤
成分は、塗膜形成成分等の他の配合成分に応じ、適宜選
択使用することができる。Further, the solvent component includes hydrocarbon solvents, aliphatic solvents, aromatic solvents, alcohol solvents, ester solvents, ketone solvents, ether solvents, and the like.
Organic solvents such as chlorine solvents are used. These solvent components can be appropriately selected and used according to other compounding components such as a coating film forming component.
【００１７】本発明の塗料組成物は、上記各成分を常法
に従って混合することにより調製される。例えば、塗膜
形成成分を溶剤成分中に溶解させた後、この溶液に微細
に粉砕された有色顔料やその他の成分を加え、均一とな
るまで混合することにより調製される。The coating composition of the present invention is prepared by mixing the above components according to a conventional method. For example, it is prepared by dissolving a film-forming component in a solvent component, adding a finely pulverized colored pigment and other components to the solution, and mixing until uniform.
【００１８】本発明の塗料組成物における、各成分の配
合量は、導電性ポリマー粒子が、０．１から４５質量％
（以下、「％」とする）程度、特に、１から１０％程度
とすることが好ましく、他の塗膜形成成分、有色顔料お
よび溶剤成分については、通常の塗料組成物における配
合量、例えば、塗膜形成成分が２０から６５％程度、有
色顔料が０．５から４％程度、溶剤成分が２０から７５
％程度とすることが好ましい。In the coating composition of the present invention, the amount of each component is 0.1 to 45% by mass of the conductive polymer particles.
(Hereinafter, referred to as “%”), particularly preferably about 1 to 10%. About other coating film forming components, colored pigments and solvent components, the compounding amount in a usual coating composition, for example, The coating film forming component is about 20 to 65%, the colored pigment is about 0.5 to 4%, and the solvent component is 20 to 75%.
% Is preferable.
【００１９】この塗料組成物の調製に当たっては、上記
した成分の他、一般に塗料組成物において用いられる各
種添加剤を適宜使用することができる。このような添加
剤としては、例えば、可塑剤、乾燥剤（硬化剤）、顔料
分散剤、乳化剤、増粘剤、飛散防止剤などが挙げられ
る。In preparing the coating composition, in addition to the above components, various additives generally used in coating compositions can be appropriately used. Examples of such additives include a plasticizer, a desiccant (curing agent), a pigment dispersant, an emulsifier, a thickener, and an anti-scattering agent.
【００２０】かくして得られる本発明の塗料組成物は、
主に耐候性鋼材に塗布することによりその効果を発揮さ
せることができる。被塗布対象となる耐候性鋼材の種類
は特に制限はないが、本発明の塗料組成物の機能を最大
限に発揮するという点からは、ＳＭＡ材及びＳＰＡ材に
塗布することが好ましい。このＳＭＡ材は、ＪＩＳにお
いて、ＳＭＡ４００ＡＷ、ＡＰ、ＢＷ、ＢＰ、ＣＷ、Ｃ
Ｐ、ＳＭＡ４９０ＡＷ、ＡＰ、ＢＷ、ＢＰ、ＣＷ、ＣＰ
およびＳＭＡ５７０Ｗ、Ｐとして規格化されている溶接
構造用耐候性熱間圧延鋼材である（ＪＩＳ Ｇ ３１１
４）。またＳＰＡ材としてはＳＰＡ−ＨおよびＳＰＡ−
Ｃとして規格化されている高耐候性圧延綱材である（Ｊ
ＩＳ Ｇ ３１２５）。市販品としては、例えば「ＣＯ
Ｒ−ＴＥＮ」として新日本製鐵（株）から販売されてい
るものを挙げることができる。The thus obtained coating composition of the present invention comprises:
The effect can be exerted mainly by applying it to a weather-resistant steel material. The type of the weather-resistant steel material to be applied is not particularly limited, but is preferably applied to the SMA material and the SPA material from the viewpoint of maximizing the function of the coating composition of the present invention. According to JIS, this SMA material is SMA400AW, AP, BW, BP, CW, C
P, SMA490AW, AP, BW, BP, CW, CP
And SMA570W, P, a weather-resistant hot-rolled steel material for welded structures standardized as P (JIS G 311).
4). SPA materials include SPA-H and SPA-
C is a highly weathered rolled steel material standardized as C (J
IS G 3125). As a commercially available product, for example, "CO
Examples of “R-TEN” include those sold by Nippon Steel Corporation.
【００２１】本発明の塗料組成物の耐候性鋼材に塗布す
る方法としては、一般的な塗装方法であれば特に制限は
なく、素地の前処理を行った後、または一部赤さびが発
生した状態ではけ塗り、吹きつけ塗装、浸漬塗装、静電
スプレー塗装、静電粉体塗装、電着塗装等の種々の塗装
方法を用いて、塗料を耐候性鋼材に塗布することができ
る。The method of applying the coating composition of the present invention to a weather-resistant steel material is not particularly limited as long as it is a general coating method, and is performed after pretreatment of the base material or in a state where red rust is partially generated. The paint can be applied to the weather-resistant steel using various coating methods such as brushing, spray coating, dip coating, electrostatic spray coating, electrostatic powder coating, and electrodeposition coating.
【００２２】またその塗布も、１回塗り、多層塗りのい
ずれであっても良く、本塗装に先立ちプライマー処理し
てから塗布しても良い。なお、プライマー処理に当たっ
ては、公知の導電性ポリマー粒子を含有するプライマ
ー、例えば、ポリアニリンプライマーである「ＣＯＲＲ
ＰＡＳＳＩＶ」（日本オルメコン社製）を使用すること
もできる。The coating may be applied once or multi-layered, and may be applied after a primer treatment prior to the main coating. In the primer treatment, a primer containing a known conductive polymer particle, for example, a polyaniline primer “CORR”
PASSIV "(manufactured by Nippon Olmecon) can also be used.
【００２３】このようにして本発明の塗料組成物が塗布
されたＳＭＡ材等の耐候性鋼材は、赤さびを発生するこ
となく、その表面に高耐食性の「安定化さび層」を形成
するものであり、外観の良い状態で高耐食性を達成する
ことができる。The weather-resistant steel material such as the SMA material to which the coating composition of the present invention is applied in such a manner forms a highly corrosion-resistant “stabilized rust layer” on the surface without generating red rust. Yes, high corrosion resistance can be achieved in good appearance.
【００２４】[0024]
【作用】本発明の塗料組成物が、耐候性鋼材、特にＳＭ
Ａ材やＳＰＡ材に優れた耐食性と外観を付与しうるの
は、次のような理由によるものと解される。すなわち、
本発明の塗料組成物中に含有されている導電性ポリマー
粒子は、塗布された鋼材との関係においては酸化還元触
媒として機能する。そして、この酸化還元反応により、
鋼材表面には、最大で１μｍの主としてＦｅＯＯＨ（α
−、β−）、Ｆｅ２Ｏ３、Ｆｅ３Ｏ４からなる酸化皮膜
が形成される。そして、この皮膜は固有電位が貴の方向
に移行するとともに、耐候性鋼材に含有されるＰ、Ｎ
ｉ、Ｃｕ、Ｃｒ等の耐光性に寄与する単体及び化合物を
含むことにより初期の安定化さび層が人工的に形成さ
れ、以後この人工的に形成されたさび層は耐候性鋼材固
有の「安定化さび層」の形成に寄与する。つまり、ＳＭ
Ａ材やＳＰＡ材の裸使用では、自然に発生する赤さびに
より徐々に形成される「安定化さび層」が、本発明の塗
料組成物中の導電性ポリマー粒子の作用により、人工的
に形成され、耐食性を奏するのである。The coating composition of the present invention is made of a weather-resistant steel, especially SM
It is understood that the reason why excellent corrosion resistance and appearance can be imparted to the A material and the SPA material is as follows. That is,
The conductive polymer particles contained in the coating composition of the present invention function as an oxidation-reduction catalyst in relation to the applied steel material. And by this redox reaction,
On the steel material surface, FeOOH (α
− , Β − ), an oxide film composed of Fe 2 O 3 and Fe 3 O 4 is formed. Then, this film has a characteristic potential that shifts to a noble direction, and P, N contained in the weathering steel material.
An initial stabilized rust layer is artificially formed by including a simple substance and a compound such as i, Cu, Cr, etc., which contribute to light resistance, and the artificially formed rust layer is thereafter referred to as a "stability" specific to weathering steel. It contributes to the formation of a "rust layer". That is, SM
In the naked use of A material or SPA material, a "stabilized rust layer" gradually formed by naturally occurring red rust is artificially formed by the action of the conductive polymer particles in the coating composition of the present invention. It has corrosion resistance.
【００２５】そして、本発明の塗料組成物を使用した場
合は、赤さびの発生を経ずして「安定化さび層」が形成
されると共に、当該組成物が塗料としても作用するため
に、構造物の外観を任意の色調とすることができ、構造
物の外観をも向上することができ、耐候性鋼材の使用範
囲を広げることができるものである。When the coating composition of the present invention is used, a "stabilized rust layer" is formed without generation of red rust, and the composition also acts as a coating. The appearance of the object can be any color tone, the appearance of the structure can be improved, and the range of use of the weather-resistant steel can be expanded.
【００２６】[0026]
【実施例】以下に実施例および参考例を挙げて本発明を
さらに詳細に説明するが、本発明はこれらに限定される
ものではない。The present invention will be described in more detail with reference to examples and reference examples below, but the present invention is not limited to these examples.
【００２７】参 考 例 １ 塗料組成物の製造：以下に示した成分を、常法を用いて
本発明品１の塗料組成物を製造した。REFERENCE EXAMPLE 1 Production of a coating composition: The following components were used to produce the coating composition of the product 1 of the present invention using the following components in a conventional manner.
【００２８】 （ 塗料組成物の組成 ） 成 分 質量％ １． 変成アルコール ５５ ２． ブチラール樹脂 １０ ３． ポリアニリン ８ ４． ブラウン顔料 ４ ５． ブタノール 残部(Composition of coating composition) Ingredient mass% 1. Modified alcohol 55 2. Butyral resin 10 3. Polyaniline 8 4. Brown pigment 4 5. Butanol balance
【００２９】参 考 例 ２ 塗料組成物の製造：以下に示した成分を、常法を用いて
比較品１の塗料組成物を製造した。REFERENCE EXAMPLE 2 Production of a coating composition: A coating composition of Comparative Example 1 was produced from the following components by a conventional method.
【００３０】 （ 塗料組成物の組成 ） 成 分 質量％ １． 変成アルコール ５５ ２． ブチラール樹脂 １０ ３． 酸化銅 ２ ４． リン酸 １ ５． 無水クロム酸 １ ６． クロム酸塩 ２ ７． 水 ２ ８． 粉末亜鉛 ０．５ ９． 酸化鉄 １０ １０． ブタノール 残部(Composition of Coating Composition) Ingredient Mass% 1. Modified alcohol 55 2. Butyral resin 10 3. Copper oxide 2 4. Phosphoric acid 15. Chromic anhydride 16. Chromate 2 7. Water 2 8. 8. Powder zinc 0.5 Iron oxide 10 10. Butanol balance
【００３１】参 考 例 ３ 塗料組成物の製造：以下に示した成分を、常法を用いて
比較品３の塗料組成物を製造した。Reference Example 3 Production of coating composition: A coating composition of Comparative Example 3 was produced from the following components by a conventional method.
【００３２】 （ 塗料組成物の組成 ） 成 分 質量％ １． 変成アルコール ５５ ２． ブチラール樹脂 １０ ３． ポリアニリン ８ ４． ブタノール 残部(Composition of Coating Composition) Ingredient Mass% 1. Modified alcohol 55 2. Butyral resin 10 3. Polyaniline 8 4. Butanol balance
【００３３】実 施 例 １ 暴露後の保護皮膜形成の確認（１）：参考例１（本発明
品１とする）及び参考例２（比較品１とする）で得られ
た塗料組成物を、厚さ６ｍｍ、大きさ６５ｍｍ×２００
ｍｍの耐候性綱材にスプレーにて一様に塗布し、耐候性
表面に２０μｍの皮膜を形成した。これらの試料を田園
環境下で２年６月間暴露し、暴露後の試料及び暴露後の
試料をシンナーにて皮膜を除去した試料について、下記
の方法にてイオン透過抵抗値を測定して、酸化被膜（安
定化さび層）の形成を確認した。Example 1 Confirmation of formation of protective film after exposure (1): The coating compositions obtained in Reference Example 1 (referred to as product 1 of the present invention) and Reference Example 2 (referred to as comparative product 1) were Thickness 6mm, size 65mm × 200
mm was applied uniformly by a spray to a weather-resistant steel material having a thickness of 20 mm to form a film of 20 μm on the weather-resistant surface. These samples were exposed for 2 years and 6 months in a rural environment, and the samples after exposure and the samples after exposure were removed from the coating with a thinner. Formation of a film (stabilized rust layer) was confirmed.
【００３４】（ イオン透過抵抗値の測定 ）測定器「Ru
st Stability Tester（新日本製鐵社製）」を用い、
０．１ＮのＮａ２ＳＯ４を含有するプローブを構成する
２本の電極を試料の測定面に当てて、２本の電極間に約
１０ｋＨｚの高周波をかけて、酸化被膜を形成している
鋼材の表面を間接電解して、イオン透過抵抗値を測定す
した。一般に、イオン透過抵抗値は１ｋΩ以上の測定値
を示せばさび層は安定化の方向に向かっているといえ、
さらに３ｋΩあれば十分に安定化さび層が形成されてい
るといえる。また、安定化さび層が形成されるのに費や
される期間は、一般に、無塗装材（裸材）では約４〜７
年ほどと長期であり、２〜３年程度の初期化段階で０．
５ｋΩ前後またはそれ以上のイオン透過抵抗値を示すこ
とができれば、安定化傾向に向かう初期化段階のさび層
（酸化被膜）が形成されていることを示す。(Measurement of Ion Permeation Resistance Value)
st Stability Tester (Nippon Steel Corporation) "
A steel material having an oxide film formed by applying two electrodes constituting a probe containing 0.1 N Na 2 SO 4 to a measurement surface of a sample and applying a high frequency of about 10 kHz between the two electrodes. Was subjected to indirect electrolysis to measure an ion permeation resistance value. In general, if the ion permeation resistance shows a measured value of 1 kΩ or more, it can be said that the rust layer is heading for stabilization.
Furthermore, it can be said that a stabilizing rust layer is sufficiently formed if the resistance is 3 kΩ. In addition, the period spent for forming the stabilized rust layer is generally about 4 to 7 for an unpainted material (bare material).
It is as long as about a year, and it is 0.
If an ion permeation resistance value of about 5 kΩ or more can be shown, it indicates that a rust layer (oxide film) in the initialization stage toward the stabilization tendency is formed.
【００３５】（結果）(Result)
【表１】 [Table 1]
【００３６】表１の結果のように、本発明品１の塗料組
成物を塗布した試料を暴露試験後に塗布被膜をシンナー
で除去した後のイオン透過抵抗値が０．８３２ｋΩの値
を示し、塗布後短期間で初期段階の保護酸化被膜（さび
層）が形成されていることが確認できた。一方、比較品
１の塗料組成物を塗布した試料は、塗布皮膜をシンナー
で除去すると、鋼材表面はショットブラストを施した状
態と同じく、イオン透過抵抗値を測定することができな
かった。よって、保護酸化被膜が形成がされていないこ
とが確認できた。As shown in the results in Table 1, the sample coated with the coating composition of the product 1 of the present invention showed an ion permeation resistance of 0.832 kΩ after the coating film was removed with a thinner after the exposure test. It was confirmed that the protective oxide film (rust layer) in the initial stage was formed in a short period of time. On the other hand, in the sample to which the coating composition of Comparative Example 1 was applied, when the coating film was removed with a thinner, the ion transmission resistance value of the steel material surface could not be measured as in the state where shot blasting was performed. Therefore, it was confirmed that the protective oxide film was not formed.
【００３７】実 施 例 ２ 暴露後の保護皮膜形成の確認（２）：参考例１で得られ
た本発明品１の塗料組成物を、厚さ３．２ｍｍ、大きさ
９１４ｍｍ×３００ｍｍの耐候性綱材にスプレーにて一
様に塗布し、耐候性表面に１０μｍ及び２０μｍの皮膜
を形成した２種類の試料を作成した。これらの試料につ
いて田園環境下にて１年間暴露し、シンナーにて皮膜を
除去して、実施例１と同様にイオン透過抵抗値を測定し
た。また、同サイズの耐候性綱にショットブラスト処理
を施し、同様な環境下で暴露した試料（比較品２とす
る）についても、イオン透過抵抗値を測定した。結果を
表２に示す。Example 2 Confirmation of formation of protective film after exposure (2): Weather resistance of 3.2 mm in thickness and 914 mm × 300 mm in size of the coating composition of product 1 of the present invention obtained in Reference Example 1 Two types of samples were prepared by uniformly coating the rope material with a spray to form a 10 μm and 20 μm film on the weather-resistant surface. These samples were exposed in a rural environment for one year, the film was removed with a thinner, and the ion permeation resistance was measured in the same manner as in Example 1. In addition, the ion permeation resistance value was measured also for a sample (comparative product 2) in which the same size weatherproof rope was subjected to a shot blast treatment and exposed in a similar environment. Table 2 shows the results.
【００３８】[0038]
【表２】 表２の結果のように、本発明品１の塗料組成物を塗布し
た試料は、シンナーにて皮膜を除去しても、０．５ｋΩ
前後のイオン透過抵抗値を示し、ショットブラスト処理
を施し暴露した試料と同レベルの保護酸化被膜が形成さ
れていることが確認できた。[Table 2] As shown in Table 2, the sample coated with the coating composition of the product 1 of the present invention was 0.5 kΩ even when the film was removed with a thinner.
It shows the ion permeation resistance values before and after, confirming that a protective oxide film of the same level as that of the sample subjected to the shot blast treatment and exposed was formed.
【００３９】実 施 例 ３ １週間放置後の保護皮膜形成の確認（２）：本発明品１
の塗料組成物を、厚さ６ｍｍ、大きさ５０ｍｍ×１５０
ｍｍの耐候性綱材に、スプレーにて一様に塗布し、耐候
性鋼材表面に１０μｍ及び２０μｍの皮膜を形成した２
種類の試料を作成した後、これらを田園環境下にて１週
間放置した。得られた試料についてシンナーにて皮膜を
除去して、実施例１と同様にイオン透過抵抗値を測定し
た。結果は０．１２３ｋΩと０．１４５ｋΩであり、１
週間という短期間でも保護酸化被膜が形成されているこ
とが確認できた。Example 3 Confirmation of formation of protective film after standing for one week (2): product 1 of the present invention
A coating composition of thickness 6 mm, size 50 mm × 150
mm was applied uniformly by spraying to a weather-resistant steel material having a thickness of 10 μm and 20 μm on the surface of the weather-resistant steel material.
After preparing various kinds of samples, they were left for one week in a rural environment. The film was removed from the obtained sample with a thinner, and the ion transmission resistance was measured in the same manner as in Example 1. The results are 0.123 kΩ and 0.145 kΩ, and 1
It was confirmed that the protective oxide film was formed even in a short period of a week.
【００４０】実 施 例 ４ 暴露後の外観確認：参考例１（本発明品１）及び参考例
３（比較品３）の塗料組成物を、厚さ６ｍｍ、大きさ５
０ｍｍ×１５０ｍｍの耐候性綱材に、スプレーにて一様
に塗布し、耐候性表面に２０μｍの皮膜を形成した。こ
れらの試料について田園環境下にて２年６月間暴露し、
塗布直後及び暴露後の試料の外観を比較した。外観写真
を図１〜図４（図１、２は塗布直後、図３、４は暴露
後）に示す。Example 4 Confirmation of Appearance after Exposure: The coating compositions of Reference Example 1 (Product 1 of the present invention) and Reference Example 3 (Comparative Product 3) were prepared by applying a coating composition of thickness 6 mm and size 5
The coating was uniformly applied to a weather-resistant steel material of 0 mm × 150 mm by spraying to form a 20 μm film on the weather-resistant surface. These samples were exposed for 2 years and 6 months in a rural environment,
The appearances of the samples immediately after application and after exposure were compared. Appearance photographs are shown in FIGS. 1 to 4 (FIGS. 1 and 2 are immediately after application, and FIGS. 3 and 4 are after exposure).
【００４１】本発明品１の塗料組成物を塗布した試料
は、塗布直後（図１）も暴露後（図３）も顔料の色がそ
のままであり、ポリアニリン粒子が導電性を有するとき
に生じる色（薄緑色）が外観に表れることはない。一
方、比較品３の塗料組成物を塗布した試料は、塗布直後
（図２）と暴露後（図４）を比較すると、暴露後にはポ
リアニリンが導電性を有する時に生じる色（薄緑色）が
表面に表れてしまう。よって、顔料を含有させることに
よりポリアニリンの色が鋼材表面に表れるのを防止でき
る。In the sample coated with the coating composition of the product 1 of the present invention, the color of the pigment remains unchanged immediately after coating (FIG. 1) and after exposure (FIG. 3), and the color produced when the polyaniline particles have conductivity. (Light green) does not appear on the appearance. On the other hand, in the sample coated with the coating composition of Comparative Product 3, the color (light green) generated when the polyaniline has conductivity after the exposure is compared with the sample immediately after the coating (FIG. 2) and after the exposure (FIG. 4). Will appear in Therefore, the color of polyaniline can be prevented from appearing on the steel material surface by including the pigment.
【００４２】[0042]
【発明の効果】本発明の塗料組成物によれは、耐候性鋼
材、特にＳＭＡ材やＳＰＡ材上に、赤さびを発生させる
ことなく「安定化さび層」を形成することができるもの
である。また、本発明の塗料組成物に配合する有色顔料
成分を適宜選択することにより、任意の色調とすること
ができ、また、ポリアニリンの色が表面に表れるのを防
ぐことができる。According to the coating composition of the present invention, a "stabilized rust layer" can be formed on a weather-resistant steel material, in particular, an SMA material or an SPA material without generating red rust. Further, by appropriately selecting the colored pigment component to be blended in the coating composition of the present invention, an arbitrary color tone can be obtained, and the color of polyaniline can be prevented from appearing on the surface.
【００４３】従って、本発明の塗料組成物は、従来問題
とされていた赤さびを発生させることなくＳＭＡ材やＳ
ＰＡ材等の耐食性鋼材に高耐食性を付与すると同時に、
任意の色調、外観を付与することができるため、これら
耐候性鋼材の使用範囲を大きく拡大することができるも
のである。Accordingly, the coating composition of the present invention can be used for SMA material or S
At the same time as imparting high corrosion resistance to corrosion resistant steel materials such as PA materials,
Since any color tone and appearance can be imparted, the range of use of these weather-resistant steel materials can be greatly expanded.
【図面の簡単な説明】[Brief description of the drawings]
【図１】 参考例１で得られた塗料組成物を耐候性鋼材
に塗布した直後の表面写真である。FIG. 1 is a photograph of the surface immediately after the coating composition obtained in Reference Example 1 was applied to a weather-resistant steel material.
【図２】 参考例３で得られた塗料組成物を耐候性鋼材
に塗布した直後の表面写真である。FIG. 2 is a photograph of the surface immediately after the coating composition obtained in Reference Example 3 was applied to a weather-resistant steel material.
【図３】 参考例１で得られた塗料組成物を耐候性鋼材
に塗布し２年６月暴露した直後の表面写真である。FIG. 3 is a photograph of the surface immediately after the coating composition obtained in Reference Example 1 was applied to a weather-resistant steel material and exposed for 2 years and June.
【図４】 参考例３で得られた塗料組成物を耐候性鋼材
に塗布し２年６月暴露した後の表面写真である。 以 上FIG. 4 is a photograph of the surface after the coating composition obtained in Reference Example 3 was applied to a weather-resistant steel and exposed for 2 years and June. that's all
───────────────────────────────────────────────────── フロントページの続き (72)発明者 鳥潟 浩司 東京都大田区東馬込１−14−11 (72)発明者 飯田 博之 静岡県田方郡修善寺町牧之郷498 Ｆターム(参考） 4J038 BA051 BA081 BA091 BA191 BA231 CD091 CG141 DA021 DA041 DA111 DB001 DD121 DD181 DG031 DJ002 KA06 KA08 NA01 NA03 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Koji Torigata 1-14-11 Higashimagome, Ota-ku, Tokyo (72) Inventor Hiroyuki Iida 498 Makinosato, Shuzenji-cho, Tata-gun, Shizuoka F-term (reference) 4J038 BA051 BA081 BA091 BA091 BA191 BA231 CD091 CG141 DA021 DA041 DA111 DB001 DD121 DD181 DG031 DJ002 KA06 KA08 NA01 NA03
Claims (8)
色顔料および溶剤成分を含有する塗料組成物。1. A coating composition containing conductive polymer particles, a coating-forming component, a colored pigment, and a solvent component.
体に対して０．１〜４５質量％である請求項第１項記載
の塗料組成物。2. The coating composition according to claim 1, wherein the amount of the conductive polymer is 0.1 to 45% by mass based on the whole coating composition.
求項第１項または第２項記載の塗料組成物。3. The coating composition according to claim 1, wherein the conductive polymer is polyaniline.
ないし第３項の何れかの項記載の塗料組成物。4. The coating composition according to claim 1, wherein the solvent component is an organic solvent.
ないし第４項の何れかの項記載の塗料組成物。5. The coating composition according to claim 1, which is for a weather-resistant steel material.
鋼材または高耐候性鋼材である請求項第５項記載の塗料
組成物。6. The coating composition according to claim 5, wherein the weather-resistant steel is a weather-resistant hot-rolled steel for welded structures or a highly weather-resistant steel.
膜形成成分、有色顔料および溶剤成分を含有する塗料組
成物を塗布することを特徴とする耐候性鋼材の防食方
法。7. A method for preventing corrosion of a weather-resistant steel material, comprising applying a coating composition containing a conductive polymer particle, a coating film-forming component, a colored pigment, and a solvent component to the weather-resistant steel material.
鋼材または高耐候性鋼材である請求項第７項記載の防食
方法。8. The anticorrosion method according to claim 7, wherein the weathering steel is a weathering hot-rolled steel for a welded structure or a high weathering steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001136406A JP3962220B2 (en) | 2001-05-07 | 2001-05-07 | Coating composition and method for preventing corrosion of weathering steel using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001136406A JP3962220B2 (en) | 2001-05-07 | 2001-05-07 | Coating composition and method for preventing corrosion of weathering steel using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002327151A true JP2002327151A (en) | 2002-11-15 |
| JP3962220B2 JP3962220B2 (en) | 2007-08-22 |
Family
ID=18983685
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001136406A Expired - Lifetime JP3962220B2 (en) | 2001-05-07 | 2001-05-07 | Coating composition and method for preventing corrosion of weathering steel using the same |
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| Country | Link |
|---|---|
| JP (1) | JP3962220B2 (en) |
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| JP2006326459A (en) * | 2005-05-25 | 2006-12-07 | Tech Taiyo Kogyo Co Ltd | Manufacturing method of high adhesion and high corrosion resistance steel material, and coating film adhesion improving method |
| WO2007104117A1 (en) * | 2006-03-10 | 2007-09-20 | Ipqm- Instituto De Pesquisas Da Marinha | Composition intended to be applied in steels for corrosion protection of their surfaces and process for preparing the same |
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| WO2005107452A1 (en) * | 2004-04-27 | 2005-11-17 | Walter Pollmann | Animal repelling device |
| JP2006326459A (en) * | 2005-05-25 | 2006-12-07 | Tech Taiyo Kogyo Co Ltd | Manufacturing method of high adhesion and high corrosion resistance steel material, and coating film adhesion improving method |
| JP4549928B2 (en) * | 2005-05-25 | 2010-09-22 | テック大洋工業株式会社 | Method for producing high adhesion high corrosion resistance steel material and method for improving adhesion of coating film |
| WO2007104117A1 (en) * | 2006-03-10 | 2007-09-20 | Ipqm- Instituto De Pesquisas Da Marinha | Composition intended to be applied in steels for corrosion protection of their surfaces and process for preparing the same |
| KR101465026B1 (en) * | 2012-07-17 | 2014-12-04 | 테크 다이요 코교 코포레이션 리미티드 | Anti-corrosive coating composition precursor |
| US9102838B2 (en) | 2012-07-17 | 2015-08-11 | Tech. Taiyo Kogyo Co., Ltd. | Anti-corrosive coating composition precursor |
| JP2015129220A (en) * | 2014-01-07 | 2015-07-16 | テック大洋工業株式会社 | Rust preventive coating composition precursor |
| CN103992675A (en) * | 2014-06-06 | 2014-08-20 | 厦门大学 | Marine heavy-duty anti-corrosion coating and preparation method thereof |
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