JP2001018325A - Resin coating, and manufacture thereof, and method for making up for resin coating - Google Patents
Resin coating, and manufacture thereof, and method for making up for resin coatingInfo
- Publication number
- JP2001018325A JP2001018325A JP19593899A JP19593899A JP2001018325A JP 2001018325 A JP2001018325 A JP 2001018325A JP 19593899 A JP19593899 A JP 19593899A JP 19593899 A JP19593899 A JP 19593899A JP 2001018325 A JP2001018325 A JP 2001018325A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- resin
- film
- layer
- coating layer
- 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
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
- Paints Or Removers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、金属管やタンクな
どの金属材を海水や薬液による腐食から守るために金属
材の表面に施す樹脂被覆に関し、具体的には、曲り管の
内面や管路の内奥部のような、被覆施工の容易でない対
象にも容易に施工することのできる高性能被覆に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin coating applied to a surface of a metal material such as a metal tube or a tank to protect the metal material from corrosion by seawater or a chemical solution. The present invention relates to a high-performance coating that can be easily applied to an object where coating is not easy, such as an inner part of a road.
【０００２】[0002]
【従来の技術】海水配管の内面，鋼管杭の外面，酸液タ
ンクの内面などの長期防食手段として、近年は厚膜型
（膜厚１〜５mm程度）の樹脂被覆が多用されており、中
でもポリエチレンなどの無極性樹脂による被覆が主流で
ある。これは、無極性即ち非親水性であることに由来す
る、水性腐食環境に対する優れた耐久性，環境遮断性，
非汚染性（貝やスラッジが付着しにくい）、あるいは、
パイプ内流体を低い圧力損失で流送することのできる低
流送抵抗特性に加えて、機械的にも強靭であり適度に柔
軟であることによると考えられる。2. Description of the Related Art In recent years, thick-film type (about 1 to 5 mm thick) resin coatings have been widely used as a long-term anticorrosion means such as the inner surface of seawater pipes, the outer surface of steel pipe piles, and the inner surface of acid solution tanks. Coating with a nonpolar resin such as polyethylene is the mainstream. This is because it is non-polar, that is, non-hydrophilic, and has excellent durability against aqueous corrosive environments, environmental barrier properties,
Non-contaminating (shellfish and sludge hardly adhere), or
This is considered to be due to the fact that, in addition to the low flow resistance characteristic capable of flowing the fluid in the pipe with a low pressure loss, the pipe is mechanically tough and moderately flexible.
【０００３】ポリエチレンを代表とする無極性樹脂によ
る被覆の施工は、被覆材料を加熱溶融により流動化した
状態で金属材の表面に適用して行うものであり、この
際、金属材の方も200〜300℃程度に加熱する。しかし
て、上記施工形態は、直管状の金属管のような単純な形
状の金属材については、押出被覆法や粉体融着法を利用
した高能率の工場生産が行えるという利点をもたらす。
一方、曲り管やＴ字管のような複雑な形状の金属材、あ
るいは、敷設後の管路や鋼管杭のような、動かすことの
できない金属材について、現地で施工する場合には難題
が多く、これの解決に多大なコストを要している。[0003] The coating with a non-polar resin represented by polyethylene is performed by applying the coating material to the surface of a metal material in a state where the coating material is fluidized by heating and melting. Heat to about 300 ° C. Thus, the above-described construction mode has an advantage that a metal material having a simple shape such as a straight metal tube can be manufactured at a high efficiency in a factory using an extrusion coating method or a powder fusion method.
On the other hand, there are many difficulties when constructing metal materials of complicated shapes such as bent pipes and T-tubes, or immovable metal materials such as pipes and steel pipe piles after laying on site. However, the solution is very costly.
【０００４】たとえば、曲り管の内面ヘの被覆施工は、
炉加熱した曲り管の内部に被覆材料の粉体を封入したう
えで、管体を２軸回転させるなどして被覆材料を対象面
に均等に行き亘らせて行う。即ち、多大な設備コストと
加熱された重量物のハンドリングといった苛酷な作業負
荷が伴う。管径が１ｍを超えるような大径管では、上記
問題が特に重大である。[0004] For example, the coating on the inner surface of a bent pipe is performed as follows.
After the powder of the coating material is sealed in the inside of the bent tube heated by the furnace, the coating material is evenly spread over the target surface by, for example, rotating the pipe body biaxially. That is, it involves a large equipment cost and a severe workload such as handling of a heated heavy object. In a large-diameter pipe having a diameter exceeding 1 m, the above problem is particularly serious.
【０００５】敷設後の管路内面ヘの被覆施工は更に困難
である。よって、内面被覆管路の敷設は、両管端部に溶
接接続のための未被覆領域を残して内面被覆を工場施工
した単管を用意し、これを溶接接続して管路を形成した
のち、溶接部を中心とする未被覆領域に補完被覆を施す
という工法で行われる。ところが、管路長さの高々10％
に過ぎない上記未被覆領域への補完被覆施工が相変わら
ず容易ではない。即ち、上記被覆施工にも金属材の加熱
が必要であり、しかもこれを、未被覆領域に隣接する工
場施工被覆が損われないように、且つ、補完被覆が工場
施工被覆と溶接一体化されるように行う必要があり、こ
の加熱に設備，作業の両面で多大なコストがかヽる。動
かせない管路の内面ヘの均等な被覆材料供給にも同様に
コストが嵩む。上記難題を避けるべく、フランジ付金属
管の内面からフランジ座面に亘って樹脂被覆を施したも
のをボルト接続して内面被覆管路を形成することも行わ
れるが、フランジのコストが管径の増大に従って比例以
上の割合で増大するため、管径が400mmを超える管路へ
のフランジ方式の適用は、コスト面から通常は考えにく
い。[0005] It is more difficult to coat the inner surface of the pipeline after the installation. Therefore, when laying the inner surface coating pipeline, prepare a single pipe with the inner surface coating factory-fabricated, leaving an uncoated region for welding connection at both pipe ends, and weld it to form a pipeline. , A complementary coating is applied to an uncoated area centered on the welded portion. However, at most 10% of the pipeline length
However, it is still not easy to carry out complementary coating on the uncoated area. That is, the coating process also requires heating of the metal material, and this is performed so that the factory coating adjacent to the uncoated region is not damaged, and the complementary coating is welded and integrated with the factory coating. The heating must be carried out as described above, and this heating involves a large cost in terms of both equipment and work. Equal supply of coating material to the inner surface of the immovable conduit is likewise costly. In order to avoid the above-mentioned difficult problem, it is also possible to form an inner surface coating pipe by connecting the resin coated from the inner surface of the flanged metal tube to the flange seating surface by bolts. Since the ratio increases in proportion to the increase, the application of the flange method to a pipe having a pipe diameter exceeding 400 mm is generally difficult to consider from the viewpoint of cost.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、金属材への
無極性樹脂被覆の適用に係る上記事情に鑑みてなされた
ものであって、被覆対象となる金属材の形状やハンドリ
ングの可否を問わずに容易に被覆施工ができ、且つ、無
極性樹脂被覆の非親水性に由来する好ましい特性を具え
た防食被覆を得ることができる被覆技術の提供を課題と
した。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances relating to the application of a non-polar resin coating to a metal material, and has been made in consideration of the shape of the metal material to be coated and the possibility of handling. It is an object of the present invention to provide a coating technique capable of easily performing coating regardless of the type and obtaining an anticorrosion coating having preferable characteristics derived from the non-hydrophilicity of the nonpolar resin coating.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決すべくな
された本発明の樹脂被覆は、金属材を防食するための樹
脂被覆であって、金属材の表面に接着して形成された反
応硬化性樹脂による厚膜の防食被覆層と、該防食被覆層
の表面に融着又は接着して形成された無極性樹脂による
薄膜の非親水化処理皮膜とを有することを特徴とする。
なお、こヽで、反応硬化性樹脂あるいは無極性樹脂と
は、該樹脂に骨材，顔料，安定材等の助剤を配合した樹
脂基被覆材料をも包含して指すものとする。図１に本発
明樹脂被覆１を例示する。図において、２は防食被覆
層、３は非親水化処理皮膜、４は鋼材である。SUMMARY OF THE INVENTION The resin coating of the present invention, which has been made to solve the above-mentioned problems, is a resin coating for preventing corrosion of a metal material, and is a reactive coating formed by bonding to a surface of a metal material. It is characterized by having a thick anticorrosive coating layer made of a conductive resin, and a non-hydrophilized thin film made of a nonpolar resin formed by fusing or adhering to the surface of the anticorrosion coating layer.
Here, the reaction curable resin or the non-polar resin includes a resin-based coating material in which an auxiliary agent such as an aggregate, a pigment, or a stabilizer is mixed with the resin. FIG. 1 illustrates the resin coating 1 of the present invention. In the drawing, reference numeral 2 denotes an anticorrosion coating layer, 3 denotes a non-hydrophilic treatment film, and 4 denotes a steel material.
【０００８】本発明樹脂被覆において防食被覆層に用い
ている、エポキシ樹脂を代表例とす反応硬化性樹脂（熱
硬化性樹脂とも呼ばれる）は、優れた酸素遮断性能を有
しており、厚膜で適用して長期防食が行える。又、全姿
勢で塗工し、常温で硬化させて厚膜を形成することが可
能である。即ち、単純でない形状の金属材や動かせない
金属材にも容易に厚膜被覆を形成できる。The reaction curable resin (also referred to as a thermosetting resin) represented by an epoxy resin, which is used as the anticorrosion coating layer in the resin coating of the present invention, has excellent oxygen barrier properties and has a large thickness. For long-term corrosion protection. Further, it is possible to form a thick film by coating in all postures and curing at room temperature. That is, a thick film coating can be easily formed even on a metal material having a simple shape or an immovable metal material.
【０００９】しかしながら、反応硬化性樹脂被覆には、
硬化反応への寄与を終えた極性基が存在しており、ポリ
エチレン被覆などの無極性樹脂被覆と異なって、貝やス
ラッジが付与しやすい。このため、海水配管の内部への
貝などの付着による輸送効率の低下、あるいは、シーバ
ースの鋼管杭への貝などの付着による海流受圧力の増大
といった問題が起りやすかった。又、上記問題に対策す
べく貝などを除去する場合、付着界面で剥がすことは難
しく、靭性のさほど大きくないエポキシ樹脂被覆等の表
層部を一緒に剥ぎ取る形を余儀なくされるという事情に
あった。更には、ポリエチレン被覆などの無極性樹脂被
覆は表面が概して平滑で、摩擦係数が小さく、管内流体
の損失水頭が小さいため、流送効率が高くなるなどの特
長を有しているが、反応硬化性樹脂については上記特長
を期待できなかった。However, the reaction curable resin coating includes:
There is a polar group that has finished contributing to the curing reaction, and unlike a non-polar resin coating such as a polyethylene coating, shells and sludge are easily applied. For this reason, problems such as a decrease in transport efficiency due to the attachment of shells and the like to the inside of the seawater pipe and an increase in the pressure of the sea current due to the attachment of shells and the like to the steel pipe piles of the sea berth were likely to occur. Also, when removing shells and the like in order to solve the above problems, it is difficult to peel off the shell at the adhesion interface, and it is necessary to peel off the surface layer such as epoxy resin coating which is not so strong as toughness. . In addition, non-polar resin coatings such as polyethylene coatings have features such as a generally smooth surface, a low coefficient of friction, and a small head loss of fluid in the pipe, which increases the efficiency of flow. The above characteristics could not be expected for the conductive resin.
【００１０】このような反応硬化性樹脂被覆の上に無極
性樹脂による非親水化処理皮膜を施した本発明構成にあ
っては、上記貝類の付着等の問題が払拭される。又、上
記処理皮膜は、薄膜で十分であり、前述のように下地を
200〜300℃に加熱しなくても被覆施工が行えるため、溶
射法のような可搬性の塗工手段によって全姿勢で施工で
きる。即ち、本発明によって、被覆対象の形状やハンド
リング可否を問わずに、無極性樹脂被覆の非親水的な特
長を具えた防食被覆を形成することが可能となり、前記
本発明の課題が解決される。[0010] In the constitution of the present invention in which a non-hydrophilic treatment film made of a non-polar resin is applied on such a reaction curable resin coating, the problem of adhesion of shellfish and the like is eliminated. In addition, the above-mentioned treatment film is sufficient as a thin film.
Since coating can be performed without heating to 200 to 300 ° C., the coating can be performed in all postures by a portable coating method such as a thermal spraying method. That is, according to the present invention, it is possible to form an anticorrosion coating having a non-hydrophilic characteristic of a non-polar resin coating, regardless of the shape of the object to be coated and whether or not it can be handled, thereby solving the problems of the present invention. .
【００１１】[0011]
【発明の実施の形態】本発明被覆の防食被覆層に充てる
反応硬化性樹脂としては、エポキシ樹脂，ポリウレタ
ン，ポリエステル（ビニルエステルを含む）を、更に
は、これらの樹脂に塗料粘度調整，被覆強化などの目的
で粉粒体状の骨材やフレーク状，繊維状の強化材を配合
したものを例示できる。中でも、スプレイ塗工して常温
で経時硬化させるだけで容易に厚膜が得られる無溶剤な
いし低溶剤型のエポキシ樹脂塗料あるいはポリウレタン
樹脂塗料が好適である。防食被覆層の膜厚は１〜５mm程
度に設定するのがよい。これは、１mm以上で数年の防食
寿命が得られるからである。又、膜厚を増すほど防食寿
命は増すが、上記傾向は５mm程度で飽和するので、５mm
を超える膜厚は不経済である。BEST MODE FOR CARRYING OUT THE INVENTION As a reaction curable resin to be applied to the anticorrosion coating layer of the coating of the present invention, epoxy resin, polyurethane, polyester (including vinyl ester) is used. For the purpose such as, for example, those in which a granular aggregate or a flake-like or fibrous reinforcing material is blended can be exemplified. Among them, a solventless or low solvent type epoxy resin paint or a polyurethane resin paint which can easily obtain a thick film simply by spray coating and curing with time at room temperature is preferable. The thickness of the anticorrosion coating layer is preferably set to about 1 to 5 mm. This is because a corrosion prevention life of several years can be obtained with 1 mm or more. Also, as the film thickness increases, the anticorrosion life increases, but the above tendency saturates at about 5 mm.
A film thickness exceeding 3 is uneconomical.
【００１２】上記防食被覆層の表面に形成する非親水化
処理皮膜に充てる無極性樹脂としては、ポリオレフィン
（ポリエチレン，ポリプロピレン，ポリブテン，ポリメ
チルペンテン等）、フッ素樹脂（ＰＴＦＥ，ＰＶＤＦ，
ＰＦＡ，ＥＴＦＥ等）を例示できる。特に、環境問題の
少ないポリオレフィンが好適である。非親水化処理皮膜
の膜厚は0.05〜0.5mm程度に設定するのがよい。これ
は、0.05mm以上で前記非汚染性（貝やスラッジが付着し
にくい）が十分発現されるからである。又、0.5mm以下
の薄膜であれば、母材の金属材を200〜300℃といった温
度に予熱せずに施工できる。また非親水化処理皮膜は、
その目的から、防食性能は重要ではなく、例えばピンホ
ール等の部分的欠陥や膜厚のバラツキ等があってもかま
わない。また仮に部分的な未被覆部があったとしても大
勢としてメリットがもたらされゝばよい。逆に、貝類の
付着し易い部分のみに本発明を適用することも可能であ
る。As the non-polar resin used for the non-hydrophilic treatment film formed on the surface of the anticorrosion coating layer, polyolefin (polyethylene, polypropylene, polybutene, polymethylpentene, etc.) and fluororesin (PTFE, PVDF,
PFA, ETFE, etc.). In particular, a polyolefin having less environmental problems is suitable. The thickness of the non-hydrophilized film is preferably set to about 0.05 to 0.5 mm. This is because at 0.05 mm or more, the above-mentioned non-staining property (shellfish and sludge hardly adhere) is sufficiently exhibited. In addition, if the thin film is 0.5 mm or less, it can be applied without preheating the base metal material to a temperature of 200 to 300 ° C. The non-hydrophilic coating is
For that purpose, the anticorrosion performance is not important. For example, there may be a partial defect such as a pinhole or a variation in film thickness. Even if there is a partial uncovered portion, it suffices if a large number of merits are brought. Conversely, it is also possible to apply the present invention only to a portion where shellfish easily adheres.
【００１３】反応硬化性樹脂による防食被覆層と、その
表面に融着又は接着された無極性樹脂による非親水化処
理皮膜の間の層間接着力は、防食被覆層の表面を粗面化
しておくと、非親水化処理皮膜に足掛りを提供するとこ
ろとなって向上する。上記粗面化は、アルミナグリット
などによるブラスチングあるいは骨材入り塗料（商品名
「ブラスノン」など）の塗膜を施して行うことができ
る。The interlayer adhesion between the anti-corrosion coating layer of the reaction-curable resin and the non-hydrophilic coating of the non-polar resin fused or adhered to the surface of the anti-corrosion coating layer roughens the surface of the anti-corrosion coating layer. And providing a foothold to the non-hydrophilized film. The surface roughening can be performed by blasting with alumina grit or the like, or applying a coating film of a coating material containing aggregate (such as “Brasnon”).
【００１４】又、非親水化処理皮膜の防食被覆層との界
面側を接着性を付与した無極性樹脂（マレイン化変性ポ
リエチレン／商品名「アドマー」など）で形成すること
により、極性基を有する防食被覆層との強い親和性を上
記皮膜に具備させて接着力を向上させることもできる。
この際、皮膜の表面側を非変性樹脂で形成した２層構成
とすることが望ましいが、被覆の非汚染性が最優先でな
い場合は、皮膜全体を変性樹脂で形成してよい。In addition, the interface side of the non-hydrophilic treatment film with the anticorrosion coating layer is formed of a non-polar resin having an adhesive property (malein-modified polyethylene / trade name “Admer”) to have a polar group. The above film can be provided with a strong affinity with the anticorrosion coating layer to improve the adhesive strength.
At this time, it is desirable to form a two-layer structure in which the surface side of the coating is formed of a non-modified resin. However, if the non-staining property of the coating is not the highest priority, the entire coating may be formed of the modified resin.
【００１５】反応硬化性樹脂による防食被覆層の表面
に、無極性樹脂による非親水化処理皮膜を積層した構成
の本発明樹脂被覆は、次のようにして形成することがで
きる。先ず、金属材の表面に、適宜、ブラスチング等の
下地処理や、化成処理，プライマー塗装などを行った
後、反応硬化性樹脂塗料を厚膜塗工する。１〜５mmとい
った厚膜塗工は、通常の塗料の塗り重ね（半硬化状態で
塗り重ねる）によって行うこともできるが、極く高粘度
に調製された塗料（商品名「ナプコバリヤー」など）を
エアレススプレーや二頭ガンなどで投射して一気に行う
のが能率的である。The resin coating of the present invention having a structure in which a non-hydrophilic treatment film made of a nonpolar resin is laminated on the surface of an anticorrosion coating layer made of a reaction-curable resin can be formed as follows. First, the surface of a metal material is appropriately subjected to a base treatment such as blasting, a chemical conversion treatment, a primer coating, and the like, and then a reaction curable resin paint is applied as a thick film. Thick film coating such as 1 to 5 mm can be performed by applying a normal paint (overcoating in a semi-cured state). However, paints with extremely high viscosity (such as "Napco Barrier") are airless. It is efficient to use a spray or two-headed gun to project at once.
【００１６】上記反応硬化性樹脂塗工層表面ヘの無極性
樹脂の塗工あるいはフィルム貼りは、上記塗工層が経時
硬化して一次硬化状態に達した段階で行うことにより、
融着あるいは接着後の層間接着力が確保される。又、必
要に応じて、上記塗工層の表面に前記粗面化処理を施
し、あるいは、化学的に作用する接着プライマー（エポ
キシプライマー，カップリング剤，イソシアネート等）
を塗布し、更には、前述のように、接着性を付与した無
極性樹脂を非親水化処理皮膜の少なくとも上記塗工層と
の界面側に用いて接着力を向上させることができる。因
に、二次硬化（完全硬化）状態まで硬化が進んだ反応硬
化性樹脂塗工層表面への直接の無極性樹脂の融着あるい
は接着は通常は困難であるため、数年間使用された反応
硬化性樹脂塗工層上への無極性樹脂の塗工は、前記粗面
化処理や、接着プライマー処理の後に行なう必要があ
る。The application of a non-polar resin or the application of a film to the surface of the reaction curable resin coating layer is performed at a stage where the coating layer is cured with time and reaches a primary cured state.
Interlayer adhesion after fusion or bonding is ensured. If necessary, the surface of the coating layer is subjected to the above-mentioned surface roughening treatment, or a chemically acting adhesive primer (epoxy primer, coupling agent, isocyanate, etc.)
Further, as described above, the adhesive force can be improved by using a nonpolar resin having an adhesive property at least on the interface side with the coating layer of the non-hydrophilic treatment film. However, it is usually difficult to fuse or bond a non-polar resin directly to the surface of a reaction-curable resin coating layer that has been cured to a secondary cured (completely cured) state. The application of the nonpolar resin onto the curable resin coating layer needs to be performed after the surface roughening treatment or the adhesive primer treatment.
【００１７】無極性樹脂は、溶射法，粉体融着法（たと
えば樹脂粉体のスラリーを塗布し乾燥したのち遠赤外線
照射などにより表層加熱して成膜・融着させる），２相
塗料塗工法（無極性樹脂と反応硬化性樹脂の混合塗料を
塗工し、界面張力差によって自由表面側に無極性樹脂の
薄膜を分層形成させる）によって塗工し、あるいは、コ
ロナ処理や酸化剤によって片面（接着させる側）を極性
化した無極性樹脂フィルムを接着剤で貼りつけることに
よって皮膜施工することができる。The non-polar resin is sprayed or powder-fused (for example, a slurry of resin powder is applied and dried, then heated to the surface layer by irradiation with far infrared rays or the like to form a film and fused), or a two-phase paint is applied. Coating method (coating a mixture of non-polar resin and reactive curable resin and forming a thin layer of non-polar resin on the free surface due to the difference in interfacial tension), or by corona treatment or oxidizing agent A film can be formed by attaching a nonpolar resin film having one surface (the side to be bonded) that has been polarized with an adhesive.
【００１８】このあと、一次硬化状態まで達している反
応硬化性樹脂塗工層を更なる経時により二次硬化させ
て、本発明所期の防食被覆層に仕上げる。なお、上記一
次硬化，二次硬化は、常温で行ってよいが、数十℃レベ
ルの加熱により促進してもよい。又、上記加熱を無極性
樹脂の適用直前から行って、無極性樹脂のより平滑な成
膜を図ってもよい。Thereafter, the reaction-curable resin coating layer that has reached the primary curing state is secondarily cured with further elapse of time to complete the intended anticorrosion coating layer of the present invention. The primary curing and the secondary curing may be performed at room temperature, but may be accelerated by heating at several tens of degrees Celsius. Further, the above-mentioned heating may be performed immediately before the application of the nonpolar resin to achieve a smoother film formation of the nonpolar resin.
【００１９】本発明樹脂被覆の形成方法は上述の通りで
あって、厚膜被覆層による優れた長期防食性と非親水化
処理皮膜による表面非汚染性等とを兼ね備えた本発明樹
脂被覆を、単純でない形状の被覆対象（曲り管内面な
ど）や動かせない被覆対象（管路内面など）にも容易に
形成することができる。The method for forming the resin coating of the present invention is as described above, and the resin coating of the present invention having both excellent long-term corrosion protection by a thick film coating layer and non-staining properties by a non-hydrophilic coating film is used. It can be easily formed on a coating object having a non-simple shape (such as a curved pipe inner surface) or an immovable coating object (such as a pipe inner surface).
【００２０】こヽで、被覆対象が無極性樹脂による未完
樹脂被覆（たとえば、管路内面に無極性樹脂による工場
施工厚膜被覆が既に存在するが、溶接接続部を中心とす
る小区間が未被覆のまゝ残されている）の未被覆領域で
ある場合、該未被覆領域に本発明樹脂被覆を形成するこ
とにより、被覆の補完が極めて有利に行える。これは、
上記補完被覆の表層部の非親水化処理皮膜（無極性樹
脂）と、未被覆領域に隣接する工場施工被覆（同じく無
極性樹脂）の表層部とが、相互に溶接された態様の補完
が行えるからである。Here, the coating target is an incomplete resin coating with a non-polar resin (for example, a factory-installed thick-film coating with a non-polar resin already exists on the pipe inner surface, but a small section centering on the welded joint is not yet formed. In the case of an uncoated region (remaining to be covered), the formation of the resin coating of the present invention in the uncoated region makes it possible to complement the coating very advantageously. this is,
It is possible to complement the aspect in which the non-hydrophilic coating film (non-polar resin) of the surface layer portion of the complementary coating and the surface layer portion of the factory construction coating (also non-polar resin) adjacent to the uncoated region are mutually welded. Because.
【００２１】即ち、既存工場施工被覆と補完被覆とが表
層部において連続一体化された上記態様にあっては、反
応硬化性樹脂の表面ないしは該樹脂と無極性樹脂との界
面が環境に露呈されないため、貝などの付着の足掛りが
なくなるとともに上記界面の劣化が長年に亘って防止さ
れる。図２に上記本発明樹脂被覆補完方法を適用して補
完した被覆系を例示する。図において、1′は本発明樹
脂被覆仕様の補完被覆、５は無極性樹脂による工場施工
被覆、６は無極性樹脂相互間の溶接部である。In other words, in the above-described embodiment in which the existing factory coating and the complementary coating are continuously integrated at the surface layer, the surface of the reaction-curable resin or the interface between the resin and the nonpolar resin is not exposed to the environment. Therefore, the adhesion of the shellfish and the like is prevented, and the deterioration of the interface is prevented for many years. FIG. 2 illustrates a coating system complemented by applying the resin coating complementing method of the present invention. In the drawing, 1 'is a complementary coating of the resin coating specification of the present invention, 5 is a factory-installed coating made of a nonpolar resin, and 6 is a weld between nonpolar resins.
【００２２】上記被覆の表層部が相互に溶接された態様
は、溶射法や粉体融着法による非親水化処理皮膜の塗工
に際して既存の工場施工被覆の被溶接部を100℃前後に
予熱しておくことにより実現できる。又、フィルム貼り
に際し、未被覆領域より大きい寸法のフィルムを用い
て、既存被覆と重なる部分をホットメルト型接着剤（Ｅ
ＡＡ系，ＥＥＡ系，ＥＶＡ系など）で接着することによ
り、あるいは、前記補間被覆と工場被覆の表層部同志
を、ポータブル押出機（ドイツムンシュ社製「ＤＭ−I
I」など）や熱風溶接機を用いた溶加材溶接により実現
できる。この場合も既存被覆の被溶接部の予熱が有効で
ある。又、いずれの手法においても、サンダー研磨など
による被溶接部表面の活性化ないし粗面化が有効であ
る。更には、上記フィルム貼りを、片面にホットメルト
型接着剤がプレコートされたフィルムを用いて行って、
補完被覆の防食被覆層との間の接着もホットメルト型接
着剤により行うようにしてもよい。The mode in which the surface layers of the above-mentioned coatings are welded to each other is that when the non-hydrophilic coating is applied by a thermal spraying method or a powder fusion method, a portion to be welded of an existing factory-applied coating is preheated to about 100 ° C. It can be realized by doing. Also, when attaching the film, use a film having a size larger than the uncoated area, and use a hot-melt adhesive (E
AA-type, EEA-type, EVA-type, etc.), or the interpolating coating and the surface layer of the factory coating are connected to each other by a portable extruder (“DM-I” manufactured by Munch Germany).
I ") and filler metal welding using a hot-air welding machine. In this case as well, preheating the welded portion of the existing coating is effective. In any method, activation or roughening of the surface of the welded portion by sander polishing or the like is effective. Furthermore, the above-mentioned film sticking was performed using a film in which a hot melt type adhesive was pre-coated on one side,
The adhesion between the complementary coating and the anticorrosion coating layer may also be performed by a hot melt type adhesive.
【００２３】（実施例）厚さ９mmの軟鋼板に表１に記載
の被覆を施して、防食性能試験及び海生物付着試験に供
した。 ＜反応硬化性樹脂層＞ ・被覆材料 ：ナプコバリヤー2M／発売元：関西ペイ
ント（株），エポキシ樹脂系，ポリアミド硬化型，不揮
発分：97％ ・塗 工 法 ：二頭ガンによりスプレイ ・一次硬化条件：室温（10〜20℃）×24hr ・二次硬化条件：下記無極性樹脂の施工の際の一時的な
昇温（90℃）を経たのち室温で７日間経時 ＜無極性樹脂層＞ ・被覆材料 ：内層：アドマーNR106（30μm厚さ）／
発売元：三井化学（株）：外層：ネオゼックス（残り厚
さ）／発売元：三井化学（株） ・塗工法 ：フレーム溶射法（グリットブラスチン
グにより粗面化した対象面を遠赤外線ヒーターで50℃に
予熱したのち実施） ＜防食性能試験＞ ・供試体仕様 ：80×80（mm），片面被覆 ・試 験 法 ：温度差耐水試験／試験液：水道水，温
度差：50℃−25℃，３ヶ月→６ヶ月の間の接着力低下率
を評価。 ＜海生物付着試験＞ ・供試体仕様 ：300×300（mm），全面被覆 ・試 験 法 ：和歌山県白浜町古賀浦近海の水深１ｍ
の海中に５月〜８月の15ヶ月に亘って浸漬，付着面積率
と剥離性を評価。 ＜試験結果＞表１に併記する。表１に記した試験結果に
見る通り、被覆対象の形状や態様を問わずに施工できる
本発明例被覆が長期防食性と非汚染性を兼備しているこ
とを確認できた。(Example) A mild steel sheet having a thickness of 9 mm was coated with a coating as shown in Table 1 and subjected to a corrosion prevention performance test and a sea organism adhesion test. <Reaction curable resin layer>-Coating material: Napco Barrier 2M / Distributor: Kansai Paint Co., Ltd., epoxy resin, polyamide curable type, nonvolatile content: 97%-Coating method: spraying with a two-head gun-Primary curing conditions : Room temperature (10 to 20 ° C) × 24hr ・ Secondary curing condition: Temporary temperature rise (90 ° C) when applying the following nonpolar resin, then aged at room temperature for 7 days <Nonpolar resin layer> ・ Coating Material: Inner layer: Admer NR106 (30μm thickness) /
Publisher: Mitsui Chemicals, Inc .: Outer layer: Neoxex (remaining thickness) / Publisher: Mitsui Chemicals, Inc.-Coating method: Flame spraying method (50 ° C with a far-infrared heater on the target surface roughened by grit blasting) <Anti-corrosion performance test>-Specimen specification: 80 x 80 (mm), single-sided coating-Test method: Temperature difference water resistance test / Test solution: tap water, temperature difference: 50 ° C-25 ° C, The rate of decrease in adhesive strength between 3 months and 6 months was evaluated. <Sea organism adhesion test> ・ Specimen specification: 300 × 300 (mm), full surface coating ・ Test method: 1 m depth of water near Kogaura near Shirahama town, Wakayama prefecture
It was immersed in the sea for 15 months from May to August, and the adhesion area ratio and peelability were evaluated. <Test results> Also shown in Table 1. As can be seen from the test results shown in Table 1, it was confirmed that the coating of the present invention, which can be applied irrespective of the shape and mode of the object to be coated, has both long-term corrosion protection and non-staining properties.
【００２４】[0024]
【表１】 [Table 1]
【００２５】[0025]
【発明の効果】本発明樹脂被覆は、上述のように、反応
硬化性樹脂による厚膜の防食被覆層の表面に、更に、無
極性樹脂による薄膜の非親水化処理皮膜を一体的に積層
した被覆構成を特徴とする。上記被覆は、複雑な形状の
被覆対象（曲り管内面など）や動かせない被覆対象（敷
設済管路の内面など）にも容易に適用でき、しかも、上
記適用が困難な通常の無極性樹脂厚膜被覆でしか得られ
ない非親水的特性（貝が付着しにくい等）を有する。As described above, the resin coating of the present invention is formed by integrally laminating a thin non-hydrophilic coating made of a nonpolar resin on the surface of a thick anticorrosive coating made of a reaction curable resin. It features a coating configuration. The above coating can be easily applied to a coating object having a complicated shape (such as an inner surface of a bent pipe) or an immovable coating object (such as an inner surface of a laid pipe). It has non-hydrophilic properties that can only be obtained by membrane coating (such as the difficulty of shellfish sticking).
【００２６】防食被覆の価値は、先ずは長期防食性にあ
るが、被覆施工の経済効果を考えれば、施工後の保守の
負荷が僅少で済むことがこれに次ぐ価値である。本発明
樹脂被覆は、上記２様の価値を兼ね備えており、前記種
々の被覆対象への施工適性も含めて、今後の防食施策に
不可欠な被覆と云えるものである。The value of the anticorrosion coating is at first a long-term anticorrosion property. However, considering the economic effect of the coating operation, the second most important value is that the maintenance load after the application is small. The resin coating of the present invention has the above two values, and can be said to be an indispensable coating for future anticorrosion measures, including the suitability for application to the various coating targets.
【図１】本発明樹脂被覆例の部分断面図。FIG. 1 is a partial cross-sectional view of a resin coating example of the present invention.
【図２】本発明樹脂被覆による補完被覆を施した例の部
分断面図。FIG. 2 is a partial cross-sectional view of an example in which a complementary coating is applied by the resin coating of the present invention.
１ 樹脂被覆 ２ 防食被覆層 ３ 非親水処理皮膜 ４ 鋼材 Reference Signs List 1 resin coating 2 anticorrosion coating layer 3 non-hydrophilic coating 4 steel
【手続補正書】[Procedure amendment]
【提出日】平成１１年７月１３日（１９９９．７．１
３）[Submission date] July 13, 1999 (1999.7.1)
3)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Correction target item name] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【特許請求の範囲】[Claims]
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ０５Ｄ 7/22 Ｂ０５Ｄ 7/22 Ａ 7/24 ３０２ 7/24 ３０２Ｔ ３０２Ｇ Ｃ０９Ｄ 5/08 Ｃ０９Ｄ 5/08 123/02 123/02 163/00 163/00 175/04 175/04 201/00 201/00 Ｆ１６Ｌ 58/10 Ｆ１６Ｌ 58/10 (72)発明者 検見崎 千浩 神奈川県川崎市川崎区殿町２丁目17番８号 第一高周波工業株式会社内 (72)発明者 岩本 盛男 神奈川県川崎市川崎区殿町２丁目17番８号 第一高周波工業株式会社内 Ｆターム(参考） 3H024 EA01 EB01 EC02 EC04 ED04 ED05 ED07 EE02 4D075 AA17 AE03 BB02X CA33 DA13 DB01 DC06 DC16 EB33 EB38 4F100 AB01A AB05 AK01B AK01C AK07C AK51B AK53B BA03 BA07 BA10A BA10C BA44 BA44B DB16 DB16B DD07B EC032 EC182 EG002 EH112 EH462 EH562 EJ082 EJ99B EJ992 GB51 JA20B JA20C JB02 JB02B JB06C JB13B JL01 JL06 JM02C 4J038 CB021 CB081 CB121 CD091 CD111 CD121 CF011 DB001 DD001 DG001 NA03 NA07 PA01 PA14 PB06 PC02 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B05D 7/22 B05D 7/22 A 7/24 302 7/24 302T 302G C09D 5/08 C09D 5/08 123 / 02 123/02 163/00 163/00 175/04 175/04 201/00 201/00 F16L 58/10 F16L 58/10 (72) Inventor Chihiro Kemizaki 2--17 Tonomachi, Kawasaki-ku, Kawasaki-ku, Kawasaki-shi, Kanagawa No. 8 Inside Daiichi Kousaku Kogyo Co., Ltd. (72) Inventor Morio Iwamoto 2-17-8 Tonomachi, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture 4D075 AA17 AE03 BB02X CA33 DA13 DB01 DC06 DC16 EB33 EB38 4F100 AB01A AB05 AK01B AK01C AK07C AK51B AK53B BA03 BA07 BA10A BA10C BA44 BA44B DB16 DB16B DD07B EC032 EC182 EG002 EH112 EJ08E562E562H JA20B JA20C JB02 JB02B JB06C JB13B JL01 JL06 JM02C 4J038 CB021 CB081 CB121 CD091 CD111 CD121 CF011 DB001 DD001 DG001 NA03 NA07 PA01 PA14 PB06 PC02
Claims (7)
て、金属材の表面に接着して形成された反応硬化性樹脂
による厚膜の防食被覆層と、該防食被覆層の表面に融着
又は接着して形成された無極性樹脂による薄膜の非親水
化処理皮膜とを有することを特徴とする樹脂被覆。The present invention relates to a resin coating for preventing corrosion of a metal material, wherein a thick film corrosion protection coating layer made of a reactive curable resin formed by bonding to a surface of the metal material, and a fusion coating on the surface of the corrosion protection coating layer. A non-hydrophilic treatment film of a non-polar resin formed by adhesion or adhesion.
ウレタンによって１〜５mm厚さに形成し、前記非親水化
処理皮膜をポリオレフィンによって0.05〜0.5mm厚さに
形成した、請求項１に記載の樹脂被覆。2. The resin according to claim 1, wherein said anticorrosion coating layer is formed of an epoxy resin or polyurethane to a thickness of 1 to 5 mm, and said non-hydrophilic coating is formed of a polyolefin to a thickness of 0.05 to 0.5 mm. Coating.
は骨材入り塗膜により粗面化されて、前記非親水化処理
皮膜に足掛りを提供している、請求項１又は２に記載の
樹脂被覆。3. The resin according to claim 1, wherein the surface of the anticorrosion coating layer is roughened by blasting or an aggregate-containing coating film to provide a foothold for the non-hydrophilic coating film. Coating.
被覆層との界面側を、接着性を付与した無極性樹脂で形
成した、請求項１〜３のいずれかに記載の樹脂被覆。4. The resin coating according to claim 1, wherein at least the interface side of the non-hydrophilized coating with the anticorrosion coating layer is formed of a nonpolar resin having an adhesive property.
を形成し、一次硬化状態まで硬化を進め更に必要に応じ
て粗面化した該塗工層の表面に、無極性樹脂を塗工又は
フィルム貼りして前記非親水化処理皮膜を形成し、この
あと、上記反応硬化性樹脂の塗工層を二次硬化させて前
記防食被覆層に仕上げることを特徴とする、請求項１〜
４のいずれかに記載の樹脂被覆の形成方法。5. A coating layer of a reaction-curable resin is formed on the surface of a metal material, and the non-polar resin is applied to the surface of the coating layer which has been cured to a primary curing state and further roughened if necessary. 2. The method according to claim 1, wherein the non-hydrophilic treatment film is formed by coating or applying a film, and thereafter, the coating layer of the reaction curable resin is secondarily cured to finish the anticorrosion coating layer. ~
5. The method for forming a resin coating according to any one of 4.
水化処理皮膜を形成する、請求項５に記載の樹脂被覆の
形成方法。6. The method for forming a resin coating according to claim 5, wherein a non-polar resin is applied by a thermal spraying method to form the non-hydrophilic coating.
残して形成された無極性樹脂による未完樹脂被覆を、上
記未被覆領域に樹脂被覆を形成して補完する方法であっ
て、上記未被覆領域に請求項４又は５に記載の方法を適
用して、請求項１〜４のいずれかに記載の樹脂被覆を、
その表層部の前記非親水化処理皮膜と上記未被覆領域に
隣接する既存の樹脂被覆の表層部とが相互に溶接された
態様に形成することを特徴とする樹脂被覆の補完方法。7. A method of complementing an incomplete resin coating with a nonpolar resin formed on a surface of a metal material by partially leaving an uncoated region by forming a resin coating on the uncoated region. Applying the method according to claim 4 or 5 to the uncoated region to apply the resin coating according to any one of claims 1 to 4,
A method for complementing a resin coating, wherein the non-hydrophilized film on the surface layer and the surface layer of an existing resin coating adjacent to the uncoated region are formed in a mutually welded manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19593899A JP4293683B2 (en) | 1999-07-09 | 1999-07-09 | How to complement resin coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19593899A JP4293683B2 (en) | 1999-07-09 | 1999-07-09 | How to complement resin coating |
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| Publication Number | Publication Date |
|---|---|
| JP2001018325A true JP2001018325A (en) | 2001-01-23 |
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|---|---|---|---|
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| Country | Link |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106085218A (en) * | 2016-08-17 | 2016-11-09 | 安徽红桥金属制造有限公司 | A kind of high-efficiency environment friendly compound closure agent |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107790357A (en) * | 2017-10-30 | 2018-03-13 | 安徽博古特机电科技有限公司 | A kind of spraying coating process of compressor case protective coating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106085218A (en) * | 2016-08-17 | 2016-11-09 | 安徽红桥金属制造有限公司 | A kind of high-efficiency environment friendly compound closure agent |
| CN106085218B (en) * | 2016-08-17 | 2018-05-04 | 安徽红桥金属制造有限公司 | A kind of high-efficiency environment friendly compound closure agent |
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| Publication number | Publication date |
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| JP4293683B2 (en) | 2009-07-08 |
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