JPS61283381A - Corrosion-proof process for environmental structure in water - Google Patents
Corrosion-proof process for environmental structure in waterInfo
- Publication number
- JPS61283381A JPS61283381A JP12436185A JP12436185A JPS61283381A JP S61283381 A JPS61283381 A JP S61283381A JP 12436185 A JP12436185 A JP 12436185A JP 12436185 A JP12436185 A JP 12436185A JP S61283381 A JPS61283381 A JP S61283381A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- water
- corrosion
- coating
- barrier 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.)
- Pending
Links
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- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は接水環境構造物の防食方法に関し、特に、水、
海水などで乾湿交番を受ける構造物、水、海水などに浸
っている構造物の防食方法に関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for preventing corrosion of structures in a water-contact environment, and in particular,
This article relates to corrosion protection methods for structures subjected to dry-wet cycles in seawater, etc., and structures immersed in water, seawater, etc.
(従来の技術)
従来、水や海水を対象とする構造物の金属面には、第3
図に示すような被覆が防食目的の友め施工されている。(Conventional technology) Conventionally, metal surfaces of structures that are exposed to water or seawater have a third
A coating as shown in the figure is installed for corrosion prevention purposes.
第3図において、金属素地1は、さび落し後にM根糸あ
るいは無機系材料の被覆層2があり、腐食環境全遮断し
ている。この被覆層2は防食耐久寿命から薄いもので2
00μ、厚いものでは5. OOOμに及んでいる。In FIG. 3, the metal base 1 has a coating layer 2 of M roots or an inorganic material after rust removal, which completely blocks out the corrosive environment. This coating layer 2 is thin due to its anti-corrosion durability.
00μ, 5 for thick ones. It extends to OOOμ.
しかしながら、このような塗装では下記のような欠点が
あった。However, this type of coating has the following drawbacks.
(1)腐食環境遮断の被覆材は、経年とともに水。(1) The coating material that blocks corrosive environments will absorb water over time.
塩分、液中の溶存酸素など腐食因子となる成分が浸透し
、金属面に達し次のち、被覆材の欠陥として、ふくn、
さび2剥nの現象となる。Corrosion-causing components such as salt and dissolved oxygen in the liquid penetrate and reach the metal surface, which then causes defects in the coating material.
This is a phenomenon of rust peeling off.
(2) 欠陥が著るしくなると、金属面の腐食が進行
する九め、被覆材の補修あるいは新設時同様の被覆工事
が必要となる。(2) If the defects become serious, corrosion of the metal surface will progress, and the covering material will need to be repaired or the same covering work as when newly installed is required.
(3)修繕工事は新設時の工事と異なり、工事は難航し
、施工費も新設時より高額となり、しかも工事の品質は
低下するなど問題が多かつ次O
(発明が解決しようとする問題点)
本発明は接水m*構造物の被覆材の耐久寿命を延ばす、
あるいはメインテナンスフリーを意図し、長期的には防
食コス)1低減しうる防食方法を提供しようとするもの
である。(3) Repair work is different from work for new construction; the construction is difficult, construction costs are higher than for new construction, and the quality of the construction deteriorates. ) The present invention extends the durable life of coating materials of water-contact m* structures,
Alternatively, it is intended to be maintenance-free and to provide a corrosion prevention method that can reduce corrosion prevention costs by 1 in the long term.
(問題点を解決するための手段)
本発明は、被覆層の表層およびま友は中間層に水、塩分
など腐食性因子が浸透しない、あるいは浸透がしにくい
バリヤ*’を設け、このバリヤ層によって、腐食性因子
が金属素地に達する速度は著るしく阻害させて、被覆材
の耐久寿命を長くしようとするものであって、このバリ
ア層として四フッ化エチレンとエチレンの共重合体の水
素原子2個を水酸基で置換した変性フッ素樹脂塗料液と
イソシアネート液との混合物を塗布することによって得
られるmg’を選択したことを特徴とするものである。(Means for Solving the Problems) The present invention provides a barrier*' that prevents or makes it difficult for corrosive factors such as water and salt to penetrate into the surface layer and intermediate layer of the coating layer. This is intended to significantly inhibit the rate at which corrosive agents reach the metal substrate, thereby prolonging the durable life of the coating material. It is characterized in that mg' obtained by applying a mixture of a modified fluororesin coating liquid in which two atoms are replaced with hydroxyl groups and an isocyanate liquid is selected.
す彦わち本発明は、接水環境構造物の表面に樹脂系被覆
層と、四フッ化エチレンとエチレンの共重合体の水素原
子2個を水酸基で置換し膜室性フッ素樹脂塗料液とイソ
シアネート液との混合物t−m布することによって得ら
れるバリヤ層と61重ねることt−特徴とする接水環境
構造物の防食方法である。In other words, the present invention provides a resin coating layer on the surface of a structure in a water-contact environment, and a film-like fluororesin coating liquid in which two hydrogen atoms of a copolymer of tetrafluoroethylene and ethylene are replaced with hydroxyl groups. A method for preventing corrosion of a structure in a water-contact environment is characterized by overlapping a barrier layer obtained by coating a mixture with an isocyanate liquid.
本発明は船舶、海洋構造物、水門、淡水化プラントなど
接水構造物に施工するライニング又はコーティング工事
に有利に適用することができる。The present invention can be advantageously applied to lining or coating work performed on structures in contact with water such as ships, offshore structures, water gates, and desalination plants.
以下、本発明の実施例全第1図及び第2図に従って詳述
する。Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 and 2.
第1図は従来の被覆層の表面にバリヤ層金設は九実施例
の断面模式図、第2図は被覆層の中間にバリヤ層を設は
几実施例の断面模式図である。FIG. 1 is a schematic cross-sectional view of nine embodiments in which a barrier layer is provided on the surface of a conventional coating layer, and FIG. 2 is a schematic cross-sectional view of an embodiment in which a barrier layer is provided in the middle of the coating layer.
図は、金属素地1の接水側に設けた被覆層2の表面のバ
リヤ層3あるいは被覆層2と被覆層2の中間に設けtバ
リヤ層3の断■を示している。The figure shows a section of the barrier layer 3 on the surface of the coating layer 2 provided on the water-contacting side of the metal base 1 or the barrier layer 3 provided between the coating layers 2.
金属素地1は、鋼板、ステンレス鋼あるいは銅合金など
、金属であれば種類全問わない。The metal base 1 may be any type of metal, such as a steel plate, stainless steel, or copper alloy.
被覆層2はコールタールエポキシ塗膜、エボキン樹脂塗
膜、不飽和ポリエステル樹脂塗膜あるいはこnら311
のガラスフレーク入りライニング材、レジンモルタルな
ど単層膜が200μ乃至s、 o o oμの範囲が適
用できる。The coating layer 2 is a coal tar epoxy coating, an Evokin resin coating, an unsaturated polyester resin coating, or these 311
Single-layer films such as glass flake-containing lining materials and resin mortar can be applied in the range of 200μ to 00μ.
バリヤ層3は、常温硬化型7ツ累樹脂系塗膜で20〜4
0μの範囲で適用し九ものである。Barrier layer 3 is a room-temperature curing 7-layer resin coating film with 20 to 4
There are nine types applicable in the range of 0μ.
20μ以下ではピンホールが多くなって効果が薄く、4
0重以上では塗装回数の増加とコスト面から有利でない
。If it is less than 20μ, there will be many pinholes and the effect will be weak.
A layer of 0 or more is not advantageous in terms of increased number of coatings and cost.
この常温硬化型フッ素樹脂系塗膜は、四7ツ化エチレン
とエチレンの共重合体の水素原子2個を水酸基で置換し
た変性フッ累樹脂に顔料。This room-temperature-curing fluororesin coating film is made from a modified fluororesin in which two hydrogen atoms of a copolymer of tetra7tethylene and ethylene are replaced with hydroxyl groups, and pigments.
溶剤を加えて塗料化し次液にイソシアネート液全混合し
、この混合液を塗装し、下記のような反応式によって硬
化させた膜である。The film is made by adding a solvent to form a coating, then mixing the entire isocyanate solution with the next solution, coating this mixed solution, and curing according to the reaction formula shown below.
R−N=O−0+R’OH→R−NH−0−OR’変性
フッ素樹脂全塗料化し友ものとしては、旭硝子(株)製
の常温硬化型フッ素樹脂金塗料化し友人日本塗料(株)
製のレフロンが市販されている。R-N=O-0+R'OH→R-NH-0-OR' A friend that has completely changed to a modified fluororesin paint is a cold-curing fluororesin gold paint made by Asahi Glass Co., Ltd. and a friend made by Nippon Toyo Co., Ltd.
Refron made by Manufacturer is commercially available.
イソシアネートとしては、ポリイソシアネートのうち、
Desmodur−Rとして知らnているトリフェニル
メタントリイソシアネートの20%メチレンクロライド
溶液ま九はDesmodur−THと 。As isocyanates, among polyisocyanates,
Desmodur-TH is a 20% methylene chloride solution of triphenylmethane triisocyanate, known as Desmodur-R.
して知らnている末端にイソシアネート基ヲ有するポリ
ウレタンしaHIcz a”;=< aH2oaoNm
−○cHs)s3の50%酢酸エチル溶液などが使用で
きる。Polyurethane having an isocyanate group at the end known as aHIcz a”;=< aH2oaoNm
A 50% ethyl acetate solution of -○cHs)s3 can be used.
第1表は海水中での重防食塗料でおる各種の塗料膜と常
温硬化ふっ素塗料膜の水蒸気透過量t% JlS法によ
って比較し′fcものである。Table 1 compares the amount of water vapor permeation (t%) of various heavy-duty anti-corrosion paint films in seawater and fluorine paint films cured at room temperature using the JIS method.
水蒸気透過係数(ト)について重防食の標準塗料である
タールエポキシ塗料膜を1として水蒸気透過比で示し九
〇
第 1 表
S:面積
に=tw(a、S測定条件が一定)
常温硬化ふっ素塗料膜はタールエポキシ膜の1750、
ポリエステルガラスフレーク膜の約178である。第1
!5!の水蒸気透過比が即防食寿命との判断は難しいが
、水蒸気を透過しにくいことは、水の浸透に対しバリヤ
的効果となり、耐久期間の延命となる。従って、薄い換
金バリヤとして利用することによって、省資源的防食が
可能となる。Regarding the water vapor permeability coefficient (g), the tar epoxy paint film, which is a standard paint for heavy corrosion protection, is assumed to be 1, and the water vapor permeability ratio is shown in Table 90. The membrane is tar epoxy membrane 1750,
178 of the polyester glass flake membrane. 1st
! 5! Although it is difficult to judge that the water vapor permeability ratio of 2 is the immediate corrosion protection life, the fact that it is difficult for water vapor to permeate acts as a barrier against water penetration and extends the durability period. Therefore, by using it as a thin cash barrier, it becomes possible to prevent corrosion while saving resources.
(実施例)
第2表は、TF!(タールエポキシ)塗料およびms(
ポリエステル)フレーク塗料にF(常温硬化7ツ累)塗
料をバリヤとした塗装仕様の実験データである。(Example) Table 2 shows TF! (tar epoxy) paint and ms (
This is experimental data for coating specifications using F (7-layer polyester) flake paint as a barrier.
第 2 表 歳 TE:タールエボキシ、 8日:ボリエス゛チル。Table 2 age TE: Tar epoxy, 8th: Bories chill.
F=常温硬化ふっ素樹脂
A1および煮4はブランクの塗装膜、J162および扁
5は表層にF塗料をバリヤとして塗装、/I63および
A6はTi1t塗料やに87レーク塗料の眉間に?塗料
をバリヤとして利用し、いずnも耐久寿命が著るしく延
長し几。F = Room temperature curing fluororesin A1 and Ni4 are blank paint films, J162 and Bi5 are painted with F paint on the surface layer as a barrier, /I63 and A6 are Ti1t paint and 87 lake paint between the eyebrows? By using the paint as a barrier, the durable life of the product is significantly extended.
第1図及び第2図に示した実施例ではバリヤ層を被覆層
の表面及び中間にそnぞn形成した例を示し九が、こt
は当然のことながら被覆層の表面及び中間の両刀に形成
してもよい。さらにバリヤ層上最下層とし、その上t−
i覆層としてもよい。The embodiment shown in FIGS. 1 and 2 shows an example in which a barrier layer is formed on the surface and in the middle of the coating layer.
Of course, they may be formed on the surface of the coating layer and on both sides of the coating layer. Further, the lowermost layer on the barrier layer, and the top layer t-
It may also be used as an i-covering layer.
第1図、第2図は本発明の実施例の断面模式図、第3図
は従来の防食塗装の断面模式図である。
復代理人 内 1) 明
復代理人 萩 原 亮 −
復代理人 安 西 篤 夫1 and 2 are schematic cross-sectional views of an embodiment of the present invention, and FIG. 3 is a schematic cross-sectional view of a conventional anticorrosive coating. Sub-Agents 1) Meifuku Agent Ryo Hagiwara − Sub-Agent Atsuo Anzai
Claims (1)
レンとエチレンの共重合体の水素原子2個を水酸基で置
換した変性フッ素樹脂塗料液とイソシアネート液との混
合物を塗布することによつて得られるバリヤ層とを塗り
重ねることを特徴とする接水環境構造物の防食方法。By applying a resin coating layer and a mixture of a modified fluororesin coating liquid in which two hydrogen atoms of a copolymer of tetrafluoroethylene and ethylene are replaced with hydroxyl groups and an isocyanate liquid to the surface of a structure in a water-contact environment. A corrosion protection method for structures in water-contact environments, characterized by coating the resulting barrier layer over and over again.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12436185A JPS61283381A (en) | 1985-06-10 | 1985-06-10 | Corrosion-proof process for environmental structure in water |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12436185A JPS61283381A (en) | 1985-06-10 | 1985-06-10 | Corrosion-proof process for environmental structure in water |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61283381A true JPS61283381A (en) | 1986-12-13 |
Family
ID=14883495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12436185A Pending JPS61283381A (en) | 1985-06-10 | 1985-06-10 | Corrosion-proof process for environmental structure in water |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61283381A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013027828A (en) * | 2011-07-29 | 2013-02-07 | Nippon Telegr & Teleph Corp <Ntt> | Coated film and coating material |
CN106330012A (en) * | 2016-08-31 | 2017-01-11 | 无锡双能达科技有限公司 | Improved aerator |
JP2020097777A (en) * | 2018-10-30 | 2020-06-25 | 株式会社四国総合研究所 | Coating material for rusty surface, coating method to rusty surface steel material using the same, and coating steel material |
CN113418746A (en) * | 2021-06-29 | 2021-09-21 | 北京市永康药业有限公司 | Medicine detecting and sampling device |
-
1985
- 1985-06-10 JP JP12436185A patent/JPS61283381A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013027828A (en) * | 2011-07-29 | 2013-02-07 | Nippon Telegr & Teleph Corp <Ntt> | Coated film and coating material |
CN106330012A (en) * | 2016-08-31 | 2017-01-11 | 无锡双能达科技有限公司 | Improved aerator |
JP2020097777A (en) * | 2018-10-30 | 2020-06-25 | 株式会社四国総合研究所 | Coating material for rusty surface, coating method to rusty surface steel material using the same, and coating steel material |
CN113418746A (en) * | 2021-06-29 | 2021-09-21 | 北京市永康药业有限公司 | Medicine detecting and sampling device |
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