JPS6023038A - Outer-surface powdered body epoxy resin coated steel pipe having excellent anticathode release characteristic - Google Patents
Outer-surface powdered body epoxy resin coated steel pipe having excellent anticathode release characteristicInfo
- Publication number
- JPS6023038A JPS6023038A JP13092383A JP13092383A JPS6023038A JP S6023038 A JPS6023038 A JP S6023038A JP 13092383 A JP13092383 A JP 13092383A JP 13092383 A JP13092383 A JP 13092383A JP S6023038 A JPS6023038 A JP S6023038A
- Authority
- JP
- Japan
- Prior art keywords
- epoxy resin
- steel pipe
- anticathode
- coated steel
- resin coated
- 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
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は、耐陰極剥離性に優れた外面粉体エポキシ樹
脂被覆化性に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an outer powder epoxy resin coating with excellent cathodic peeling resistance.
タ１面粉体エポキシ樹脂被珪鍋償は、そのイリコ用温度
範囲が広いことから、近年１石油、ガス輸送月１パイプ
ラインに使用されてきている。このようなパイプライン
は、−置敷３′、゛、されると大？十年間使用されるも
のであるため防食が重要なｉ！Ｉ！ Ｌ’ｆｘであり、
通常プラスブック六とによる外面被覆の他に重色防食を
併ＪＴＩ ｌ、ている。ところが、この」、気防食を行
うと、外面ｔ、ｉ’ （、１にピンホール等の■通損傷
部がある場合、この１′Ｊ通損傷部の州１１Ｊが陰極と
なｐ％トノノ食電流によって付着水分が電気分力金を起
し、生成する水素とアルカリによって、塗膜が剥離する
いわゆる陰棹剥ｒ；ｔが生ずる欠点がある。In recent years, single-sided powder epoxy resin-covered silicon pots have been used in oil and gas transportation pipelines per month because of their wide temperature range. Is such a pipeline large enough to be installed? Corrosion prevention is important because it will be used for 10 years! I! L'fx,
In addition to the normal outer coating with Plus Book 6, heavy-duty anti-corrosion is also used. However, when this air corrosion protection is performed, if there is a damaged part such as a pinhole on the outer surface t, i' There is a drawback that the adhering moisture causes electric force to be generated by the electric current, and the resulting hydrogen and alkali cause the paint film to peel off, which is called "striping".
粉体エポキシ樹脂波層鋼管は、従来のアスファルトやコ
ールタール被１゛η釧ちよシ耐巳梗剥離性に優れている
が、まだ充分なものではなく、特に陰極剥離は環境得度
の上昇に伴って増大するため使用温度範囲の広い粉体エ
ポキシ樹脂被伊鍋管・にとってはこの耐陰極ｇｌＩ離件
の向上が重要な腺題となっている。Powder epoxy resin corrugated steel pipes have excellent peeling resistance when coated with conventional asphalt or coal tar, but this is not yet sufficient, and cathodic peeling in particular is becoming more difficult as environmental quality increases. Therefore, improvement of this cathode resistance is an important issue for powder epoxy resin ladle pipes which have a wide operating temperature range.
本発明者らはこのような課順に応えるために神々史験研
究を重ねた結果、下地処理としてシランカップリング剤
を塗布することにより耐陰極剥離性が向上することを見
出した。The inventors of the present invention have repeatedly conducted historical research in order to respond to such requirements, and have discovered that cathode peeling resistance can be improved by applying a silane coupling agent as a base treatment.
本発明で使用するシランカップリング剤は水溶液ないし
け水性分散液の形で使用するが、カップリング剤は次の
式によって形成されるものを使用する。The silane coupling agent used in the present invention is used in the form of an aqueous solution or an aqueous dispersion, and the coupling agent used is one formed by the following formula.
ＡＲ８ｉ １１３＋３ Ｒ２０→Ａ Ｒ８ｉ （ＯＨ）
ａ ＋３１４ Ｂ（Ａはエボギシ基など特定の基ｆ：
ｔ％つ有機官能基、又Ｂは一０Ｊ−ＯＣＯＲで、とのＲ
は低級アルキル基である。更にｄは（ＣＩＴ２）ｌ、で
ｎはθ〜３で夕）る。）
以上の如きシランカップリング剤を使用する時には、使
用によって期待し得る性能面、または保存面、価格面か
らみて０．５〜１０重量：％の水溶液濃度とし、また以
上のような使用濃度に調製したのちは、およそ１週間以
内で使用するのが望ましい。AR8i 113+3 R20→A R8i (OH)
a +314 B (A is a specific group such as Ebogishi group f:
t% organic functional group, and B is 10J-OCOR, and R with
is a lower alkyl group. Further, d is (CIT2)l, and n is θ~3. ) When using the above-mentioned silane coupling agent, the aqueous solution concentration should be 0.5 to 10% by weight from the viewpoint of expected performance, storage, and price. After preparation, it is desirable to use it within about one week.
以上の粉体エポキシ樹脂被覆調性は第１図に示すような
製造方法によって得ることができる。即ち第１図におい
て鋼管（１）は必要に応じて回転しつつ、矢印の方向に
進行している。The powder epoxy resin coating tones described above can be obtained by a manufacturing method as shown in FIG. That is, in FIG. 1, the steel pipe (1) is moving in the direction of the arrow while rotating as necessary.
％’Ｉ ｎ （１１ｈショツトブラスト等通、常の前処
理を施されていて、脣ず塗布装置（２）でシランカップ
リング剤を塗布する。塗布装置（２）としては第２図の
ようなスプレ翰の吹付けによるスプレ塗装あるいは第３
図のように液槽ＱＯに貯溜シｆｃシランカップリング処
理液に）をロールコーク翰によシ回転する鋼管（１）の
周囲に塗布するもの等が考えられる。尚、塗布装置（２
）の前に優性を９０℃程ｐＬ１で加熱しておいても良い
。但し９０℃を超えると処理液が過熱状態とカリ該処理
液が飛び散る等安全上の問題を生ずるため好寸しくない
。%'I n (11h The material has been subjected to usual pre-treatment such as shot blasting, etc., and then the silane coupling agent is applied with the coating device (2). The coating device (2) is as shown in Fig. 2. Spray painting by spraying with a spray gun or third
As shown in the figure, it is conceivable that the silane coupling treatment liquid (fc) stored in a liquid tank QO is applied around the rotating steel pipe (1) by a roll coke wire. In addition, the coating device (2
) may be heated to about 90°C at pL1. However, if the temperature exceeds 90° C., the processing solution becomes overheated and safety problems such as splashing of the potassium processing solution occur, which is not suitable.
次いで鋼管（１）は前加熱装置（３）によシ、２３０℃
程度まで加熱され、静＠塗装製置（４）で粉体エポキシ
樹脂が吹付けられ、更に後加熱装置（５）により２３０
℃程度まで再加熱されエポキシ樹脂被膜が形成される。Next, the steel pipe (1) is heated to 230°C by the preheating device (3).
Powdered epoxy resin is sprayed in a static @painting machine (4), and further heated to a temperature of 230 degrees by a post-heating device (5).
It is reheated to about ℃ to form an epoxy resin film.
この時、形成されるエポキシ樹脂被膜は３００〜４５０
μｍ程度の膜厚が適当である。その後冷却装置（６）で
冷却され検査や管端処理等通常の後処理を施されて製品
となる。At this time, the epoxy resin coating formed is 300 to 450
A film thickness of approximately μm is appropriate. Thereafter, it is cooled in a cooling device (6) and subjected to normal post-processing such as inspection and tube end treatment to become a product.
本発明者らは以上のような製造方法に基づき本発明に係
る粉体エポキシ樹脂鎖管を製造し、該鋼管の耐陰極剥離
性試験を行なった。The present inventors manufactured a powder epoxy resin chain pipe according to the present invention based on the manufacturing method described above, and conducted a cathodic peeling resistance test of the steel pipe.
製造条件は次の通シである。The manufacturing conditions are as follows.
銅 管： ４００Ａシヨツトブラスト処理Ｓａ２．５以
、ｉ：Ｔ他処理： ロールコータ決によシエボギシ系シ
ランカップリング剤３チ水溶液を塗布
塗 胸：前処理・・・・・・誘導加熱装置によシ加熱２
３０℃塗 装・・・・・・静電塗装法によ＃）粉体エポ
キシ樹脂を塗装 膜ノ９約４００μｍ
後加熱・・・・・・２３０℃赤外線炉約５分間冷 却：
後加熱終了後水冷
このような製造条件の基に製造さ！した被覆使竹を、２
００門Ｘ２００ＦＩＩ＋の試験片に切断し、Ａ Ｓ Ｔ
Ｍ −Ｇ ７に準拠した１陰′４へ剥離性試験を実施
した。まず、試験片に５ｔｈｐｎＨの初勘ピンホールを
あけ、ξれに−１，５ｖの防食１代圧をかけつつ３％Ｎ
ａ Ｃ１ｍ液に所定温度（２０℃、４０℃。Copper pipe: 400A shot blast treatment Sa2.5 or higher, i:T and other treatments: Apply a 3-ch aqueous solution of sieve-based silane coupling agent using a roll coater. Chest: Pre-treatment...Induction heating equipment Yoshi heating 2
Painting at 30°C: Apply powdered epoxy resin using electrostatic coating method Film No. 9 Approximately 400 μm Post-heating: Cooling at 230°C for approximately 5 minutes in an infrared oven:
Manufactured under these manufacturing conditions: water cooling after post-heating! 2 pieces of covered bamboo
Cut into 00mm x 200FII+ test pieces, A S T
A peelability test was carried out on 1 shade '4 in accordance with M-G 7. First, an initial pinhole of 5 thpnH was made in the test piece, and 3% N
a C1m solution at specified temperature (20℃, 40℃.
に０℃） 、ｉ定時１＋ｉｌ （３０日） Ｎｒｉ’ｔ
Ｌ、ｆｃ後後腐密着力低下部分換算剥離半径を測冗し
た。その結−Ｆｆ！：を次表に示す。(0℃), i regular time 1+il (30 days) Nri't
After L and fc, the peeling radius in terms of the reduced adhesive strength was measured. The result - Ff! : is shown in the table below.
なお、上記換３１： ｆｒ＋１ 耶半径は、初期ピンホ
ール（５咽０）を除いた腐食Ｂ１５而私を半径に換ηし
た値である。In addition, the above conversion 31: fr+1 耶radius is the value obtained by converting the corrosion B15 excluding the initial pinhole (5 0) into radius η.
上掲表かられかるように、下地処理として、エポキシ系
シランカップリング剤を施した試験片は無処理のものよ
シも換１＃剥離半径が小さく、耐陰極剥離性に優れてい
る。As can be seen from the table above, the test piece treated with an epoxy-based silane coupling agent as a base treatment had a smaller 1# peel radius than the untreated piece, and was superior in cathodic peel resistance.
以上のように、本発明は、粉体エポキシ樹脂被色化性に
おいて、９１１危に下地処理としてシランカップリング
剤ヲ施しているため、耐ｎＭ ｆｆ１ｌ錐性が高く、７
Ｔｊ、 Ｆｌ、防食を兼ねるパイプライン用鋼管として
最適のものを１１７ることかできる。As described above, the powder epoxy resin of the present invention has high nM ff1l cone resistance and 7
It is possible to find 117 optimal steel pipes for pipelines that also serve as Tj, Fl, and corrosion protection.
／／、図面の節ｊｌｓなン用１１
；ｉ％ ３図は１本発明に係る鋼管のトす遣方法の一例
を示す」−心図、第２１ツ１はシランカップリング剤塗
布、Ｐ、 ｉｉ７の−ｆｌＪを示す説明図、ｒｐ： ３
し！は別の塗布装置を示す説明図である。11;i% Figure 3 shows an example of the method of rolling steel pipes according to the present invention. Explanatory diagram showing -flJ of ii7, rp: 3
death! FIG. 2 is an explanatory diagram showing another coating device.
図１中、（ＩＩは階管、（２）は塗布装置、（３）は前
加熱装置、（４）社静電塗装装色、（５）は後加熱装置
、（６）は冷却装（ｉ７會各示１゜特許１３願人 日木
鏑Ｔイ株式会社
発明者 武 １） 孝
同 大 森 克 巳
回 大 熊 俊 之
代理人弁理士 吉 原 省 玉
量 同 高 橋 消
量 弁蒔士 吉 原 弘 子In Figure 1, (II) is a floor pipe, (2) is a coating device, (3) is a pre-heating device, (4) is an electrostatic coating system, (5) is a post-heating device, and (6) is a cooling device ( i7 each meeting 1゜Patent 13 applicant Hiki Kabura T-I Co., Ltd. Inventor Takeshi 1) Kodo Katsumi Omori Toshiyuki Oguma Patent attorney Attorney Yoshihara Sho Tamasyo Dotaka Hashi Mitsuru Benmatsushi Hiroko Yoshihara
Claims (1)
に粉体エポキシ１ｂ４脂で被覆したことを特徴とする耐
陰極ｆｌｌ Ｉ’！ＩＦ性に優れた外面粉体エポキシ樹
脂′＄争鋼哲。A cathode-resistant electrode full I'! that is characterized by applying a silane coupling agent as a base treatment and then coating it with powdered epoxy 1b4 resin. External powder epoxy resin with excellent IF properties.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13092383A JPS6023038A (en) | 1983-07-20 | 1983-07-20 | Outer-surface powdered body epoxy resin coated steel pipe having excellent anticathode release characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13092383A JPS6023038A (en) | 1983-07-20 | 1983-07-20 | Outer-surface powdered body epoxy resin coated steel pipe having excellent anticathode release characteristic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6023038A true JPS6023038A (en) | 1985-02-05 |
Family
ID=15045891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13092383A Pending JPS6023038A (en) | 1983-07-20 | 1983-07-20 | Outer-surface powdered body epoxy resin coated steel pipe having excellent anticathode release characteristic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6023038A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02132656A (en) * | 1988-07-30 | 1990-05-22 | Taiyo Yuden Co Ltd | Optical information recording medium and optical information recording method using it |
| US5089076A (en) * | 1987-07-10 | 1992-02-18 | Chelsea Artisans Plc | Method of manufacturing article including melting thermosetting-powder |
| US5330602A (en) * | 1989-08-15 | 1994-07-19 | Leach Roger J | Manufacture of articles that include thermosetting powder coatings |
-
1983
- 1983-07-20 JP JP13092383A patent/JPS6023038A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5089076A (en) * | 1987-07-10 | 1992-02-18 | Chelsea Artisans Plc | Method of manufacturing article including melting thermosetting-powder |
| JPH02132656A (en) * | 1988-07-30 | 1990-05-22 | Taiyo Yuden Co Ltd | Optical information recording medium and optical information recording method using it |
| JPH0375942B2 (en) * | 1988-07-30 | 1991-12-03 | Taiyo Yuden Kk | |
| US5330602A (en) * | 1989-08-15 | 1994-07-19 | Leach Roger J | Manufacture of articles that include thermosetting powder coatings |
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