JP2620470B2 - Method for manufacturing thermosetting resin sandwich type composite steel sheet - Google Patents
Method for manufacturing thermosetting resin sandwich type composite steel sheetInfo
- Publication number
- JP2620470B2 JP2620470B2 JP4233743A JP23374392A JP2620470B2 JP 2620470 B2 JP2620470 B2 JP 2620470B2 JP 4233743 A JP4233743 A JP 4233743A JP 23374392 A JP23374392 A JP 23374392A JP 2620470 B2 JP2620470 B2 JP 2620470B2
- Authority
- JP
- Japan
- Prior art keywords
- thermosetting resin
- resin
- steel sheet
- stainless steel
- type composite
- 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.)
- Expired - Lifetime
Links
Landscapes
- Laminated Bodies (AREA)
- Chemical Treatment Of Metals (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は熱硬化性樹脂サンドイッ
チ型複合鋼板の製造方法に関するものである。The present invention relates to a method of manufacturing a thermosetting resin sandwich composite steel plate.
【０００２】[0002]
【従来の技術】ステンレス鋼板を表皮材とし合成樹脂を
中間層とした樹脂サンドイッチ型複合鋼板（制振鋼板）
は屋根材、壁材、カーテンレール材などに実用化が進め
られているが、これらの用途では高い接着力と長期間に
わたる安定した接着力の維持が要求されるため、ステン
レス鋼板の樹脂接着面にクロメート処理を施すとともに
樹脂中間層に熱硬化性樹脂を用いて接着力を高めるなど
の対策が採られている。しかしながら、ステンレス鋼板
は表面が不動態皮膜で強固に覆われているため、クロメ
ート処理液の濡れ性が悪い。このため、りん酸などのエ
ッチング剤で濡れ性の向上を計っているが、それでも均
一な処理面が得られず、このため表皮材であるステンレ
ス鋼板と中間層である熱硬化性樹脂との密着力が充分に
得られない。また、樹脂接着面に従来法によりクロメー
ト処理を施したステンレス鋼板を表皮材とし樹脂中間層
に熱硬化性樹脂を用いて加熱硬化しても、樹脂の硬化が
不充分となりがちで表皮材と樹脂中間層との密着力が充
分に得られない。2. Description of the Related Art A resin sandwich type composite steel sheet (damping steel sheet) using a stainless steel sheet as a skin material and a synthetic resin as an intermediate layer.
Is being put to practical use for roof materials, wall materials, curtain rail materials, etc., but these applications require high adhesive strength and maintenance of stable adhesive strength over a long period of time. In addition, measures such as increasing the adhesive strength by using a thermosetting resin for the resin intermediate layer and applying a chromate treatment to the resin intermediate layer are taken. However, since the surface of a stainless steel plate is firmly covered with a passivation film, the chromate treatment liquid has poor wettability. For this reason, the wettability is improved with an etching agent such as phosphoric acid, but a uniform treated surface cannot be obtained, and the adhesion between the stainless steel sheet as the skin material and the thermosetting resin as the intermediate layer is not achieved. Power is not enough. In addition, even if a stainless steel sheet with a chromate treatment applied to the resin bonding surface by a conventional method is used as the skin material and the thermosetting resin is used for the resin intermediate layer, the hardening of the resin tends to be insufficient. The adhesion to the intermediate layer cannot be sufficiently obtained.
【０００３】[0003]
【発明が解決しようとする課題】本発明は前記のような
従来の熱硬化性樹脂サンドイッチ型複合鋼板の問題点を
解消し、表皮材と中間層樹脂との高い接着力と長期間に
わたる安定した接着力の維持が可能な熱硬化性樹脂サン
ドイッチ型複合鋼板を容易に量産できる熱硬化性樹脂サ
ンドイッチ型複合鋼板の製造方法を提供するものであ
る。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the conventional thermosetting resin sandwich-type composite steel sheet, and achieves a high adhesive strength between the skin material and the interlayer resin and a stable long-term resin. there is provided a method for producing a thermosetting resin sandwich composite steel plate with a thermosetting resin sandwich composite steel sheet capable of maintaining adhesive strength can be easily mass-produced.
【０００４】[0004]
【課題を解決するための手段】前記のような課題を解決
するためになされた本発明の熱硬化性樹脂サンドイッチ
型複合鋼板の製造方法は、一連の製造工程において使用
されるクロメート液中のりん酸分が表皮材であるステン
レス鋼板と中間層である熱硬化性樹脂との接着力に悪影
響を及ぼしていることを見いだし、このようなりん酸分
の使用を排除することにより表皮材と中間層樹脂との高
い接着力と長期間にわたる安定した接着力の維持を可能
としたものであって、ステンレス鋼板の樹脂接触面をア
ルカリ水溶液で処理して樹脂接触面を覆っている不動態
被膜を除去することにより樹脂接触面の濡れ性を向上さ
せた後りん酸無添加のクロメート処理液で処理して樹脂
接触面にりん酸無添加の均一なクロメート皮膜を形成
し、これを表皮材として熱硬化性樹脂を中間に介在させ
て熱硬化させることにより、熱硬化性樹脂よりなる中間
層を表皮材であるステンレス鋼板に対してりん酸無添加
の均一なクロメート皮膜を介して強固に積層一体化させ
ることを特徴とする熱硬化性樹脂サンドイッチ型複合鋼
板の製造方法とよりなるものである。Means for Solving the Problems A method for producing a thermosetting resin sandwich-type composite steel sheet according to the present invention, which has been made to solve the above-mentioned problems, is characterized in that phosphorus in chromate solution used in a series of production steps is used. It was found that the acid content had an adverse effect on the adhesion between the stainless steel sheet as the skin material and the thermosetting resin as the intermediate layer, and by eliminating such use of phosphoric acid, the skin material and the intermediate layer were eliminated. A passivation that enables high adhesion to resin and stable adhesion for a long period of time, and covers the resin contact surface by treating the resin contact surface of a stainless steel plate with an alkaline aqueous solution.
Improved wettability of resin contact surface by removing coating
It is treated with chromate treatment liquid of phosphate-free additives after forming a uniform chromate coating of the phosphate-free additive resin contact surface, the thermosetting resin is interposed midway thermally curing it as skin material The thermosetting resin sandwich type is characterized in that an intermediate layer made of a thermosetting resin is firmly laminated and integrated on a stainless steel plate as a skin material through a uniform chromate film without phosphoric acid. And a method for producing a composite steel sheet.
【０００５】以下、本発明を実施例に併せ詳細に説明す
る。Hereinafter, the present invention will be described in detail with reference to examples.
【実施例】本発明において、表皮材とするステンレス鋼
板は先ずＮａＯＨ、オルソケイ酸ソーダなどの１０〜５
０g/l 濃度のアルカリ水溶液をもって噴射するか或いは
浸漬するか電解などの手段によってステンレス鋼板の樹
脂接触面を覆っている不動態被膜を除去し、これにより
少なくともその樹脂接触面の濡れ性を向上しておき、次
に、コロイダルシリカ（SiO2）の添加されたクロム酸を
基本とするりん酸無添加のクロメート処理液を塗布する
か或いは浸漬するなどの手段で前記ステンレス鋼板を処
理すれば、ここに均一なクロメート皮膜が形成される。
この際、クロメート処理液はＣｒ量で２０〜６０mg／m2
程度被覆することによって均一に被覆することができ、
これによって積層一体化させる樹脂との密着性は大きく
向上されたものとなる。なお、前記のようにして形成し
たクロメート皮膜中に仮にりん酸が存在したとすれば、
複合鋼板とするための中間層のポリエステル系樹脂など
の熱硬化性樹脂に添加されている架橋触媒（トリフェニ
ルホスフィンなど）がクロメート皮膜中のりん酸と接触
することによって酸化され、触媒機能を低下させる結
果、樹脂の硬化に妨げとなるものであるが、本発明では
ステンレス鋼板にクロメート処理を施すとき、クロメー
ト処理液にりん酸が添加されていないりん酸無添加のク
ロメート液で行うとともに、その前処理としてステンレ
ス鋼板の樹脂接触面をアルカリ水溶液で処理しておくだ
けで、りん酸無添加のクロメート皮膜が形成されて前記
のような樹脂の硬化に障害を来すことは全くないものと
なる。なお、工業的規模で製造するクロメート液中にり
ん酸が不純物として含有されている程度であれば、樹脂
中の架橋触媒を酸化し、樹脂の熱硬化を低下することは
ほとんどない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a stainless steel sheet used as a skin material is first made of NaOH, sodium orthosilicate or the like.
Tree of stainless steel plate by means such as 0 g / l concentration of either the electrolyte or immersed to inject with an aqueous alkali solution
The passivation coating covering the grease contact surface is removed, thereby improving at least the wettability of the grease contact surface , and then the chromic acid added with colloidal silica (SiO 2 ) is removed. If the stainless steel sheet is treated by means of applying or dipping a base chromate-free solution containing no phosphoric acid, a uniform chromate film is formed thereon.
At this time, the chromate treatment liquid is 20 to 60 mg / m 2 in terms of Cr amount.
Can be uniformly coated by coating to a degree,
Thereby, the adhesion to the resin to be laminated and integrated is greatly improved. If phosphoric acid is present in the chromate film formed as described above,
Cross-linking catalyst (triphenylphosphine, etc.) added to the thermosetting resin such as polyester resin in the intermediate layer to form a composite steel sheet is oxidized by contact with the phosphoric acid in the chromate film, deteriorating the catalytic function As a result, it is difficult to cure the resin, but in the present invention, when performing chromate treatment on the stainless steel plate, the chromate treatment solution is performed with a phosphoric acid-free chromate solution in which phosphoric acid is not added, and By merely treating the resin contact surface of the stainless steel sheet with an alkaline aqueous solution as a pretreatment, a phosphoric acid-free chromate film is formed, which does not hinder the curing of the resin as described above. . In addition, as long as phosphoric acid is contained as an impurity in a chromate solution produced on an industrial scale, the crosslinking catalyst in the resin is oxidized, and the thermosetting of the resin is hardly reduced.
【０００６】前記のようにして樹脂接触面となる表面に
りん酸無添加のクロメート皮膜を均一に形成されたステ
ンレス鋼板の２枚の中間に熱硬化性樹脂をサンドイッチ
型に介在させたうえ常法により加熱加圧することにより
樹脂を確実に硬化させれば、ここに樹脂接触面にりん酸
無添加のクロメート皮膜が形成されたステンレス鋼板を
表皮材とし熱硬化性樹脂を中間層として積層一体化され
ている熱硬化性樹脂サンドイッチ型複合鋼板となるもの
である。[0006] A thermosetting resin is sandwiched between two stainless steel plates having a chromate film without phosphoric acid added uniformly on the surface serving as the resin contact surface as described above, and a conventional method is used. If the resin is reliably cured by heating and pressurizing, the stainless steel sheet with a chromate film without phosphoric acid formed on the resin contact surface is used as the skin material, and the thermosetting resin is laminated and integrated as the intermediate layer. The resulting thermosetting resin sandwich-type composite steel sheet.
【０００７】次に、本発明の詳細な実施例１、２、３を
比較例１、２とともに示す。Next, detailed Examples 1, 2, and 3 of the present invention are shown together with Comparative Examples 1 and 2.
【表１】 注１：ステンレス鋼板は表裏となる表皮材共に同一仕
様。 注２：クロメート処理液はクロム酸 1.0％、コロイダル
シリカ 2.0％で、りん酸添加クロメート処理液は上記処
理液にりん酸 0.5％添加。 注３：樹脂はポリエステルを溶剤で溶かしてロールコー
ターにより一方のステンレス鋼板の片面に塗布後 180℃
で90秒間の熱処理で溶剤を蒸発除去し、他方のステンレ
ス鋼板を該樹脂塗布面に重ね合せ、ロール圧着により接
着し、 180〜 200℃で30秒間熱硬化処理を行う。 注４：Ｔピール強度試験に際し、実施例１、２、３では
均一強固に樹脂とステンレス鋼板が密着。比較例１はア
ルカリ処理により均一なクロメート処理がなされている
が、りん酸の存在により樹脂の熱硬化が不充分で、密着
性が劣る。比較例２は樹脂の熱硬化は充分であるが、ア
ルカリ処理を欠くことによりクロメート処理が不均一
で、密着性が25mm幅、150mm 長さの試験片において大き
なバラツキを生じた。[Table 1] Note 1: Stainless steel plates have the same specifications for the front and back skin materials. Note 2: The chromate treatment solution is 1.0% chromic acid and 2.0% colloidal silica. The chromate treatment solution with phosphoric acid is 0.5% phosphoric acid added to the above treatment solution. Note 3: The resin is made by dissolving polyester in a solvent and applied to one side of one stainless steel plate by a roll coater, then 180 ℃
The solvent is evaporated off by heat treatment for 90 seconds, and the other stainless steel plate is overlaid on the resin-coated surface, adhered by roll pressure bonding, and heat-cured at 180 to 200 ° C. for 30 seconds. Note 4: In the T-peel strength test, in Examples 1, 2, and 3, the resin and the stainless steel plate adhered uniformly and firmly. In Comparative Example 1, the uniform chromate treatment was performed by the alkali treatment, but the thermosetting of the resin was insufficient due to the presence of phosphoric acid, and the adhesion was poor. In Comparative Example 2, although the thermosetting of the resin was sufficient, the chromate treatment was non-uniform due to lack of the alkali treatment, and the adhesion was large in the test pieces having a width of 25 mm and a length of 150 mm.
【０００８】[0008]
【発明の効果】本発明によれば、ステンレス鋼板にクロ
メート処理を施すとき、その前処理としてステンレス鋼
板の樹脂接触面を覆っている不動態被膜をアルカリ水溶
液による処理で除去することにより樹脂接触面の濡れ性
を向上させる工程を加えることと、クロメート処理をり
ん酸無添加のクロメート処理液で行うという簡単な改良
だけで、ステンレス鋼板を表皮材とし熱硬化性樹脂を中
間層とした熱硬化性樹脂サンドイッチ型の複合鋼板の接
着力が大幅に改善されたものとして提供できるものであ
り、この接着力の向上により加工した時の形状凍結性も
改善され、高い接着力と長期間にわたる安定した接着力
の維持によって従来加工を困難とした新用途にも使用が
可能になるなど優れた効果を奏する。According to the present invention, when a chromate treatment is applied to a stainless steel plate, the passivation film covering the resin contact surface of the stainless steel plate is preliminarily treated with an alkaline aqueous solution.
Wettability of resin contact surface by removing by treatment with liquid
And adding a step of Ru improve, only simple modifications of performing chromate treatment solution of chromate treatment phosphate-free additives, thermosetting resin sandwich the stainless steel plate was a thermosetting resin as a skin material intermediate layer It can be provided as a product with significantly improved adhesive strength of the composite steel sheet of the mold, and the improved adhesiveness also improves the shape freezing property during processing, resulting in high adhesive strength and stable adhesive power over a long period of time. Maintaining the effect makes it possible to use it for new applications where conventional processing has been difficult.
Claims (2)
膜が形成されたステンレス鋼板を表皮材として該熱硬化
性樹脂の熱硬化により積層一体化する熱硬化性樹脂サン
ドイッチ型複合鋼板の製造方法において、ステンレス鋼
板の樹脂接触面をアルカリ水溶液で処理して樹脂接触面
を覆っている不動態被膜を除去することにより樹脂接触
面の濡れ性を向上させた後りん酸無添加のクロメート処
理液で処理して樹脂接触面にりん酸無添加の均一なクロ
メート皮膜を形成し、これを表皮材として熱硬化性樹脂
を中間に介在させて熱硬化させることにより、熱硬化性
樹脂よりなる中間層を表皮材であるステンレス鋼板に対
してりん酸無添加の均一なクロメート皮膜を介して強固
に積層一体化させることを特徴とする熱硬化性樹脂サン
ドイッチ型複合鋼板の製造方法。1. A method for producing a thermosetting resin sandwich-type composite steel sheet in which a stainless steel sheet having a thermosetting resin as an intermediate layer and a chromate film formed thereon is used as a skin material and laminated and integrated by thermosetting of the thermosetting resin. , The resin contact surface of the stainless steel plate is treated with an alkaline aqueous solution
Resin contact by removing the passivating film covering
After improving the wettability of the surface, it is treated with a chromate treatment solution containing no phosphoric acid to form a uniform phosphorate-free chromate film on the resin contact surface, and this is used as a skin material with a thermosetting resin in between. It is characterized in that the intermediate layer made of a thermosetting resin is firmly laminated and integrated with a stainless steel plate as a skin material via a uniform phosphoric acid-free chromate film by being interposed and thermosetting. A method for producing a thermosetting resin sandwich-type composite steel sheet.
イダルシリカからなるものとした請求項１に記載の熱硬
化性樹脂サンドイッチ型複合鋼板の製造方法。2. The method for producing a thermosetting resin sandwich-type composite steel sheet according to claim 1, wherein the chromate treatment liquid comprises chromic acid and colloidal silica.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4233743A JP2620470B2 (en) | 1992-09-01 | 1992-09-01 | Method for manufacturing thermosetting resin sandwich type composite steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4233743A JP2620470B2 (en) | 1992-09-01 | 1992-09-01 | Method for manufacturing thermosetting resin sandwich type composite steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0679825A JPH0679825A (en) | 1994-03-22 |
| JP2620470B2 true JP2620470B2 (en) | 1997-06-11 |
Family
ID=16959884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4233743A Expired - Lifetime JP2620470B2 (en) | 1992-09-01 | 1992-09-01 | Method for manufacturing thermosetting resin sandwich type composite steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2620470B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100723228B1 (en) * | 2005-12-26 | 2007-05-29 | 주식회사 포스코 | Resin sandwich type composite steel having silicon oxide film and method for manufacturing it by combustion chemical vapor deposition |
| CN104203566B (en) * | 2012-03-29 | 2016-08-24 | 日铁住金建材株式会社 | Metal foil layer laminated metal sheet and the manufacture method of metal foil layer laminated metal sheet |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60225748A (en) * | 1984-04-24 | 1985-11-11 | 新日本製鐵株式会社 | Manufacture of laminated metallic plate |
| JPH03271379A (en) * | 1990-03-20 | 1991-12-03 | Kawasaki Steel Corp | Stainless steel sheet to be coated and coated steel sheet |
| JPH0477247A (en) * | 1990-07-19 | 1992-03-11 | Kawasaki Steel Corp | Resin composite type vibration damping stainless steel plate excellent in adherence and spot weldability |
| JPH0494768A (en) * | 1990-08-10 | 1992-03-26 | Kawatetsu Galvanizing Co Ltd | Manufacture of heat resistant precoated steel sheet excellent in adhesive strength of coating film, corrosion resistance and releasability or the like |
| JPH04164637A (en) * | 1990-10-29 | 1992-06-10 | Nippon Stainless Steel Co Ltd | Preparation of rubber coated stainless steel plate |
-
1992
- 1992-09-01 JP JP4233743A patent/JP2620470B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0679825A (en) | 1994-03-22 |
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Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19960806 |
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