JP2975408B2 - Manufacturing method of stainless steel coated steel sheet - Google Patents
Manufacturing method of stainless steel coated steel sheetInfo
- Publication number
- JP2975408B2 JP2975408B2 JP21059390A JP21059390A JP2975408B2 JP 2975408 B2 JP2975408 B2 JP 2975408B2 JP 21059390 A JP21059390 A JP 21059390A JP 21059390 A JP21059390 A JP 21059390A JP 2975408 B2 JP2975408 B2 JP 2975408B2
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- weight
- chemical conversion
- coating
- steel sheet
- 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
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は耐候性が高く、各種の環境下においても塗膜
のはがれ、ふくれ等がなく密着性に優れるステンレス塗
装鋼板の製造方法に係るものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a method for producing a stainless steel coated steel sheet which has high weather resistance, has no peeling of a coating film under various environments, and has excellent adhesion without any blistering. It is.
（従来技術） 従来より、ステンレス表面に各種の塗装が試みられて
いる。これは本来、耐食性、耐熱性に優れるステンレス
が、他からのもらい錆により錆を発生したり、空気中の
塵埃により汚染したりするため、それらを防止し、より
美観に優れたものとするとの要求により行われているも
のである。(Prior art) Various coatings have been attempted on the surface of stainless steel. This is because stainless steel, which is originally excellent in corrosion resistance and heat resistance, generates rust due to rust from others and contaminates with dust in the air, so it is prevented, and it is said that it will be more aesthetically pleasing. It is done by request.
しかしながら、ステンレス表面は本来不活性であるた
め、これらの塗装により形成された塗膜は、その密着性
が不十分で、長期間には、はがれ、ふくれを生じる場合
が多かった。However, since the stainless steel surface is originally inert, the coatings formed by these coatings have insufficient adhesion and often peel off and blister for a long period of time.
これに対して従来より、ステンレス表面をブラスト処
理により粗度調整し、微細な凹凸により塗膜とステンレ
スの接触面積を広げて、物理的に塗膜の密着性を向上さ
せる方法や、エッチングプライマー等により、続く塗膜
の密着性の良い表面を形成する方法、リン酸、ケイ酸、
タンニン酸、クロメート等の単独または混合物からなる
化成処理液によりステンレス表面を処理し表面を活性化
する方法や、塗装する塗料中にシランカップリング剤等
を添加して、不活性表面と塗膜との結合性を向上させる
方法が行われている。On the other hand, conventionally, a method of adjusting the roughness of the stainless steel surface by blast treatment, expanding the contact area between the coating film and the stainless steel by fine irregularities, and physically improving the adhesion of the coating film, an etching primer, etc. By the method of forming a surface with good adhesion of the subsequent coating film, phosphoric acid, silicic acid,
Tannic acid, a method of activating the surface by treating the stainless steel surface with a chemical conversion treatment solution consisting of a single or a mixture of chromate or the like, or adding a silane coupling agent or the like to the paint to be applied, and coating the inert surface with the coating film. There has been a method for improving the binding property.
（発明が解決しようとする問題点） しかしながら、上記の方法のうちブラスト処理により
粗度調整する場合は、塗装工程が煩雑になるうえに大掛
かりな設備が必要である。また、エッチングプライマー
や従来の化成処理を起ったステンレス塗装鋼板では、過
酷な条件下で使用された場合、密着性に問題があった。(Problems to be Solved by the Invention) However, when the roughness is adjusted by blast processing among the above methods, the painting process becomes complicated and large-scale equipment is required. In addition, in the case of an etching primer or a stainless steel coated steel sheet which has undergone conventional chemical conversion treatment, there is a problem in adhesion when used under severe conditions.
（問題点を解決するための手段） このような問題点を解決するため、本発明者らは水洗
や大掛かりな設備を必要とせず、ステンレス鋼板表面
に、特定の化成処理層、プライマー層、仕上げ塗膜層を
単に積層するだけで形成される塗膜の耐候性、密着性に
優れたステンレス塗装鋼板を発明した。すなわち、 ステンレス鋼板の表面に、 主成分として、リン酸１重量部に対して、クロム酸４
〜８重量部、ケイ酸塩0.5重量部以下の比率からなる化
成処理液により、乾燥時、クロムの付着量で５〜50mg/m
2となるように形成される化成処理層、 顔料重量濃度（PWC）が５〜40％であり、樹脂固形分
に対して１〜10重量％のエポキシ系、アミン系、メルカ
プト系より選ばれる少なくとも１種以上のシランカップ
リング剤を含むエポキシ樹脂系プライマー層。(Means for Solving the Problems) In order to solve such problems, the present inventors did not require water washing or large-scale equipment, and provided a specific chemical conversion treatment layer, a primer layer, and a finish on the surface of a stainless steel plate. We have invented a stainless steel coated steel sheet having excellent weather resistance and adhesion of a coating film formed by simply laminating coating layers. That is, on the surface of a stainless steel sheet, as a main component, 1 part by weight of phosphoric acid and 4 parts of chromic acid
5 to 50 parts by weight of chromium when dried with a chemical conversion treatment solution having a ratio of up to 8 parts by weight and a silicate of 0.5 part by weight or less.
Chemical conversion layer formed so as to be 2, 5 to 40% pigment weight concentration (PWC) is at least the resin solid content 10% by weight of the epoxy, amine, selected from mercapto An epoxy resin-based primer layer containing one or more silane coupling agents.
溶剤可溶型フッソ樹脂系仕上げ塗料層を順次積層する
ステンレス塗装鋼板の製造方法である。This is a method for producing a stainless steel coated steel sheet in which a solvent-soluble type fluororesin-based finish paint layer is sequentially laminated.
本発明において用いられるステンレス鋼板は、JISに
よって規定されているオーステナイト系18クロム−８−
ニッケル系のSUS301、SUS304,SUS316、オーステナイト
系クロム−マンガン系のSES201、SUS202、フェライト系
18クロム系のSUS430、マルテンサイト系13クロム系のSU
S410等通常使用されているものでありステンレス鋼板で
あれば特に限定されない。The stainless steel sheet used in the present invention is austenitic 18 chrome-8- specified by JIS.
Nickel SUS301, SUS304, SUS316, austenitic chromium-manganese SES201, SUS202, ferrite
18 Chromium SUS430, Martensitic 13 Chromium SU
There is no particular limitation as long as it is a commonly used stainless steel plate such as S410.
ここでの化成処理層を形成する化成処理液は主成分
として、リン酸１重量部に対して、３価及び／又は６価
のクロム酸が４〜８重量部、ケイ酸塩は0.5重量部以
下、好ましくは0.1重量部以下のの比率で添加されてい
る。また、これらの主成分濃度は乾燥時の化成処理層に
おいてクロムの付着量が５〜50mg/m2となるように適宜
調整される。The chemical conversion treatment solution for forming the chemical conversion treatment layer here is composed mainly of 4 to 8 parts by weight of trivalent and / or hexavalent chromic acid and 0.5 part by weight of silicate per 1 part by weight of phosphoric acid. Hereafter, it is preferably added at a ratio of 0.1 part by weight or less. The concentrations of these main components are appropriately adjusted so that the amount of chromium adhered to the chemical conversion treatment layer at the time of drying is 5 to 50 mg / m 2 .
更に化成処理層が均一となるようにするために、表面
張力の調整として、これらに界面活性剤等を添加しても
良い。Further, in order to make the chemical conversion treatment layer uniform, a surfactant or the like may be added to these to adjust the surface tension.
上記の成分において、ケイ酸塩を0.5重量部を超えて
添加すると、化成処理層の造膜性が悪く、均一な化成処
理層が得られないため、続くプライマーや仕上げ塗料の
密着性が低下する。また、これを無理に造膜させるため
にはスプレー塗装や浸漬等の方法では不可能であり、ロ
ールコーター等の設備を必要とするため、塗装工程上か
ら不都合である。In the above components, if the silicate is added in excess of 0.5 parts by weight, the film-forming property of the chemical conversion treatment layer is poor, and a uniform chemical conversion treatment layer cannot be obtained, so that the adhesion of the subsequent primer or finish paint decreases. . Further, it is impossible to form a film by force, for example, by a method such as spray coating or dipping, and equipment such as a roll coater is required, which is inconvenient in the coating process.
次にのエポキシ樹脂プライマーは、分子量400〜500
0程度のビスフェノールＡ型、ビスフェノールＦ型、水
添ビスフェノールＡ型、βメチルエピクロ型、ノボラッ
ク型、レゾルシン型、グリコールエーテル型、環状エス
テル型、脂肪族エステル型等の２液硬化型のエポキシ樹
脂を用いる。硬化剤としては、脂肪族アミン、芳香族ア
ミン、ポリ（アミノ）アミド、脂環族アミン、アミンア
ダクト（変性アミン）等があげられる。また、このエポ
キシ樹脂プライマーに添加するエポキシ系、アミン系、
メルカプト系より選ばれる少なくとも１種以上とシラン
カップリング剤は、プライマー塗料中の全樹脂固形分に
対して、１〜10重量％の比率で添加する。これらシラン
カップリング剤の例としては、エポキシ系は、β−
（３、４エポキシシクロヘキシル）エチルトリメトキシ
シラン、γ−グリシドキシプロピルトリメトキシシラ
ン、γ−グリシドキシプロピルメチルジエトキシシラン
等、アミン系は、Ｎ−β（アミノエチル）γ−アミノプ
ロピルトリメトキシシラン、Ｎ−β（アミノエチル）γ
−アミノプロピルメチルジメトキシシラン、γ−アミノ
プロピルトリエトキシシラン、Ｎ−フェニル−γ−アミ
ノプロピルトリメトキシシラン等、メルカプト系は、γ
−メルカプトプロピルトリメトキシシラン等があげられ
る。また顔料としては、酸化チタン、タルク、硫酸バリ
ウム、珪砂、炭酸カルシウム、クレー、カオリン、珪酸
アルミニウム、ホワイトカーボン、ベントナイト、炭酸
バリウム、雲母等などがあげられる。The next epoxy resin primer has a molecular weight of 400-500
Use a two-part curable epoxy resin such as bisphenol A type, bisphenol F type, hydrogenated bisphenol A type, β-methyl epichloro type, novolak type, resorcinol type, glycol ether type, cyclic ester type, and aliphatic ester type. . Examples of the curing agent include aliphatic amines, aromatic amines, poly (amino) amides, alicyclic amines, and amine adducts (modified amines). In addition, epoxy-based, amine-based,
At least one kind selected from mercapto type and the silane coupling agent are added at a ratio of 1 to 10% by weight based on the total resin solid content in the primer coating. As an example of these silane coupling agents, the epoxy type is β-
The amines such as (3,4 epoxycyclohexyl) ethyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropylmethyldiethoxysilane, and the like are N-β (aminoethyl) γ-aminopropyltriamine. Methoxysilane, N-β (aminoethyl) γ
-Aminopropylmethyldimethoxysilane, γ-aminopropyltriethoxysilane, N-phenyl-γ-aminopropyltrimethoxysilane, etc.
-Mercaptopropyltrimethoxysilane and the like. Examples of the pigment include titanium oxide, talc, barium sulfate, silica sand, calcium carbonate, clay, kaolin, aluminum silicate, white carbon, bentonite, barium carbonate, mica and the like.
これらの顔料は、顔料重量濃度（PWC）が、５〜40％
となるように添加する。These pigments have a pigment weight concentration (PWC) of 5-40%
Add so that
次に、の溶剤可溶型フッソ樹脂系仕上げ塗料層は、
フルオロオレフィン、例えばモノクロロトリフルオロエ
チレン、ジクロロジフルオロエチレン等のパーハロオレ
フィンやフッ化ビニリデン等の含フッソ不飽和単量体
と、重合可能な不飽和結合を有する単量体と、官能基と
して水酸基やアシル基、アシルオキシ基を有する重合可
能な不飽和結合を有する単量体を、共重合してなる含フ
ッソ樹脂に、架橋剤としてイソシアネートやメラミンを
反応させて塗膜とするものである。Next, the solvent-soluble fluorine resin-based finish paint layer is
Fluoroolefins, for example, monohalofluoroethylene, perhaloolefins such as dichlorodifluoroethylene and fluorine-containing unsaturated monomers such as vinylidene fluoride, and a monomer having a polymerizable unsaturated bond, and a hydroxyl group as a functional group A coating film is obtained by reacting a monomer having an unsaturated bond having a polymerizable unsaturated bond having an acyl group or an acyloxy group with a fluorine-containing resin obtained by copolymerization with isocyanate or melamine as a crosslinking agent.
これら各層の塗装工程は、例えば、 （ａ）まず、ステンレス鋼板の表面の汚れ、油脂を除去
し表面状態を整えるために、酸またはアルカリ系の脱脂
剤にて脱脂する。The coating process of each of these layers includes, for example, (a) First, in order to remove stains and oils and fats on the surface of the stainless steel plate and to adjust the surface state, the stainless steel plate is degreased with an acid or alkali degreasing agent.
（ｂ）次に本発明における化成処理液を用いて、浸漬、
流しかけ、スプレーのいずれかにより処理を行う。処理
時間は10〜60秒、処理温度は15〜43℃、塗付量はクロム
付着量で５〜50mg/m2、処理後水切りを行い、その後70
℃以上にて乾燥を行う。(B) Next, using the chemical conversion treatment solution of the present invention, immersion,
The treatment is performed by spraying or spraying. The treatment time is 10-60 seconds, the treatment temperature is 15-43 ° C, the coating amount is 5-50 mg / m 2 in chromium adhesion amount, and after the treatment, draining is performed, and then 70
Dry at ℃ or more.
（ｃ）次に、下塗りとしてエポキシ樹脂系塗料を乾燥膜
厚が10〜50μとなるように塗装する。塗装方法は、一般
のエナメルに使用するような、スプレーガン、静電スプ
レー、刷毛、ローラー等の用いる。塗装後は常温にても
硬化するが、80℃にて30分乾燥を行えば、短時間にて諸
物性を得ることができる。(C) Next, an epoxy resin-based paint is applied as an undercoat so that the dry film thickness becomes 10 to 50 μm. As a coating method, a spray gun, an electrostatic spray, a brush, a roller, or the like, which is used for general enamel, is used. After coating, it cures at room temperature, but if dried at 80 ° C for 30 minutes, various physical properties can be obtained in a short time.
（ｄ）次に、上塗には溶剤可溶型フッソ樹脂を使用す
る。塗付量は乾燥膜厚が15〜60μとなるように塗装す
る。塗装方法は下塗りと同様の方法を用いることができ
る。塗装後は常温にても硬化するが、例えば120℃にて3
0分乾燥を行えば、短時間にて諸物性を得ることができ
る。(D) Next, a solvent-soluble fluororesin is used for the overcoat. The applied amount is such that the dry film thickness is 15 to 60 μm. The same coating method as that for the undercoating can be used. After coating, it cures at room temperature, but for example at 120 ° C
If drying is performed for 0 minutes, various physical properties can be obtained in a short time.
（作用） 本発明のステンレス塗装鋼板は、化成処理液中に特定
量以下のケイ酸塩を含有している。この特定量のケイ酸
塩は化成処理層の造膜性には何ら影響を与えない。さら
に、化成処理層の上に積層するエポキシプライマー層中
には、シランカップリング剤を含有している。したがっ
て、これら両層の環境面において、シランカップリング
剤がケイ酸塩と結合し、以下、実施例で明らかなよう
に、ゲージ圧7 kgf/cm2｛0.6865MPa｝、槽内温度約171
℃飽和蒸気圧のオートクレーブ中で、８時間という過酷
な条件においても、塗膜の密着性が良好であると共に、
溶剤可溶型フッソ樹脂系塗料層により優れた耐候性を発
揮するのではないかと考えられる。(Action) The stainless steel coated steel sheet of the present invention contains a specific amount or less of silicate in the chemical conversion treatment liquid. This specific amount of silicate has no effect on the film forming properties of the chemical conversion treatment layer. Furthermore, a silane coupling agent is contained in the epoxy primer layer laminated on the chemical conversion treatment layer. Therefore, in the environmental aspects of both layers, the silane coupling agent binds to the silicate, and the gauge pressure is 7 kgf / cm 2 {0.6865 MPa} and the temperature in the chamber is about 171
In an autoclave with a saturated vapor pressure of ° C, even under severe conditions of 8 hours, the adhesion of the coating film is good,
It is considered that the solvent-soluble fluorinated resin-based paint layer may exhibit excellent weather resistance.
（実施例１） フェライト系オーステナイト系のSUS430ステンレス鋼
板をオーカイト社製「オーカイト67」にて脱脂したの
ち、流水にて１分間洗浄を行った。つぎに乾燥炉で120
℃、５分間乾燥を行い、その後常温まで放冷した。この
後オーカイト社製「オーケムコート2000」 ５容量％溶
液中にステンレスを浸漬して処理した後に常温にて10分
間放置し、乾燥炉で100℃、５分間乾燥を行った。つぎ
に、下塗り層として第１表に示す粗成のエポキシプライ
マーを乾燥膜厚が40μとなるように塗装し、80℃、30分
間焼き付けた。さらに、これを常温まで放冷後、仕上げ
塗料層として、四国化研工業株式会社製「フッソロンエ
ナメル」を乾燥膜厚40μとなるように塗装し、120℃、2
0分間焼付けてステンレス塗料鋼板を得た。(Example 1) A ferritic austenitic SUS430 stainless steel plate was degreased with "Okaite 67" manufactured by Okaite Co., and then washed with running water for one minute. Next, drying oven 120
After drying at 5 ° C. for 5 minutes, the mixture was allowed to cool to room temperature. Thereafter, stainless steel was immersed in a 5% by volume solution of “Ochem Coat 2000” manufactured by Okaito Co., Ltd., and then left standing at room temperature for 10 minutes, followed by drying at 100 ° C. for 5 minutes in a drying oven. Next, as an undercoat layer, a coarse epoxy primer shown in Table 1 was applied so as to have a dry film thickness of 40 μm, and was baked at 80 ° C. for 30 minutes. Further, after allowing this to cool to room temperature, as a finish paint layer, `` Fussolone Enamel '' manufactured by Shikoku Chemical Industry Co., Ltd.
It was baked for 0 minutes to obtain a stainless steel plate.
（実施例２） 下塗り層として第１表に示した組成のエポキシプライ
マーを用い、焼付け時間を80℃、20分にした以外は実施
例１と同様にしてステンレス塗装鋼板を得た。(Example 2) A stainless steel coated steel sheet was obtained in the same manner as in Example 1 except that an epoxy primer having the composition shown in Table 1 was used as the undercoat layer, and the baking time was 80 ° C and 20 minutes.
（実施例３） フェライト系オーステナイト系のSUS430ステンレス鋼
板を日本パーカライジング社製「ファインクリーナー43
89」にて脱脂したのち、流水にて１分間洗浄を行った。
つぎに乾燥炉で120℃、５分間乾燥を行い、その後常温
まで放冷した。この後オーカイト社製「オーケムコート
2000」 ５容量％溶液をステンレス表面にスプレーして
乾燥炉で80℃、20分間乾燥を行った。つぎに、下塗り層
として第１表に示す組成のエポキシプライマーを乾燥膜
厚が40μとなるように塗装し、80℃20分間焼き付けた。
さらに、これを常温まで放冷後、仕上げ塗料層として、
四国化研工業株式会社製「フッソロンエナメル」を乾燥
膜厚40μとなるように塗装し、120℃、20分間焼付けて
ステンレス塗装鋼板を得た。(Example 3) Ferritic austenitic SUS430 stainless steel sheet was manufactured by Nippon Parkerizing Co., Ltd. “Fine Cleaner 43”.
89 ", and then washed with running water for 1 minute.
Next, drying was performed in a drying oven at 120 ° C. for 5 minutes, and then the mixture was allowed to cool to room temperature. After this, “Ochem Coat”
2000 "A 5% by volume solution was sprayed on a stainless steel surface and dried in a drying oven at 80 ° C for 20 minutes. Next, an epoxy primer having the composition shown in Table 1 was applied as an undercoat layer so as to have a dry film thickness of 40 μm, and baked at 80 ° C. for 20 minutes.
Furthermore, after allowing this to cool to room temperature, as a finish paint layer,
“Fussolone enamel” manufactured by Shikoku Chemical Industry Co., Ltd. was applied to a dry film thickness of 40 μm and baked at 120 ° C. for 20 minutes to obtain a stainless steel coated steel sheet.
（実施例４） 下塗り層として第１表に示した組成のエポキシプライ
マーを用い、20℃、８時間養生後、仕上げ塗料層とし
て、四国化研工業株式会社製「フッソロンエナメル」を
乾燥膜厚40μとなるように塗装し、20℃、３日間、常温
乾燥した以外は実施例３と同様にしてステンレス塗装鋼
板を得た。(Example 4) An epoxy primer having the composition shown in Table 1 was used as an undercoat layer, and after curing at 20 ° C for 8 hours, “Fussolone enamel” manufactured by Shikoku Chemical Industry Co., Ltd. was used as a finish paint layer in a dry film thickness. A stainless steel coated steel sheet was obtained in the same manner as in Example 3 except that the coating was performed so as to have a thickness of 40 μm and dried at room temperature at 20 ° C. for 3 days.
（比較例１） 化成処理を行わず、下塗り層として第１表に示した組
成のエポキシプライマーを用いた以外は実施例１と同様
にしてステンレス塗装鋼板を得た。(Comparative Example 1) A stainless steel coated steel sheet was obtained in the same manner as in Example 1, except that the chemical conversion treatment was not performed and an epoxy primer having the composition shown in Table 1 was used as the undercoat layer.
（比較例２） 下塗り層として、第１表に示したような、シランカッ
プリング剤を含有しないエポキシプライマーを用いた以
外は、実施例１と同様にしてステンレス塗装鋼板を得
た。(Comparative Example 2) A stainless steel coated steel sheet was obtained in the same manner as in Example 1, except that an epoxy primer containing no silane coupling agent as shown in Table 1 was used as the undercoat layer.
（比較例３） 下塗り層として、第１表に示したような、無機質粉体
を含有しないエポキシプライマーを用いた以外は、実施
例１と同様にしてステンレス塗装鋼板を得た。(Comparative Example 3) A stainless steel coated steel sheet was obtained in the same manner as in Example 1, except that an epoxy primer containing no inorganic powder was used as an undercoat layer as shown in Table 1.
（比較例４） 下塗り層として、第１表に示したような、本発明の規
定する範囲を越えた、多量の顔料を含有するエポキシプ
ライマーを用いた以外は、実施例１と同様にしてステン
レス塗装鋼板を得た。(Comparative Example 4) A stainless steel was prepared in the same manner as in Example 1 except that an epoxy primer containing a large amount of pigment exceeding the range specified in the present invention as shown in Table 1 was used as the undercoat layer. A coated steel plate was obtained.
（試験方法） 以上実施例１〜比較例４で得られえたステンレス塗装
鋼板を、JIS A 6205「鉄筋コンクリート用防せい剤」に
規定されたオートクレーブ装置に入れ、ゲージ圧7 kgf/
cm2｛0.6865MPa｝槽内温度約171℃飽和蒸気圧で８時間
加圧試験を行った。(Test Method) The stainless steel coated steel sheets obtained in Examples 1 to 4 were placed in an autoclave apparatus specified in JIS A 6205 “Anti-rusting agent for reinforced concrete”, and a gauge pressure of 7 kgf /
A pressurization test was conducted for 8 hours at a saturated vapor pressure of about 171 ° C. in a cm 2 {0.6865 MPa} tank.
（評価方法） ｉ）塗膜の外観 塗膜のふくれ・ひび割れ・はがれ等の異常の有無を目
視により観察を行った。(Evaluation method) i) Appearance of coating film The presence or absence of abnormalities such as blistering, cracking and peeling of the coating film was visually observed.
ii）鉛筆引っかき値 JIS K 5400 8.4.1により、塗膜の破れを評価する。ii) Pencil scratch value The coating film is evaluated for tearing according to JIS K 5400 8.4.1.
iii）碁盤目テープ試験 JIS K 5400 8.4.2により評価した。但し、切り傷の間
隔は2mmとし、ます目数は25にした。iii) Cross cut tape test Evaluated according to JIS K 5400 8.4.2. However, the interval between cuts was 2 mm, and the number of stitches was 25.
iv）耐塩水噴霧性試験 JIS K 5400 9.1に準じて1000時間後の塗膜表面の変化
を目視した。iv) Salt water spray resistance test A change in the coating film surface after 1000 hours was visually observed according to JIS K 5400 9.1.
ｖ）耐汚染性 屋外暴露１か年後のグレースケール値により、５を良
好、１を不良として５段階に識別した。v) Stain resistance The gray scale value after one year of outdoor exposure identified 5 as good and 1 as poor in 5 steps.
vi）促進耐候性試験 JIS K 5400 9.8.1に準じて、サンシャインウェザオメ
ーターで3000時間照射後の塗膜外観を目視した。また、
フェードオメーターで500時間照射後の塗膜外観を目視
した。vi) Accelerated weather resistance test According to JIS K 5400 9.8.1, the appearance of the coating film after irradiating with a sunshine weatherometer for 3000 hours was visually observed. Also,
The appearance of the coating film after 500 hours of irradiation with a fade meter was visually observed.
このような評価方法により、加圧試験前と加圧試験後
についてそれぞれ評価した。その結果を第２表に示す。According to such an evaluation method, evaluation was performed before and after the pressure test. Table 2 shows the results.
（効 果） 第２表の結果より、比較例のステンレス塗装鋼板は何
れも加圧後にブリスター（ふくれ）や剥離が発生してい
るのに対して、本発明のステンレス塗装鋼板は飽和蒸気
加圧という過酷な条件下においても、当初の塗膜物性を
維持し、耐候性、密着性等の表面物性に非常に優れてい
ることが明白である。 (Effects) According to the results in Table 2, all the stainless steel coated steel sheets of the comparative examples show blisters and peeling after pressurization, whereas the stainless steel coated steel sheets of the present invention have saturated steam pressure. It is clear that even under such severe conditions, the initial properties of the coating film are maintained and the surface properties such as weather resistance and adhesion are extremely excellent.
フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ３２Ｂ 15/08 １０２ Ｂ３２Ｂ 15/08 １０２Ｂ 27/30 27/30 Ｄ 27/38 27/38 Continued on the front page (51) Int.Cl. 6 Identification code FI B32B 15/08 102 B32B 15/08 102B 27/30 27/30 D 27/38 27/38
Claims (1)
面に、 主成分として、リン酸１重量部に対して、クロム酸４
〜８重量部、ケイ酸塩0.5重量部以下の比率からなる化
成処理液により、化成処理被膜が、乾燥時にクロムの付
着量で５〜50mg/m2となるようにスプレー塗装、流しか
け、浸漬塗装の何れかにより化成処理を行い、 その表面に、顔料重量濃度（PWC）が５〜40％であ
り、樹脂固形分に対して１〜10重量％のエポキシ系、ア
ミン系、メルカプト系より選ばれる少なくとも１種以上
のシランカップリング剤を含むエポキシ樹脂系プライマ
ーを塗装し、 さらに、溶剤可溶型フッソ樹脂系仕上げ塗料を塗装す
ることを特徴とするステンレス塗装鋼板の製造方法。1. The surface of a washed and degreased stainless steel plate is coated with chromic acid 4 with respect to 1 part by weight of phosphoric acid as a main component.
Spray coating, pouring, and immersing the chemical conversion coating with 5 to 50 mg / m 2 in the amount of chromium when dried with a chemical conversion liquid having a ratio of ８8 parts by weight and silicate 0.5 parts by weight or less. A chemical conversion treatment is performed by coating, and the surface has a pigment weight concentration (PWC) of 5 to 40%, and is selected from epoxy, amine, and mercapto based on 1 to 10% by weight based on the resin solid content. A method for producing a stainless steel coated steel sheet, comprising applying an epoxy resin-based primer containing at least one or more silane coupling agents, and further applying a solvent-soluble fluorinated resin-based finish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21059390A JP2975408B2 (en) | 1990-08-08 | 1990-08-08 | Manufacturing method of stainless steel coated steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21059390A JP2975408B2 (en) | 1990-08-08 | 1990-08-08 | Manufacturing method of stainless steel coated steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0494770A JPH0494770A (en) | 1992-03-26 |
| JP2975408B2 true JP2975408B2 (en) | 1999-11-10 |
Family
ID=16591893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21059390A Expired - Lifetime JP2975408B2 (en) | 1990-08-08 | 1990-08-08 | Manufacturing method of stainless steel coated steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2975408B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5326594A (en) * | 1992-12-02 | 1994-07-05 | Armco Inc. | Metal pretreated with an inorganic/organic composite coating with enhanced paint adhesion |
| JP2878066B2 (en) | 1993-05-24 | 1999-04-05 | シャープ株式会社 | Connection method of printed circuit board |
| JP4916467B2 (en) * | 2008-03-10 | 2012-04-11 | 日新製鋼株式会社 | Painted stainless steel sheet for roof and exterior and its manufacturing method |
-
1990
- 1990-08-08 JP JP21059390A patent/JP2975408B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0494770A (en) | 1992-03-26 |
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