JPH0847669A - Resin-coated metal material having excellent weather resistance and contamination resistance - Google Patents
Resin-coated metal material having excellent weather resistance and contamination resistanceInfo
- Publication number
- JPH0847669A JPH0847669A JP6184793A JP18479394A JPH0847669A JP H0847669 A JPH0847669 A JP H0847669A JP 6184793 A JP6184793 A JP 6184793A JP 18479394 A JP18479394 A JP 18479394A JP H0847669 A JPH0847669 A JP H0847669A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- resin layer
- metal material
- water
- resistance
- 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)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、樹脂被覆金属材に係
り、家電、建材、金属製家具、自動車などに利用される
樹脂被覆金属材、特に屋外で使用される建材、家電製品
などへの利用に供するのが好適な、耐候性、耐汚れ性に
優れた樹脂被覆金属材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin-coated metal material, and more particularly to a resin-coated metal material used for home appliances, building materials, metal furniture, automobiles, etc. The present invention relates to a resin-coated metal material that is suitable for use and has excellent weather resistance and stain resistance.
【０００２】[0002]
【従来の技術】従来、屋外で使用される材料として、フ
ッ素を含む樹脂で鋼板を被覆して耐候性を高めた、いわ
ゆるフッ素樹脂被覆金属板が知られている。このフッ素
樹脂被覆鋼板は、フッ素と炭素の結合エネルギーが、水
素と炭素の結合エネルギーよりも大きいことなどの理由
により、フッ素樹脂層の太陽光による劣化が他の樹脂に
比べて少なく、また、撥水性が高く耐食性にも優れるた
め、建材など、屋外での用途に広く用いられている。2. Description of the Related Art Conventionally known as a material used outdoors is a so-called fluororesin-coated metal plate in which a steel plate is coated with a resin containing fluorine to improve weather resistance. This fluororesin-coated steel sheet has less deterioration of the fluororesin layer due to sunlight than other resins due to the fact that the binding energy of fluorine and carbon is larger than the binding energy of hydrogen and carbon. Since it is highly water-based and has excellent corrosion resistance, it is widely used for outdoor applications such as building materials.
【０００３】しかし、フッ素樹脂被覆鋼板においては、
多くの場合屋外で使用されることから、空気中の塵埃が
付着してフッ素樹脂被覆層が汚れやすいという問題点が
ある。一般に、このフッ素樹脂鋼板は、メンテナンスを
行わないか、あるいは行うとしてもその回数は非常に少
ないので、汚れの付着により外観の低下を招き、商品価
値の低下を低下させるものであった。However, in the fluororesin-coated steel sheet,
In many cases, since it is used outdoors, there is a problem that dust in the air adheres and the fluororesin coating layer is easily soiled. In general, this fluororesin steel sheet is not maintained, or even if it is maintained, the number of times is very small, so that the appearance of the fluororesin steel sheet is deteriorated due to the adhesion of stains, which lowers the commercial value.
【０００４】このようにフッ素樹脂被覆鋼板において
は、汚れにより定期的な補修が必要となるために、耐汚
れ性を改善することはきわめて重要なことである。As described above, in the fluororesin-coated steel sheet, it is extremely important to improve the stain resistance, since the stain requires periodic repairs.
【０００５】前記の問題に対して、本出願人は、特開平
５−177766号公報において、耐候性、耐汚れ性に優れた
樹脂被覆金属材を開示した。この樹脂被覆金属材は、フ
ッ素を含む耐候性に優れた樹脂層の表面の汚れに注目
し、空気中の塵埃が樹脂被膜層表面の水滴に捕捉される
ことによって、汚れが発生するという知見に基づいてな
されたものであり、樹脂被覆層の水濡れ性を向上させる
ことにより水滴の乾燥時間が短縮され、ひいては耐汚れ
性が向上するというものである。With respect to the above problems, the present applicant has disclosed a resin-coated metal material having excellent weather resistance and stain resistance in Japanese Patent Laid-Open No. 5-177766. This resin-coated metal material pays attention to stains on the surface of the resin layer having excellent weather resistance containing fluorine, and the dust in the air is trapped by water droplets on the surface of the resin coating layer, which leads to the finding that stains occur. Based on the above, the water-wettability of the resin coating layer is improved, whereby the drying time of water droplets is shortened and the stain resistance is improved.
【０００６】[0006]
【発明が解決しようとする課題】上記公報で開示された
フッ素樹脂被覆金属材によれば、従来のフッ素樹脂被覆
金属材と比較して耐汚れ性が改善されるものの十分でな
く、また、一旦、付着した汚れの洗浄手段についての記
載はない。According to the fluororesin-coated metal material disclosed in the above publication, although the stain resistance is improved as compared with the conventional fluororesin-coated metal material, it is not sufficient. , There is no description about means for cleaning adhered dirt.
【０００７】したがって、本発明の課題は、耐候性に優
れる樹脂被覆金属材に対して、より汚れが付着しにく
く、雨水による洗浄効果の高い表面層を形成することに
より、より耐汚れ性に優れた、より高いメンテナンスフ
リー性の高い樹脂被覆金属材を提供することににある。[0007] Therefore, the object of the present invention is to provide a resin-coated metal material having excellent weather resistance, which is more resistant to dirt and which has a high cleaning effect by rainwater, and thus is more resistant to dirt. Another object of the present invention is to provide a resin-coated metal material having a higher maintenance-free property.
【０００８】この樹脂被覆金属材は、近年、都市景観の
重視あるいは人手不足などにより、屋外で使用される建
材においては、より高いメンテナンスフリー性が要求さ
れているに対して、合致するものである。ここに、耐汚
れ性とは、塵埃などによる汚れが付着しにくいことを意
味し、通常、耐汚染性と称される付着した汚れの落ち易
さではない。In recent years, the resin-coated metal material is suitable for building materials used outdoors because of the higher maintenance-free property required due to the importance of cityscape or lack of manpower. . Here, the dirt resistance means that dirt due to dust or the like does not easily adhere, and is not usually called dirt resistance, which is the ease of removing the adhered dirt.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決した本発
明は、外面にフッ素を含む樹脂層を少なくとも一部に有
し、その樹脂層の表面粗さがＪＩＳ−Ｂ０６０１で規定
されている中心線粗さＲａで０．０５μｍ以上０．４０
μｍ未満で、かつ抽出曲線の平均線からの高さ０．２μ
ｍをしきい値とする１インチあたりの山頂数で表した表
面粗さパラメータＰＰＩが５００未満であり、さらに前
記樹脂層表面の水滴接触角が６０度未満であることを特
徴とするものである。The present invention, which has solved the above-mentioned problems, has a resin layer containing fluorine on at least a part of its outer surface, and the surface roughness of the resin layer is defined by JIS-B0601. Line roughness Ra is 0.05 μm or more 0.40
less than μm and height 0.2μ from the average line of the extraction curve
The surface roughness parameter PPI expressed by the number of peaks per inch with m as a threshold value is less than 500, and the water droplet contact angle on the surface of the resin layer is less than 60 degrees. .
【００１０】ここに水滴接触角とは、図１に示すよう
に、８マイクロリットルのイオン交換水を滴下し、２３
℃５０％ＲＨ（相対湿度）雰囲気下で１分後に樹脂層Ｒ
の外面と水滴Ｗの外表面とが交わる点Ｐにおける水滴Ｗ
の接線Ｌと樹脂層Ｒ表面とがなす角度のことを言う。As used herein, the water droplet contact angle means that, as shown in FIG.
Resin layer R after 1 minute in a 50 ° C RH (relative humidity) atmosphere
W at the point P where the outer surface of the water and the outer surface of the water W intersect
Is the angle formed by the tangent line L to the surface of the resin layer R.
【００１１】[0011]
【作用】本発明者らは、樹脂被覆金属材の耐汚れ性をさ
らに改善すべく鋭意研究を重ねた結果、樹脂層表面の水
滴接触角が特定の範囲にあること、樹脂層の表面粗さが
前記のとおりが小さく特定範囲にあることにより、雨水
による汚れの洗浄効果が著しく高まることを知見したも
のである。さらに、本発明の具体的に説明すると次記の
とおりである。The present inventors have conducted extensive studies to further improve the stain resistance of the resin-coated metal material, and as a result, have found that the contact angle of water droplets on the surface of the resin layer is within a specific range, and the surface roughness of the resin layer. It has been found that the effect of cleaning the dirt caused by rainwater is remarkably enhanced when the above is small and falls within the specific range. Further, the present invention will be specifically described as follows.
【００１２】（１）本発明においては、金属材、たとえ
ば金属板を被覆する樹脂としてフッ素樹脂が用いられ
る。この場合、被覆樹脂全体がフッ素樹脂であるほか、
他の種類の樹脂の表面にフッ素樹脂を積層したものであ
ってもよい。すなわち、最外面がフッ素樹脂である条件
の下で、樹脂の種類および積層形態は適宜選択できる。(1) In the present invention, a fluororesin is used as a resin for coating a metal material such as a metal plate. In this case, the entire coating resin is fluororesin,
A fluororesin may be laminated on the surface of another type of resin. That is, under the condition that the outermost surface is a fluororesin, the type of resin and the laminated form can be appropriately selected.
【００１３】ここでいうフッ素樹脂としては、ポリテト
ラフルオロエチレン（ＰＴＦＥ）、ポリフッ化ビニリデ
ン（ＰＶＤＦ）、ポリフッ化ビニル（ＰＶＦ）などを例
示することができる。また、これらのフッ素樹脂と相溶
性良好な樹脂をブレンドしたものでなってもよく、この
ブレンド樹脂としてはアクリル樹脂が好適である。この
ブレンド比率は特に限定されないが、基材との密着性お
よび耐候性のバランスを考慮すると、ブレンド樹脂／フ
ッ素樹脂＝８０／２０〜１０／９０（ａｔ％）が好適で
ある。ただし、このブレンド樹脂は後述する被覆層の水
濡れ性を向上させるためのものではなく、加工性の改善
や、被膜形成のためのバインダー的に役割を担うもので
ある。Examples of the fluororesin herein include polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF) and the like. It may also be a blend of these fluororesins and a resin having a good compatibility, and an acrylic resin is preferable as the blend resin. The blending ratio is not particularly limited, but considering the balance between the adhesion to the substrate and the weather resistance, blended resin / fluorine resin = 80/20 to 10/90 (at%) is preferable. However, this blend resin does not serve to improve the water wettability of the coating layer described later, but plays a role as a binder for improving processability and forming a film.
【００１４】被覆樹脂層の膜厚は１０〜５０μｍである
ことが好ましい。１０μｍ未満だと、十分な耐候性が得
られず、一方５０μｍを超えると耐候性の改善の割りに
はコスト高となるからである。The thickness of the coating resin layer is preferably 10 to 50 μm. If it is less than 10 μm, sufficient weather resistance cannot be obtained, while if it exceeds 50 μm, the cost is high for the improvement of weather resistance.
【００１５】金属材としては、鋼材、亜鉛系めっき鋼
材、ステンレス鋼材などの鋼材他、アルミニウム、銅な
ど鋼以外の材質であってもよい。この中でも、本発明の
利点は、母材が鋼板である場合において顕著にあらわれ
る。また、金属材の表面にフッ素樹脂を被覆するに先立
ち、公知の化成処理を施したり、プライマー樹脂などを
被覆することもできる。The metal material may be a steel material such as a steel material, a zinc-based plated steel material, or a stainless steel material, or a material other than steel such as aluminum or copper. Among these, the advantages of the present invention are remarkable when the base material is a steel plate. Further, prior to coating the surface of the metal material with the fluororesin, a known chemical conversion treatment may be performed or a primer resin or the like may be coated.
【００１６】一般に、金属材に高い水濡れ性を付与する
ため、表面に樹脂を被覆する場合、耐候性の低い樹脂で
被覆すると、樹脂の光劣化により樹脂被覆金属材の外
観、特に色調が損なわれやすい。この樹脂の劣化によ
り、被膜としての防錆効果が著しく低減するため、腐食
が促進することが多い。そこで、耐候性の高いフッ素樹
脂で金属材を被覆すれば、樹脂の表面の性質である水濡
れ性にさほど影響されることなく、フッ素樹脂のもつ優
れた耐候性が支配的となり、全体として耐候性に優れた
ものとなる。Generally, in order to impart high water wettability to a metal material, when the surface is coated with a resin, if the resin is coated with a resin having low weather resistance, the appearance of the resin-coated metal material is deteriorated due to photodegradation of the resin. It is easy to get caught. Due to the deterioration of the resin, the rust preventive effect as a coating is significantly reduced, and thus corrosion is often accelerated. Therefore, if a metal material is coated with a highly weather-resistant fluororesin, the excellent weather resistance of the fluororesin becomes dominant without being significantly affected by the water wettability, which is the surface property of the resin, and the weather resistance as a whole is improved. It has excellent properties.
【００１７】被覆するフッ素樹脂としては、塗料または
フィルムの積層品が好ましい。フッ素樹脂の被覆方法
は、特に限定されない。フィルムを用いる場合には、通
常のラミネート方法で被覆すればよいし、塗料を用いる
場合にはロールコーティング、スプレー塗装などの慣用
手段によって塗装すればよい。The fluororesin to be coated is preferably a laminate of paint or film. The method for coating the fluororesin is not particularly limited. When a film is used, it may be coated by an ordinary laminating method, and when a paint is used, it may be coated by a conventional means such as roll coating or spray coating.
【００１８】（２）空気中の塵埃は水滴にトラップされ
て樹脂に付着する。水滴の乾燥時間は同じ体積であれ
ば、表面積に比例すると考えられ、水滴の表面積が大き
いほど水滴が存在する時間が短く、汚れの付着も少な
い。(2) Dust in the air is trapped in water droplets and adheres to the resin. It is considered that the drying time of the water droplets is proportional to the surface area if the volume is the same. The larger the surface area of the water droplets, the shorter the time the water droplets are present and the less the adhesion of dirt.
【００１９】通常の高分子樹脂被覆層の水濡れ性は、水
滴接触角の最大範囲で６０度〜１１２度の間であるが、
この場合、水滴接触角が６０度未満のものと比べて同体
積の水滴の表面積が小さくなり、乾燥時間が長くなるた
め汚れの付着が促進される。The water wettability of a usual polymer resin coating layer is between 60 ° and 112 ° in the maximum range of water droplet contact angle,
In this case, the surface area of the water droplet having the same volume is smaller than that of the water droplet having a contact angle of less than 60 degrees, and the drying time becomes long, so that the adhesion of dirt is promoted.
【００２０】したがって、乾燥時間を短くして、汚れの
付着を極力妨げるべく、樹脂被覆層表面の水濡れ性を水
滴接触角で６０度未満に限定した。水滴接触角は、より
好ましくは５０度以下である。Therefore, the water wettability of the surface of the resin coating layer is limited to less than 60 degrees in terms of water droplet contact angle in order to shorten the drying time and prevent the attachment of dirt as much as possible. The water droplet contact angle is more preferably 50 degrees or less.
【００２１】（３）樹脂被覆層の水濡れ性を、本発明で
規定する水滴接触角で６０度未満に制御する方法として
は、プラズマ表面改質、火炎処理、オゾン処理のいずれ
を用いてもよい。あるいは、フッ素樹脂中に、水濡れ性
が高く、表面に濃化しやすい樹脂を練り込んでもよく、
特に限定されるものではない。このとき、フッ素樹脂中
に練り込む樹脂としては、ポリビニルアセタール樹脂、
ポリビニルエーテル、ポリビニルアルコール、セルロー
ス、ナイロン、ポリメチルメタクリレートなどを挙ける
ことができるが、このうち耐候性の点でポリビニルアセ
タール、ポリビニルエーテルが特に好ましい。(3) As a method for controlling the water wettability of the resin coating layer to less than 60 degrees in terms of the contact angle of water droplets defined in the present invention, any of plasma surface modification, flame treatment and ozone treatment may be used. Good. Alternatively, the fluororesin may be kneaded with a resin that has high water wettability and tends to thicken on the surface,
It is not particularly limited. At this time, as the resin to be kneaded into the fluororesin, polyvinyl acetal resin,
Polyvinyl ether, polyvinyl alcohol, cellulose, nylon, polymethylmethacrylate and the like can be mentioned, and among them, polyvinyl acetal and polyvinyl ether are particularly preferable from the viewpoint of weather resistance.
【００２２】フッ素樹脂を火炎処理する場合には、使用
するフッ素樹脂に合わせてガスの組成を適宜選択する
が、火炎処理では水濡れ性を極端に向上させることはで
きない（５０度程度が限度）ため、さらにプラズマ表面
改質を行うことが好ましい。こきためのプラズマとして
は、低温のプラズマであれば、グロー放電、コロナ放
電、無声放電のいずれを用いても良く、特に限定されな
い。プラズマ照射の条件としては、投入パワー１Ｗ／ｃ
ｍ3 以上、処理時間３０秒以上、被処理物の温度をフッ
素樹脂の軟化点以上とすることが望ましい。When the fluororesin is subjected to flame treatment, the gas composition is appropriately selected in accordance with the fluororesin used, but the flame treatment cannot extremely improve the water wettability (up to about 50 degrees). Therefore, it is preferable to further perform plasma surface modification. As the plasma for scraping, any glow discharge, corona discharge, or silent discharge may be used as long as it is a low-temperature plasma, and is not particularly limited. The plasma irradiation conditions are as follows: input power 1 W / c
It is desirable that the temperature of the object to be treated is at least the softening point of the fluororesin, at least m 3 and for a treatment time of 30 seconds.
【００２３】（４）一方、樹脂被覆金属材のメンテナン
スフリー性を高めるため、いったん付着した汚れが雨水
によって洗浄されるか否かについて、本発明者等は鋭意
研究を行った。その結果、樹脂層表面の水滴接触角を６
０度未満であることのほか、樹脂被覆層の表面の粗さを
小さくすることが、耐汚れ性を向上し、雨水による汚れ
の洗浄効果が著しく向上するために必要であることを知
見した。(4) On the other hand, in order to enhance the maintenance-free property of the resin-coated metal material, the inventors of the present invention have conducted diligent research as to whether or not stains once attached are washed by rainwater. As a result, the water droplet contact angle on the surface of the resin layer was 6
In addition to being less than 0 degree, it was found that it is necessary to reduce the surface roughness of the resin coating layer in order to improve the stain resistance and to significantly improve the effect of cleaning the stain by rainwater.
【００２４】すなわち、樹脂被覆層の表面が、ＪＩＳ−
Ｂ０６０１に記載されている中心線粗さＲａで０．４μ
ｍ以上の場合には、水滴接触角が６０度未満であっても
耐汚れ性改善の効果が小さく、外観的にも低下が著しか
った。したがって、本発明では、樹脂被覆層の表面粗さ
が０．４μｍ未満と限定される。特に好ましくは０．３
５μｍ未満である。また、Ｒａが０．０５μｍ未満では
被覆層の光沢が大きく鮮映性も高くなり、屋外で使用す
る材料としては外観が好ましくないため、０．０５μｍ
以上と限定した。That is, the surface of the resin coating layer is JIS-
The center line roughness Ra described in B0601 is 0.4 μ.
When it was m or more, even if the contact angle of water droplets was less than 60 degrees, the effect of improving the stain resistance was small, and the appearance was significantly deteriorated. Therefore, in the present invention, the surface roughness of the resin coating layer is limited to less than 0.4 μm. Particularly preferably 0.3
It is less than 5 μm. Further, when Ra is less than 0.05 μm, the coating layer has a large gloss and a high image clarity, and the appearance is not preferable as a material used outdoors, so 0.05 μm
Limited to the above.
【００２５】（５）中心線からの高さ０．２μｍをしき
い値とした場合の１インチあたりの山頂数で表した表面
粗さパラメータＰＰＩを５００以上とすると、（４）で
説明したのと同様に、耐汚れ性および材料の外観が著し
く低下するので、本発明では、中心線からの高さ０．２
μｍをしきい値とした場合の１インチあたりの山頂数で
表した表面粗さパラメータＰＰＩを５００未満と限定し
た。より好ましくは、４５０未満とする。(5) Assuming that the surface roughness parameter PPI expressed by the number of peaks per inch when the height from the center line is 0.2 μm is a threshold value is 500 or more, the explanation is given in (4). Similar to the above, the stain resistance and the appearance of the material are remarkably deteriorated.
The surface roughness parameter PPI expressed as the number of peaks per inch when μm was used as the threshold value was limited to less than 500. More preferably, it is less than 450.
【００２６】（６）かかる表面粗さを制御する順序は特
に限定しない。樹脂被覆層がフィルムであれば、フィル
ムの段階でロールを用いて制御してもよいし、ラミネー
ト後に制御してもよい。また、塗装により樹脂被覆層を
形成する場合には、塗装焼付後に制御すればよい。ま
た、表面粗さを制御する方法についても特に限定はしな
い。ロールを用いてもよいし、プラズマ照射などによっ
てもよい。(6) The order of controlling the surface roughness is not particularly limited. If the resin coating layer is a film, it may be controlled using a roll at the film stage, or may be controlled after lamination. Further, when the resin coating layer is formed by coating, it may be controlled after baking the coating. Also, the method of controlling the surface roughness is not particularly limited. A roll may be used, or plasma irradiation or the like may be used.
【００２７】[0027]
【実施例】以下、本発明の効果を、実施例により具体的
に説明する。 （実施例１）溶融亜鉛めっき鋼板上に前処理を施し、エ
ポキシ系接着剤（大日本インキ社製「ファインタフ」）
を１０ｇ／ｍ2 塗布焼付けした後、表１に示す種々の表
面粗さに予め制御されたフッ素樹脂のクリアーフィルム
（２５μｍ厚）を、板温１６０℃、ラインスピード１０
ｍ／ｍｉｎ、線圧３０Ｋｇ／ｃｍの条件でラミネート
し、その表面にＡｒ、Ｏ2 のプラズマを照射した。な
お、ラミネート段階では表面粗さはフィルム段階と変わ
っていない。EXAMPLES The effects of the present invention will be specifically described below with reference to examples. (Example 1) A hot dip galvanized steel sheet was pre-treated and an epoxy adhesive ("Fine Tough" manufactured by Dainippon Ink and Chemicals, Inc.)
10 g / m 2 was applied and baked, and then a fluororesin clear film (25 μm thick) whose surface roughness was controlled in advance as shown in Table 1 was applied at a plate temperature of 160 ° C. and a line speed of 10
Lamination was carried out under the conditions of m / min and a linear pressure of 30 kg / cm, and the surface thereof was irradiated with plasma of Ar and O 2 . The surface roughness at the laminating stage is the same as that at the film stage.
【００２８】[0028]
【表１】 [Table 1]
【００２９】Ａｒプラズマ処理の条件は、ガス流量６０
０ｃｍ3 （ＳＴＰ）／ｍｉｎ．、圧力０．８Ｔｏｒｒ、
印加電力３００Ｗ、放電時間３０秒、６０秒である。The condition of the Ar plasma treatment is that the gas flow rate is 60.
0 cm 3 (STP) / min. , Pressure 0.8 Torr,
The applied power is 300 W and the discharge time is 30 seconds and 60 seconds.
【００３０】Ｏ2 プラズマ処理の条件は、ガス流量１０
０ｃｍ3 （ＳＴＰ）／ｍｉｎ．、圧力０．１Ｔｏｒｒ、
印加電力３００Ｗ、放電時間３０秒、６０秒である。The condition of the O 2 plasma treatment is that the gas flow rate is 10
0 cm 3 (STP) / min. , Pressure 0.1 Torr,
The applied power is 300 W and the discharge time is 30 seconds and 60 seconds.
【００３１】これらの供試材を屋外に６か月暴露し、そ
の汚れおよび耐候性について評価した。試験は、屋外暴
露後の色差、流水をかけながらガーゼで汚れを拭き取っ
た後の色差および光沢度変化を測定することにより行っ
た。すなわち、表２および表３に示すように、３か月暴
露後の水洗前の供試材の色差、流水およびガーゼ洗浄後
の色差および同光沢度変化、流水およびガーゼ洗浄後の
供試材をさらに３か月屋外暴露した後の水洗前の供試材
の色差、同供試材の流水およびガーゼ洗浄後の色差およ
び同光沢度変化、ならびに当初の供試材をそのまま６か
月屋外暴露した後の色差について調べた。屋外暴露後の
色差は水洗前の供試材について測定した結果である。流
水＋ガーゼ洗浄後の色差および光沢度変化は耐候性の目
安になる値である。結果を表２および表３に併せて示
す。These test materials were exposed outdoors for 6 months, and their stains and weather resistance were evaluated. The test was performed by measuring the color difference after outdoor exposure, the color difference after wiping off dirt with gauze while applying running water, and the change in glossiness. That is, as shown in Tables 2 and 3, the color difference of the test material before water washing after 3 months of exposure, the color difference after washing with running water and gauze and the same gloss change, and the test material after washing with running water and gauze were measured. Further, after the outdoor exposure for 3 months, the color difference of the test material before water washing, the color difference and the change in glossiness of the test material after running water and gauze cleaning, and the initial test material were exposed to the outdoor for 6 months. The color difference after that was examined. The color difference after outdoor exposure is the result of measurement on the test material before washing with water. The color difference and the change in glossiness after washing with running water + gauze are values that are indicators of weather resistance. The results are also shown in Tables 2 and 3.
【００３２】[0032]
【表２】 [Table 2]
【００３３】[0033]
【表３】 [Table 3]
【００３４】表中の外観の評価は目視によって行い、下
記の通り評価した。 ◎；外観良好 △；外観が若干劣る ×；肌荒れが目立つ、あるいは光沢度が高すぎて乱反射
が目立つため外観が良好でない。The appearance in the table was visually evaluated and evaluated as follows. ⊚: Appearance is good Δ: Appearance is slightly inferior ×: Rough skin is noticeable, or the glossiness is too high and diffuse reflection is noticeable, so the appearance is not good.
【００３５】表２、表３より、Ｒａが０．４μｍ未満、
そしてＰＰＩが５００未満の樹脂被覆層をプラズマ表面
改質によって水滴接触角が６０度未満に制御することに
より、耐候性は変化せず、その耐汚れ付着性が著しく向
上しているのが認められた。From Tables 2 and 3, Ra is less than 0.4 μm,
By controlling the contact angle of water droplets to less than 60 degrees by modifying the surface of the resin coating layer having a PPI of less than 500 by the plasma surface modification, the weather resistance does not change and it is recognized that the stain resistance is significantly improved. It was
【００３６】（実施例２）溶融亜鉛めっき鋼板上にポリ
ビニリデンフルオライド（以下、ＰＶｄＦという）７０
wt％、アクリル樹脂２０wt％、練り込み用親水性樹脂と
してポリビニールアセタール樹脂１０wt％からなる塗料
を塗装焼付けして供試材を作製し、屋外暴露に供した。(Example 2) Polyvinylidene fluoride (hereinafter referred to as PVdF) 70 was formed on a hot-dip galvanized steel sheet.
A coating material consisting of wt%, acrylic resin 20 wt%, and polyvinyl acetal resin 10 wt% as a hydrophilic resin for kneading was applied and baked to prepare a test material, which was subjected to outdoor exposure.
【００３７】また、供試材として、上記サイディングボ
ード上にシリコンポリエステル樹脂塗料（クリアー）を
同様にスプレー塗装したもの、練り込み樹脂を添加しな
いＰＶｄＦ８０wt％、アクリル樹脂２０wt％からなるク
リアー樹脂を塗布したものも用いた。被膜の厚みは、す
べて３５μｍに統一した。これらの供試材を表４に示す
種々のロールを用いて粗さの調節を行い、その後屋外に
６か月暴露し、その汚れおよび耐候性について評価し
た。Further, as a test material, a silicone polyester resin paint (clear) was similarly spray-coated on the siding board, and a clear resin consisting of 80 wt% PVdF containing no kneading resin and 20 wt% acrylic resin was applied. Also used. The film thicknesses were all unified to 35 μm. The roughness of these test materials was adjusted using various rolls shown in Table 4, and then the samples were exposed to the outdoors for 6 months, and their stains and weather resistance were evaluated.
【００３８】その結果を表５に示す。ここで、屋外暴露
後の色差は水洗前の供試材について測定した結果であ
り、耐汚れ性の目安になる値である。The results are shown in Table 5. Here, the color difference after outdoor exposure is a result of measurement of the test material before washing with water, and is a value that is a standard for stain resistance.
【００３９】[0039]
【表４】 [Table 4]
【００４０】[0040]
【表５】 [Table 5]
【００４１】表５より、樹脂の練り込み材をロールで粗
さを制御することにより、耐候性、外観を損なうことな
く、その耐汚れ付着性が向上しているのが認められた。
また、試験番号２７においては、供試材がＹであったた
め、水滴接触角が６０度以上となり、耐汚れ性が劣るこ
ととなった。From Table 5, it was confirmed that by controlling the roughness of the resin kneading material with a roll, the stain resistance was improved without impairing the weather resistance and the appearance.
Further, in Test No. 27, since the test material was Y, the contact angle with water drops was 60 degrees or more, and the stain resistance was poor.
【００４２】以上、実施例１、実施例２の結果から、樹
脂被覆金属板表面の水濡れ性を向上させ、かつその表面
粗さを制御することにより、耐候性および外観を低下さ
せることなく、耐汚れ性をこれまで以上に向上させられ
ることが判明した。As described above, from the results of Examples 1 and 2, by improving the water wettability of the resin-coated metal plate surface and controlling the surface roughness thereof, the weather resistance and the appearance are not deteriorated. It has been found that the stain resistance can be further improved.
【００４３】[0043]
【発明の効果】以上の説明から明らかなとおり、本発明
によれば、耐候性に優れる樹脂被覆金属材であって、耐
汚れ性が高く、外観性に優れたメンテナンスフリー性を
有する樹脂被覆金属材を提供することが可能となる。As is apparent from the above description, according to the present invention, a resin-coated metal material having excellent weather resistance, having high stain resistance and excellent appearance, and maintenance-free property is provided. It is possible to provide the material.
【図１】本発明における水滴接触角の定義を示す説明図
である。FIG. 1 is an explanatory diagram showing the definition of a water droplet contact angle in the present invention.
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０５Ｄ 5/00 Ｋ 7415−4Ｆ Continuation of front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location B05D 5/00 K 7415-4F
Claims (1)
部に有し、その樹脂層の表面粗さがＪＩＳ−Ｂ０６０１
で規定されている中心線粗さＲａで０．０５μｍ以上
０．４０μｍ未満で、かつ抽出曲線の平均線からの高さ
０．２μｍをしきい値とする１インチあたりの山頂数で
表した表面粗さパラメータＰＰＩが５００未満であり、
さらに前記樹脂層表面の下記に定義される水滴接触角が
６０度未満であることを特徴とする耐候性、耐汚れ性に
優れた樹脂被覆金属材。 水滴接触角：８マイクロリットルのイオン交換水を滴下
し、２３℃５０％ＲＨ（相対湿度）雰囲気下で１分後に
樹脂層の外面と水滴の外表面とが交わる点における水滴
の接線と樹脂層表面とがなす角度。1. A resin layer containing fluorine is provided on at least part of the outer surface, and the surface roughness of the resin layer is JIS-B0601.
Surface with a center line roughness Ra of 0.05 μm or more and less than 0.40 μm and a height of 0.2 μm from the average line of the extraction curve as a threshold value, expressed as the number of peaks per inch. The roughness parameter PPI is less than 500,
Further, a resin coated metal material having excellent weather resistance and stain resistance, characterized in that a contact angle of water droplets defined below on the surface of the resin layer is less than 60 degrees. Water droplet contact angle: 8 microliters of ion-exchanged water was dropped, and after 1 minute at 23 ° C. and 50% RH (relative humidity) atmosphere, the tangent line of the water droplet and the resin layer at the point where the outer surface of the resin layer and the outer surface of the water droplet intersect. The angle formed by the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6184793A JPH0847669A (en) | 1994-08-05 | 1994-08-05 | Resin-coated metal material having excellent weather resistance and contamination resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6184793A JPH0847669A (en) | 1994-08-05 | 1994-08-05 | Resin-coated metal material having excellent weather resistance and contamination resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0847669A true JPH0847669A (en) | 1996-02-20 |
Family
ID=16159394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6184793A Pending JPH0847669A (en) | 1994-08-05 | 1994-08-05 | Resin-coated metal material having excellent weather resistance and contamination resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0847669A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018025450A1 (en) * | 2016-08-02 | 2018-02-08 | 日新製鋼株式会社 | Painted metal plate and method for manufacturing same |
| JP2018023963A (en) * | 2016-08-02 | 2018-02-15 | 日新製鋼株式会社 | Coated metal plate and method for manufacturing the same |
| WO2018180831A1 (en) * | 2017-03-29 | 2018-10-04 | 日新製鋼株式会社 | Coated metal plate and production method therefor |
| JP2018196877A (en) * | 2017-03-29 | 2018-12-13 | 日新製鋼株式会社 | Coated metal plate and manufacturing method for the same |
| WO2020004083A1 (en) * | 2018-06-26 | 2020-01-02 | ダイキン工業株式会社 | Molded article and production method therefor |
| JP2020002341A (en) * | 2018-06-26 | 2020-01-09 | ダイキン工業株式会社 | Molded article and method for manufacturing the same |
| CN113275229A (en) * | 2017-10-23 | 2021-08-20 | Mec株式会社 | Method for producing film-forming base material, and surface treatment agent |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61186111A (en) * | 1985-02-14 | 1986-08-19 | Kobe Steel Ltd | Aluminum and aluminum alloy plate for fluorocarbon resin coating |
| JPS63151380A (en) * | 1986-12-15 | 1988-06-23 | Taiyo Seiko Kk | Surface-treated metal plate |
| JPH03112647A (en) * | 1989-09-27 | 1991-05-14 | Kawatetsu Galvanizing Co Ltd | Film-laminated steel board with excellent heat conductivity for cooking utensil |
| JPH04146131A (en) * | 1990-10-08 | 1992-05-20 | Nippon Carbide Ind Co Inc | Method for sealing resin laminated metal |
| JPH04197472A (en) * | 1990-11-29 | 1992-07-17 | Sumitomo Metal Ind Ltd | Method for improving adhesiveness of coated steel plate |
| JPH04371116A (en) * | 1991-06-19 | 1992-12-24 | Toho Kasei Kk | Heatingf container and its manufacture |
| JPH05177766A (en) * | 1991-12-27 | 1993-07-20 | Sumitomo Metal Ind Ltd | Resin coated metal material excellent in weatherability and antistaining properties |
| JPH0639350A (en) * | 1992-07-24 | 1994-02-15 | Asahi Glass Co Ltd | Fluorine resin coated transportation equipment |
| JPH06134925A (en) * | 1992-10-23 | 1994-05-17 | Sumitomo Metal Ind Ltd | Resin coated metal material and production thereof |
-
1994
- 1994-08-05 JP JP6184793A patent/JPH0847669A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61186111A (en) * | 1985-02-14 | 1986-08-19 | Kobe Steel Ltd | Aluminum and aluminum alloy plate for fluorocarbon resin coating |
| JPS63151380A (en) * | 1986-12-15 | 1988-06-23 | Taiyo Seiko Kk | Surface-treated metal plate |
| JPH03112647A (en) * | 1989-09-27 | 1991-05-14 | Kawatetsu Galvanizing Co Ltd | Film-laminated steel board with excellent heat conductivity for cooking utensil |
| JPH04146131A (en) * | 1990-10-08 | 1992-05-20 | Nippon Carbide Ind Co Inc | Method for sealing resin laminated metal |
| JPH04197472A (en) * | 1990-11-29 | 1992-07-17 | Sumitomo Metal Ind Ltd | Method for improving adhesiveness of coated steel plate |
| JPH04371116A (en) * | 1991-06-19 | 1992-12-24 | Toho Kasei Kk | Heatingf container and its manufacture |
| JPH05177766A (en) * | 1991-12-27 | 1993-07-20 | Sumitomo Metal Ind Ltd | Resin coated metal material excellent in weatherability and antistaining properties |
| JPH0639350A (en) * | 1992-07-24 | 1994-02-15 | Asahi Glass Co Ltd | Fluorine resin coated transportation equipment |
| JPH06134925A (en) * | 1992-10-23 | 1994-05-17 | Sumitomo Metal Ind Ltd | Resin coated metal material and production thereof |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2017305901B2 (en) * | 2016-08-02 | 2019-10-03 | Nippon Steel Nisshin Co., Ltd. | Painted metal plate and method for manufacturing same |
| AU2017305901A1 (en) * | 2016-08-02 | 2019-02-21 | Nippon Steel Nisshin Co., Ltd. | Painted metal plate and method for manufacturing same |
| WO2018025450A1 (en) * | 2016-08-02 | 2018-02-08 | 日新製鋼株式会社 | Painted metal plate and method for manufacturing same |
| CN109562409B (en) * | 2016-08-02 | 2020-03-10 | 日新制钢株式会社 | Coated metal plate and method for producing same |
| KR20190088579A (en) * | 2016-08-02 | 2019-07-26 | 닛테츠 닛신 세이코 가부시키가이샤 | Painted metal plate and method for manufacturing same |
| KR20190019206A (en) * | 2016-08-02 | 2019-02-26 | 닛신 세이코 가부시키가이샤 | Coated metal plate and its manufacturing method |
| CN109562409A (en) * | 2016-08-02 | 2019-04-02 | 日新制钢株式会社 | Coated metal plate and its manufacturing method |
| JP2018023963A (en) * | 2016-08-02 | 2018-02-15 | 日新製鋼株式会社 | Coated metal plate and method for manufacturing the same |
| WO2018180831A1 (en) * | 2017-03-29 | 2018-10-04 | 日新製鋼株式会社 | Coated metal plate and production method therefor |
| JP2018196877A (en) * | 2017-03-29 | 2018-12-13 | 日新製鋼株式会社 | Coated metal plate and manufacturing method for the same |
| RU2718938C1 (en) * | 2017-03-29 | 2020-04-15 | Ниппон Стил Ниссин Ко., Лтд. | Coated metal sheet and a method for production thereof |
| CN113275229A (en) * | 2017-10-23 | 2021-08-20 | Mec株式会社 | Method for producing film-forming base material, and surface treatment agent |
| JP2020002341A (en) * | 2018-06-26 | 2020-01-09 | ダイキン工業株式会社 | Molded article and method for manufacturing the same |
| WO2020004083A1 (en) * | 2018-06-26 | 2020-01-02 | ダイキン工業株式会社 | Molded article and production method therefor |
| EP3816214A4 (en) * | 2018-06-26 | 2022-03-09 | Daikin Industries, Ltd. | Molded article and production method therefor |
| TWI764010B (en) * | 2018-06-26 | 2022-05-11 | 日商大金工業股份有限公司 | Molded product and method for producing the same |
| US12054566B2 (en) | 2018-06-26 | 2024-08-06 | Daikin Industries, Ltd. | Molded article and production method therefor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5846645A (en) | Fluorocarbon resin-coated product | |
| JP4769112B2 (en) | Aluminum coating material and aluminum fin material for heat exchanger using the same | |
| JPH0847669A (en) | Resin-coated metal material having excellent weather resistance and contamination resistance | |
| JP5411585B2 (en) | Multi-layer surface-treated galvanized steel sheet | |
| JP2011235457A (en) | Metal coating material | |
| JPH11207861A (en) | Precoated steel sheet | |
| JPH05177766A (en) | Resin coated metal material excellent in weatherability and antistaining properties | |
| JP5532022B2 (en) | Painted steel plate | |
| JP2745384B2 (en) | Film-coated metal plate | |
| JP2000117889A (en) | Fluoroplastic coated metal plate | |
| JP2745385B2 (en) | Film-coated metal plate | |
| JP2639735B2 (en) | Painted metal plate | |
| JPH06134925A (en) | Resin coated metal material and production thereof | |
| JP2002137329A (en) | Matte clear coated stainless steel panel excellent in detergent resistance | |
| JPH0132774B2 (en) | ||
| WO2021199876A1 (en) | Fin material formed of aluminum | |
| JPH09143423A (en) | Coating composition for metal plate, resin-coated metal plate produced by using the composition and its production | |
| JP2006182015A (en) | Fluorine-based resin coated aluminum material which is excellent in anti-fouling property | |
| JPH1067069A (en) | Film coated metal sheet | |
| JPS6051424B2 (en) | Synthetic resin coated decorative steel sheet and its manufacturing method | |
| CN117120795A (en) | Aluminum fin material | |
| JPH10277476A (en) | Surface treated metallic plate excellent in soil resistance and its production | |
| JPH05309786A (en) | Resin laminated metal | |
| JPS6051425B2 (en) | Vinyl chloride coated steel sheet and its manufacturing method | |
| JPH10314664A (en) | Precoated steel sheet excellent in resistance to staining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040730 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040927 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20041112 |