JP2645495B2 - Electrodeposition method and electrodeposition paint - Google Patents
Electrodeposition method and electrodeposition paintInfo
- Publication number
- JP2645495B2 JP2645495B2 JP20239088A JP20239088A JP2645495B2 JP 2645495 B2 JP2645495 B2 JP 2645495B2 JP 20239088 A JP20239088 A JP 20239088A JP 20239088 A JP20239088 A JP 20239088A JP 2645495 B2 JP2645495 B2 JP 2645495B2
- Authority
- JP
- Japan
- Prior art keywords
- parts
- electrodeposition
- weight
- resin
- magnetization
- 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 - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
- C09D5/448—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications characterised by the additives used
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
Description
【発明の詳細な説明】 技術分野 本発明はエッジ部のカバリング、塗面平滑性、および
防錆性に優れた塗膜を得るための電着塗装方法、ならび
に該塗装法に用いられる電着塗料に関するものである。Description: TECHNICAL FIELD The present invention relates to an electrodeposition coating method for obtaining a coating film having excellent edge covering, smoothness of coating surface, and rust prevention, and an electrodeposition coating material used in the coating method. It is about.
従来技術 電着塗装法は構造物内部へも塗装が可能であるため、
自動車関連業界および一般工業用業界に広く応用されて
いる。また、その塗装物の構造上、塗膜が付きにくい端
面が多く有り、現状、その部分の多くは、シーラー、防
錆ワックス等で対応している。Prior art Since the electrodeposition coating method can paint inside the structure,
Widely applied to the automotive related industry and general industrial industry. Further, due to the structure of the painted product, there are many end faces on which a coating film is difficult to be applied, and at present, most of the portions are covered by a sealer, a rust-proof wax, or the like.
発明が解決しようとする問題点 しかしながら、シーラー、防錆ワックス等による対応
では効果が不充分で、エッジ部のカバリング、塗面平滑
性が優れ、充分な防錆効果を示しうる塗装方法の開発が
望まれている。かかる問題点を解決するための新規な電
着塗装方法ならびに該方法に用いられる電着塗料を提供
することが本発明目的である。Problems to be Solved by the Invention However, the effect of using a sealer, a rust preventive wax, etc. is insufficient, and the development of a coating method capable of exhibiting a sufficient rust preventive effect with excellent edge covering, excellent coating surface smoothness, and the like. Is desired. It is an object of the present invention to provide a novel electrodeposition coating method for solving such a problem and an electrodeposition coating used in the method.
問題点を解決するための手段 本発明に従えば、上記発明目的が、 磁化量0.3〜90emu/gの磁化機能を有する材料を塗料固
形分比で0.01〜30重量％含む電着塗料を、被塗物に対
し、磁気作用下に電着塗装することを特徴とする電着塗
装方法により達成せられる。Means for Solving the Problems According to the present invention, the object of the present invention is to provide an electrodeposition coating material containing a material having a magnetization function of a magnetization amount of 0.3 to 90 emu / g in a coating solid content ratio of 0.01 to 30% by weight. It is achieved by an electrodeposition coating method, which comprises applying an electrodeposition coating to a coating under magnetic action.
本発明はカチオン型あるいはアニオン型電着塗料にあ
る特定範囲の磁化量をもつ磁化機能を有する材料を特定
量配合してなる組成物を、磁気作用下に電着塗装するこ
とにより、エッジ部の高度の端面防錆が得られることの
発見に基づいてなされたものである。The present invention provides a composition comprising a specific amount of a material having a magnetization function having a specific range of magnetization in a cationic or anionic type electrodeposition coating composition, and applying the electrodeposition coating under magnetic action to form an edge portion. This is based on the discovery that a high degree of end face rust prevention can be obtained.
本発明に用いるアニオン型電着塗料の主展色剤として
は、通常のアニオン性樹脂が使える。例えば、特公昭49
−24566号公報記載のマレイン化油樹脂が挙げられる。As the main developing agent of the anionic electrodeposition coating used in the present invention, a usual anionic resin can be used. For example,
And maleated oil resins described in JP-A-24566.
また、本発明に用いるカチオン型電着塗料の主展色剤
としては、通常のカチオン性樹脂が使える。例えば、特
公昭52−6306号公報、特公昭55−34238号公報、特公昭5
6−22912号公報、および特公昭56−34186号公報に記述
されている。In addition, as a main colorant of the cationic electrodeposition paint used in the present invention, a usual cationic resin can be used. For example, Japanese Patent Publication No. 52-6306, Japanese Patent Publication No. 55-34238, Japanese Patent Publication No.
This is described in JP-A-6-22912 and JP-B-56-34186.
本発明に使用する樹脂は、これらのいずれの樹脂であ
ってもよいが、特に好ましくは、エポキシ樹脂とアミノ
基を有する化合物との反応によって得られるカチオン樹
脂である。もちろん、これに限定されるものでなく、塩
基性基を有するフェノール樹脂、ポリブタジエン樹脂、
アクリルニトリル樹脂、スチレン樹脂、マレインジエン
化合物樹脂とこれらの共重合樹脂であってもよい。The resin used in the present invention may be any of these resins, but is particularly preferably a cationic resin obtained by reacting an epoxy resin with a compound having an amino group. Of course, it is not limited to this, phenol resin having a basic group, polybutadiene resin,
An acrylonitrile resin, a styrene resin, a maleene diene compound resin and a copolymer resin thereof may be used.
本発明で用いられる磁化機能を有する材料は、 一般式 MFe2O4 （式中Ｍは２価金属） で表されるフェライト、例えば、コバルトフェライド
（CoFe2O4）、銅フェライト（CuFe2O4）、亜鉛フェライ
ト（ZnFe2O4）、マンガンフェライト（MnFe2O4）、ニッ
ケルフェライト（NiFe2O4）、マグネシウムフェライト
（MgFe2O4）、バリ複合フェライト；フェライトと高分
子複合材、例えば特開昭59−111929号、同63−065085
号、同62−075494号公報等に記載のフェライトメッキ樹
脂粒子；マグネタイト高分子複合材；等；マグネタイト
（Fe3O4）；γ−酸化鉄（Fe2O3）等である。The material having a magnetizing function used in the present invention is a ferrite represented by the general formula MFe 2 O 4 (where M is a divalent metal), for example, cobalt ferrite (CoFe 2 O 4 ), copper ferrite (CuFe 2 O 4 ), zinc ferrite (ZnFe 2 O 4 ), manganese ferrite (MnFe 2 O 4 ), nickel ferrite (NiFe 2 O 4 ), magnesium ferrite (MgFe 2 O 4 ), burr composite ferrite; ferrite and polymer composite For example, JP-A-59-111929, 63-065085
And ferrite plating resin particles described in JP-A-62-075494; magnetite polymer composites; etc .; magnetite (Fe 3 O 4 ); γ-iron oxide (Fe 2 O 3 ).
これらは磁化量が、0.3〜90emu/gの範囲内にあり、本
発明に好ましく用いられる磁化機能を有する材料であ
る。本発明者らは磁性材料の内、磁化量が0.3emu/g未満
のものでは本発明方法でも被塗物エッジに充分には付着
せず、防錆効果が認められないし、90emu/gより大であ
るものは付着しすぎて塗膜異常をきたし、共に発明方法
を達成し難いこと、磁化量0.3〜90emu/gのもの、特に10
〜70emu/gのものが好ましく使用可能であることを見出
した。These are materials having a magnetization function having a magnetization amount in the range of 0.3 to 90 emu / g and preferably used in the present invention. The present inventors have found that if the magnetic material has a magnetization amount of less than 0.3 emu / g, it does not adhere sufficiently to the edge of the object to be coated even with the method of the present invention, and no rust-preventive effect is observed. Are excessively adhered, resulting in coating film abnormalities, making it difficult to achieve the invention method together, and having a magnetization of 0.3 to 90 emu / g, particularly 10
7070 emu / g has been found to be preferably usable.
本発明では発明目的を達成するために、電着塗料固形
分100重量部に対し、磁化機能を有する材料を0.01〜30
重量％含有する。平面部の仕上がりと端面の防錆を考え
た場合、0.1〜15％の範囲が特に有効である。In the present invention, in order to achieve the object of the present invention, with respect to 100 parts by weight of the solid content of the electrodeposition paint, 0.01 to 30
% By weight. When considering the finish of the flat part and the rust prevention of the end face, the range of 0.1 to 15% is particularly effective.
尚、電着塗料には平面部を含め、耐食性をあげるた
め、鉛化合物あるいはクロメート化合物等、防錆機能を
もつ化合物を配合することが特に好ましいが、本発明に
於いてかかる化合物の添加は必須ではない。他の通常の
添加剤も電着塗料に添加可能である。In order to increase the corrosion resistance of the electrodeposition paint, including the flat part, it is particularly preferable to add a compound having a rust-preventive function such as a lead compound or a chromate compound. However, the addition of such a compound is essential in the present invention. is not. Other conventional additives can also be added to the electrodeposition coating.
本発明では、このように調製された塗料を用い、電着
塗装が行われるが、この場合、被塗物の電着塗装が磁気
作用下に実施せられることを必須とする。即ち、通常は
電着塗料を入れた電着浴容器（対極）と同容器内に懸垂
保持した被塗物の間に直流電圧をかけ電流を流すのであ
るが、本発明では、永久磁石、電磁石などを被塗物に接
するとか、被塗物と対極の間に位置せしめるか、対極に
接するとかの方法により、磁場を作り、その磁気作用下
に電着塗装が実施せられる。このようにした場合、エッ
ジ部に強い磁力を生じ、磁化機能を有する材料が端面部
に多く析出するため、焼付後、端面部には、磁化機能を
有した材料を多く含んだ塗膜が形成され、高性能の防錆
性と平面部の高度な仕上がり外観の両立ができるという
成果が認められる。In the present invention, the electrodeposition coating is performed using the paint prepared in this manner. In this case, it is essential that the electrodeposition coating of the object to be coated is performed under magnetic action. That is, normally, a DC voltage is applied between an electrodeposition bath container (counter electrode) containing an electrodeposition paint and an object suspended and held in the container, and a current is applied. A magnetic field is created by a method such as contacting an object to be coated, being positioned between the object to be coated and a counter electrode, or being in contact with a counter electrode, and electrodeposition coating is performed under the magnetic action. In this case, a strong magnetic force is generated at the edge portion, and a large amount of the material having a magnetizing function is deposited on the end face portion. After baking, a coating film containing a large amount of the material having the magnetizing function is formed on the end face portion. As a result, it has been confirmed that both high performance rust prevention and a high degree of finished appearance of the flat part can be achieved at the same time.
磁気作用下であれば、いずれも上記の如き、作用効果
が認められるが、その際の磁石としては、被塗物端面部
との距離、磁化機能を有する材料の種類と量に応じ、適
当な強度のものを用いることが望ましい。If under magnetic action, any of the above-mentioned effects can be obtained, but as the magnet at that time, the distance from the end face of the object to be coated, the type and amount of the material having the magnetizing function, It is desirable to use a strong one.
以下、実施例により本発明を説明する。特にことわり
なき限り、部および％は重量による。Hereinafter, the present invention will be described with reference to examples. Unless indicated otherwise, parts and percentages are by weight.
参考例１ （Ａ）アニオン型樹脂Ａの調整 特公昭49−24566号公報、実施例１の記載と同様の方
法で、約15重量％、無水マレイン酸により、変性された
亜麻仁油から作ったマレイン化油樹脂652.8gを、111ml
の29％水酸化アンモニウム、145mlのｎ−ブトキシエタ
ノールおよび脱イオン水36.6mlと配合し、固形分70％、
pH7.8のアニオン樹脂を調整した。REFERENCE EXAMPLE 1 (A) Preparation of Anionic Resin A In the same manner as described in JP-B-49-24566, Example 1, a maleic acid was prepared from linseed oil modified with maleic anhydride at about 15% by weight. 652.8 g of petroleum oil resin, 111 ml
Of 29% ammonium hydroxide, 145 ml of n-butoxyethanol and 36.6 ml of deionized water, 70% solids,
A pH 7.8 anionic resin was prepared.
（Ｂ）カチオン型樹脂Ｂの調整 ビスフェノールＡのジグリシジルエーテル（エポキシ
当量910）1000重量部にエチレングリコールモノエチル
エーテル463重量部とジエチルアミン80.3重量部を配合
し、アミンエポキシ付加物（成分α）を調整した。一
方、コロネールＬ（日本ポリウレタン（株）製ポリイソ
シアネート;NCO 13％の不揮発分75重量％）875重量部に
ジブチル錫ラウレート0.05重量部と２−エチルヘキサノ
ール390重量部を加えた反応生成物エチレングリコール
モノエチルエーテル130重量部で希釈（成分β）、成分
α1000重量部と成分β400重量部から成る混合物を氷酢
酸30重量部で中和し、脱イオン水570重量部で希釈し
て、固形分50％に調整した。(B) Preparation of Cationic Resin B 1000 parts by weight of diglycidyl ether of bisphenol A (epoxy equivalent: 910) were mixed with 463 parts by weight of ethylene glycol monoethyl ether and 80.3 parts by weight of diethylamine, and an amine epoxy adduct (component α) was added. It was adjusted. On the other hand, ethylene glycol, a reaction product obtained by adding 0.05 parts by weight of dibutyltin laurate and 390 parts by weight of 2-ethylhexanol to 875 parts by weight of Colonel L (polyisocyanate manufactured by Nippon Polyurethane Co., Ltd .; 75% by weight of non-volatile content of 13% NCO) Dilute with 130 parts by weight of monoethyl ether (component β), neutralize a mixture of 1000 parts by weight of component α and 400 parts by weight of component β with 30 parts by weight of glacial acetic acid, dilute with 570 parts by weight of deionized water, and obtain a solid content of 50%. %.
（Ｃ）カチオン型樹脂Ｃの調整 樹脂B 150重量部に氷酢酸0.8重量部で中和し固形分50
％に調整した。(C) Preparation of cationic resin C 150 parts by weight of resin B was neutralized with 0.8 parts by weight of glacial acetic acid, and the solid content was 50%.
%.
参考例２ 顔料ペーストＩの調整 上記、混合物に樹脂A 203重量部および脱イオン水370
重量部を混合して撹拌した後、ガラスビーズを加えて、
高速ディスパーで分散して固形分53％の顔料ペーストを
調整した。Reference Example 2 Preparation of Pigment Paste I Above, add 203 parts by weight of resin A and 370 deionized water to the mixture.
After mixing and stirring parts by weight, add glass beads,
A pigment paste having a solid content of 53% was prepared by dispersion with a high-speed disper.
参考例３ 顔料ペーストIIの調整 上記、混合物に樹脂C 201.8部および脱イオン水352.5
部を混合して撹拌した後、ガラスビーズを加えて高速デ
ィスパーで分散して固形分53％の顔料ペーストを調整し
た。Reference Example 3 Preparation of Pigment Paste II Above, add 201.8 parts of resin C and 352.5 parts of deionized water to the mixture.
After mixing and stirring the parts, glass beads were added and dispersed with a high-speed disper to prepare a pigment paste having a solid content of 53%.
参考例４（フェライトメッキ樹脂粒子作成方法） （核体樹脂粒子合成） 撹拌機、温度計、モノマー滴下ロート、還流冷却器、
加熱装置、窒素ガス導入管を有する重合反応容器にイオ
ン交換水150部を仕込み、80℃でスチレンとアクリル酸
２−エチルヘキシルの90:10の混合モノマー（Ａ）１部
と10％の過硫酸アンモニウム水溶液10部を加え、その
後、上記混合モノマー（Ａ）99部を３時間で滴下して種
ラテックスを得た。粒子を電子顕微鏡観察したところ、
ほぼ単分散で、粒径は0.6μであった。Reference Example 4 (Method of preparing ferrite-plated resin particles) (Synthesis of core resin particles) Stirrer, thermometer, monomer dropping funnel, reflux condenser,
150 parts of ion-exchanged water is charged into a polymerization reactor having a heating device and a nitrogen gas inlet tube, and 1 part of a 90:10 mixed monomer (A) of styrene and 2-ethylhexyl acrylate and a 10% aqueous ammonium persulfate solution at 80 ° C. 10 parts were added, and then 99 parts of the mixed monomer (A) was added dropwise over 3 hours to obtain a seed latex. When the particles were observed with an electron microscope,
It was nearly monodisperse and had a particle size of 0.6μ.
（フェライトメッキ層生成） メッキ層生成操作に先立ち、塩化第１鉄、酢酸アンモ
ニウムの50％（重量比）イオン交換水溶液および亜硫酸
ナトリウムの10％（重量比）イオン交換水溶液を調製し
た。(Ferrite plating layer formation) Prior to the plating layer formation operation, a 50% (weight ratio) ion exchange aqueous solution of ferrous chloride and ammonium acetate and a 10% (weight ratio) ion exchange aqueous solution of sodium sulfite were prepared.
撹拌機、温度計、酸化剤液、滴下ロート、加熱装置、
窒素ガス導入管を有する磁性生成装置に前記エマルジョ
ン（固形分30％）100部を仕込み、N2ガスを導入して該
エマルジョン中の酸素を脱気させた。Stirrer, thermometer, oxidant liquid, dropping funnel, heating device,
Nitrogen wherein the magnetic generating device having a gas inlet tube emulsion (30% solids) and 100 parts were introduced N 2 gas was degassed oxygen in said emulsion.
次いで、予め用意した塩化第１鉄溶液240部（固形分1
20部）、酢酸アンモニウム400部（同200部）を装置内に
投入し、充分に撹拌混合しながら、70℃に加温した。そ
の後、撹拌を続けながらアンモニア水にてpHを7.2に調
整した。Next, 240 parts of a previously prepared ferrous chloride solution (solid content 1
20 parts) and 400 parts (200 parts) of ammonium acetate were charged into the apparatus, and heated to 70 ° C. with sufficient stirring and mixing. Thereafter, the pH was adjusted to 7.2 with aqueous ammonia while stirring was continued.
この溶液に亜硝酸ナトリウム溶液を約１時間かけて27
0部（固形分27部）を滴下した。滴下・反応中窒素ガス
の導入、撹拌を続けながら液温70℃、pH7.0〜7.2の範囲
に保ち、該粒子表面にマグネタイトを形成した。約20分
後、溶液を冷却して、濾過、イオン交換水による洗浄を
繰り返した後、粒子を取り出し、乾燥後磁性体メッキ粒
子（Ｉ）を得た。得られた磁性体メッキ粒子（Ｉ）をＸ
線回析および電子顕微鏡で観察したところ、表面に均一
なマグネタイト結晶層が生成していることが認められ
た。得られたメッキ粒子を比重2.15、電気抵抗値２×16
Ω・cm、飽和磁化50emu/gであった。The sodium nitrite solution was added to this solution for about 1 hour.
0 parts (solid content 27 parts) was added dropwise. The liquid temperature was kept at 70 ° C. and the pH was in the range of 7.0 to 7.2 while introducing and stirring nitrogen gas during the dropwise addition and the reaction to form magnetite on the surface of the particles. After about 20 minutes, the solution was cooled, and filtration and washing with ion-exchanged water were repeated. The particles were taken out and dried to obtain magnetic substance plated particles (I). The obtained magnetic plated particles (I) are
Observation with a line diffraction and an electron microscope showed that a uniform magnetite crystal layer was formed on the surface. The plated particles obtained were subjected to a specific gravity of 2.15 and an electric resistance of 2 × 16.
Ω · cm and saturation magnetization was 50 emu / g.
参考例５ 顔料ペーストIIIの調整 上記混合物に樹脂A 203部および、脱イオン水388.5部
を混合撹拌させたあと、ガラスビーズを加えた高速ディ
スパーで分散した。次に、参考例４で得られたフェライ
トメッキ樹脂粒子7.3部を加え、混合して固形分53％の
顔料ペーストを調整した。Reference Example 5 Preparation of Pigment Paste III After 203 parts of resin A and 388.5 parts of deionized water were mixed and stirred with the above mixture, the mixture was dispersed with a high-speed disper to which glass beads were added. Next, 7.3 parts of the ferrite-plated resin particles obtained in Reference Example 4 were added and mixed to prepare a pigment paste having a solid content of 53%.
参考例６ 顔料ペーストIVの調整 の混合物に樹脂C 201.8部、脱イオン水352.5部を加え撹
拌した後、ガラスビーズを加え、高速ディスパーで分散
処理した。次に参考例４で得られたフェライトメッキ樹
脂粒子8.2部を加え、混合して固形分53％の顔料ペース
トを調整した。Reference Example 6 Preparation of Pigment Paste IV 201.8 parts of Resin C and 352.5 parts of deionized water were added to the mixture, and the mixture was stirred. Glass beads were added, and the mixture was dispersed with a high-speed disper. Next, 8.2 parts of the ferrite plating resin particles obtained in Reference Example 4 were added and mixed to prepare a pigment paste having a solid content of 53%.
参考例７ 参考例６と同様方法で、但し、下記配合で固形分53％
の顔料ペースト（Ｖ）を調整した。Reference Example 7 In the same manner as in Reference Example 6, except that the solid content is 53% with the following composition.
Was prepared.
参考例８ 顔料ペーストVIの調整 上記混合物に樹脂C 201.8部および脱イオン水352.5部
を混合して撹拌した後、ガラスビーズを加えて高速ディ
スパーで分散して固形分53％の顔料ペーストを調整し
た。 Reference Example 8 Preparation of Pigment Paste VI After mixing 201.8 parts of Resin C and 352.5 parts of deionized water with the above mixture and stirring, glass beads were added and dispersed by a high-speed disper to prepare a pigment paste having a solid content of 53%.
参考例９ 顔料ペーストVIIIの調整 上記混合物の顔料ペーストを参考例７と同方法で調整
した。Reference Example 9 Preparation of Pigment Paste VIII A pigment paste of the above mixture was prepared in the same manner as in Reference Example 7.
実施例１ 参考例１のＡで得られたアニオン型樹脂A351.4部と脱
イオン水264部を混合し、次に参考例４で得た顔料ペー
スト（III）101部を加え、撹拌後脱イオン水1799.4部を
加え、固形分12％、PH8.0のアニオン電着塗料を得た。Example 1 A mixture of 351.4 parts of the anionic resin A obtained in A of Reference Example 1 and 264 parts of deionized water was added, and 101 parts of the pigment paste (III) obtained in Reference Example 4 was added. 1799.4 parts of ionic water was added to obtain an anionic electrodeposition paint having a solid content of 12% and a pH of 8.0.
ステンレス電着容器に上記電着塗料を入れ、化成処理
（グラノヂンSD2500化成処理液、日本ペイント（株）製
の施された市販のオルファカッター替刃Ｂ−10を浸漬
し、同替刃を直流電源の陰極にまた、前記容器の壁を陽
極に接続した。なお、オルファカッター替刃と容器壁の
中間に永久磁石（住友特殊金属株式会社50×50×10mm級
100ガウス）を位置せしめ、印加電圧150Vで３分間通電
し、塗膜を析出させた後、水洗し、170℃にて30分間焼
付け、約20μ（平坦部測定）の膜厚塗膜を形成せしめ
た。The above electrodeposition paint is put into a stainless steel electrodeposition container, and a chemical conversion treatment (Granon SD2500 chemical conversion treatment solution, a commercially available Olfa cutter replacement blade B-10 made by Nippon Paint Co., Ltd. is immersed, and the replacement blade is supplied with DC power. In addition, a permanent magnet (50 × 50 × 10 mm class) was connected between the Olfa cutter blade and the container wall.
(100 gauss), energized for 3 minutes at an applied voltage of 150 V to deposit a coating, washed with water and baked at 170 ° C for 30 minutes to form a film with a thickness of about 20μ (flat area measurement). Was.
この塗膜Ｈを塩水噴霧試験機（JIS Ｚ−2371）でテ
ストし、端面部での発錆迄の時間を調べた。本実施例の
試験片では500時間以上でも端面部の発錆を認められな
かった。This coating film H was tested with a salt spray tester (JIS Z-2371), and the time until rusting at the end face was examined. In the test piece of this example, no rust was observed on the end face even after 500 hours or more.
永久磁石をオルファカッター替刃に密着させた場合で
も、また容器壁に外部より密着させて位置せしめた場合
も同様の結果が得られた。Similar results were obtained when the permanent magnet was brought into close contact with the Olfa cutter spare blade and when the permanent magnet was brought into close contact with the container wall from the outside.
実施例２ 脱イオン水1516.6部へ、カチオン型樹脂B 705.6部を
混合し、撹拌後顔料ペーストIVを277.8部添加して固形
分20％に調整する。Example 2 To 1516.6 parts of deionized water, 705.6 parts of the cationic resin B are mixed, and after stirring, 277.8 parts of Pigment Paste IV is added to adjust the solid content to 20%.
その後、実施例１と同様の方法で試料を作成し塩水噴
霧試験を実施した。試験結果を第１表に示す。Thereafter, a sample was prepared in the same manner as in Example 1, and a salt spray test was performed. The test results are shown in Table 1.
実施例３ 塗料調整、試料作成および塩水噴霧試験は実施例２に
準じて実施した。試験結果を第１表に示す。Example 3 Paint preparation, sample preparation and salt spray test were carried out according to Example 2. The test results are shown in Table 1.
実施例４ 塗料調整、試料作成および塩水噴霧試験は実施例２に
準じて実施した。試験結果を第１表に示す。Example 4 Paint preparation, sample preparation and salt spray test were carried out according to Example 2. The test results are shown in Table 1.
実施例５ 塗料調整、試料作成および塩水噴霧試験は実施例２に
準じて実施した。試験結果を第１表に示す。Example 5 Paint preparation, sample preparation and salt spray test were carried out according to Example 2. The test results are shown in Table 1.
比較例１ 塗料調整、試料作成および塩水噴霧試験は実施例１に
準じて実施した。試験結果を第１表に示す。Comparative Example 1 The paint preparation, sample preparation and salt spray test were carried out according to Example 1. The test results are shown in Table 1.
比較例２ 塗料調整、試料作成および塩水噴霧試験は実施例２に
準じて実施した。試験結果を第１表に示す。Comparative Example 2 Paint preparation, sample preparation and salt spray test were carried out according to Example 2. The test results are shown in Table 1.
Claims (3)
料を、塗料固形分比で0.01〜30重量％含む電着塗料を、
被塗物に対し磁気作用下に電着塗装することを特徴とす
る電着塗装方法。An electrodeposition coating material containing a material having a magnetization function of a magnetization amount of 0.3 to 90 emu / g in a coating solid content ratio of 0.01 to 30% by weight,
An electrodeposition coating method, wherein an object to be coated is electrodeposited under magnetic action.
u/gである請求項第１項記載の方法。2. The material having a magnetizing function has a magnetization of 10 to 70 em.
The method of claim 1 wherein the ratio is u / g.
脂粒子を、塗料固形分比で0.01〜30重量％含む電着塗
料。3. An electrodeposition paint containing ferrite plating resin particles having a magnetization of 0.3 to 90 emu / g in a coating solid content ratio of 0.01 to 30% by weight.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20239088A JP2645495B2 (en) | 1988-08-12 | 1988-08-12 | Electrodeposition method and electrodeposition paint |
| DE19893926635 DE3926635A1 (en) | 1988-08-12 | 1989-08-11 | Electrocoating with lacquer contg. magnetic particles - using permanent magnet inside coating bath to improve corrosion protection of edges of substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20239088A JP2645495B2 (en) | 1988-08-12 | 1988-08-12 | Electrodeposition method and electrodeposition paint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0250998A JPH0250998A (en) | 1990-02-20 |
| JP2645495B2 true JP2645495B2 (en) | 1997-08-25 |
Family
ID=16456701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20239088A Expired - Fee Related JP2645495B2 (en) | 1988-08-12 | 1988-08-12 | Electrodeposition method and electrodeposition paint |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2645495B2 (en) |
| DE (1) | DE3926635A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007314763A (en) * | 2006-04-26 | 2007-12-06 | Chugoku Marine Paints Ltd | Edge cover coating and method for forming thick film coating to steel edge using the same |
| JP2007313403A (en) * | 2006-05-24 | 2007-12-06 | Nippon Paint Co Ltd | Method for forming coating film |
| JP4755607B2 (en) * | 2007-01-16 | 2011-08-24 | 日立アプライアンス株式会社 | Outdoor unit for air conditioner and method for assembling outdoor unit |
| DE102008051600A1 (en) | 2008-10-14 | 2009-06-10 | Daimler Ag | Process to prepare plastic workpiece with embedded magnetic for coating by electromagnetic process |
-
1988
- 1988-08-12 JP JP20239088A patent/JP2645495B2/en not_active Expired - Fee Related
-
1989
- 1989-08-11 DE DE19893926635 patent/DE3926635A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0250998A (en) | 1990-02-20 |
| DE3926635A1 (en) | 1990-03-15 |
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