JPH0344821B2 - - Google Patents
Info
- Publication number
- JPH0344821B2 JPH0344821B2 JP60002977A JP297785A JPH0344821B2 JP H0344821 B2 JPH0344821 B2 JP H0344821B2 JP 60002977 A JP60002977 A JP 60002977A JP 297785 A JP297785 A JP 297785A JP H0344821 B2 JPH0344821 B2 JP H0344821B2
- Authority
- JP
- Japan
- Prior art keywords
- paint
- coating
- pigment
- barium sulfate
- coat
- 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
- 239000011248 coating agent Substances 0.000 claims description 43
- 238000000576 coating method Methods 0.000 claims description 43
- 239000003973 paint Substances 0.000 claims description 31
- 239000000049 pigment Substances 0.000 claims description 23
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 7
- 238000004070 electrodeposition Methods 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 235000010215 titanium dioxide Nutrition 0.000 claims description 4
- 238000004040 coloring Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims 1
- 229920000877 Melamine resin Polymers 0.000 description 7
- 239000004640 Melamine resin Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000454 talc Substances 0.000 description 4
- 229910052623 talc Inorganic materials 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920001225 polyester resin Polymers 0.000 description 3
- 239000004645 polyester resin Substances 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000013022 formulation composition Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
〔産業上の利用分野〕
本発明は、自動車等に塗装して優れた塗膜外観
を与える積層塗膜に関する。
〔従来の技術〕
自動車等の積層塗膜は、被塗物素材である鉄板
面に電着塗料を下塗りして防食性能を確保し、つ
いで防食性能の補強ならびに上塗り塗膜の仕上が
りを確保する中塗りを施し、更に上塗塗装を積層
して形成されている。
このような塗装系からなる自動車の塗装外観の
向上は各自動車メーカーの主要な課題となつてい
るが、塗装外観の良否は中塗塗料の顔料組成に影
響されるところが少なくない。例えば、従来使用
されている顔料類のうち、炭酸カルシウムは塗装
作業性の面では優れているものの、水可溶分が多
くて耐湿性、耐水性が悪く、また光沢が出にくい
欠点がある。一方、耐チツピング性を付与するた
めにタルクやマイカ等の燐片状顔料が提案されて
いる(特公昭52−43657号公報、同昭53−45813号
公報)。ところが、これらタルクやマイカあるい
はアルミニウムシリケートなどの粒径の大きな体
質顔料はピツチングの防止、素材のダル目等の平
滑化の効果があり、また耐水性にも問題はないけ
れども、多量に使用した場合に上塗塗料の吸込み
が多くなつて光沢の優れた塗膜が得られ難い。例
えばタルク等の不定形な顔料は、中塗り表面の一
部が突出し、この部分が上塗塗料樹脂分を吸い込
んで光沢を低下させる現象を生じる。
〔発明が解決しようとする問題点〕
上記のような背景から、従来の顔料組成におい
て平滑性と吸込み防止の両性能を満足する積層塗
膜を得ることは困難であつた。
本発明は、従来技術で解決することができなか
つた中塗塗膜による被塗物素材の欠陥を改良し、
また上塗塗料の吸込みと流れ現象を防止すること
によつて塗膜の平滑性と光沢に優れた積層塗膜を
提供することを目的としている。
〔問題点を解決するための手段〕
上記の目的を達成するための本発明による積層
塗膜は、素材面に電着塗料による下塗り塗装、塗
料の顔料分中に硫酸バリウムを40〜50重量%及び
着色顔料を含む第一次中塗塗料と塗料の顔料分中
に硫酸バリウムを20〜40重量%及び着色顔料を含
む第二次中塗り塗料を塗り重ねた中塗り塗装、お
よび上塗り塗装を施してなることを構成上の特徴
とする。
本発明の下塗り塗装には、カチオン型またはア
ニオン型の電着塗料、また上塗り塗装にはアルキ
ド/メラミン樹脂系またはポリエステル/メラミ
ン樹脂系塗料によるソリツド型あるいはアクリ
ル/メラミン樹脂によるメタリツク型など常用の
塗料が用いられる。
中塗塗料のビヒクルとしては、一般に自動車塗
装に供用されるポリエステル樹脂、メラミン樹
脂、エポキシ樹脂等が適用される。
本発明は中塗り塗装を施す中塗塗料として、顔
料分中に硫酸バリウム40〜50重量%及び着色顔料
を含む第一次中塗塗料と、顔料分中に硫酸バリウ
ム20〜40重量%及び着色顔料を含む第二次中塗塗
料とを用い、これを塗り重ねるところに構成の主
要部分が存する。
前記顔料成分を特徴付ける硫酸バリウムをチタ
ン白、タルク等と性状比較すると、表−1のよう
になる。
[Industrial Application Field] The present invention relates to a laminated coating film that is applied to automobiles and the like to provide an excellent coating appearance. [Conventional technology] Laminated coating films for automobiles, etc. are made by applying an electrocoating paint as an undercoat to the surface of the steel plate, which is the material to be coated, to ensure anti-corrosion performance, and then reinforcing the anti-corrosion performance and ensuring the finish of the top coat film. It is formed by applying a coating and then layering a top coat. Improving the painted appearance of automobiles made of such paint systems is a major challenge for each automobile manufacturer, but the quality of the painted appearance is often influenced by the pigment composition of the intermediate coating. For example, among conventionally used pigments, calcium carbonate is excellent in terms of painting workability, but has the disadvantage that it has a large amount of water soluble content, has poor moisture resistance and water resistance, and is difficult to produce gloss. On the other hand, scaly pigments such as talc and mica have been proposed to impart chipping resistance (Japanese Patent Publication Nos. 52-43657 and 1983-45813). However, extender pigments with large particle sizes such as talc, mica, or aluminum silicate have the effect of preventing pitting and smoothing out the dullness of the material, and also have no problem with water resistance, but if used in large quantities The suction of the top coat increases, making it difficult to obtain a coating film with excellent gloss. For example, when using an amorphous pigment such as talc, a portion of the intermediate coating surface protrudes, and this portion absorbs the resin component of the top coating, resulting in a phenomenon in which gloss is reduced. [Problems to be Solved by the Invention] Due to the above background, it has been difficult to obtain a laminated coating film that satisfies both smoothness and suction prevention performance using conventional pigment compositions. The present invention improves the defects of the material to be coated due to the intermediate coating film, which could not be solved by conventional techniques,
It also aims to provide a laminated coating film with excellent coating film smoothness and gloss by preventing suction and flow phenomena of the top coat paint. [Means for Solving the Problems] The laminated coating film according to the present invention to achieve the above object consists of applying an undercoat to the surface of the material using an electrodeposition paint and containing 40 to 50% by weight of barium sulfate in the pigment content of the paint. A first intermediate coating containing a colored pigment, a second intermediate coating containing 20 to 40% by weight of barium sulfate in the pigment content of the paint, and a second intermediate coating containing a colored pigment, and a top coat are applied. The compositional feature is that The undercoat of the present invention can be a cationic or anionic electrodeposition paint, and the topcoat can be a solid type using an alkyd/melamine resin or polyester/melamine resin paint, or a commonly used paint such as a metallic type using an acrylic/melamine resin. is used. As the vehicle for the intermediate paint, polyester resins, melamine resins, epoxy resins, etc., which are generally used for automobile painting, are used. The present invention provides a primary intermediate coating that contains 40 to 50% by weight of barium sulfate and a colored pigment in the pigment component, and a primary intermediate coating that contains 20 to 40% by weight of barium sulfate and a colored pigment in the pigment component. The main part of the structure lies in the use of a second intermediate coating, which is coated over and over again. Table 1 shows a comparison of the properties of barium sulfate, which characterizes the pigment component, with titanium white, talc, etc.
自動車のボデイーは、基本的に水平部と垂直部
で形成されている。特に水平部は、素材である鉄
板のもつダル目(うねりと粗さ)が目立ち易いた
め、電着塗料(下塗り)によつて被覆できないダ
ル目をどこまで平滑化できるか、また中塗り塗装
で上塗りの吸込みをどの程度止められるかが優れ
た塗装外観を得るための課題となる。一方、垂直
部の仕上がりは上塗り塗装の寄与率が大きいが、
中塗りとしても平滑であることが好ましく、また
中塗が流れ難いことも良好な仕上がりを得るため
の重要な要件となる。
本発明によれば、中塗塗料として先ず顔料分中
に硫酸バリウム40〜50重量%と着色顔料を含む第
一次中塗塗料を塗布することによりそのキズ隠蔽
機能を介して被塗物および下塗り塗膜のダル目を
平滑化し、ついで顔料分中に硫酸バリウム20〜40
重量%と好ましくはチタン白を主成分とする着色
顔料を含む第二次中塗塗料を塗り重ねることによ
つて上塗りの吸込みを効果的に防止する両面の作
用が発揮される。
これらの作用が相俟つて、積層塗膜とした場合
に光沢性のある優れた塗膜外観が付与される。
〔実施例〕
中塗塗料として、表−2および表−3の配合組
成(重量比)による5種類の塗料を作成した。
The body of an automobile is basically formed of a horizontal part and a vertical part. Particularly in the horizontal areas, the roughness (undulations and roughness) of the iron plate material is easily noticeable, so it is difficult to smooth out the roughness that cannot be covered with an electrodeposition paint (undercoat), and to apply a topcoat with an intermediate coat. The issue in achieving an excellent paint appearance is how much of the suction can be stopped. On the other hand, the finish of the vertical part has a large contribution rate from the top coat;
It is preferable that the intermediate coating be smooth, and it is also an important requirement for the intermediate coating to be difficult to run, in order to obtain a good finish. According to the present invention, by first applying a primary intermediate coating containing 40 to 50% by weight of barium sulfate and a coloring pigment as an intermediate coating, the scratch hiding function of the primary intermediate coating can be applied to the object to be coated and the undercoat. 20~40% of barium sulfate is added to the pigment.
By applying a second intermediate coating containing a colored pigment, preferably titanium white as a main component, a two-sided action to effectively prevent suction of the topcoat is exerted. These effects work together to provide a glossy and excellent coating appearance when formed into a laminated coating. [Example] Five types of paints were prepared as intermediate paints according to the formulation compositions (weight ratios) shown in Tables 2 and 3.
【表】【table】
【表】【table】
【表】
実施例1〜4、比較例1〜4
10×15cmのリン酸亜鉛処理を施したSPC−1鋼
板を基材とし、この面にエアスプレーにより電着
塗料〔日本ペイント(株)製、パワートツプU−30〕
を20〜25μmの乾燥膜厚(以下同じ)に塗装し、
180℃の温度で20分間焼付けて下塗り塗装をおこ
なつた。
この下塗り塗膜の上に、表−2および表−3に
示した組成の中塗塗料を組合わせ、エアースプレ
ーを用いて第一次中塗塗料および第二次中塗塗料
を各30〜40μmの膜厚で塗装し各140℃で30分間
焼付けする2コート2ベーク条件により重ね塗り
して中塗り塗装をおこなつた。
上塗り塗装は、上塗塗料としてベースコートに
アクリル/メラミン樹脂メタリツク塗料〔日本ペ
イント(株)製、スーパーラツクM−12レツドメタリ
ツク〕とクリヤーコートにアクリル/メラミン樹
脂塗料〔日本ペイント(株)製、スーパーラツクO−
70クリヤー〕との2種類の塗料(以下「塗料M」
という。)を用いて膜厚20/30μm(2C/1b適用)
に塗装する方法と、ポリエステル/メラミン樹脂
のソリツド型上塗塗料〔日本ペイント(株)製、オル
ガS−20ホワイト〕(以下「塗料S」という。)を
用いて膜厚40μmに塗装する方法でおこなつた。
なお、上塗塗膜は140℃で30分間焼き付けを行つ
た。
このようにして得られた試験片の積層塗膜につ
き、密着性、20°グロス、NPIG値、表面粗度、耐
候耐湿性などの塗膜性能を測定し、その評価結果
を対比させて表−4(実施例)および表−5(比較
例)に示した。
塗膜性能のうち、密着性は積層塗膜を−20℃で
グラベロメーターにより角度45°、7号砕石100
g、エアー圧力2Kg/cm2における中塗り/上塗り
間の密着度を測定する方法でおこなつた。20°グ
ロスは上塗りが中塗塗膜に吸込まれる程度の評価
で、JIS K−5400 6.7に従つて測定した。NPIG
値は平滑性や鮮映性が目視外観と最も近似する度
合いを示すもので、写像鮮映性測定機〔日本ペイ
ント(株)製〕を用いて測定した。表面粗度は中塗り
塗膜が下地の粗面を埋めて仕上がり外観に寄与す
る下地隠蔽性の程度を評価する指標で、表面粗度
計〔Surfcom Model SuRF07 B〕で測定した。
また、耐候耐湿性の測定は、サンシヤイン型ウエ
ザオメータ600時間と耐湿性(50℃、98% R.H)
240時間を1サイクルとして5回繰り返したとき
の状態を判定し、異常なし◎、不良×として示し
た。[Table] Examples 1 to 4, Comparative Examples 1 to 4 A 10 x 15 cm zinc phosphate-treated SPC-1 steel plate was used as the base material, and electrodeposition paint [manufactured by Nippon Paint Co., Ltd.] was applied to this surface by air spraying. , power top U-30]
Paint to a dry film thickness of 20 to 25 μm (the same applies below),
The undercoat was applied by baking at 180℃ for 20 minutes. On top of this base coat film, combine the intermediate coat paints with the compositions shown in Tables 2 and 3, and use air spray to apply the first intermediate coat paint and the second intermediate coat paint to a film thickness of 30 to 40 μm each. An intermediate coat was applied by applying two coats and two bakes, each coat being painted at 140°C for 30 minutes. The top coat is an acrylic/melamine resin metallic paint (made by Nippon Paint Co., Ltd., Super Lux M-12 Red Metallic) for the base coat and an acrylic/melamine resin paint (made by Nippon Paint Co., Ltd., Super) for the clear coat. Rack O-
70 Clear] and two types of paint (hereinafter referred to as "Paint M").
That's what it means. ) to achieve a film thickness of 20/30μm (applicable to 2C/1b)
There are two methods: one is to paint the paint to a film thickness of 40 μm using a polyester/melamine resin solid topcoat [Nippon Paint Co., Ltd., Orga S-20 White] (hereinafter referred to as "Paint S"). Konatsuta.
The top coat was baked at 140°C for 30 minutes. For the laminated coating film of the test piece obtained in this way, coating film performance such as adhesion, 20° gloss, NPIG value, surface roughness, weather resistance and moisture resistance was measured, and the evaluation results were compared and shown in the table below. 4 (Example) and Table 5 (Comparative Example). Among the coating film performance, adhesion was determined by measuring the laminated coating film at -20℃ using a gravelometer at an angle of 45° and No. 7 crushed stone 100.
The adhesion between the intermediate coat and the top coat was measured at an air pressure of 2 kg/cm 2 . 20° gloss is an evaluation of the degree to which the top coat is absorbed into the intermediate coat film, and was measured in accordance with JIS K-5400 6.7. NPIG
The value indicates the degree to which the smoothness and image clarity most approximate the visual appearance, and was measured using an image clarity measuring device (manufactured by Nippon Paint Co., Ltd.). Surface roughness is an index for evaluating the degree of base-hiding ability of the intermediate coating that fills the rough surface of the base and contributes to the finished appearance, and was measured using a surface roughness meter [Surfcom Model SuRF07 B].
In addition, the weather and humidity resistance was measured using a Sunshine type weather meter for 600 hours and humidity resistance (50℃, 98% RH).
The condition was judged after repeating 5 times with 240 hours as one cycle, and it was indicated as ◎, no abnormality, and defective.
【表】【table】
【表】【table】
以上のとおり、本発明によれば被塗物および第
一層からくるダル目を独特の中塗り塗装に基づく
キズ隠蔽作用によつて平滑化し、かつ吸込み性を
防止して上塗り塗膜の外観を向上させるという従
来技術では達成することができなかつた高性能の
積層塗膜を提供することが可能となる。したがつ
て、自動車用として要求される塗膜性能を満足す
る有用性がある。
As described above, according to the present invention, the scratches coming from the object to be coated and the first layer are smoothed by the scratch hiding effect based on the unique intermediate coating, and the appearance of the top coat is improved by preventing suction. It becomes possible to provide a high-performance laminated coating film that could not be achieved using conventional techniques. Therefore, it is useful in satisfying the coating film performance required for automobiles.
Claims (1)
顔料分中に硫酸バリウムを40〜50重量%及び着色
顔料を含む第一次中塗塗料と塗料の顔料分中に硫
酸バリウムを20〜40重量%及び着色顔料を含む第
二次中塗塗料を塗り重ねた中塗り塗装、および上
塗り塗装を施してなることを特徴とする積層塗
膜。 2 第二次中塗塗料の着色顔料がチタン白を主成
分とし、チタン白と硫酸バリウムの配合比率が
2:1〜3:1(重量比)である特許請求の範囲
第1項記載の積層塗膜。[Scope of Claims] 1. Undercoating with electrodeposition paint on the surface of the material, 40 to 50% by weight of barium sulfate in the pigment content of the paint, a primary intermediate paint containing color pigments, and barium sulfate in the pigment content of the paint. A laminated coating film characterized in that it is formed by applying a second intermediate coating paint containing 20 to 40% by weight of a color pigment and an intermediate coating coating, and a top coating coating. 2. The multilayer coating according to claim 1, wherein the coloring pigment of the second intermediate coating is mainly composed of titanium white, and the blending ratio of titanium white and barium sulfate is 2:1 to 3:1 (weight ratio). film.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60002977A JPS61162567A (en) | 1985-01-10 | 1985-01-10 | Intercoating coating |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60002977A JPS61162567A (en) | 1985-01-10 | 1985-01-10 | Intercoating coating |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61162567A JPS61162567A (en) | 1986-07-23 |
JPH0344821B2 true JPH0344821B2 (en) | 1991-07-09 |
Family
ID=11544430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60002977A Granted JPS61162567A (en) | 1985-01-10 | 1985-01-10 | Intercoating coating |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61162567A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3834350B2 (en) * | 1996-03-14 | 2006-10-18 | 株式会社きもと | Light reflecting material |
US5695812A (en) * | 1996-07-08 | 1997-12-09 | Pritchett; Joseph E. | Method for abating bio-hazardous materials found in coatings |
JP2003293167A (en) * | 2002-04-08 | 2003-10-15 | Nisshin Steel Co Ltd | Primer-coated steel sheet for outer wall |
CN102719127A (en) * | 2012-07-05 | 2012-10-10 | 南海军 | Anti-neutron irradiation material |
-
1985
- 1985-01-10 JP JP60002977A patent/JPS61162567A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS61162567A (en) | 1986-07-23 |
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Legal Events
Date | Code | Title | Description |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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EXPY | Cancellation because of completion of term |