JPS606708B2 - Manufacturing method for stainless steel molded products with powder coating film - Google Patents
Manufacturing method for stainless steel molded products with powder coating filmInfo
- Publication number
- JPS606708B2 JPS606708B2 JP16794880A JP16794880A JPS606708B2 JP S606708 B2 JPS606708 B2 JP S606708B2 JP 16794880 A JP16794880 A JP 16794880A JP 16794880 A JP16794880 A JP 16794880A JP S606708 B2 JPS606708 B2 JP S606708B2
- Authority
- JP
- Japan
- Prior art keywords
- coating film
- stainless steel
- powder coating
- resin
- steel molded
- 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
Links
- 239000000843 powder Substances 0.000 title claims description 30
- 239000011248 coating agent Substances 0.000 title claims description 28
- 238000000576 coating method Methods 0.000 title claims description 28
- 229910001220 stainless steel Inorganic materials 0.000 title claims description 17
- 239000010935 stainless steel Substances 0.000 title claims description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 11
- 229920006122 polyamide resin Polymers 0.000 claims description 11
- 229920000647 polyepoxide Polymers 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 2
- 229920013716 polyethylene resin Polymers 0.000 claims description 2
- -1 polypropylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000002987 primer (paints) Substances 0.000 description 8
- 239000003973 paint Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 229920000768 polyamine Polymers 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 238000010422 painting Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 241000124033 Salix Species 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920000571 Nylon 11 Polymers 0.000 description 1
- 101150065537 SUS4 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007888 film coating Substances 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
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】
この発明は密着性の高い粉体塗装膜を有するステンレス
成形品の製造法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a stainless steel molded article having a highly adhesive powder coating film.
自動車用ピラーモールディング、ウィンドウモールディ
ング等のステンレス成形品に粉体塗装膜を形成すること
が行なわれている。一般に成形された鋼材の表面に粉体
塗装膜を形成する際、あらかじめ前処理後、霞着塗装ま
たはェポキシ樹脂プラィマー塗装を施すと、密着性の良
好な粉体塗装膜を形成することができる。しかしステン
レス成形品の場合、同様の処理を行っても密着性は改善
されない。これはステンレスが不活性であるため、粉体
塗装膜あるいはプラィマー塗膜との結合力が弱いからで
あると推定される。この発明は以上のような点に着目し
てなされたものでくステンレス成形品の表面に密着性の
高い粉体塗装膜を形成することのできる方法を提案する
ことを目的としている。BACKGROUND ART A powder coating film is formed on stainless steel molded products such as automobile pillar moldings and window moldings. Generally, when forming a powder coating film on the surface of a molded steel material, if a mist coating or an epoxy resin primer coating is applied after pretreatment, a powder coating film with good adhesion can be formed. However, in the case of stainless steel molded products, the adhesion is not improved even if the same treatment is performed. This is presumed to be because stainless steel is inert and has a weak bonding force with the powder coating film or primer coating film. The present invention has been made in view of the above points, and an object of the present invention is to propose a method capable of forming a highly adhesive powder coating film on the surface of a stainless steel molded product.
この発明はステンレス成形品に、ポリアミド樹脂を硬化
剤としてェポキシ樹脂塗膜を形成したのち、粉体塗装を
行うことを特徴とする粉体塗装膜を有するステンレス成
形品の製造法である。This invention is a method for manufacturing a stainless steel molded article having a powder coating film, which is characterized in that an epoxy resin coating film is formed on the stainless steel molded article using a polyamide resin as a curing agent, and then powder coating is applied.
この発明において使用するェポキシ樹脂としては次の【
１’式により表わされるものがある。ｔｌ｝式中ｎは正
数を表わし、その数は特に限定されないが、特に１〜４
が望ましい。このようなェポキシ樹脂は芳香族炭化水素
系溶剤をベースとし、これにケトン系、エーテル系、ア
ルコール系溶剤を組合せてプラィマー塗料とする。この
ようなェポキシ樹脂塗料は、通常ポリアミンを硬化剤と
して硬化させているが、こうして生＊＊成する塗膜は密
着性が悪く、強固な粉体塗装膜を形成することができな
い。The following epoxy resins are used in this invention:
There is one expressed by the formula 1'. tl} In the formula, n represents a positive number, and the number is not particularly limited, but in particular 1 to 4.
is desirable. Such epoxy resin is based on an aromatic hydrocarbon solvent, and is combined with a ketone, ether, or alcohol solvent to form a primer paint. Such epoxy resin paints are usually cured using polyamine as a curing agent, but the resulting paint film has poor adhesion and cannot form a strong powder coating film.
本発明において使用する硬化剤は従来のポリアミンとは
異なるポリアミド樹脂であって、脂肪族ポリァミンと二
塩基酸の縮合によって製造され、次の（２｝式により表
わされる。■式中Ｒ，ＲＩはそれぞれアルキレン基を表
わし、ｎは正数を表わし、その数は限定されない。The curing agent used in the present invention is a polyamide resin different from conventional polyamines, and is produced by the condensation of an aliphatic polyamine and a dibasic acid, and is represented by the following formula (2). ■In the formula, R and RI are Each represents an alkylene group, n represents a positive number, and the number is not limited.
この硬化剤は従来のものと同様な方法で上記｛１｝式の
ヱポキシ樹脂に配合し使用される。 ２両者の
配合比は特に限定されず、最適配合比の幅も広いが、重
量比で１：１付近が好ましい。両者は別々の液として調
製し、塗布にあたって混合する。混合、塗布により両者
間に架橋が起り、密着性の良い塗膜が形成され、粉体塗
装膜との密着性もよい。次に本発明の製造法の一例を図
面により、工程ごとに説明する。This curing agent is mixed with the above {1} type epoxy resin and used in the same manner as conventional ones. The blending ratio of the two is not particularly limited, and the optimal blending ratio is wide, but a weight ratio of around 1:1 is preferred. Both are prepared as separate liquids and mixed before application. By mixing and coating, crosslinking occurs between the two, forming a coating film with good adhesion, and also good adhesion to the powder coating film. Next, an example of the manufacturing method of the present invention will be explained step by step with reference to the drawings.
図面は実施例の方法を示す系統図であり、１はステンレ
ス成形品、２は塗装用ガン、３は粉体用ガン、４は完成
品であり、（１）〜（Ｖ）はそれぞれ工程を示す。第（
１）工程は前処理工程であって、成形品１の脱脂等の前
処理を行う。第（０）工程はプラィマー塗装工程で、前
処理を行った成形品１の表面に、塗装用ガン２により前
記ェポキシ樹脂およびポリアミド樹脂を混合したプラィ
マ−塗料を塗付する。第（ｍ）工程は乾燥工程であり、
塗装後の自然乾燥を行い、必要に応じて焼付を行う。第
（Ｎ）工程は粉体付着工程であり、成形品１の塗装面に
、粉体用ガン３によりポリアミド樹脂、ポリエチレン樹
脂、ポリプロピレン樹脂、エチレン酢酸ビニル共重合樹
脂等の粉体を静電的に付着させる。第（Ｖ）工程は溶融
工程であり、２２０００前後に加熱して樹脂粉体を熔融
し、粉体塗装膜を形成し、完成品４を得る。本発明では
ポリアミド樹脂を硬化剤としてェポキシ樹脂塗膜を形成
するので、ポリアミンを硬化剤とする場合に比べて反応
性が緩やかで架橋密度小さく、このため塗膜密着性が高
く、タワミ性、耐衝撃性に優れるプラィマ−塗膜が得ら
れる。The drawing is a system diagram showing the method of the example, 1 is a stainless steel molded product, 2 is a painting gun, 3 is a powder gun, 4 is a finished product, and (1) to (V) are the respective steps. show. No. (
The step 1) is a pretreatment step in which pretreatment such as degreasing of the molded product 1 is performed. The (0) step is a primer coating step, in which a primer paint containing a mixture of the epoxy resin and polyamide resin is applied to the surface of the pretreated molded article 1 using a painting gun 2. Step (m) is a drying step,
After painting, dry naturally and bake if necessary. The (N) step is a powder adhesion step, in which powder of polyamide resin, polyethylene resin, polypropylene resin, ethylene vinyl acetate copolymer resin, etc. is electrostatically applied to the painted surface of the molded product 1 using a powder gun 3. attach it to. Step (V) is a melting step, in which the resin powder is melted by heating to around 22,000 ℃ to form a powder coating film and obtain a finished product 4. In the present invention, an epoxy resin coating film is formed using polyamide resin as a curing agent, so the reactivity is gentler and the crosslinking density is lower than when polyamine is used as a curing agent. Therefore, the coating film has high adhesion, sagging properties, and resistance. A primer coating film with excellent impact resistance is obtained.
さらにこの塗腰は粉体樹脂との密着性も良く、特に粉体
樹脂としてポリアミド樹脂を使用する場合は相客性に近
い密着性が表われる。このため形成される粉体塗装膜は
密着性が高く、タワミ性、耐衝撃性にも優れたものとな
る。本発明は自動車用ピラーモールディング、ウィンド
ウモールデイングに限らず、他のステンレス成形品に粉
体塗装を施す場合に適用可能である。Furthermore, this coating has good adhesion to powder resin, and in particular, when polyamide resin is used as the powder resin, adhesion close to mutuality appears. Therefore, the powder coating film formed has high adhesion, and is also excellent in deflection and impact resistance. The present invention is applicable not only to automobile pillar moldings and window moldings, but also to applying powder coating to other stainless steel molded products.
次に本発明の実施例について説明する。実施例
１７０仇×６肌×０．６肌のステンレス成形品ＳＵＳ４
３０（実施例１）およびＳＵＳ４３４（実施例２）をア
ルカリ脱脂処理したのち、ポリアミド樹脂を硬化剤とす
るェポキシ樹脂プラィマー塗料ェポナ（オリジン電気株
式会社商標）を、硬化剤と塗料を重量比で１：１に混合
して塗布し、乾燥後、１００００で２０分間焼付を行い
、次いで１００〜１２０仏のポリアミド樹脂（ナイロン
１１）を静電的に吹付けて付着させ、２１が０で７分間
暁付を行い、完成品を得た。Next, examples of the present invention will be described. Example 170 x 6 skin x 0.6 skin stainless steel molded product SUS4
30 (Example 1) and SUS434 (Example 2) were subjected to alkaline degreasing treatment, and then epoxy resin primer paint Epona (trademark of Origin Electric Co., Ltd.) containing polyamide resin as a hardening agent was applied at a weight ratio of hardening agent and paint of 1. : 1 mixed and applied, dried and baked at 10,000 for 20 minutes, then electrostatically sprayed with a polyamide resin (nylon 11) of 100 to 120 degrees, and baked at 0 for 7 minutes. The finished product was obtained.
この完成品と、硬化剤としてポリアミンを使用するェポ
キシプラィマー塗料リルプリム（日本リルサン株式会社
商糠）を使用して同様に粉体塗装を行った完成品（比較
例１，２）とについて、クロスカットおよび碁盤目テス
トにより密着性を調べたところ、同機に良好な結果を得
たが、表１の項目については同表に結果を示す通り、実
施例１，２のものが比較例１，２よりも良好な結果を示
した。表中０は良好、×は不可、△は両者の中間の判定
を示し、耐緑性は湿度９８％（５０００）で２４斑時間
放置した試験で、外観は外観観察による判定、密着性は
碁盤目テストによる判定で、数字は分母が形成した碁盤
目（１柳×１側）の数、分子が粘着テープにより剥離さ
れなかった碁盤目の数を示す。Regarding this finished product and finished products (Comparative Examples 1 and 2) that were powder coated in the same way using the epoxy primer paint Rilpurim (Nippon Rilsan Co., Ltd.), which uses polyamine as a hardening agent. When the adhesion was investigated by cross-cut and grid tests, good results were obtained for the same machine, but as shown in the results for the items in Table 1, Examples 1 and 2 were better than Comparative Example 1. , 2 showed better results. In the table, 0 indicates good, × indicates not good, and △ indicates an intermediate judgment between the two. Green resistance was determined by leaving it for 24 hours at a humidity of 98% (5000), appearance was determined by external observation, and adhesion was determined by a Go board. As determined by the eye test, the numbers indicate the number of grids formed by the denominator (1 willow x 1 side) and the number of grids in which the molecule was not peeled off by the adhesive tape.
耐温水性は４０００の温水に７幼時間浸潰した試験で、
外観および密着性は耐湿性の場合と同様である。塩水頃
霧および塩水浸溝は、それぞれクロスカット（対角線に
切込を入れる）した成形品に２４加持間塩水を糟霧し、
または塩水（２５００）に浸潰した試験で、外観の数字
はクロスカット部分からフクレの生じた距離（柳）を示
し、密着性は粘着テープを貼り付けて剥した場合の剥離
部分のクロスカットからの距離（側）を示す。複合サイ
クルはクロス力ット入の成形品を、塩水頃霧７．５時間
、８０ｑ０１時間、一３０ｏ０１．５時間、湿度９８％
（５０℃）１４時間を５サイクル繰返した試験であり、
数字はクロスカットからのフクレの距離（肌）を示す。
また屋外曝露はクロス力ット入成形品を３ケ月間屋外に
曝露した試験であり、数字は複合サイクルの場合と同じ
である。表 １
以上の結果より、実施例１，２のものは比較例１，２の
ものに比べて、はるかに良好な密着性を示していること
がわかる。The hot water resistance was tested by immersing it in 4000℃ hot water for 7 hours.
The appearance and adhesion are the same as in the case of moisture resistance. Salt water fog and salt water immersion grooves are made by spraying salt water on cross-cut molded parts (cutting diagonally) for 24 hours.
Or in a test immersed in salt water (2500), the appearance number indicates the distance from the cross-cut part where the blistering occurred (willow), and the adhesion is measured from the cross-cut of the peeled part when adhesive tape is applied and peeled off. Indicates the distance (side). In the combined cycle, molded products with cross-force input are heated in salt water for 7.5 hours, 80℃ for 1 hour, 130℃ for 1.5 hours, and humidity 98%.
(50℃) 14 hours 5 cycles were repeated,
The numbers indicate the distance (skin) of the bulge from the crosscut.
In addition, outdoor exposure is a test in which a cross-strapped molded product is exposed outdoors for 3 months, and the numbers are the same as for the combined cycle. Table 1 From the above results, it can be seen that Examples 1 and 2 exhibited much better adhesion than Comparative Examples 1 and 2.
以上のとおり、この発明によれば、密着性の良好な粉体
塗装膜を有するステンレス成形品を製造することができ
る。As described above, according to the present invention, a stainless steel molded article having a powder coating film with good adhesion can be manufactured.
図面は実施例の方法を示す系統図であり、１はステンレ
ス成形品、２は塗装用ガン、３は粉体用ガン、４は完成
品であり、（１）〜（Ｖ）はそれぞれ工程を示す。The drawing is a system diagram showing the method of the example, 1 is a stainless steel molded product, 2 is a painting gun, 3 is a powder gun, 4 is a finished product, and (1) to (V) are the respective steps. show.
Claims (1)
てエポキシ樹脂塗膜を形成したのち、粉体塗装を行うこ
とを特徴とする粉体塗装膜を有するステンレス成形品の
製造法。 ２ エポキシ樹脂とポリアミド樹脂の配合比は約１：１
である特許請求の範囲第１項記載の粉体塗装膜を有する
ステンレス成形品の製造法。 ３ 粉体塗装はポリアミド樹脂、ポリエチレン樹脂、ポ
リプロピレン樹脂、エチレン酢酸ビニル共重合樹脂から
選ばれる１以上の粉体樹脂によるものである特許請求の
範囲第１項または第２項記載の粉体塗装膜を有するステ
ンレス成形品の製造法。[Scope of Claims] 1. A method for producing a stainless steel molded product having a powder coating film, which comprises forming an epoxy resin coating film on the stainless steel molded product using a polyamide resin as a curing agent, and then applying powder coating. 2 The blending ratio of epoxy resin and polyamide resin is approximately 1:1
A method for manufacturing a stainless steel molded article having a powder coating film according to claim 1. 3. The powder coating film according to claim 1 or 2, wherein the powder coating is made of one or more powder resins selected from polyamide resin, polyethylene resin, polypropylene resin, and ethylene-vinyl acetate copolymer resin. A method for manufacturing stainless steel molded products having
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16794880A JPS606708B2 (en) | 1980-12-01 | 1980-12-01 | Manufacturing method for stainless steel molded products with powder coating film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16794880A JPS606708B2 (en) | 1980-12-01 | 1980-12-01 | Manufacturing method for stainless steel molded products with powder coating film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5791777A JPS5791777A (en) | 1982-06-08 |
| JPS606708B2 true JPS606708B2 (en) | 1985-02-20 |
Family
ID=15859009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16794880A Expired JPS606708B2 (en) | 1980-12-01 | 1980-12-01 | Manufacturing method for stainless steel molded products with powder coating film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS606708B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2772899B1 (en) * | 1997-12-23 | 2000-03-03 | Valeo Thermique Moteur Sa | CLOSED FINED BEAM FOR HEAT EXCHANGER |
-
1980
- 1980-12-01 JP JP16794880A patent/JPS606708B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5791777A (en) | 1982-06-08 |
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