JP2010047803A - 電着塗装前処理用組成物および電着塗装方法 - Google Patents
電着塗装前処理用組成物および電着塗装方法 Download PDFInfo
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- JP2010047803A JP2010047803A JP2008213338A JP2008213338A JP2010047803A JP 2010047803 A JP2010047803 A JP 2010047803A JP 2008213338 A JP2008213338 A JP 2008213338A JP 2008213338 A JP2008213338 A JP 2008213338A JP 2010047803 A JP2010047803 A JP 2010047803A
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- electrodeposition coating
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Abstract
【解決手段】脱脂工程a1と、酸洗工程a2と、化成処理工程a3と、電着塗装工程a5と、塗膜硬化工程a6とを含む電着塗装方法において、化成処理工程a3と電着塗装工程a5との間に前処理工程a4を設け、少なくともシランカップリング剤を含む電着塗装前処理用組成物によって、被処理品の金属表面を電着塗装前処理する。
【選択図】図1
Description
(R1)3N−A−SiRm(OR)(3−m) …(2)
〔式中、R、Aおよびmは上記に同じ。3つのR1は同一または異なって水素原子またはアルキル基を示す。〕
で表されるアミノ基含有アルコキシシランが挙げられる。一般式(2)において、符号R1で示されるアルキル基は、一般式(1)において符号Rで示されるアルキル基と同様である。アミノ基含有アルコキシシランの具体例としては、たとえば、アミノメチルトリメトキシシラン、2−アミノエチルトリメトキシシラン、3−アミノプロピルトリメトキシシラン、3−アミノプロピルトリエトキシシラン、3−アミノプロピルメチルジメトキシシラン、4−アミノブチルトリメトキシシランなどが挙げられる。これらの中でも、3−アミノプロピルトリメトキシシラン、3−アミノプロピルトリエトキシシラン、3−アミノプロピルメチルジメトキシシランが好ましく、3−アミノプロピルトリメトキシシラン、3−アミノプロピルトリエトキシシランがさらに好ましい。シランカップリング剤は市販品をも使用でき、たとえば、サイラエース330、510(商品名、チッソ(株)製)などが挙げられる。
(実施例1)
3−グリシドキシプロピルトリメトキシシラン(商品名:サイラエース510、シランカップリング剤、チッソ(株)製)50gおよびアセチレンジオール混合物(商品名:オルフィンPD001、ノニオン系界面活性剤、日信化学工業(株)製)1gに全量が1000gになるようにイオン交換水を加えて混合し、本発明の電着塗装前処理用組成物を製造した。
3−グリシドキシプロピルトリメトキシシランに代えて3−アミノプロピルトリメトキシシラン(商品名:サイラエース330、シランカップリング剤、チッソ(株)製)を使用する以外は実施例1と同様にして、本発明の電着塗装前処理用組成物を製造した。この電着塗装前処理用組成物を用いる以外は、実施例1と同様にして、塗装試料板を作製した。
電着塗装前処理を行わない以外は、実施例1と同様にして、塗装試料板を作製した。
実施例1、2および比較例1で得られた塗装試料板を下記の性能試験に供した。結果を表1に示す。
テストピースの外観を目視により観察し、硬化被膜表面にピンホール、傷などがないものを「○」と評価した。
ASTM D3359−93に準拠し、碁盤目クロスカットテープ剥離を行い、その剥離残渣面積から5B〜0Bの評価を行った。
RCA摩耗試験機(Norman Tool社製)を使用し、温度25℃、湿度60%で試験を行い、素地面が露出するまでの回数を求めた。
Claims (9)
- シランカップリング剤を含むことを特徴とする電着塗装前処理用組成物。
- シランカップリング剤とともに界面活性剤を含むことを特徴とする請求項1記載の電着塗装前処理用組成物。
- シランカップリング剤1〜20重量%と、界面活性剤0.1〜2.0重量%とを含み、残部が水であることを特徴とする請求項2記載の電着塗装前処理用組成物。
- シランカップリング剤がアルコキシシラン化合物から選ばれる1種または2種以上であることを特徴とする請求項1〜3のいずれか1つに記載の電着塗装前処理用組成物。
- アルコキシシラン化合物がグリシジル基含有アルコキシシラン化合物およびアミノ基含有アルコキシシラン化合物から選ばれる1種または2種以上であることを特徴とする請求項1〜4のいずれか1つに記載の電着塗装前処理用組成物。
- 界面活性剤がノニオン系界面活性剤であることを特徴とする請求項2〜5のいずれか1つに記載の電着塗装前処理用組成物。
- 少なくとも表面の一部または全面が金属からなる被処理品の金属表面に電着塗装によって塗膜を形成し、この塗膜に紫外線を照射して硬化させる電着塗装方法において、該被処理品の金属表面を請求項1〜6のいずれか1つの電着塗装前処理用組成物によって前処理した後に、電着塗装によって金属表面に塗膜を形成することを特徴とする電着塗装方法。
- 少なくとも表面の一部または全面が金属からなる被処理品を電着塗装前処理用組成物中に浸漬することによって、金属表面に前処理を施すことを特徴とする請求項7記載の電着塗装方法。
- 少なくとも表面の一部または全面が金属からなる被処理品を、液温25〜60℃の電着塗装前処理用組成物に10〜180秒間浸漬することを特徴とする請求項7または8記載の電着塗装方法。
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JP2013253306A (ja) * | 2012-06-08 | 2013-12-19 | Dipsol Chemicals Co Ltd | 塗装ステンレス鋼部材 |
JP2015040306A (ja) * | 2013-08-22 | 2015-03-02 | エア プロダクツ アンド ケミカルズ インコーポレイテッドAir Products And Chemicals Incorporated | 組成物とこれを使用する流動性を有する酸化物堆積のための方法 |
WO2016052146A1 (ja) * | 2014-09-29 | 2016-04-07 | 豊田合成 株式会社 | 装飾めっき製品、取付構造、製造方法、及び取り付け方法 |
KR101801331B1 (ko) * | 2017-09-06 | 2017-11-24 | 대양프라텍 주식회사 | 전착 도장 방법 |
KR102431734B1 (ko) * | 2022-03-10 | 2022-08-10 | 김태환 | 전착도장 시스템 및 이를 이용한 전착도장방법 |
JP7495704B2 (ja) | 2021-02-12 | 2024-06-05 | トヨタ車体株式会社 | めっき部品の製造方法 |
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KR102431734B1 (ko) * | 2022-03-10 | 2022-08-10 | 김태환 | 전착도장 시스템 및 이를 이용한 전착도장방법 |
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