JP5735430B2 - 伝導性および耐腐食性が優れたコーティング組成物、その製造方法およびそれを用いてコーティングされた物品 - Google Patents
伝導性および耐腐食性が優れたコーティング組成物、その製造方法およびそれを用いてコーティングされた物品 Download PDFInfo
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- JP5735430B2 JP5735430B2 JP2011538536A JP2011538536A JP5735430B2 JP 5735430 B2 JP5735430 B2 JP 5735430B2 JP 2011538536 A JP2011538536 A JP 2011538536A JP 2011538536 A JP2011538536 A JP 2011538536A JP 5735430 B2 JP5735430 B2 JP 5735430B2
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Description
本発明のさらに他の目的は、前記伝導性および耐腐食性が優れたコーティング剤組成物で固定された物品を提供することにある。
以下、実施例を介して本発明をより詳細に説明しようとする。本発明は、以下、本発明を例示するための実施例などによってさらによく理解されられるが、本発明の範囲がこれらの実施例によって制限されるものではない。
下記表1のように、ベース樹脂であるポリエステル系とエポキシ系樹脂の各々に有機粘土、カーボンブラックおよびアルミニウム粉末を配合して、一般攪拌機、高速分散機または、超音波発生機をそれぞれ用いて決まった時間の間に混合してコーティング剤組成物を製造した後、前記コーティング剤組成物の分散度を測定した。高速分散機は、ディスパーマット(Dispermat;VMA-GETZMANN, D-51580)を使用し、超音波発生機(Sonic & Materials, VCX750)は、300W出力で使用した。有機粘土(Organo Clay)は、有機化されたスメクタイト系層状化合物(入手処:NANOCOR, USA)を使用した。使用されたカーボンブラックは、平均粒子サイズが2μmのデグサ社(Degussa Corp.)の製品を使用した。アルミニウム金属粉末は、平均粒子サイズが約3μmであるものを使用した。
ベース樹脂として分子量9,000〜10,000g/moleのポリエステル系樹脂(以下、樹脂Aという)とメラミン系硬化剤を10:1の重量比で混合して1次混合物を得た後、カーボンブラックを前記1次混合物に添加した後に一般攪拌機を用いて約3分間1,000rpmで攪拌して2次混合物を得た。続いて、この組成物にアルミニウム粉末および有機粘土(Organo Clay,スメクタイト系層状化合物、入手処:NANOCOR,USA)を入れて超音波発生機を用いて再び10分の間混合してコーティング剤組成物を製造した。下記表2に記載されたようなコーティング剤組成物を残部溶媒としてキシレンを使用して適正粘度に(Ford cup #4:60秒)合わせた後、鋼板の厚さ0.5T、75×150mmサイズの鋼板の片面に乾燥塗膜の厚さが8μmになるようにバーコーティングした。前記コーティング剤組成物でコーティングされた鋼板試片は、熱風乾燥機で熱風20.3Hz、PMT(Peak Metal Temperature)230℃、硬化時間は18.1秒にして硬化させ、コーティング剤組成物で処理された鋼板試片を製造した。
−優秀:120時間経過後、白さびの発生なく、240時間経過後、白さび発生面積5%以下
−良好:120時間経過後、白さび発生面積5%未満
−不十分:120時間経過後、白さび発生面積5%以上と50%未満
−不良:120時間経過後、白さび発生面積50%以上
樹脂Aと樹脂B(分子量5,000〜6,000g/molを有するポリエステル系樹脂)の各々にカーボンブラック5重量部、アルミニウム粉末15重量部、硬化剤10重量部および有機化された粘土(スメクタイト系)A(商品名:I.28E、NANOCOR,USA)またはB(商品名:I.33M、NANOCOR,USA)5重量部を混合して混合物を得た後、前記混合物をそれぞれ一般攪拌機で約3分間攪拌した後に超音波発生機で約10分間分散させてコーティング剤組成物を製造した。続いて、前記コーティング剤組成物を前記実施例2と同様な方法で鋼板にコーティングした後、硬化させて前記コーティング剤組成物でコーティングされた鋼板試片の表面抵抗と耐食性を測定し、その結果を表3に示した。
前記実施例3と同様な方法で樹脂Aにカーボンブラック、アルミニウム粉末と硬化剤を表4に記載したように混合するが、有機粘土の添加量は2.5、5、7.5重量部に変化させてそれぞれのコーティング剤組成物を製造した。製造されたコーティング液を前記実施例3と同様な方法で鋼板にコーティングして硬化させ、前記コーティング剤組成物でコーティングされた鋼板の表面抵抗と耐食性を測定した。有機粘土の添加は、表面抵抗値を大きく変化させなかったが、耐食性は顕著に向上させた。有機粘土の含有量が2.5〜7.5重量部である場合、前記コーティング剤組成物でコーティングされた鋼板の表面抵抗と耐食性は、ほとんど変化がなかった。
Claims (7)
- ポリエステル樹脂、エポキシ樹脂、ポリウレタン樹脂、アクリル樹脂、ポリオレフィン樹脂、フッ素樹脂、ポリカーボネート樹脂およびフェノール樹脂から構成される群から選択された1種以上のベース樹脂100重量部;メラミン系硬化剤が1−20重量部;カーボンブラックおよびカーボンナノチューブのうち1種以上3−7重量部;金属粉末1−20重量部;および有機化された粘土2.5−7.5重量部を含むコーティング剤組成物。
- 前記金属粉末は、Al、Cu、Ni、Zn、Fe、Mn、Co、TiおよびSnから構成される群から選択された1種以上である請求項1に記載のコーティング剤組成物。
- 前記有機化された粘土は、カオリン(Kaolin)、サーパンタイン(Serpentine)、マイカ(Mica)、バーミキュライト(Vermiculite)、スメクタイト(Smectite)、フィロシリケート(Phyllosilicate)または、これらの組合せである請求項1に記載のコーティング剤組成物。
- ポリエステル樹脂、エポキシ樹脂、ポリウレタン樹脂、アクリル樹脂、ポリオレフィン樹脂、フッ素樹脂、ポリカーボネート樹脂およびフェノール樹脂から構成される群から選択された1種以上のベース樹脂100重量部;メラミン系硬化剤が1−20重量部;カーボンブラックおよびカーボンナノチューブのうち1種以上3−7重量部;金属粉末1−20重量部;および有機化された粘土2.5−7.5重量部を超音波を用いて均一に分散させる段階を含むコーティング剤組成物の製造方法。
- 請求項1乃至3のうち、いずれか一項に記載のコーティング剤組成物でコーティングされた物品。
- 前記物品は、鋼板、ハードディスクドライブ、PC外装材、LCDケース、PDPケース、携帯電話、PNP(Plug and Play)、電子ナビゲーター、MP3(MPEG 1 Layer 3)、ノートパソコン、木材、プラスチックおよびセラミックから構成される群から選択される請求項5に記載の物品。
- 前記鋼板は、亜鉛メッキ鋼板である請求項6に記載の物品。
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PCT/KR2008/007628 WO2010062002A1 (en) | 2008-11-27 | 2008-12-23 | An electrically conductive and anti-corrosive coating composition, a method for preparing the same and an article coated with the same |
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KR100604984B1 (ko) | 2004-06-10 | 2006-07-31 | 한국생산기술연구원 | 나노점토가 포함된 부식방지 코팅제 및 그 제법 |
JP4336304B2 (ja) * | 2004-12-24 | 2009-09-30 | 新日本製鐵株式会社 | 導電性を有する吸熱性塗装鋼板およびその製造方法 |
JP4527587B2 (ja) | 2005-03-31 | 2010-08-18 | 株式会社神戸製鋼所 | 放熱性に優れた塗装金属材およびこれを用いた電子機器部品 |
KR100701019B1 (ko) * | 2005-05-31 | 2007-03-27 | 에스케이 텔레콤주식회사 | 휴대폰 카메라를 이용한 통합 영상 서비스 시스템 및 방법 |
KR100872833B1 (ko) | 2005-11-11 | 2008-12-09 | 한국생산기술연구원 | 유기점토를 포함하는 부식방지용 코팅제 조성물 및 이의제조 제법 |
JP4767822B2 (ja) * | 2005-12-06 | 2011-09-07 | 新日本製鐵株式会社 | 表面処理金属板 |
US20070231579A1 (en) * | 2006-03-29 | 2007-10-04 | Ppg Industries Ohio, Inc. | Weldable coating compositions, substrates and related methods |
KR100804934B1 (ko) | 2006-12-27 | 2008-02-20 | 주식회사 포스코 | 방열특성이 우수한 방열수지 조성물, 이를 이용한 강판처리방법 및 이에 따라 처리된 강판 |
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US8329313B2 (en) | 2012-12-11 |
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