JP2011241479A - グラフェン薄膜を用いた樹脂のめっき方法 - Google Patents
グラフェン薄膜を用いた樹脂のめっき方法 Download PDFInfo
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Abstract
【解決手段】 樹脂基材上にグラフェン薄膜を形成し、前記グラフェン薄膜が形成された前記樹脂基材に電気めっきを行うことを含んで樹脂のめっき方法を構成する。
【選択図】 図1
Description
(1)樹脂前処理
表面を親水化し、NH2(アミン基)形成のためにプラズマ処理した。その後、表面に水滴を落とし、接触角テストを通して親水化程度を把握した。
酸化グラフェンをハマーズ法(William S.Hummers Jr.,Richard E.Offeman,Preparation of graphite oxide,J.Am.Chem.Soc.,1958,80(6),p 1339)で製造する。すなわち、天然グラファイト(Hyundai Coma CO.,LTDのHC―590)10g、H2SO4250ml及びNaNO35gを混合し、これを氷水に浸して冷却した後、20℃で10分間維持した。その後、KMnO430gを1時間の間徐々に添加し、温度を上昇させながら前記混合物を35℃で2時間の間維持した後、常温に冷却した。その後、DIWを450ml添加した。余分のKMnO4を還元するために、追加的に2LのDIW及び35%のH2O215mlを順次30分間添加し、反応を終了した。得られた酸化グラフェンをろ過し、5%のHCl(5L)で1回洗浄し、pHが7になるようにDIWで3回洗浄し、60℃の真空オーブンで24時間乾燥した。このとき、HClで洗浄する理由は、残っているKMnO4を除去するためである。
前記の製造された酸化グラフェン100mgに100mlのDIWを添加し、4時間の間超音波を照射し、酸化グラフェンに転換されていないグラファイトを除去するために遠心分離した。
酸化グラフェン分散液200μlを5cm×5cmのABS樹脂及びPC樹脂の表面にドロッピングして得たABS樹脂及びPC樹脂をそれぞれNaBH4溶液50mMに2.5日間浸漬して酸化グラフェンを還元し、酸化グラフェンの還元物を形成した。
酸化グラフェン薄膜が形成された試片に、樹脂めっき用活性化剤であるNP―8 10〜15%と塩酸10〜15%が混合された35〜40℃の活性化溶液中で5分間活性化処理を行い、これに再び40〜45℃の10%の硫酸溶液中で2分間加速活性化処理を行った後、銅濃度2〜3g/L、EDTA 20〜25g/L、苛性ソーダ5〜6g/L、ホルムアルデヒド3〜5ml/Lの無電解銅めっき液中で30〜35℃で10分間浸漬処理を行い、めっきに必要な電気伝導層を形成した。ただし、この段階は選択可能である。
試片に、硫酸銅200〜250g/L、硫酸30〜35ml/Lを適切な比率で混合した液を用いて25〜30℃で5〜10分間3〜5A/dm2の電流密度で光沢銅めっきを行った。
(1)膨張グラファイトの製造
天然グラファイト、KMnO4及びHNO3を1:2:1の質量比で混合した後、これにマイクロウェーブを30秒間照射した。
上述した方法で製造された膨張グラファイト100mgをNMP(n―methyl―2―pyrrolidinone)250mlに混合した後、ソニケータ(Sonicator)で分散した。
グラフェン薄膜を形成するために直径が47mmである円形フィルタを用いて真空ろ過を行い、NMPに分散されたグラファイトをNMPと分離した。ろ過後、常温で6時間乾燥させた。NMPから分離されたグラファイトをDIWに浮かばせ、DIWバスでグラフェン薄膜に水転写を行った。
前記製造例1及び2で記載した方法で、グラフェン薄膜が形成された樹脂の電気伝導度を測定した。電気伝導度は、4―ポイントプローブ方法(4―point probe method)を用いて測定した。4―ポイントプローブ方法は、試片に一定の間隔で形成されている多数の接点から4個の接点を選択した後、4個の接点のうち内側の二つの接点には電圧端子を接続し、外側の二つの接点には電流端子を接続することによって該当の測定領域に対する体積電気抵抗を測定する方法である。
Claims (12)
- 樹脂基材上にグラフェン薄膜を形成し、
前記グラフェン薄膜が形成された前記樹脂基材に電気めっきを行うことを含む樹脂のめっき方法。 - 前記グラフェン薄膜を形成するのは、
前記樹脂基材に酸化グラフェン分散液をコーティングし、
前記のコーティングされた酸化グラフェンを還元することを含む、請求項1に記載の樹脂のめっき方法。 - 前記樹脂基材に前記酸化グラフェン分散液をコーティングする前に、前記樹脂基材上の表面にアミン基を形成することをさらに含む、請求項2に記載の樹脂のめっき方法。
- 前記アミン基を形成するのは、ArとN2の混合気体、H2とN2の混合気体及びNH3からなるグループから選択された気体を用いてプラズマ処理によって前記アミン基を形成する、請求項3に記載の樹脂のめっき方法。
- 前記グラフェン薄膜を形成するのは、
膨張グラファイト分散溶液を前記樹脂基材にコーティングすることを含む、請求項1に記載の樹脂のめっき方法。 - 前記膨張グラファイト分散溶液をろ過し、
前記のろ過された膨張グラファイト分散溶液を水転写(wet transfer)よって前記樹脂基材にコーティングすることをさらに含む、請求項5に記載の樹脂のめっき方法。 - 前記グラフェン薄膜が形成された前記樹脂基材に銅めっきを行うことをさらに含む、請求項1に記載の樹脂のめっき方法。
- 前記銅めっきが行われた前記樹脂基材に、Ni、Cu、Sn及びZnからなるグループから一つ以上選択した金属で電気めっきを行うことをさらに含む、請求項7に記載の樹脂のめっき方法。
- 前記グラフェン薄膜が形成された前記樹脂基材に銅めっきを行うことをさらに含む、請求項5に記載の樹脂のめっき方法。
- 前記銅めっきが行われた前記樹脂基材に、Ni、Cu、Sn及びZnからなるグループから一つ以上選択した金属で電気めっきを行うことをさらに含む、請求項9に記載の樹脂のめっき方法。
- 前記グラフェン薄膜に、Ni、Cu、Sn及びZnからなるグループから一つ以上選択した金属で電気めっきを行うことをさらに含む、請求項1に記載の樹脂のめっき方法。
- 前記グラフェン薄膜に、Ni、Cu、Sn及びZnからなるグループから一つ以上選択した金属で電気めっきを行うことをさらに含む、請求項5に記載の樹脂のめっき方法。
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Also Published As
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KR20110127018A (ko) | 2011-11-24 |
US20110284388A1 (en) | 2011-11-24 |
EP2388355A1 (en) | 2011-11-23 |
EP2615194A2 (en) | 2013-07-17 |
EP2388355B1 (en) | 2013-06-12 |
EP2615194A3 (en) | 2014-08-20 |
CN102251233A (zh) | 2011-11-23 |
KR101537638B1 (ko) | 2015-07-17 |
JP5774367B2 (ja) | 2015-09-09 |
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