JP6898347B2 - エラストマーコーティング - Google Patents
エラストマーコーティング Download PDFInfo
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- JP6898347B2 JP6898347B2 JP2018549375A JP2018549375A JP6898347B2 JP 6898347 B2 JP6898347 B2 JP 6898347B2 JP 2018549375 A JP2018549375 A JP 2018549375A JP 2018549375 A JP2018549375 A JP 2018549375A JP 6898347 B2 JP6898347 B2 JP 6898347B2
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Description
ポリイソプレン(PIP)、ヘキサン、クロロホルム、テトラヒドロフラン(THF)、ヘキサデカン、及び2,2-アゾビスイソブチロニトリル(AIBN)をSigma-Aldrich社より入手した。1H,1H,2H,2H-ペルフルオロデシルトリクロロシラン(PFTS)をAlfa Aesar社より入手した。導電性カーボンブラック(CB、Vulcan XC 72(商標))をCabot Corporation社より購入した。すべての化学品は更に改質することなく受け取ったままの状態で使用した。ポリイソプレンペレット、多層カーボンナノチューブ(MWCNT)(直径40〜60nm、長さ1〜2μm)を、Nanostructured & Amorphous Materials, Inc.社(ヒューストン、米国)より商業的に購入した。過酸化物硬化ブチルゴム基材を社内で従来の技術を使用して調製した。BB2030(商標)をLANXESS Deutschland GmbH社より入手し、上記のように過酸化物硬化させた。使用した過酸化物硬化剤は過酸化ジクミルであった。プレポリマーベース及び硬化剤を含有するポリジメチルシロキサン(PDMS)Sylgard(商標)184エラストマーキットをDow Corning Co.社より入手した。
接触角ゴニオメーター(Model 100-00)を使用して、セシル液滴接触角を大気中で室温にて測定した。2種の低表面エネルギーの液体:(1)ヘキサデカン;及び(2)メタノールを接触角測定に使用した。一軸延伸下での試験のため、コーティングを軟質ブチルゴム基材上にスプレーし、続いて架橋及びフッ素化プロセスを行った。次いで基材を2つのリニアクランプの間に取り付け、最大で100%ひずみまで延伸した。
表面モルフォロジーに対する濃度の効果を調べるために、4種の異なる溶液をPIP対CBの様々な比(50:50wt%、45:55wt%、40:60wt%、及び34:66wt%)で使用した。
48mgのMWCNTを400mLのクロロホルム中に溶解させ室温で6時間超音波処理して十分に分散したMWCNT-クロロホルム分散液を得ることにより、実施例8を調製した。次に、32mgのPIPをMWCNT分散液に加え、5時間超音波処理した。得られたPIP/MWCNTクロロホルム懸濁液を蒸発させておよそ5mg/mLのより高い濃度を得た。UV開始剤(AIBN)を200μL THF中に溶解させ、スプレーする前に懸濁液へ加えた。上記のようなエアブラシを使用してブレンドをブチルゴム基材上にスプレーした。PIP及びMWCNT濃度を変化させて同様に実施例9及び10を調製した。すべての試料は超疎油性を示し、ヘキサデカン接触角は150°を超えた(表3)。
34% PDMS及び66% CBを含有するPDMSコーティングを実施例3と同様に調製したが、AIBNの使用を省略し、より高濃度の40mg/mLを使用した。得られた表面は超疎油性であり、接触角は152±3°であった。
PDMS/MWCNTを実施例9と同様に調製したが、AIBNの使用を省略した。実施例15及び16は超疎油性を実証した。
LANXESS BB2030を、30〜40mg/mLのより高い濃度を必要とすることを除いて実施例3と同様に調製した。両方の表面は超疎油性であり、接触角は>150°であった。
PIP/CBコーティングを実施例3と同様に調製したが、ブチルシートではなく様々な表面上にスプレーした。すべての表面は超疎油性であった。
LANXESS BB2030/CBコーティングを実施例17と同様に調製したが、ブチルシートではなく様々な表面上にスプレーした。すべての表面は超疎油性であった。
上記のすべての超疎油性表面は、実施例1に記載されるように1H,1H,2H,2H-ペルフルオロデシルトリクロロシラン(PFTS)を使用して最終表面処理が施された。別のフッ素化法として、実施例1に記載される同様の方法を使用してPIP+CNT溶液を調製した。次に、架橋したコーティングをヘキサン溶液中の0.5wt% PFTSへ浸漬し、ヘキサン中ですすいで余分なPFTSを除去し、ドラフト内で乾燥させた。ヘキサデカン接触角は153±3°であり、表面は超疎油性であることが分かった。
Claims (16)
- エラストマー及び導電性ナノ粒子を合わせた質量に対して少なくとも30wt%の導電性ナノ粒子を含有し、ポリ(イソブテン-co-イソプレン)を含むエラストマーフィルム、或いは、
エラストマー及び導電性ナノ粒子を合わせた質量に対して少なくとも52wt%の導電性ナノ粒子を含み、ポリイソブテン、ポリイソプレン、水素化ニトリルブタジエン、ポリジメチルシロキサン又はそれらの混合物を含むエラストマーフィルム
を含む、ポリマーナノ複合材コーティングであって、
前記導電性ナノ粒子はアスペクト比が20未満であるナノ粒子については平均粒径が500nm未満であり、又はアスペクト比が20以上であるナノ粒子については平均粒径が2000nm未満であり、前記導電性ナノ粒子は凹角モルフォロジーを有するマイクロサイズ及びナノサイズの凝集体を形成している、ポリマーナノ複合材コーティング。 - 前記ナノ粒子の平均粒径が10〜50nmである、及び/又はアスペクト比が40未満である、請求項1に記載のコーティング。
- 前記ナノ粒子が、エラストマー中に埋め込まれた、100〜200nmのサイズのナノサイズの凝集体及び50〜500μmのサイズのマイクロサイズの凝集体を形成している、請求項1又は2に記載のコーティング。
- 前記ナノ粒子がカーボンブラック、カーボンナノチューブ、又はそれらの混合物を含む、請求項1から3のいずれか一項に記載のコーティング。
- 前記エラストマーが架橋されている、請求項1から4のいずれか一項に記載のコーティング。
- コーティングの表面上に、フッ素化化合物を更に含む、例えばペルフルオロシランを更に含む、請求項1から5のいずれか一項に記載のコーティング。
- フッ素化化合物がペルフルオロシランを含む、請求項6に記載のコーティング。
- コーティングが100%までのひずみで一軸延伸された場合に、0.015Ohm・m未満の電気抵抗率、及び150°を超えるヘキサデカンとの接触角を備える、請求項1から7のいずれか一項に記載のコーティング。
- 請求項1から8のいずれか一項に記載のコーティングをその上にコーティングされて含む、基材。
- ポリマーナノ複合材コーティングを製造する方法であって、前記方法は、エラストマー及び導電性ナノ粒子のブレンドを基材上にスプレーして基材上にフィルムを形成する工程を含み、前記ブレンドはエラストマー及び導電性ナノ粒子を合わせた質量に対して少なくとも52wt%の導電性ナノ粒子を含み、前記導電性ナノ粒子はアスペクト比が20未満であるナノ粒子については平均粒径が500nm未満であり、又はアスペクト比が20以上であるナノ粒子については平均粒径が2000nm未満であり、前記導電性ナノ粒子は基材上でマイクロサイズ及びナノサイズの凝集体を形成し、凝集体は凹角モルフォロジーを有する、方法。
- フィルムを硬化又は架橋させる工程を更に含む、請求項10に記載の方法。
- 前記ブレンドが溶媒中のエラストマー及びナノ粒子の分散液を含み、前記エラストマー及びナノ粒子が合わせて4〜50mg/mlの固体濃度で分散液中に存在する、請求項10又は11に記載の方法。
- フィルムの表面上にフッ素化部分を含ませる工程を更に含む、請求項10から12のいずれか一項に記載の方法。
- 前記エラストマーが、無水物基、カルボキシル基、ヒドロキシル基、エポキシ基、ポリエチレンオキシド基、又はハロ基、又はそれらの混合物のうちの1つ又は複数で官能化された、ポリイソプレン、ポリ(イソブテン-co-イソプレン)、ポリ(イソブテン-co-イソプレン)を含む、請求項10から13のいずれか一項に記載の方法。
- 前記ナノ粒子が、平均粒径が10〜50nmでありアスペクト比が40未満であるカーボンナノチューブのカーボンブラックを含む、請求項10から14のいずれか一項に記載の方法。
- 前記ブレンドが、エラストマー及びナノ粒子を合わせた質量に対して55〜75wt%のナノ粒子を含む、請求項10から15のいずれか一項に記載の方法。
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EP15199556.0A EP3178889A1 (en) | 2015-12-11 | 2015-12-11 | Elastomeric coatings |
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PCT/CA2016/051445 WO2017096482A1 (en) | 2015-12-11 | 2016-12-09 | Elastomeric coatings |
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JP2019505649A (ja) | 2019-02-28 |
EP3387076A4 (en) | 2019-09-11 |
SA518391777B1 (ar) | 2022-03-06 |
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CA3011164A1 (en) | 2017-06-15 |
EP3387076A1 (en) | 2018-10-17 |
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EP3178889A1 (en) | 2017-06-14 |
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