JP6856608B2 - 金属アロイ上でのドープ導電性ポリマーの直接的な電気化学的合成 - Google Patents
金属アロイ上でのドープ導電性ポリマーの直接的な電気化学的合成 Download PDFInfo
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- JP6856608B2 JP6856608B2 JP2018214451A JP2018214451A JP6856608B2 JP 6856608 B2 JP6856608 B2 JP 6856608B2 JP 2018214451 A JP2018214451 A JP 2018214451A JP 2018214451 A JP2018214451 A JP 2018214451A JP 6856608 B2 JP6856608 B2 JP 6856608B2
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- metal surface
- aluminum
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- polyaniline
- metal
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- 229910001092 metal group alloy Inorganic materials 0.000 title description 6
- 229920001940 conductive polymer Polymers 0.000 title description 5
- 230000015572 biosynthetic process Effects 0.000 title description 4
- 238000003786 synthesis reaction Methods 0.000 title 1
- 239000002184 metal Substances 0.000 claims description 73
- 229910052751 metal Inorganic materials 0.000 claims description 72
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 63
- 229920000767 polyaniline Polymers 0.000 claims description 59
- 238000000034 method Methods 0.000 claims description 35
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 28
- 229910000838 Al alloy Inorganic materials 0.000 claims description 27
- 229910052782 aluminium Inorganic materials 0.000 claims description 25
- 238000005260 corrosion Methods 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 25
- 230000007797 corrosion Effects 0.000 claims description 24
- 239000003774 sulfhydryl reagent Substances 0.000 claims description 23
- 239000000178 monomer Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 125000002490 anilino group Chemical group [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 claims description 4
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 2
- 229910021641 deionized water Inorganic materials 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims description 2
- 125000003396 thiol group Chemical class [H]S* 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 20
- 238000000576 coating method Methods 0.000 description 19
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- 239000011248 coating agent Substances 0.000 description 15
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- 239000011651 chromium Substances 0.000 description 7
- 150000002739 metals Chemical class 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- RMVRSNDYEFQCLF-UHFFFAOYSA-N thiophenol Chemical compound SC1=CC=CC=C1 RMVRSNDYEFQCLF-UHFFFAOYSA-N 0.000 description 7
- 238000002048 anodisation reaction Methods 0.000 description 6
- -1 poly (ethyleneoxy) Polymers 0.000 description 6
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- 238000004519 manufacturing process Methods 0.000 description 5
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- OJGMBLNIHDZDGS-UHFFFAOYSA-N N-Ethylaniline Chemical compound CCNC1=CC=CC=C1 OJGMBLNIHDZDGS-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- XNLICIUVMPYHGG-UHFFFAOYSA-N pentan-2-one Chemical compound CCCC(C)=O XNLICIUVMPYHGG-UHFFFAOYSA-N 0.000 description 4
- WCDSVWRUXWCYFN-UHFFFAOYSA-N 4-aminobenzenethiol Chemical compound NC1=CC=C(S)C=C1 WCDSVWRUXWCYFN-UHFFFAOYSA-N 0.000 description 3
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- IJAPPYDYQCXOEF-UHFFFAOYSA-N phthalazin-1(2H)-one Chemical compound C1=CC=C2C(=O)NN=CC2=C1 IJAPPYDYQCXOEF-UHFFFAOYSA-N 0.000 description 3
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 3
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- GGZHVNZHFYCSEV-UHFFFAOYSA-N 1-Phenyl-5-mercaptotetrazole Chemical compound SC1=NN=NN1C1=CC=CC=C1 GGZHVNZHFYCSEV-UHFFFAOYSA-N 0.000 description 2
- XOHZHMUQBFJTNH-UHFFFAOYSA-N 1-methyl-2h-tetrazole-5-thione Chemical compound CN1N=NN=C1S XOHZHMUQBFJTNH-UHFFFAOYSA-N 0.000 description 2
- ZEQIWKHCJWRNTH-UHFFFAOYSA-N 1h-pyrimidine-2,4-dithione Chemical compound S=C1C=CNC(=S)N1 ZEQIWKHCJWRNTH-UHFFFAOYSA-N 0.000 description 2
- MLPVBIWIRCKMJV-UHFFFAOYSA-N 2-ethylaniline Chemical compound CCC1=CC=CC=C1N MLPVBIWIRCKMJV-UHFFFAOYSA-N 0.000 description 2
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- SHOYSUHLFYQDTR-UHFFFAOYSA-N 4-methylbenzenethiol Chemical compound CC1=CC=C(C=C1)S.CC1=CC=C(C=C1)S SHOYSUHLFYQDTR-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 150000001448 anilines Chemical class 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- RNVCVTLRINQCPJ-UHFFFAOYSA-N o-toluidine Chemical compound CC1=CC=CC=C1N RNVCVTLRINQCPJ-UHFFFAOYSA-N 0.000 description 2
- QJAOYSPHSNGHNC-UHFFFAOYSA-N octadecane-1-thiol Chemical compound CCCCCCCCCCCCCCCCCCS QJAOYSPHSNGHNC-UHFFFAOYSA-N 0.000 description 2
- 125000000962 organic group Chemical group 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
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- SUVIGLJNEAMWEG-UHFFFAOYSA-N propane-1-thiol Chemical compound CCCS SUVIGLJNEAMWEG-UHFFFAOYSA-N 0.000 description 2
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- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
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- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Divinylene sulfide Natural products C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 1
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- XSBJUSIOTXTIPN-UHFFFAOYSA-N aluminum platinum Chemical compound [Al].[Pt] XSBJUSIOTXTIPN-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910002056 binary alloy Inorganic materials 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- ZNEWHQLOPFWXOF-UHFFFAOYSA-N coenzyme M Chemical compound OS(=O)(=O)CCS ZNEWHQLOPFWXOF-UHFFFAOYSA-N 0.000 description 1
- 238000009500 colour coating Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 description 1
- 235000018417 cysteine Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- LMBWSYZSUOEYSN-UHFFFAOYSA-N diethyldithiocarbamic acid Chemical compound CCN(CC)C(S)=S LMBWSYZSUOEYSN-UHFFFAOYSA-N 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- MZGNSEAPZQGJRB-UHFFFAOYSA-N dimethyldithiocarbamic acid Chemical compound CN(C)C(S)=S MZGNSEAPZQGJRB-UHFFFAOYSA-N 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 125000000107 disulfanyl group Chemical group [*]SS[H] 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- BRWIZMBXBAOCCF-UHFFFAOYSA-N hydrazinecarbothioamide Chemical compound NNC(N)=S BRWIZMBXBAOCCF-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
- 208000020816 lung neoplasm Diseases 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- ZHIPSMIKSRYZFV-UHFFFAOYSA-N methyl 4-amino-3-methylbenzoate Chemical compound COC(=O)C1=CC=C(N)C(C)=C1 ZHIPSMIKSRYZFV-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- ZIOFXYGGAJKWHX-UHFFFAOYSA-N n,2,4-trimethylaniline Chemical compound CNC1=CC=C(C)C=C1C ZIOFXYGGAJKWHX-UHFFFAOYSA-N 0.000 description 1
- PEMGGJDINLGTON-UHFFFAOYSA-N n-(3-aminophenyl)acetamide Chemical compound CC(=O)NC1=CC=CC(N)=C1 PEMGGJDINLGTON-UHFFFAOYSA-N 0.000 description 1
- VSHTWPWTCXQLQN-UHFFFAOYSA-N n-butylaniline Chemical compound CCCCNC1=CC=CC=C1 VSHTWPWTCXQLQN-UHFFFAOYSA-N 0.000 description 1
- UYVJDPLKBZVVFV-UHFFFAOYSA-N n-hexyl-3-methylaniline Chemical compound CCCCCCNC1=CC=CC(C)=C1 UYVJDPLKBZVVFV-UHFFFAOYSA-N 0.000 description 1
- OXHJCNSXYDSOFN-UHFFFAOYSA-N n-hexylaniline Chemical compound CCCCCCNC1=CC=CC=C1 OXHJCNSXYDSOFN-UHFFFAOYSA-N 0.000 description 1
- GGMJJPPYEFOAHJ-UHFFFAOYSA-N n-phenyl-1,2,3,4-tetrahydronaphthalen-1-amine Chemical compound C12=CC=CC=C2CCCC1NC1=CC=CC=C1 GGMJJPPYEFOAHJ-UHFFFAOYSA-N 0.000 description 1
- CDZOGLJOFWFVOZ-UHFFFAOYSA-N n-propylaniline Chemical compound CCCNC1=CC=CC=C1 CDZOGLJOFWFVOZ-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- GTDQGKWDWVUKTI-UHFFFAOYSA-N o-aminoacetophenone Chemical compound CC(=O)C1=CC=CC=C1N GTDQGKWDWVUKTI-UHFFFAOYSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- ATGUVEKSASEFFO-UHFFFAOYSA-N p-aminodiphenylamine Chemical compound C1=CC(N)=CC=C1NC1=CC=CC=C1 ATGUVEKSASEFFO-UHFFFAOYSA-N 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920006295 polythiol Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 229910002059 quaternary alloy Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- GUGNSJAORJLKGP-UHFFFAOYSA-K sodium 8-methoxypyrene-1,3,6-trisulfonate Chemical compound [Na+].[Na+].[Na+].C1=C2C(OC)=CC(S([O-])(=O)=O)=C(C=C3)C2=C2C3=C(S([O-])(=O)=O)C=C(S([O-])(=O)=O)C2=C1 GUGNSJAORJLKGP-UHFFFAOYSA-K 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910002058 ternary alloy Inorganic materials 0.000 description 1
- 125000002088 tosyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C([H])([H])[H])S(*)(=O)=O 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
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- C08K5/00—Use of organic ingredients
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Description
航空宇宙産業は、90年以上にわたって、アルミニウムおよびアルミニウムアロイ用の最も効果的な腐食防止剤として、六価クロム(Cr(VI))を含有するプライマーおよび前処理に頼ってきた。残念なことに、Cr(VI)は公知の発癌物質であり、暴露は肺がんを含む深刻な健康被害をもたらしうる。米国労働安全衛生管理局(OSHA)は、可能であれば、Cr(VI)を含有しない塗料およびコーティングによる代替を勧告している(非特許文献1)。したがって、Cr(VI)を含有しない耐食性の塗料およびコーティングについて、塗装においても保守においても、長年にわたって必要とされている。腐食防止用のCr(VI)に代わる有効な選択肢があれば、初回製造プロセスから保守サイクルを経て最終処分プロセスに至るまでのクロム使用が低減されるであろう。
アニリンの電解重合によるPANIの生産は周知のプロセスである。Pournaghi−AzarとHabibiは、硫酸溶液からのアルミニウム表面およびアルミニウム−白金表面上のPANIコーティングを開示している(非特許文献2)。PANIは、不動態化機構による活性金属表面のための腐食保護システムとして発表されている。例えばBiallozorとKupniewskaは、腐食保護のためのアルミニウム上でのPANIの使用を含めて、活性金属への導電ポリマーの電着を概説している(非特許文献3)。
溶液堆積PANI膜、ポリ(エチレンオキシド)(PEO)を持つPANIグラフトポリマー、ならびにキャパシタおよび固体充電池を調製するために2,5−メルカプト−1,3,5−チアジアゾール(DMcT)がドープされた、PEOを持つPANIポリ(エチレンオキシ)−3−アミノベンゾエート(PEAB)コポリマーグラフト、およびPANIも報告されている(非特許文献5)。
本明細書において使用する用語「アニリンモノマー」には、置換アニリンと無置換アニリンが包含される。アニリンモノマーの非限定的な例は、2−(メチルアミノ)アニリン、2,3−ジメチルアニリン、2,4−ジメトキシアニリン、2,5−ジブチルアニリン、2,5−ジメトキシアニリン、2,5−ジメチルアニリン、2,5−ジクロロアニリン、2−アセチルアニリン、2−ブロモアニリン、2−シクロヘキシルアニリン、2−ジメチルアミノアニリン、2−エチルチオアニリン、2−メチル−4−メトキシカルボニルアニリン、2−メチルチオメチルアニリン、2−チオメチルアニリン、3−(n−ブタンスルホン酸)アニリン、3−アセトアミドアニリン、3−アミノ−9−メチルカルバゾール、3−アミノカルバゾール、3−ブロモアニリン、3−フェノキシアニリン、3−プロポキシメチルアニリン、4−(2,4−ジメチルフェニル)アニリン、4−アセトアミドアニリン、4−アミノカルバゾール、4−アミノアニリン、4−ベンジルアニリン、4−ブロモアニリン、4−カルボキシアニリン、4−エチルチオアニリン、4−メルカプトアニリン、4−フェノキシアニリン、4−フェニルチオアニリン、4−プロパノアニリン、4−トリメチルシリルアニリン、5−クロロ−2−エトキシ−アニリン、5−クロロ−2−メトキシ−アニリン、アルキルアニリン、アニリン、エチルアニリン、m−ブチルアニリン、m−ヘキシルアニリン、m−オクチルアニリン、m−トルイジン、メチルアニリン、N−ヘキシル−m−トルイジン、N−(パラアミノフェニル)アニリン、N,N−ジメチルアニリン、N−ヘキシルアニリン、N−メチルアニリン、N−メチル−o−シアノアニリン、N−メチル−2,4−ジメチルアニリン、N−オクチル−m−トルイジン、N−プロピルアニリン、N−プロピル−m−トルイジン、o−シアノアニリン、o−エトキシアニリン、o−エチルアニリン、o−トルイジン、またはテトラヒドロナフチルアニリンである。
本開示のアルミニウムアロイは、銅、鉄、リチウム、マグネシウム、マンガン、ニッケル、ケイ素、銀、バナジウム、亜鉛、またはジルコニウムなどの元素との二元アロイ、三元アロイ、四元アロイ、または他のアロイであることができる。アルミニウムアロイの例は、1100、1350、2014*、2024*、2195*、2219*、2519*、3003、3104、3105、5052、5083、5182、5657、6022、6111、6013*、6061、6063、6201、7005、7075*、7150*、8079、8011(*は航空宇宙産業における使用を示す。「Kirk−Othmer Encyclopedia of Chemical Technology」(ニューヨーク、John Wiley)の1〜64頁にあるSanders著「Aluminum and Aluminum Alloys」(2012)を参照されたい)などがあるが、これらに限定されるわけではない。好ましいアルミニウムアロイは、銅(0.8〜6.5%)、マンガン(0.0〜0.8%)、およびマグネシウム(0.2〜2.5%)とのアロイである。好ましいチタンアロイには6−4および6−6−3がある。本開示において有用な他の金属または金属アロイとして、ハフニウム、ニオブ、タンタル、またはジルコニウムが挙げられる。
陽極酸化浴液は、水とアニリンモノマーとの混合物を含む。浴液用の組成物は水とアニリンモノマー(例えばアニリン)を含み、アニリンモノマーの濃度は約0.1Mから飽和濃度まで、好ましくは約0.2M〜約0.8M、より好ましくは約0.4M〜約0.6Mである。
<実験>
3”×6”×0.032”の2024−T3ベアアルミニウム試験板をメチルn−プロピルケトン(MPK)で布ぶきし、アルカリ洗浄し、脱酸素し、28.6グラム/リットル(0.31M)の濃度のアニリンを含有する10%硫酸溶液中、19ボルトで、さまざまな時間、陽極酸化した。陽極酸化プロセス後に、試験板を脱イオン水中ですすぎ、pH6に調節したDMcTの飽和溶液(12.5グラム/リットル)(0.008M)中、約100℃の温度で、さまざまな時間、封孔処理した。対照試験板はアニリンなしで陽極酸化し、高温のDI水または5%二クロム酸カリウム中で封孔処理した。
図2に、塩水噴霧(ASTM B117に規定されている条件)の2週間暴露後の結果を示す。左側の3枚の試験板は陽極酸化を35分間行ったのに対し、右側の1枚は陽極酸化を20分間行ってから、封孔処理した。図2に示す試験板の裏側を、図3に示す。
標準的方法を使って光反射率を解析した。図4に、PANI−DMcT試験板に関する光反射率の解析を示す。光反射率は、約0.5ミクロンのピークを除けば、陽極酸化アルミニウムに関する文献と類似しており、光反射率の大きさはPANI−DMcT試験板の方が低い。反射率解析は、Nicolet 6700 FTIR(Thermo Fisher Scientific, Inc)に接続したLabsphere製の積分球(ニューハンプシャー州ノースサトン)アタッチメントで行った。
ポリアニリンは、2024アルミニウムアロイの陽極酸化中にうまく電解重合された。その結果生じるコーティングは、硫酸/アニリン陽極酸化浴中でドープされ、水ですすぐことにより、容易に脱ドープされた。PANIコーティングされた酸化物をDMcT下で封孔処理すると、青色から黄緑色への変色によって示されるとおり、PANIは再ドープされた。コーティングは最初は導電性であったが、時間の経過と共にその導電性を失った。塩水噴霧の結果は、酸化物が厚いほど、より薄い酸化物との対比で、より長期間にわたってドープされた状態が保たれることを示している。
Claims (9)
- 耐食性陽極酸化金属表面を調製するために、金属表面上にドープポリアニリンを作製するための方法であって、
金属表面上にアニリンモノマーを電気化学的に堆積させて塩基性ポリアニリンを形成するステップ、および
前記金属表面上にドープポリアニリンを形成するために、前記金属表面上の前記塩基性ポリアニリンをチオールインヒビターを含む封孔溶液に暴露するステップを含み、
前記暴露するステップにおいて、前記封孔溶液が20℃〜100℃の温度を有し、
前記暴露するステップが、5分〜30分間行われ、
六価クロム試薬を使用しない、方法。 - 前記金属表面がアルミニウムまたはアルミニウムアロイを含む、請求項1に記載の方法。
- 前記アルミニウムまたはアルミニウムアロイ金属がアルミニウム被覆アルミニウムアロイである、請求項2に記載の方法。
- 前記金属表面がチタンまたはチタンアロイを含む、請求項1から3の何れか一項に記載の方法。
- 前記アニリンモノマーがアニリンである、請求項1から4の何れか一項に記載の方法。
- 前記チオールインヒビターがDMcTである、請求項1から5の何れか一項に記載の方法。
- 前記封孔溶液が、1×10 −4 M〜1×10 −3 Mの濃度でチオールを含む、請求項1から6の何れか一項に記載の方法。
- 前記封孔溶液が、5.0〜7.5のpHを有する、請求項1から7の何れか一項に記載の方法。
- 脱イオン水ですすぐことによって、前記金属表面上のドープポリアニリンを脱ドープするステップ、および
すすがれた金属表面を前記封孔溶液で封孔することにより、脱ドープされたポリアニリンを再ドープするステップをさらに含む、請求項1から8の何れか一項に記載の方法。
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