CN117019595A - Surface corrosion-resistant process of three-dimensional composite aluminum plate - Google Patents
Surface corrosion-resistant process of three-dimensional composite aluminum plate Download PDFInfo
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- CN117019595A CN117019595A CN202311302366.XA CN202311302366A CN117019595A CN 117019595 A CN117019595 A CN 117019595A CN 202311302366 A CN202311302366 A CN 202311302366A CN 117019595 A CN117019595 A CN 117019595A
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- Prior art keywords
- polymer
- polyaniline
- aluminum plate
- corrosion
- parts
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 106
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 238000005260 corrosion Methods 0.000 title claims abstract description 81
- 230000007797 corrosion Effects 0.000 title claims abstract description 79
- 239000011165 3D composite Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000008569 process Effects 0.000 title claims abstract description 29
- 229920000642 polymer Polymers 0.000 claims abstract description 104
- 239000011248 coating agent Substances 0.000 claims abstract description 46
- 238000000576 coating method Methods 0.000 claims abstract description 46
- 238000001035 drying Methods 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000006243 chemical reaction Methods 0.000 claims abstract description 32
- 230000003075 superhydrophobic effect Effects 0.000 claims abstract description 24
- 102000004169 proteins and genes Human genes 0.000 claims abstract description 21
- 108090000623 proteins and genes Proteins 0.000 claims abstract description 21
- 239000000853 adhesive Substances 0.000 claims abstract description 20
- 230000001070 adhesive effect Effects 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 20
- 239000008367 deionised water Substances 0.000 claims abstract description 18
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 238000005406 washing Methods 0.000 claims abstract description 18
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 12
- YZYKBQUWMPUVEN-UHFFFAOYSA-N zafuleptine Chemical compound OC(=O)CCCCCC(C(C)C)NCC1=CC=C(F)C=C1 YZYKBQUWMPUVEN-UHFFFAOYSA-N 0.000 claims abstract description 12
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 11
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 11
- 238000005238 degreasing Methods 0.000 claims abstract description 9
- 238000005498 polishing Methods 0.000 claims abstract description 9
- 238000004070 electrodeposition Methods 0.000 claims abstract description 8
- 229920002873 Polyethylenimine Polymers 0.000 claims description 52
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 35
- 229920000767 polyaniline Polymers 0.000 claims description 29
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 24
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 18
- DZAUWHJDUNRCTF-UHFFFAOYSA-N 3-(3,4-dihydroxyphenyl)propanoic acid Chemical compound OC(=O)CCC1=CC=C(O)C(O)=C1 DZAUWHJDUNRCTF-UHFFFAOYSA-N 0.000 claims description 18
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 18
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 15
- 238000002390 rotary evaporation Methods 0.000 claims description 14
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 11
- CTENFNNZBMHDDG-UHFFFAOYSA-N Dopamine hydrochloride Chemical compound Cl.NCCC1=CC=C(O)C(O)=C1 CTENFNNZBMHDDG-UHFFFAOYSA-N 0.000 claims description 10
- 150000001718 carbodiimides Chemical class 0.000 claims description 10
- 235000021355 Stearic acid Nutrition 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 229960001149 dopamine hydrochloride Drugs 0.000 claims description 9
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 9
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 9
- 235000010265 sodium sulphite Nutrition 0.000 claims description 9
- 239000008117 stearic acid Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 8
- QQZMWMKOWKGPQY-UHFFFAOYSA-N cerium(3+);trinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O QQZMWMKOWKGPQY-UHFFFAOYSA-N 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- KEMQGTRYUADPNZ-UHFFFAOYSA-N heptadecanoic acid Chemical compound CCCCCCCCCCCCCCCCC(O)=O KEMQGTRYUADPNZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000012074 organic phase Substances 0.000 claims description 7
- 238000001556 precipitation Methods 0.000 claims description 7
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 6
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 claims description 6
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 5
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 5
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 5
- SECPZKHBENQXJG-UHFFFAOYSA-N cis-palmitoleic acid Natural products CCCCCCC=CCCCCCCCC(O)=O SECPZKHBENQXJG-UHFFFAOYSA-N 0.000 claims description 5
- ZQPPMHVWECSIRJ-MDZDMXLPSA-N elaidic acid Chemical compound CCCCCCCC\C=C\CCCCCCCC(O)=O ZQPPMHVWECSIRJ-MDZDMXLPSA-N 0.000 claims description 5
- 235000021313 oleic acid Nutrition 0.000 claims description 5
- SRPWOOOHEPICQU-UHFFFAOYSA-N trimellitic anhydride Chemical compound OC(=O)C1=CC=C2C(=O)OC(=O)C2=C1 SRPWOOOHEPICQU-UHFFFAOYSA-N 0.000 claims description 5
- 229960002317 succinimide Drugs 0.000 claims description 4
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000008363 phosphate buffer Substances 0.000 claims description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 10
- MHUWZNTUIIFHAS-CLFAGFIQSA-N dioleoyl phosphatidic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(COP(O)(O)=O)OC(=O)CCCCCCC\C=C/CCCCCCCC MHUWZNTUIIFHAS-CLFAGFIQSA-N 0.000 description 10
- 235000019441 ethanol Nutrition 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 8
- 244000137852 Petrea volubilis Species 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000001027 hydrothermal synthesis Methods 0.000 description 6
- 229910021645 metal ion Inorganic materials 0.000 description 6
- 238000009210 therapy by ultrasound Methods 0.000 description 6
- AHMIDUVKSGCHAU-UHFFFAOYSA-N Dopaquinone Natural products OC(=O)C(N)CC1=CC(=O)C(=O)C=C1 AHMIDUVKSGCHAU-UHFFFAOYSA-N 0.000 description 5
- AHMIDUVKSGCHAU-LURJTMIESA-N L-dopaquinone Chemical compound [O-]C(=O)[C@@H]([NH3+])CC1=CC(=O)C(=O)C=C1 AHMIDUVKSGCHAU-LURJTMIESA-N 0.000 description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 5
- 239000007853 buffer solution Substances 0.000 description 5
- 229910000420 cerium oxide Inorganic materials 0.000 description 5
- BTVVNGIPFPKDHO-UHFFFAOYSA-K cerium(3+);octadecanoate Chemical compound [Ce+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O BTVVNGIPFPKDHO-UHFFFAOYSA-K 0.000 description 5
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 5
- 229920000180 alkyd Polymers 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 4
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 4
- 229960001545 hydrotalcite Drugs 0.000 description 4
- 229910001701 hydrotalcite Inorganic materials 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000536 complexating effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- WTDRDQBEARUVNC-UHFFFAOYSA-N L-Dopa Natural products OC(=O)C(N)CC1=CC=C(O)C(O)=C1 WTDRDQBEARUVNC-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229960004502 levodopa Drugs 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- BTURAGWYSMTVOW-UHFFFAOYSA-M sodium dodecanoate Chemical compound [Na+].CCCCCCCCCCCC([O-])=O BTURAGWYSMTVOW-UHFFFAOYSA-M 0.000 description 2
- 229940082004 sodium laurate Drugs 0.000 description 2
- UTPYTEWRMXITIN-YDWXAUTNSA-N 1-methyl-3-[(e)-[(3e)-3-(methylcarbamothioylhydrazinylidene)butan-2-ylidene]amino]thiourea Chemical compound CNC(=S)N\N=C(/C)\C(\C)=N\NC(=S)NC UTPYTEWRMXITIN-YDWXAUTNSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 241000237536 Mytilus edulis Species 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000020638 mussel Nutrition 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/42—Pretreatment of metallic surfaces to be electroplated of light metals
- C25D5/44—Aluminium
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D9/00—Electrolytic coating other than with metals
- C25D9/02—Electrolytic coating other than with metals with organic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/20—Metallic substrate based on light metals
- B05D2202/25—Metallic substrate based on light metals based on Al
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Metallurgy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of surface corrosion resistant processes, and discloses a surface corrosion resistant process of a three-dimensional composite aluminum plate; the method comprises the following steps: polishing and degreasing the surface of the three-dimensional composite aluminum plate for later use; adding a pretreated aluminum plate, zinc acetate dihydrate, ammonia water and deionized water into a reaction kettle, adjusting the pH to 10.5-11, heating to 60-65 ℃ for reacting for 2-2.5h, washing, drying, immersing into an electrolyte solution for electrochemical deposition, washing, and drying to obtain the super-hydrophobic aluminum plate; adding the mussel-like adhesive protein polymer into the water-based resin, uniformly stirring, and adding a drier to obtain the corrosion-resistant coating; and (3) coating the corrosion-resistant coating on the surface of the super-hydrophobic aluminum plate, and drying to obtain the corrosion-resistant three-dimensional composite aluminum plate.
Description
Technical Field
The invention relates to the technical field of surface corrosion-resistant processes, in particular to a surface corrosion-resistant process of a three-dimensional composite aluminum plate.
Background
Along with the continuous development of science and technology, material science is increasingly prosperous, and metals and alloys thereof are also increasingly widely applied in various fields, and particularly, aluminum and aluminum alloys are taken as examples, and the aluminum and aluminum alloys are widely applied to the fields of ship manufacturing, metal building materials, aerospace and the like due to the advantages of light material, high strength, easy acquisition and the like. However, such metallic materials have the disadvantage of being susceptible to corrosion, which tends to cause safety problems and economic losses inadvertently.
Therefore, the surface corrosion-resistant process of the three-dimensional composite aluminum plate has important significance.
Disclosure of Invention
The invention aims to provide a surface corrosion-resistant process of a three-dimensional composite aluminum plate, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
a surface corrosion-resistant process of a three-dimensional composite aluminum plate comprises the following steps:
s1: polishing and degreasing the surface of the three-dimensional composite aluminum plate for later use;
s2: adding a pretreated aluminum plate, zinc acetate dihydrate, ammonia water and deionized water into a reaction kettle, adjusting the pH to 10.5-11, heating to 60-65 ℃ for reacting for 2-2.5h, washing, drying, immersing into an electrolyte solution for electrochemical deposition, washing, and drying to obtain the super-hydrophobic aluminum plate;
s3: adding the mussel-like adhesive protein polymer into the water-based resin, uniformly stirring, and adding a drier to obtain the corrosion-resistant coating; and (3) coating the corrosion-resistant coating on the surface of the super-hydrophobic aluminum plate, and drying to obtain the corrosion-resistant three-dimensional composite aluminum plate.
Further, the mussel-like adhesive protein polymer is a mixture of polyaniline, polyaniline-polysuccinimide polymer and polyaniline-polyethyleneimine polymer; the polyaniline: polyaniline-polysuccinimide polymer: the mass ratio of polyaniline-polyethyleneimine polymer is 1:1:1.
Further, the preparation method of the polyaniline-polysuccinimide polymer comprises the following steps:
adding polysuccinimide and ethanolamine into N, N-dimethylformamide, and reacting for 4-4.5h at normal temperature; adding sodium sulfite and dopamine hydrochloride, heating to 90-95 ℃ to react for 4-4.5 hours, standing for precipitation, filtering and drying to obtain polysuccinimide polymer; and ultrasonically dispersing the polysuccinimide polymer in polyaniline to obtain the polyaniline-polysuccinimide polymer.
Further, the polysuccinimide polymer comprises, by mass, 90-100 parts of polysuccinimide, 10-20 parts of ethanolamine, 0.1-0.2 part of sodium sulfite and 7-8 parts of dopamine hydrochloride; the poly (succinimide) polymer in the polyaniline-poly (succinimide) polymer accounts for 2-3wt%.
Further, the preparation method of the polyaniline-polyethyleneimine polymer comprises the following steps:
adding polyethylenimine into a phosphate buffer, adjusting pH, adding 3- (3, 4-dihydroxyphenyl) propionic acid and carbodiimide, and reacting for 2-2.5h at normal temperature; extracting, drying an organic phase, performing rotary evaporation, recrystallizing and performing vacuum rotary evaporation to obtain a polyethyleneimine polymer; and (3) ultrasonically dispersing the polyethyleneimine polymer in polyaniline to obtain the polyaniline-polyethyleneimine polymer.
Further, the components of the polyethyleneimine polymer account for 100 parts by weight of polyethyleneimine, 50-60 parts by weight of 3- (3, 4-dihydroxyphenyl) propionic acid and 90-100 parts by weight of carbodiimide; the weight ratio of the polyethyleneimine polymer in the polyaniline-polyethyleneimine polymer is 2-3 percent; the pH is adjusted to 5.5, and the pH is maintained to 5.5 in the normal temperature reaction process.
Further, the preparation method of the aqueous resin comprises the following steps:
uniformly stirring trimethylolpropane, cis-9-octadecenoic acid and lithium hydroxide, and heating to 240-245 ℃ under nitrogen atmosphere for reaction for 1-1.5h; cooling to 180-185 ℃, and adding trimellitic anhydride to react for 1-1.5h; cooling to 130-135 ℃, adding triethylamine and glycidyl methacrylate for reaction for 1-1.5h; cooling to 25 ℃, adding ethylene glycol butyl ether, triethylamine and deionized water, and stirring uniformly to obtain the water-based resin.
Further, the water-based resin comprises, by mass, 50-60 parts of trimethylolpropane, 40-50 parts of cis-9-octadecenoic acid, 0.2 part of lithium hydroxide, 10-20 parts of trimellitic anhydride, 8-9 parts of triethylamine, 2-3 parts of glycidyl methacrylate and 30-40 parts of ethylene glycol butyl ether.
Further, the concentration of the zinc acetate dihydrate is 10mmol/L; the concentration of the ammonia water is 0.3-0.5mol/L; the electrolyte solution is ethanol solution of cerium nitrate hexahydrate and stearic acid; wherein each 100mL of ethanol contains 2.0-2.5g of cerium nitrate hexahydrate and 2.85-3g of stearic acid.
Further, the corrosion-resistant coating comprises, by mass, 0.1-0.5 part of mussel-like adhesive protein polymer, 100 parts of aqueous resin and 1-2 parts of drier.
Further, the drier is Octa-Soligen421; the coating thickness of the corrosion-resistant coating is 50-60 mu m.
Further, the stearic acid is heptadecanoic acid.
Further, the three-dimensional composite aluminum plate is an aluminum core composite honeycomb plate, and is divided into three layers, wherein an upper layer and a lower layer are aluminum plates with smooth surfaces, and a middle layer is a honeycomb aluminum plate; has the characteristics of firmness, portability and easy processing.
Compared with the prior art, the invention has the following beneficial effects:
firstly, preparing a layer of uniformly distributed micron-sized rod-shaped structure hydrotalcite film on the surface of an aluminum plate by using zinc acetate dihydrate through a hydrothermal synthesis method to serve as an aluminum foil coating protection structure, then preparing electrolyte solution by using cerium nitrate hexahydrate and stearic acid according to a proportion, and depositing a layer of low-surface-energy cerium stearate on the hydrotalcite film through an electrochemical method, wherein the deposited cerium stearate is not only present on the surface, but also exists in a large amount in the micron-sized rod-shaped structure due to the electric conduction performance of the hydrotalcite film; on one hand, the micron-sized rod-shaped hydrotalcite film can protect cerium stearate deposited on the surface, maintain the low surface energy of the surface and improve the superhydrophobic performance of the aluminum plate; on the other hand, cerium stearate can provide a second corrosion-resistant protective barrier for the aluminum sheet; the mutual synergistic effect greatly enhances the durability and corrosion resistance of the aluminum foil, and provides a foundation for further coating corrosion-resistant paint to strengthen the corrosion resistance.
According to the characteristic that positively charged mussel protein can be adsorbed on the positively charged metal surface, two mussel-like adhesive protein polymers (polysuccinimide polymer and polyethylenimine polymer) are prepared; amino in the dopamine hydrochloride structure can be subjected to continuous nitrogen decomposition reaction with five-membered heterocycle in the polysuccinimide molecular structure, and DOPA structural groups are successfully introduced into the polymer to prepare the polysuccinimide polymer; DOPA group has certain complexing action and can carry out complexing reaction with metal ions to form a hydrophobic complex film, so that excellent anti-corrosion performance is provided for the aluminum plate, and the DOPA group can be used as a corrosion inhibitor to greatly prolong the durability of the anti-corrosion performance; DOPA is introduced into a polyethyleneimine structure through a chemical synthesis method to prepare a polyethyleneimine polymer; on one hand, DOPA groups in the structure have enhanced complexing ability with metal ions after being oxidized into DOPA quinone to form a compact complex film, and the process is synchronously carried out in the process of corroding the metal ions, so that the produced complex film can fill and repair microscopic damage parts of the corrosion-resistant coating even if the corrosion defect positions on the surface of an aluminum plate are filled, and the channels of the corrosion-resistant coating penetrated by corrosive media are blocked, so that the corrosion resistance is greatly improved; on the other hand, the rigid structure in the polysuccinimide polymer structure and the soft segment in the polyethyleneimine polymer structure further improve the binding force between the corrosion-resistant coating and metal and the mechanical property.
The polyaniline is selected as a matrix for providing corrosion resistance, and has the characteristics of good environmental stability, corrosion resistance, simple preparation and easily obtained raw materials; however, in the practical application process, the water-based paint is required to be prepared, so that the rigidity of a molecular chain skeleton is high, and the intermolecular acting force is high, so that the water-based paint is not easy to disperse in water-based resin to prepare the water-based paint; according to the invention, the polyaniline is modified by the prepared two mussel-like adhesive protein polymers, so that the particle size of the polymer is greatly reduced, the agglomeration phenomenon is reduced, the dispersion performance and the processing performance of the polyaniline are enhanced, and the corrosion resistance of the coating is further enhanced.
According to the invention, glycidyl methacrylate modified water-based alkyd resin is selected as a coating matrix, more C=C double bond structures are introduced into the resin, and oxidation crosslinking points are increased, so that the crosslinking density of the corrosion-resistant coating is increased in the oxidation film forming process, the compactness of the coating is greatly improved, and the binding force with an aluminum plate is greatly improved; meanwhile, the added drier contains manganese and zirconium metal elements, and DOPA groups can be complexed with the metal elements in the drier in the process of producing dopaquinone by oxidation; the DOPA group is oxidized to produce the hydrogen bond effect of the DOPA quinone and the polyaniline surface, so that the DOPA group gradually disappears and gradually desorbs, when a corrosive medium contacts with the metal surface to corrode to produce a small amount of metal ions, the DOPA quinone can form a complex film with the metal ions to inhibit the metal corrosion, after the drier is introduced, the metal ions provided by the DOPA group can directly react after being oxidized into the DOPA quinone, so that the metal corrosion is reduced to a certain extent, the corrosion-resistant life of the metal is prolonged, and the durability is improved.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following examples, polysuccinimide specifications: molecular weight 8000-10000; polyethylene imine specification: an average molecular weight of 10000; polyaniline CAS:5612-44-2 from Shanghai Meilin Biochemical technologies Co., ltd; carbodiimide CAS:1892-57-5; heptadecanoic acid CAS:506-12-7, available from Shanghai microphone Biochemical technologies Co., ltd; the rest raw materials are purchased in the market;
in an embodiment, the electrolyte solution is an ethanol solution of cerium nitrate hexahydrate and stearic acid; wherein, each 100mL of ethanol contains 2.0g of cerium nitrate hexahydrate and 2.85g of stearic acid;
the preparation method of the aqueous resin comprises the following steps:
50g of trimethylolpropane, 40g of cis-9-octadecenoic acid and 0.2g of lithium hydroxide are uniformly stirred, and are heated to 240 ℃ for reaction for 1h in a nitrogen atmosphere; cooling to 180 ℃, and adding 10g of trimellitic anhydride to react for 1h; cooling to 130 ℃, adding 0.2g of triethylamine and 2g of glycidyl methacrylate for reaction for 1h; cooling to 25 ℃, adding 30g of ethylene glycol butyl ether, 7.8g of triethylamine and 100g of deionized water, and uniformly stirring to obtain the water-based resin.
Example 1: a surface corrosion-resistant process for a three-dimensional composite aluminum plate comprises the following steps: s1: polishing the surface of a three-dimensional composite aluminum plate by using 600-mesh, 800-mesh, 1000-mesh and 1200-mesh sand paper, sequentially carrying out ultrasonic treatment in acetone, ethanol and deionized water for 10min to carry out degreasing pretreatment, and drying for later use;
s2: adding a pretreated aluminum plate, 10mmol/L zinc acetate dihydrate, 0.3mol/L ammonia water and deionized water into a reaction kettle, adjusting the pH value to 10.5, heating to 60 ℃ for reaction for 2 hours, washing, immersing the dried aluminum plate into an electrolyte solution, taking a common aluminum plate as an anode, taking the aluminum plate as a cathode after hydrothermal reaction, carrying out electrochemical deposition for 30 minutes at the constant voltage of 30V and the electrode distance of 2cm at the temperature of 40 ℃, washing, and drying at the temperature of 60 ℃ for 4 hours to obtain a super-hydrophobic aluminum plate;
s3: 100g of polysuccinimide and 10g of ethanolamine are added into 100mLN, N-dimethylformamide to react for 4 hours at normal temperature; adding 0.1g of sodium sulfite and 7g of dopamine hydrochloride, heating to 90 ℃ for reaction for 4 hours, standing for precipitation, filtering and drying to obtain a polysuccinimide polymer; ultrasonically dispersing 2g of polysuccinimide polymer in 100g of polyaniline to obtain polyaniline-polysuccinimide polymer;
s4: 100g of polyethyleneimine is added into 100mL of phosphoric acid buffer solution, the pH is adjusted to 5.5, 50g of 3- (3, 4-dihydroxyphenyl) propionic acid and 90g of carbodiimide are added, and the reaction is carried out for 2 hours at normal temperature; extracting, drying an organic phase, performing rotary evaporation, recrystallizing and performing vacuum rotary evaporation to obtain a polyethyleneimine polymer; dispersing 2g of polyethyleneimine polymer in 100g of polyaniline by ultrasonic to obtain polyaniline-polyethyleneimine polymer;
s5: uniformly stirring 5g of polyaniline, 5g of polyaniline-polysuccinimide polymer and 5g of polyaniline-polyethyleneimine polymer to obtain a mussel-like adhesive protein polymer; adding 0.1g of mussel-like adhesive protein polymer into 100mL of water-based resin, uniformly stirring, and adding 1g of octa-Soligen421 drier to obtain a corrosion-resistant coating; and (3) coating the corrosion-resistant coating on the surface of the super-hydrophobic aluminum plate, wherein the coating thickness is 50 mu m, and drying to obtain the corrosion-resistant three-dimensional composite aluminum plate.
Example 2: a surface corrosion-resistant process for a three-dimensional composite aluminum plate comprises the following steps: s1: polishing the surface of a three-dimensional composite aluminum plate by using 600-mesh, 800-mesh, 1000-mesh and 1200-mesh sand paper, sequentially carrying out ultrasonic treatment in acetone, ethanol and deionized water for 10min to carry out degreasing pretreatment, and drying for later use;
s2: adding a pretreated aluminum plate, 10mmol/L zinc acetate dihydrate, 0.3mol/L ammonia water and deionized water into a reaction kettle, adjusting the pH value to 10.5, heating to 60 ℃ for reaction for 2 hours, washing, immersing the dried aluminum plate into an electrolyte solution, taking a common aluminum plate as an anode, taking the aluminum plate as a cathode after hydrothermal reaction, carrying out electrochemical deposition for 30 minutes at the constant voltage of 30V and the electrode distance of 2cm at the temperature of 40 ℃, washing, and drying at the temperature of 60 ℃ for 4 hours to obtain a super-hydrophobic aluminum plate;
s3: 100g of polysuccinimide and 10g of ethanolamine are added into 100mLN, N-dimethylformamide to react for 4 hours at normal temperature; adding 0.1g of sodium sulfite and 8g of dopamine hydrochloride, heating to 90 ℃ for reaction for 4 hours, standing for precipitation, filtering and drying to obtain a polysuccinimide polymer; ultrasonically dispersing 2g of polysuccinimide polymer in 100g of polyaniline to obtain polyaniline-polysuccinimide polymer;
s4: adding 100g of polyethyleneimine into 100mL of phosphoric acid buffer solution, adjusting the pH to 5.5, adding 60g of 3- (3, 4-dihydroxyphenyl) propionic acid and 100g of carbodiimide, and reacting for 2 hours at normal temperature; extracting, drying an organic phase, performing rotary evaporation, recrystallizing and performing vacuum rotary evaporation to obtain a polyethyleneimine polymer; dispersing 2g of polyethyleneimine polymer in 100g of polyaniline by ultrasonic to obtain polyaniline-polyethyleneimine polymer;
s5: uniformly stirring 5g of polyaniline, 5g of polyaniline-polysuccinimide polymer and 5g of polyaniline-polyethyleneimine polymer to obtain a mussel-like adhesive protein polymer; adding 0.3g of mussel-like adhesive protein polymer into 100mL of water-based resin, uniformly stirring, and adding 1g of octa-Soligen421 drier to obtain a corrosion-resistant coating; and (3) coating the corrosion-resistant coating on the surface of the super-hydrophobic aluminum plate, wherein the coating thickness is 50 mu m, and drying to obtain the corrosion-resistant three-dimensional composite aluminum plate.
Example 3: a surface corrosion-resistant process for a three-dimensional composite aluminum plate comprises the following steps: s1: polishing the surface of a three-dimensional composite aluminum plate by using 600-mesh, 800-mesh, 1000-mesh and 1200-mesh sand paper, sequentially carrying out ultrasonic treatment in acetone, ethanol and deionized water for 10min to carry out degreasing pretreatment, and drying for later use;
s2: adding a pretreated aluminum plate, 10mmol/L zinc acetate dihydrate, 0.3mol/L ammonia water and deionized water into a reaction kettle, adjusting the pH value to 10.5, heating to 60 ℃ for reaction for 2 hours, washing, immersing the dried aluminum plate into an electrolyte solution, taking a common aluminum plate as an anode, taking the aluminum plate as a cathode after hydrothermal reaction, carrying out electrochemical deposition for 30 minutes at the constant voltage of 30V and the electrode distance of 2cm at the temperature of 40 ℃, washing, and drying at the temperature of 60 ℃ for 4 hours to obtain a super-hydrophobic aluminum plate;
s3: 100g of polysuccinimide and 10g of ethanolamine are added into 100mLN, N-dimethylformamide to react for 4 hours at normal temperature; adding 0.1g of sodium sulfite and 8g of dopamine hydrochloride, heating to 90 ℃ for reaction for 4 hours, standing for precipitation, filtering and drying to obtain a polysuccinimide polymer; ultrasonically dispersing 3g of polysuccinimide polymer in 100g of polyaniline to obtain polyaniline-polysuccinimide polymer;
s4: adding 100g of polyethyleneimine into 100mL of phosphoric acid buffer solution, adjusting the pH to 5.5, adding 60g of 3- (3, 4-dihydroxyphenyl) propionic acid and 100g of carbodiimide, and reacting for 2 hours at normal temperature; extracting, drying an organic phase, performing rotary evaporation, recrystallizing and performing vacuum rotary evaporation to obtain a polyethyleneimine polymer; ultrasonically dispersing 3g of polyethyleneimine polymer in 100g of polyaniline to obtain polyaniline-polyethyleneimine polymer;
s5: uniformly stirring 5g of polyaniline, 5g of polyaniline-polysuccinimide polymer and 5g of polyaniline-polyethyleneimine polymer to obtain a mussel-like adhesive protein polymer; adding 0.5g of mussel-like adhesive protein polymer into 100mL of water-based resin, uniformly stirring, and adding 1g of octa-Soligen421 drier to obtain a corrosion-resistant coating; and (3) coating the corrosion-resistant coating on the surface of the super-hydrophobic aluminum plate, wherein the coating thickness is 50 mu m, and drying to obtain the corrosion-resistant three-dimensional composite aluminum plate.
Comparative example 1: a surface corrosion-resistant process for a three-dimensional composite aluminum plate comprises the following steps: s1: polishing the surface of a three-dimensional composite aluminum plate by using 600-mesh, 800-mesh, 1000-mesh and 1200-mesh sand paper, sequentially carrying out ultrasonic treatment in acetone, ethanol and deionized water for 10min to carry out degreasing pretreatment, and drying for later use;
s2: adding a pretreated aluminum plate, 10mmol/L zinc acetate dihydrate, 0.3mol/L ammonia water and deionized water into a reaction kettle, adjusting the pH value to 10.5, heating to 60 ℃ for reaction for 2 hours, washing, immersing the dried aluminum plate into an electrolyte solution, taking a common aluminum plate as an anode, taking the aluminum plate as a cathode after hydrothermal reaction, carrying out electrochemical deposition for 30 minutes at the constant voltage of 30V and the electrode distance of 2cm at the temperature of 40 ℃, washing, and drying at the temperature of 60 ℃ for 4 hours to obtain a super-hydrophobic aluminum plate;
s3: 100g of polysuccinimide and 10g of ethanolamine are added into 100mLN, N-dimethylformamide to react for 4 hours at normal temperature; adding 0.1g of sodium sulfite and 7g of dopamine hydrochloride, heating to 90 ℃ for reaction for 4 hours, standing for precipitation, filtering and drying to obtain a polysuccinimide polymer; ultrasonically dispersing 2g of polysuccinimide polymer in 100g of polyaniline to obtain polyaniline-polysuccinimide polymer;
s4: 100g of polyethyleneimine is added into 100mL of phosphoric acid buffer solution, the pH is adjusted to 5.5, 50g of 3- (3, 4-dihydroxyphenyl) propionic acid and 90g of carbodiimide are added, and the reaction is carried out for 2 hours at normal temperature; extracting, drying an organic phase, performing rotary evaporation, recrystallizing and performing vacuum rotary evaporation to obtain a polyethyleneimine polymer; dispersing 2g of polyethyleneimine polymer in 100g of polyaniline by ultrasonic to obtain polyaniline-polyethyleneimine polymer;
s5: uniformly stirring 5g of polyaniline, 5g of polyaniline-polysuccinimide polymer and 5g of polyaniline-polyethyleneimine polymer to obtain a mussel-like adhesive protein polymer; adding 0.1g of mussel-like adhesive protein polymer into 100mL of alkyd resin, uniformly stirring, and adding 1g of octa-Soligen421 drier to obtain a corrosion-resistant coating; coating the corrosion-resistant coating on the surface of the super-hydrophobic aluminum plate, wherein the coating thickness is 50 mu m, and drying to obtain the corrosion-resistant three-dimensional composite aluminum plate;
wherein, alkyd resin CAS:63148-69-6, specification from Shenzhen Jiuvarious industries, inc.: the hydroxyl value is 8-11, and the viscosity is 5000-10000 mpa.s/25 ℃.
Comparative example 2: a surface corrosion-resistant process for a three-dimensional composite aluminum plate comprises the following steps: s1: polishing the surface of a three-dimensional composite aluminum plate by using 600-mesh, 800-mesh, 1000-mesh and 1200-mesh sand paper, sequentially carrying out ultrasonic treatment in acetone, ethanol and deionized water for 10min to carry out degreasing pretreatment, and drying for later use;
s2: adding a pretreated aluminum plate, 10mmol/L zinc acetate dihydrate, 0.3mol/L ammonia water and deionized water into a reaction kettle, adjusting the pH value to 10.5, heating to 60 ℃ for reaction for 2 hours, washing, immersing the dried aluminum plate into an electrolyte solution, taking a common aluminum plate as an anode, taking the aluminum plate as a cathode after hydrothermal reaction, carrying out electrochemical deposition for 30 minutes at the constant voltage of 30V and the electrode distance of 2cm at the temperature of 40 ℃, washing, and drying at the temperature of 60 ℃ for 4 hours to obtain a super-hydrophobic aluminum plate;
s3: and (3) placing the super-hydrophobic aluminum plate in a 0.05mol/L sodium laurate aqueous solution, placing the super-hydrophobic aluminum plate in a 50 ℃ oven for 4 hours, washing the super-hydrophobic aluminum plate with absolute ethyl alcohol, and drying the super-hydrophobic aluminum plate to obtain the corrosion-resistant three-dimensional composite aluminum plate.
Comparative example 3: a surface corrosion-resistant process for a three-dimensional composite aluminum plate comprises the following steps: s1: polishing the surface of a three-dimensional composite aluminum plate by using 600-mesh, 800-mesh, 1000-mesh and 1200-mesh sand paper, sequentially carrying out ultrasonic treatment in acetone, ethanol and deionized water for 10min to carry out degreasing pretreatment, and drying for later use;
s2: adding a pretreated aluminum plate, 10mmol/L zinc acetate dihydrate, 0.3mol/L ammonia water and deionized water into a reaction kettle, adjusting the pH to 10.5, heating to 60 ℃ for reaction for 2 hours, washing and drying to obtain a super-hydrophobic aluminum plate;
s3: 100g of polysuccinimide and 10g of ethanolamine are added into 100mLN, N-dimethylformamide to react for 4 hours at normal temperature; adding 0.1g of sodium sulfite and 7g of dopamine hydrochloride, heating to 90 ℃ for reaction for 4 hours, standing for precipitation, filtering and drying to obtain a polysuccinimide polymer; ultrasonically dispersing 2g of polysuccinimide polymer in 100g of polyaniline to obtain polyaniline-polysuccinimide polymer;
s4: 100g of polyethyleneimine is added into 100mL of phosphoric acid buffer solution, the pH is adjusted to 5.5, 50g of 3- (3, 4-dihydroxyphenyl) propionic acid and 90g of carbodiimide are added, and the reaction is carried out for 2 hours at normal temperature; extracting, drying an organic phase, performing rotary evaporation, recrystallizing and performing vacuum rotary evaporation to obtain a polyethyleneimine polymer; dispersing 2g of polyethyleneimine polymer in 100g of polyaniline by ultrasonic to obtain polyaniline-polyethyleneimine polymer;
s5: uniformly stirring 5g of polyaniline, 5g of polyaniline-polysuccinimide polymer, 5g of polyaniline-polyethyleneimine polymer and 100ml of 0.5g/L nano cerium oxide solution to obtain a mussel-like adhesive protein polymer; adding 0.1g of mussel-like adhesive protein polymer into 100mL of water-based resin, uniformly stirring, and adding 1g of octa-Soligen421 drier to obtain a corrosion-resistant coating; coating the corrosion-resistant coating on the surface of the super-hydrophobic aluminum plate, wherein the coating thickness is 50 mu m, and drying to obtain the corrosion-resistant three-dimensional composite aluminum plate;
wherein, the grain diameter of the nano cerium oxide is 30nm.
And (3) testing: corrosion resistance test: immersing the corrosion-resistant three-dimensional composite aluminum plate in sulfuric acid solution with pH value of 1 and sodium hydroxide solution with pH value of 14 for 60-180h at 25 ℃, and respectively detecting contact angles before and after immersion;
and (3) binding force test: the binding force was evaluated by tape-release experiments according to ATSM D3359-97; scribing scratches perpendicular to each other on the surface of the corrosion-resistant three-dimensional composite aluminum plate by using a hundred-gauge knife (QFH-HG 600), immersing in a 3.5wt% sodium chloride solution at 25 ℃ for 3 hours, cleaning the surface, adhering the adhesive tape on the surface, pressing for 120 seconds, removing the adhesive tape, and observing the falling state of the film layer by a microscope.
Data for performance test of aluminum plate
Conclusion: the aluminum sheets prepared by the surface corrosion resistant process used in examples 1-3 have excellent corrosion resistance. Comparative example 1 a corrosion resistant coating was prepared using a conventional commercial alkyd resin as a solvent instead of an aqueous resin; the double bond oxidation crosslinking point position is reduced, the drying performance is reduced, the crosslinking density of the coating is reduced, and the corrosion resistance and the binding force are reduced; comparative example 2, in which the super-hydrophobic aluminum plate is secondarily modified by using sodium laurate, the self-repairing capability is lacked, the corrosion resistance is short (several hours), and the corrosion resistance is reduced; the lack of DOPA structure results in reduced adhesion and reduced binding force; comparative example 3 the cerium stearate prepared in the superhydrophobic aluminum plate was replaced with nano cerium oxide, the nano cerium oxide was coated on the surface of the aluminum plate by blending with mussel-like adhesive protein polymer, and compared with example 1, the nano cerium oxide was low in dispersibility and could not be uniformly distributed on the surface of the aluminum plate, and meanwhile, the binding force with the aluminum plate was low and abrasion was easy in the use process, so that the corrosion resistance of the aluminum plate was reduced.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A surface corrosion-resistant process of a three-dimensional composite aluminum plate is characterized by comprising the following steps of: comprises the following steps:
s1: polishing and degreasing the surface of the three-dimensional composite aluminum plate for later use;
s2: adding a pretreated aluminum plate, zinc acetate dihydrate, ammonia water and deionized water into a reaction kettle, adjusting the pH to 10.5-11, heating to 60-65 ℃ for reacting for 2-2.5h, washing, drying, immersing into an electrolyte solution for electrochemical deposition, washing, and drying to obtain the super-hydrophobic aluminum plate;
s3: adding the mussel-like adhesive protein polymer into the water-based resin, uniformly stirring, and adding a drier to obtain the corrosion-resistant coating; coating the corrosion-resistant coating on the surface of the super-hydrophobic aluminum plate, and drying to obtain a corrosion-resistant three-dimensional composite aluminum plate;
the mussel-like adhesive protein polymer is polyaniline, polyaniline-polysuccinimide polymer and mixture of polyaniline-polyethyleneimine polymer; the polyaniline: polyaniline-polysuccinimide polymer: the mass ratio of polyaniline to polyethyleneimine polymer is 1:1:1;
the preparation method of the polyaniline-polysuccinimide polymer comprises the following steps:
adding polysuccinimide and ethanolamine into N, N-dimethylformamide, and reacting for 4-4.5h at normal temperature; adding sodium sulfite and dopamine hydrochloride, heating to 90-95 ℃ to react for 4-4.5 hours, standing for precipitation, filtering and drying to obtain polysuccinimide polymer; ultrasonically dispersing a polysuccinimide polymer in polyaniline to obtain a polyaniline-polysuccinimide polymer;
the preparation method of the polyaniline-polyethyleneimine polymer comprises the following steps:
adding polyethylenimine into a phosphate buffer, adjusting pH, adding 3- (3, 4-dihydroxyphenyl) propionic acid and carbodiimide, and reacting for 2-2.5h at normal temperature; extracting, drying an organic phase, performing rotary evaporation, recrystallizing and performing vacuum rotary evaporation to obtain a polyethyleneimine polymer; and (3) ultrasonically dispersing the polyethyleneimine polymer in polyaniline to obtain the polyaniline-polyethyleneimine polymer.
2. The process for corrosion resistance of the surface of a three-dimensional composite aluminum sheet according to claim 1, wherein: the polysuccinimide polymer comprises, by mass, 90-100 parts of polysuccinimide, 10-20 parts of ethanolamine, 0.1-0.2 part of sodium sulfite and 7-8 parts of dopamine hydrochloride; the poly (succinimide) polymer in the polyaniline-poly (succinimide) polymer accounts for 2-3wt%.
3. The process for corrosion resistance of the surface of a three-dimensional composite aluminum sheet according to claim 1, wherein: the weight ratio of each component of the polyethyleneimine polymer is 100 parts of polyethyleneimine, 50-60 parts of 3- (3, 4-dihydroxyphenyl) propionic acid and 90-100 parts of carbodiimide; the weight ratio of the polyethyleneimine polymer in the polyaniline-polyethyleneimine polymer is 2-3 percent; the pH is adjusted to 5.5, and the pH is maintained to 5.5 in the normal temperature reaction process.
4. The process for corrosion resistance of the surface of a three-dimensional composite aluminum sheet according to claim 1, wherein: the preparation method of the aqueous resin comprises the following steps:
uniformly stirring trimethylolpropane, cis-9-octadecenoic acid and lithium hydroxide, and heating to 240-245 ℃ under nitrogen atmosphere for reaction for 1-1.5h; cooling to 180-185 ℃, and adding trimellitic anhydride to react for 1-1.5h; cooling to 130-135 ℃, adding triethylamine and glycidyl methacrylate for reaction for 1-1.5h; cooling to 25 ℃, adding ethylene glycol butyl ether, triethylamine and deionized water, and stirring uniformly to obtain the water-based resin.
5. The process for corrosion resistance of a three-dimensional composite aluminum sheet according to claim 4, wherein: the water-based resin comprises, by mass, 50-60 parts of trimethylolpropane, 40-50 parts of cis-9-octadecenoic acid, 0.2 part of lithium hydroxide, 10-20 parts of trimellitic anhydride, 8-9 parts of triethylamine, 2-3 parts of glycidyl methacrylate and 30-40 parts of ethylene glycol butyl ether.
6. The process for corrosion resistance of the surface of a three-dimensional composite aluminum sheet according to claim 1, wherein: the concentration of the zinc acetate dihydrate is 10mmol/L; the concentration of the ammonia water is 0.3-0.5mol/L; the electrolyte solution is ethanol solution of cerium nitrate hexahydrate and stearic acid; wherein each 100mL of ethanol contains 2.0-2.5g of cerium nitrate hexahydrate and 2.85-3g of stearic acid; the stearic acid is heptadecanoic acid.
7. The process for corrosion resistance of the surface of a three-dimensional composite aluminum sheet according to claim 1, wherein: the corrosion-resistant coating comprises, by mass, 0.1-0.5 part of mussel-like adhesive protein polymer, 100 parts of aqueous resin and 1-2 parts of drier; the drier is Octa-Soligen421; the coating thickness of the corrosion-resistant coating is 50-60 mu m.
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