CN107057548A - A kind of anticorrosive coating of aluminum alloy materials and preparation method thereof and anti-corrosion method - Google Patents
A kind of anticorrosive coating of aluminum alloy materials and preparation method thereof and anti-corrosion method Download PDFInfo
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- CN107057548A CN107057548A CN201710367136.XA CN201710367136A CN107057548A CN 107057548 A CN107057548 A CN 107057548A CN 201710367136 A CN201710367136 A CN 201710367136A CN 107057548 A CN107057548 A CN 107057548A
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- anticorrosive coating
- aluminum alloy
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- 239000011248 coating agent Substances 0.000 title claims abstract description 54
- 238000000576 coating method Methods 0.000 title claims abstract description 54
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 49
- 239000000956 alloy Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005260 corrosion Methods 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title abstract description 10
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910000077 silane Inorganic materials 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002608 ionic liquid Substances 0.000 claims abstract description 18
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 18
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 17
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 17
- 229920002635 polyurethane Polymers 0.000 claims abstract description 11
- 239000004814 polyurethane Substances 0.000 claims abstract description 11
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 8
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 8
- -1 mercaptoethyl Chemical group 0.000 claims description 30
- 238000001035 drying Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 4
- DCQBZYNUSLHVJC-UHFFFAOYSA-N 3-triethoxysilylpropane-1-thiol Chemical compound CCO[Si](OCC)(OCC)CCCS DCQBZYNUSLHVJC-UHFFFAOYSA-N 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000002401 inhibitory effect Effects 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- AQLLBJAXUCIJSR-UHFFFAOYSA-N OC(=O)C[Na] Chemical compound OC(=O)C[Na] AQLLBJAXUCIJSR-UHFFFAOYSA-N 0.000 claims 1
- 239000006087 Silane Coupling Agent Substances 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 239000003973 paint Substances 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 206010001497 Agitation Diseases 0.000 description 11
- 238000013019 agitation Methods 0.000 description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- 229910021529 ammonia Inorganic materials 0.000 description 9
- 150000003839 salts Chemical class 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 8
- YRQLVXMJNBOEKF-UHFFFAOYSA-N 2-(3-methyl-2H-imidazol-1-yl)ethanethiol Chemical class SCCN1CN(C=C1)C YRQLVXMJNBOEKF-UHFFFAOYSA-N 0.000 description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 5
- 239000004327 boric acid Substances 0.000 description 5
- 230000031709 bromination Effects 0.000 description 5
- 238000005893 bromination reaction Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000012043 crude product Substances 0.000 description 4
- 230000006837 decompression Effects 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 238000010792 warming Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- MCTWTZJPVLRJOU-UHFFFAOYSA-N 1-methyl-1H-imidazole Chemical class CN1C=CN=C1 MCTWTZJPVLRJOU-UHFFFAOYSA-N 0.000 description 2
- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
- TVZRAEYQIKYCPH-UHFFFAOYSA-N 3-(trimethylsilyl)propane-1-sulfonic acid Chemical compound C[Si](C)(C)CCCS(O)(=O)=O TVZRAEYQIKYCPH-UHFFFAOYSA-N 0.000 description 2
- 229910001094 6061 aluminium alloy Inorganic materials 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 235000010210 aluminium Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 150000002460 imidazoles Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of anticorrosive coating of aluminum alloy materials and preparation method thereof and anti-corrosion method, wherein, the anticorrosive coating includes silane coupler, sodium carboxymethylcellulose, nano silicon, soluble polyurethane, polyacrylamide, water and the ionic liquid containing sulfydryl.The anticorrosive coating for the aluminum alloy materials that the present invention is provided, has the advantages that stability is good, anti-corrosion capability strong and strong with aluminum alloy surface adhesive force, and the anticorrosive coating of the present invention is water paint, environmental protection, free from environmental pollution.
Description
Technical field
The present invention relates to a kind of anticorrosive metal paint and anti-corrosion method, specifically, it is related to a kind of aluminum alloy materials
Anticorrosive coating and preparation method thereof and aluminum alloy materials anti-corrosion method.
Background technology
Aluminium alloy has the advantages that density is small, intensity is high, easy processing formability is good, thus is widely used.According to statistics, closely
Nian Lai, aluminium closes the annual growth of aluminium alloy consumption in the world and is up to more than 20%, and has the trend of sustainable growth.But
Different degrees of corrosion can occur for aluminium alloy use in various environment, particularly in wet environment, seawater, acid or alkali environment
In, the performance of aluminium alloy is on the one hand influenceed, causes potential safety hazard, on the other hand also result in a large amount of wastes.Therefore aluminium alloy production
Product after finalization of the manufacture, generally require to realize anticorrosion to its surface coating paint.Researcher in this field also to for
The anticorrosive coating of aluminium alloy protection has carried out the research of wide hair.
But, the problem of existing anticorrosive coating for aluminum alloy materials also has many, first, anticorrosive coating
It is not high with aluminum alloy materials adhesion, easily cause and come off, cause to lose corrosion-resisting function；Second, existing anticorrosive coating
Corrosion Protection is not high and stability is poor, can not long-term storage；3rd, largely organic solvent is used in existing coating, into
This is higher, while can be caused harm to environment, health, preparation process and can also produce the substantial amounts of three wastes using process.
The content of the invention
In view of existing anticorrosive coating also has above mentioned problem, proposing the present invention, there is provided a kind of the anti-of aluminum alloy materials
The anti-corrosion method of etching ground and preparation method thereof and aluminum alloy materials.
In order to realize the purpose of the present invention, in a first aspect, the present invention provides a kind of anticorrosive coating of aluminum alloy materials, its
In, the anticorrosive coating includes silane coupler, sodium carboxymethylcellulose, nano silicon, soluble polyurethane, polypropylene
Acid amides, water and the ionic liquid containing sulfydryl.
In the present invention, it is preferred in the case of, relative to the ionic liquid containing sulfydryl of 1 parts by weight, silane coupler
Consumption is 0.3~0.8 parts by weight, and the consumption of sodium carboxymethylcellulose is 0.5~1 parts by weight, and the consumption of nano silicon is
0.5~1 parts by weight, the consumption of soluble polyurethane are 2~5 parts by weight, and the consumption of polyacrylamide is 1~2 parts by weight, water
Consumption is 20~50 parts by weight.In the case of further preferably, relative to the ionic liquid containing sulfydryl of 1 parts by weight, silane is even
The consumption for joining agent is 0.3~0.5 parts by weight, and the consumption of sodium carboxymethylcellulose is 0.5~0.8 parts by weight, nano silicon
Consumption be that 0.5~1 parts by weight, the consumption of soluble polyurethane are 3~5 parts by weight, the consumption of polyacrylamide is 1~1.5
Parts by weight, the consumption of water is 25~50 parts by weight；In the case of more preferably, relative to the ionic liquid containing sulfydryl of 1 parts by weight,
The consumption of silane coupler is 0.4 parts by weight, and the consumption of sodium carboxymethylcellulose is 0.8 parts by weight, the use of nano silicon
Amount is that 1 parts by weight, the consumption of soluble polyurethane are 4 parts by weight, and the consumption of polyacrylamide is 1.2 parts by weight, the consumption of water
For 45 parts by weight.
In the present invention, inventor has found that the ionic liquid with sulfydryl can strengthen knot of the coating to aluminum alloy materials
Close, and can also play a part of homogenizing coating so that under coating uniform and smooth, preferable case, it is described containing sulfydryl from
Sub- liquid is 1- methyl -3- (mercaptoethyl) tetrafluoroborates or 1- methyl -3- (mercaptopropyi) tetrafluoroborate.
In the present invention, such as the silane coupler is it is also preferred that the silane coupler with sulfydryl, described silane coupled
Agent is γ-Mercaptopropyltriethoxysilane or γ mercaptopropyitrimethoxy silane.
The present invention also provides a kind of method for the anticorrosive coating for preparing above-mentioned aluminum alloy materials, wherein, including first by silicon
Alkane coupling agent, sodium carboxymethylcellulose, nano silicon, soluble polyurethane, polyacrylamide and containing sulfydryl from
Sub- liquid, the well mixed anticorrosive coating for obtaining aluminum alloy materials.In the present invention, the mode of mixing can use this area
Conventional use of method, such as mechanical agitation, mixing speed can be 500~1000 turns/min.
Present invention additionally comprises a kind of aluminum alloy materials method of inhibiting corrosion, this method include first by above-mentioned anticorrosive coating or
Anticorrosive coating prepared by the above method is coated in the surface of aluminum alloy materials, and then high temperature is dried.
In the present invention under preferable case, the condition of high temperature drying includes：90~110 DEG C of temperature, drying time is 6~8
Hour；Anticorrosive coating is 0.1~1 micron in the coating layer thickness of aluminum alloy material surface formation after high temperature drying.
In the present invention, raw material of the invention can be prepared or be commercially available by prior art.For example it is described water-soluble
Property polyurethane can be polymerize by conventional multicomponent isocyanate class monomer and polyhydroxy-alcohol, as commercially available product, for example
PU-100, PU-200, PU-300, PU-400, PU-500 type waterborne polyurethane resin of Tianzhang City's Xingtai Fine Chemical Works disperse
Body (solid content 30~40%).
The anticorrosive coating for the aluminum alloy materials that the present invention is provided has advantages below：
1) the of the invention anticorrosive coating that is used for is strong with aluminum alloy surface adhesive force, can closely with aluminium alloy table
Face is fitted, and will not fall off, Corrosion Protection is more preferable.
2) anticorrosive coating stability of the invention is good, and preserving more than 6 months still has good performance.
3) environmental protection of anticorrosive coating of the invention, free from environmental pollution.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.But these embodiments be only limitted to explanation the present invention without
It is the further restriction to protection scope of the present invention.
Preparation example 1
Under nitrogen protection, in three-necked flask are dried, 41g N- methylimidazoles and 100ml acetonitriles are added, 60 DEG C are warming up to,
84g 2- bromine ethyl mercaptans are added dropwise, insulated and stirred is reacted 14 hours, monitoring reaction is finished, and is concentrated under reduced pressure to give faint yellow viscous fluid
Body, is then washed three times with acetone, is concentrated under reduced pressure and is dried to obtain bromination 1- methyl -3- (mercaptoethyl) imidazoles；By bromination 1-
(mercaptoethyl) -3- methylimidazoles, 60g sodium fluoborates and 50ml acetone are added into another three-necked flask, are warming up to 50 DEG C,
Keeping temperature stirring reaction 12 hours, suction filtration, filtrate decompression is concentrated to give 1- methyl -3- (mercaptoethyl) tetrafluoroborate
Crude product, dichloromethane is dissolved in by crude product, and filtering, filtrate decompression is concentrated to give weak yellow liquid 1- methyl -3- (mercaptoethyl) miaow
Azoles tetrafluoroborate 96.8g, yield 84.2%.1HNMR(400MHz,D2O, DSS external standard), δ 8.72 (s, 1H)；7.45(s,1H)；
7.37(s,1H)；4.25~4.31 (t, 2H)；3.82(s,3H)；2.88~2.92 (t, 2H).
Preparation example 2
Under nitrogen protection, in three-necked flask are dried, 41g N- methylimidazoles and 100ml acetonitriles are added, 60 DEG C are warming up to,
85g 3- bromine propanethiols are added dropwise, insulated and stirred is reacted 18 hours, monitoring reaction is finished, and is concentrated under reduced pressure to give faint yellow viscous fluid
Body, is then washed three times with acetone, is concentrated under reduced pressure to give bromination 1- methyl -3- (mercaptoethyl) imidazoles；By bromination 1- (sulfydryl second
Base) -3- methylimidazoles, 60g sodium fluoborates and 50ml acetone added into another three-necked flask, is warming up to 50 DEG C, keeps temperature
Stirring reaction 12 hours are spent, suction filtration, filtrate decompression is concentrated to give 1- methyl -3- (mercaptoethyl) tetrafluoroborate crude product,
Crude product is dissolved in dichloromethane, filtered, filtrate decompression is concentrated to give weak yellow liquid 1- methyl -3- (mercaptopropyi) imidazoles tetrafluoro
Borate 99.7g, yield 81.7%.1HNMR(400MHz,D2O, DSS external standard), δ 8.74 (s, 1H)；7.45(s,1H)；7.35
(s,1H)；4.21~4.28 (t, 2H)；3.80(s,3H)；2.67~2.73 (t, 2H)；2.38~2.44 (m, 2H).
Embodiment 1
By 0.4Kg silane couplers, 0.8Kg sodium carboxymethylcelluloses, 1Kg nano silicons, 4Kg water-soluble poly ammonia
Ester, 1.2Kg polyacrylamides and 1Kg contain ionic liquid (1- methyl -3- (mercaptoethyl) imidazoles tetrafluoro boric acid of sulfydryl
Salt) add in 45Kg water, the well mixed anticorrosive coating A1 for obtaining aluminum alloy materials of 1000 turns/min mechanical agitations.
Embodiment 2
By 0.3Kg silane couplers, 0.6Kg sodium carboxymethylcelluloses, 1Kg nano silicons, 3Kg water-soluble poly ammonia
Ester, 1Kg polyacrylamides and 1Kg contain the ionic liquid (1- methyl -3- (mercaptoethyl) tetrafluoroborate) of sulfydryl
Add in 50Kg water, the well mixed anticorrosive coating A2 for obtaining aluminum alloy materials of 1000 turns/min mechanical agitations.
Embodiment 3
By 0.5Kg silane couplers, 0.5Kg sodium carboxymethylcelluloses, 0.5Kg nano silicons, 5Kg water-soluble poly ammonia
Ester, 1.5Kg polyacrylamides and 1Kg contain ionic liquid (1- methyl -3- (mercaptopropyi) imidazoles tetrafluoro boric acid of sulfydryl
Salt) add in 25Kg water, the well mixed anticorrosive coating A3 for obtaining aluminum alloy materials of 1000 turns/min mechanical agitations.
Embodiment 4
By 0.6Kg silane couplers, 0.5Kg sodium carboxymethylcelluloses, 0.5Kg nano silicons, 2Kg water-soluble poly ammonia
Ester, 1Kg polyacrylamides and 0.5Kg contain ionic liquid (1- methyl -3- (mercaptoethyl) imidazoles tetrafluoro boric acid of sulfydryl
Salt) add in 45Kg water, the well mixed anticorrosive coating A4 for obtaining aluminum alloy materials of 1000 turns/min mechanical agitations.
Embodiment 5
By 0.4Kg silane couplers, 0.8Kg sodium carboxymethylcelluloses, 1Kg nano silicons, 4Kg water-soluble poly ammonia
Ester, 1.2Kg polyacrylamides and 0.2Kg contain ionic liquid (1- methyl -3- (mercaptoethyl) imidazoles tetrafluoro boric acid of sulfydryl
Salt) add in 45Kg water, the well mixed anticorrosive coating A5 for obtaining aluminum alloy materials of 1000 turns/min mechanical agitations.
Embodiment 6
By 0.4Kg silane couplers, 0.2Kg sodium carboxymethylcelluloses, 1Kg nano silicons, 4Kg water-soluble poly ammonia
Ester, 1.2Kg polyacrylamides and 0.2Kg contain ionic liquid (1- methyl -3- (mercaptoethyl) imidazoles tetrafluoro boric acid of sulfydryl
Salt) add in 45Kg water, the well mixed anticorrosive coating A6 for obtaining aluminum alloy materials of 1000 turns/min mechanical agitations.
Embodiment 7
By 0.4Kg silane couplers, 0.8Kg sodium carboxymethylcelluloses, 1Kg nano silicons, 4Kg water-soluble poly ammonia
The ionic liquid (bromination 1- methyl -3- (mercaptoethyl) imidazole salts) that ester, 1.2Kg polyacrylamides and 1Kg contain sulfydryl adds
Enter in 45Kg water, the well mixed anticorrosive coating A7 for obtaining aluminum alloy materials of 1000 turns/min mechanical agitations.
Comparative example 1
By 0.4Kg silane couplers, 0.8Kg sodium carboxymethylcelluloses, 1Kg nano silicons, 4Kg water-soluble poly ammonia
Ester, 1.2Kg polyacrylamides are added in 45Kg water, the well mixed anti-corrosion for obtaining aluminum alloy materials of 1000 turns/min mechanical agitations
Lose coating D1.
Comparative example 2
By 0.4Kg silane couplers, 0.8Kg sodium carboxymethylcelluloses, 1Kg nano silicons, 4Kg water-soluble poly ammonia
Ester, 1.2Kg polyacrylamides and 1Kg ionic liquids (1- methyl -3- ethyl imidazol(e)s tetrafluoroborate) are added in 45Kg water,
The well mixed anticorrosive coating D2 for obtaining aluminum alloy materials of 1000 turns/min mechanical agitations.
Comparative example 3
By 0.4Kg silane couplers, 1Kg nano silicons, 4Kg soluble polyurethanes, 1.2Kg polyacrylamides and
The ionic liquid (1- methyl -3- (mercaptoethyl) tetrafluoroborate) that 1Kg contains sulfydryl is added in 45Kg water, 1000 turns/
The well mixed anticorrosive coating D3 for obtaining aluminum alloy materials of min mechanical agitations.
Test case 1
By in embodiment 1-7 and comparative example 1-3 method prepare coating after preparation the same day (0 day), preparation sealing preserve
60th day, prepare sealing preserve the 120th day and prepare sealing preserve the 180th day, brush respectively in aluminium alloy test block, 110 DEG C of bakings
Solidization, it is 0.8 micron to measure and to form coating layer thickness, and the measurement of rust surface product is then carried out after 200h salt spray tests.Tool
Body result is as shown in table 1.Test block (is purchased from the limited public affairs of Jiangsu Yang Dong Aluminums using 6061 aluminium alloys of 200mm*30mm*3mm sizes
Department)
Table 1
Salt spray test is carried out with reference to GB/T1771-2007 method, as can be seen from the above table, the anticorrosion that the present invention is provided
Coating has good stability, preserve 6 months it is used above still there is good performance, good guarantor is produced to aluminium alloy
Shield is acted on.
Test case 2
Obtained coating in embodiment 1-7 and comparative example 1-3 is brushed on aluminium alloy test block M1-M10 respectively, 110
DEG C baking and curing, it is 0.8 micron to measure and to form coating layer thickness, and the M1-M10 aluminium alloy test blocks after coating are tested, examination
Block uses 6061 aluminium alloys (being purchased from Jiangsu Yang Dong Aluminums Co., Ltd) of 200mm*30mm*3mm sizes.Specific method of testing and
As a result it is as shown in table 2：
Table 2
Wherein, wherein adhesive force is tested according to GB/T5210-2006；Salt spray resistance is carried out according to GB/T1771-2007
Test；Acid resistance, alkali resistance are tested according to GB/T9274-1988, and acid resistance is in 5%H2SO4, carry out under the conditions of 25 DEG C；
Alkali resistance is, in 3%NaOH, to be carried out under the conditions of 25 DEG C；Salt tolerant outlet capacity is tested according to GB/T1763-1989.
In summary, the invention provides a kind of anticorrosion for the aluminum alloy materials that stability is good, anti-corrosion capability is strong painting
Material, the anticorrosive coating can be strong with aluminum alloy surface adhesive force, closely can be fitted with aluminum alloy surface, and this
The anticorrosive coating of invention is water paint, environmental protection, free from environmental pollution.
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (7)
1. a kind of anticorrosive coating of aluminum alloy materials, it is characterised in that the anticorrosive coating includes silane coupler, carboxymethyl
Sodium cellulosate, nano silicon, soluble polyurethane, polyacrylamide, water and the ionic liquid containing sulfydryl.
2. anticorrosive coating as claimed in claim 1, it is characterised in that relative to the ionic liquid containing sulfydryl of 1 parts by weight
Body, the consumption of silane coupler is 0.3~0.8 parts by weight, and the consumption of sodium carboxymethylcellulose is 0.5~1 parts by weight, nanometer two
The consumption of silica is that 0.5~1 parts by weight, the consumption of soluble polyurethane are 2~5 parts by weight, and the consumption of polyacrylamide is 1
~2 parts by weight, the consumption of water is 20~50 parts by weight.
3. anticorrosive coating as claimed in claim 1 or 2, it is characterised in that the ionic liquid containing sulfydryl can be with
For 1- methyl -3- (mercaptoethyl) tetrafluoroborates or 1- methyl -3- (mercaptopropyi) tetrafluoroborate.
4. anticorrosive coating as claimed in claim 1 or 2, it is characterised in that in anticorrosive coating, the silane coupler
For γ-Mercaptopropyltriethoxysilane or γ mercaptopropyitrimethoxy silane.
5. a kind of method for preparing the anticorrosive coating described in claim 1-4 any one, it is characterised in that including by silane
Coupling agent, sodium carboxymethylcellulose, nano silicon, soluble polyurethane, polyacrylamide and the ion containing sulfydryl
Liquid is added to the water, the well mixed anticorrosive coating for obtaining aluminum alloy materials.
6. a kind of aluminum alloy materials method of inhibiting corrosion, it is characterised in that this method is included first by claim 1-4 any one
Described anticorrosive coating is coated in the surface of aluminum alloy materials, and then high temperature is dried.
7. the method described in claim 6, it is characterised in that the condition of high temperature drying includes：90~110 DEG C of temperature, during drying
Between be 6~8 hours；Coating is 0.1~1 micron in the coating layer thickness of aluminum alloy material surface formation after high temperature drying.
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| CN107057548B (en) | 2019-07-26 |
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