CN106280908A - Corrosive protection of aluminium alloy coating, its preparation method and application - Google Patents
Corrosive protection of aluminium alloy coating, its preparation method and application Download PDFInfo
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- CN106280908A CN106280908A CN201610716741.9A CN201610716741A CN106280908A CN 106280908 A CN106280908 A CN 106280908A CN 201610716741 A CN201610716741 A CN 201610716741A CN 106280908 A CN106280908 A CN 106280908A
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- China
- Prior art keywords
- aluminium alloy
- corrosive protection
- alloy coating
- coating
- graphene
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 75
- 238000000576 coating method Methods 0.000 title claims abstract description 63
- 239000011248 coating agent Substances 0.000 title claims abstract description 62
- 231100000078 corrosive Toxicity 0.000 title claims abstract description 41
- 231100001010 corrosive Toxicity 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 30
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- NVKTUNLPFJHLCG-UHFFFAOYSA-N Strontium chromate Chemical compound [Sr+2].[O-][Cr]([O-])(=O)=O NVKTUNLPFJHLCG-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003822 epoxy resin Substances 0.000 claims abstract description 17
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 17
- 239000004593 Epoxy Substances 0.000 claims abstract description 16
- 125000003700 epoxy group Chemical group 0.000 claims abstract description 16
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 14
- LRXTYHSAJDENHV-UHFFFAOYSA-H Zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims abstract description 14
- 239000002270 dispersing agent Substances 0.000 claims abstract description 13
- 229910000165 zinc phosphate Inorganic materials 0.000 claims abstract description 13
- 239000003973 paint Substances 0.000 claims abstract description 12
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 11
- 239000004848 polyfunctional curative Substances 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 38
- LRHPLDYGYMQRHN-UHFFFAOYSA-N n-butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 14
- WVDDGKGOMKODPV-UHFFFAOYSA-N benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 claims description 12
- 239000004952 Polyamide Substances 0.000 claims description 10
- 239000003085 diluting agent Substances 0.000 claims description 10
- 229920002647 polyamide Polymers 0.000 claims description 10
- 239000011528 polyamide (building material) Substances 0.000 claims description 10
- 239000010410 layer Substances 0.000 claims description 9
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 7
- HWKQNAWCHQMZHK-UHFFFAOYSA-N Trolnitrate Chemical compound [O-][N+](=O)OCCN(CCO[N+]([O-])=O)CCO[N+]([O-])=O HWKQNAWCHQMZHK-UHFFFAOYSA-N 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 claims description 5
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- CTQNGGLPUBDAKN-UHFFFAOYSA-N o-xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 5
- JOLVYUIAMRUBRK-UTOQUPLUSA-N 3-[(8Z,11Z)-pentadeca-8,11,14-trienyl]phenol Chemical compound OC1=CC=CC(CCCCCCC\C=C/C\C=C/CC=C)=C1 JOLVYUIAMRUBRK-UTOQUPLUSA-N 0.000 claims description 4
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 4
- 235000019445 benzyl alcohol Nutrition 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- FPKOPBFLPLFWAD-UHFFFAOYSA-N Trinitrotoluene Chemical compound CC1=CC=C([N+]([O-])=O)C([N+]([O-])=O)=C1[N+]([O-])=O FPKOPBFLPLFWAD-UHFFFAOYSA-N 0.000 claims description 3
- 150000004982 aromatic amines Chemical class 0.000 claims description 2
- 239000012153 distilled water Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 230000002335 preservative Effects 0.000 claims description 2
- 239000003755 preservative agent Substances 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000002356 single layer Substances 0.000 claims description 2
- XYIBRDXRRQCHLP-UHFFFAOYSA-N Ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 claims 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 14
- 239000000853 adhesive Substances 0.000 abstract description 7
- 230000001070 adhesive Effects 0.000 abstract description 7
- 239000003960 organic solvent Substances 0.000 abstract description 5
- 239000011780 sodium chloride Substances 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 15
- 150000003839 salts Chemical class 0.000 description 13
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- MOUPNEIJQCETIW-UHFFFAOYSA-N lead chromate Chemical compound [Pb+2].[O-][Cr]([O-])(=O)=O MOUPNEIJQCETIW-UHFFFAOYSA-N 0.000 description 5
- 238000002791 soaking Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- -1 Pulvis Talci Chemical compound 0.000 description 4
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical group [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N acetic acid ethyl ester Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229910001250 2024 aluminium alloy Inorganic materials 0.000 description 2
- DHEQXMRUPNDRPG-UHFFFAOYSA-N Strontium nitrate Chemical compound [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- PXLIDIMHPNPGMH-UHFFFAOYSA-N Sodium chromate Chemical compound [Na+].[Na+].[O-][Cr]([O-])(=O)=O PXLIDIMHPNPGMH-UHFFFAOYSA-N 0.000 description 1
- HGWOWDFNMKCVLG-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Ti+4] Chemical compound [O--].[O--].[Ti+4].[Ti+4] HGWOWDFNMKCVLG-UHFFFAOYSA-N 0.000 description 1
- OXHXATNDTXVKAU-UHFFFAOYSA-N [Zn].OP(O)(O)=O Chemical compound [Zn].OP(O)(O)=O OXHXATNDTXVKAU-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000003247 decreasing Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- HXHYTNUGRGBKIE-UHFFFAOYSA-N formazan Chemical compound NN=CN=N.NN=CN=N HXHYTNUGRGBKIE-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002829 reduced Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XNEOWYGUBMTFKT-UHFFFAOYSA-H trizinc;diphosphate;dihydrate Chemical compound O.O.[Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XNEOWYGUBMTFKT-UHFFFAOYSA-H 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- 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
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
Abstract
The invention discloses a kind of corrosive protection of aluminium alloy coating, its preparation method and application.Described corrosive protection of aluminium alloy coating is mainly made up of epoxy resin, titanium dioxide, Pulvis Talci, strontium chromate, zinc phosphate, Graphene, dispersant, organic solvent, levelling agent, anti-settling agent and epoxy hardener etc..The corrosive protection of aluminium alloy coating of the present invention is easily prepared, with low cost, and the coating (paint film) formed is good with the adhesive force of aluminium alloy, magnesium alloy substrates, pliability is good, comprehensive anticorrosive excellent performance, the corrosion-resistant field at aluminium alloy, magnesium alloy product has wide application prospect.
Description
Technical field
The present invention relates to a kind of metal protection coating, particularly to a kind of corrosive protection of aluminium alloy coating, its preparation method and use
On the way, metal protection field is belonged to.
Background technology
The density of aluminium alloy is relatively low, corrosion resistance and good, specific strength high, be easily worked molding, enables aluminum alloy to goods in sea
Ocean environment and aviation field are used widely.In normal atmospheric corrosive environment, aluminum alloy surface can form the oxygen of densification
Compound protecting film and there is preferable corrosion resistance, but under coastal and inland hygrothermal environment, due in environment containing chloride, sulfur
The unwanted corrosion media such as compound, aluminium alloy structure has the strongest corrosion susceptibility.Compared with other material, aluminium alloy structure
Etching problem is the most prominent.In naval air environment, aluminium alloy is easy to aperture corruption candle occur, mainly due at aluminium alloy
The regional area on surface can be by the corrosion function of chloride ion, and the passivating film of aluminum alloy surface densification ruptures, and inwardly occurs
The aperture of portion's development, and the corrosion of other positions is smaller.
Get on very well in theory, aluminum alloy surface can be formed pitting.But inherently there are some defects in aluminium alloy, such as
Between the end of dislocation of metal surface, scar and metal inside, granule is formed, and causes the passivating film of aluminum alloy surface to occur
Defect, chloride ion is excellent at these fault locations and cation-adsorption, thus forms the chloride of solubility, and pitting corrosion is preferentially at this
A little fault locations occur.
In order to reduce the corrosion susceptibility of aluminium alloy, many research worker have attempted kinds of schemes.Such as, there is research worker
Sol-gel process is used to prepare Nano-meter SiO_22Hybrid coating, forms corrosion-inhibiting coating by dipping-pulling method in aluminum alloy surface, makes
Aluminium alloy corrosion electric current density in 3.5%NaCl solution declines 2 orders of magnitude, but attached between this coating and aluminium alloy
Put forth effort bad, easily come off during long-term corrosion.The most such as, research worker is had to melt, by laser, the method for covering in aluminum alloy surface
Preparing hard alloy coating, although this coating adhesion is good, bond strength is high, but the compactness of coating is poor.
Therefore, develop a kind of simple effective and the coating of corrosion of aluminium alloy speed can be significantly reduced, to extending aluminium alloy
The service life of goods is significant.
Summary of the invention
A kind of corrosive protection of aluminium alloy coating of offer, its preparation method and application are provided, existing to overcome
There is the deficiency in technology.
For realizing aforementioned invention purpose, the technical solution used in the present invention includes:
Embodiments providing a kind of corrosive protection of aluminium alloy coating, it is mainly by epoxy resin, titanium dioxide, Talcum
Powder, strontium chromate, zinc phosphate, Graphene, dispersant, organic solvent, levelling agent, anti-settling agent and epoxy hardener etc. form.
The embodiment of the present invention additionally provides the preparation method of any one corrosive protection of aluminium alloy coating aforementioned, comprising:
Dispersant, Graphene, titanium dioxide and Pulvis Talci are evenly spread in diluent, forms the first mixture；
By epoxy resin, strontium chromate, zinc phosphate uniformly mix in organic solvent, form the second mixture；
First mixture and the second mixture are mixed, and adds levelling agent and anti-settling agent, after mix homogeneously, then add ring
Oxygen firming agent, continues mix homogeneously, forms described corrosive protection of aluminium alloy coating.
The embodiment of the present invention additionally provides the coating formed by any one corrosive protection of aluminium alloy coating aforementioned.
The embodiment of the present invention additionally provides any one corrosive protection of aluminium alloy coating aforementioned in aluminium alloy or magnesium alloy preservative treatment
In purposes.
Than prior art, the corrosive protection of aluminium alloy coating of the present invention is easily prepared, with low cost, and the coating (paint formed
Film) and the adhesive force of aluminium alloy, magnesium alloy substrates is good, pliability is good, comprehensive anticorrosive excellent performance, in aluminium alloy, magnesium alloy system
The corrosion-resistant field of product has wide application prospect.
Accompanying drawing explanation
Fig. 1 is the anticorrosive paint using the embodiment of the present invention 1 photograph after 2024 aluminum alloy surface coat salt fog 2000h
Sheet, wherein coating thickness is 50-60 μm.
Fig. 2 be use the embodiment of the present invention 2 anticorrosive paint when 2024 aluminum alloy anode surface-coated 50 μm,
3.5wt%NaCl solution soaks the AC impedance spectrogram after different time.
Detailed description of the invention
In view of deficiency of the prior art, inventor, through studying for a long period of time and putting into practice in a large number, is proposed the present invention's
Technical scheme.This technical scheme, its implementation process and principle etc. will be further explained as follows.
One aspect of the embodiment of the present invention provides a kind of corrosive protection of aluminium alloy coating, and it is mainly by epoxy resin, dioxy
Change titanium, Pulvis Talci, strontium chromate, zinc phosphate, Graphene, dispersant, organic solvent, levelling agent, anti-settling agent and epoxy hardener etc.
Composition.
In some preferred embodiments, described corrosive protection of aluminium alloy coating includes the following component calculated in parts by weight:
Epoxy resin 20～40 parts, titanium dioxide 5～15 parts, Pulvis Talci 10～15 parts, strontium chromate 10～20 parts, zinc phosphate 5～15 parts,
Graphene 0.1～2 parts, dispersant 0.1～0.5 part, diluent 10～30 parts, levelling agent 0.5～1 part, anti-settling agent 2～3 parts with
And epoxy hardener.
Further, described dispersant include benzyl alcohol, 1,2,3,-thrihydroxy-benzene, triton x-100 any one or two kinds with
On combination, but be not limited to this.
Further, described dispersant is 1:10～1:1, preferably 1:5～1:1 with the mass ratio of Graphene, ratio of greater inequality
For 1:4.
Further, the average diameter (being also regarded as radial dimension) of described Graphene is 20～50 μm, preferably 10
～30 μm, optimum diameter is 25 μm.
Further, described Graphene includes single-layer graphene, few layer graphene (number of plies is typically at 3～10 layers) and multilamellar
Any one or two or more combination in Graphene (number of plies is typically at 10～100 layers).
Further, in described anticorrosive paint, the content of Graphene is 0.1wt%～2wt%, preferably 0.1wt%～
1wt%, optimum content is 0.5wt%.
Further, described epoxy resin includes any one or two or more combination in E20, E44 and E51, but
It is not limited to this.
Described epoxy resin is colorless viscous shape liquid.
Further, during described epoxy hardener includes polyamide, Cardanol, aromatic amine any one or two or more
Combination, but be not limited to this.Wherein, the consumption of epoxy hardener is corresponding with the consumption of epoxy resin, both usage ratio
It is known to industry.
Further, the particle diameter of described strontium chromate (also known as strontium chromate, strontium chrome yellow) be 800～
1200 mesh.Described strontium chromate is yellow powder.
Further, described strontium chromate can be obtained by approach such as commercial, self-controls, such as, and can be by strontium nitrate and sodium chromate
Solution reaction generates precipitation filtration drying and prepares.
Further, in described anticorrosive paint, the content of strontium chromate is 10wt%～20wt%, preferably 15wt%～
20wt%, optimum content is 15wt%.
Further, any one or the two or more group during described anti-settling agent includes polyamide wax, gas silicon, bentonite
Close, but be not limited to this.
Further, during described diluent includes ethanol, n-butyl alcohol, dimethylbenzene, ethyl acetate, butyl acetate, distilled water
Any one or two or more combination, but be not limited to this.
Further, described zinc phosphate can include but not limited to anhydrous phosphoric acid zinc, phosphate dihydrate zinc and four water zinc phosphates
In any one or two or more combination.
Further, described levelling agent is selected from suitable type known to industry, such as, be selected from but be not limited to BYK300,
Any one or two or more combination in BYK306 and BYK333, in order to promote coating to form one during drying and forming-film
Individual film smooth, smooth, uniform.
The embodiment of the present invention another aspect provides a kind of method preparing described corrosive protection of aluminium alloy coating, its bag
Include:
Dispersant, Graphene, titanium dioxide and Pulvis Talci are evenly spread in diluent, forms the first mixture；
By epoxy resin, strontium chromate, zinc phosphate uniformly mix in organic solvent, form the second mixture；
First mixture and the second mixture are mixed, and adds levelling agent and anti-settling agent, after mix homogeneously, then add ring
Oxygen firming agent, continues mix homogeneously, forms described corrosive protection of aluminium alloy coating.
Described corrosive protection of aluminium alloy coating can be applicable to the equipment surface such as aluminium alloy, magnesium alloy product, plays closing and anticorrosion
Erosion effect.
The embodiment of the present invention another aspect provides the coating formed by described corrosive protection of aluminium alloy coating.
The described corrosive protection of aluminium alloy coating that another aspect provides of the embodiment of the present invention is prevented in aluminium alloy or magnesium alloy
Purposes in rotten process.
The embodiment of the present invention another aspect provides a kind of aluminium alloy or magnesium alloy means of defence, comprising: at aluminum
Corrosive protection of aluminium alloy coating described in alloy or magnesium alloy substrates surface-coated, and make described anticorrosive paint film-forming (preferably exist
Cured at room temperature film forming).
In foregoing embodiments, adoptable coating method include but not limited to trowelling, spin coating, scratch, spraying etc.
Any suitable method known to industry.
In some more specific embodiment, preparation and the application process of a kind of corrosive protection of aluminium alloy coating can include
Following steps:
(1) by dispersant, Graphene (powder shaped), titanium dioxide and Pulvis Talci by a certain percentage, ultrasonic it is distributed to successively
In diluent；
(2) by epoxy resin, strontium chromate, zinc yellow are sequentially added in diluent (such as n-butyl alcohol), and about 1500r/min stirs
About 30min；
(3) step (1) and (2) obtained material are mixed, add levelling agent and anti-settling agent, about 1000r/min stir about
20min, adds epoxy hardener, stirs, be coated to aluminium alloy (or magnesium alloy) surface, cold curing film forming, it is achieved right
The closing of aluminium alloy (or magnesium alloy) and anticorrosion.
Compared with existing corrosive protection of aluminium alloy coating, corrosive protection of aluminium alloy Paint preparation technology of the present invention is simple and aluminium alloy base
The adhesive force of material is good, paint film flexibility is good, comprehensive anticorrosive excellent performance.
Below in conjunction with some embodiments and accompanying drawing etc., the present invention is described in more detail, but described embodiment do not constitute right
The restriction of the present invention.
Embodiment 1
By 0.2g 1,2,3,-thrihydroxy-benzene, 0.8g Graphene, (purchased from Ningbo Mo Xi Science and Technology Ltd., the Graphene number of plies is about 6～8
Layer) it is dispersed in 20mL n-butyl alcohol, 1500r/min stirs 30min, is then sequentially added into 6g titanium dioxide, 15g Pulvis Talci, stirs
Mix, made dispersed paste is added in 20g epoxy resin E20 (purchased from Shandong De Yuan epoxy Science and Technology Ltd.), is sequentially added into
10g strontium chromate (purchased from subsidiary factory of Suzhou City of Shanghai Chrome Yellow Plant), 8g zinc phosphate (wins Chemical Co., Ltd. purchased from upper Solenognathus),
15mL dimethylbenzene, 1g polyamide wax, 1g bentonite, 0.5g levelling agent BYK392,1000r/min stir 20min, then add
10g Cardanol firming agent (purchased from Wuxi light Chemical Co., Ltd.), stirs, i.e. can get corrosive protection of aluminium alloy coating, by
Its adhesive force of coating, pliability, salt spray resistance and salt water resistance improving soaking formed is shown in Table 1.By coated aluminum alloy specimen
Carrying out salt mist experiment, Fig. 1 is shown in by salt fog photo after 2000 hours.
Embodiment 2
By 0.1g triton X-100,0.1g benzyl alcohol and 0.7g Graphene (purchased from Ningbo Mo Xi Science and Technology Ltd., graphite
The alkene number of plies is about 6～8 layers) it is dispersed in 30mL n-butyl alcohol, 1500r/min stirs 30min, is then sequentially added into 10g titanium dioxide
Titanium, 15g Pulvis Talci, stirring, made dispersed paste is added to 20g epoxy resin E44 (purchased from the Shandong De Yuan epoxy limited public affairs of science and technology
Department) in, it being sequentially added into 15g strontium chromate (purchased from subsidiary factory of Suzhou City of Shanghai Chrome Yellow Plant), 8g zinc phosphate is (purchased from upper Solenognathus richization
Work company limited), 15mL dimethylbenzene, 1g polyamide wax, 0.5g bentonite, 0.6g levelling agent BYK392,1000r/min stir
20min, then adds 12g polyamide curing agent DF1228 (purchased from Shandong De Yuan epoxy Science and Technology Ltd.), stirs, i.e.
Available corrosive protection of aluminium alloy coating, it adhesive force of the coating formed, pliability, salt spray resistance and salt water resistance improving soaking are shown in Table
1.Coating is coated in aluminum alloy anode surface, and controlling coating thickness is 50 μm, only soaks different time at 3.5%NaCl solution
After AC impedance spectrogram see Fig. 2.After soaking 28 days, the impedance magnitude of coating is not remarkably decreased, and illustrates that made coating is to aluminum
Alloy has good barrier propterty.
Embodiment 3
By 0.2g 1,2,3,-thrihydroxy-benzene and 0.8g Graphene, (purchased from Ningbo Mo Xi Science and Technology Ltd., the Graphene number of plies is 6～8
Layer) it is dispersed in 20mL n-butyl alcohol, 1500r/min stirs 30min, is then sequentially added into 8g titanium dioxide, 12g Pulvis Talci, stirs
Mix, made dispersed paste is added in 20g epoxy resin (purchased from Shandong De Yuan epoxy Science and Technology Ltd.), is sequentially added into 10g
Strontium chromate (purchased from subsidiary factory of Suzhou City of Shanghai Chrome Yellow Plant), 8g zinc phosphate (wins Chemical Co., Ltd. purchased from upper Solenognathus), 15mL
Dimethylbenzene, 2g polyamide wax, 0.5g levelling agent BYK392,1000r/min stir 20min, then add 10g Cardanol firming agent
(purchased from Wuxi light Chemical Co., Ltd.), stirs, i.e. can get corrosive protection of aluminium alloy coating, it coating formed attached
Put forth effort, pliability, salt spray resistance and salt water resistance improving soaking are shown in Table 1.
Embodiment 4
By 0.2g benzyl alcohol and 0.7g Graphene (purchased from Ningbo Mo Xi Science and Technology Ltd., the Graphene number of plies is 6～8 layers)
Being dispersed in 20mL n-butyl alcohol, 1500r/min stirs 30min, is then sequentially added into 6g titanium dioxide, 15g Pulvis Talci, stirs,
Made dispersed paste is added in 25g epoxy resin (purchased from Shandong De Yuan epoxy Science and Technology Ltd.), is sequentially added into 10g strontium chromium
Yellow (purchased from subsidiary factory of Suzhou City of Shanghai Chrome Yellow Plant), 8g zinc phosphate (wins Chemical Co., Ltd. purchased from upper Solenognathus), 15mL diformazan
Benzene, 1g polyamide wax, 1g bentonite, 0.5g levelling agent BYK392,1000r/min stir 20min, then add 10g polyamide
Firming agent DF1228 (purchased from Shandong De Yuan epoxy Science and Technology Ltd.), stirs, i.e. can get corrosive protection of aluminium alloy coating, by
Its adhesive force of coating, pliability, salt spray resistance and salt water resistance improving soaking formed is shown in Table 1.
Should be appreciated that above-described embodiment is only technology design and the feature of the explanation present invention, its object is to allow and be familiar with this
The personage of item technology will appreciate that present disclosure and implements according to this, can not limit the scope of the invention with this.All
The equivalence change made according to spirit of the invention or modification, all should contain within protection scope of the present invention.
The comprehensive physical performance of the corrosive protection of aluminium alloy coating of table 1 embodiment 1-embodiment 4 preparation
| Physical property | Examination criteria | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Outward appearance | Observe | Smooth | Smooth | Smooth | Smooth |
| Adhesive force | GB/T 5210 | 0 grade | 0 grade | 0 grade | 0 grade |
| Salt spray resistance (h) | GB/T 1771 | 2000 | 2500 | 2000 | 2100 |
| Pliability | GB/T1731 | 1 grade | 1 grade | 1 grade | 1 grade |
| Resistance to acids and bases (h) | GB/T9274 | 1500 | 1200 | 1300 | 1200 |
| Salt water resistance performance (h) | GB1763 | 800 | 900 | 850 | 850 |
Claims (10)
1. a corrosive protection of aluminium alloy coating, it is characterised in that include the following component calculated in parts by weight: epoxy resin 20～
40 parts, titanium dioxide 5～15 parts, Pulvis Talci 10～15 parts, strontium chromate 10～20 parts, zinc phosphate 5～15 parts, Graphene 0.1～2
Part, dispersant 0.1～0.5 part, diluent 10～30 parts, levelling agent 0.5～1 part, anti-settling agent 2～3 parts and epoxy hardener.
2. corrosive protection of aluminium alloy coating as claimed in claim 1, it is characterised in that: described dispersant includes benzyl alcohol, even benzene three
Phenol, any one or two or more combination of triton x-100；And/or, described dispersant is 1 with the mass ratio of Graphene:
10～1:1, preferably 1:5～1:1, ratio of greater inequality are 1:4.
3. corrosive protection of aluminium alloy coating as claimed in claim 1, it is characterised in that: the average diameter of described Graphene is 20～50
μm, preferably 10～30 μm, optimum diameter is 25 μm；And/or, described Graphene include single-layer graphene, few layer graphene and
Any one or two or more combination in multi-layer graphene；And/or, in described anticorrosive paint, the content of Graphene is
0.1wt%～2wt%, preferably 0.1wt%～1wt%, optimum content is 0.5wt%.
4. corrosive protection of aluminium alloy coating as claimed in claim 1, it is characterised in that: described epoxy resin includes E20, E44 and E51
In any one or two or more combination；And/or, described epoxy hardener includes in polyamide, Cardanol, aromatic amine
Any one or two or more combination.
5. corrosive protection of aluminium alloy coating as claimed in claim 1, it is characterised in that: the particle diameter of described strontium chromate is 800～1200
Mesh；And/or, in described anticorrosive paint, the content of strontium chromate is 10wt%～20wt%, preferably 15wt%～20wt%, optimum
Content is 15wt%.
6. corrosive protection of aluminium alloy coating as claimed in claim 1, it is characterised in that: described anti-settling agent include polyamide wax, gas silicon,
Any one or two or more combination in bentonite；And/or, described diluent includes ethanol, n-butyl alcohol, dimethylbenzene, second
Any one or two or more combination in acetoacetic ester, butyl acetate, distilled water；And/or, described levelling agent includes
Any one or two or more combination in BYK300, BYK306 and BYK333.
7. the preparation method of the corrosive protection of aluminium alloy coating as according to any one of claim 1-6, it is characterised in that including:
Dispersant, Graphene, titanium dioxide and Pulvis Talci are evenly spread in diluent, forms the first mixture；
By epoxy resin, strontium chromate, zinc phosphate uniformly mix in diluent, form the second mixture；
First mixture and the second mixture being mixed, and add levelling agent and anti-settling agent, after mix homogeneously, then it is solid to add epoxy
Agent, continues mix homogeneously, forms described corrosive protection of aluminium alloy coating.
8. the coating formed by corrosive protection of aluminium alloy coating according to any one of claim 1-6.
9. the use in aluminium alloy or magnesium alloy preservative treatment of the corrosive protection of aluminium alloy coating as according to any one of claim 1-6
On the way.
10. an aluminium alloy or magnesium alloy means of defence, it is characterised in that including: in aluminium alloy or magnesium alloy substrates surface-coated
Corrosive protection of aluminium alloy coating according to any one of claim 1-6, and make described anticorrosive paint film-forming.
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