CN115960496A - Weather-resistant corrosion-resistant metal fluorocarbon coating and preparation method thereof - Google Patents
Weather-resistant corrosion-resistant metal fluorocarbon coating and preparation method thereof Download PDFInfo
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- CN115960496A CN115960496A CN202310029552.4A CN202310029552A CN115960496A CN 115960496 A CN115960496 A CN 115960496A CN 202310029552 A CN202310029552 A CN 202310029552A CN 115960496 A CN115960496 A CN 115960496A
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- 238000000576 coating method Methods 0.000 title claims abstract description 113
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 239000011248 coating agent Substances 0.000 title claims abstract description 108
- 230000007797 corrosion Effects 0.000 title claims abstract description 44
- 238000005260 corrosion Methods 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 22
- 239000002184 metal Substances 0.000 title claims abstract description 22
- 239000007769 metal material Substances 0.000 claims abstract description 118
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 56
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 41
- 239000004005 microsphere Substances 0.000 claims abstract description 32
- 238000002156 mixing Methods 0.000 claims abstract description 28
- 239000002270 dispersing agent Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims abstract description 16
- 239000000049 pigment Substances 0.000 claims abstract description 14
- 238000000227 grinding Methods 0.000 claims abstract description 12
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 9
- 239000000839 emulsion Substances 0.000 claims abstract description 9
- 239000002562 thickening agent Substances 0.000 claims abstract description 8
- 239000008367 deionised water Substances 0.000 claims abstract description 7
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 7
- 229920005989 resin Polymers 0.000 claims abstract description 5
- 239000011347 resin Substances 0.000 claims abstract description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229920003180 amino resin Polymers 0.000 claims abstract description 4
- 239000000654 additive Substances 0.000 claims abstract description 3
- 230000000996 additive effect Effects 0.000 claims abstract description 3
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 33
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims description 28
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 27
- 238000002161 passivation Methods 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 18
- 238000005406 washing Methods 0.000 claims description 18
- 239000006185 dispersion Substances 0.000 claims description 17
- 239000000919 ceramic Substances 0.000 claims description 15
- 229960003638 dopamine Drugs 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 14
- 238000005245 sintering Methods 0.000 claims description 14
- 229910000838 Al alloy Inorganic materials 0.000 claims description 12
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 10
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 238000000967 suction filtration Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 238000002791 soaking Methods 0.000 claims description 8
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 6
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 239000011684 sodium molybdate Substances 0.000 claims description 5
- 235000015393 sodium molybdate Nutrition 0.000 claims description 5
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims description 5
- 238000011282 treatment Methods 0.000 claims description 5
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 25
- 239000000243 solution Substances 0.000 description 12
- 239000011259 mixed solution Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- 239000013067 intermediate product Substances 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 239000003973 paint Substances 0.000 description 6
- 230000007062 hydrolysis Effects 0.000 description 5
- 238000006460 hydrolysis reaction Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 239000002585 base Substances 0.000 description 4
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000499 gel Substances 0.000 description 4
- 238000006068 polycondensation reaction Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 239000007853 buffer solution Substances 0.000 description 3
- 239000003518 caustics Substances 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910002800 Si–O–Al Inorganic materials 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- -1 cyano apatite Chemical compound 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 1
- IMQFZQVZKBIPCQ-UHFFFAOYSA-N 2,2-bis(3-sulfanylpropanoyloxymethyl)butyl 3-sulfanylpropanoate Chemical compound SCCC(=O)OCC(CC)(COC(=O)CCS)COC(=O)CCS IMQFZQVZKBIPCQ-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 229910001094 6061 aluminium alloy Inorganic materials 0.000 description 1
- 241001268993 Heterochrosis Species 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- IBVAQQYNSHJXBV-UHFFFAOYSA-N adipic acid dihydrazide Chemical group NNC(=O)CCCCC(=O)NN IBVAQQYNSHJXBV-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052586 apatite Inorganic materials 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- GHLITDDQOMIBFS-UHFFFAOYSA-H cerium(3+);tricarbonate Chemical compound [Ce+3].[Ce+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O GHLITDDQOMIBFS-UHFFFAOYSA-H 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 235000019864 coconut oil Nutrition 0.000 description 1
- 239000003240 coconut oil Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000002804 dopamine agent Substances 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000012875 nonionic emulsifier Substances 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 229920001843 polymethylhydrosiloxane Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
Classifications
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Paints Or Removers (AREA)
Abstract
The application relates to the field of fluorocarbon coatings, and particularly discloses a weather-resistant corrosion-resistant metal fluorocarbon coating and a preparation method thereof. The coating comprises the following components: 50-60 parts of FEVE aqueous fluorocarbon emulsion, 10-30 parts of deionized water, 3-15 parts of pigment and filler, 0.5-2.0 parts of defoaming agent, 0.5-1.0 part of thickening agent, 0.5-2.0 parts of curing agent, 0.2-0.5 part of flatting agent, 3-5 parts of modified material, 0.2-1.0 part of dispersing agent, 3-8 parts of metal material, 2.6-7.0 parts of film-forming additive, 1.0-2.5 parts of amino resin, 5.2-11.0 parts of acrylic modified resin and 1.0-2.5 parts of water-retaining agent; 3-5 parts of a modified material; the metal material comprises aluminum powder and porous aluminum microspheres. The preparation method comprises the following steps: s1, grinding; s2, mixing; and S3, dispersing. The coating has the advantages of excellent adhesive force and excellent corrosion resistance.
Description
Technical Field
The application relates to the technical field of coatings, in particular to a weather-resistant corrosion-resistant metal fluorocarbon coating and a preparation method thereof.
Background
The water-based fluorocarbon coating is commonly called as a water-based fluorocarbon coating, and is prepared by mixing and emulsifying fluorocarbon resin and a non-ionic emulsifier to obtain fluorocarbon emulsion, and then mixing the fluorocarbon emulsion with an auxiliary agent, a cosolvent, water and the like. Because the bond energy of the fluorocarbon group in the water-based fluorocarbon coating is larger, the coating formed by the coating has better resistance to chemicals and sunlight, and can protect a coated object for a longer time.
Some coated objects, such as various transportation vehicles, engineering machinery, high-grade instruments and equipment, cement wall surfaces, ceramic tiles, aluminum alloy wall surfaces and the like, need high-grade decoration, such as endowing the surfaces of the coated objects with better glossiness, so that the metal fluorocarbon coating is produced at the same time. The metal material is added into the water-based fluorocarbon coating, so that the coating has better glossiness, and has excellent gloss retention, color retention and dirt resistance, and the coated object can obtain metal luster and corrosion resistance effect for a long time.
In view of the above related technologies, the inventors found that, when a metal material is directly added to a fluorocarbon coating and water is used as a dispersion system for the fluorocarbon coating, the dispersion effect of the metal material in the fluorocarbon coating is poor, and the adhesion property of the metal material after curing is poor, that is, the water-based fluorocarbon coating has the defects of low adhesion and poor corrosion resistance.
Disclosure of Invention
In order to improve the defect that the adhesion force of the water-based fluorocarbon coating is poor compared with the corrosion resistance effect, the application provides the weather-resistant corrosion-resistant metal fluorocarbon coating and the preparation method thereof.
In a first aspect, the application provides a weather-resistant and corrosion-resistant metal fluorocarbon coating, which adopts the following technical scheme:
the weather-resistant corrosion-resistant metal fluorocarbon coating comprises the following substances in parts by weight: 50-60 parts of FEVE aqueous fluorocarbon emulsion; 10-30 parts of deionized water; 3-15 parts of pigment and filler; 0.5-2.0 parts of defoaming agent; 0.5-1.0 part of thickening agent; 0.2-1.0 part of dispersant; 0.5-2.0 parts of curing agent; 0.2-0.5 part of leveling agent; 3-8 parts of a metal material; 2.6-7.0 parts of a film-forming additive; 1.0-2.5 parts of amino resin; 5.2-11.0 parts of acrylic modified resin; 1.0-2.5 parts of a water-retaining agent; 3-5 parts of a modified material; the modified material comprises a nano hydroxyapatite-hyperbranched modified composite material and nano titanium dioxide wrapping cerium, the particle size of the nano hydroxyapatite is 2-100 mu m, and the particle size of the nano hydroxyapatite is 2-100 mu m; the metal material comprises flaky aluminum powder and porous aluminum microspheres.
Through adopting above-mentioned technical scheme, in the preferred adoption flake aluminum powder and the cooperation of porous aluminium microballon added to fluorocarbon coating among this application technical scheme, because the flake aluminum powder has the glossiness and the effect of angle of following heterochrosis of preferred, consequently gives the glossiness of fluorocarbon coating preferred, and the adding of porous aluminium microballon increases the ball effect in metal material, has reduced the flake aluminum powder and has piled up, the possibility of reuniting. Meanwhile, the porous aluminum microspheres can increase the specific surface area of the metal material and further improve the suspension dispersion effect of the metal material in the fluorocarbon coating, so that the fluorocarbon coating can be uniformly and firmly loaded on a coated object. In addition, the flaky aluminum powder and the porous aluminum microspheres can react with acid and alkali in advance to form a passivation layer, so that further corrosion of a paint film by corrosive substances is prevented, and the corrosion resistance effect of the fluorocarbon coating is improved.
The hyperbranched material has the characteristics of a highly branched structure, approximately spherical molecular shape, a large number of active end groups for modification on the outer surface, a unique microporous structure in the interior and the like, and after the nano cyano apatite is compounded with the hyperbranched material, a three-dimensional cavity structure formed by the hyperbranched material bearing a large number of active functional groups can stabilize nano hydroxyapatite particles, so that the nano hydroxyapatite particles can be used as a good carrier material, the dispersion effect of pigment and filler in the FEVE aqueous fluorocarbon coating is further improved, the adhesion performance of the FEVE aqueous fluorocarbon coating after coating is improved, and the corrosion resistance of the FEVE aqueous fluorocarbon coating is further improved.
In addition, the coating of the cerium oxide film structure enables the particles of the nano titanium dioxide to be regular, maintains the integrity of the nano titanium dioxide, is not easy to agglomerate, and is uniformly dispersed in the coating, so that the coating obtains a good weather-resistant effect.
Preferably, the preparation method of the porous aluminum microspheres comprises the following steps: and (3) mixing the ceramic hollow spheres and aluminum alloy powder at equal intervals, filling the space between the hollow spheres with the aluminum alloy powder, compacting, sintering in vacuum, cooling, and grinding to obtain the porous aluminum microspheres.
Through adopting above-mentioned technical scheme, preferentially adopt ceramic hollow ball as reinforcement preparation porous aluminium microballon among this application technical scheme, improved porous aluminium microballon's intensity and inside cavity degree, porous aluminium microballon can effectively break through piling up and the reunion of flake aluminium powder promptly to stably play the ball effect, stably improved the dispersion homogeneity of metal material in fluorocarbon coating. In addition, the surface pore structure of the porous aluminum microspheres can enhance the adsorption effect of the fluorocarbon coating and improve the adhesive force of the fluorocarbon coating.
In addition, the ceramic hollow spheres are matched with the aluminum alloy powder, so that a smooth thin-layer transition phase can be formed outside the ceramic hollow spheres, namely, a stable hollow structure is obtained in the porous aluminum microspheres, and the porous aluminum microspheres can be stably suspended and dispersed in the fluorocarbon coating. And the uniform pore structure on the surface of the porous aluminum microsphere can load and disperse the filler in the fluorocarbon coating, so that the fluorocarbon coating obtains uniform color and glossiness.
Preferably, the sintering temperature in the vacuum sintering is 620-680 ℃.
Through adopting above-mentioned technical scheme, the temperature of vacuum sintering has been preferred among this application technical scheme, and suitable sintering temperature can make ceramic hollow ball and aluminum alloy combine firmly, is difficult for dropping, and the aluminum alloy takes place moderate degree liquid phase, can effectively fill the hole between the ceramic hollow ball, strengthens the bonding fastness between ceramic hollow ball and the aluminum alloy to promote the growth rate of sintering neck, strengthen the bonding fastness between the aluminum alloy powder, improved the intensity of porous aluminum microsphere.
Preferably, the metal material is a metal material modified by dispersion with a dispersant, and the dispersant includes a silane coupling agent.
By adopting the technical scheme, the metal material is wrapped by the silane coupling agent, and the hydrophilic group is introduced on the surface of the metal material, so that the dispersion uniformity of the metal material in the fluorocarbon coating is improved. Meanwhile, the silane coupling agent can connect the flake aluminum powder and the porous aluminum microspheres, namely a spherical and flaky connecting structure can be formed, the possibility of excessive stacking and agglomeration of the flake aluminum powder is effectively reduced, the flake aluminum powder can effectively exert the effect of angle-dependent color variation, and the glossiness of the fluorocarbon coating is improved.
Preferably, the dispersant further comprises any one of triethanolamine, dopamine and silicone gel.
According to the technical scheme, firstly, triethanolamine and a silane coupling agent are matched to serve as a dispersing agent, the triethanolamine is loaded on the surface of a metal material through electrostatic adsorption, more-OH groups are obtained on the surface of the metal material to provide reaction sites for grafting of the silane coupling agent, and the silane coupling agent is grafted on the surface of the metal material through coupling to form a protective layer, so that corrosion of corrosive substances to a paint film is effectively prevented, and the corrosion prevention effect of the fluorocarbon coating is improved.
And secondly, dopamine and a silane coupling agent are adopted to be matched as a dispersing agent, so that the dopamine has good adhesion, can be self-assembled and deposited on the surface of the metal to form an adsorption film, and the adhesion of the fluorocarbon coating is further improved. And then introducing hydrophilic groups on the surface of the metal material through a silane coupling agent, so that the metal material can be uniformly dispersed in the fluorocarbon coating, and the fluorocarbon coating can obtain uniform adhesive force.
Finally, the silicon gel and the silane coupling agent are matched to be used as a dispersing agent, and a Si-O-Al bond is formed on the surface of the metal material in a hydrolysis, polycondensation and bonding mode, namely an organic/inorganic hybrid coating layer is formed on the metal material, so that the metal material not only has a compact and uniform protective layer, but also can maintain the glossiness of the metal material, and the corrosion resistance effect and the glossiness of the fluorocarbon coating are improved.
Preferably, the dispersing agent comprises a silane coupling agent and a silica gel, and the dispersion modification comprises the following steps: taking the metal material, anhydrous ethanol, tetraethoxysilane, silane coupling agent, water and ammonia water according to a mass ratio of 2.
By adopting the technical scheme, the proportion of each component is optimized in the technical scheme, so that the proportion of the ethyl orthosilicate and the silane coupling agent is proper, the hydrolysis and polycondensation rates of the ethyl orthosilicate and the silane coupling agent are proper, a network structure formed by the ethyl orthosilicate can be uniformly coated on the metal material, and a compact coating film can be formed on the metal material. The proper water amount can promote the hydrolysis of the ethyl orthosilicate and the silane coupling agent, inhibit the condensation of silanol and has excellent coating effect. And the proper ammonia water addition amount promotes the hydrolysis and polycondensation of the ethyl orthosilicate and the silane coupling agent, optimizes the ion concentration in the system and forms a uniform coating film.
Preferably, the metal material is pretreated before being mixed with the absolute ethyl alcohol, and the pretreatment comprises the following preparation steps: soaking a metal material in acetone, stirring and mixing, performing suction filtration, retaining a solid, washing, and drying to obtain a clean metal material; and mixing a clean metal material with a passivation solution, continuously reacting, washing, filtering and drying to obtain the pretreated metal material, wherein the passivation solution comprises sodium molybdate, water and ethanol, and the mass concentration of the passivation solution is 0.05-0.2%.
By adopting the technical scheme, the metal material is pretreated, the passivation film is formed on the surface of the metal material through the passivation solution, the corrosion resistance effect of the metal material and the fluorocarbon coating is improved, and-OH groups are introduced on the surface of the metal material to induce the hydrolysis-condensation of the tetraethoxysilane on the surface of the metal material. According to the technical scheme, the concentration of the passivation solution is optimized, the proper concentration can enable the metal surface to be uniformly covered with the deposit, the metal material can be oxidized and reduced with sodium molybdate to form the deposit, and the molybdate ions can be adsorbed to the surface of the metal material to form a passivation film in a matching manner, so that the corrosion resistance effect of the fluorocarbon coating is enhanced.
Preferably, the mass ratio of the dopamine to the metal material is 3-5, and the mass ratio of the triethanolamine to the metal material is 2-3.
By adopting the technical scheme, the mass ratio of the metal material to the dopamine is optimized in the technical scheme, the appropriate dopamine content can form a uniform adsorption layer on the surface of the metal material, and therefore the fluorocarbon coating obtains uniform and excellent adhesive force. Meanwhile, the technical scheme optimizes the mass ratio of the triethanolamine to the metal material, can introduce more-OH on the metal material and promotes the combination effect of the silane coupling agent on the metal material.
In a second aspect, the application provides a preparation method of a weather-resistant corrosion-resistant metal fluorocarbon coating, which adopts the following technical scheme:
a preparation method of weather-resistant corrosion-resistant metal fluorocarbon coating comprises the following steps: s1, grinding: firstly, sequentially adding pigment, filler, metal material, dispersant and deionized water into a grinding device, grinding and sieving, and collecting to obtain a matrix coating; s2, mixing: adding FEVE aqueous fluorocarbon emulsion, a defoaming agent, a thickening agent, a flatting agent and a modified material into the matrix coating, and stirring and mixing to obtain an aqueous fluorocarbon base material; s3, dispersing: adding the curing agent into the aqueous fluorocarbon base material before spraying, and stirring and dispersing to prepare the corrosion-resistant strong-adhesion FEVE aqueous fluorocarbon coating.
By adopting the technical scheme, the pigment and filler, the metal material and the dispersant are ground and dispersed in advance, the particle sizes of the metal material and the pigment and filler are refined, and the dispersion uniformity among the components in the fluorocarbon coating is improved.
In summary, the present application has the following beneficial effects:
1. due to the fact that the flake aluminum powder and the porous aluminum microspheres are preferably matched and added into the fluorocarbon coating, the fluorocarbon coating is endowed with excellent gloss through the glossiness and the effect of color variation along with angles of the flake aluminum powder; the porous aluminum microspheres are added to play a role of rolling balls in the metal material, so that the flaky aluminum powder is not easy to stack and agglomerate. Meanwhile, the porous aluminum microspheres can increase the specific surface area of the metal material, improve the suspension dispersibility of the metal material and enable the fluorocarbon coating to be uniformly and firmly loaded on an object to be coated. In addition, the flaky aluminum powder and the porous aluminum microspheres can react with acid and alkali in advance to form a passivation layer, so that further corrosion of a paint film by corrosive substances is prevented, and the corrosion resistance effect of the fluorocarbon coating is improved.
2. The preferred ceramic hollow ball and the aluminum alloy cooperation of adopting in this application can form smooth thin layer transition phase outside the ceramic hollow ball, obtains stable hollow structure in the porous aluminum microballon promptly, and the porous aluminum microballon can be stabilized the suspension and disperse in fluorocarbon coating. And the uniform pore structure on the surface of the porous aluminum microsphere can load and disperse the filler in the fluorocarbon coating, so that the fluorocarbon coating obtains uniform color and glossiness.
3. According to the method, the pigment, the filler, the metal material and the dispersing agent are ground and dispersed in advance, the particle sizes of the pigment, the filler and the metal material are refined, and the dispersing agent is coated on the surfaces of the pigment, the filler and the metal material, so that the components in the fluorocarbon coating can be uniformly dispersed, and the fluorocarbon coating can obtain uniform glossiness and adhesive force.
Detailed Description
The present application will be described in further detail with reference to examples.
Preparation example
Preparation example of porous aluminum microspheres
Preparation example 1
And uniformly mixing 3.8L of ceramic hollow spheres and 6.2L of 200-mesh 6061 aluminum alloy powder at equal intervals, filling the intervals of the ceramic hollow spheres with the aluminum alloy powder, compacting, sintering in a vacuum sintering furnace at 620 ℃ for 2 hours, cooling to room temperature along with the furnace, and taking out to obtain the porous aluminum microspheres 1.
In the embodiment, the ceramic hollow spheres are vitrified micro bubbles with the particle size of 10-400 mu m.
Preparation example 2
The difference from preparation example 1 is that: the vacuum sintering temperature is 650 ℃, and the porous aluminum microspheres 2 are prepared.
Preparation example 3
The difference from preparation example 1 is that: the vacuum sintering temperature is 680 ℃, and the porous aluminum microspheres 3 are prepared.
Preparation example 4
Hollow alumina microspheres are used as the porous aluminum microspheres 4.
Examples of production of Metal Material
Preparation example 5
Taking 3kg of flaky aluminum powder and 1kg of porous aluminum microspheres 1, and stirring and mixing to obtain the metal material 1.
Preparation examples 6 to 8
The difference from preparation example 5 is that: and (3) replacing the porous aluminum microspheres 1 in the preparation example 5 with the porous aluminum microspheres 2-4 with equal mass to obtain the metal materials 2-4.
Examples of preparation of Dispersion-modified Metal Material
Preparation example 9
And (2) soaking the metal material 2 in a silane coupling agent KH-550, stirring and mixing, washing with absolute ethanol, carrying out suction filtration to retain solids, washing, and drying to obtain the dispersed and modified metal material 1.
Preparation example 10
1kg of metal material 2 is immersed in 2kg of triethanolamine, stirred and dispersed, reacted for 6 hours at 30 ℃, filtered to retain solid, washed and dried to obtain an intermediate product. And (3) soaking the intermediate product in a silane coupling agent PMHS, stirring and mixing, washing with absolute ethyl alcohol, carrying out suction filtration to retain solids, washing, and drying to obtain the dispersion modified metal material 2.
Preparation example 11
The difference from preparation example 10 is that: 1kg of the metal material 2 was immersed in 3kg of triethanolamine to prepare a dispersion-modified metal material 3.
Preparation example 12
0.3kg of dopamine and 10kg of buffer solution were mixed to prepare a mixed solution, and 5kg of metal material was immersed in the mixed solution and reacted at 30 ℃ and Ph =8.5 for 24 hours to obtain an intermediate product. And (3) soaking the intermediate product in a silane coupling agent KH-550, stirring and mixing, washing with absolute ethanol, carrying out suction filtration to retain solids, washing, and drying to obtain the dispersion modified metal material 4.
Preparation example 15
0.4kg of dopamine and 10kg of buffer solution were mixed to prepare a mixed solution, and 5kg of metal material was immersed in the mixed solution and reacted at 30 ℃ and Ph =8.5 for 24 hours to obtain an intermediate product. And (3) soaking the intermediate product in a silane coupling agent KH-550, stirring and mixing, washing with absolute ethyl alcohol, carrying out suction filtration to retain solids, washing, and drying to obtain the dispersion modified metal material 5.
Preparation example 16
0.5kg of dopamine and 10kg of buffer solution were mixed to prepare a mixed solution, and 5kg of metal material was immersed in the mixed solution and reacted at 30 ℃ and Ph =8.5 for 24 hours to obtain an intermediate product. And (3) soaking the intermediate product in a silane coupling agent KH-550, stirring and mixing, washing with absolute ethanol, carrying out suction filtration to retain a solid, washing, and drying to obtain the dispersion modified metal material 6.
Preparation examples 17 to 19
Taking a metal material 2, anhydrous ethanol 1-4, ethyl orthosilicate, a silane coupling agent VTES, ammonia water and water, wherein the specific mass is shown in Table 1. Mixing a metal material and absolute ethyl alcohol 1, stirring for 1h in a nitrogen atmosphere to obtain a mixed solution, heating to 50 ℃, dropwise adding the mixed solution of tetraethoxysilane and absolute ethyl alcohol 2, the mixed solution of silane coupling agent VTES and absolute ethyl alcohol 3, the mixed solution of ammonia water and absolute ethyl alcohol 4 and water into the mixed solution, controlling the dropwise adding speed to be 1d/s, after the dropwise adding is finished, reacting for 6h at constant temperature, performing a rigid reaction, performing suction filtration, retaining solids, washing with absolute ethyl alcohol, and drying to obtain a dispersed and modified metal material 7-9.
TABLE 1 PREPARATION EXAMPLES 17 to 19 Dispersion-modified Metal Material compositions
Preparation example 20
The difference from preparation 18 is that: before the metal material 2 is mixed with the absolute ethyl alcohol, the metal material 2 is pretreated, and the pretreatment comprises the following steps: taking 0.0005kg of sodium molybdate, 0.5kg of water and 0.5kg of ethanol, and preparing passivation solution with the mass concentration of 0.5%; soaking a metal material in acetone, stirring and mixing, performing suction filtration, retaining a solid, washing, and drying to obtain a clean metal material; and mixing the clean metal material and the passivation solution, continuously reacting, washing, filtering and drying to obtain the pretreated metal material. A dispersion-modified metal material 10 was prepared using the pretreated metal material in place of the metal material 2 in preparation example 18.
Preparation examples 21 to 22
The difference from preparation example 20 is that: sodium molybdate, water and ethanol were used to prepare a passivation solution with a mass concentration of 0.1% and 0.2% instead of the passivation solution of preparation example 20, to prepare dispersion-modified metal materials 11 to 12.
Preparation example 23
Mixing 8kg of trimethylolpropane tris (3-mercaptopropionate) and 6kg of 3-aminopropyltriethoxysilane, placing in 10kg of tetrahydrofuran, heating at 50 ℃ for 12 hours for reaction, collecting reaction liquid, removing the solvent, and collecting the reactant;
and (3) stirring and mixing 0.5kg of 2-10 mu m nano hydroxyapatite and 2kg of reactants, placing the mixture under 200W for ultrasonic dispersion, heating the mixture at 50 ℃ for reaction for 12 hours after dispersion treatment, and washing and drying the mixture to obtain the product A.
250g of nano titanium dioxide and 0.75g of sodium hexametaphosphate are taken, stirred and mixed, and water is added to prepare 250g/L slurry. 2.5g of cerium carbonate is put into nitric acid, and is titrated by acid and alkali to prepare a cerium nitrate solution with the volume of 2.5 g/L. And (3) adding 200mL of slurry and 100mL of cerium nitrate solution, adjusting the temperature to 75 ℃, adjusting the pH to 9, cooling, performing suction filtration under reduced pressure, stopping when the pH =7, retaining a filter cake, drying, and crushing by using an airflow crusher to obtain the cerium-coated nano titanium dioxide.
And (3) taking 1kg of the product A and 2kg of the nano titanium dioxide coated with cerium, and stirring and mixing to obtain the modified material.
Examples
Examples 1 to 3
On one hand, the application provides a weather-resistant corrosion-resistant metal fluorocarbon coating, which comprises FEVE aqueous fluorocarbon emulsion, deionized water, pigment and filler, a defoaming agent, a thickening agent, a dispersing agent, a curing agent, a leveling agent, a metal material 4, a film forming aid, amino resin, acrylic acid modified resin, a water-retaining agent and a modified material, wherein the specific quality is shown in Table 2.
In the embodiment, the pigment filler is titanium dioxide, the defoaming agent is a BYK-066N type defoaming agent, the thickening agent is coconut oil fatty acid diethanolamide, the dispersing agent is a YA-803 type dispersing agent, the curing agent is adipic dihydrazide, the leveling agent is a WJ-820 type leveling agent, and the film-forming aid is HY-1800 type film-forming aid.
On the other hand, the application provides a preparation method of the weather-resistant corrosion-resistant metal fluorocarbon coating, which comprises the following steps: grinding: firstly, sequentially adding pigment filler, dispersant and deionized water into a grinding device, grinding and sieving by a 100-mesh sieve, and collecting to obtain a matrix coating; mixing: adding FEVE aqueous fluorocarbon emulsion, a defoaming agent, a thickening agent, a flatting agent and a modified material into the matrix coating, and stirring and mixing to obtain an aqueous fluorocarbon base material; dispersing: adding the curing agent into the aqueous fluorocarbon base material before spraying, and stirring and dispersing for 25min to prepare the corrosion-resistant strong-adhesion FEVE aqueous fluorocarbon coating 1-3.
Table 2 examples 1-3 coating compositions
Examples 4 to 6
The difference from example 2 is that: fluorocarbon coatings 4 to 6 were prepared using metal materials 1 to 3 instead of metal material 4 in example 2.
Examples 7 to 18
The difference from example 3 is that: fluorocarbon coatings 7 to 18 were prepared using dispersion-modified metal materials 1 to 12 in place of the metal material 4 in example 2.
Comparative example
Comparative example 1
The present comparative example is different from example 3 in that only the flake aluminum is used as the metal material in the present comparative example to prepare the fluorocarbon coating 19.
Comparative example 2
The comparative example differs from example 3 in that no modifying material was added in the comparative example and fluorocarbon coating 20 was prepared.
Performance test
(1) And (3) testing the glossiness: and (4) adopting the gloss and measuring the gloss of the fluorocarbon coating.
Preparing 3 sample plates on tinplate according to GB1727-79 general preparation method of paint film, and measuring under the conditions of constant temperature and constant humidity after the paint film is dried;
(2) Dispersibility: observing the state of the paint in the container;
(3) Adhesion force: detecting the adhesion of the fluorocarbon coating according to a method for measuring the adhesion of the coating of GB/T5210-1985 (pull open method);
(4) And (3) detecting the corrosion resistance: testing hydrochloric acid resistance (15 min), mortar resistance (24 h), nitric acid resistance (30 min), detergent resistance (72 h), window wash resistance (24 h) of fluorocarbon coating according to HG-T3793-2019 hot-melt fluororesin (PVDF) coating (solvent type)
TABLE 3 Performance test
In examples 1 to 18, after 15min of hydrochloric acid resistance treatment, no abnormality was observed, after 24h of mortar resistance treatment, after 72h of detergent resistance treatment, no abnormality was observed, and after 24h of window wash resistance, no abnormality was observed. That is, examples 1-28 all have better hydrochloric acid resistance, mortar resistance, nitric acid resistance, detergent resistance, and window cleaning resistance.
The comparison of the performance tests in combination with table 3 can find that:
(1) A comparison of examples 1-3, examples 4-6 and comparative examples 1-2 shows that: the gloss, the dispersibility, the corrosion resistance and the adhesion of the fluorocarbon coating prepared in the examples 1 to 6 are improved, which shows that the scattering of the fluorocarbon coating is increased by adopting the cooperation of the flake aluminum and the porous aluminum microspheres, so that the gloss of the fluorocarbon coating is slightly reduced, but the conventional use is not influenced. And the suspension dispersion effect of the metal material is improved by the addition of the porous aluminum microspheres through the ball effect and the porous structure. The ceramic hollow sphere is used as a reinforcement, so that a stable hollow structure and strength are obtained in the porous aluminum microsphere, and the suspension dispersion effect of the metal material is maintained. As can be seen from table 3, the fluorocarbon coatings prepared in example 2 and example 5 have better properties such as adhesion, and the components are more suitable in example 2, and the sintering temperature is suitable in example 5.
(2) A comparison of example 7, examples 8 to 9 and example 2 shows that: the gloss, the dispersibility, the adhesion and the corrosion resistance of the fluorocarbon coating prepared in the embodiments 7 to 9 are improved, which shows that the application adopts the triethanolamine and the silane coupling agent to cooperate as the dispersing agent, the triethanolamine is electrostatically adsorbed on the surface of the metal material to form the coating layer with-OH groups, so that the silane coupling agent is coupled and grafted on the surface of the metal material to form the protective layer, and the corrosion resistance of the fluorocarbon coating is improved.
(3) A comparison of examples 10 to 12 with example 2 shows that: the gloss, the dispersibility, the adhesion and the corrosion resistance of the fluorocarbon coating prepared in the embodiments 10 to 12 are improved, which indicates that the dopamine and the silane coupling agent are adopted as the dispersant, and the dopamine is self-assembled and deposited on the metal surface to form an adsorption film, so that the adhesion of the fluorocarbon coating is improved. Hydrophilic groups are introduced on the surface of the metal material through the silane coupling agent, so that the metal material can be uniformly dispersed in the fluorocarbon coating, and the fluorocarbon coating can obtain uniform adhesive force. As can be seen from table 3, the fluorocarbon coating prepared in example 11 has good properties such as adhesion, which indicates that the ratio of dopamine and silane coupling agent in example 11 is suitable.
(4) A comparison of examples 13 to 15 with example 2 shows that: the gloss, the dispersibility, the corrosion resistance and the adhesion of the fluorocarbon coating prepared in the examples 10 to 12 are improved, which shows that the silicon gel and the silane coupling agent are adopted as the dispersing agent, and the Si-O-Al bond is formed on the surface of the metal material in the hydrolysis, polycondensation and bonding modes, that is, the organic/inorganic hybrid coating layer is formed on the metal material, so that the metal material not only has a compact and uniform protective layer, but also can maintain the gloss of the metal material, and the corrosion resistance and the gloss of the fluorocarbon coating are improved. As can be seen from table 3, the fluorocarbon coating prepared in example 14 has better properties such as adhesion, and the mixture ratio of the silicone gel and the silane coupling agent in example 11 is more suitable.
(5) A comparison of examples 16 to 18 with example 2 shows that: the gloss, the dispersibility, the corrosion resistance effect and the adhesion of the fluorocarbon coating prepared in the examples 10 to 12 are improved, which shows that the metal material is pretreated in the application, a passivation layer is formed on the surface of the metal material, the bonding strength of the metal material and the dispersant is enhanced, and the corrosion resistance effect of the fluorocarbon coating is improved. As can be seen from table 3, the fluorocarbon coating prepared in example 11 has better properties such as adhesion, and the concentration of the passivation solution in example 17 is more suitable.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The weather-resistant corrosion-resistant metal fluorocarbon coating is characterized by comprising the following substances in parts by weight:
50-60 parts of FEVE aqueous fluorocarbon emulsion;
10-30 parts of deionized water;
3-15 parts of pigment and filler;
0.5-2.0 parts of defoaming agent;
0.5-1.0 part of thickening agent;
0.2-1.0 part of dispersant;
0.5-2.0 parts of curing agent;
0.2-0.5 part of leveling agent;
3-8 parts of a metal material;
2.6-7.0 parts of a film-forming additive;
1.0-2.5 parts of amino resin;
5.2-11.0 parts of acrylic modified resin;
1.0-2.5 parts of a water-retaining agent;
3-5 parts of a modified material;
the modified material comprises a nano hydroxyapatite-hyperbranched modified composite material and nano titanium dioxide wrapping cerium, and the particle diameter of the nano hydroxyapatite is 2-100 mu m;
the metal material comprises flaky aluminum powder and porous aluminum microspheres.
2. The weather-resistant corrosion-resistant metal fluorocarbon coating according to claim 1, wherein the preparation method of the porous aluminum microspheres comprises the following steps: and (3) mixing the ceramic hollow spheres and aluminum alloy powder at equal intervals, filling the intervals of the hollow spheres with the aluminum alloy powder, compacting, sintering in vacuum, cooling, and grinding to obtain the porous aluminum microspheres.
3. The weather-resistant corrosion-resistant metal fluorocarbon coating according to claim 2, characterized in that: the sintering temperature in the vacuum sintering is 620-680 ℃.
4. The weather-resistant and corrosion-resistant metal fluorocarbon coating according to claim 1, characterized in that: the metal material is a metal material which is dispersed and modified by a dispersant, and the dispersant comprises a silane coupling agent.
5. The weather and corrosion resistant metallic fluorocarbon coating of claim 4, wherein: the dispersant also comprises any one of triethanolamine, dopamine and silica gel.
6. The weather and corrosion resistant metallic fluorocarbon coating of claim 5, wherein: the dispersing agent comprises a silane coupling agent and silica gel, and the dispersion modification comprises the following steps: taking the metal material, anhydrous ethanol, tetraethoxysilane, silane coupling agent, water and ammonia water according to a mass ratio of 2.
7. The weather and corrosion resistant metal fluorocarbon coating according to claim 6, wherein said metal material is pretreated before being mixed with absolute ethanol, said pretreatment comprising the steps of: soaking a metal material in acetone, stirring and mixing, performing suction filtration, retaining a solid, washing, and drying to obtain a clean metal material; and mixing a clean metal material with a passivation solution, continuously reacting, washing, filtering and drying to obtain the pretreated metal material, wherein the passivation solution comprises sodium molybdate, water and ethanol, and the mass concentration of the passivation solution is 0.05-0.2%.
8. The weather and corrosion resistant metallic fluorocarbon coating of claim 5, wherein: the mass ratio of the dopamine to the metal material is 3-5.
9. The method for preparing weather and corrosion resistant metal fluorocarbon coating according to any one of claims 1 to 8, characterized by comprising the following steps:
s1, grinding: firstly, sequentially adding pigment, filler, metal material, dispersant and deionized water into a grinding device, grinding and sieving, and collecting to obtain a matrix coating;
s2, mixing: adding FEVE aqueous fluorocarbon emulsion, a defoaming agent, a thickening agent, a flatting agent and a modified material into the matrix coating, and stirring and mixing to obtain an aqueous fluorocarbon base material;
s3, dispersing: before spraying, the curing agent is added into the aqueous fluorocarbon base material, and stirring and dispersing treatment are carried out to obtain the weather-resistant fluorocarbon coating.
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| CN116606558B (en) * | 2023-05-11 | 2023-10-13 | 衡水澳德彩建筑装饰材料有限公司 | Preparation method of nano pigment for terrace |
| CN117126573A (en) * | 2023-10-25 | 2023-11-28 | 江苏新福乐威涂料有限公司 | Anti-fouling wear-resistant nano fluorocarbon coating and preparation method thereof |
| CN117126573B (en) * | 2023-10-25 | 2023-12-26 | 江苏新福乐威涂料有限公司 | Anti-fouling wear-resistant nano fluorocarbon coating and preparation method thereof |
| CN117165135A (en) * | 2023-11-02 | 2023-12-05 | 江苏新福乐威涂料有限公司 | Preparation method of anti-corrosion and anti-scale fluorocarbon coating material |
| CN117165135B (en) * | 2023-11-02 | 2024-01-02 | 江苏新福乐威涂料有限公司 | Preparation method of anti-corrosion and anti-scale fluorocarbon coating material |
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