CN117363075A - Automobile hub coating and preparation method and application thereof - Google Patents
Automobile hub coating and preparation method and application thereof Download PDFInfo
- Publication number
- CN117363075A CN117363075A CN202311427899.0A CN202311427899A CN117363075A CN 117363075 A CN117363075 A CN 117363075A CN 202311427899 A CN202311427899 A CN 202311427899A CN 117363075 A CN117363075 A CN 117363075A
- Authority
- CN
- China
- Prior art keywords
- coating
- aqueous
- layer
- hub
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 143
- 239000011248 coating agent Substances 0.000 title claims abstract description 138
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000010410 layer Substances 0.000 claims abstract description 133
- 239000003973 paint Substances 0.000 claims abstract description 104
- 239000000843 powder Substances 0.000 claims abstract description 90
- 239000011247 coating layer Substances 0.000 claims abstract description 38
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 35
- 229920000728 polyester Polymers 0.000 claims abstract description 33
- 239000004593 Epoxy Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 104
- 239000006185 dispersion Substances 0.000 claims description 79
- 239000003094 microcapsule Substances 0.000 claims description 68
- 239000004925 Acrylic resin Substances 0.000 claims description 61
- 229920000178 Acrylic resin Polymers 0.000 claims description 61
- 239000012948 isocyanate Substances 0.000 claims description 61
- 150000002513 isocyanates Chemical class 0.000 claims description 61
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 48
- 239000008367 deionised water Substances 0.000 claims description 40
- 229910021641 deionized water Inorganic materials 0.000 claims description 40
- 229920001225 polyester resin Polymers 0.000 claims description 31
- 239000004645 polyester resin Substances 0.000 claims description 31
- 239000003945 anionic surfactant Substances 0.000 claims description 29
- 239000003795 chemical substances by application Substances 0.000 claims description 25
- 239000007787 solid Substances 0.000 claims description 24
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 20
- 239000005543 nano-size silicon particle Substances 0.000 claims description 20
- 235000012239 silicon dioxide Nutrition 0.000 claims description 20
- 239000002562 thickening agent Substances 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 19
- -1 alkoxy silane Chemical compound 0.000 claims description 18
- 229910000077 silane Inorganic materials 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 17
- 239000011162 core material Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 239000002103 nanocoating Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 150000001282 organosilanes Chemical class 0.000 claims description 10
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002518 antifoaming agent Substances 0.000 claims description 9
- 239000006184 cosolvent Substances 0.000 claims description 9
- 239000013530 defoamer Substances 0.000 claims description 9
- 239000000049 pigment Substances 0.000 claims description 9
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- 238000009736 wetting Methods 0.000 claims description 8
- 239000000080 wetting agent Substances 0.000 claims description 8
- 239000002270 dispersing agent Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 5
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 claims description 5
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 17
- 230000007797 corrosion Effects 0.000 abstract description 13
- 238000005524 ceramic coating Methods 0.000 abstract description 11
- 239000005002 finish coating Substances 0.000 abstract description 11
- 230000007547 defect Effects 0.000 abstract description 10
- 230000032683 aging Effects 0.000 abstract description 7
- 239000002253 acid Substances 0.000 abstract description 6
- 239000003513 alkali Substances 0.000 abstract description 6
- 238000004132 cross linking Methods 0.000 description 15
- 238000002156 mixing Methods 0.000 description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- 238000005336 cracking Methods 0.000 description 12
- 150000007942 carboxylates Chemical class 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
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- 230000009257 reactivity Effects 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical group CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 4
- 239000004721 Polyphenylene oxide Substances 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 229920000570 polyether Polymers 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 235000010215 titanium dioxide Nutrition 0.000 description 4
- 239000002966 varnish Substances 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 241000258937 Hemiptera Species 0.000 description 3
- 241001440206 Homodes Species 0.000 description 3
- BLTMUNBIKGMTNQ-UHFFFAOYSA-N [SiH3]N.CO[Si](OC)(OC)CCCN Chemical compound [SiH3]N.CO[Si](OC)(OC)CCCN BLTMUNBIKGMTNQ-UHFFFAOYSA-N 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 1
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-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
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 1
- 238000012696 Interfacial polycondensation Methods 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 125000005376 alkyl siloxane group Chemical group 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000007764 o/w emulsion Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012643 polycondensation polymerization Methods 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/586—No clear coat specified each layer being cured, at least partially, separately
-
- 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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
-
- 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
- C09D175/06—Polyurethanes from polyesters
-
- 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
- C09D5/03—Powdery 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/20—Metallic substrate based on light metals
- B05D2202/25—Metallic substrate based on light metals based on Al
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to an automobile hub coating, and a preparation method and application thereof. The automobile hub coating comprises a powder coating layer, a primer layer and a finish coating layer which are sequentially arranged on the surface of an automobile hub. In the automobile hub coating, the surface of the automobile hub is coated with the epoxy polyester powder coating to form the powder coating layer, so that the automobile hub coating can cover the rough surface of the automobile aluminum alloy hub and provide anti-corrosion performance, and the requirements of the automobile aluminum alloy hub on corrosion resistance and fur covering defect are met; and then respectively coating primer and finish paint on the surface of the powder coating layer to respectively form the primer layer and the finish paint layer, wherein the primer layer and the finish paint layer can improve the covering and corrosion resistance, can achieve various advantages of the traditional ceramic coating, and have the advantages of excellent ageing resistance, high hardness, wear resistance, scratch resistance, acid and alkali resistance and the like.
Description
Technical Field
The invention relates to the technical field of automobile hub coatings, in particular to an automobile hub coating and a preparation method and application thereof.
Background
Currently, the surface coating of the automobile hub is basically an organic coating, and three coatings of base powder, colored paint, varnish or base powder, colored paint and transparent powder are usually used; wherein, the varnish is mainly acrylic amino baking varnish, and the transparent powder is mainly glycidyl methacrylate acrylic powder. Automobile hubs are exposed in outdoor environment for a long time, and various mediums such as dust, sand, rainwater and light insolation in the outdoor environment impact on the surface coating of the hubs, the coating structure of the existing automobile hubs is easy to reduce in color retention, easy to pollute dust, dan Jihen trace is obvious, abrasion resistance is reduced, and the service life and the attractiveness of the hubs are affected.
The nano water-based ceramic coating prepared by the sol-gel method has the advantages of aging resistance, high hardness, wear resistance, scratch resistance, acid and alkali resistance and the like, is used on the surface of an aluminum veneer relatively mature, and is also a function required by the existing automobile aluminum alloy hub coating, and if the nano water-based ceramic coating can be applied to the surface of an aluminum alloy hub, the defects in the prior art can be overcome.
However, the existing automobile aluminum alloy hub is mainly made of A356 series cast aluminum alloy, the surface roughness of the cast aluminum alloy hub is high, the surface has more pinholes, and the series aluminum alloy is easier to filiform corrosion compared with a building aluminum veneer. If the water-based ceramic paint is directly applied to the surface coating of the automobile aluminum alloy hub, the defect of the organic coating of the existing automobile aluminum alloy hub can be overcome, but the water-based ceramic paint cannot be sprayed too thick, if the water-based ceramic paint is too thick, the water-based ceramic paint is easy to crack, and the adhesive force is reduced. The A356 cast aluminum alloy has high roughness, uneven coating formed on the surface of the automobile hub due to the fact that too thick ceramic paint cannot be sprayed, meanwhile, corrosion is easy to occur to the A356 cast aluminum alloy due to the existence of elements such as iron silicon and the like, the ceramic paint is not thick enough to cover the uneven surface of the aluminum alloy, and the problems of unsatisfactory appearance, reduced adhesive force, insufficient long-term corrosion resistance and wear resistance and the like of the coating are easy to occur. Therefore, the simple application of the water-based ceramic paint to the surface of the automobile aluminum alloy hub has a plurality of defects.
Disclosure of Invention
Based on the above, the invention aims to provide a coating for an automobile hub, a preparation method and application thereof, and the automobile hub coating can not only cover the rough surface of an automobile aluminum alloy hub and provide anti-corrosion performance, but also achieve a plurality of advantages of the existing ceramic coating.
The invention adopts the following technical scheme:
an automobile hub coating comprises a powder coating layer, a primer layer and a finish coating layer which are sequentially arranged on the surface of an automobile hub;
the powder coating layer is formed by coating powder coating on the surface of an automobile hub; the powder coating is an epoxy polyester powder coating;
the primer layer is formed from a primer; the primer comprises the following components in percentage by mass: 20-30% of aqueous polyester resin; 5-10% of water-based acrylic resin; 5-15% of water-based blocked isocyanate; 0.1-2.5% of neutralizer; 0.1 to 0.5 percent of substrate wetting agent; 0.1 to 0.5 percent of leveling agent; 0.2-0.8% of defoaming agent; 0.1-1.0% of thickener; 2-6% of cosolvent; deionized water balance;
the finish paint layer is formed by finish paint; the finishing paint comprises the following components in percentage by mass: 85-95% of water-based modified inorganic nano coating, 5-8% of water-based organosilane dispersion liquid and the balance of deionized water;
Wherein:
the water-based modified inorganic nano coating comprises the following components in percentage by mass: 55-75% of aqueous nano modified dispersoid, 5-25% of pigment, 0.2-3% of wetting dispersant, 0.5-2% of flatting agent, 0.1-0.8% of defoamer, 0.1-0.9% of thickener and the balance of deionized water;
the aqueous nano modified dispersion comprises the following components in percentage by mass: 40-50% of nano silicon dioxide aqueous dispersion, 25-35% of alkoxy silane, 10-30% of aqueous polyester dispersion, 0.5-5% of anionic surfactant and the balance of deionized water;
the aqueous organosilane dispersion comprises the following components in percentage by mass: 45-65% of aminosilane, 0.5-5% of anionic surfactant and the balance of deionized water.
According to the automobile hub coating, the powder coating layer, the primer layer and the finish coating layer are arranged on the surface of the automobile hub, so that the requirements of corrosion resistance and fur covering defect of the automobile aluminum alloy hub are met, the covering and corrosion resistance can be improved, and a plurality of advantages of the ceramic coating are achieved. In the automobile hub coating, the epoxy polyester powder coating is coated on the surface of the automobile hub to form the powder coating layer, so that the automobile hub coating can cover the rough surface of the automobile aluminum alloy hub and provide anti-corrosion performance, and the requirements of the automobile aluminum alloy hub on anti-corrosion performance and fur covering defect are met; and then the primer layer and the finish layer which are respectively formed by the primer and the finish are respectively coated on the surface of the powder coating layer, so that the covering and corrosion resistance can be improved, various advantages of the existing ceramic coating can be achieved, and the ceramic coating has the advantages of excellent ageing resistance, high hardness, wear resistance, scratch resistance, acid and alkali resistance and the like. The primer layer plays a role of 'up-down', plays a key role in binding force of the finish paint layer and the powder paint layer, ensures the binding force among the powder paint layer, the primer layer and the finish paint layer, and can play roles of high wear resistance, high hardness, weather resistance and the like.
In the primer layer, water-based polyester resin, water-based acrylic resin and water-based closed isocyanate are taken as main bodies; the waterborne polyurethane resin has excellent binding force with the epoxy polyester powder coating in the powder coating layer, so that the binding force between the primer layer and the powder coating layer is improved; selecting the water-based closed isocyanate to be matched and crosslinked, so that the elasticity of the primer layer is moderate; in the curing range of the primer layer, the aqueous acrylic resin is more suitable than amino resin, and the aqueous acrylic resin plays roles of improving the binding force with the powder coating layer and the finishing layer respectively, enhancing the binding force between the aqueous polyester resin in the primer layer and the epoxy resin of the powder coating layer, and simultaneously, the aqueous acrylic resin can improve the reactivity in the primer component, enhance the reactivity between the aqueous polyester resin and the aqueous closed isocyanate, so that the elasticity of the primer layer is more moderate; in addition, the water-based blocked isocyanate in the primer layer can react with the hydroxyl in the finishing paint, and simultaneously the water-based polyester resin in the primer layer and the hydroxyl in the water-based acrylic acid dispersion can also participate in the reaction in the finishing paint, so that the binding force between the primer layer and the finishing paint layer is ensured, and the problems that the existing finishing paint mainly made of inorganic materials and containing a large amount of inorganic pigment and filler is difficult to ensure low binding force with a powder paint layer and poor long-acting performance under the condition of no primer layer of the organic coating are prevented. The aqueous acrylic resin in the primer and the aqueous polyester resin contain a large amount of active hydroxyl groups, can react with the aqueous closed isocyanate in the primer, and can also react with the alkoxy silane and the amino silane in the finish, so that the crosslinking between layers can be promoted while the crosslinking in the layers is realized, and the binding force of the internal components of the primer layer and the binding force between the finish and the primer layer are further improved.
In the finish paint layer, alkoxy silane is used as a precursor of reaction, nano silicon dioxide reinforcing phase, alkoxy silane monomer and nano silicon dioxide are mixed in a liquid phase state to form a stable and uniform transparent system, the mixed system is subjected to hydrolysis and self-polycondensation reaction in a water phase in the curing process, meanwhile, polycondensation reaction is carried out on a polycondensation product and nano silicon dioxide particles, components in the system are slowly polymerized to generate a large number of space network structures, and solvent moisture in the network structures is volatilized through heat treatment, so that the coating containing nano silicon dioxide particles is finally formed. Compared with the existing organic coating on the surface of the automobile aluminum alloy hub, the automobile hub coating provided by the invention has the advantages that the inorganic nano material is introduced into the finish paint, so that the wear resistance, weather resistance, hardness and the like of the coating are obviously improved, the low surface energy of the coating and the static eliminating capability of the inorganic material are improved, the coating can not adsorb pollutants in the atmosphere, the clean appearance is always maintained, and the defects of poor wear resistance, poor light and color retention and the like of the existing organic coating are overcome. The aqueous polyester dispersion in the finishing paint contains a large amount of active hydroxyl groups, so that the finishing paint can react with alkoxy silane and amino silane in the finishing paint, and can react with aqueous closed isocyanate in the primer, so that the crosslinking of the finishing paint layer and the primer layer can be promoted while the internal crosslinking of the finishing paint layer is promoted, the bonding force is further improved, the shrinkage stress of the aqueous polyester dispersion is reduced compared with that of a full inorganic coating, the risks of cracking after baking and the cracking of the coating after the baking of the coating are greatly reduced, and the hardness, wear resistance and other performances of the obtained coating are greatly improved compared with those of a pure organic coating.
According to the invention, the powder coating layer, the primer layer and the finish coating layer are sequentially formed on the surface of the automobile hub, so that the problems existing in the prior art that the water-based ceramic coating is directly applied to the surface of the automobile hub can be solved, the requirements of corrosion resistance and fur covering defect of the automobile hub can be met, the covering and corrosion resistance can be improved, and the automobile hub has the advantages of excellent ageing resistance, high hardness, wear resistance, scratch resistance, acid and alkali resistance and the like.
As an improvement of the above scheme, the aqueous nano modified dispersion further comprises the following components in percentage by mass: 5-8% of aqueous acrylic resin microcapsules and 5-8% of isocyanate microcapsules; the aqueous acrylic resin microcapsule comprises a first wall material and a first core material, wherein the first wall material comprises urea formaldehyde resin, and the first core material comprises aqueous acrylic resin; the isocyanate microcapsule comprises a second wall material and a second core material, wherein the second wall material comprises nano silicon dioxide, the second core material comprises isocyanate, and the isocyanate is aqueous isocyanate. According to the invention, the water-based acrylic resin microcapsules and the isocyanate microcapsules are added into the finish paint layer to ensure the binding force and long-term stability among the powder paint layer, the primer layer and the finish paint layer, in consideration of the risks of cracking of the automobile hub coating after baking and the later prolonged cracking of the coating along with the binding force and long-term effect of the finish paint layer and the primer layer. From the above, it is known that the aqueous acrylic resin in the primer layer can act to promote the bonding force between the powder coating layer and the primer layer, the aqueous acrylic resin in the primer layer can also react with the aqueous blocked isocyanate in the primer layer, and the aqueous acrylic resin in the primer layer can also react with the alkoxysilane and the aminosilane in the top coat, so that the aqueous acrylic resin in the primer layer can promote the crosslinking in the primer layer and also promote the crosslinking between the layers and promote the bonding force between the layers. The invention aims to reduce the risk of cracking of the coating after baking and prolonging the cracking of the coating with time in the later period, ensure the bonding force and long-acting performance between the finish paint layer and the primer layer, and the isocyanate microcapsule is added into the finish paint, so that nano silicon dioxide on the second wall material of the isocyanate microcapsule can participate in the reaction of hydrolysis polycondensation products of alkyl siloxane, a large amount of space network structures are further generated by polymerization in the finish paint layer, and the stability of the coating of nano silicon dioxide particles is further enhanced; in addition, the aqueous acrylic resin microcapsule is added into the finish paint, when the automobile hub coating is stressed and cracked, the first wall material of the aqueous acrylic resin microcapsule and the second wall material of the isocyanate microcapsule are stressed and cracked, the aqueous acrylic resin is released by the aqueous acrylic resin microcapsule, the isocyanate microcapsule can release isocyanate through the pore structure of nano silicon dioxide or the self-cracking of the microcapsule, and the isocyanate in the isocyanate microcapsule and the aqueous acrylic resin released by the aqueous acrylic resin microcapsule undergo a crosslinking reaction, so that the crack is re-bonded, the self-repairing of the automobile hub coating is realized, the service life of the automobile hub coating is greatly prolonged, and the bonding force and long-term stability among the powder coating layer, the primer layer and the finish paint layer are ensured. In addition, when each crack, the water-based acrylic resin released by the water-based acrylic resin microcapsule can react with the alkoxy silane and the amino silane in the finish paint, and can react with the water-based closed isocyanate in the primer, so that the cracks are further bonded, the bonding force with the primer layer is further enhanced, the risk of cracking of the coating is reduced, and the hardness, the wear resistance and other performances of the obtained finish paint layer are greatly improved. The isocyanate released by the isocyanate microcapsule can react with aqueous polyester dispersion in the finish paint to further bond cracks and strengthen bonding fastness in the finish paint layer. In some preferred embodiments, the first core material of the aqueous acrylic resin microcapsule further comprises a crosslinking accelerator, such as a photoinitiator or other crosslinking accelerator, by which the reaction of the aqueous acrylic resin released by the rupture of the aqueous acrylic resin microcapsule with other components is accelerated to increase the rate of adhesion, further reducing the risk of coating cracking.
For convenience of explanation of the aqueous acrylic resin microcapsule and the isocyanate microcapsule of the present invention, the aqueous acrylic resin microcapsule and the isocyanate microcapsule of the present invention can be prepared by existing microcapsule preparation methods, such as a template method, an interfacial polycondensation method, an in-situ polymerization method, and the like. The following is merely illustrative of a preferred preparation method, and a person skilled in the art can perform the corresponding preparation according to the existing common general knowledge, and will not be described in detail herein.
As a preferred preparation method of the aqueous acrylic resin microcapsule, the method comprises the following steps: uniformly mixing and stirring a first core material (containing water-based acrylic resin) and an emulsifier to obtain a first core material emulsion; preparing urea-formaldehyde resin solution, dropwise adding the urea-formaldehyde resin solution into the first core material emulsion, regulating the pH to 2.5-3, heating to 65-75 ℃ for reaction, standing, washing and drying to obtain the aqueous acrylic resin microcapsule.
As a preferred method for preparing the isocyanate microcapsules, the following steps are included: taking nano silicon dioxide aqueous dispersion liquid as a water phase; taking an organic mixed solution containing a second core material (containing aqueous isocyanate) as an oil phase; mixing the oil phase with the water phase and emulsifying to prepare an oil-in-water emulsion; adding the cross-linking agent into the prepared emulsion to react, standing, filtering, washing and drying to obtain the isocyanate microcapsule.
As a preferable scheme, in the primer, the water-based polyester resin is water-soluble polyester resin, the solid content is 60-80%, and the hydroxyl content is 90-150mgKOH/g, wherein the hydroxyl content is converted into 100% of resin solid content; in the finishing coat, the solid content of the aqueous polyester dispersion is 30-50%, the hydroxyl content is 60-120mgKOH/g, wherein the hydroxyl content is converted into 100% resin solid content, and the pH value is 7.0-9.0. In common knowledge, the aqueous polyester resin mainly includes several types of water-soluble polyester resins, aqueous polyester dispersions, aqueous polyester emulsions. According to the invention, the water-soluble polyester resin is adopted in the primer, and contains a certain cosolvent, so that the surface of the powder coating layer is relatively easy to infiltrate, and meanwhile, an excessively strong wetting and leveling agent is not required to be added in the primer, thereby being beneficial to coating the post-finishing paint on the sprayed primer; the present invention uses an aqueous polyester dispersion in the topcoat, which type of resin has relatively good miscibility with the subject components in the topcoat. The invention designs the hydroxyl group content of the aqueous polyester resin in the primer to be 90-150mgKOH/g, so that the binding force with the powder paint layer is ensured, the crosslinking density in the primer layer is ensured, and the binding force of the primer layer with the finishing paint layer is enhanced, in consideration of the binding force of the aqueous polyester resin in the primer with the epoxy polyester powder paint, the reactivity with the aqueous blocked isocyanate in the primer and the reactivity with components in the finishing paint. In the finish paint, the hydroxyl content of the aqueous polyester dispersion is 60-120mgKOH/g. In the method, the hydroxyl content of the aqueous polyester dispersion in the finish paint is designed to be 60-120mgKOH/g in consideration of the crosslinking density of the aqueous polyester dispersion in the finish paint, the reaction of the aqueous polyester dispersion with the alkoxysilane and the aminosilane in the finish paint and the reaction of the aqueous blocked isocyanate in the primer, so that the risks of cracking after baking and the later cracking of the coating with time are reduced, the performances of coating hardness, wear resistance and the like are greatly improved, and the binding force with the primer layer is improved. Preferably, the water-soluble polyester resin is homoptera 1PB83Y; the aqueous polyester dispersion is homoptera 3PB811W.
As a preferable scheme, the solid content of the nano silicon dioxide aqueous dispersion liquid is 25-35%, the average particle diameter is 10-110nm, and the pH value is 7-10. In order to facilitate the polycondensation reaction of the condensation polymerization product of the alkoxysilane and the nano silicon dioxide particles in the finish paint, a nano silicon dioxide aqueous dispersion liquid with the solid content of 25-35%, the average particle diameter of 10-110nm and the pH value of 7-10 is selected, so that the space network structure generated by the system polymerization and the finish paint layer formed by the nano silicon dioxide particles have excellent performances of aging resistance, high hardness, wear resistance, scratch resistance, acid and alkali resistance and the like.
As a preferred embodiment, the alkoxysilane is: one or two of methyltrimethoxysilane and methyltriethoxysilane are mixed. Alkoxysilanes of the above type are employed in order to be able to hydrolyze and to carry out polycondensation reactions after hydrolysis, so that the polycondensation products can be repolymerized with nanosilica particles.
Further, the anionic surfactant is at least one of a carboxylate type, a sulfonate type, a sulfate (ester) salt type, and a phosphate (ester) salt type.
Further, the pigment is at least one of titanium white, copper-chromium black, cobalt blue, manganese-iron black and metallic pigment.
Further, the leveling agent is a polyacrylate solution (e.g., BYK-346 may be used); the defoamer is at least one of a silicone defoamer or a mixture of hydrophobic particles and a foam breaking polymer (e.g., BYK-028 may be used); the thickener is at least one of a pseudoplastic polyurethane thickener or a newtonian polyurethane thickener (e.g., borchi Gel0620 or Borchi Gel 0434 may be used).
Further, the aminosilane is: at least one of 3-aminopropyl trimethoxysilane, 3-aminopropyl triethoxysilane, and N- (2-aminoethyl) -3-aminopropyl trimethoxysilane.
Further, the water-based acrylic resin is water-soluble acrylic resin, the solid content is 55-75%, and the hydroxyl content is 60-90mgKOH/g, wherein the hydroxyl content is converted into 100% of the resin solid content. The invention designs the water-based acrylic resin which is water-soluble acrylic resin with the solid content of 55-75% and the hydroxyl content of 60-90mgKOH/g, considers the reactivity and the crosslinking density in the components in the primer and the binding force between the water-based polyester resin in the primer layer and the epoxy resin powder coating of the powder coating layer, improves the binding force between the primer layer and the powder coating layer, improves the crosslinking density in the primer layer and improves the binding force between the primer layer and the finish coating layer. Preferably, the water-soluble acrylic resin is homoptera 1AB911Y.
Further, the aqueous blocked isocyanate is of the HDI type, the solid content is 65-85%, the NCO content is 8-11%, and the deblocking temperature is 100-120 ℃. The water-based closed isocyanate can facilitate the crosslinking of the inner components of the primer layer and the crosslinking of the components of the finish layer to form a layer structure with strong binding force. Preferably, the aqueous closed isocyanate is selected from the group consisting of Huiyu HY112.
Further, the neutralizing agent is N, N-dimethylethanolamine, the leveling agent is a polyacrylate solution, the substrate wetting agent is a polyether modified siloxane solution, the defoaming agent is at least one of an organosilicon defoaming agent or a mixture of hydrophobic particles and a foam breaking polymer, and the thickening agent is at least one of a pseudoplastic polyurethane thickening agent or a Newton polyurethane thickening agent.
Further, the cosolvent is a mixture of an alcohol ether solvent and an alcohol solvent, wherein the alcohol ether solvent is at least one of ethylene glycol butyl ether, diethylene glycol butyl ether or propylene glycol methyl ether, and the alcohol solvent is at least one of ethanol, isopropanol and n-butanol.
The invention also provides a preparation method of the automobile hub coating, which comprises the following steps:
S1: spraying the powder coating on the surface of an automobile hub, and curing at 160-200 ℃ to form a powder coating layer, wherein the thickness of the powder coating layer is 50-90 mu m;
s2: spraying a primer and a finish paint on the surface of the powder paint layer obtained in the step S1, and curing at 120-130 ℃ to form a primer layer and a finish paint layer respectively, wherein the thickness of the primer layer is 3-8 mu m, and the thickness of the finish paint layer is 15-30 mu m; thereby obtaining the automobile hub coating.
In the preparation method of the automobile hub coating, powder coating is sprayed on the surface of an automobile hub and is cured at 160-200 ℃ according to the curing requirement of the powder coating, the thickness of the powder coating layer is controlled to be 50-90 mu m, if the defect and the corrosion resistance requirement of a blank cannot be covered by the excessively low thickness, the excessively high thickness easily causes the cracking defect of a paint film due to the difference of shrinkage rate of the whole coating along with the time extension; and then, coating a primer and a finish paint on the surface of the powder paint layer obtained in the step S1 in a spraying mode, and curing at 120-130 ℃ to obtain a primer layer and a finish paint layer respectively by one-time curing of the primer and the finish paint, thereby obtaining the automobile hub coating. Wherein the thickness of the primer layer is 3-8 mu m, if the thickness of the primer layer is too high, the hardness and physical and chemical properties of the whole coating are easily reduced, and if the thickness of the primer layer is too low, the adhesion is not improved; the thickness of the finish paint layer is 15-30 mu m, if the thickness of the finish paint layer is too high, the shrinkage stress of a paint film is too large, the coating is easy to crack, and if the thickness of the finish paint layer is too low, the performances such as wear resistance and the like do not reach ideal states.
Further, S1, before powder coating is sprayed, a chromium-free pretreatment is performed on an automobile hub (automobile aluminum alloy hub) after casting and processing.
As a preferred method of preparing the primer, it comprises the steps of:
(1) Adding water-based polyester resin, water-based acrylic resin, cosolvent and part of deionized water into a container in advance, slowly dripping and uniformly dispersing a neutralizing agent in a dispersing state;
(2) Adding and uniformly dispersing a substrate wetting agent, a leveling agent, a defoaming agent and a thickening agent in a dispersing state;
(3) Adding water-based closed isocyanate and the balance deionized water, and uniformly dispersing;
(4) And regulating the pH value to 8.0-9.5 by using a neutralizing agent, and uniformly mixing to obtain the primer.
As a preferred preparation method of the finishing paint, the method comprises the following steps:
mixing one or more kinds of alkoxy silane uniformly, adding an anionic surfactant, and stirring until the mixture is uniformly dispersed into the alkoxy silane to form semitransparent mixed liquid a; adding the aqueous polyester resin dispersion and deionized water into the aqueous dispersion of the nano silicon dioxide, and uniformly stirring to obtain a mixed liquid b; slowly dripping the mixed liquid a into the mixed liquid b for 15-25min, heating to 40-65 ℃, reacting at constant temperature for 1-5h, stopping heating, and cooling to normal temperature to obtain a water-based nano modified dispersion c;
Mixing the water-based nano modified dispersion c prepared in the step (I) with pigment, wetting dispersant, defoamer, flatting agent and partial deionized water, performing high-speed dispersion by using a high-speed dispersing machine for 10-30min, grinding by using a sand mill, controlling the temperature of a grinding base material within 63 ℃, adding a thickening agent and the rest deionized water after reaching the fineness requirement, and uniformly dispersing to obtain the water-based modified inorganic nano coating;
(III) mixing one or more anionic surfactants with water, uniformly mixing, then slowly dripping aminosilane into an anionic surfactant aqueous solution for 15-25min, continuously dispersing for 1-2h after dripping, and cooling to normal temperature to obtain aqueous organosilicon dispersion;
and (IV) mixing the aqueous modified inorganic nano coating obtained in the step (II) with the aqueous organosilicon dispersion liquid obtained in the step (III), and dispersing at a low speed for 20-30min after mixing to obtain the finish paint.
Further, when the aqueous acrylic resin microcapsules and the isocyanate microcapsules are also employed in the topcoat, the aqueous acrylic resin microcapsules and the isocyanate microcapsules are: in the step (I), adding the aqueous polyester resin dispersion, the aqueous polyester resin microcapsule, the isocyanate microcapsule and the deionized water into the aqueous dispersion of the nano silicon dioxide, and uniformly stirring to obtain the mixed liquid b.
The invention also provides application of the automobile hub coating on the surface of the automobile aluminum alloy hub.
Further, the automobile aluminum alloy hub is an A356 series cast automobile aluminum alloy hub.
Because the A356 cast aluminum alloy casting surface has high roughness, uneven ceramic coating can not be sprayed on the surface of the casting surface, and meanwhile, the A356 cast aluminum alloy is easy to corrode due to the existence of elements such as iron and silicon, and the thickness of the ceramic coating is insufficient to cover the uneven surface of the aluminum alloy, so that the problems of poor corrosion resistance and the like are easy to occur. The automobile hub coating provided by the invention is used for A356 series cast automobile aluminum alloy hubs, can cover rough surfaces and provide corrosion resistance, and achieves various advantages of ceramic coatings, such as ageing resistance, high hardness, wear resistance, scratch resistance, acid and alkali resistance and the like.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments and details of the present description may be varied or modified from various points of view and applications without departing from the spirit of the invention.
The invention is further illustrated below in connection with examples which are provided solely for the purpose of illustration and are not intended to limit the scope of the invention. The experimental procedures in the examples below, without specific details, are generally performed under conditions conventional in the art or recommended by the manufacturer; the raw materials, reagents and the like used, unless otherwise specified, are those commercially available from conventional markets and the like. Any insubstantial changes and substitutions made by those skilled in the art in light of the above teachings are intended to be within the scope of the invention as claimed. In examples 4-6, both the aqueous acrylic microcapsules and the isocyanate microcapsules were existing products, and the aqueous acrylic microcapsules used were microcapsules of reference CN 107715811B; the isocyanate microcapsule used was that of CN 109535315B. Those skilled in the art can select other types of water-based acrylic resin microcapsules containing urea-formaldehyde resin in the wall material and water-based acrylic resin in the core material, and isocyanate microcapsules containing nano-silica in the wall material and isocyanate in the core material, as required.
For convenience of description, the following 5 tables are used to express the proportions and product properties of 6 embodiments, which are respectively the raw material components and mass percentages of the primer and the top coat in the automobile hub coating of examples 1-6; please understand the present invention in conjunction with tables 1-5, and the contents of specific examples 1-6.
Example 1
The embodiment provides an automobile hub coating, which comprises a powder coating layer, a primer layer and a finish coating layer which are sequentially arranged on the surface of an automobile hub.
The powder coating layer is formed by coating powder coating on the surface of an automobile hub; the powder coating is an epoxy polyester powder coating.
The primer layer is formed from a primer; the primer comprises the following components in percentage by mass:
30% of an aqueous polyester resin (water-soluble polyester resin, homopter 1PB 83Y);
8% of aqueous acrylic resin (water-soluble acrylic resin, homode 1AB 911Y);
10% of aqueous blocked isocyanate (Huiyu HY 112);
1% of a neutralizing agent (N, N-dimethylethanolamine);
0.3% of a substrate wetting agent (polyether modified siloxane solution);
leveling agent (BYK-346) 0.3%
0.5% of defoamer (BYK-011);
0.8% of thickener (Borchi Gel 0620);
5% of a cosolvent (50% by weight of ethylene glycol butyl ether and 50% by weight of ethanol mixture);
and the balance of deionized water.
The finish paint layer is formed by a finish paint, and the finish paint comprises the following components in percentage by mass:
90% of water-based modified inorganic nano paint;
7% of an aqueous organosilane dispersion;
and the balance of deionized water.
Wherein:
the aqueous organosilane dispersion comprises the following components in percentage by mass:
Aminosilane (3-aminopropyl trimethoxysilane) 65%;
anionic surfactant (carboxylate type anionic surfactant) 5%,
and the balance of deionized water.
The water-based modified inorganic nano coating comprises the following components in percentage by mass:
65% of aqueous nano modified dispersion;
pigment (titanium white) 15%;
wetting dispersant 2%;
1% of leveling agent (BYK-346);
0.5% of defoaming agent (BYK-028);
0.5% of a thickener (Borchi Gel 0620);
and the balance of deionized water.
Wherein: the aqueous nano modified dispersion comprises the following components in percentage by mass:
50% of a nano-silica aqueous dispersion (solid content: 30%, average particle diameter: 80nm, pH: 8);
30% of alkoxy silane (methyltrimethoxy silane),
10% of an aqueous polyester dispersion (Hede 3PB 811W),
anionic surfactant (carboxylate type anionic surfactant) 3%,
and the balance of deionized water.
The embodiment also provides a preparation method of the automobile hub coating, which comprises the following steps:
the invention also provides a preparation method of the automobile hub coating, which comprises the following steps:
s1: spraying the powder coating on the surface of an automobile hub, and curing at 160-200 ℃ to form a powder coating layer, wherein the thickness of the powder coating layer is 80 mu m;
S2: spraying a primer and a finish paint on the surface of the powder paint layer obtained in the step S1, and curing at 120-130 ℃ to form a primer layer and a finish paint layer respectively, wherein the thickness of the primer layer is 8 mu m, and the thickness of the finish paint layer is 25 mu m; thereby obtaining the automobile hub coating.
Wherein: the preparation method of the primer comprises the following steps:
(1) Adding water-based polyester resin, water-based acrylic resin, cosolvent and part of deionized water into a container in advance according to the proportion, slowly dripping and uniformly dispersing a neutralizing agent in a dispersing state;
(2) Adding and uniformly dispersing a substrate wetting agent, a leveling agent, a defoaming agent and a thickening agent in a dispersing state;
(3) Adding water-based closed isocyanate and the balance deionized water, and uniformly dispersing;
(4) And regulating the pH value to 8.0-9.5 by using a neutralizing agent, and uniformly mixing to obtain the primer.
The preparation method of the finishing paint comprises the following steps:
adding an alkoxy silane into an anionic surfactant according to a proportion, and stirring until the alkoxy silane is uniformly dispersed into the mixture to form a semitransparent mixed liquid a; adding the aqueous polyester resin dispersion and deionized water into the aqueous dispersion of the nano silicon dioxide, and uniformly stirring to obtain a mixed liquid b; slowly dripping the mixed liquid a into the mixed liquid b for 25min, heating to 40-65 ℃, reacting at constant temperature for 4h, stopping heating, and cooling to normal temperature to obtain a water-based nano modified dispersion c;
Mixing the water-based nano modified dispersion c prepared in the step (I) with pigment, wetting dispersant, defoamer, flatting agent and partial deionized water, performing high-speed dispersion by using a high-speed dispersing machine for 10-30min, grinding by using a sand mill, controlling the temperature of a grinding base material within 63 ℃, adding a thickening agent and the rest deionized water after reaching the fineness requirement, and uniformly dispersing to obtain the water-based modified inorganic nano coating;
(III) mixing the anionic surfactant with water, after uniformly mixing, slowly dripping the aminosilane into an anionic surfactant water solution for 20min, continuously dispersing for 2h after dripping, and cooling to normal temperature to obtain an aqueous organosilicon dispersion liquid;
and (IV) mixing the aqueous modified inorganic nano coating obtained in the step (II) with the aqueous organosilicon dispersion liquid obtained in the step (III), and dispersing for 30min at a low speed after mixing to obtain the finish paint.
Example 2
The embodiment provides an automobile hub coating, which comprises a powder coating layer, a primer layer and a finish coating layer which are sequentially arranged on the surface of an automobile hub.
The powder coating layer is formed by coating powder coating on the surface of an automobile hub; the powder coating is an epoxy polyester powder coating.
The primer layer is formed from a primer; the primer comprises the following components in percentage by mass:
25% of aqueous polyester resin (water-soluble polyester resin, homopter 1PB 83Y);
5% of aqueous acrylic resin (water-soluble acrylic resin, homode 1AB 911Y);
15% of water-based blocked isocyanate (Huiyu HY 112);
1% of a neutralizing agent (N, N-dimethylethanolamine);
0.3% of a substrate wetting agent (polyether modified siloxane solution);
leveling agent (BYK-346) 0.3%
0.5% of defoamer (BYK-011);
0.8% of thickener (Borchi Gel 0620);
5% of a cosolvent (50% by weight of ethylene glycol butyl ether and 50% by weight of ethanol mixture);
and the balance of deionized water.
The finish paint layer is formed by a finish paint, and the finish paint comprises the following components in percentage by mass:
85% of water-based modified inorganic nano paint;
8% of an aqueous organosilane dispersion;
and the balance of deionized water.
Wherein:
the aqueous organosilane dispersion comprises the following components in percentage by mass:
60% of aminosilane (3-aminopropyl trimethoxysilane);
anionic surfactant (carboxylate type anionic surfactant) 3%,
and the balance of deionized water.
The water-based modified inorganic nano coating comprises the following components in percentage by mass:
75% of an aqueous nano-modified dispersion;
pigment (titanium white) 10%;
wetting dispersant 2%;
1% of leveling agent (BYK-346);
0.5% of defoaming agent (BYK-028);
0.5% of a thickener (Borchi Gel 0620);
and the balance of deionized water.
Wherein: the aqueous nano modified dispersion comprises the following components in percentage by mass:
40% of a nano-silica aqueous dispersion (solid content: 35%, average particle diameter: 80nm, pH: 8);
30% of alkoxy silane (methyltrimethoxy silane),
15% of an aqueous polyester dispersion (Hede 3PB 811W),
anionic surfactant (carboxylate type anionic surfactant) 3%,
and the balance of deionized water.
The preparation method of the automobile hub coating of the present embodiment is the same as that of example 1.
Example 3
The embodiment provides an automobile hub coating, which comprises a powder coating layer, a primer layer and a finish coating layer which are sequentially arranged on the surface of an automobile hub.
The powder coating layer is formed by coating powder coating on the surface of an automobile hub; the powder coating is an epoxy polyester powder coating.
The primer layer is formed from a primer; the primer comprises the following components in percentage by mass:
20% of an aqueous polyester resin (water-soluble polyester resin, homopter 1PB 83Y);
Aqueous acrylic resin (water-soluble acrylic resin, homode 1AB 911Y) 10%;
5% of aqueous blocked isocyanate (HDI, huiyu HY 112);
1% of a neutralizing agent (N, N-dimethylethanolamine);
0.3% of a substrate wetting agent (polyether modified siloxane solution);
leveling agent (BYK-346) 0.3%
0.5% of defoamer (BYK-011);
0.8% of thickener (Borchi Gel 0620);
5% of a cosolvent (50% by weight of ethylene glycol butyl ether and 50% by weight of ethanol mixture);
and the balance of deionized water.
The finish paint layer is formed by a finish paint, and the finish paint comprises the following components in percentage by mass:
93% of water-based modified inorganic nano paint;
5% of an aqueous organosilane dispersion;
and the balance of deionized water.
Wherein:
the aqueous organosilane dispersion comprises the following components in percentage by mass:
aminosilane (3-aminopropyl trimethoxysilane) 55%;
anionic surfactant (carboxylate type anionic surfactant) 2%,
and the balance of deionized water.
The water-based modified inorganic nano coating comprises the following components in percentage by mass:
55% of an aqueous nano-modified dispersion;
pigment (titanium white) 25%;
wetting dispersant 2%;
1% of leveling agent (BYK-346);
0.5% of defoaming agent (BYK-028);
0.5% of a thickener (Borchi Gel 0620);
And the balance of deionized water.
Wherein: the aqueous nano modified dispersion comprises the following components in percentage by mass:
50% of an aqueous dispersion of nanosilica (solid content 25%, average particle size 110nm, pH 8); 25% of alkoxy silane (methyltrimethoxy silane),
an aqueous polyester dispersion (Hede 3PB 811W) 20%,
anionic surfactant (carboxylate type anionic surfactant) 3%,
and the balance of deionized water.
The preparation method of the automobile hub coating of the present embodiment is the same as that of example 1.
Example 4
The embodiment provides an automobile hub coating, which comprises a powder coating layer, a primer layer and a finish coating layer which are sequentially arranged on the surface of an automobile hub.
The powder coating layer is formed by coating powder coating on the surface of an automobile hub; the powder coating is an epoxy polyester powder coating.
The primer layer is formed from a primer; the primer is the same as the primer of example 1.
The topcoat layer was formed from a topcoat that was substantially the same as the topcoat of example 1, except that: the aqueous nano modified dispersion in the finish paint further comprises the following components in percentage by mass: 6% of aqueous acrylic resin microcapsule and 6% of isocyanate microcapsule. Namely, the aqueous nano-modified dispersion in the top coat of the embodiment comprises the following components in percentage by mass:
50% of an aqueous dispersion of nanosilica (solid content 25%, average particle size 110nm, pH 8);
25% of alkoxy silane (methyltrimethoxy silane),
an aqueous polyester dispersion (Hede 3PB 811W) 20%,
aqueous acrylic resin microcapsules (microcapsules obtained in example 1 of CN 107715811B) 6%,
isocyanate microcapsules (microcapsules obtained in example 1 of CN 109535315B) 6%,
anionic surfactant (carboxylate type anionic surfactant) 3%,
and the balance of deionized water.
The preparation method of the automobile hub coating of the embodiment is basically the same as that of embodiment 1, except that in the preparation method of the finish paint of the embodiment, in step (i), the aqueous polyester resin dispersion, the aqueous acrylic resin microcapsule, the isocyanate microcapsule and the deionized water are added into the aqueous dispersion of nano silica, and the mixture is stirred uniformly to obtain a mixed liquid b.
Example 5
The embodiment provides an automobile hub coating, which comprises a powder coating layer, a primer layer and a finish coating layer which are sequentially arranged on the surface of an automobile hub.
The powder coating layer is formed by coating powder coating on the surface of an automobile hub; the powder coating is an epoxy polyester powder coating.
The primer layer is formed from a primer; the primer is the same as the primer of example 1.
The topcoat layer was formed from a topcoat that was substantially the same as the topcoat of example 1, except that: the aqueous nano modified dispersion in the finish paint further comprises the following components in percentage by mass: 5% of aqueous acrylic resin microcapsules and 5% of isocyanate microcapsules. Namely, the aqueous nano-modified dispersion in the top coat of the embodiment comprises the following components in percentage by mass:
50% of an aqueous dispersion of nanosilica (solid content 25%, average particle size 110nm, pH 8);
25% of alkoxy silane (methyltrimethoxy silane),
an aqueous polyester dispersion (Hede 3PB 811W) 20%,
aqueous acrylic resin microcapsules (microcapsules obtained in example 1 of CN 107715811B) 5%,
isocyanate microcapsules (microcapsules obtained in example 1 of CN 109535315B) 5%,
anionic surfactant (carboxylate type anionic surfactant) 3%,
and the balance of deionized water.
The preparation method of the automobile hub coating of the present embodiment is the same as that of example 4.
Example 6
The embodiment provides an automobile hub coating, which comprises a powder coating layer, a primer layer and a finish coating layer which are sequentially arranged on the surface of an automobile hub.
The powder coating layer is formed by coating powder coating on the surface of an automobile hub; the powder coating is an epoxy polyester powder coating.
The primer layer is formed from a primer; the primer is the same as the primer of example 1.
The topcoat layer was formed from a topcoat that was substantially the same as the topcoat of example 1, except that: the aqueous nano modified dispersion in the finish paint further comprises the following components in percentage by mass: 8% of aqueous acrylic resin microcapsules and 8% of isocyanate microcapsules. Namely, the aqueous nano-modified dispersion in the top coat of the embodiment comprises the following components in percentage by mass:
50% of an aqueous dispersion of nanosilica (solid content 25%, average particle size 110nm, pH 8);
25% of alkoxy silane (methyltrimethoxy silane),
an aqueous polyester dispersion (Hede 3PB 811W) 20%,
aqueous acrylic resin microcapsules (microcapsules obtained in example 1 of CN 109535315B) 8%,
isocyanate microcapsules (microcapsules obtained in example 1 of CN 109535315B) 8%,
anionic surfactant (carboxylate type anionic surfactant) 3%,
and the balance of deionized water.
The preparation method of the automobile hub coating of the present embodiment is the same as that of example 4.
Example 7
The embodiment provides an application of an automobile hub coating on the surface of an automobile aluminum alloy hub.
The automotive hub coatings of examples 1-6 were each applied to an a356 series cast automotive aluminum alloy hub.
Before spraying powder paint on the surface of the A356 series cast automobile aluminum alloy hub, carrying out chromium-free pretreatment on the cast and processed automobile aluminum alloy hub, and then coating the powder paint.
TABLE 1 raw materials components and mass percent (100%) of primer
Table 2 raw material components and mass percent (100%)
TABLE 3 raw materials components and mass percent (100%) of aqueous modified inorganic nano-coating
TABLE 4 raw materials components and mass percent (100%) of aqueous nano-modified dispersions
TABLE 5 raw material components and mass percent (100%) of aqueous silicone dispersion
The automobile hub coatings obtained in examples 1 to 6 above were each tested and the test results are shown in the following table, with comparative example 1 being an organic coating of a primer-paint-varnish sprayed onto the surface of an existing automobile hub.
Table 6 automobile hub coating test results
Wherein: * The detection method of the coating repair efficiency comprises the following steps: the automobile hub coatings of examples 4-6 were each broken by scoring a cross on the surface of the coating using a knife to self-repair the coating, and after 7 days of self-repair the repair rate of scratches and the adhesion of the coating were tested.
From the test results in table 6, it is clear that the automobile hub coating provided in the embodiments 1 to 6 of the present invention has good hardness, adhesion, neutral salt spray resistance, aging resistance, wear resistance and impact resistance, and the coating after the isocyanate microcapsule and the aqueous acrylic resin microcapsule are added in the embodiments 4 to 6 of the present invention has a self-repairing function, the self-repairing rate is higher than or equal to 90%, and the adhesion of the repaired coating is still good.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the invention, and the invention is intended to encompass such modifications and improvements.
Claims (10)
1. An automobile hub coating, characterized in that: the paint comprises a powder paint layer, a primer layer and a finish paint layer which are sequentially arranged on the surface of an automobile hub;
the powder coating layer is formed by coating powder coating on the surface of an automobile hub; the powder coating is an epoxy polyester powder coating;
the primer layer is formed from a primer; the primer comprises the following components in percentage by mass: 20-30% of aqueous polyester resin; 5-10% of water-based acrylic resin; 5-15% of water-based blocked isocyanate; 0.1-2.5% of neutralizer; 0.1 to 0.5 percent of substrate wetting agent; 0.1 to 0.5 percent of leveling agent; 0.2-0.8% of defoaming agent; 0.1-1.0% of thickener; 2-6% of cosolvent; deionized water balance;
The finish paint layer is formed by finish paint; the finishing paint comprises the following components in percentage by mass: 85-95% of water-based modified inorganic nano coating, 5-8% of water-based organosilane dispersion liquid and the balance of deionized water;
wherein:
the water-based modified inorganic nano coating comprises the following components in percentage by mass: 55-75% of aqueous nano modified dispersoid, 5-25% of pigment, 0.2-3% of wetting dispersant, 0.5-2% of flatting agent, 0.1-0.8% of defoamer, 0.1-0.9% of thickener and the balance of deionized water;
the aqueous nano modified dispersion comprises the following components in percentage by mass: 40-50% of nano silicon dioxide aqueous dispersion, 25-35% of alkoxy silane, 10-30% of aqueous polyester dispersion, 0.5-5% of anionic surfactant and the balance of deionized water;
the aqueous organosilane dispersion comprises the following components in percentage by mass: 45-65% of aminosilane, 0.5-5% of anionic surfactant and the balance of deionized water.
2. The automotive hub coating of claim 1, wherein: the aqueous nano modified dispersion further comprises the following components in percentage by mass: 5-8% of aqueous acrylic resin microcapsules and 5-8% of isocyanate microcapsules; the aqueous acrylic resin microcapsule comprises a first wall material and a first core material, wherein the first wall material comprises urea formaldehyde resin, and the first core material comprises aqueous acrylic resin; the isocyanate microcapsule comprises a second wall material and a second core material, wherein the second wall material comprises nano silicon dioxide, the second core material comprises isocyanate, and the isocyanate is aqueous isocyanate.
3. The automotive hub coating of claim 1, wherein: in the primer, the water-based polyester resin is water-soluble polyester resin, the solid content is 60-80%, the hydroxyl content is 90-150mgKOH/g, and the hydroxyl content is converted into 100% of resin solid content; in the finishing coat, the solid content of the aqueous polyester dispersion is 30-50%, the hydroxyl content is 60-120mgKOH/g, wherein the hydroxyl content is converted into 100% resin solid content, and the pH value is 7.0-9.0.
4. The automotive hub coating of claim 1, wherein: the solid content of the nano silicon dioxide aqueous dispersion liquid is 25-35%, the average particle diameter is 10-110nm, and the pH value is 7-10.
5. The automotive hub coating of claim 1, wherein: the alkoxy silane is as follows: one or two of methyltrimethoxysilane and methyltriethoxysilane are mixed.
6. The automotive hub coating of claim 1, wherein: the water-based acrylic resin is water-soluble acrylic resin, the solid content is 55-75%, the hydroxyl content is 60-90mgKOH/g, and the hydroxyl content is converted into 100% of resin solid content.
7. The automotive hub coating of claim 1, wherein: the aqueous blocked isocyanate is of the HDI type, the solid content is 65-85%, the NCO content is 8-11%, and the deblocking temperature is 100-120 ℃.
8. A method for preparing the automobile hub coating according to any one of claims 1-7, characterized in that: the preparation method comprises the following steps:
s1: spraying the powder coating on the surface of an automobile hub, and curing at 160-200 ℃ to form a powder coating layer, wherein the thickness of the powder coating layer is 50-90 mu m;
s2: spraying a primer and a finish paint on the surface of the powder paint layer obtained in the step S1, and curing at 120-130 ℃ to form a primer layer and a finish paint layer respectively, wherein the thickness of the primer layer is 3-8 mu m, and the thickness of the finish paint layer is 15-30 mu m; thereby obtaining the automobile hub coating.
9. Use of an automotive wheel hub coating according to any one of claims 1-7 on an automotive aluminium alloy wheel hub surface.
10. The use of an automotive wheel hub coating according to claim 9 on an automotive aluminum alloy wheel hub surface, wherein: the automobile aluminum alloy hub is an A356 series cast automobile aluminum alloy hub.
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| CN202311427899.0A CN117363075B (en) | 2023-10-31 | Automobile hub coating and preparation method and application thereof |
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| CN202311427899.0A CN117363075B (en) | 2023-10-31 | Automobile hub coating and preparation method and application thereof |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220676A (en) * | 1996-05-31 | 1999-06-23 | 巴斯福涂料股份公司 | Powder paint for multilayered painting |
| JP2007313475A (en) * | 2006-05-29 | 2007-12-06 | Basf Coatings Japan Ltd | Multilayer coating film formation process and article coated with the multilayer coating film |
| DE102008014717A1 (en) * | 2006-09-18 | 2009-09-24 | Nano-X Gmbh | Method for producing a highly abrasion-resistant vehicle paint, vehicle paint and its use |
| US20130089731A1 (en) * | 2010-07-02 | 2013-04-11 | Kansai Paint Co., Ltd. | Method for forming multilayer coating film |
| WO2015046262A1 (en) * | 2013-09-27 | 2015-04-02 | 旭硝子株式会社 | Powdery coating material and coated article |
| EP2987835A1 (en) * | 2014-08-22 | 2016-02-24 | Evonik Degussa GmbH | Hybrid curing of aqueous silane systems |
| CN106675271A (en) * | 2017-01-16 | 2017-05-17 | 广东四方威凯新材料有限公司 | Bake type single-layer waterborne flashing paint for aluminum alloy hub and preparation method of waterborne flashing paint |
| CN109517494A (en) * | 2017-09-17 | 2019-03-26 | 立邦涂料（天津）有限公司 | A kind of high rigidity epoxy-polyester type powder paint compositions, preparation method and applications |
| CN110588240A (en) * | 2019-08-27 | 2019-12-20 | 黄山五环科技有限公司 | Automobile hub coating film |
| WO2020089019A1 (en) * | 2018-10-30 | 2020-05-07 | Covestro Deutschland Ag | Method for producing a multilayer coating structure with a top layer made of silane group-containing prepolymers |
| CN113289877A (en) * | 2021-05-08 | 2021-08-24 | 浙江万丰摩轮有限公司 | Preparation method of motorcycle hub with nano coating |
| DE102020206231A1 (en) * | 2020-05-18 | 2021-11-18 | Verein zur Förderung von Innovationen durch Forschung, Entwicklung und Technologietransfer e.V. (Verein INNOVENT e.V.) | Method for coating a surface of a substrate |
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220676A (en) * | 1996-05-31 | 1999-06-23 | 巴斯福涂料股份公司 | Powder paint for multilayered painting |
| JP2007313475A (en) * | 2006-05-29 | 2007-12-06 | Basf Coatings Japan Ltd | Multilayer coating film formation process and article coated with the multilayer coating film |
| DE102008014717A1 (en) * | 2006-09-18 | 2009-09-24 | Nano-X Gmbh | Method for producing a highly abrasion-resistant vehicle paint, vehicle paint and its use |
| US20130089731A1 (en) * | 2010-07-02 | 2013-04-11 | Kansai Paint Co., Ltd. | Method for forming multilayer coating film |
| WO2015046262A1 (en) * | 2013-09-27 | 2015-04-02 | 旭硝子株式会社 | Powdery coating material and coated article |
| EP2987835A1 (en) * | 2014-08-22 | 2016-02-24 | Evonik Degussa GmbH | Hybrid curing of aqueous silane systems |
| CN106675271A (en) * | 2017-01-16 | 2017-05-17 | 广东四方威凯新材料有限公司 | Bake type single-layer waterborne flashing paint for aluminum alloy hub and preparation method of waterborne flashing paint |
| CN109517494A (en) * | 2017-09-17 | 2019-03-26 | 立邦涂料（天津）有限公司 | A kind of high rigidity epoxy-polyester type powder paint compositions, preparation method and applications |
| WO2020089019A1 (en) * | 2018-10-30 | 2020-05-07 | Covestro Deutschland Ag | Method for producing a multilayer coating structure with a top layer made of silane group-containing prepolymers |
| CN110588240A (en) * | 2019-08-27 | 2019-12-20 | 黄山五环科技有限公司 | Automobile hub coating film |
| DE102020206231A1 (en) * | 2020-05-18 | 2021-11-18 | Verein zur Förderung von Innovationen durch Forschung, Entwicklung und Technologietransfer e.V. (Verein INNOVENT e.V.) | Method for coating a surface of a substrate |
| CN113289877A (en) * | 2021-05-08 | 2021-08-24 | 浙江万丰摩轮有限公司 | Preparation method of motorcycle hub with nano coating |
Non-Patent Citations (1)
| Title |
|---|
| 李宾等: "在环氧富锌底漆+丙烯酸聚氨酯面漆体系的应用中以粉末涂料替代溶剂型涂料", 《电镀与涂饰》, vol. 38, no. 18, 30 September 2019 (2019-09-30), pages 995 - 998 * |
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