CN101397413A - VCI-containing flake cold-plating zinc and aluminum protective coating on steel structure surface and preparation method thereof - Google Patents
VCI-containing flake cold-plating zinc and aluminum protective coating on steel structure surface and preparation method thereof Download PDFInfo
- Publication number
- CN101397413A CN101397413A CNA2008102119927A CN200810211992A CN101397413A CN 101397413 A CN101397413 A CN 101397413A CN A2008102119927 A CNA2008102119927 A CN A2008102119927A CN 200810211992 A CN200810211992 A CN 200810211992A CN 101397413 A CN101397413 A CN 101397413A
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- CN
- China
- Prior art keywords
- palta type
- palta
- cold galvanizing
- vci
- component
- 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
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 78
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 29
- 239000010959 steel Substances 0.000 title claims abstract description 29
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims description 57
- 238000002360 preparation method Methods 0.000 title claims description 39
- 229910052725 zinc Inorganic materials 0.000 title description 21
- 239000011701 zinc Substances 0.000 title description 21
- 239000011253 protective coating Substances 0.000 title description 3
- 238000007747 plating Methods 0.000 title 1
- 238000000576 coating method Methods 0.000 claims abstract description 84
- 239000011248 coating agent Substances 0.000 claims abstract description 79
- 238000005246 galvanizing Methods 0.000 claims abstract description 53
- 239000003112 inhibitor Substances 0.000 claims abstract description 17
- 239000003973 paint Substances 0.000 claims description 52
- 238000003756 stirring Methods 0.000 claims description 36
- 239000000843 powder Substances 0.000 claims description 32
- 239000004411 aluminium Substances 0.000 claims description 26
- 238000010276 construction Methods 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 239000012752 auxiliary agent Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 15
- 239000002904 solvent Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 8
- 238000009835 boiling Methods 0.000 claims description 7
- 150000001412 amines Chemical class 0.000 claims description 6
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 4
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 4
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 3
- VLCDUOXHFNUCKK-UHFFFAOYSA-N N,N'-Dimethylthiourea Chemical compound CNC(=S)NC VLCDUOXHFNUCKK-UHFFFAOYSA-N 0.000 claims description 3
- JUVFQRVLJUIKNQ-UHFFFAOYSA-N N1CC1.N(=O)O Chemical compound N1CC1.N(=O)O JUVFQRVLJUIKNQ-UHFFFAOYSA-N 0.000 claims description 3
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- GTLQZNKUEFUUIS-UHFFFAOYSA-N carbonic acid;cyclohexanamine Chemical compound OC(O)=O.NC1CCCCC1 GTLQZNKUEFUUIS-UHFFFAOYSA-N 0.000 claims description 3
- 239000004312 hexamethylene tetramine Substances 0.000 claims description 3
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- XBPCUCUWBYBCDP-UHFFFAOYSA-N Dicyclohexylamine Chemical class C1CCCCC1NC1CCCCC1 XBPCUCUWBYBCDP-UHFFFAOYSA-N 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- NSOXQYCFHDMMGV-UHFFFAOYSA-N Tetrakis(2-hydroxypropyl)ethylenediamine Chemical compound CC(O)CN(CC(C)O)CCN(CC(C)O)CC(C)O NSOXQYCFHDMMGV-UHFFFAOYSA-N 0.000 claims description 2
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 claims description 2
- QEXUTEJNXGREGE-UHFFFAOYSA-N cyclohexylcyclohexane nitrous acid Chemical compound ON=O.C1CCCCC1C1CCCCC1 QEXUTEJNXGREGE-UHFFFAOYSA-N 0.000 claims description 2
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 claims description 2
- JJWLVOIRVHMVIS-UHFFFAOYSA-N isopropylamine Chemical group CC(C)N JJWLVOIRVHMVIS-UHFFFAOYSA-N 0.000 claims description 2
- 150000002632 lipids Chemical class 0.000 claims description 2
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims description 2
- 235000010234 sodium benzoate Nutrition 0.000 claims description 2
- 239000004299 sodium benzoate Substances 0.000 claims description 2
- AGGKEGLBGGJEBZ-UHFFFAOYSA-N tetramethylenedisulfotetramine Chemical compound C1N(S2(=O)=O)CN3S(=O)(=O)N1CN2C3 AGGKEGLBGGJEBZ-UHFFFAOYSA-N 0.000 claims description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 16
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 12
- -1 octylame Chemical compound 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 10
- 150000003839 salts Chemical class 0.000 description 9
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 7
- 239000002390 adhesive tape Substances 0.000 description 6
- FJMNNXLGOUYVHO-UHFFFAOYSA-N aluminum zinc Chemical compound [Al].[Zn] FJMNNXLGOUYVHO-UHFFFAOYSA-N 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005488 sandblasting Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical group CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 2
- 229910002012 Aerosil® Inorganic materials 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- SETMQJKGUSLSHX-UHFFFAOYSA-N cyclohexanamine;nitrous acid Chemical class [O-]N=O.[NH3+]C1CCCCC1 SETMQJKGUSLSHX-UHFFFAOYSA-N 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000004584 polyacrylic acid Substances 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- 235000010413 sodium alginate Nutrition 0.000 description 2
- 229940005550 sodium alginate Drugs 0.000 description 2
- 239000000661 sodium alginate Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 235000014692 zinc oxide Nutrition 0.000 description 2
- BMVXCPBXGZKUPN-UHFFFAOYSA-N 1-hexanamine Chemical class CCCCCCN BMVXCPBXGZKUPN-UHFFFAOYSA-N 0.000 description 1
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- 208000001613 Gambling Diseases 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- 239000004110 Zinc silicate Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000008431 aliphatic amides Chemical class 0.000 description 1
- 125000004183 alkoxy alkyl group Chemical group 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- QNDQILQPPKQROV-UHFFFAOYSA-N dizinc Chemical compound [Zn]=[Zn] QNDQILQPPKQROV-UHFFFAOYSA-N 0.000 description 1
- ZOIVSVWBENBHNT-UHFFFAOYSA-N dizinc;silicate Chemical compound [Zn+2].[Zn+2].[O-][Si]([O-])([O-])[O-] ZOIVSVWBENBHNT-UHFFFAOYSA-N 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002169 ethanolamines Chemical class 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical class OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 1
- 229910052909 inorganic silicate Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 1
- 229910052912 lithium silicate Inorganic materials 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Natural products OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ODUCDPQEXGNKDN-UHFFFAOYSA-N nitroxyl Chemical class O=N ODUCDPQEXGNKDN-UHFFFAOYSA-N 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical group CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 235000019351 sodium silicates Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 238000013268 sustained release Methods 0.000 description 1
- 239000012730 sustained-release form Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 235000019352 zinc silicate Nutrition 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
A squama type cold galvanizing aluminum coating used on the surface of steel structure and containing VCI (Vapor corrosion inhibitor). Besides, the invention also provides a VCI squama type cold galvanizing aluminum complex coating system on the surface of steel structure and prepared from the coating.
Description
Technical field
The present invention relates to a kind ofly be used for steel construction surface and contain Palta type cold galvanizing aluminum paint of VCI (Vapor corrosioninhibitor, gas phase sustained release dosage) and preparation method thereof, and the steel construction of preparation thus surface VCI scale zinc-aluminium protective coating system.
Background technology
Zinc-rich paint is the most widely used rust-proofing primer in anticorrosion of steel structure field and shop primer field, is different from common hot dip galvanizing process, and this coating is spraying application and curing at normal temperatures, is commonly called as " cold galvanizing ".But the zinc-rich paint of practical application all belongs to the ball zinc paint in the domestic and international project at present, is filler with spherical zinc powder all promptly.In order to pursue high dry film zinc content, to guarantee the conduction and the work-ing life of coating, the add-on of zinc powder is up to more than 80% in the slip in the ball zinc paint.So a large amount of interpolation zinc powders has substantially exceeded the critical volume concentration (CPVC) of filler.The quantity not sufficient of binding agent is with the intergranular hole of filling ball zinc in the slip, and this just is doomed the porousness of coating structure, and porosity is big, and shielding is poor.Simultaneously, zinc content is too high in the coating, and the just easy porous of coating causes that horizontal copolymerization destroys (layering), if apply other high solid component finish paint again, the tendency that just can make finish paint generate bubble increases on the zinc rich primer.In construction is stifled rifle, the gambling pipe fault that also often takes place because of ball zinc precipitation causes, thereby has influenced application weight and operating efficiency.
Protective system with the preparation of Palta type zinc powder, spraying application is on the steel construction surface through sandblasting, formed the Palta type cold galvanizing aluminum coating of tile bridging arrangement, the CPVC (critical pigment volume concentration) of coating is reduced, the consumption of zinc powder reduces, and coating densification, erosion resistance is better, and because good shielding properties, parallel overlap joint performance, electrical contact performance, the easy characteristic that suspends of Palta type zinc powder makes the antiseptic property of this a series of Palta type zinc-rich paint and workability obviously be better than traditional ball zinc zinc-rich paint.For example the particle diameter of spherical zinc powder is about 5～10 μ m, and the thickness of sheet zinc has only one of percentage of common ball zinc about 0.1 μ m.Be all the coating of 60 μ m like this; which floor zinc granule common ball zinc has only; and the Palta type zinc powder can form the system of parallel overlap joint, folded array in coating; layers up to a hundred have been reached; be to contact between the sheet zinc of parallel overlap joint with the point that the face contact replaces between ball zinc; though so zinc powder interpolation quantity reduces significantly in the coating, coating still maintains good conduction, has guaranteed the electro-chemical protection performance of coating.
Summary of the invention
In order to overcome above-mentioned defective, the present invention adopts at steel construction surface-coated one deck protective coating, makes itself and steel construction form a Palta type cold galvanizing aluminum coating protection system so that steel construction reaches a longer anticorrosion life-span.
According to a kind of technical scheme of the present invention, its coating is pure dissolubility VCI Palta type cold galvanizing aluminum paint, and wherein pure dissolubility zinc-aluminium coating is made up of by following weight ratio two kinds of components of A, B,
A component: Palta type zinc powder 3%～30%; Palta type aluminium powder 3%～20%; Leveling auxiliary agent 0.1～0.5%; Resin 15%～20%; Vapour-phase inhibitor 0.5%～3%; Solvent 5%～20%;
B component: solidifying agent 5%～20%; Thixotroping auxiliary agent: 0.1～1.0%; Solvent 5%～20%.
The weight sum of A+B component is 100%.
According to a kind of technical scheme of the present invention, a kind of compound coating system of steel construction is made of steel substrate and Palta type cold galvanizing aluminum coating, it is characterized in that, described Palta type cold galvanizing aluminum coating is made of above-mentioned pure dissolubility zinc-aluminium coating.
According to another embodiment of the present invention, the preparation method of pure dissolubility zinc-aluminium coating comprises the steps:
The preparation of A component: Palta type zinc powder and Palta type aluminium powder joined in the low boiling point organic solvent stir, behind the thorough mixing, add leveling auxiliary agent and resin and vapour-phase inhibitor, stir.
The preparation of B component: solidifying agent is dissolved in the low boiling point organic solvent, adds the thixotroping auxiliary agent then; Stir.
During use,, be generally about half an hour, promptly get pure dissolubility VCI Palta type cold galvanizing aluminum paint of the present invention two kinds of component thorough mixing of A, B and stirring.
In preferred embodiments, the sheet of Palta type zinc powder and Palta type aluminium powder is thick is below the 1 μ m; Preferably at 0.1～1 μ m; More preferably at 0.1～0.8 μ m; 0.2～0.4 μ m most preferably; Sheet directly is below the 50 μ m, preferably at 1～50 μ m; More preferably at 5～45 μ m; 15～30 μ m most preferably.
The gross weight of Palta type zinc powder coating based is preferably 5-28% weight, more preferably 8-25% weight, most preferably 10-20% weight; The gross weight of Palta type aluminium powder coating based is preferably 5-18% weight, more preferably 8-15% weight, most preferably 10-12% weight.
The Palta type aluminium powder can part add with the form of mixtures of Palta type zinc powder, and for example the form with scale type aluminum zinc powder adds, and zinc powder in the scale type aluminum zinc powder: the mass ratio of aluminium powder is generally 9:1, and remaining aluminium powder then adds separately.
VCI; be that vapour-phase inhibitor claims volatile corrosion inhibitor again; automatically the gas adsorption that volatilizes at normal temperatures can suppress the atomospheric corrosion of metal on metallic surface, the not direct contacting metal surface of vapour-phase inhibitor; can spontaneously be adsorbed on protected metallic surface; form layer protecting film, therefore can make surface, inner chamber, pipeline, groove even the slit of metal products not be divided into and can both be protected, its rust-proof life is long; easy and simple to handle, cost is low.But because the boiling characteristics of VCI, this technology all is applied to the protection of steel construction in the closed environment usually, and the porosity of common paint coatings is bigger, causes the volatilization loss of VCI easily, so this technology seldom is applied in the coating.But because the existence of scale type aluminum zinc powder in the coating, make whole coating form the bridging arrangement of tile, make coating have high shielding properties, the good premise condition is provided for the VCI The Application of Technology, reduced the invalid loss that causes owing to the diffusion of VCI in coating greatly, improved the service efficiency of VCI, so the present invention has adopted the VCI technology research Palta type cold galvanizing aluminum paint and preparation method thereof that combines with the scale type aluminum zinc powder technology.
Vapour-phase inhibitor of the present invention is the vapour-phase inhibitor of this area routine, comprises low-molecular-weight amine, as Isopropylamine, diethylamine, hexahydroaniline, octylame, quadrol, divinyl triamine, trivinyl tetramine etc.; Also comprise nitrous acid ethylenimine, dicyclo base in the sixth of the twelve Earthly Branches amine, monoethanolamine, cyclohexylamine carbonate, nitrous acid bicyclohexane base ammonium or lipid acid dicyclohexyl amine salt; Or amine such as hexamethylenetetramine; Or dimethyl thiourea, Sodium Benzoate, sodium sulfonate etc.; Preferred nitrous acid ethylenimine, dicyclo base in the sixth of the twelve Earthly Branches amine, monoethanolamine, hexamethylenetetramine or dimethyl thiourea.
In preferred embodiments, the resin in the A component, preferably polyethylene butyral and Resins, epoxy; Leveling auxiliary agent is the auxiliary agent of this area routine, as modified polyorganosiloxane type flow agent, the restricted long-chain resin type of consistency flow agent, as Voncoat R 3310 and multipolymer; With the high boiling solvent is the flow agent of main component, preferred modified polyorganosiloxane type flow agent, polyimide, polycarbonate, polyacrylic acid, more preferably modified polyorganosiloxane type flow agent.Solvent is preferably low boiling point organic solvent, as alcohols or arene, and more preferably alcohols, also more preferably C
1-C
6Alkanol, most preferred ethanol and propyl carbinol.
The solidifying agent preferred alkyl silicon ester of B component, polymeric amide, aliphatic amide, phenolic aldehyde amine, inferior ketoamine class, preferred polyol alkyl silicate also, it adopts polycondensation siloxanes, alkyl silicate or formula to contain hydroxyalkyl, the alkoxyalkyl of 1-6 carbon atom, the organosilicon acid esters and the polyvalent alcohol of hydroxyl alkoxyalkyl carries out transesterification reaction, generates the precondensation product with certain molecular weight.
Preferred wilkinite of thixotroping auxiliary agent or aerosil etc.; Preferred alcohols of solvent or arene, more preferably monobasic C
1-C
6Alkanol or polyvalent alcohol and arene, especially preferred alcohol, propyl carbinol, ethylene glycol, two hexylene glycols, dipropylene glycol, toluene, dimethylbenzene etc.; Most preferred ethanol, propyl carbinol and dimethylbenzene.
According to a kind of embodiment of the present invention, its coating is water-soluble VCI Palta type cold galvanizing aluminum paint, form by following weight ratio by two kinds of components of A, B,
A component: Palta type zinc powder 5%～30%; Palta type aluminium powder 5%～15%,
B component: solidifying agent 25%～35%; Thixotroping auxiliary agent 0.1～1.0%; Vapour-phase inhibitor 0.5%～3%; Solvent 10%～20%.
The summation of A+B component is 100% quality.
According to another kind of technical scheme of the present invention, a kind of compound coating system of steel construction, be made of steel substrate and Palta type cold galvanizing aluminum coating, it is characterized in that, described Palta type cold galvanizing aluminum coating is made of above-mentioned water-soluble VCI Palta type cold galvanizing aluminum paint.
The present invention also further relates to following technical scheme, and a kind of preparation method of aforesaid water-soluble zinc-aluminium coating is characterized in that:
The preparation of A component, Palta type zinc powder and Palta type aluminium powder mixing and stirring.
The preparation of B component: solidifying agent is added to the water to stir, and adds thixotroping auxiliary agent and vapour-phase inhibitor then, stirs.
During use,, be generally about half an hour, promptly get water-soluble VCI Palta type cold galvanizing aluminum paint of the present invention two kinds of component thorough mixing of A, B and stirring.
For the requirement of Palta type zinc powder, Palta type aluminium powder and vapour-phase inhibitor, water-soluble VCI Palta type cold galvanizing aluminum paint in the pure dissolubility VCI Palta type cold galvanizing aluminum paint definition.
And for solidifying agent, the solidifying agent in the water-soluble VCI Palta type cold galvanizing aluminum paint is preferably high-module lithium silicate, potassium silicate, sodium silicate aqueous solution etc.; The thixotroping auxiliary agent is preferably sodium alginate or aerosil etc.; Solvent is a water.
According to a kind of embodiment of the present invention,, when being administered to the steel construction surface, preferably the sandblasting of Sa2.5 level is carried out on the surface, to strengthen the sticking power on pure dissolubility VCI zinc-aluminium coating and steel construction surface for pure dissolubility VCI zinc-aluminium coating.Simultaneously pure dissolubility VCI zinc-aluminium coating can adopt paste to contain stearic zinc powder and/or aluminium powder as filler.Can save like this among sheet zinc (aluminium) preparation technology clean, oven dry, suction filtration and disperse four big operations again, thereby save man-hour about 3/5, it is about 2/3 to save electric power, the manufacturing cost of sheet zinc (aluminium) is reduced surpass 50%, and further improved the execution of coating performance.
According to another embodiment of the present invention, for water-soluble VCI zinc-aluminium coating, raw material Palta type zinc powder wherein and Palta type aluminium powder preferably carry out skimming treatment, as adopt clean-out system that skimming treatment is carried out on the surface of Palta type zinc powder and Palta type aluminium powder, thereby overcome the Palta type zinc powder of present preparation and the deficiency that the Palta type aluminium powder can't be adapted to water-borne coatings, make Palta type zinc powder and Palta type aluminium powder can be adapted to the water-borne coatings field.Described clean-out system is selected from dodecyl diglycollic amide, fatty alcohol-polyoxyethylene ether, polyoxyethylene octylphenol ether or alkyl sodium sulfonate.
VCI cold galvanizing aluminum coating of the present invention (thickness is 40～50 μ m) can be realized the comparatively harsh salt spray resistance of (according to HG/T 3668 " zinc-rich paint " detection) about 4000h.
The novel environment-friendly type VCI Palta type cold galvanizing aluminum paint of the present invention's preparation has following characteristics:
1, this paint coatings is an inorganic coating, and the anti-ultraviolet ageing performance is good, long service life;
2, solvent is water-based or pure molten environmentally friendly solvent, environmental protection, non-environmental-pollution;
3, adopt Palta type zinc powder and aluminium powder as filler, the coating shielding is good, and etch resistant properties is good;
4, adopt the high-performance vapour-phase inhibitor in the coating, zinc-impregnating layer and zinc powder have been played corrosion inhibition, slowed down the consumption of zinc powder, and the generation that has reduced zinc powder surface white zinc oxide;
5, coating good luster, metal-like is strong, and is ornamental good.
6, the inorganic silicate in the coating, behind the paint spay-coating, can absorb airborne moisture hydrolysis aftercondensated, the silicic acid that hydrolysis reaction generates can form the double salt of zinc silicate, iron with coating and base material, thereby make coating pass through the chemical bond firm attachment in substrate surface, and silicate has corrosion inhibition, can reduce the wear rate of zinc powder, thereby has improved the work-ing life of coating.
7, the inorganic coating heat resisting temperature can reach 400 ℃, and various mineral oil and organic solvent are had high stability;
In preferred embodiments, the zinc-aluminium coating of preferred ethanol-soluble type, because it is good with the surperficial affinity of zinc-impregnating layer, strong adhesion, edge-protected property is strong; The solvent that adopts is nontoxic environmentally friendly solvent; The etch resistant properties excellence; Also curable below 0 ℃, can all-weather construction; But all-weather construction.Coating has dried coating film characteristic rapidly, can construct in the environment of environment below 0 ℃ and high humidity, is fit to airless spraying.Film can be under-20 ℃～400 ℃ broad condition life-time service.And fugitive color and zinc white occurs not; Production technique is convenient.
Description of drawings
Fig. 1 is the anti-corrosion compound coating system that VCI scale type aluminum zinc paint coatings and substrate of steel plate form.
Embodiment
The present invention is described in detail by the following examples, and described embodiment is convenient to understand the present invention, but not limitation of the present invention, those skilled in the art, on the basis of reading specification sheets of the present invention, any modification or the change made can not deviate from the spirit and scope of the present invention.
The preparation of test sample plate
Unless stated otherwise, test sample plate is generally cold-rolling mild steel plate.Steel plate at first will carry out the sandblasting of Sa2.5 level before applying pure dissolubility (or water-based) VCI Palta type cold galvanizing aluminum paint.Coating to test component
After two components of alcohol molten (or water-based) VCI Palta type cold galvanizing aluminum paint are mixed in proportion, with air gun with the paint spay-coating for preparing on the above-mentioned test sample plate that has prepared.After the spraying, adopt the form of seasoning, and parked at least two weeks, carry out following test then.
Crooked experiment
Test procedure by ASTM-D522 is realized.With a coated side that scribbles the adhesive tape sticking of pressure sensitive adhesive in test sample plate deformation part, open rapidly then.The lacquer amount that coating is taken away according to the adhesive tape that is stuck is calculated.
Draw the lattice experiment
At first with one sharp keen cutter is streaked coating on the set iron, first group of parallel lines is vertical with second group of parallel lines.The part of streaking in the test sample plate coated side with an adhesive tape sticking that scribbles pressure sensitive adhesive is opened rapidly then again.The lacquer amount that coating is taken away according to the adhesive tape that is stuck is calculated.
Salt fog resistance test (ASTM B117) assessment
The preservative property on coated surface are to test according to the method to the standard salt mist experiment ASTMB-117 of paint and varnish.During test, parts are placed in the container keep constant temperature, make it to be exposed in the thin salt fog of 5% weight salts solution, keep definite for some time, use water rinse then, dry again.The extent of corrosion of unit under test is represented with the per-cent of red rust.For the tested model of curved part, crooked corrosive fluid can be represented with the per-cent of red rust.At first apply and bending, again a Pressuresensitive Tape is sticked on curved part, take off away adhesive tape rapidly.Adhesive tape is as measuring coated adhesive.Model is as the preservative property experiment.(assessment also can experimentize with reference to the salt spray resistance experimental technique of chemical industry standard HG/T 3668 " zinc rich primer ".)
Embodiment 1 (preparation of pure dissolubility VCI Palta type cold galvanizing aluminum paint)
A component preparation: with sheet thick≤Palta type zinc powder 300 grams of 0.2 μ m, sheet footpath≤20 μ m and sheet be thick≤0.1 μ m, sheet footpath≤25 μ m Palta type aluminium powders 100 restrain, joining in 100mL, 95% the ethanol stirs more than 0.5 hour, make both thorough mixing even, add 2 gram modified polyorganosiloxane type flow agents, 150 gram polyvinyl butyral acetals and 10 gram nitrite cyclohexylamines, stir more than 0.5 hour, to even.
The preparation of B component: 160 gram alkyl silicates are dissolved in to stir thorough mixing in 100mL, 95% the ethanol even, add 2 gram organobentonites, stir.
Before the coating, two kinds of components of A, B are mixed, after stirring, obtain silver gray finished product alcohol dissolubility VCI Palta type cold galvanizing aluminum paint.
Embodiment 2 (preparation of pure dissolubility VCI Palta type cold galvanizing aluminum paint)
A component preparation: sheet is thick≤the Palta type zinc powder of 0.4 μ m, sheet footpath≤40 μ m and Palta type aluminium powder each 150 restrain, joining in 200mL, 95% the propyl carbinol stirs more than 0.5 hour, make both thorough mixing even, add 5 gram flow agent M, 200 gram Resins, epoxy and 20 gram hexamethylenetetramines, stir more than 0.5 hour, to even.
The preparation of B component: 180 gram alkyl silicates are dissolved in to stir thorough mixing in 100mL, 95% the propyl carbinol even, add 10 gram aerosils, stir.
Before the coating, two kinds of components of A, B are mixed, after stirring, obtain silver gray finished product alcohol dissolubility Palta type cold galvanizing aluminum paint.
Embodiment 3 (preparation of pure dissolubility VCI Palta type cold galvanizing aluminum paint)
A component preparation: sheet is thick≤the Palta type zinc powder of 0.1 μ m, sheet footpath≤15 μ m and Palta type aluminium powder each 40 restrain, joining in 100mL, 95% the dimethylbenzene stirs more than 0.5 hour, make both thorough mixing even, add 1 gram polyacrylic acid, 160 gram polyvinyl butyral acetals and 5 gram dicyclo hexylamines, stir more than 0.5 hour, to even.
The preparation of B component: 150 gram alkyl silicates are dissolved in to stir thorough mixing in 100mL, 95% the dimethylbenzene even, add 5 gram organobentonites, stir.
Before the coating, two kinds of components of A, B are mixed, after stirring, obtain silver gray finished product alcohol dissolubility Palta type cold galvanizing aluminum paint.
Embodiment 4 (preparation of water-soluble VCI Palta type cold galvanizing aluminum paint)
A component preparation: with sheet thick≤the Palta type zinc powder 300 of 0.2 μ m, sheet footpath≤20 μ m restrains; Sheet is thick≤Palta type aluminium powder 200 grams of 0.2 μ m, sheet footpath≤20 μ m, and make both thorough mixing even.
The preparation of B component: the deionized water for stirring that 300 gram high-modulus sodium silicates is joined 100mL is even, adds 1 gram sodium alginate and 10 gram nitrite cyclohexylamines then, stirs more than 0.5 hour, extremely evenly.
Before the coating, two kinds of components of A, B are mixed, after stirring, obtain the water-soluble Palta type cold galvanizing of silvery white finished product aluminum paint.
Embodiment 5 (preparation of water-soluble VCI Palta type cold galvanizing aluminum paint)
A component preparation: with sheet thick≤the Palta type zinc powder 250 of 0.4 μ m, sheet footpath≤40 μ m restrains; Sheet is thick≤Palta type aluminium powder 150 grams of 0.1 μ m, sheet footpath≤25 μ m, and make both thorough mixing even.
The preparation of B component: the deionized water for stirring that 350 gram high-module potassium silicates is joined 100mL is even, adds 5 gram aerosils and 30 gram cyclohexylamine carbonates then, is stirred to evenly.
Before the coating, two kinds of components of A, B are mixed, after stirring, obtain the water-soluble VCI Palta type of silvery white finished product cold galvanizing aluminum paint.
Embodiment 6 (preparation of water-soluble VCI Palta type cold galvanizing aluminum paint)
A component preparation: with sheet thick≤0.1 μ m, sheet footpath≤15 μ m Palta type zinc powders, 50 grams; Sheet is thick≤Palta type aluminium powder 50 grams of 0.2 μ m, sheet footpath≤20 μ m, and make both thorough mixing even.
The preparation of B component: the deionized water for stirring that 250 gram high-module lithium silicates is joined 100mL is even, adds 1 gram organobentonite and 10 gram monoethanolamines then, is stirred to evenly.
Before the coating, two kinds of components of A, B are mixed, after stirring, obtain the water-soluble VCI Palta type of silvery white finished product cold galvanizing aluminum paint.
Experimental result
Adopt pure dissolubility of the present invention (water-soluble) Palta type cold galvanizing aluminum paint that substrate of steel plate is carried out The coating experiment, substrate of steel plate is the cold rolled sheet that reaches 2.5 grades of sandblasts, and the sheet material specification is 150 * 70 * 2mm; The coat-thickness of alcohol dissolubility/water-based VCI Palta type cold galvanizing aluminum paint is 30～60 μ m, preferred 40～50 μ m.
Alcohol dissolubility/water-based Palta type cold galvanizing aluminum coating all sprays on steel construction surface, and coat-thickness is all about 40～50 μ m.Through cross-hatching and bending method check, coating adhesion is good.Through long lifetime salt mist experiment (draw fork method) check, the coating salt spray resistance life-span reaches 4000h, and coating does not ftracture, do not bubble, no red rust, and white product is less.Through the damp and hot examination of 4000h, coating is intact simultaneously.
Claims (8)
1, a kind of pure dissolubility VCI Palta type cold galvanizing aluminum paint that is used for the steel construction surface is characterized in that described Palta type cold galvanizing aluminum paint is made up of by following weight ratio two kinds of components of A, B,
A component: Palta type zinc powder 3%～30%; Palta type aluminium powder 3%～20%; Leveling auxiliary agent 0.1～0.5%; Resin 15%～20%; Vapour-phase inhibitor 0.5%～3%; Solvent 5%～20%;
B component: solidifying agent 5%～20%; Thixotroping auxiliary agent: 0.1～1.0%; Solvent 5%～20%.
The weight sum of A+B component is 100%.
2, Palta type cold galvanizing aluminum paint according to claim 1, described vapour-phase inhibitor is selected from Isopropylamine, diethylamine, hexahydroaniline, octylame, quadrol, divinyl triamine, trivinyl tetramine etc., nitrous acid ethylenimine, dicyclo base in the sixth of the twelve Earthly Branches amine, monoethanolamine, cyclohexylamine carbonate, nitrous acid bicyclohexane base ammonium or lipid acid dicyclohexyl amine salt, amines such as hexamethylenetetramine, dimethyl thiourea, Sodium Benzoate or sodium sulfonate.
3, Palta type cold galvanizing aluminum paint according to claim 1 and 2, wherein said resin is selected from polyvinyl butyral acetal or Resins, epoxy.
4, a kind of compound coating system that is used for the steel construction surface comprises steel substrate and Palta type cold galvanizing aluminum coating, it is characterized in that, described Palta type cold galvanizing aluminum coating is made of each pure dissolubility VCI Palta type cold galvanizing aluminum paint of claim 1-3.
5, the preparation method of each described pure dissolubility VCI Palta type cold galvanizing aluminum paint of claim 1-3, it comprises the steps:
The preparation of A component: Palta type zinc powder and Palta type aluminium powder joined in the low boiling point organic solvent stir, behind the thorough mixing, add leveling auxiliary agent and resin and vapour-phase inhibitor, stir.
The preparation of B component: solidifying agent is dissolved in the low boiling point organic solvent, adds the thixotroping auxiliary agent then; Stir.
6, a kind of water-soluble VCI Palta type cold galvanizing aluminum paint that is used for the steel construction surface is made up of by following weight ratio two kinds of components of A, B,
A component: Palta type zinc powder 5%～30%; Palta type aluminium powder 5%～15%,
B component: solidifying agent 25%～35%; Thixotroping auxiliary agent 0.1～1.0%; Vapour-phase inhibitor 0.5%～3%; Solvent 10%～20%.
The summation of A+B component is 100% quality.
7, a kind of compound coating system that is used for the steel construction surface comprises steel substrate and Palta type cold galvanizing aluminum coating, it is characterized in that, described Palta type cold galvanizing aluminum coating is made of the water-soluble VCI Palta type cold galvanizing aluminum paint of claim 6.
8, a kind of method for preparing the described water-soluble VCI Palta type cold galvanizing aluminum paint of claim 6, it comprises the steps:
The preparation of A component, Palta type zinc powder and Palta type aluminium powder mixing and stirring;
The preparation of B component: solidifying agent is added to the water to stir, and adds thixotroping auxiliary agent and vapour-phase inhibitor then, stirs.
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