CN117025055A - Anticorrosive coating system for outer surface of bridge steel - Google Patents
Anticorrosive coating system for outer surface of bridge steel Download PDFInfo
- Publication number
- CN117025055A CN117025055A CN202310966628.6A CN202310966628A CN117025055A CN 117025055 A CN117025055 A CN 117025055A CN 202310966628 A CN202310966628 A CN 202310966628A CN 117025055 A CN117025055 A CN 117025055A
- Authority
- CN
- China
- Prior art keywords
- parts
- modified
- graphene
- epoxy
- coating
- 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.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 147
- 239000011248 coating agent Substances 0.000 title claims abstract description 146
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 39
- 239000010959 steel Substances 0.000 title claims abstract description 39
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 92
- 239000004593 Epoxy Substances 0.000 claims abstract description 89
- 239000003973 paint Substances 0.000 claims abstract description 89
- 239000002987 primer (paints) Substances 0.000 claims abstract description 70
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000011701 zinc Substances 0.000 claims abstract description 51
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 51
- -1 polysiloxane Polymers 0.000 claims abstract description 49
- 238000005260 corrosion Methods 0.000 claims abstract description 41
- 239000002135 nanosheet Substances 0.000 claims abstract description 41
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 41
- 229910052742 iron Inorganic materials 0.000 claims abstract description 40
- 239000000843 powder Substances 0.000 claims abstract description 35
- 230000007797 corrosion Effects 0.000 claims abstract description 32
- 239000003822 epoxy resin Substances 0.000 claims abstract description 31
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000013522 chelant Substances 0.000 claims abstract description 23
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 23
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 23
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 20
- 239000003085 diluting agent Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- AHDSRXYHVZECER-UHFFFAOYSA-N 2,4,6-tris[(dimethylamino)methyl]phenol Chemical compound CN(C)CC1=CC(CN(C)C)=C(O)C(CN(C)C)=C1 AHDSRXYHVZECER-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000005002 finish coating Substances 0.000 claims abstract description 7
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims abstract description 6
- 229910000165 zinc phosphate Inorganic materials 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 13
- 229910052582 BN Inorganic materials 0.000 claims description 12
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 12
- 239000010445 mica Substances 0.000 claims description 12
- 229910052618 mica group Inorganic materials 0.000 claims description 12
- 230000004048 modification Effects 0.000 claims description 12
- 238000012986 modification Methods 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical class [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 11
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 10
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 10
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 8
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 8
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 7
- 239000004925 Acrylic resin Substances 0.000 claims description 7
- 229920000178 Acrylic resin Polymers 0.000 claims description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000012948 isocyanate Substances 0.000 claims description 7
- 150000002513 isocyanates Chemical class 0.000 claims description 7
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 claims description 5
- 239000011324 bead Substances 0.000 claims description 5
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- 239000000047 product Substances 0.000 claims description 5
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- 238000000967 suction filtration Methods 0.000 claims description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 4
- 239000012298 atmosphere Substances 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 3
- WJRBRSLFGCUECM-UHFFFAOYSA-N hydantoin Chemical compound O=C1CNC(=O)N1 WJRBRSLFGCUECM-UHFFFAOYSA-N 0.000 claims description 3
- 229940091173 hydantoin Drugs 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000011353 cycloaliphatic epoxy resin Substances 0.000 claims description 2
- 241000276425 Xiphophorus maculatus Species 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 71
- 238000012360 testing method Methods 0.000 description 18
- 239000012855 volatile organic compound Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 15
- 239000000853 adhesive Substances 0.000 description 11
- 230000001070 adhesive effect Effects 0.000 description 11
- 238000002360 preparation method Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 5
- 230000032683 aging Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- UJTGYJODGVUOGO-UHFFFAOYSA-N diethoxy-methyl-propylsilane Chemical compound CCC[Si](C)(OCC)OCC UJTGYJODGVUOGO-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009974 thixotropic effect Effects 0.000 description 2
- 101100412102 Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd) rec2 gene Proteins 0.000 description 1
- 101100356020 Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd) recA gene Proteins 0.000 description 1
- 101100042680 Mus musculus Slc7a1 gene Proteins 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002064 nanoplatelet Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- DPTATFGPDCLUTF-UHFFFAOYSA-N phosphanylidyneiron Chemical compound [Fe]#P DPTATFGPDCLUTF-UHFFFAOYSA-N 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
-
- 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
- C09D5/24—Electrically-conducting paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
Abstract
The invention relates to the technical field of corrosion protection, in particular to an anticorrosive coating system for the outer surface of bridge steel. The coating system comprises a graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer, an epoxy cloud iron intermediate paint coating and a polysiloxane finish coating; the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer comprises the following components in parts by weight: 0.5-1.5 parts of graphene, 0.5-1.5 parts of flaky MXanee, 10-12 parts of epoxy resin, 62.5-67.8 parts of modified zinc powder, 1-2 parts of 2,4, 6-tris (dimethylaminomethyl) phenol, 11-13 parts of curing agent, 5-10 parts of ferrophosphorus powder, 5-8 parts of active diluent, 1-2 parts of zinc phosphate and 0.2-1 part of rare earth chelate. The three coatings are mutually matched, so that the comprehensive protection of the bridge steel structure can be provided, the problems of corrosion, abrasion, oxidization and the like are prevented, and the service life of the bridge is prolonged.
Description
Technical Field
The invention relates to the technical field of corrosion protection, in particular to an anticorrosive coating system for the outer surface of bridge steel.
Background
With the rapid development of town, the bridge engineering plays an increasingly prominent role in the process of town. However, in practical engineering, damage to the bridge structure is often caused due to various reasons, such as oxidation, corrosion, fatigue, etc., so that a great hidden danger is brought to the safety of the bridge structure. The anti-corrosion treatment of the bridge is a key for ensuring long-term service and maintenance of the bridge. At present, in bridge engineering, three-layer composite anticorrosive coating systems of an epoxy zinc-rich primer, an epoxy iron-cloud intermediate paint and a polyurethane finish are commonly used for anticorrosive treatment, however, the existing epoxy zinc-rich primer has higher content of VOCs (volatile organic compounds) and has larger influence on environment and human health. The corrosion resistance of the existing corrosion-resistant coating system needs to be further improved.
Disclosure of Invention
The technical problem solved by the invention is at least one of the following problems: the existing epoxy zinc-rich primer has higher content of VOCs (volatile organic compounds) and has larger influence on the environment and human health. The corrosion resistance of the existing corrosion-resistant coating system needs to be further improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
an anticorrosive coating system for the outer surface of bridge steel comprises a graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer, an epoxy iron-cloud intermediate paint coating and a polysiloxane finish coating; the graphene-Mxene double-nanosheet modified epoxy zinc-rich primer layer comprises the following components in parts by weight: 0.5-1.5 parts of graphene, 0.5-1.5 parts of flaky MXenee, 10-12 parts of epoxy resin, 62.5-67.8 parts of modified zinc powder, 1-2 parts of 2,4, 6-tris (dimethylaminomethyl) phenol, 11-13 parts of curing agent, 5-10 parts of ferrophosphorus powder, 5-8 parts of active diluent, 1-2 parts of zinc phosphate and 0.2-1 part of rare earth chelate; wherein the modified zinc powder is obtained by modification treatment of a silane coupling agent.
Optionally, the preparation method of the flaky Mxene comprises the following steps:
step A1, adding carbon titanium aluminum into a mixed solution composed of lithium fluoride and hydrochloric acid, stirring and reacting for 24-48 hours at 30-50 ℃, and collecting a precipitation product;
and A2, adding water into the precipitate, and carrying out ultrasonic treatment, centrifugation, suction filtration and drying treatment in an inert gas atmosphere to obtain the flaky Mxene.
Alternatively, the epoxy resin includes one of bisphenol a type epoxy resin, bisphenol F type epoxy resin, glycidyl ester epoxy resin, alicyclic epoxy resin, and hydantoin epoxy resin.
Optionally, the reactive diluent comprises ethylene glycol diglycidyl ether.
Optionally, the rare earth chelate includes a rare earth ytterbium chelate and a rare earth yttrium chelate.
Optionally, the epoxy cloud iron intermediate paint coating comprises the following components in parts by weight: 30-40 parts of epoxy resin, 10-20 parts of modified cloud iron powder, 7-7.5 parts of talcum powder, 7-10 parts of modified aluminum oxide, 3-5 parts of barium sulfate, 5-7 parts of ferric oxide, 1.0-2.0 parts of 2,4, 6-tris (dimethylaminomethyl) phenol, 2-5 parts of active diluent, 20-22 parts of curing agent and 0.2-1 part of rare earth chelate; wherein the modified cloud iron powder and the modified alumina are both obtained by modification treatment of a silane coupling agent.
Optionally, the polysiloxane topcoat coating comprises the following components: 38-42 parts of polysiloxane resin, 29-31 parts of organosilicon modified acrylic resin, 14-16 parts of isocyanate, 1.5-2.5 parts of glass beads, 12-14 parts of modified titanium oxide, 1.5-2.5 parts of flaky titanium oxide, 1.5-2.5 parts of modified mica powder, 1.5-2.5 parts of modified flaky boron nitride powder, 0.1-1 part of modified graphene, 3.5-4.5 parts of propylene glycol monomethyl ether, 3.5-4.5 parts of isopropanol and 2.5-3.5 parts of ethanol; wherein the modified mica powder, the modified titanium oxide and the modified flaky boron nitride powder are all obtained by modification treatment of a silane coupling agent.
Optionally, the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer has a thickness of 70-90 μm.
Optionally, the thickness of the epoxy cloud iron intermediate paint coating is 130-140 mu m.
Optionally, the thickness of the polysiloxane finish coating is 110-140 μm.
Compared with the prior art, the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer contains graphene and MXene materials, and the graphene and the MXene materials have extremely strong corrosion resistance, so that the corrosion resistance of the primer layer can be greatly improved, and the service life of the primer layer can be prolonged; the graphene and the MXene material have good electrical conductivity and thermal conductivity, and can form an electrical conduction network and a thermal conduction channel inside the primer layer, so that the overall performance of the primer layer is improved; the graphene and MXene materials have excellent mechanical properties, can enhance the stretching resistance and bending resistance of the primer layer, and improve the wear resistance and impact resistance of the primer layer; the graphene and the MXene material are nontoxic and harmless materials, and cannot cause harm to the environment and human bodies, so that the prepared primer layer has good environmental protection. The addition of the flaky Mxene can enable the primer layer coating to have thixotropic property, can reduce the addition amount of the solvent, and is beneficial to reducing the VOCs content of the primer layer coating. In addition, in the components of the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer, zinc powder is modified by a silane coupling agent, so that the compatibility and the dispersibility of the paint are improved, layering of the effective paint after construction can be effectively avoided, and the consistency and the stability of the anti-slip coefficient of the paint are ensured. The graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer is used as a first layer coating on the surface of the bridge steel structure, and has the main functions of providing good adhesive force and corrosion protection; the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer contains zinc-rich components, so that a firm anti-corrosion layer can be formed, and the steel structure is prevented from being corroded. The epoxy cloud iron intermediate paint coating is used as a second layer coating on the surface of the bridge steel structure, and the main function of the epoxy cloud iron intermediate paint coating is to increase the hardness and the wear resistance of the coating. The polysiloxane finish coating is used as a third layer coating on the surface of the bridge steel structure, and mainly aims to provide attractive appearance and a protective layer. The graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer, the epoxy cloud iron intermediate paint coating and the polysiloxane finish paint coating are matched with each other, so that the comprehensive protection of the bridge steel structure can be provided, the problems of corrosion, abrasion, oxidization and the like are prevented, and the service life of the bridge is prolonged.
Drawings
Fig. 1 is a schematic structural view of a bridge steel outer surface corrosion protection coating system combined with a steel structure in an embodiment of the present invention.
Reference numerals illustrate:
1.2 parts of graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer, 3 parts of epoxy cloud iron intermediate paint coating, 3 parts of polysiloxane finish paint coating, and 4 parts of steel structure.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
It should be noted that, without conflict, features in the embodiments of the present invention may be combined with each other. The terms "comprising," "including," "containing," and "having" are intended to be non-limiting, as other steps and other ingredients not affecting the result may be added. The above terms encompass the terms "consisting of … …" and "consisting essentially of … …". Materials, equipment, reagents are commercially available unless otherwise specified.
As shown in fig. 1, the embodiment of the invention provides an anticorrosive coating system for the outer surface of bridge steel, which comprises a graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer 1, an epoxy cloud iron intermediate paint coating 2 and a polysiloxane finish coating 3; the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer 1 is coated on the surface of the steel structure 4, and the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer 1 comprises the following components in parts by weight: 0.5-1.5 parts of graphene, 0.5-1.5 parts of flaky MXenee, 10-12 parts of epoxy resin, 62.5-67.8 parts of modified zinc powder, 1-2 parts of 2,4, 6-tris (dimethylaminomethyl) phenol, 11-13 parts of curing agent, 5-10 parts of ferrophosphorus powder, 5-8 parts of active diluent, 1-2 parts of zinc phosphate and 0.2-1 part of rare earth chelate; wherein the modified zinc powder is obtained by modification treatment of a silane coupling agent.
Compared with the prior art, the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer contains graphene and MXene materials, and the graphene and the MXene materials have extremely strong corrosion resistance, so that the corrosion resistance of the primer layer can be greatly improved, and the service life of the primer layer can be prolonged; the graphene and the MXene material have good electrical conductivity and thermal conductivity, and can form an electrical conduction network and a thermal conduction channel inside the primer layer, so that the overall performance of the primer layer is improved; the graphene and MXene materials have excellent mechanical properties, can enhance the stretching resistance and bending resistance of the primer layer, and improve the wear resistance and impact resistance of the primer layer; the graphene and the MXene material are nontoxic and harmless materials, and cannot cause harm to the environment and human bodies, so that the prepared primer layer has good environmental protection. The addition of the flaky Mxene can enable the primer layer coating to have thixotropic property, can reduce the addition amount of the solvent, and is beneficial to reducing the VOCs content of the primer layer coating. In addition, in the components of the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer, zinc powder is modified by a silane coupling agent, so that the compatibility and the dispersibility of the paint are improved, layering of the effective paint after construction can be effectively avoided, and the consistency and the stability of the anti-slip coefficient of the paint are ensured. The graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer is used as a first layer coating on the surface of the bridge steel structure, and has the main functions of providing good adhesive force and corrosion protection; the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer contains zinc-rich components, so that a firm anti-corrosion layer can be formed, and the steel structure is prevented from being corroded. The epoxy cloud iron intermediate paint coating is used as a second layer coating on the surface of the bridge steel structure, and the main function of the epoxy cloud iron intermediate paint coating is to increase the hardness and the wear resistance of the coating. The polysiloxane finish coating is used as a third layer coating on the surface of the bridge steel structure, and mainly aims to provide attractive appearance and a protective layer. The graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer, the epoxy cloud iron intermediate paint coating and the polysiloxane finish paint coating are matched with each other, so that the comprehensive protection of the bridge steel structure can be provided, the problems of corrosion, abrasion, oxidization and the like are prevented, and the service life of the bridge is prolonged.
In some embodiments of the present invention, the preparation method of the flaky Mxene includes:
step A1, adding carbon titanium aluminum into a mixed solution composed of lithium fluoride and hydrochloric acid, stirring and reacting for 24-48 hours at 30-50 ℃, and collecting a precipitation product;
and A2, adding water into the precipitate, and carrying out ultrasonic treatment, centrifugation, suction filtration and drying treatment in an inert gas atmosphere to obtain the flaky Mxene.
In some embodiments of the invention, the epoxy resin comprises one of a bisphenol a type epoxy resin, a bisphenol F type epoxy resin, a glycidyl ester epoxy resin, a cycloaliphatic epoxy resin, and a hydantoin epoxy resin.
In some embodiments of the invention, the reactive diluent comprises ethylene glycol diglycidyl ether. The ethylene glycol diglycidyl ether can participate in the curing reaction of the epoxy resin and become a part of the epoxy resin crosslinking network, so that compared with a volatile solvent, the volatilization of the solvent can be reduced, the VOCs content of the primer layer coating is reduced, and the curing speed of the primer layer coating can be higher.
In some embodiments of the invention, the rare earth chelate includes a rare earth ytterbium chelate and a rare earth yttrium chelate.
In some embodiments of the invention, the epoxy cloud iron intermediate paint coating comprises the following components in parts by weight: 30-40 parts of epoxy resin, 10-20 parts of modified cloud iron powder, 7-7.5 parts of talcum powder, 7-10 parts of modified aluminum oxide, 3-5 parts of barium sulfate, 5-7 parts of ferric oxide, 1.0-2.0 parts of 2,4, 6-tris (dimethylaminomethyl) phenol, 2-5 parts of active diluent, 20-22 parts of curing agent and 0.2-1 part of rare earth chelate; wherein the modified cloud iron powder and the modified alumina are both obtained by modification treatment of a silane coupling agent. The polysiloxane finish paint coating comprises the following components: 38-42 parts of polysiloxane resin, 29-31 parts of organosilicon modified acrylic resin, 14-16 parts of isocyanate, 1.5-2.5 parts of glass beads, 12-14 parts of modified titanium oxide, 1.5-2.5 parts of flaky titanium oxide, 1.5-2.5 parts of modified mica powder, 1.5-2.5 parts of modified flaky boron nitride powder, 0.1-1 part of modified graphene, 3.5-4.5 parts of propylene glycol monomethyl ether, 3.5-4.5 parts of isopropanol and 2.5-3.5 parts of ethanol; wherein the modified mica powder, the modified titanium oxide and the modified flaky boron nitride powder are all obtained by modification treatment of a silane coupling agent.
In the embodiment, the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer is used as a first layer coating on the surface of the bridge steel structure, and has the main functions of providing good adhesive force and corrosion protection; the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer contains zinc-rich components, so that a firm anti-corrosion layer can be formed, and the steel structure is prevented from being corroded. The epoxy cloud iron intermediate paint coating is used as a second layer of coating on the surface of the bridge steel structure, and the main function of the epoxy cloud iron intermediate paint coating is to increase the hardness and the wear resistance of the coating; the epoxy cloud iron intermediate paint coating contains epoxy resin and cloud iron particles, so that a hard protective layer can be formed, and the durability of the coating is improved; the cloud iron powder and the sexual alumina in the epoxy cloud iron intermediate paint coating are modified by the silane coupling agent, which is beneficial to improving the solid content of the epoxy cloud iron intermediate paint coating. The polysiloxane finish paint coating is used as a third layer coating on the surface of the bridge steel structure and mainly has the effects of providing attractive appearance and a protective layer, and the polysiloxane finish paint coating contains polysiloxane components and can form a smooth surface layer so as to improve the weather resistance and pollution resistance of the coating; the mica powder, titanium oxide and flaky boron nitride powder in the polysiloxane finish paint coating are all obtained by modification treatment of a silane coupling agent, so that the solid content of the polysiloxane finish paint coating is improved. The graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer, the epoxy cloud iron intermediate paint coating and the polysiloxane finish paint coating are matched with each other, so that the comprehensive protection of the bridge steel structure can be provided, the problems of corrosion, abrasion, oxidization and the like are prevented, and the service life of the bridge is prolonged.
In some embodiments of the invention, the graphene-Mxene double-nanoplatelet modified epoxy zinc-rich primer layer has a thickness of 70-90 μm; the thickness of the epoxy cloud iron intermediate paint coating is 130-140 mu m; the thickness of the polysiloxane finish paint coating is 110-140 mu m.
The invention will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. The epoxy resin used in the following examples and comparative examples is hydrogenated bisphenol A epoxy resin of the type EP-4080E, the reactive diluent used is ethylene glycol diglycidyl ether, and the rare earth chelate compound used is a rare earth ytterbium chelate compound of the type REC-1 and a rare earth yttrium chelate compound of the type REC-2 manufactured by Texaban materials science and technology Co., ltd. In Shanxi, according to a mass ratio of 1:1, the composition is as follows; the polysiloxane resin used was a model SH-023-7 manufactured by Hubei Long Shengshi New Material Co., ltd; the used organosilicon modified acrylic resin is the organosilicon modified acrylic resin with the model SH-024 produced by Hubei long-win four-sea new material Co., ltd; the isocyanate used was TMAIC-6291 isocyanate, manufactured by Guangzhou Shanghe chemical technology Co., ltd; the curing agent used consisted of 70% polyamide, 24% cycloaliphatic amine, 6% first adduct of polyetheramine and cyclic gas silane. In addition, the modified powders used in the following examples of the present invention include modified zinc powder, modified fine cloud iron powder and modified alumina, modified mica powder, modified titanium oxide and modified flaky boron nitride powder, which are all produced by the following methods:
b1, adding an ethanol solution containing 3- (2, 3-glycidoxy) propyl methyl diethoxy silane into powder to be modified to obtain a first reaction mixture;
b2, stirring the first reaction mixture at room temperature of 350r/min for reaction for 6 hours, separating a solid product, and drying to obtain modified powder.
Wherein the powder to be modified in the preparation process of the modified zinc powder, the modified cloud iron powder, the modified aluminum oxide, the modified mica powder, the modified titanium oxide and the modified flaky boron nitride powder is zinc powder, cloud iron powder, aluminum oxide, mica powder, titanium oxide and flaky boron nitride powder respectively.
Example 1 preparation of sheet Mxene
1.1, adding carbon titanium aluminum into a mixed solution composed of lithium fluoride and hydrochloric acid, stirring at 40 ℃ and 350r/min for reaction for 48 hours, and collecting a precipitate;
1.2, adding ethanol into the precipitate, performing ultrasonic treatment in ice water bath for 90min under nitrogen atmosphere, centrifuging for 60min at a rotation speed of 5000r/min, and performing suction filtration and drying treatment to obtain the flaky Mxene.
Example 2 preparation of modified graphene
2.1, carrying out ultrasonic stirring on graphene in N, N-Dimethylformamide (DMF) for 10min to obtain graphene dispersion, wherein the speed of ultrasonic stirring is 500r/min;
2.2, adding 3- (2, 3-glycidoxy) propyl methyl diethoxy silane into the graphene dispersion liquid, stirring at 100 ℃ and 350r/min for reaction for 3 hours, centrifuging at 5000r/min after the reaction is finished, and washing with DMF solvent to obtain the graphene oxide.
Example 3 preparation of graphene-Mxene double nanosheets modified epoxy Zinc-rich primer coating
3.1, preparing raw materials of graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer coating, wherein the raw materials of the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer coating comprise, by weight, 1 part of graphene, 1 part of flaky MXene, 11 parts of epoxy resin, 65 parts of modified zinc powder, 1.5 parts of 2,4, 6-tris (dimethylaminomethyl) phenol, 12 parts of curing agent, 7.5 parts of phosphorus iron powder, 6.5 parts of active diluent, 1.5 parts of zinc phosphate and 0.6 part of rare earth chelate;
3.2, uniformly mixing epoxy resin, zinc phosphate, modified zinc powder and ferrophosphorus powder, uniformly stirring and mixing a proper amount of graphene, flaky MXene, rare earth chelate, reactive diluent, ferrophosphorus powder and 2,4, 6-tris (dimethylaminomethyl) phenol, finally adding a curing agent, and uniformly stirring at 1500r/min to obtain the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer coating.
Example 4 preparation of epoxy cloud iron intermediate paint coating
4.1, preparing raw materials of an epoxy cloud iron intermediate paint coating, wherein the raw materials of the epoxy cloud iron intermediate paint coating comprise, by weight, 35 parts of epoxy resin, 15 parts of modified cloud iron powder, 7.2 parts of talcum powder, 8.5 parts of modified aluminum oxide, 4 parts of barium sulfate, 6 parts of ferric oxide, 1.5 parts of 2,4, 6-tris (dimethylaminomethyl) phenol, 3.5 parts of reactive diluent, 21 parts of curing agent and 0.6 part of rare earth chelate;
and 4.2, fully stirring and uniformly mixing the epoxy resin, the talcum powder, the modified aluminum oxide, the modified cloud iron powder, the barium sulfate and the ferric oxide, then adding the accelerator, the reactive diluent and the rare earth chelate, finally adding the curing agent, and uniformly stirring at 1500r/min to obtain the epoxy cloud iron intermediate paint coating.
Example 5 preparation of a Silicone topcoat coating
5.1, preparing raw materials of a polysiloxane finish paint coating, wherein the raw materials of the polysiloxane finish paint coating comprise, by weight, 40 parts of polysiloxane resin, 30 parts of organosilicon modified acrylic resin, 15 parts of isocyanate, 2 parts of glass beads, 13 parts of modified titanium oxide, 2 parts of flaky titanium oxide, 2 parts of modified mica powder, 2 parts of modified flaky boron nitride powder, 0.5 part of modified graphene, 4 parts of propylene glycol methyl ether, 4 parts of isopropanol and 3 parts of ethanol;
and 5.2, fully stirring and uniformly mixing polysiloxane resin, organosilicon modified acrylic resin, titanium oxide, glass beads and modified mica powder, then adding modified graphene, flaky titanium oxide and modified flaky boron nitride powder, finally adding isocyanate, propylene glycol methyl ether, isopropanol and ethanol, and uniformly stirring at 1500r/min to obtain the polysiloxane finish paint coating.
Example 6
The graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer coating prepared in example 3, the epoxy cloud iron intermediate paint coating prepared in example 4 and the polysiloxane top paint coating prepared in example 5 are used to prepare a bridge steel outer surface anti-corrosion coating system consisting of a graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer, an epoxy cloud iron intermediate paint coating and a polysiloxane top paint coating, wherein the thicknesses of the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer, the epoxy cloud iron intermediate paint coating and the polysiloxane top paint coating are 80 mu m, 140 mu m and 120 mu m respectively.
Example 7
The graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer coating prepared in example 3, the epoxy cloud iron intermediate paint coating prepared in example 4 and the polysiloxane top paint coating prepared in example 5 are used to prepare a bridge steel outer surface anti-corrosion coating system consisting of a graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer, an epoxy cloud iron intermediate paint coating and a polysiloxane top paint coating, wherein the thicknesses of the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer, the epoxy cloud iron intermediate paint coating and the polysiloxane top paint coating are 70 mu m, 130 mu m and 140 mu m respectively.
Example 8
The graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer coating prepared in example 3, the epoxy cloud iron intermediate paint coating prepared in example 4 and the polysiloxane top paint coating prepared in example 5 are used to prepare a bridge steel outer surface anti-corrosion coating system consisting of a graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer, an epoxy cloud iron intermediate paint coating and a polysiloxane top paint coating, wherein the thicknesses of the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer, the epoxy cloud iron intermediate paint coating and the polysiloxane top paint coating are 90 micrometers, 140 micrometers and 110 micrometers respectively.
Comparative example 1
The anticorrosive coating system used by the great bridge of the Yangtze river of the Ruhu river has the primer layer of epoxy zinc-rich primer with the thickness of 80um; the intermediate coat is epoxy cloud iron intermediate coat with the thickness of 50um, the finish coat is gray aluminum alkyd finish coat with the thickness of 80um.
Comparative example 2
The anti-corrosion coating system used by Shanghai Xu Puda bridge has a primer layer of aqueous inorganic zinc-rich primer with the thickness of 70um; the intermediate coat is epoxy cloud iron intermediate coat with the thickness of 100um, the finish coat is polyurethane finish coat with the thickness of 80um.
Comparative example 3
The anticorrosion coating system used by Shanghai Yangpu bridge has a base coat of epoxy zinc-rich primer with thickness of 80um; the intermediate coat is epoxy cloud iron intermediate coat with the thickness of 100um, the finish coat is chlorinated rubber thick model finish coat with the thickness of 45um.
Experimental example
The graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer coating prepared in example 3 was subjected to a test for the related properties, and the results are shown in table 1. As can be seen from table 1, in the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer coating prepared in example 3, the nonvolatile content is 80%, which indicates that the solid content of the coating is higher and the protective performance is excellent; the content of VOCs is 180g/L, and the content of VOCs is lower, which indicates that the paint has very low volatility and can not cause great pollution to the environment. The surface drying time of the coating is 0.8 hour, and the real drying time is 11 hours, which shows that the drying speed of the coating is higher. The heat resistance of the coating is 250 ℃, and a paint film is complete for 1 hour, which shows that the coating can bear higher temperature and is suitable for high-temperature working condition environments to a certain extent. The adhesive force (pull-open method) of the coating is 6.8MPa, the impact resistance is 50cm, which indicates that the coating has strong bonding capability with a substrate and good impact resistance. The coating can withstand a salt fog environment for 3000 hours under a coating of 90+/-10 mu m, single-phase corrosion at a scratch part is less than or equal to 2mm, and a non-scratch area is not foamed, rusted, cracked and peeled; the number shows that the paint has strong corrosion resistance to the environment. In conclusion, the product test result shows that the graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer coating prepared in the embodiment 3 has good stability, protective performance, coating effect and environmental protection performance.
TABLE 1
The epoxy cloud iron intermediate paint coating prepared in example 4 was tested for the relevant properties and the results are shown in table 2. As can be seen from table 2, the epoxy cloud iron intermediate paint coating prepared in example 4 has no hard lump after stirring and is in a uniform state; the coating has uniform mass of the mixture, has no coagulum phenomenon, and is suitable for construction. The non-volatile content in the coating is 81%, which indicates that the coating has higher solid content, and can improve the hardness, durability, adhesive force and chemical corrosion resistance of the coating. The surface drying time of the coating is 3.5h, and the actual drying time is 22h, which indicates that the drying speed of the coating is higher, the construction period can be shortened, and the production efficiency can be improved. The bending test result shows that the coating has better toughness and elasticity, and can keep the integrity and stability of the coating under the condition of certain deformation. Impact resistance test results show that the paint has good impact resistance and can prevent the occurrence of cracking, peeling and the like of the coating due to collision and the like in use. The adhesive force test result shows that the adhesive strength between the coating and the substrate is 5.6MPa, and the coating has the property of firm combination with the substrate, so that the coating can not fall off or peel off in the long-term use process. The VOCs content of the paint is 144g/L, which indicates that the content of volatile organic compounds in the paint is within a reasonable control range and meets the requirement of environmental protection standards.
TABLE 2
The polysiloxane top coat paint prepared in example 5 was subjected to the relevant performance test, and the results are shown in table 3. As can be seen from Table 3, the nonvolatile content of the paint is 75%, which indicates that the product has lower volatility and is not easy to volatilize, thus being beneficial to protecting environment and human health; the fineness of the paint is 30um, which indicates that the paint has higher quality, and the surface of the paint prepared by the paint is smooth and fine. The content of siloxane bond in the coating is 16%, which indicates that the coating contains a large amount of siloxane and has good heat resistance, water resistance and weather resistance. The surface drying time of the paint is 3 hours, and the actual drying time is 11 hours, which indicates that the paint has shorter drying time, can improve the construction efficiency and shorten the construction period. The bending test result shows that the coating has certain flexibility, and the surface is not easy to crack and foam. The impact resistance test result shows that the paint has better impact resistance and 50cm impact resistance, which shows that the paint has certain damage resistance when being impacted by force. The abrasion resistance test results show that the paint has good abrasion resistance and is not easy to produce phenomena such as scratch, abrasion and the like. The adhesive force test result shows that the adhesive force of the paint is 5.7MPa, which indicates that the adhesive strength between the paint and the base material is high, the paint is not easy to fall off, and the quality is reliable. The VOCs content of the paint is 308g/L, which indicates that the volatile organic compounds content in the paint is low, meets the environmental protection requirement, and has small influence on air quality.
TABLE 3 Table 3
The surface drying time and the actual drying time are tested and referred to GB/T1728-2020, the adhesive force test method is referred to GB/T5210-2006, the salt spray resistance test is referred to GB/T10125, the impact resistance test is according to GB/T1732-2020, the ageing resistance test is referred to GB/T1865-2009, and the VOCs content test is referred to GB/T38597.
Salt spray resistance test, aging resistance test and VOCs content test were carried out on the anticorrosive coating systems in examples 6 to 8 and comparative examples 1 to 3, respectively, and the test results are shown in Table 4. From Table 4, the results of the salt spray resistance and ageing resistance tests of comparative examples 1 to 3 are greatly different from those of examples 6 to 8, the salt spray resistance and the artificial ageing resistance are only 1000 to 2000 hours, and the salt spray resistance and the artificial ageing resistance of examples 6 to 8 are better and more in line with the requirements of bridge corrosion prevention. The corrosion protection coating systems of examples 6-8 have lower VOCs content and more in line with national standards and environmental protection concepts.
TABLE 4 Table 4
In addition, although the present invention is disclosed above, the scope of the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications will fall within the scope of the invention.
Claims (10)
1. The anti-corrosion coating system for the outer surface of the bridge steel is characterized by comprising a graphene-Mxene double-nano-sheet modified epoxy zinc-rich primer layer (1), an epoxy cloud iron intermediate paint coating (2) and a polysiloxane finish coating (3); the graphene-Mxene double-nanosheet modified epoxy zinc-rich primer layer (1) comprises the following components in parts by weight: 0.5-1.5 parts of graphene, 0.5-1.5 parts of flaky MXenee, 10-12 parts of epoxy resin, 62.5-67.8 parts of modified zinc powder, 1-2 parts of 2,4, 6-tris (dimethylaminomethyl) phenol, 11-13 parts of curing agent, 5-10 parts of ferrophosphorus powder, 5-8 parts of active diluent, 1-2 parts of zinc phosphate and 0.2-1 part of rare earth chelate; wherein the modified zinc powder is obtained by modification treatment of a silane coupling agent.
2. The bridge steel exterior surface corrosion protection coating system of claim 1, wherein the method of preparing the platy Mxene comprises:
step A1, adding carbon titanium aluminum into a mixed solution composed of lithium fluoride and hydrochloric acid, stirring and reacting for 24-48 hours at 30-50 ℃, and collecting a precipitation product;
and A2, adding water into the precipitate, and carrying out ultrasonic treatment, centrifugation, suction filtration and drying treatment in an inert gas atmosphere to obtain the flaky Mxene.
3. The bridge steel exterior surface corrosion protection coating system of claim 1, wherein the epoxy resin comprises one of bisphenol a type epoxy resin, bisphenol F type epoxy resin, glycidyl ester epoxy resin, cycloaliphatic epoxy resin, and hydantoin epoxy resin.
4. The bridge steel outer surface corrosion protection coating system of claim 1, wherein said reactive diluent comprises ethylene glycol diglycidyl ether.
5. The bridge steel outer surface corrosion protection coating system of claim 1, wherein the rare earth chelate comprises a rare earth ytterbium chelate and a rare earth yttrium chelate.
6. The bridge steel outer surface corrosion protection coating system according to claim 1, wherein the epoxy cloud iron intermediate paint coating (2) comprises the following components in parts by weight: 30-40 parts of epoxy resin, 10-20 parts of modified cloud iron powder, 7-7.5 parts of talcum powder, 7-10 parts of modified aluminum oxide, 3-5 parts of barium sulfate, 5-7 parts of ferric oxide, 1.0-2.0 parts of 2,4, 6-tris (dimethylaminomethyl) phenol, 2-5 parts of active diluent, 20-22 parts of curing agent and 0.2-1 part of rare earth chelate; wherein the modified cloud iron powder and the modified alumina are both obtained by modification treatment of a silane coupling agent.
7. The bridge steel outer surface corrosion protection coating system according to claim 1, wherein the polysiloxane topcoat coating (3) comprises the following components in parts by weight: 38-42 parts of polysiloxane resin, 29-31 parts of organosilicon modified acrylic resin, 14-16 parts of isocyanate, 1.5-2.5 parts of glass beads, 12-14 parts of modified titanium oxide, 1.5-2.5 parts of flaky titanium oxide, 1.5-2.5 parts of modified mica powder, 1.5-2.5 parts of modified flaky boron nitride powder, 0.1-1 part of modified graphene, 3.5-4.5 parts of propylene glycol monomethyl ether, 3.5-4.5 parts of isopropanol and 2.5-3.5 parts of ethanol; wherein the modified mica powder, the modified titanium oxide and the modified flaky boron nitride powder are all obtained by modification treatment of a silane coupling agent.
8. The bridge steel outer surface corrosion protection coating system of claim 1, wherein the graphene-Mxene double nano-sheet modified epoxy zinc-rich primer layer (1) has a thickness of 70-90 μιη.
9. The bridge steel outer surface corrosion protection coating system according to claim 1, wherein the thickness of the epoxy cloud intermediate paint coating (2) is 130-140 μm.
10. The bridge steel outer surface corrosion protection coating system according to claim 1, characterized in that the thickness of the polysiloxane top coat (3) is 110-140 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310966628.6A CN117025055A (en) | 2023-08-02 | 2023-08-02 | Anticorrosive coating system for outer surface of bridge steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310966628.6A CN117025055A (en) | 2023-08-02 | 2023-08-02 | Anticorrosive coating system for outer surface of bridge steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117025055A true CN117025055A (en) | 2023-11-10 |
Family
ID=88621947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310966628.6A Pending CN117025055A (en) | 2023-08-02 | 2023-08-02 | Anticorrosive coating system for outer surface of bridge steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117025055A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117820942A (en) * | 2024-03-04 | 2024-04-05 | 成都虹润制漆有限公司 | Bottom, middle and surface composite coating for railway bridge steel structure and preparation method thereof |
| CN117820942B (en) * | 2024-03-04 | 2024-05-10 | 成都虹润制漆有限公司 | Bottom, middle and surface composite coating for railway bridge steel structure and preparation method thereof |
-
2023
- 2023-08-02 CN CN202310966628.6A patent/CN117025055A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117820942A (en) * | 2024-03-04 | 2024-04-05 | 成都虹润制漆有限公司 | Bottom, middle and surface composite coating for railway bridge steel structure and preparation method thereof |
| CN117820942B (en) * | 2024-03-04 | 2024-05-10 | 成都虹润制漆有限公司 | Bottom, middle and surface composite coating for railway bridge steel structure and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101928507B (en) | Low-surface treatment rusty rust inhibiting primer for hot galvanized steel | |
| CN101116855B (en) | Method for preparing corrosion-protection composite coating for the steel metalwork | |
| CN110903734A (en) | Wear-resistant anticorrosive paint for polar ships and preparation method thereof | |
| CN108192403A (en) | A kind of solvent type zinc-aluminum paint | |
| CN105567080A (en) | High-temperature-resistant protective paint for ships | |
| CN110358406A (en) | Durable anticorrosive composite coating of a kind of self-repair type height and preparation method thereof | |
| WO2021035905A1 (en) | Anti-rust weather-resistant functional gradient type bottom-face integrated coating, and method for preparing coating layer | |
| CN114181616B (en) | Chromium-free low-temperature curing water-based zinc-aluminum coating and preparation method and application thereof | |
| CN111218171A (en) | Fluorosilicone type heat-insulating weather-resistant anticorrosive coating for island engineering steel base material and preparation method thereof | |
| CN1259553A (en) | Protective coating | |
| CN113698842A (en) | Solvent-free heavy-duty anticorrosive paint and preparation process thereof | |
| CN110845879A (en) | Novel environment-friendly water-based paint and preparation method thereof | |
| CN112745741A (en) | Bottom-coating anti-corrosion powder coating for coating base material, base material capable of avoiding chemical pretreatment and coating system | |
| CN100532476C (en) | Surface antiseptic treating agent for cable bridge frame | |
| AU2021402785A1 (en) | Polyurethane modified graphene microsheet and preparation method therefor | |
| CN114456683B (en) | Anti-corrosion finish paint and preparation method thereof | |
| CN100509975C (en) | Water polyacrylic acid composite coating | |
| CN111647337A (en) | Zinc-olefin anti-corrosion primer and application thereof | |
| CN105062307A (en) | Two-component anticorrosive coating and preparation method thereof | |
| CN111334161A (en) | Flexible self-repairing anticorrosive coating for inner wall of seawater steel pipeline and preparation method thereof | |
| CN108641543B (en) | Marine anticorrosive paint based on liquid metal and preparation method thereof | |
| CN110105493A (en) | The preparation process of the type of resistance to UV hydrophobic material | |
| KR101841596B1 (en) | Ceramic coatings comprising hybrid ceramic resin and fine ceramic powder and process for anticorrosive coating of steel construction using the same | |
| CN110396350A (en) | A kind of anticorrosive paint and its preparation method and application | |
| CN117025055A (en) | Anticorrosive coating system for outer surface of bridge steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |