CN109370364B - Nano anticorrosive paint for metal surface in acid-related environment and preparation method thereof - Google Patents
Nano anticorrosive paint for metal surface in acid-related environment and preparation method thereof Download PDFInfo
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- CN109370364B CN109370364B CN201811387877.5A CN201811387877A CN109370364B CN 109370364 B CN109370364 B CN 109370364B CN 201811387877 A CN201811387877 A CN 201811387877A CN 109370364 B CN109370364 B CN 109370364B
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- 239000002253 acid Substances 0.000 title claims abstract description 64
- 239000003973 paint Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 title claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 98
- 238000000576 coating method Methods 0.000 claims abstract description 63
- 239000011248 coating agent Substances 0.000 claims abstract description 49
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims abstract description 47
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000003822 epoxy resin Substances 0.000 claims abstract description 30
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 30
- 239000003085 diluting agent Substances 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 26
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 23
- 239000000126 substance Substances 0.000 claims abstract description 22
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 150000001412 amines Chemical class 0.000 claims abstract description 17
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 16
- 238000007665 sagging Methods 0.000 claims abstract description 15
- 239000008096 xylene Substances 0.000 claims abstract description 15
- 239000002270 dispersing agent Substances 0.000 claims abstract description 14
- 239000010445 mica Substances 0.000 claims abstract description 13
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 13
- 239000003607 modifier Substances 0.000 claims abstract description 13
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 13
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 13
- 238000009736 wetting Methods 0.000 claims abstract description 13
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical class [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims abstract description 12
- 239000006229 carbon black Substances 0.000 claims abstract description 11
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims abstract description 11
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229920000767 polyaniline Polymers 0.000 claims abstract description 11
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 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 abstract description 10
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims description 75
- 239000000203 mixture Substances 0.000 claims description 36
- 238000001723 curing Methods 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 19
- 239000000049 pigment Substances 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 14
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 7
- 239000007849 furan resin Substances 0.000 claims description 7
- 230000004048 modification Effects 0.000 claims description 7
- 238000012986 modification Methods 0.000 claims description 7
- 239000003208 petroleum Substances 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 5
- 239000004952 Polyamide Substances 0.000 claims description 5
- 229920002647 polyamide Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 3
- VYLVYHXQOHJDJL-UHFFFAOYSA-K cerium trichloride Chemical compound Cl[Ce](Cl)Cl VYLVYHXQOHJDJL-UHFFFAOYSA-K 0.000 claims description 3
- DLNAGPYXDXKSDK-UHFFFAOYSA-K cerium(3+);2-hydroxypropane-1,2,3-tricarboxylate Chemical compound [Ce+3].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O DLNAGPYXDXKSDK-UHFFFAOYSA-K 0.000 claims description 3
- BTVVNGIPFPKDHO-UHFFFAOYSA-K cerium(3+);octadecanoate Chemical compound [Ce+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O BTVVNGIPFPKDHO-UHFFFAOYSA-K 0.000 claims description 3
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 3
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 12
- 230000001070 adhesive effect Effects 0.000 abstract description 12
- 238000009776 industrial production Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 description 25
- 238000005260 corrosion Methods 0.000 description 25
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 239000000945 filler Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 5
- 239000003513 alkali Substances 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 5
- 230000033558 biomineral tissue development Effects 0.000 description 5
- 230000005587 bubbling Effects 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 5
- 239000002283 diesel fuel Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 5
- 239000005011 phenolic resin Substances 0.000 description 5
- 229920001568 phenolic resin Polymers 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- MTEZSDOQASFMDI-UHFFFAOYSA-N 1-trimethoxysilylpropan-1-ol Chemical compound CCC(O)[Si](OC)(OC)OC MTEZSDOQASFMDI-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 2
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000004848 polyfunctional curative Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical group C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 2
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 description 1
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 description 1
- 244000226021 Anacardium occidentale Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 244000028419 Styrax benzoin Species 0.000 description 1
- 235000000126 Styrax benzoin Nutrition 0.000 description 1
- 235000008411 Sumatra benzointree Nutrition 0.000 description 1
- UGACIEPFGXRWCH-UHFFFAOYSA-N [Si].[Ti] Chemical compound [Si].[Ti] UGACIEPFGXRWCH-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 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
- 229960002130 benzoin Drugs 0.000 description 1
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000020226 cashew nut Nutrition 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- QYDYPVFESGNLHU-UHFFFAOYSA-N elaidic acid methyl ester Natural products CCCCCCCCC=CCCCCCCCC(=O)OC QYDYPVFESGNLHU-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 239000006023 eutectic alloy Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 235000019382 gum benzoic Nutrition 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- QYDYPVFESGNLHU-KHPPLWFESA-N methyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC QYDYPVFESGNLHU-KHPPLWFESA-N 0.000 description 1
- 229940073769 methyl oleate Drugs 0.000 description 1
- 238000007709 nanocrystallization Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 125000005375 organosiloxane group Chemical group 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000012745 toughening agent Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 1
- 239000002383 tung oil Substances 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
- C09D161/14—Modified phenol-aldehyde condensates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention relates to a nano anticorrosive coating for metal surfaces in an acid-related environment and a preparation method thereof, belonging to the technical field of anticorrosive coatings, wherein the nano anticorrosive coating comprises a main agent, a curing agent and a diluent, and is characterized in that the weight ratio of the main agent to the curing agent is 100:15-50, wherein the main agent comprises modified phenolic resin, modified epoxy resin with an IPN structure, nano titanium dioxide, carbon black, barium sulfate, talcum powder, flaky mica powder, nano aluminum oxide, nano silicon carbide, polyaniline, rare earth substances, modified zinc phosphate, organic siloxane surface modifier, wetting dispersant, defoaming agent, anti-settling agent, anti-sagging agent, xylene and butanol; the curing agent comprises modified amine and xylene; diluents include xylene and butanol. The nano anticorrosive paint has excellent acid resistance, anticorrosive performance and adhesive force, and the preparation method is simple, easy to operate, low in equipment requirement and suitable for industrial production.
Description
Technical Field
The invention belongs to the technical field of anticorrosive coatings, and particularly relates to a nano anticorrosive coating for a metal surface in an acid-related environment and a preparation method thereof.
Background
Acid corrosion is a common corrosion type, and the acid corrosion is widely existed in acid production chemical equipment (such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid and the like) and oil-gas field production environment (containing H)2S、CO2Acid gases, etc.), acid rain atmosphere (presence of SO)2、NO2Etc.) and acid-related environments such as acid soils. The acidic corrosion mainly exists in two forms of hydrogen evolution corrosion and oxidation corrosion, and the corrosion to metal materials and equipment is very serious, which brings serious troubles to the storage and production of materials, products and equipment. Therefore, the search for an anticorrosion means which can ensure the smooth production and effectively prevent the corrosion damage of acid to production equipment is one of the hot points and difficulties in the anticorrosion field. The acid-resistant coating is one of effective means, can well protect the base material, prolong the service life of the base material and reduce the manufacturing cost and the maintenance cost of the anticorrosion project in an acid environment. The acid resistance of coatings used in acidic environments is an extremely important consideration, and this is mainly achieved by selecting or preparing suitable resins, pigments and fillers, curing agents, auxiliaries and the like.
Wherein, the resin is the main film forming substance of the paint and plays a decisive role in the acid resistance of the paint. At present, acid-resistant paint uses more resin as main materialThe patent CN103666201B discloses a long-acting acid-base-resistant solvent-free anticorrosive paint which is prepared by using low-viscosity epoxy resin and modified phenolic resin, matching with materials such as pigment, antirust material, filler, dispersant, defoamer, flatting agent, anti-sagging additive and the like, and matching with cashew nut shell phenol modified amine, modified fatty amine, catalyst and the like. The coating has the advantages of quick drying, no sagging, flat paint film, excellent physical and chemical properties, excellent long-acting protection effect on steel products, and wide application in coating of oil pipelines, ports, oil tanks, gas pipelines, steel products needing heavy corrosion resistance and the like. Patent CN201610669281.9 discloses an acid-resistant nano anticorrosive paint, which is composed of four components, namely methyl ethyl propyl butyl, wherein the component A is a matrix mixture, the component B is an auxiliary mixture, the component C is an acid-resistant mixture, and the component D is a pigment. The component A is composed of tung oil modified phenolic resin dispersion liquid and epoxy resin dispersion liquid, the component B is composed of mica powder, polyvinylpyrrolidone, ceramic powder, bentonite, zinc borate, Ni-42Mo-28Si powder, defoaming agent and quick drier, the component C is composed of nano silicon dioxide powder, nano titanium dioxide and titanium silicon eutectic alloy powder, and the component D is pigment. The paint has excellent acid resistance and corrosion resistance, is simple in preparation method, and can effectively prevent engineering buildings from being corroded by acid rain. Patent CN201310722898.9 discloses a glass flake coating with extremely strong acid and alkali resistance, which is composed of a main agent and a curing agent, wherein the mass ratio of the main agent to the curing agent is 7: 1. the main agent comprises modified micromolecular epoxy resin, an elastic epoxy toughening agent, a wetting dispersant, a defoaming agent, an anti-settling agent, an anti-sagging agent, a silane coupling agent, a pigment, glass flakes, aluminum oxide and a solvent; the curing agent consists of modified amine and a curing accelerator. The coating has excellent acid and alkali resistance. The patent CN 107722770A discloses an acid-resistant and corrosion-resistant coating for the inner wall of a hydraulic cylinder and a preparation method thereof, wherein the coating is prepared by taking one or more of acrylic resin, epoxy resin and organic resin as the resin, and adding silicon carbide, pigment, nano oxide, silicon dioxide and defoaming agentA curing agent and a solvent. The coating is coated on the inner wall of the hydraulic cylinder, so that the problem that the inner wall is easy to corrode and fall off is solved, and the service life of the hydraulic cylinder is prolonged. Patent CN201510690270.4 discloses an acid, wear and corrosion resistant flexible ceramic coating composition, which consists of a component A and a component B, wherein the component A consists of phenolic epoxy resin, polyvinyl butyral, cyclohexanone, ethanol, organic and inorganic antirust pigments, methyl oleate, zinc phosphate and a ceramic powder mixture; the component B is triethylene diamine. The coating has the characteristics of acid resistance, wear resistance and corrosion resistance, and has the advantages of easily available raw materials and low price. Patent CN02151766.5 provides an acid-resistant melt-bonded epoxy modified powder coating, which is prepared from resin E12 epoxy resin, curing agent dicyandiamide plus ester azole, modifier thermosetting phenolic resin and filler high-purity SiO2The coating can resist corrosion of 36.5 percent HCl. Patent CN201710848846.4 discloses an acid and alkali resistant metal powder coating and a preparation method thereof, wherein the materials used are bisphenol A epoxy resin, hydroxy acrylic resin and phenolic resin, 2-methylimidazole, aluminum silver powder, sand grain agent, titanium dioxide, calcium carbonate, benzoin and white carbon black, and the prepared powder material has good acid and alkali resistance. Patents CN201110068299.0, CN201110068291.4 and CN201110068292.9 disclose a primer, an intermediate paint (daub) and a finish paint, which are suitable for high temperature resistant glass flakes of a desulfurization device, and are acid resistant and corrosion resistant, and both of them use phenolic epoxy acrylic resin polymer as a main film forming substance, use methyl ethyl ketone peroxide as a hardener, use two or more of scaly graphite powder, flake mica powder, barite powder and glass flakes as pigments and fillers, and then use an accelerator, a leveling agent, an antifoaming agent and styrene as auxiliary materials. The coating has good high temperature resistance, corrosion resistance, solvent resistance and oxidation resistance. Compared with similar products, the corrosion resistance of sulfur dioxide and sulfuric acid is obviously improved, the anti-permeability is better, the construction operation is convenient, the material source is wide and easy to obtain, the material can be used on the inner wall of a steel structure desulfurizing tower of various wet desulphurization devices, and the economic and social efficiency of the desulphurization device in the aspect of environmental protection is obviously improved. Patents CN201110068294.8, CN201110068293.3 and CN201110068298.6 disclose high temperature used in inner wall of chimney respectivelyThe acid-resistant anticorrosive primer, finish paint and intermediate paint are all composed of organosilicon-phenolic aldehyde-epoxy resin polymer as a main film forming substance, alicyclic amine-aromatic amine as an epoxy hardener, two or more of scaly graphite powder, scaly mica powder, barium sulfate and glass flakes as pigments and fillers, and an antifoaming agent, xylene, cyclohexanone and butanol as solvents. The coating has excellent high temperature resistance, corrosion resistance, sulfur dioxide and sulfuric acid permeation resistance, and can be applied to the anticorrosion treatment of the inner walls of various steel structures and concrete chimneys.
The above patent publications relating to acid-resistant coatings have a certain application prospect, but all have one or more of the following problems: (1) the two resins, epoxy and phenolic, have advantages and disadvantages, and are difficult to use alone under severe conditions. For example, epoxy resin has very stable C-C bond and ether bond, good chemical stability, can resist alkali corrosion, has epoxy group and hydroxyl group with strong polarity in the structure, has excellent adhesion to metal base material, and forms a coating with high hardness, good wear resistance and low volume shrinkage, but only can resist dilute acid and poor heat resistance, and can only be used below 100 ℃. Phenolic resins have better acid and heat resistance than epoxy resins, but have a tendency to exhibit poor flexibility after film formation and to crack easily. Therefore, the two must be chemically modified or mixed to play their advantages and overcome their disadvantages, but the individual acid-resistant paint still has the problem of using unmodified single resin as the main film-forming material; (2) although most patents pay attention to the acid resistance in selecting the pigments and fillers, the functions of nanocrystallization filling and corrosion and self-repair of the pigments and fillers are rarely paid attention to; (3) currently, the coating is generally developed towards the environmental protection of water-based coatings, solvent-free coatings and powder coatings. Powder coatings and water-based coatings also appear in the acid-resistant coating patent, but the high construction condition requirements of the powder coatings (such as special coating technology, heating and curing and the like) can limit the use of the powder coatings on equipment and facilities working in an acid environment; the industrial water-based paint still has a plurality of defects which are difficult to overcome, so that the performance of the paint is difficult to ensure, and the paint is particularly stressed in an acidic environment with strong corrosivity; combining the problems with these two types of coatings and the fact that the current lack of coatings available in an acid environment is involved, it seems more feasible to carefully develop available high performance solvent-based acid resistant coatings.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a nano anticorrosive coating for metal surfaces in acid-related environments; the second purpose is to provide a preparation method of the nano anticorrosive paint for the metal surface in the acid-related environment.
In order to achieve the purpose, the invention provides the following technical scheme:
1. a nanometer anticorrosive paint for metal surfaces in acid-related environments comprises a main agent, a curing agent and a diluent, wherein the weight ratio of the main agent to the curing agent is 100: 15-50;
the main agent comprises, by weight, 15-25 parts of modified phenolic resin, 5-15 parts of modified epoxy resin with an IPN structure, 4-8 parts of nano titanium dioxide, 0.1-0.3 part of carbon black, 18-30 parts of barium sulfate, 8-12 parts of talcum powder, 4-7 parts of flaky mica powder, 2-3 parts of nano aluminum oxide, 2-3 parts of nano silicon carbide, 1-3 parts of polyaniline, 0.5-1 part of rare earth substances, 1-2 parts of modified zinc phosphate, 0.6-1.2 parts of organic siloxane surface modifier, 0.8-1.2 parts of wetting dispersant, 2.5-3.5 parts of defoaming agent, 1-3 parts of anti-settling agent, 1-3 parts of anti-sagging agent, 12-16 parts of xylene and 4-8 parts of butanol;
the curing agent comprises 75-85 parts of modified amine and 15-25 parts of dimethylbenzene by weight;
the diluent comprises 55-65 parts of dimethylbenzene and 35-45 parts of butanol by weight.
Preferably, the modified epoxy resin with the IPN structure is obtained by jointly modifying the epoxy resin by using the cage-type silsesquioxane and the furan resin.
Preferably, the rare earth substance is one or two of cerium oxide, cerium nitrate, cerium chloride, cerium citrate or cerium stearate.
Preferably, the organosiloxane surface modifier is one or both of gamma-aminopropyltriethoxysilane and gamma-glycidoxypropyltrimethoxysilane.
Preferably, the wetting dispersant is one of AFCONA5044, BYK-Anti-Terra-203, BYK-Anti-Terra-204 or BYK-Anti-Terra-U5.
Preferably, the defoaming agent is a mixture formed by mixing AFCONA2722 or BYKA530 and LS500 petroleum resin according to a weight ratio of 0.2: 2-5.
Preferably, the anti-settling agent is one or two of polyethylene wax 202, BYK-7410ET or BYK-430.
Preferably, the anti-sagging agent is one or two of polyamide wax or BYK-430.
Preferably, the modified amine is one of JH-5390G or NX-2016.
2. The preparation method of the nano anticorrosive paint for the metal surface in the acid-related environment comprises the following steps:
(1) preparing the main agent
A. Modification of the nano pigment: mixing nano titanium dioxide, nano aluminum oxide and nano silicon carbide uniformly, adding an organic siloxane surface modifier, and mixing uniformly again to prepare a modified nano mixture for later use;
B. material mixing and grinding: b, uniformly mixing the modified nano mixture prepared in the step A with modified phenolic resin, modified epoxy resin with an IPN structure, carbon black, barium sulfate, talcum powder, flaky mica powder, polyaniline, rare earth substances, modified zinc phosphate, wetting dispersant, defoaming agent, xylene and butanol, and grinding to the fineness of 60-80 mu m to prepare a mixture for later use;
C. paint mixing: adding an anti-settling agent and an anti-sagging agent into the mixture obtained in the step B under the stirring condition, uniformly mixing, filtering, and taking precipitates to obtain a main agent for later use;
(2) preparation of the curing agent
Uniformly mixing modified amine and xylene to obtain a curing agent for later use;
(3) preparation of the Diluent
Uniformly mixing dimethylbenzene and butanol to obtain a diluent for later use;
(4) preparation of nano anticorrosive paint
And (3) uniformly mixing the main agent obtained in the step (1) and the curing agent obtained in the step (2) according to the weight ratio of 100:15-50, adding the diluent obtained in the step (3) according to the actual viscosity requirement, and uniformly mixing the mixture again.
The invention has the beneficial effects that: the invention provides a nano anticorrosive paint for metal surfaces in an acid-related environment and a preparation method thereof. Firstly, in the aspect of main film-forming substances, the chemically modified phenolic resin and the modified epoxy resin with the IPN structure are spliced, the respective defects of the phenolic resin and the modified epoxy resin are overcome, the performance advantages of the phenolic resin and the modified epoxy resin are fully exerted, and the IPN structure is introduced to generate forced compatibility and synergistic effect, which plays an important role in increasing the adhesive force, chemical inertness and the fusion degree of pigments and fillers of the coating and improving the overall activity and consistency of the coating. In addition, three corrosion inhibition components of polyaniline, rare earth substances and modified zinc phosphate are introduced, can play a role in corrosion inhibition and self-repair, promote the rapid formation of a surface passivation layer, play a role in a second barrier on a corrosion medium, further effectively inhibit the occurrence of corrosion, and ensure the corrosion resistance and self-repair performance of the coating. Finally, in the aspect of coating form, the nano anticorrosive coating belongs to a solvent type, has low requirements on construction occasions and construction conditions, is simple to construct, can be thickly coated, avoids the defects of powder coating and water-based coating which are difficult to overcome, ensures the coating performance to be reliable, and can be better used for products such as oil tanks, oil pipelines, gas pipelines, acid-producing chemical equipment and the like made of metal materials in acid-involved environments. The preparation method of the nano anticorrosive paint is simple, easy to operate, low in equipment requirement and suitable for industrial production.
Detailed Description
The preferred embodiments of the present invention will be described in detail below.
Example 1
Preparation of nano anticorrosive paint for metal surface in acid-related environment
(1) Preparing the main agent
A. Modification of the nano pigment: uniformly mixing 5 parts of nano titanium dioxide, 2 parts of nano alumina and 2 parts of nano silicon carbide, adding 1 part of organic siloxane surface modifier (gamma-glycidyl ether oxypropyl trimethoxy silane), and uniformly mixing to obtain a modified nano mixture for later use;
B. material mixing and grinding: mixing the modified nano mixture prepared in the step A with 20 parts of modified phenolic resin, 6 parts of modified epoxy resin with an IPN structure obtained by jointly modifying cage-type silsesquioxane and furan resin, 0.2 part of carbon black, 19 parts of barium sulfate, 9 parts of talcum powder, 5 parts of flaky mica powder, 2 parts of polyaniline, 0.5 part of rare earth substance (cerium nitrate), 1.3 parts of modified zinc phosphate, 1 part of wetting dispersant (AFCONA5044), 3 parts of defoaming agent (mixed with 0.2 part of AFCONA2722 and 2.8 parts of LS500 petroleum resin), 14 parts of xylene and 5 parts of butanol, grinding to the fineness of 60 mu m after mixing uniformly, and preparing a mixture for later use;
C. paint mixing: adding 2 parts of anti-settling agent (polyethylene wax 202) and 2 parts of anti-sagging agent (polyamide wax) into the mixture obtained in the step B under the stirring condition, uniformly mixing, filtering, and taking precipitate to obtain a main agent for later use;
(2) preparation of the curing agent
Uniformly mixing 82 parts of modified amine (JH-5390G) and 18 parts of dimethylbenzene to obtain a curing agent for later use;
(3) preparation of the Diluent
Uniformly mixing 60 parts of dimethylbenzene and 40 parts of butanol to obtain a diluent for later use;
(4) preparation of nano anticorrosive paint
And (3) uniformly mixing the main agent obtained in the step (1) and the curing agent obtained in the step (2) according to the weight ratio of 100:20, adding the diluent obtained in the step (3) to adjust the viscosity, and uniformly mixing.
The nano anticorrosive paint prepared above is tested, and the test results are as follows: drying time of the coating: the surface dryness is less than or equal to 0.5h, and the actual dryness is less than or equal to 28 h; flexibility: less than or equal to 1 cm; impact resistance: not less than 50 kg/cm; adhesion force: grade 1; hardness: not less than 3H; acid resistance (10% HCl + 3% HF solution, 50 ℃): the adhesive force is not obviously changed and has no bubbles or bubbles, and the surface has certain light loss; after the paint is tested for 168 hours under the conditions of total pressure of 15MPa (containing 2.0MPa hydrogen sulfide and 1.5MPa carbon dioxide) and total mineralization of 67000 in an oil-gas field condensate aqueous solution (containing 5% diesel oil) and 70 ℃, the surface of the coating has light loss, but the adhesive force of the coating is not obviously changed, and the phenomena of bubbling and shedding are avoided.
Example 2
Preparation of nano anticorrosive paint for metal surface in acid-related environment
(1) Preparing the main agent
A. Modification of the nano pigment: uniformly mixing 6 parts of nano titanium dioxide, 2 parts of nano aluminum oxide and 2 parts of nano silicon carbide, adding 1 part of organic siloxane surface modifier (gamma-glycidyl ether oxypropyl trimethoxy silane), and uniformly mixing to obtain a modified nano mixture for later use;
B. material mixing and grinding: b, uniformly mixing the modified nano mixture prepared in the step A with 18 parts of modified phenolic resin, 8 parts of modified epoxy resin with an IPN structure obtained by jointly modifying epoxy resin by using cage-type silsesquioxane and furan resin, 0.2 part of carbon black, 18 parts of barium sulfate, 9 parts of talcum powder, 5 parts of scaly mica powder, 2 parts of polyaniline, 0.5 part of rare earth substances (0.3 part of cerium nitrate and 0.2 part of cerium citrate), 1 part of modified zinc phosphate, 1 part of wetting dispersant (BYK-Anti-Terra-204), 3 parts of defoaming agent (0.2 part of BYKA530 and 2.8 parts of LS500 petroleum resin), 15 parts of xylene and 5 parts of butanol, grinding to the fineness of 70 mu m to prepare a mixture for later use;
C. paint mixing: adding 1.3 parts of anti-settling agent (BYK-7410ET) and 2 parts of anti-sagging agent (BYK-430) into the mixture obtained in the step B under the stirring condition, uniformly mixing, filtering, and taking precipitate to obtain a main agent for later use;
(2) preparation of the curing agent
Uniformly mixing 84 parts of modified amine (JH-5390G) and 16 parts of dimethylbenzene to obtain a curing agent for later use;
(3) preparation of the Diluent
Uniformly mixing 62 parts of dimethylbenzene and 38 parts of butanol to obtain a diluent for later use;
(4) preparation of nano anticorrosive paint
And (3) uniformly mixing the main agent obtained in the step (1) and the curing agent obtained in the step (2) according to the weight ratio of 100:25, adding the diluent obtained in the step (3) to adjust the viscosity, and uniformly mixing.
The nano anticorrosive paint prepared above is tested, and the test results are as follows: drying time of the coating: the surface dryness is less than or equal to 0.5h, and the actual dryness is less than or equal to 24 h; flexibility: less than or equal to 1 cm; impact resistance: not less than 50 kg/cm; adhesion force: grade 1; hardness: not less than 4H; acid resistance (10% HCl + 3% HF solution, 50 ℃): the adhesive force is unchanged, no bubble exists, and no bubble exists for more than 48 hours; after the paint is tested for 168 hours under the conditions of total pressure of 15MPa (containing 2.0MPa hydrogen sulfide and 1.5MPa carbon dioxide) and total mineralization of 67000 in an oil-gas field condensate aqueous solution (containing 5% diesel oil) and 70 ℃, the surface of the coating has light loss, but the adhesive force of the coating is not obviously changed, and the phenomena of bubbling and shedding are avoided.
Example 3
Preparation of nano anticorrosive paint for metal surface in acid-related environment
(1) Preparing the main agent
A. Modification of the nano pigment: uniformly mixing 5 parts of nano titanium dioxide, 2.5 parts of nano aluminum oxide and 2 parts of nano silicon carbide, adding 0.6 part of organic siloxane surface modifier (gamma-aminopropyl triethoxysilane), and uniformly mixing to obtain a modified nano mixture for later use;
B. material mixing and grinding: mixing the modified nano mixture prepared in the step A with 18 parts of modified phenolic resin, 12 parts of modified epoxy resin with an IPN structure obtained by modifying epoxy resin together by cage type silsesquioxane and furan resin, 0.1 part of carbon black, 20 parts of barium sulfate, 8 parts of talcum powder, 4 parts of flaky mica powder, 1 part of polyaniline, 0.5 part of rare earth substances (0.3 part of cerium nitrate and 0.2 part of cerium stearate), 1 part of modified zinc phosphate, 0.8 part of wetting dispersant (AFCONA5044), 3 parts of defoaming agent (mixing 0.2 part of BYKA530 and 2.8 parts of LS500 petroleum resin), 16 parts of xylene and 4 parts of butanol, grinding to the fineness of 80 mu m after mixing uniformly, and preparing a mixture for later use;
C. paint mixing: adding 1 part of anti-settling agent (BYK-430) and 2 parts of anti-sagging agent (1 part of polyamide wax and 1 part of BYK-430) into the mixture obtained in the step B under the stirring condition, uniformly mixing, filtering, and taking precipitate to obtain a main agent for later use;
(2) preparation of the curing agent
Uniformly mixing 85 parts of modified amine (JH-5390G) and 15 parts of dimethylbenzene to obtain a curing agent for later use;
(3) preparation of the Diluent
Uniformly mixing 65 parts of dimethylbenzene and 35 parts of butanol to obtain a diluent for later use;
(4) preparation of nano anticorrosive paint
And (3) uniformly mixing the main agent obtained in the step (1) and the curing agent obtained in the step (2) according to the weight ratio of 100:30, adding the diluent obtained in the step (3) to adjust the viscosity, and uniformly mixing.
The nano anticorrosive paint prepared above is tested, and the test results are as follows: drying time of the coating: the surface dryness is less than or equal to 0.5h, and the actual dryness is less than or equal to 24 h; flexibility: less than or equal to 1 cm; impact resistance: not less than 50 kg/cm; adhesion force: grade 1; hardness: not less than 4H; acid resistance (10% HCl + 3% HF solution, 50 ℃): the adhesive force is not obviously changed and no bubbles or bubbles exist for more than 48 hours; after the paint is tested for 168 hours under the conditions of total pressure of 15MPa (containing 2.0MPa hydrogen sulfide and 1.5MPa carbon dioxide) and total mineralization of 67000 in an oil-gas field condensate aqueous solution (containing 5% diesel oil) and 70 ℃, the surface of the coating has light loss, but the adhesive force of the coating is not obviously changed, and the phenomena of bubbling and shedding are avoided.
Example 4
Preparation of nano anticorrosive paint for metal surface in acid-related environment
(1) Preparing the main agent
A. Modification of the nano pigment: uniformly mixing 4 parts of nano titanium dioxide, 3 parts of nano aluminum oxide and 2.5 parts of nano silicon carbide, adding 1.2 parts of organic siloxane surface modifier (gamma-aminopropyl triethoxysilane), and uniformly mixing to obtain a modified nano mixture for later use;
B. material mixing and grinding: mixing the modified nano mixture prepared in the step A with 15 parts of modified phenolic resin, 15 parts of modified epoxy resin with an IPN structure obtained by modifying epoxy resin together by cage type silsesquioxane and furan resin, 0.3 part of carbon black, 25 parts of barium sulfate, 10 parts of talcum powder, 6 parts of flaky mica powder, 3 parts of polyaniline, 0.8 part of rare earth substance (cerium chloride), 1.5 parts of modified zinc phosphate, 1.2 parts of wetting dispersant (BYK-Anti-Terra-203), 2.5 parts of defoaming agent (mixing 0.2 part of AFCONA2722 and 2.3 parts of LS500 petroleum resin), 12 parts of xylene and 6 parts of butanol, grinding to the fineness of 70 mu m to prepare a mixture for later use;
C. paint mixing: adding 2.5 parts of an anti-settling agent (1 part of polyethylene wax 202 and 1.5 parts of BYK-430) and 1 part of an anti-sagging agent (BYK-430) into the mixture obtained in the step B under the stirring condition, uniformly mixing, filtering, and taking precipitates to obtain a main agent for later use;
(2) preparation of the curing agent
Uniformly mixing 75 parts of modified amine (NX-2016) and 25 parts of dimethylbenzene to obtain a curing agent for later use;
(3) preparation of the Diluent
Uniformly mixing 55 parts of dimethylbenzene and 45 parts of butanol to obtain a diluent for later use;
(4) preparation of nano anticorrosive paint
And (3) uniformly mixing the main agent obtained in the step (1) and the curing agent obtained in the step (2) according to the weight ratio of 100:15, adding the diluent obtained in the step (3) to adjust the viscosity, and uniformly mixing.
The nano anticorrosive paint prepared above is tested, and the test results are as follows: drying time of the coating: the surface dryness is less than or equal to 0.5h, and the actual dryness is less than or equal to 30 h; flexibility: less than or equal to 1 cm; impact resistance: not less than 50 kg/cm; adhesion force: grade 1; hardness: not less than 3H; acid resistance (10% HCl + 3% HF solution, 50 ℃): the adhesive force is not obviously changed, no bubbles or bubbles exist, and the surface light loss is obvious when the time is more than or equal to 48 hours; after the coating is tested for 168 hours under the conditions of total pressure of 15MPa (containing 2.0MPa hydrogen sulfide and 1.5MPa carbon dioxide) and total mineralization of 67000 in a condensate aqueous solution (containing 5 percent diesel oil) of an oil-gas field and 70 ℃, the surface of the coating has light loss, and slight bubbling appears at individual positions, but the adhesive force of the coating is not obviously changed and has no shedding phenomenon.
Example 5
Preparation of nano anticorrosive paint for metal surface in acid-related environment
(1) Preparing the main agent
A. Modification of the nano pigment: uniformly mixing 8 parts of nano titanium dioxide, 3 parts of nano aluminum oxide and 3 parts of nano silicon carbide, adding 1.2 parts of organic siloxane surface modifier (0.6 part of gamma-glycidoxypropyltrimethoxysilane and 0.6 part of gamma-aminopropyltriethoxysilane), and uniformly mixing to obtain a modified nano mixture for later use;
B. material mixing and grinding: b, uniformly mixing the modified nano mixture prepared in the step A with 25 parts of modified phenolic resin, 5 parts of modified epoxy resin with an IPN structure obtained by jointly modifying epoxy resin by cage-type silsesquioxane and furan resin, 0.1 part of carbon black, 30 parts of barium sulfate, 12 parts of talcum powder, 7 parts of flaky mica powder, 2 parts of polyaniline, 1 part of rare earth substance (cerium oxide), 2 parts of modified zinc phosphate, 0.8 part of wetting dispersant (BYK-Anti-Terra-U5), 3.5 parts of defoaming agent (mixed by 0.2 part of BYKA530 and 3.3 parts of LS500 petroleum resin), 14 parts of xylene and 8 parts of butanol, grinding to the fineness of 60 mu m, and preparing a mixture for later use;
C. paint mixing: adding 3 parts of anti-settling agent (1.5 parts of BYK-7410ET and 1.5 parts of BYK-430) and 3 parts of anti-sagging agent (1.5 parts of BYK-430 and 1.5 parts of polyamide wax) into the mixture obtained in the step B under the stirring condition, uniformly mixing, filtering, and taking precipitate to obtain a main agent for later use;
(2) preparation of the curing agent
Uniformly mixing 80 parts of modified amine (NX-2016) and 20 parts of dimethylbenzene to obtain a curing agent for later use;
(3) preparation of the Diluent
Uniformly mixing 63 parts of dimethylbenzene and 37 parts of butanol to obtain a diluent for later use;
(4) preparation of nano anticorrosive paint
And (3) uniformly mixing the main agent obtained in the step (1) and the curing agent obtained in the step (2) according to the weight ratio of 100:50, adding the diluent obtained in the step (3) to adjust the viscosity, and uniformly mixing.
The nano anticorrosive paint prepared above is tested, and the test results are as follows: drying time of the coating: the surface dryness is less than or equal to 0.5h, and the actual dryness is less than or equal to 18 h; flexibility: less than or equal to 2 cm; impact resistance: 50 kg-cm; adhesion force: 2, level; hardness: not less than 4H; acid resistance (10% HCl + 3% HF solution, 50 ℃): the adhesive force is not obviously changed and has no bubbles or bubbles and the surface has light loss when being more than or equal to 48 hours; after the paint is tested for 168 hours under the conditions of total pressure of 15MPa (containing 2.0MPa hydrogen sulfide and 1.5MPa carbon dioxide) and total mineralization of 67000 in an oil-gas field condensate aqueous solution (containing 5% diesel oil) and 70 ℃, the surface of the coating has light loss, but the adhesive force of the coating is not obviously changed, and the phenomena of bubbling and shedding are avoided.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (9)
1. A nanometer anticorrosive paint for metal surfaces in acid-related environments comprises a main agent, a curing agent and a diluent, and is characterized in that the weight ratio of the main agent to the curing agent is 100: 15-50;
the main agent comprises, by weight, 15-25 parts of modified phenolic resin, 5-15 parts of modified epoxy resin with an IPN structure, 4-8 parts of nano titanium dioxide, 0.1-0.3 part of carbon black, 18-30 parts of barium sulfate, 8-12 parts of talcum powder, 4-7 parts of flaky mica powder, 2-3 parts of nano aluminum oxide, 2-3 parts of nano silicon carbide, 1-3 parts of polyaniline, 0.5-1 part of rare earth substances, 1-2 parts of modified zinc phosphate, 0.6-1.2 parts of organic siloxane surface modifier, 0.8-1.2 parts of wetting dispersant, 2.5-3.5 parts of defoaming agent, 1-3 parts of anti-settling agent, 1-3 parts of anti-sagging agent, 12-16 parts of xylene and 4-8 parts of butanol; the modified epoxy resin with the IPN structure is obtained by jointly modifying epoxy resin with cage-type silsesquioxane and furan resin;
the curing agent comprises 75-85 parts of modified amine and 15-25 parts of dimethylbenzene by weight;
the diluent comprises 55-65 parts of dimethylbenzene and 35-45 parts of butanol by weight.
2. The nano anticorrosive coating for metal surfaces in acid-related environments according to claim 1, wherein the rare earth substance is one or two of cerium oxide, cerium nitrate, cerium chloride, cerium citrate or cerium stearate.
3. The nano anticorrosive coating for metal surfaces in acid-related environments according to claim 1, wherein the organic siloxane surface modifier is one or both of gamma-aminopropyltriethoxysilane or gamma-glycidoxypropyltrimethoxysilane.
4. The nano anticorrosive paint for metal surfaces in acid-related environments as claimed in claim 1, wherein the wetting dispersant is one of AFCONA5044, BYK-Anti-Terra-203, BYK-Anti-Terra-204 or BYK-Anti-Terra-U5.
5. The nano anticorrosive paint for metal surfaces in acid-related environments as claimed in claim 1, wherein the defoaming agent is a mixture of AFCONA2722 or BYKA530 and LS500 petroleum resin in a weight ratio of 0.2: 2-5.
6. The nano anticorrosive paint for metal surfaces in acid-related environments, according to claim 1, wherein the anti-settling agent is one or two of polyethylene wax 202, BYK-7410ET or BYK-430.
7. The nano anticorrosive paint for metal surfaces in acid-related environments as claimed in claim 1, wherein the anti-sagging agent is one or both of polyamide wax and BYK-430.
8. The nano anticorrosive coating for metal surfaces in acid-related environments, according to claim 1, wherein the modified amine is one of JH-5390G or NX-2016.
9. The method for preparing the nano anticorrosive paint for the metal surface in the acid-related environment according to any one of claims 1 to 8, characterized by comprising the following steps:
(1) preparing the main agent
A. Modification of the nano pigment: mixing nano titanium dioxide, nano aluminum oxide and nano silicon carbide uniformly, adding an organic siloxane surface modifier, and mixing uniformly again to prepare a modified nano mixture for later use;
B. material mixing and grinding: b, uniformly mixing the modified nano mixture prepared in the step A with modified phenolic resin, modified epoxy resin with an IPN structure, carbon black, barium sulfate, talcum powder, flaky mica powder, polyaniline, rare earth substances, modified zinc phosphate, wetting dispersant, defoaming agent, xylene and butanol, and grinding to the fineness of 60-80 mu m to prepare a mixture for later use;
C. paint mixing: adding an anti-settling agent and an anti-sagging agent into the mixture obtained in the step B under the stirring condition, uniformly mixing, filtering, and taking precipitates to obtain a main agent for later use;
(2) preparation of the curing agent
Uniformly mixing modified amine and xylene to obtain a curing agent for later use;
(3) preparation of the Diluent
Uniformly mixing dimethylbenzene and butanol to obtain a diluent for later use;
(4) preparation of nano anticorrosive paint
And (3) uniformly mixing the main agent obtained in the step (1) and the curing agent obtained in the step (2) according to the weight ratio of 100:15-50, adding the diluent obtained in the step (3) according to the actual viscosity requirement, and uniformly mixing the mixture again.
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| CN110862769A (en) * | 2019-12-26 | 2020-03-06 | 安徽银龙泵阀股份有限公司 | Environment-friendly anticorrosive paint for pump valves and preparation method thereof |
| CN111410889A (en) * | 2020-04-24 | 2020-07-14 | 容七英 | Acid-resistant anticorrosive paint for inner wall of petrochemical equipment |
| CN114075402A (en) * | 2020-08-12 | 2022-02-22 | 中国石油化工股份有限公司 | High-temperature-resistant and corrosion-resistant coating for sulfur-containing heat exchanger, preparation method of coating and corrosion-resistant shell-and-tube heat exchanger |
| CN112194957A (en) * | 2020-09-15 | 2021-01-08 | 西安科技大学 | Nano heavy-duty anticorrosive paint and preparation method thereof |
| CN113637394A (en) * | 2021-08-11 | 2021-11-12 | 安徽桑瑞斯环保新材料有限公司 | Powder coating with high salt spray corrosion resistance and preparation method thereof |
| CN116200094B (en) * | 2021-11-30 | 2023-11-10 | 中国石油化工股份有限公司 | High-barrier nano coating and preparation method thereof |
| CN116410648B (en) * | 2023-05-06 | 2024-03-19 | 安徽众博新材料有限公司 | Fast-curing phenolic epoxy paint |
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| CN102702930A (en) * | 2012-05-03 | 2012-10-03 | 盘锦中际特种管材制造有限公司 | Preparation method of boric high-heat-resistance wear-resistant heavy-duty inner coating for petroleum pipeline |
| CN103666201B (en) * | 2013-12-13 | 2016-05-18 | 天津科瑞达涂料化工有限公司 | Long-acting acid and alkali-resistance, solvent-free anticorrosive paint and preparation method thereof and application |
| CN106810995B (en) * | 2015-11-30 | 2019-06-07 | 中国科学院金属研究所 | Nanometer alumina modified boron phenolic epoxy-organic silicon wear-and corrosion-resistant material and preparation |
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