CN101643620A - Environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating and preparation method thereof - Google Patents
Environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating and preparation method thereof Download PDFInfo
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- CN101643620A CN101643620A CN200810012660A CN200810012660A CN101643620A CN 101643620 A CN101643620 A CN 101643620A CN 200810012660 A CN200810012660 A CN 200810012660A CN 200810012660 A CN200810012660 A CN 200810012660A CN 101643620 A CN101643620 A CN 101643620A
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- CN
- China
- Prior art keywords
- iron oxide
- micaceous iron
- polyaniline
- modified micaceous
- environmental
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Links
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 239000011248 coating agent Substances 0.000 title claims abstract description 71
- 238000000576 coating method Methods 0.000 title claims abstract description 71
- 229920000767 polyaniline Polymers 0.000 title claims abstract description 70
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 claims abstract description 36
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000467 phytic acid Substances 0.000 claims abstract description 36
- 229940068041 phytic acid Drugs 0.000 claims abstract description 36
- 235000002949 phytic acid Nutrition 0.000 claims abstract description 36
- 239000000049 pigment Substances 0.000 claims abstract description 27
- 239000011247 coating layer Substances 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 80
- 239000003795 chemical substances by application Substances 0.000 claims description 74
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 40
- 229910052742 iron Inorganic materials 0.000 claims description 40
- 229910052618 mica group Inorganic materials 0.000 claims description 40
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 32
- 239000010445 mica Substances 0.000 claims description 30
- 239000007864 aqueous solution Substances 0.000 claims description 24
- 229920005989 resin Polymers 0.000 claims description 24
- 239000011347 resin Substances 0.000 claims description 24
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 20
- 239000006185 dispersion Substances 0.000 claims description 17
- 239000002904 solvent Substances 0.000 claims description 17
- 239000013530 defoamer Substances 0.000 claims description 16
- 239000000945 filler Substances 0.000 claims description 16
- 238000007665 sagging Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 14
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 12
- 239000004593 Epoxy Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229920003987 resole Polymers 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 7
- 239000004160 Ammonium persulphate Substances 0.000 claims description 5
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 5
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 5
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 5
- 235000019395 ammonium persulphate Nutrition 0.000 claims description 5
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 206010013786 Dry skin Diseases 0.000 claims description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000012153 distilled water Substances 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 239000002345 surface coating layer Substances 0.000 claims description 4
- 238000009827 uniform distribution Methods 0.000 claims description 4
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
- 239000004159 Potassium persulphate Substances 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 2
- 235000019394 potassium persulphate Nutrition 0.000 claims description 2
- 238000013019 agitation Methods 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 15
- 230000007797 corrosion Effects 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 6
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 238000006116 polymerization reaction Methods 0.000 abstract description 2
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 235000013980 iron oxide Nutrition 0.000 description 36
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 21
- 239000003973 paint Substances 0.000 description 20
- 229910000831 Steel Inorganic materials 0.000 description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 13
- 239000007921 spray Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 11
- 239000004576 sand Substances 0.000 description 11
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 10
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 10
- 238000007605 air drying Methods 0.000 description 10
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 10
- 239000007788 liquid Substances 0.000 description 10
- 239000012188 paraffin wax Substances 0.000 description 10
- 238000011056 performance test Methods 0.000 description 10
- 238000007789 sealing Methods 0.000 description 10
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 10
- 239000000126 substance Substances 0.000 description 9
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 7
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical group C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 7
- 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 description 7
- 239000003921 oil Substances 0.000 description 7
- 239000004408 titanium dioxide Substances 0.000 description 7
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 6
- 150000001412 amines Chemical class 0.000 description 6
- 239000005995 Aluminium silicate Substances 0.000 description 5
- 235000012211 aluminium silicate Nutrition 0.000 description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 5
- 238000002161 passivation Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000011787 zinc oxide Substances 0.000 description 5
- 239000004925 Acrylic resin Substances 0.000 description 4
- 229920000178 Acrylic resin Polymers 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- -1 amido dicyclohexyl methyl hydrides Chemical class 0.000 description 3
- 230000002939 deleterious effect Effects 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 230000037452 priming Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- NDKWCCLKSWNDBG-UHFFFAOYSA-N zinc;dioxido(dioxo)chromium Chemical compound [Zn+2].[O-][Cr]([O-])(=O)=O NDKWCCLKSWNDBG-UHFFFAOYSA-N 0.000 description 3
- OVSKIKFHRZPJSS-UHFFFAOYSA-N 2,4-D Chemical compound OC(=O)COC1=CC=C(Cl)C=C1Cl OVSKIKFHRZPJSS-UHFFFAOYSA-N 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-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
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 150000002505 iron Polymers 0.000 description 2
- 239000001035 lead pigment Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000011527 polyurethane coating Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 1
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 description 1
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical class CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- NSOXQYCFHDMMGV-UHFFFAOYSA-N Tetrakis(2-hydroxypropyl)ethylenediamine Chemical compound CC(O)CN(CC(C)O)CCN(CC(C)O)CC(C)O NSOXQYCFHDMMGV-UHFFFAOYSA-N 0.000 description 1
- 229910000004 White lead Inorganic materials 0.000 description 1
- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 description 1
- CSXZNIRIGKFMEO-UHFFFAOYSA-N [C+4].[F].[O-2].[Fe+2].[O-2].[O-2] Chemical compound [C+4].[F].[O-2].[Fe+2].[O-2].[O-2] CSXZNIRIGKFMEO-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- ZLFVRXUOSPRRKQ-UHFFFAOYSA-N chembl2138372 Chemical compound [O-][N+](=O)C1=CC(C)=CC=C1N=NC1=C(O)C=CC2=CC=CC=C12 ZLFVRXUOSPRRKQ-UHFFFAOYSA-N 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical class ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Substances O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- AXONCVPTTFHNOI-UHFFFAOYSA-N kairine Chemical compound C1=CC(O)=C2N(C)CCCC2=C1 AXONCVPTTFHNOI-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 229940059574 pentaerithrityl Drugs 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- FPSFKBGHBCHTOE-UHFFFAOYSA-M sodium 1-[(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)diazenyl]-4-sulfonaphthalen-2-olate Chemical compound [Na+].O=C1C(N=NC=2C3=CC=CC=C3C(=CC=2O)S([O-])(=O)=O)C(C)=NN1C1=CC=CC=C1 FPSFKBGHBCHTOE-UHFFFAOYSA-M 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 1
- 239000010496 thistle oil Substances 0.000 description 1
- 229960001124 trientine Drugs 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to coating technology, in particular to an environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating and preparation method thereof, which solves theproblem that the prior micaceous iron oxide coating has poor anticorrosion performance, and needs to be matched with pigments containing lead and chromate during manufacturing. The environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating comprises film-forming material, polyaniline modified micaceous iron oxide, and the like. As polyaniline coating layers are formedon the surfaces of the micaceous iron oxide by an oxidative polymerization method, the treated micaceous iron oxide has the effect of passivating metal, and phytic-acid coating layers on the surfacesof the micaceous iron oxide play a role in inhibiting corrosion of metal. The environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating has strong corrosion resistance andpermeation resistance, can be applied to heavy-duty engineering of petrochemical equipment, pipelines, offshore oil platforms, wharf facilities, ships and the like.
Description
Technical field
The present invention relates to coating technology, be specially a kind of environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating and preparation method thereof.
Background technology
Iron mica is the rational rust-stabilising pigment of the good flap of a kind of resistant to chemical media.In rust proof paint, iron mica has certain reflection potential because the overlapping accumulation of sheet has effect well water-fast and impervious to ultraviolet ray.The rust proof paint of being made by iron mica is widely used as the anti-corrosion protection of bridge, electric tower, storage tank, tank car and engineering machinery.
Chinese patent CN86104711 discloses epoxy-chlorinated chloroprene dry and wet two-way paint, be to be main binder with epoxide modified chlorination chloroprene rubber, pimelinketone-N-BUTYL ACETATE is made solvent, and iron mica, red lead powder etc. is made rust-stabilising pigment, and adopts the T31 solidifying agent.It can be used under water, the scene protection and the routine maintenance of steel equipment in alternation of wetting and drying section and the wet environment.Chinese patent CN1164552 discloses a kind of protective system and technology, the protective system of being made up of priming paint and finish paint.Wherein priming paint is made up of chlorinatedpolyethylene, clorafin, DOP, terpolycyantoamino-formaldehyde resin, iron mica, zinc chromate and other pigment.This priming paint and finish paint are applicable to outer anticorrosion and Highrise buildings water tank, food and pharmaceutical equipment anticorrosion in fields such as petrochemical complex gas tank, bridge.Chinese patent CN1164556 discloses a kind of Resins, epoxy two-component surface layer anticorrosive paint that contains pigment such as micaceous iron oxide gray, zinc yellow, iron oxide red.
Existing MIO coating existing problems: because iron mica is the physical property rust-stabilising pigment, iron and steel there is not passivation, Corrosion Protection is undesirable, must cooperate chromate pigmentss such as zinc-chrome yellow or red lead etc. to contain lead pigments, just can reach good especially anticorrosion ability.Be the protection environment, it is imperative to replace deleterious chromic salt or contain lead pigments in coating.
Summary of the invention
The object of the present invention is to provide a kind of eco-friendly polyaniline modified micaceous iron oxide anticorrosive coating and preparation method thereof, it is poor to have solved existing MIO coating antiseptic property, must be used the problem of deleterious leaded and chromate pigments in the manufacturing processed, according to polyaniline the PASSIVATION MECHANISM of iron and steel is replaced deleterious leaded and chromate pigments, reach the target that improves the MIO coating Corrosion Protection.
Technical scheme of the present invention is:
A kind of environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating, described environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating are counted by weight by following component and are constituted:
Filmogen 5～99;
Polyaniline modified micaceous iron oxide 10～45;
Pigment 1～10;
Filler 1～10;
Anti-sagging agent 0.1～4;
Dispersion agent 0.1～2;
Flow agent 0.05～2;
Defoamer 0.05～2;
Solvent 0.5～60;
Described filmogen is Synolac, resol, Resins, epoxy, urethane resin, fluorocarbon resin, supervinyi chloride resin, chlorinated rubber or chlorinatedpolyethylene etc.
Synolac can be selected short oil oleum lini glyptal, short oil oleum lini Synolac, the phenolic resin modified Synolac of short oil oleum lini, medium-oil-length Oleum Cocois Synolac, medium-oil-length ketone oil/oleum lini glyptal, medium-oil-length Thistle oil Synolac or long-oil-length tetramethylolmethane oleum lini Synolac etc. for use.
Resol can be Abietyl modified resol, pure phenolic resin or the pure dissolubility resol that alkylphenol is made.
Described Resins, epoxy is bisphenol A type epoxy resin, bisphenol f type epoxy resin or epoxy ester.Epoxy curing agent is selected amine curing agent for use.Amine curing agent is a fatty amine, as quadrol, diethylenetriamine, triethylene tetramine or tetraethylene pentamine etc.; Or aromatic amine, as mphenylenediamine or m-xylene diamine etc.; Or cycloaliphatic amines, as isophorone diamine, 4,4 '-two amido dicyclohexyl methyl hydrides, two (4-amino-3-methyl cyclohexane alkyl) methane; Or the amine modified firming agent, as amine affixture solidifying agent (fort Ao Lifu chemical industry company limited 590,591,593,810 solidifying agent of Changsha chemical institute) or mannich base (Mannich) addition polyamine curing agent (Changsha chemical institute T31, the NX-2020 of U.S. Ka Delai company, NX-2040 solidifying agent); Or the amides solidifying agent, make the polymeric amide of lacquer factory 200,300,650 or 651 models etc. as the Shanghai kairine.Urethane resin can be selected following commodity for use: Bayer (Bayer) company
AVPLS2180FE,
A365/1,
A VPLS 2009/1FE,
RD181/175X,
A450MPA/X,
A575FE,
VPLS 2971,
670BA,
1652,
A160,
650 or
651; The FX-1560 of Deuchem Co., Ltd., FX-1660, FX-2460A, FX-2820, FX-2970A, FX-2970B, FX-3070, FX-3360, FX-4365, F-45, TN-4366, TN-4543 or PE-8043; The solidifying agent of urethane can be selected from Bayer (Bayer) company
IL,
N75,
N100,
N3200,
N3390,
N3300,
VPLS2010/1,
VPLS 2025,
VPLS 2103 or
Z4470; The Tolonate of France inferior (Rhodia) company in sieve ground
TMHDB-75MX or Tolonate HDT-90; The CORONATE 2604 of Japanese polyurethane Co., Ltd., CORONATE HX-T, CORONATE 2384 or CORONATE HK.
Fluorocarbon resin can be selected following commodity for use: the fluorocarbon resin of Japan AGC Zhu Shi commercial firm commodity Lumiflon by name, as LumiflonLF-100, LumiflonLF-200 or LumiflonLF-400 etc., the ザ Off ロ Application trade mark fluorocarbon resin of Japan East Asia synthetic chemistry company, the good fortune of the new chemical industry of Xi'an Le Jia company limited
Fluorocarbon resin, the FEVE type fluorocarbon resin of Mingzhan fluorin coating stock Co., Ltd., Dalian city; The curing agent component of fluorocarbon resin can be selected from Bayer (Bayer) company
N75,
N100,
N3390,
N3300,
VPLS 2010/1,
VPLS2103 or
Z4470; The Tolonate of France inferior (Rhodia) company in sieve ground
TMHDB-75MX or Tolonate
TMHDT-90; The CORONATE 2604 of Nippon Polyurethane Industry Co., Ltd., CORONATE HX-T, CORONATE 2384 or CORONATE HK.The proportioning of curing agent component and modified synthetic resin component is NCO: OH=0.8-1.5: 1 (mol ratio).
Described pigment is coating pigment commonly used, as titanium dioxide, white lead, zinc oxide, phthalocyanine green, toluidine red or red iron oxide etc.; Filler is a coating filler commonly used, as ground barium sulfate, GL ground limestone, precipitated calcium carbonate, talcum powder or quartz sand etc.
Described solvent is a solvent commonly used in the preparation coating, as toluene, dimethylbenzene, butanols, butanone or pimelinketone etc.
The particle diameter of described iron mica is 200～1000 orders.
The structure of described polyaniline modified micaceous iron oxide is a sheet structure, consists of: surface coating layer is polyaniline and phytic acid, and inside is iron mica; In coating layer, polyaniline and phytic acid uniform distribution, polyaniline accounts for 50～99.98%, and phytic acid accounts for 0.02～50%.Preferable range is: polyaniline accounts for 70～99.8wt%, and phytic acid accounts for 0.2～30wt%.
Described anti-sagging agent is one of wilkinite, polynite, kaolin, aerosil or mixture.
Described dispersion agent, flow agent, defoamer are coating auxiliary agents commonly used.Dispersion agent is as Disperbyk103, Disperbyk106, Disperbyk 107, Disperbyk110, Disperbyk111, Disperbyk115, Disperbyk 163, Disperbyk 164, Disperbyk180, Disperbyk 182, Disperbyk 184, Disperbyk 190, Disperbyk191, Disperbyk192, Disperbyk184, Disperbyk2000, Anti-Terra-P, Anti-Terra-204 or the BYK-P 104S etc. of German Bi Ke chemical company (BYK Chemie); Flow agent is as BYK-353, BYK-354,355, BYK-300, BYK-306, BYK-331, BYK-359, BYK-361, BYK-357, BYK-358 or the BYK-390 etc. of the Perenol F40 of Henkel company, German Bi Ke chemical company; Defoamer is as BYK-052, BYK-053, BYK-055, BYK-057, BYK-065, BYK-065, BYK-066N, BYK-070, BYK-071, BYK-077, BYK-085 or the BYK-088 etc. of the Defom 5300,5400,5500 of the modest chemical company of moral, German Bi Ke chemical company.
The preparation method of described environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating, carry out with step in the following order:
1) preparation method of polyaniline modified micaceous iron oxide
(a) preparation phosphoric acid and phytic acid mixed aqueous solution: wherein phosphoric acid is 0.01～5 mol, is preferably 0.1～3 mol; Phytic acid is 0.01～1 mol, is preferably 0.05～0.5 mol.
(b) aniline is joined in phosphoric acid and the phytic acid mixed aqueous solution, mixed aniline concentration is: 0.01～1 mol.Be preferably 0.06～1 mol.Continue to stir (0.5～2 hour).Get phosphoric acid and phytic acid, aniline mixed aqueous solution 500ml, add 200～1000 order iron micas of 5～1000g, and stir (5～30 minutes), be pre-chilled to 0～10 ℃.
(c) aqueous solution of preparation oxygenant: the concentration of oxygenant is 0.05～5 mol in the solution.Be preferably 0.1～2 mol.The aqueous solution of oxygenant is pre-chilled to 0～10 ℃.Oxygenant can be ammonium persulphate, hydrogen peroxide, Potassium Persulphate, benzoyl peroxide or two or more mixtures.
(d) be slowly to add in 10～30 minutes in the 500ml phosphoric acid that contains iron mica and phytic acid, the aniline mixed aqueous solution (b) (c) 500ml solution in the time, 0～10 ℃ of reaction 1～8 hour, centrifugal, use distilled water wash, 80～100 ℃ of dryings are after 1～5 hour, grind with mortar, and sieve, obtain the iron mica of bottle-green 200～1000 order electrically conductive polyaniline modifications.
2) dispersion agent, flow agent, defoamer, anti-sagging agent, pigment, filler are joined in filmogen and the solvent, (10 minutes～60 minutes) stir, grind in general coating apparatus such as sand mill or three-roller then, fineness is less than discharging after 60 microns;
3) under high-speed stirring, polyaniline modified micaceous iron oxide is added 2) in the filmogen mixture in, be uniformly dispersed (high speed dispersion 20～60 minutes) obtains environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating;
4) environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating is according to the different choice corresponding curing agent of filmogen, and some filmogen does not use the solidifying agent can film forming yet.
Under normal temperature condition, solidify and form the polyaniline modified micaceous iron oxide anticorrosion coat after 7～15 days.
Advantage of the present invention is as follows:
1, adopt the present invention, the environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating of acquisition can be realized the passivation and the inhibition of metal base.
2, adopt the present invention, improved the solidity to corrosion and the permeability resistance of conventional MIO coating.
3, adopt the present invention, can replace the leaded and chromate pigments in the conventional MIO coating, prepared coating meets the environmental requirement that does not contain harmful pigment.
Environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating of the present invention is made up of filmogen, polyaniline modified micaceous iron oxide etc.Utilize oxidative polymerization method to form the coating layer of polyaniline and phytic acid on the iron mica surface, the iron mica after the processing has passivation and corrosion inhibition to metal.Environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating has very strong solidity to corrosion and permeability resistance, can be applicable to the heavy antiseptic project of petrochemical equipment, pipeline, offshore oil platform, terminal facilities, boats and ships etc.The protection in be specially adapted to that waves splash about district and tidal range district.
The performance evaluation of iron mica coating: from the coating sample for preparing, select three, and intersect cut until exposing ground at coatingsurface with special-purpose cut pen.A slice is used for reference in addition.The neutral salt spray test of the coating sample of cut adopts Japan must congratulate the ST-ISO-3 salt-fog test machine of trier Co., Ltd..The NaCl strength of solution is 3.5wt%, and test temperature is 40 ± 2 ℃, sprays continuously 500 hours, and neutral salt spray test operative norm GB1771-79 measures corrosion expansion maximum width in cut place after 500 hours salt-fog tests.
Embodiment
Unless outside specializing among the present invention, related ratio all is weight percentage or weight ratio.
Comparative example 1
0.5 part of dispersion agent (Disperbyk110), 1 part of flow agent (Perenol F40), 1 part of defoamer (Defom5300), 0.5 part of anti-sagging agent (wilkinite), 2 parts of pigment (titanium dioxide), 2 parts of fillers (ground barium sulfate), 25 parts of 325 order iron micas, join in 40 parts of Resins, epoxy (bisphenol A type epoxy resin E-51) and the 20 parts of solvents (toluene), stirred 20 minutes, in sand mill, grind then, fineness is made the component one of epoxy-mica ferric oxide coating less than discharging after 40 microns.590 type solidifying agent are dissolved in the dimethylbenzene, make the 590 model solidifying agent of 60wt%, as component two.
By weight component one: component two=100: 35, two components are mixed, four 150mm * 75mm * No. 45 surface of steel plate of 2mm of handling to the Sa2.5 level at commercial blast spray this coating twice, Air drying 15 days, use weight ratio rosin then: 60 ℃ of liquid of paraffin=1: 1 carry out edge sealing, carry out the coating performance test.The build of paint film is 400 ± 10 μ m.
Comparative example 2
0.5 part of dispersion agent (Disperbyk115), 1 part of flow agent (BYK-300), 1 part of defoamer (BYK-066N), 0.5 part of anti-sagging agent (wilkinite), 2 parts of pigment (titanium dioxide), 2 parts of fillers (ground barium sulfate), 25 parts of 325 order iron micas, join in 85 parts of Synolac (60% oil content oleum lini Synolac) and the 20 parts of solvents (toluene), stirred 20 minutes, in sand mill, grind then, fineness is made the iron mica alkydpaints less than discharging after 40 microns.
Four 150mm * 75mm * No. 45 surface of steel plate of 2mm of handling to the Sa2.5 level at commercial blast spray this coating twice, and Air drying 15 days is used weight ratio rosin then: 60 ℃ of liquid of paraffin=1: 1 carry out edge sealing, carry out the coating performance test.The build of paint film is 400 ± 10 μ m.
Comparative example 3
1 part of dispersion agent (Disperbyk180), 0.8 part of flow agent (BYK-354), 0.5 part of defoamer (Defom5300), 0.6 part of anti-sagging agent (wilkinite), 2 parts of pigment (zinc oxide), 2 parts of fillers (talcum powder), 25 parts of 325 order iron micas, join in 50 part of 2123 model resol (the prosperous gluing Science and Technology Ltd. of Shanghai Road produces) and the 20 parts of solvents (toluene), stirred 20 minutes, in sand mill, grind then, fineness is made the iron mica phenolic coating less than discharging after 40 microns.
Four 150mm * 75mm * No. 45 surface of steel plate of 2mm of handling to the Sa2.5 level at commercial blast spray this coating twice, and Air drying 15 days is used weight ratio rosin then: 60 ℃ of liquid of paraffin=1: 1 carry out edge sealing, carry out the coating performance test.The build of paint film is 400 ± 10 μ m.
Comparative example 4
1 part of dispersion agent (Disperbyk180), 0.8 part of flow agent (BYK-354), 0.5 part of defoamer (Defom5300), 0.6 part of anti-sagging agent (kaolin), 2 parts of pigment (zinc oxide), 2 parts of fillers (talcum powder), 25 parts of 325 order iron micas, join in 50 parts of Lumiflon LF-200 fluorocarbon resins and the 20 parts of solvents (methylethylketone), stirred 20 minutes, in sand mill, grind then, fineness is made the component one of iron mica fluorocarbon coating less than discharging after 40 microns.Solidifying agent
N75 is as component two.Solidifying agent and fluorocarbon resin component are pressed NCO: OH=1: 1 (mol ratio) proportioning, stir four 150mm * 75mm * No. 45 surface of steel plate of 2mm of handling to the Sa2.5 level at commercial blast the back and spray this coating twice, Air drying 15 days, use weight ratio rosin then: 60 ℃ of liquid of paraffin=1: 1 carry out edge sealing, carry out the coating performance test.The build of paint film is 400 ± 10 μ m.
Comparative example 5
1 part of dispersion agent (Disperbyk163), 0.8 part of flow agent (BYK-354), 0.5 part of defoamer (Defom5300), 1 part of anti-sagging agent (kaolin), 5 parts of pigment (titanium dioxide), 2 parts of fillers (talcum powder), 25 parts of 325 order iron micas, join 24 parts of Hydroxylated acrylic resins
(solid content is 60% to A365/1, the hydroxy radical content of solid resin is 2.8%) and 15 parts of solvents (vinyl acetic monomer) in, stirred 20 minutes, in sand mill, grind then, fineness is made the component one of iron mica polyurethane coating less than discharging after 40 microns.Solidifying agent
N75 is as component two.Solidifying agent and Hydroxylated acrylic resin component are pressed NCO: OH=1.1: 1 (mol ratio) proportioning, stir four 150mm * 75mm * No. 45 surface of steel plate of 2mm of handling to the Sa2.5 level at commercial blast the back and spray this coating twice, Air drying 15 days, use weight ratio rosin then: 60 ℃ of liquid of paraffin=1: 1 carry out edge sealing, carry out the coating performance test.The build of paint film is 400 ± 10 μ m.
Embodiment 1
Prepare polyaniline modified micaceous iron oxide by the following method:
(a) preparation phosphoric acid and phytic acid mixed aqueous solution: wherein phosphoric acid is 1.5 mol; Phytic acid is 0.5 mol.
(b) aniline is joined in phosphoric acid and the phytic acid mixed aqueous solution, mixed aniline concentration is: 0.5 mol.Continue to stir 0.5 hour.Get phosphoric acid and phytic acid, aniline mixed aqueous solution 500ml, add the 325 order iron micas of 70g, and after stirring 10 minutes, be pre-chilled to 8 ℃.
(c) aqueous solution of preparation oxygenant: select benzoyl peroxide as oxygenant, the concentration of preparation benzoyl peroxide is 1.5 mol.The aqueous solution of benzoyl peroxide is pre-chilled to 8 ℃.
(d) (c) 500ml solution was slowly added in 10～30 minutes in the 500ml phosphoric acid that contains iron mica and phytic acid, the aniline mixed aqueous solution (b), 5 ℃ of reactions 3 hours, centrifugal, use distilled water wash, 90 ℃ of dryings are after 2 hours, grind with mortar, obtain the iron mica of bottle-green 325 order electrically conductive polyaniline modifications after the screening.The structure of resulting polyaniline modified micaceous iron oxide is a sheet structure, consists of: surface coating layer is polyaniline and phytic acid, and inside is iron mica; In the coating layer of present embodiment, polyaniline and phytic acid uniform distribution, polyaniline accounts for 80wt%, and phytic acid accounts for 20wt%.
0.5 part of dispersion agent (Disperbyk110), 1 part of flow agent (Perenol F40), 1 part of defoamer (Defom5300), 0.5 part of anti-sagging agent (wilkinite), 2 parts of pigment (titanium dioxide), 2 parts of fillers (ground barium sulfate), 25 parts of 325 order polyaniline modified micaceous iron oxides, join in 40 parts of Resins, epoxy (bisphenol A type epoxy resin E-51) and the 20 parts of solvents (toluene), stirred 20 minutes, in sand mill, grind then, fineness is made the component one of polyaniline modified micaceous iron oxide corrosion-resistant epoxy paint less than discharging after 40 microns.590 type solidifying agent are dissolved in the dimethylbenzene, make the 590 model solidifying agent of 60wt%, as component two.By weight component one: component two=100: 35, two components are mixed, four 150mm * 75mm * No. 45 surface of steel plate of 2mm of handling to the Sa2.5 level at commercial blast spray this coating twice, Air drying 15 days, use weight ratio rosin then: 60 ℃ of liquid of paraffin=1: 1 carry out edge sealing, carry out the coating performance test.The build of paint film is 400 ± 10 μ m.
Embodiment 2
0.5 part of dispersion agent (Disperbyk115), 1 part of flow agent (BYK-300), 1 part of defoamer (BYK-066N), 0.5 part of anti-sagging agent (wilkinite), 2 parts of pigment (titanium dioxide), 2 parts of fillers (ground barium sulfate), press 25 parts of the 325 order polyaniline modified micaceous iron oxides of embodiment 1 method preparation, join in 85 parts of Synolac (60% oil content oleum lini Synolac) and the 20 parts of solvents (toluene), stirred 20 minutes, in sand mill, grind then, fineness is made polyaniline modified micaceous iron oxide alkyd protective system less than discharging after 40 microns.Four 150mm * 75mm * No. 45 surface of steel plate of 2mm of handling to the Sa2.5 level at commercial blast spray this coating twice, and Air drying 15 days is used weight ratio rosin then: 60 ℃ of liquid of paraffin=1: 1 carry out edge sealing, carry out the coating performance test.The build of paint film is 400 ± 10 μ m.
Embodiment 3
1 part of dispersion agent (Disperbyk180), 0.8 part of flow agent (BYK-354), 0.5 part of defoamer (Defom5300), 0.6 part of anti-sagging agent (wilkinite), 2 parts of pigment (zinc oxide), 2 parts of fillers (talcum powder), press 25 parts of the 325 order polyaniline modified micaceous iron oxides of embodiment 1 method preparation, join in 50 part of 2123 model resol (the prosperous gluing Science and Technology Ltd. of Shanghai Road produces) and the 20 parts of solvents (toluene), stirred 20 minutes, in sand mill, grind then, fineness is made polyaniline modified micaceous iron oxide phenolic aldehyde protective system less than discharging after 40 microns.Four 150mm * 75mm * No. 45 surface of steel plate of 2mm of handling to the Sa2.5 level at commercial blast spray this coating twice, and Air drying 15 days is used weight ratio rosin then: 60 ℃ of liquid of paraffin=1: 1 carry out edge sealing, carry out the coating performance test.The build of paint film is 400 ± 10 μ m.
Embodiment 4
Prepare polyaniline modified micaceous iron oxide by the following method:
(a) preparation phosphoric acid and phytic acid mixed aqueous solution: wherein phosphoric acid is 0.5 mol; Phytic acid is 0.1 mol.
(b) aniline is joined in phosphoric acid and the phytic acid mixed aqueous solution, mixed aniline concentration is: 0.1 mol.Continue to stir 1.5 hours.Get phosphoric acid and phytic acid, aniline mixed aqueous solution 500ml, add the 325 order iron micas of 20g, and after stirring 25 minutes, be pre-chilled to 2 ℃.
(c) aqueous solution of preparation oxygenant: select ammonium persulphate as oxygenant, the concentration of preparation ammonium persulphate is 0.5 mol.The aqueous solution of ammonium persulphate is pre-chilled to 2 ℃.
(d) (c) 500ml solution was slowly added in 10～30 minutes in the 500ml phosphoric acid that contains iron mica and phytic acid, the aniline mixed aqueous solution (b), 2 ℃ of reactions 1 hour, centrifugal, use distilled water wash, 80 ℃ of dryings are after 5 hours, grind with mortar, obtain the iron mica of bottle-green 325 order electrically conductive polyaniline modifications after the screening.The structure of resulting polyaniline modified micaceous iron oxide is a sheet structure, consists of: surface coating layer is polyaniline and phytic acid, and inside is iron mica; In the coating layer of present embodiment, polyaniline and phytic acid uniform distribution, polyaniline accounts for 90wt%, and phytic acid accounts for 10wt%.
1 part of dispersion agent (Disperbyk180), 0.8 part of flow agent (BYK-354), 0.5 part of defoamer (Defom5300), 0.6 part of anti-sagging agent (kaolin), 2 parts of pigment (zinc oxide), 2 parts of fillers (talcum powder), 25 parts of 325 order iron micas, join in 50 parts of Lumiflon LF-200 fluorocarbon resins and the 20 parts of solvents (methylethylketone), stirred 20 minutes, in sand mill, grind then, fineness is made the component one of polyaniline modified micaceous iron oxide fluorine carbon protective system less than discharging after 40 microns.Solidifying agent
N75 is as component two.Solidifying agent and fluorocarbon resin component are pressed NCO: OH=1: 1 (mol ratio) proportioning, stir four 150mm * 75mm * No. 45 surface of steel plate of 2mm of handling to the Sa2.5 level at commercial blast the back and spray this coating twice, Air drying 15 days, use weight ratio rosin then: 60 ℃ of liquid of paraffin=1: 1 carry out edge sealing, carry out the coating performance test.The build of paint film is 400 ± 10 μ m.
Embodiment 5
1 part of dispersion agent (Disperbyk163), 0.8 part of flow agent (BYK-354), 0.5 part of defoamer (Defom5300), 1 part of anti-sagging agent (kaolin), 5 parts of pigment (titanium dioxide), 2 parts of fillers (talcum powder), press 25 parts of the 325 order polyaniline modified micaceous iron oxides of embodiment 4 methods preparations, join 24 parts of Hydroxylated acrylic resins
(solid content is 60% to A365/1, the hydroxy radical content of solid resin is 2.8%) and 15 parts of solvents (vinyl acetic monomer) in, stirred 20 minutes, in sand mill, grind then, fineness is made the component one of polyaniline modified micaceous iron oxide anti-corrosion polyurethane coating less than discharging after 40 microns.Solidifying agent
N75 is as component two.Solidifying agent and Hydroxylated acrylic resin component are pressed NCO: OH=1.1: 1 (mol ratio) proportioning, stir four 150mm * 75mm * No. 45 surface of steel plate of 2mm of handling to the Sa2.5 level at commercial blast the back and spray this coating twice, Air drying 15 days, use weight ratio rosin then: 60 ℃ of liquid of paraffin=1: 1 carry out edge sealing, carry out the coating performance test.The build of paint film is 400 ± 10 μ m.
The performance evaluation table of table 1 micaceous iron oxide anticorrosive coating
| Cut place corrosion expansion maximum width, mm | |
| Comparative example 1 | ??2.8 |
| Comparative example 2 | ??2.4 |
| Comparative example 3 | ??2.5 |
| Comparative example 4 | ??2.2 |
| Comparative example 5 | ??1.9 |
| Embodiment 1 | ??1.1 |
| Embodiment 2 | ??1.0 |
| Embodiment 3 | ??1.2 |
| Embodiment 4 | ??1.1 |
| Embodiment 5 | ??0.9 |
Illustrate: according to the test-results of table 1, embodiment compares with corresponding comparative example, and corrosion extension width in cut place obviously narrows down, and shows the solidity to corrosion that has significantly been increased common MIO coating by polyaniline-modified iron mica.
Because the solidity to corrosion of environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating obviously is better than conventional micaceous iron oxide anticorrosive coating, it can the really heavy rot-resistant effect of performance under rigorous environment.And overcome the shortcoming that has harmful rust-stabilising pigment in the prior art.The environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating of being invented utilizes polyaniline and phytic acid can make metal base such as iron and steel produce the effect of passivation and inhibition, makes environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating have good solidity to corrosion.Polyaniline-modified iron mica and resin compatible are good, chemically stable.
Claims (5)
1, a kind of environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating is characterized in that, described environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating is counted by weight by following component and constituted:
Filmogen 5～99;
Polyaniline modified micaceous iron oxide 10～45;
Pigment 1～10;
Filler 1～10;
Anti-sagging agent 0.1～4;
Dispersion agent 0.1～2;
Flow agent 0.05～2;
Defoamer 0.05～2;
Solvent 0.5～60.
2, environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating according to claim 1 is characterized in that: described filmogen is Synolac, resol, Resins, epoxy, urethane resin, fluorocarbon resin, supervinyi chloride resin, chlorinated rubber or chlorinatedpolyethylene.
3, environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating according to claim 1 is characterized in that: the particle diameter of described iron mica is 200～1000 orders.
4, environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating according to claim 1, it is characterized in that: the structure of described polyaniline modified micaceous iron oxide is a sheet structure, consist of: surface coating layer is polyaniline and phytic acid, and inside is iron mica; In coating layer, polyaniline and phytic acid uniform distribution, polyaniline accounts for 50～99.98wt%, and phytic acid accounts for 0.02～50wt%.
5, the preparation method of environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating according to claim 1 is characterized in that, carries out with step in the following order:
1) preparation method of polyaniline modified micaceous iron oxide
(a) preparation phosphoric acid and phytic acid mixed aqueous solution: wherein, phosphoric acid is 0.01～5 mol, and phytic acid is 0.01～1 mol;
(b) aniline is joined in phosphoric acid and the phytic acid mixed aqueous solution, mixed aniline concentration is: 0.01～1 mol, continue to stir; Get phosphoric acid and phytic acid, aniline mixed aqueous solution 500ml, add 200～1000 order iron micas of 5～1000g, and after stirring, be pre-chilled to 0～10 ℃;
(c) aqueous solution of preparation oxygenant: the concentration of oxygenant is 0.05～5 mol in the solution, and the aqueous solution of oxygenant is pre-chilled to 0～10 ℃; Oxygenant is ammonium persulphate, hydrogen peroxide, Potassium Persulphate, benzoyl peroxide or two or more mixtures;
(d) be to add in 10～30 minutes in the 500ml phosphoric acid contain iron mica and phytic acid, the aniline mixed aqueous solution (b) (c) 500ml solution in the time, 0～10 ℃ of reaction 1～8 hour, centrifugal, use distilled water wash, 80～100 ℃ of dryings are after 1～5 hour, grind with mortar, and sieve, obtain the iron mica of bottle-green 200～1000 order electrically conductive polyaniline modifications;
2) dispersion agent, flow agent, defoamer, anti-sagging agent, pigment, filler are joined in filmogen and the solvent, stir, grind in general coating apparatus then, fineness is less than discharging after 60 microns;
3) under agitation polyaniline modified micaceous iron oxide is added 2) in the filmogen mixture in, be uniformly dispersed, obtain environmental-friendly polyaniline modified micaceous iron oxide anticorrosive coating.
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