CN116496678B - Fluorinated tannic acid/epoxy resin composite anti-corrosion coating and preparation method thereof - Google Patents
Fluorinated tannic acid/epoxy resin composite anti-corrosion coating and preparation method thereof Download PDFInfo
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- CN116496678B CN116496678B CN202310638688.5A CN202310638688A CN116496678B CN 116496678 B CN116496678 B CN 116496678B CN 202310638688 A CN202310638688 A CN 202310638688A CN 116496678 B CN116496678 B CN 116496678B
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- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical class OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 title claims abstract description 198
- 239000003822 epoxy resin Substances 0.000 title claims abstract description 91
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 91
- 238000000576 coating method Methods 0.000 title claims abstract description 76
- 239000011248 coating agent Substances 0.000 title claims abstract description 74
- 238000005260 corrosion Methods 0.000 title claims abstract description 57
- 239000002131 composite material Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 claims abstract description 103
- 239000001263 FEMA 3042 Substances 0.000 claims abstract description 103
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 claims abstract description 103
- 229940033123 tannic acid Drugs 0.000 claims abstract description 103
- 235000015523 tannic acid Nutrition 0.000 claims abstract description 103
- 229920002258 tannic acid Polymers 0.000 claims abstract description 103
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 45
- DEQJNIVTRAWAMD-UHFFFAOYSA-N 1,1,2,4,4,4-hexafluorobutyl prop-2-enoate Chemical compound FC(F)(F)CC(F)C(F)(F)OC(=O)C=C DEQJNIVTRAWAMD-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000080 wetting agent Substances 0.000 claims abstract description 22
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 11
- 239000013530 defoamer Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 10
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 55
- 239000012045 crude solution Substances 0.000 claims description 45
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 40
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 claims description 40
- 238000003756 stirring Methods 0.000 claims description 34
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 32
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 30
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 24
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 21
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 230000007797 corrosion Effects 0.000 claims description 16
- 239000011259 mixed solution Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000002253 acid Substances 0.000 claims description 12
- 239000012153 distilled water Substances 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 239000003999 initiator Substances 0.000 claims description 8
- 239000002244 precipitate Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 8
- 238000001291 vacuum drying Methods 0.000 claims description 8
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- WUUGFSXJNOTRMR-IOSLPCCCSA-N 5'-S-methyl-5'-thioadenosine Chemical compound O[C@@H]1[C@H](O)[C@@H](CSC)O[C@H]1N1C2=NC=NC(N)=C2N=C1 WUUGFSXJNOTRMR-IOSLPCCCSA-N 0.000 claims description 2
- 125000005395 methacrylic acid group Chemical group 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 239000012299 nitrogen atmosphere Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 5
- 230000000711 cancerogenic effect Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 125000003700 epoxy group Chemical group 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 231100000357 carcinogen Toxicity 0.000 description 2
- 231100000315 carcinogenic Toxicity 0.000 description 2
- 239000003183 carcinogenic agent Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 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 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000002329 infrared spectrum Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- CTKINSOISVBQLD-UHFFFAOYSA-N Glycidol Chemical compound OCC1CO1 CTKINSOISVBQLD-UHFFFAOYSA-N 0.000 description 1
- 244000137852 Petrea volubilis Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000006115 industrial coating Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007777 multifunctional material Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Epoxy Resins (AREA)
- Paints Or Removers (AREA)
Abstract
A fluorinated tannic acid/epoxy resin composite anti-corrosion coating and a preparation method thereof, wherein the raw materials comprise: coarse solution of the fluorinated tannic acid FTA, epoxy resin, a curing agent F0750, an antifoaming agent 902w, a leveling agent BYK333 and a wetting agent 4100, wherein the coarse solution of the fluorinated tannic acid FTA comprises the following components in percentage by mass: epoxy resin: curing agent F0750: defoamer 902w: leveling agent BYK333: wetting agent 4100= (0.6636-5.9724): (24.0000-32.0000): (4.0000-12.0000): (0.4400-0.5200) (0.4400-0.5200) (0.4400-0.5200); the preparation method comprises the following steps: firstly, double-bonding tannic acid to obtain methacrylic tannic acid, then, reacting the methacrylic tannic acid with hexafluorobutyl acrylate to generate fluorinated tannic acid, and finally, dispersing the fluorinated tannic acid into aqueous epoxy resin to obtain the fluorinated tannic acid/epoxy resin composite anti-corrosion coating.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a fluorinated tannic acid/epoxy resin composite anti-corrosion coating and a preparation method thereof.
Background
The application of metal materials involves various industries, such as living, industry, mechanical ships, agriculture, etc., but the metal materials often contact with corrosive media during use to cause different degrees of corrosion, resulting in irreversible economic loss. According to the study, the economic loss caused by corrosion was equivalent to 3% -4% of GDP in one country in the past 50 years, and the global corrosion cost was estimated to be $ 2.5 trillion, accounting for 3.4% of GDP worldwide (2013).
Epoxy resins are a generic term for a class of polymers containing two or more epoxy groups in the molecule. The epoxy groups in the molecular structure can be positioned at any position in the molecular skeleton, are generally distributed at two ends of the chain, and form a ring structure by two carbons and one oxygen. Contains a large amount of active and polar groups, can be crosslinked and cured with different curing agents, can generate ring-opening reaction of epoxy groups and can generate condensation reaction of secondary hydroxyl groups, and can generate different properties together with different additives. The designability and the pluripotency of the structure thereof lead to the wide study of composite multifunctional materials with epoxy resin as a matrix. Meanwhile, the epoxy resin has strong adhesive force, can be coated at normal temperature, has excellent manufacturability, is easy and convenient to operate, and is very suitable for being used as a coating. The most used types in industry are bisphenol based ether epoxy resins in glycidol.
The organic coating is a common measure for controlling and delaying metal corrosion, the traditional solvent type anticorrosive coating contains a large amount of carcinogenic volatile organic compounds, and the water-based anticorrosive coating has become a necessary development trend of the coating industry due to the advantages of environmental protection, no toxicity, easy cleaning and the like. However, compared with solvent-based industrial coatings, the residual hydrophilic groups or surfactants in the aqueous coating product during film formation can cause polar channels to form after the coating is cured, which accelerates moisture absorption and penetration, deteriorates the coating and causes corrosion, and the long-term corrosion resistance is far less than that of solvent coatings.
The patent application with publication number of [ CN113150630.0000B ] and name of 'a modified graphene anti-corrosion coating, a preparation method and application thereof' has the defects that acrylic resin and tannic acid are firstly mixed to prepare paint slurry, and then graphene oxide is prepared, and the acrylic resin is inflammable and vapor and liquid can irritate eyes, skin and respiratory systems, so that the environment and human health are endangered.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the fluorinated tannic acid/epoxy resin composite anti-corrosion coating and the preparation method thereof, wherein methacrylic acid tannic acid is obtained by double-bonding tannic acid, the methacrylic acid tannic acid and hexafluorobutyl acrylate react to generate fluorinated tannic acid, and the fluorinated tannic acid is dispersed into aqueous epoxy resin to obtain the fluorinated tannic acid/epoxy resin composite anti-corrosion coating, so that the fluorinated tannic acid/epoxy resin composite anti-corrosion coating has the characteristics of good anti-corrosion performance, good mechanical property, less carcinogen and environmental friendliness.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a fluorinated tannic acid/epoxy resin composite anti-corrosion coating comprises the following raw materials: coarse solution of the fluorinated tannic acid FTA, epoxy resin, a curing agent F0750, an antifoaming agent 902w, a leveling agent BYK333 and a wetting agent 4100, wherein the coarse solution of the fluorinated tannic acid FTA comprises the following components in percentage by mass: epoxy resin: curing agent F0750: defoamer 902w: leveling agent BYK333: wetting agent 4100= (0.6636-5.9724): (24.0000-32.0000): (4.0000-12.0000): (0.4400-0.5200): (0.4400-0.5200): (0.4400-0.5200).
The crude solution of the fluorinated tannic acid FTA comprises: methacrylic acid tannic acid MTA, hexafluorobutyl acrylate, azobisisobutyronitrile and DMF, according to mass ratio: hexafluorobutyl acrylate: azobisisobutyronitrile: dmf= (0.1500-0.1900): (2.4000-3.2000): (0.0312-0.0320): (13.2720-20.8560).
The methacrylic acid tannic acid MTA comprises the following components: tannic acid TA, triphenylphosphine, tetrahydrofuran and glycidyl methacrylate, wherein the tannic acid TA comprises the following components in percentage by mass: triphenylphosphine: tetrahydrofuran: glycidyl methacrylate= (3.8000-5.4000): (0.4000-0.6000): (35.0000-37.0000): (19.5000-21.5000).
A preparation method of a fluorinated tannic acid/epoxy resin composite anti-corrosion coating comprises the following steps:
step 1: mixing tannic acid TA, triphenylphosphine and tetrahydrofuran according to mass ratio to obtain a mixed solution, slowly dripping glycidyl methacrylate into the mixed solution to obtain a mixture, refluxing and stirring the mixture at 75-95 ℃ for 17-21 hours under anaerobic condition to obtain a crude solution of methacrylic acid tannic acid MTA, sequentially depositing the crude solution of methacrylic acid tannic acid MTA by toluene and distilled water, taking a lower precipitate, and vacuum drying at 45-65 ℃ for 20-36 hours to obtain tan methacrylic acid tannic acid MTA; tannic acid TA: triphenylphosphine: tetrahydrofuran: glycidyl methacrylate= (3.8000-5.4000): (0.4000-0.6000): (35.0000-37.0000): (19.5000-21.5000);
step 2: adding methacrylic acid tannic acid MTA and hexafluorobutyl acrylate into a reaction container, adding an initiator azodiisobutyronitrile, adding DMF, and stirring at 60-80 ℃ for reaction for 4-12 hours under the anaerobic condition to obtain a crude solution of fluorinated tannic acid FTA; methacrylic tannic acid MTA: hexafluorobutyl acrylate: azobisisobutyronitrile: dmf= (0.1500-0.1900): (2.4000-3.2000): (0.0312-0.0320): (13.2720-20.8560);
step 3: slowly adding epoxy resin into the crude solution of the fluorinated tannic acid FTA, stirring for 30-35min at the rotating speed of 650-850r/min, adding a curing agent F0750, stirring for 4-6min at 600-900r/min, uniformly mixing, sequentially adding a defoaming agent 902w, a flatting agent BYK333, a wetting agent 4100, stirring while adding, adding once every 2-6min, and finally filtering with 200-mesh filter cloth to obtain the fluorinated tannic acid/epoxy resin composite anti-corrosion coating; crude solution of fluorotannic acid FTA: epoxy resin: curing agent F0750: defoamer 902w: leveling agent BYK333: wetting agent 4100= (0.6636-5.9724): (24.0000-32.0000): (4.0000-12.0000): (0.4400-0.5200): (0.4400-0.5200): (0.4400-0.5200) to obtain the fluorinated tannic acid/epoxy resin composite corrosion-resistant coating.
The anaerobic conditions in the step 1 and the step 2 are specifically nitrogen atmosphere or nitrogen-filled environment.
Compared with the prior art, the invention has the beneficial effects that:
1. the fluorinated tannic acid/water-based epoxy resin composite anti-corrosion coating prepared by the invention not only solves the problem that a single water-based epoxy resin coating is easy to generate microcracks and holes in the curing process due to the network structure of the fluorinated tannic acid and the hydrophobicity of fluorine element, so that the connection between epoxy molecules is more compact, but also ensures that the fluorinated tannic acid/water-based epoxy resin composite anti-corrosion coating has certain hydrophobicity, thus having excellent mechanical property and anti-corrosion capability.
2. Compared with the traditional solvent-type anticorrosive coating, the fluorinated tannic acid/epoxy resin composite anticorrosive coating prepared by the invention has the advantages that the anticorrosive performance of the epoxy resin is greatly improved due to the small amount of fluorinated tannic acid, and the fluorinated tannic acid/epoxy resin composite anticorrosive coating has wide and easily obtained sources and low price while the anticorrosive performance of the traditional solvent-type coating is kept; the epoxy resin and the cured product are nontoxic, and the epoxy resin and the cured product are basically nontoxic after detection. The solvent-based anticorrosive paint has no three wastes discharge in production, can not cause harm to the environment and human body when in use, meets the environmental protection requirement, and solves the problem that the traditional solvent-based anticorrosive paint contains a large amount of carcinogenic volatile organic compounds, thereby being environment-friendly.
3. According to the invention, aqueous epoxy resin is used as an anti-corrosion matrix, tannic acid TA is subjected to double-strengthening to obtain methacrylic acid tannic acid MTA, then methacrylic acid tannic acid MTA is copolymerized with hexafluorobutyl acrylate to obtain fluorinated tannic acid FTA, and the fluorinated tannic acid FTA is dispersed into the aqueous epoxy resin by using a dispersing machine to obtain the fluorinated tannic acid/aqueous epoxy resin composite anti-corrosion coating.
4. The tannic acid TA has larger molecular weight, the defect of an epoxy resin coating can be overcome by a larger network structure, the corrosion resistance of the epoxy resin coating can be improved, and the mechanical property of the epoxy resin coating can be improved by applying the tannic acid TA to the aqueous epoxy resin coating, but the tannic acid TA has a strong water absorption effect due to a large amount of phenolic hydroxyl groups in the structure, and the property of the coating is influenced by a certain effect, so that the tannic acid TA is firstly subjected to ring-opening polymerization reaction with epoxy groups in glycidyl methacrylate to generate methacrylic acid tannic acid MTA, propenyl in the methacrylic acid tannic acid MTA can react with carbon-carbon double bonds in hexafluorobutyl acrylate to generate fluorinated tannic acid FTA, and the corrosion resistance and mechanical property of the hydrophobic material FTA can be further improved.
In conclusion, the invention obtains the methacrylic acid tannic acid through double-bonding tannic acid, the methacrylic acid tannic acid reacts with hexafluorobutyl acrylate to generate the fluorinated tannic acid, and the fluorinated tannic acid is dispersed into the aqueous epoxy resin to obtain the fluorinated tannic acid/epoxy resin composite anti-corrosion coating, so that the invention has the characteristics of good anti-corrosion performance, good mechanical performance, less carcinogen and environmental friendliness.
Drawings
FIG. 1 is a synthetic route diagram of methacrylic tannic acid MTA.
FIG. 2 is a synthetic route diagram of the fluorotannic acid FTA.
Fig. 3 is a drawing of a tensile test of an epoxy coating and a fluorinated tannic acid/epoxy composite corrosion protection coating.
Fig. 4 is a graph of corrosion resistance test of an epoxy resin coating and a fluorinated tannic acid/epoxy resin composite corrosion protection coating.
FIG. 5 is a FTR diagram and FTR diagram of tannic acid TA and methacrylic acid tannic acid MTA 1 HNMR diagram, wherein diagram (a) is FTR diagram of tannic acid TA and methacrylic acid tannic acid MTA, and diagram (b) is FTR diagram of tannic acid TA and methacrylic acid tannic acid MTA 1 HNMR diagram.
FIG. 6 is a FTR diagram and an FTA diagram of a fluorinated tannic acid 1 HNMR image, wherein image (a) is FTR image of fluorinated tannic acid FTA and image (b) is ftA 1 HNMR diagram.
Detailed Description
Example 1
A fluorinated tannic acid/epoxy resin composite anti-corrosion coating comprises the following raw materials: 0.6636g of crude fluorinated tannic acid FTA solution, 24.0000g of epoxy resin, 4.0000g of curing agent F0750, 0.4400g of defoamer 902w,0.4400g of leveling agent BYK333,0.4400g of wetting agent 4100; a crude solution of the fluorotannic acid FTA was prepared from 0.1500g of tannic acid methacrylic acid MTA, 2.4000g of hexafluorobutyl acrylate, 0.0312g of azobisisobutyronitrile and 13.2720g of DMF; tannic acid methacrylate MTA was prepared from 3.8000g tannic acid TA, 0.4000g triphenylphosphine, 35.0000g tetrahydrofuran mix and 19.5000g glycidyl methacrylate.
A preparation method of a fluorinated tannic acid/epoxy resin composite anti-corrosion coating comprises the following steps:
referring to fig. 1, step 1: 3.8000g of tannic acid TA, 0.4000g of triphenylphosphine and 35.0000g of tetrahydrofuran are mixed to obtain a mixed solution, 19.5000g of glycidyl methacrylate is slowly dripped into the mixed solution to obtain a mixture, the mixture is refluxed and stirred for 17 hours at 75 ℃ under nitrogen atmosphere to obtain a crude solution of methacrylic acid tannic acid MTA, the crude solution of methacrylic acid tannic acid MTA is sequentially deposited by toluene and distilled water, the lower precipitate is taken out, and vacuum drying is carried out for 20 hours at the temperature of 45 ℃ to obtain tan methacrylic acid tannic acid MTA with brown yellow color;
step 2: adding 0.1500g of methacrylic acid tannic acid MTA and 2.4000g of hexafluorobutyl acrylate into a reaction vessel, adding 0.0312g of initiator azodiisobutyronitrile, adding 13.2720g of DMF, introducing nitrogen, and stirring at 60 ℃ for reaction for 4 hours to obtain a crude solution of fluorinated tannic acid FTA;
referring to fig. 2, step 3: 24.0000g of epoxy resin is slowly added into 0.6636g of crude solution of fluorinated tannic acid FTA, stirring is carried out for 30min, 4.0000g of curing agent F0750 is added, stirring is carried out for 2min, mixing is carried out uniformly, 0.4400g of defoamer 902w,0.4400g of flatting agent BYK333 and 0.4400g of wetting agent 4100 are sequentially added, the interval is 2min, and finally 200-mesh filter cloth is used for filtering, so that the fluorinated tannic acid/epoxy resin composite anti-corrosion coating is obtained.
Example 2
A fluorinated tannic acid/epoxy resin composite anti-corrosion coating comprises the following raw materials: 1.9908g of crude fluorinated tannic acid FTA solution, 26.0000g of epoxy resin, 6.0000g of curing agent F0750, 0.4600g of defoaming agent 902w,0.4600g of leveling agent BYK333,0.4600g of wetting agent 4100; a crude solution of the fluorotannic acid FTA was prepared from 0.1600g of tannic acid methacrylic acid MTA, 2.6000g of hexafluorobutyl acrylate, 0.0314g of azobisisobutyronitrile and 15.1680g of DMF; the methacrylic tannic acid MTA was prepared from 4.4000g tannic acid TA, 0.4400g triphenylphosphine, 35.5000g tetrahydrofuran and 20.0000g glycidyl methacrylate.
A preparation method of a fluorinated tannic acid/epoxy resin composite anti-corrosion coating comprises the following steps:
referring to fig. 1, step 1: mixing 4.4000g of tannic acid TA, 0.4400g of triphenylphosphine and 35.5000g of tetrahydrofuran to obtain a mixed solution, slowly dripping 20.000g of glycidyl methacrylate into the mixed solution to obtain a mixture, refluxing and stirring the mixture at 80 ℃ for 18 hours under nitrogen atmosphere to obtain a crude solution of methacrylic acid tannic acid MTA, sequentially depositing the crude solution of methacrylic acid tannic acid MTA by toluene and distilled water, taking a lower precipitate at 50 ℃, and vacuum drying for 24 hours to obtain tan methacrylic acid tannic acid MTA;
step 2: 0.1600g of methacrylic acid tannic acid MTA and 2.6000g of hexafluorobutyl acrylate are added into a reaction vessel, then 0.0314g of initiator azodiisobutyronitrile is added, 15.1680g of DMF is added, nitrogen is introduced, and stirring reaction is carried out for 6 hours at 65 ℃ to obtain a crude solution of fluorinated tannic acid FTA;
referring to fig. 2, step 3: 26.0000g of epoxy resin is slowly added into 1.9908g of crude solution of fluorinated tannic acid FTA, stirring is carried out for 31min, 6.0000g of curing agent F0750 is added, stirring is carried out for 3min, mixing is carried out uniformly, 0.4600g of defoamer 902w,0.4600g of flatting agent BYK333 and 0.4600g of wetting agent 4100 are sequentially added, the interval is 3min, and finally 200-mesh filter cloth is used for filtering, so that the fluorinated tannic acid/epoxy resin composite anti-corrosion coating is obtained.
Example 3
A fluorinated tannic acid/epoxy resin composite anti-corrosion coating comprises the following raw materials: 3.3180g of crude fluorinated tannic acid FTA solution, 28.0000g of epoxy resin, 8.0000g of curing agent F0750, 0.4800g of defoaming agent 902w,0.4800g of leveling agent BYK333,0.4800g of wetting agent 4100; a crude solution of the fluorotannic acid FTA was prepared from 0.1700g of tannic acid methacrylic acid MTA, 2.8000g of hexafluorobutyl acrylate, 0.0316g of azobisisobutyronitrile and 17.0640g of DMF; tannic acid methacrylate MTA was prepared from 4.6000g tannic acid TA, 0.4800g triphenylphosphine, 36.0000g tetrahydrofuran and 20.5000g glycidyl methacrylate.
A preparation method of a fluorinated tannic acid/epoxy resin composite anti-corrosion coating comprises the following steps:
referring to fig. 1, step 1: mixing 4.6000g of tannic acid TA, 0.4800g of triphenylphosphine and 36.0000g of tetrahydrofuran to obtain a mixed solution, slowly dripping 20.5000g of glycidyl methacrylate into the mixed solution to obtain a mixture, refluxing and stirring the mixture at 85 ℃ for 19 hours under nitrogen atmosphere to obtain a crude solution of methacrylic acid tannic acid MTA, sequentially depositing the crude solution of methacrylic acid tannic acid MTA by toluene and distilled water, taking a lower precipitate at 55 ℃, and vacuum drying for 28 hours to obtain tan methacrylic acid tannic acid MTA;
step 2: 0.1700g of methacrylic acid tannic acid and 2.8000g of hexafluorobutyl acrylate are added into a reaction vessel, then 0.0316g of initiator azodiisobutyronitrile is added, 17.0640g of DMF is added, nitrogen is introduced, and stirring reaction is carried out for 8 hours at 70 ℃ to obtain a crude solution of fluorinated tannic acid FTA;
referring to fig. 2, step 3: 28.0000g of epoxy resin is slowly added into 3.3180g of crude solution of fluorinated tannic acid FTA, stirring is carried out for 32min, 8.0000g of curing agent F0750 is added, stirring is carried out for 4min, mixing is carried out uniformly, 0.4800g of defoamer 902w,0.4800g of flatting agent BYK333 and 0.4800g of wetting agent 4100 are sequentially added, the interval is 4min, and finally 200-mesh filter cloth is used for filtering, so that the fluorinated tannic acid/epoxy resin composite anti-corrosion coating is obtained.
Example 4
A fluorinated tannic acid/epoxy resin composite anti-corrosion coating comprises the following raw materials: 4.6452g of crude solution of fluorinated tannic acid FTA, 30.0000g of epoxy resin, 10.0000g of curing agent F0750, 0.5000g of defoaming agent 902w,0.5000g of leveling agent BYK333 and 0.5000g of wetting agent 4100; a crude solution of the fluorotannic acid FTA was prepared from 0.1800g of tannic acid methacrylic acid MTA, 3.0000g of hexafluorobutyl acrylate, 0.0318g of azobisisobutyronitrile and 18.9600g of DMF; tannic acid methacrylate MTA was prepared from 5.0000g tannic acid TA, 0.5200g triphenylphosphine, 36.5000g tetrahydrofuran and 21.0000g glycidyl methacrylate.
A preparation method of a fluorinated tannic acid/epoxy resin composite anti-corrosion coating comprises the following steps:
referring to fig. 1, step 1: mixing 5.0000g of tannic acid TA, 0.5200g of triphenylphosphine and 36.5000g of tetrahydrofuran to obtain a mixed solution, slowly dripping 21.0000g of glycidyl methacrylate into the mixed solution to obtain a mixture, refluxing and stirring the mixture at 90 ℃ for 20 hours under nitrogen atmosphere to obtain a crude solution of methacrylic acid tannic acid MTA, sequentially depositing the crude solution of methacrylic acid tannic acid MTA by toluene and distilled water, taking a lower precipitate at 60 ℃, and vacuum drying for 24 hours to obtain tan methacrylic acid tannic acid MTA;
step 2: adding 0.1800g of methacrylic acid tannic acid MTA and 3.0000g of hexafluorobutyl acrylate into a reaction vessel, adding 0.0318g of initiator azodiisobutyronitrile, adding 18.9600g of DMF, introducing nitrogen, and stirring at 75 ℃ for reaction for 10 hours to obtain a crude solution of fluorinated tannic acid FTA;
referring to fig. 2, step 3: 30.0000g of epoxy resin is slowly added into 4.6452g of crude solution of fluorinated tannic acid FTA, stirring is carried out for 33min, 10.0000g of curing agent F0750 is added, stirring is carried out for 5min, mixing is carried out uniformly, 0.5000g of defoaming agent 902w,0.5000g of flatting agent BYK333 and 0.5000g of wetting agent 4100 are sequentially added, an interval is 5min, and finally 200-mesh filter cloth is used for filtering, so that the fluorinated tannic acid/epoxy resin composite anti-corrosion coating is obtained.
Example 5
A fluorinated tannic acid/epoxy resin composite anti-corrosion coating comprises the following raw materials: 5.9724g of crude fluorinated tannic acid FTA solution, 32.0000g of epoxy resin, 12.0000g of curing agent F0750, 0.5200g of defoaming agent 902w,0.5200g of leveling agent BYK333,0.5200g of wetting agent 4100; a crude solution of the fluorotannic acid FTA was prepared from 0.1900g of tannic acid methacrylic acid MTA, 3.2000g of hexafluorobutyl acrylate, 0.0320g of azobisisobutyronitrile and 20.8560g of DMF; the methacrylic tannic acid MTA was prepared from 5.4000g tannic acid TA, 0.5600g triphenylphosphine, 37.0000g tetrahydrofuran mix and 21.5000g glycidyl methacrylate.
A preparation method of a fluorinated tannic acid/epoxy resin composite anti-corrosion coating comprises the following steps:
referring to fig. 1, step 1: mixing 5.4000g of tannic acid TA, 0.5600g of triphenylphosphine and 37.0000g of tetrahydrofuran to obtain a mixed solution, slowly dripping 21.5000g of glycidyl methacrylate into the mixed solution to obtain a mixture, refluxing and stirring the mixture at 95 ℃ for 21 hours under nitrogen atmosphere to obtain a crude solution of methacrylic acid tannic acid MTA, sequentially depositing the crude solution of methacrylic acid tannic acid MTA by toluene and distilled water, taking a lower precipitate at 65 ℃, and vacuum drying for 36 hours to obtain tan methacrylic acid tannic acid MTA with brown color;
step 2: 0.1900g of methacrylic acid tannic acid MTA and 3.2000g of hexafluorobutyl acrylate are added into a reaction vessel, then 0.0320g of initiator azodiisobutyronitrile is added, 20.8560g of DMF is added, nitrogen is introduced, and stirring reaction is carried out for 12 hours at 80 ℃ to obtain a crude solution of fluorinated tannic acid FTA;
referring to fig. 2, step 3: 32.0000g of epoxy resin is slowly added into 5.9724g of crude solution of fluorinated tannic acid FTA, stirring is carried out for 35min, 12.0000g of curing agent F0750 is added, stirring is carried out for 6min, mixing is carried out uniformly, 0.5200g of defoamer 902w,0.5200g of flatting agent BYK333 and 0.5200g of wetting agent 4100 are sequentially added, the interval is 6min, and finally 200-mesh filter cloth is used for filtering, so that the fluorinated tannic acid/epoxy resin composite anti-corrosion coating is obtained.
Referring to fig. 3, a proper amount of the fluorinated tannic acid/epoxy resin composite anti-corrosion coating paint is taken to form a film on a polytetrafluoroethylene board, and is stretched after being dried, so that a stress-strain diagram of the epoxy resin coating WEP and the fluorinated tannic acid/epoxy resin composite anti-corrosion coating prepared in the embodiments 1-5 can be seen, the stress of the coating is gradually reduced, the deformation is increased first and then reduced, and the fact that the composite coating added with the fluorinated tannic acid FTA has better strain capacity is shown.
Referring to fig. 4, after polishing a Q235 steel plate with an area of 60mm× 130.0000mm and a thickness of 0.5000mm with 400mm sand paper, drying naturally at room temperature after wiping with ethanol to obtain a pretreated Q235 steel plate, scraping the prepared fluorinated tannic acid/epoxy resin composite anticorrosive coating on the pretreated Q235 steel plate with a 150 μm magnetic rod, standing for 20-30h at room temperature, drying at 55-65 ℃ for 20-24h, cutting, sealing with wax, and performing electrochemical impedance test, so that the electrochemical impedance test chart of the epoxy resin coating WEP and the anticorrosive coating of the fluorinated tannic acid/epoxy resin composite anticorrosive coating prepared in examples 1-5 can be seen, and it can be seen that the electrochemical impedance modulus of the coating added with the fluorinated tannic acid FTA is higher than that of the epoxy resin coating WEP, and the impedance modulus of the fluorinated tannic acid/epoxy resin composite anticorrosive coating is the largest, which indicates that the prepared fluorinated tannic acid/epoxy resin composite anticorrosive coating has excellent anticorrosive performance.
Referring to FIG. 5, FIG. (a) is an infrared spectrum of tannic acid TA and methacrylic acid tannic acid MTA, showing a C-H absorption peak different from tannic acid TA at 2930; FIG. (b) is a nuclear magnetic pattern of tannic acid TA and methacrylic acid tannic acid MTA, and a chemical shift at 7.3ppm is a double bond peak of vinyl group, which indicates that the methacrylic acid tannic acid MTA synthesis was successful.
Referring to fig. 6, fig. 6 (a) shows an infrared spectrum of FTA of fluorotannic acid, a C-F absorption peak appears at 1083, a C-O absorption peak appears at 1195, a c=o absorption peak appears at 1700, and fig. (b) shows a nuclear magnetic spectrum of FTA of fluorotannic acid, a large inclusion peak appears at 7.3ppm, a double bond peak disappears, and the conversion rate is higher, indicating that FTA synthesis of fluorotannic acid is successful.
Claims (5)
1. The fluorinated tannic acid/epoxy resin composite anti-corrosion coating is characterized by comprising the following raw materials: coarse solution of the fluorinated tannic acid FTA, epoxy resin, a curing agent F0750, an antifoaming agent 902w, a leveling agent BYK333 and a wetting agent 4100, wherein the coarse solution of the fluorinated tannic acid FTA comprises the following components in percentage by mass: epoxy resin: curing agent F0750: defoamer 902w: leveling agent BYK333: wetting agent 4100= (0.6636-5.9724): (24.0000-32.0000): (4.0000-12.0000): (0.4400-0.5200) (0.4400-0.5200) (0.4400-0.5200);
the crude solution of the fluorinated tannic acid FTA comprises: methacrylic acid tannic acid MTA, hexafluorobutyl acrylate, azobisisobutyronitrile and DMF, according to mass ratio: hexafluorobutyl acrylate: azobisisobutyronitrile: dmf= (0.1500-0.1900): (2.4000-3.2000): (0.0312-0.0320): (13.2720-20.8560);
the methacrylic acid tannic acid MTA comprises the following components: tannic acid TA, triphenylphosphine, tetrahydrofuran and glycidyl methacrylate, wherein the tannic acid TA comprises the following components in percentage by mass: triphenylphosphine: tetrahydrofuran: glycidyl methacrylate= (3.8000-5.4000): (0.4000-0.6000): (35.0000-37.0000): (19.5000-21.5000);
the preparation method of the fluorinated tannic acid/epoxy resin composite anti-corrosion coating comprises the following steps:
step 1: mixing tannic acid TA, triphenylphosphine and tetrahydrofuran according to mass ratio to obtain a mixed solution, slowly dripping glycidyl methacrylate into the mixed solution to obtain a mixture, refluxing and stirring the mixture at 75-95 ℃ under anaerobic condition for 17-21h to obtain a crude solution of methacrylic acid tannic acid MTA, sequentially depositing the crude solution of methacrylic acid tannic acid MTA by toluene and distilled water, taking a lower precipitate, and vacuum drying at 45-65 ℃ for 20-36h to obtain brown yellow methacrylic acid tannic acid MTA;
step 2: adding methacrylic acid tannic acid MTA and hexafluorobutyl acrylate into a reaction container, adding an initiator azodiisobutyronitrile, adding DMF, and stirring at 60-80 ℃ for reaction under the anaerobic condition for 4-12h to obtain a crude solution of fluorinated tannic acid FTA;
step 3: slowly adding epoxy resin into the crude solution of the fluorinated tannic acid FTA, stirring for 30-35min at the rotating speed of 650-850r/min, adding a curing agent F0750 and stirring for 4-6min at 600-900-r/min, uniformly mixing, sequentially adding a defoaming agent 902w, a leveling agent BYK333, a wetting agent 4100 and stirring at the same time, adding once every 2-6min, and finally filtering with a 200-mesh filter cloth to obtain the fluorinated tannic acid/epoxy resin composite anti-corrosion coating.
2. The fluorinated tannic acid/epoxy resin composite corrosion-resistant coating of claim 1, wherein the raw materials comprise: 0.6636g crude solution of fluorinated tannic acid FTA, 24.0000g epoxy resin, 4.0000g curing agent F0750, 0.4400g defoamer 902w,0.4400g leveling agent BYK333,0.4400g wetting agent 4100; a crude solution of fluorotannic acid FTA was prepared from 0.1500g tannic acid MTA methacrylate, 2.4000g hexafluorobutyl acrylate, 0.0312g azobisisobutyronitrile and 13.2720g DMF; tannic acid methacrylate MTA was prepared from 3.8000g tannic acid TA, 0.4000g triphenylphosphine, 35.0000g tetrahydrofuran mix and 19.5000g glycidyl methacrylate.
3. The fluorinated tannic acid/epoxy resin composite corrosion-resistant coating of claim 1, wherein the raw materials comprise: 3.3180g crude solution of fluorinated tannic acid FTA, 28.0000g epoxy resin, 8.0000g curing agent F0750, 0.4800g defoamer 902w,0.4800g leveling agent BYK333,0.4800g wetting agent 4100; a crude solution of fluorotannic acid FTA was prepared from 0.1700g tannic acid MTA methacrylate, 2.8000g hexafluorobutyl acrylate, 0.0316g azobisisobutyronitrile and 17.0640g DMF; tannic acid methacrylate MTA was prepared from 4.6000g tannic acid TA, 0.4800g triphenylphosphine, 36.0000g tetrahydrofuran and 20.5000g glycidyl methacrylate.
4. A method for preparing a fluorinated tannic acid/epoxy resin composite corrosion-resistant coating according to any one of claims 1 to 3, comprising the steps of:
step 1: mixing tannic acid TA, triphenylphosphine and tetrahydrofuran according to mass ratio to obtain a mixed solution, slowly dripping glycidyl methacrylate into the mixed solution to obtain a mixture, refluxing and stirring the mixture at 75-95 ℃ under anaerobic condition for 17-21h to obtain a crude solution of methacrylic acid tannic acid MTA, sequentially depositing the crude solution of methacrylic acid tannic acid MTA by toluene and distilled water, taking a lower precipitate, and vacuum drying at 45-65 ℃ for 20-36h to obtain brown yellow methacrylic acid tannic acid MTA;
step 2: adding methacrylic acid tannic acid MTA and hexafluorobutyl acrylate into a reaction container, adding an initiator azodiisobutyronitrile, adding DMF, and stirring at 60-80 ℃ for reaction under the anaerobic condition for 4-12h to obtain a crude solution of fluorinated tannic acid FTA;
step 3: slowly adding epoxy resin into the crude solution of the fluorinated tannic acid FTA, stirring for 30-35min at the rotating speed of 650-850r/min, adding a curing agent F0750 and stirring for 4-6min at 600-900-r/min, uniformly mixing, sequentially adding a defoaming agent 902w, a leveling agent BYK333, a wetting agent 4100 and stirring at the same time, adding once every 2-6min, and finally filtering with a 200-mesh filter cloth to obtain the fluorinated tannic acid/epoxy resin composite anti-corrosion coating.
5. The method for preparing a fluorinated tannic acid/epoxy resin composite corrosion-resistant coating according to claim 4, wherein the anaerobic conditions in step 1 and step 2 are specifically nitrogen-introduced environments.
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| CN111440503A (en) * | 2020-04-24 | 2020-07-24 | 郑明光 | Hydrophobic fluorinated epoxy acrylic resin anticorrosive coating and preparation method thereof |
| CN113150630A (en) * | 2021-02-03 | 2021-07-23 | 内蒙古工业大学 | Modified graphene anticorrosive paint and preparation method and application thereof |
| CN115216170A (en) * | 2022-08-16 | 2022-10-21 | 宏元(江门)化工科技有限公司 | Water-based epoxy resin anticorrosive paint and preparation method thereof |
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| CN111440503A (en) * | 2020-04-24 | 2020-07-24 | 郑明光 | Hydrophobic fluorinated epoxy acrylic resin anticorrosive coating and preparation method thereof |
| CN113150630A (en) * | 2021-02-03 | 2021-07-23 | 内蒙古工业大学 | Modified graphene anticorrosive paint and preparation method and application thereof |
| CN115216170A (en) * | 2022-08-16 | 2022-10-21 | 宏元(江门)化工科技有限公司 | Water-based epoxy resin anticorrosive paint and preparation method thereof |
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