CN116285577A - Environment-friendly steel structure anticorrosive paint and preparation method thereof - Google Patents
Environment-friendly steel structure anticorrosive paint and preparation method thereof Download PDFInfo
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- CN116285577A CN116285577A CN202310269332.9A CN202310269332A CN116285577A CN 116285577 A CN116285577 A CN 116285577A CN 202310269332 A CN202310269332 A CN 202310269332A CN 116285577 A CN116285577 A CN 116285577A
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- steel structure
- anticorrosive paint
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- titanium dioxide
- vermiculite
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- 239000003973 paint Substances 0.000 title claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 52
- 239000010959 steel Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 93
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 77
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 73
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 47
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 43
- 239000010455 vermiculite Substances 0.000 claims abstract description 43
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 43
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 43
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 41
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 35
- 239000003822 epoxy resin Substances 0.000 claims abstract description 34
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 34
- 239000011787 zinc oxide Substances 0.000 claims abstract description 34
- 239000007822 coupling agent Substances 0.000 claims abstract description 25
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- -1 titanium dioxide compound Chemical class 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 16
- 230000007613 environmental effect Effects 0.000 claims abstract 4
- 238000000576 coating method Methods 0.000 claims description 40
- 239000000203 mixture Substances 0.000 claims description 37
- 239000011248 coating agent Substances 0.000 claims description 32
- 238000003756 stirring Methods 0.000 claims description 32
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 30
- 239000002243 precursor Substances 0.000 claims description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000008367 deionised water Substances 0.000 claims description 18
- 229910021641 deionized water Inorganic materials 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 14
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 14
- 239000011701 zinc Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 8
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 8
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 8
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 229960000583 acetic acid Drugs 0.000 claims description 4
- 239000012362 glacial acetic acid Substances 0.000 claims description 4
- 238000005554 pickling Methods 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 abstract description 14
- 239000011256 inorganic filler Substances 0.000 abstract description 10
- 229910003475 inorganic filler Inorganic materials 0.000 abstract description 10
- 238000004321 preservation Methods 0.000 abstract description 4
- 239000003431 cross linking reagent Substances 0.000 abstract description 2
- 239000006087 Silane Coupling Agent Substances 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 16
- 230000007797 corrosion Effects 0.000 description 15
- 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 10
- 238000012360 testing method Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 230000007774 longterm Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002195 synergetic effect Effects 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides an environment-friendly steel structure anticorrosive paint which comprises the following preparation raw materials in parts by weight: 90-110 parts of epoxy resin, 15-20 parts of vermiculite supported zinc oxide, 10-20 parts of graphene/silicon dioxide/titanium dioxide compound, 12-16 parts of aminosilane coupling agent and 5-10 parts of curing agent; the steel structure anticorrosive paint provided by the invention takes epoxy resin as a matrix, and vermiculite loaded zinc oxide and graphene/silicon dioxide/titanium dioxide composite as inorganic filler; the steel structure anticorrosive paint with environmental friendliness, heat preservation and weather resistance is prepared by taking the silane coupling agent as the cross-linking agent of the inorganic filler and the matrix.
Description
Technical Field
The invention belongs to the technical field of anti-corrosion coating, and particularly relates to an environment-friendly steel structure anti-corrosion coating.
Background
The steel structure is used as an energy-saving and environment-friendly material, is widely used in engineering construction due to the characteristics of light weight, good ductility and the like, however, due to the self-properties of a metal matrix, the heat resistance, the fire resistance, the corrosion resistance and the like of the steel structure often cannot meet the requirements under the complex working condition, and once the steel structure is corroded, the mechanical properties of strength, plasticity, toughness and the like of the steel structure are obviously reduced to influence the use effect, and the annual steel equipment scrapped due to corrosion is about 30% of annual output, so that the economic loss is as high as trillion dollars. At present, most of the methods for coating the surfaces of the steel structures with heat-resistant, fire-resistant and corrosion-resistant coatings are adopted to protect the steel structures, so that the applicability of the steel structures is improved, and the loss caused by corrosion is avoided.
The most effective method for corrosion protection of the steel structure at present is to coat an anti-corrosion coating on the surface of metal to isolate the metal from corrosive media, but the coating has single function and poor weather resistance of a coating material, so that the long-term use requirement of the steel structure material cannot be met, and the steel structure material belongs to solvent type coating, and the VOC emission is high and pollutes the environment. Therefore, research and development of multifunctional environment-friendly steel structure anticorrosive paint with long-term anticorrosive performance and good anticorrosive performance are urgently needed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the steel structure anticorrosive paint which is environment-friendly, has heat preservation performance and good in anticorrosive coating durability, and solves the problems of poor anticorrosive performance, poor coating durability and high VOC release of the existing steel structure anticorrosive paint.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the environment-friendly steel structure anticorrosive paint comprises the following raw materials: epoxy resin, vermiculite loaded zinc oxide, an aminosilane coupling agent, a graphene oxide/titanium dioxide compound and a curing agent.
Further, the steel structure anticorrosive paint comprises the following preparation raw materials in parts by weight: 90-110 parts of epoxy resin, 15-20 parts of vermiculite supported zinc oxide, 10-20 parts of graphene/silicon dioxide/titanium dioxide compound, 12-16 parts of aminosilane coupling agent and 5-10 parts of curing agent.
Preferably, the epoxy resin is bisphenol a type epoxy resin.
Further, the vermiculite loaded zinc oxide is prepared by the following method: dispersing the vermiculite after pickling in Zn 2+ In the reducing sugar solution of (2), carrying out ultrasonic treatment to obtain a dispersion liquid, and placing the dispersion liquid in a tube furnace for roasting to obtain the vermiculite-loaded zinc oxide.
Preferably, the Zn 2+ Zn in reducing sugar solution of (2) 2+ The molar concentration of (2) is 0.02mol/L; the weight ratio of the addition amount of the vermiculite to the dispersion liquid is 1:2.
Further, the graphene/silicon dioxide/titanium dioxide composite is prepared by the following method:
preparation of a silica precursor: dispersing tetraethyl silicate in an ethanol solution, and uniformly stirring to obtain a silicon dioxide precursor solution;
preparation of a titanium dioxide precursor: dissolving tetrabutyl titanate and glacial acetic acid in deionized water, and uniformly stirring to obtain a titanium dioxide precursor;
adding a titanium dioxide precursor solution into a silicon dioxide precursor solution under the stirring condition, adding citric acid into the system, stirring and reacting for 10-12 hours at 200-220 ℃ under the light-shielding condition, adding ethanol, and centrifugally separating to obtain the graphene/silicon dioxide/titanium dioxide composite.
Preferably, the weight ratio of the tetraethyl silicate, the tetrabutyl titanate and the citric acid is 1:1:1.5.
Preferably, the aminosilane coupling agent is KH550.
Preferably, the curing agent is a mixture of diethylenetriamine and thiourea.
Further, the preparation method of the steel structure anticorrosive paint specifically comprises the following steps:
dispersing vermiculite loaded zinc oxide in deionized water, adding graphene/silicon dioxide/titanium dioxide compound into the deionized water, dispersing uniformly, gradually adding an aminosilane coupling agent into the mixture, stirring the mixture at 40-50 ℃ for reaction for 1-2 hours, adding epoxy resin into the mixture, and stirring the mixture for reaction to obtain a coating component A;
and uniformly mixing the curing agent with the component A, and curing to obtain the steel structure anticorrosive paint.
Advantageous effects
According to the invention, epoxy resin is used as a matrix, vermiculite loaded zinc oxide, graphene/silicon dioxide/titanium dioxide composite is used as inorganic filler, and an aminosilane coupling agent is used as a cross-linking agent between the matrix and the filler, so that the bonding strength of the inorganic filler and the matrix is enhanced; the vermiculite loaded zinc oxide and the graphene/silicon dioxide/titanium dioxide compound are used as inorganic fillers, so that the water resistance, compactness and corrosion resistance of the coating are improved, and the mechanical strength of the coating is improved; the environment-friendly steel structure anticorrosive paint with good wear resistance, good compactness, good anticorrosive performance and long weather resistance is prepared.
According to the invention, vermiculite loaded zinc oxide is used as an inorganic filler, so that the dispersibility of pure zinc oxide powder in a matrix is effectively improved, the expansion of vermiculite and the formation of zinc oxide are simultaneously carried out in the preparation process of the vermiculite loaded zinc oxide material, and the loading is uniform, so that the zinc oxide is beneficial to playing a role in the paint. The expanded vermiculite has a lamellar structure, so that on one hand, inorganic filler is prevented from sedimentation in an organic matrix; on the other hand, the corrosion caused by the passage of micromolecular substances in a channel formed by the epoxy resin matrix can be effectively prevented; meanwhile, the coating is endowed with certain heat preservation performance; in addition, the zinc oxide also makes the coating have the functions of shielding ultraviolet rays and sterilizing.
According to the invention, the graphene/silicon dioxide/titanium dioxide compound is used as the inorganic filler, so that the agglomeration of pure graphene, silicon dioxide and titanium dioxide in a coating matrix is effectively avoided, the dispersibility of the inorganic filler in an organic matrix is improved, and the interaction among raw materials in the coating matrix is improved; the three components cooperate to fill the defect unit of the coating, thereby effectively reducing the porosity of the coating and enhancing the compactness of the coating; the anti-corrosion performance of the paint is improved: and the filler titanium dioxide is excited by light to generate free moving electrons, and the graphene has higher electron mobility, so that electrons can be enriched on the surface of the metal, and the corrosion potential of the metal is reduced; meanwhile, the hydrophobicity of the paint is improved, so that the influence of moisture in the external environment on the paint is reduced, and the service life of the paint is prolonged.
The steel structure anticorrosive paint disclosed by the invention is simple in raw material components, environment-friendly, and good in mechanical strength, light-resistant, salt mist-resistant and other chemical corrosion resistance and heat preservation performance, and good in weather resistance and long in anticorrosive performance.
Detailed Description
The technical scheme of the invention is explained in detail below with reference to specific examples, raw materials used in the invention are commercially available unless otherwise specified, and the method is a conventional method unless otherwise specified.
Preparation of raw materials
Preparation of vermiculite-supported zinc oxide
Dispersing the vermiculite after pickling in Zn 2+ In the reducing sugar solution of (2), carrying out ultrasonic treatment to obtain a dispersion liquid, and placing the dispersion liquid in a tube furnace for roasting to obtain the vermiculite-loaded zinc oxide.
Wherein the Zn is 2+ Zn in reducing sugar solution of (2) 2+ The molar concentration of (2) is 0.02mol/L; the weight ratio of the addition amount of the vermiculite to the dispersion liquid is 1:2; the reducing sugar is glucose, and the particle size of the vermiculite is 400-500 meshes; the roasting temperature is 900-1000 ℃;
preparation of graphene/silica/titania composites
Preparation of a silica precursor: dispersing tetraethyl silicate in an absolute ethanol solution, and uniformly stirring to obtain a silicon dioxide precursor solution;
preparation of a titanium dioxide precursor: dissolving tetrabutyl titanate and glacial acetic acid in deionized water, and uniformly stirring to obtain a titanium dioxide precursor;
adding a titanium dioxide precursor solution into a silicon dioxide precursor solution under a stirring condition, adding citric acid into a system, stirring and reacting for 10-12 hours at 200-220 ℃ under a light-shielding condition, adding ethanol, and centrifugally separating to obtain a graphene/silicon dioxide/titanium dioxide compound;
wherein the weight ratio of the tetraethyl silicate to the tetrabutyl titanate to the citric acid is 1:1:1.5.
Preparation of graphene/silica composites
Preparation of a silica precursor: dispersing tetraethyl silicate in an ethanol water solution, and uniformly stirring to obtain a silicon dioxide precursor solution;
adding citric acid into the silicon dioxide precursor solution under the stirring condition, stirring and reacting for 10-12 hours at 200-220 ℃ under the light-shielding condition, adding ethanol, and centrifugally separating to obtain a graphene/silicon dioxide compound;
wherein the weight ratio of the tetraethyl silicate to the citric acid is 1:1.5.
Preparation of graphene/titanium dioxide composites
Preparation of a titanium dioxide precursor: dissolving tetrabutyl titanate and glacial acetic acid in deionized water, and uniformly stirring to obtain a titanium dioxide precursor;
adding citric acid into the titanium dioxide precursor solution under stirring, stirring and reacting for 10-12 hours at 200-220 ℃ under the dark condition, adding ethanol, and centrifugally separating to obtain a graphene/silicon dioxide/titanium dioxide compound;
wherein the weight ratio of the tetrabutyl titanate to the citric acid is 1:1.5.
Example 1
An environment-friendly steel structure anticorrosive paint comprises the following preparation raw materials in parts by weight: 90 parts of epoxy resin, 15 parts of vermiculite supported zinc oxide, 10 parts of graphene/silicon dioxide/titanium dioxide compound, 12 parts of aminosilane coupling agent and 5 parts of curing agent; wherein the epoxy resin is bisphenol A type epoxy resin; the aminosilane coupling agent is KH550; the curing agent is a mixture of diethylenetriamine and thiourea in a weight ratio of 1:1.
The preparation method specifically comprises the following steps:
dispersing vermiculite loaded zinc oxide in deionized water, adding graphene/silicon dioxide/titanium dioxide compound into the deionized water, dispersing uniformly, gradually adding an aminosilane coupling agent into the mixture, stirring the mixture at 40-50 ℃ for reaction for 1-2 hours, adding epoxy resin into the mixture, and stirring the mixture for reaction to obtain a coating component A;
and uniformly mixing the curing agent with the component A, and curing to obtain the steel structure anticorrosive paint.
Example 2
An environment-friendly steel structure anticorrosive paint comprises the following preparation raw materials in parts by weight: 95 parts of epoxy resin, 17 parts of vermiculite supported zinc oxide, 13 parts of graphene/silicon dioxide/titanium dioxide compound, 13 parts of aminosilane coupling agent and 7 parts of curing agent; wherein the epoxy resin is bisphenol A type epoxy resin; the aminosilane coupling agent is KH550; the curing agent is a mixture of diethylenetriamine and thiourea in a weight ratio of 1:1.
The preparation method specifically comprises the following steps:
dispersing vermiculite loaded zinc oxide in deionized water, adding graphene/silicon dioxide/titanium dioxide compound into the deionized water, dispersing uniformly, gradually adding an aminosilane coupling agent into the mixture, stirring the mixture at 40-50 ℃ for reaction for 1-2 hours, adding epoxy resin into the mixture, and stirring the mixture for reaction to obtain a coating component A;
and uniformly mixing the curing agent with the component A, and curing to obtain the steel structure anticorrosive paint.
Example 3
An environment-friendly steel structure anticorrosive paint comprises the following preparation raw materials in parts by weight: 100 parts of epoxy resin, 17.5 parts of vermiculite supported zinc oxide, 15 parts of graphene/silicon dioxide/titanium dioxide compound, 14 parts of aminosilane coupling agent and 7.5 parts of curing agent; wherein the epoxy resin is bisphenol A type epoxy resin; the aminosilane coupling agent is KH550; the curing agent is a mixture of diethylenetriamine and thiourea in a weight ratio of 1:1.
The preparation method specifically comprises the following steps:
dispersing vermiculite loaded zinc oxide in deionized water, adding graphene/silicon dioxide/titanium dioxide compound into the deionized water, dispersing uniformly, gradually adding an aminosilane coupling agent into the mixture, stirring the mixture at 40-50 ℃ for reaction for 1-2 hours, adding epoxy resin into the mixture, and stirring the mixture for reaction to obtain a coating component A;
and uniformly mixing the curing agent with the component A, and curing to obtain the steel structure anticorrosive paint.
Example 4
An environment-friendly steel structure anticorrosive paint comprises the following preparation raw materials in parts by weight: 105 parts of epoxy resin, 18 parts of vermiculite supported zinc oxide, 17 parts of graphene/silicon dioxide/titanium dioxide compound, 15 parts of aminosilane coupling agent and 8 parts of curing agent; wherein the epoxy resin is bisphenol A type epoxy resin; the aminosilane coupling agent is KH550; the curing agent is a mixture of diethylenetriamine and thiourea in a weight ratio of 1:1.
The preparation method specifically comprises the following steps:
dispersing vermiculite loaded zinc oxide in deionized water, adding graphene/silicon dioxide/titanium dioxide compound into the deionized water, dispersing uniformly, gradually adding an aminosilane coupling agent into the mixture, stirring the mixture at 40-50 ℃ for reaction for 1-2 hours, adding epoxy resin into the mixture, and stirring the mixture for reaction to obtain a coating component A;
and uniformly mixing the curing agent with the component A, and curing to obtain the steel structure anticorrosive paint.
Example 5
An environment-friendly steel structure anticorrosive paint comprises the following preparation raw materials in parts by weight: 110 parts of epoxy resin, 20 parts of vermiculite supported zinc oxide, 20 parts of graphene/silicon dioxide/titanium dioxide compound, 16 parts of aminosilane coupling agent and 10 parts of curing agent; wherein the epoxy resin is bisphenol A type epoxy resin; the aminosilane coupling agent is KH550; the curing agent is a mixture of diethylenetriamine and thiourea in a weight ratio of 1:1.
The preparation method specifically comprises the following steps:
dispersing vermiculite loaded zinc oxide in deionized water, adding graphene/silicon dioxide/titanium dioxide compound into the deionized water, dispersing uniformly, gradually adding an aminosilane coupling agent into the mixture, stirring the mixture at 40-50 ℃ for reaction for 1-2 hours, adding epoxy resin into the mixture, and stirring the mixture for reaction to obtain a coating component A;
and uniformly mixing the curing agent with the component A, and curing to obtain the steel structure anticorrosive paint.
Comparative example 1
The preparation raw materials and the preparation method of the steel structure anticorrosive paint of the comparative example 1 are basically the same as those of the steel structure anticorrosive paint of the example 3, except that vermiculite loaded zinc oxide is replaced by an equal amount of mixture of expanded vermiculite powder and zinc oxide powder; wherein the expanded vermiculite powder is obtained by roasting 400-500 meshes of vermiculite powder; zinc oxide powder is prepared from expanded vermiculite 2 times of Zn 2+ The reducing sugar solution (0.02 mol/L) is obtained by roasting in a tube furnace, wherein the reducing sugar is glucose.
Comparative example 2
Comparative example 2 the steel structure anticorrosive paint preparation raw material and the preparation method are substantially the same as those of example 3 except that the graphene/silica/titania composite is replaced with an equivalent amount of the graphene/silica composite.
Comparative example 3
Comparative example 3 the steel structure anticorrosive paint preparation raw material and the preparation method are basically the same as those of example 3 except that the graphene/silica/titania composite is replaced with an equivalent amount of graphene/titania composite.
Performance testing
Coating properties: the properties of the coatings prepared in examples 1 to 5 of the present invention were tested, and the test methods are shown in Table 1; the test results are shown in Table 2.
TABLE 1 paint Performance test method
TABLE 2 coating Performance test results
As can be seen from the data in Table 2, the coatings prepared in examples 1-5 of the present invention meet the requirements of the steel structure anticorrosive coating and have good anticorrosive and wear-resistant properties.
Thermal insulation performance: the coatings prepared in examples 1 to 5 and comparative examples 1 to 3 of the present invention were tested for thermal conductivity by referring to ISO22007-2, and the test results are shown in Table 3.
TABLE 3 thermal insulation test results
| Test item | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Thermal conductivity W/(m.k) | 0.30 | 0.29 | 0.24 | 0.27 | 0.26 | 0.46 | 0.38 | 0.40 |
As can be seen from the data in Table 3, the coatings prepared in examples 1 to 5 of the present invention had lower thermal conductivity than comparative examples 1 to 3, and the lower thermal conductivity indicates that the coatings had better heat insulating properties, and thus, the coatings prepared in examples 1 to 5 of the present invention had better heat insulating properties than comparative examples 1 to 3.
Corrosion resistance: the coatings prepared in examples 1 to 5 and comparative examples 1 to 3 of the present invention were tested for adhesion, abrasion resistance, and acid, alkali and salt spray resistance, and the adhesion test method was referred to GB/T1720-1979; wear resistance test is referred to GB/T1768-2006; salt spray resistance test method refers to GB/T1771-2007; the test results are shown in Table 4.
TABLE 4 test results of corrosion resistance
As can be seen from the data in Table 4, the adhesion force of the anticorrosive paint prepared in examples 1-5 of the present invention meets the paint standard, and the abrasion resistance and salt spray resistance of the paint in examples 1-5 are higher than those of comparative examples 1-3; from this, it can be seen that the invention adopts vermiculite loaded zinc oxide and graphene/silica/titanium dioxide composite as inorganic filler, which plays an important role in improving the wear resistance and corrosion resistance of the paint, and compared with example 3, comparative example 1 uses the mixture of expanded vermiculite powder and zinc oxide powder instead of vermiculite loaded zinc oxide, and the wear resistance is slightly worse than that of example 3, and the salt fog resistance is significantly reduced; the analysis reasons may be that the simple powder is poor in dispersibility in the coating matrix after being mixed, and the enhancement of the wear resistance of the coating is affected; meanwhile, the compactness of the coating is affected, so that the corrosion resistance of the coating is reduced; the problem of sedimentation of zinc oxide powder can be caused after long-term storage; comparative examples 2 and 3, compared to example 3, respectively, use graphene/silica composite, graphene/titania composite instead of graphene/silica/titania; the three components have synergistic effect in enhancing the wear resistance of the paint and improving the corrosion resistance of the paint, and the three components can effectively enhance the interaction between each component and the paint matrix, thereby being beneficial to fully playing the roles of each component and improving the wear resistance and the corrosion resistance of the paint.
The above embodiments are merely preferred embodiments of the present invention, the protection scope of the present invention is not limited thereto, and any simple changes or equivalent alternatives of the technical solutions that can be obviously obtained by those skilled in the art within the technical scope of the present invention disclosed herein fall within the protection scope of the present invention.
Claims (10)
1. The environment-friendly steel structure anticorrosive paint is characterized by comprising the following raw materials: epoxy resin, vermiculite loaded zinc oxide, an aminosilane coupling agent, a graphene oxide/titanium dioxide compound and a curing agent.
2. The environment-friendly steel structure anticorrosive paint as claimed in claim 1, comprising the following preparation raw materials in parts by weight: 90-110 parts of epoxy resin, 15-20 parts of vermiculite supported zinc oxide, 10-20 parts of graphene/silicon dioxide/titanium dioxide compound, 12-16 parts of aminosilane coupling agent and 5-10 parts of curing agent.
3. The environmental protection type steel structure anticorrosive paint according to claim 1 or 2, wherein the epoxy resin is bisphenol a type epoxy resin.
4. The environment-friendly steel structure anticorrosive paint as claimed in claim 1 or 2, wherein the vermiculite-supported zinc oxide is prepared by the following method: dispersing the vermiculite after pickling in Zn 2+ Is subjected to ultrasonic treatment to obtain a fractionAnd (3) dispersing the solution, and roasting the dispersed solution in a tube furnace to obtain the vermiculite loaded zinc oxide.
5. The environmental protection type steel structure anticorrosive paint according to claim 4, wherein the Zn 2+ Zn in reducing sugar solution of (2) 2+ The molar concentration of (2) is 0.02mol/L; the weight ratio of the addition amount of the vermiculite to the dispersion liquid is 1:2.
6. The environment-friendly steel structure anticorrosive paint as claimed in claim 1 or 2, wherein the graphene/silicon dioxide/titanium dioxide composite is prepared by the following method:
preparation of a silica precursor: dispersing tetraethyl silicate in an ethanol solution, and uniformly stirring to obtain a silicon dioxide precursor solution;
preparation of a titanium dioxide precursor: dissolving tetrabutyl titanate and glacial acetic acid in deionized water, and uniformly stirring to obtain a titanium dioxide precursor solution;
under the stirring condition, gradually adding the titanium dioxide precursor solution into the silicon dioxide precursor solution, then adding citric acid into the system, stirring and reacting for 10-12 hours at 200-220 ℃ under the light-proof condition, adding ethanol, and centrifugally separating to obtain the graphene/silicon dioxide/titanium dioxide composite.
7. The environment-friendly steel structure anticorrosive paint as claimed in claim 6, wherein the weight ratio of the tetraethyl silicate, the tetrabutyl titanate and the citric acid is 1:1:1.5.
8. The anticorrosive paint for environment-friendly steel structures as claimed in claim 1 or 2, wherein the aminosilane coupling agent is KH550.
9. The environmental protection type steel structure anticorrosive paint according to claim 1 or 2, wherein the curing agent is a mixture of diethylenetriamine and thiourea.
10. The method for preparing the environment-friendly steel structure anticorrosive paint as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps:
dispersing vermiculite loaded zinc oxide in deionized water, adding graphene/silicon dioxide/titanium dioxide compound into the deionized water, dispersing uniformly, gradually adding an aminosilane coupling agent into the mixture, stirring the mixture at 40-50 ℃ for reaction for 1-2 hours, adding epoxy resin into the mixture, and stirring the mixture for reaction to obtain a coating component A;
and uniformly mixing the curing agent with the component A, and curing to obtain the steel structure anticorrosive paint.
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| CN118307699A (en) * | 2024-06-07 | 2024-07-09 | 龙朴科技(衢州)有限公司 | Slurry method parallel process for improving UHMWPE performance by using nanotechnology |
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| CN110218504A (en) * | 2019-06-25 | 2019-09-10 | 河南省宏瑞防腐安装有限公司 | A kind of steel structure anti-corrosion paint |
| CN110229587A (en) * | 2019-06-25 | 2019-09-13 | 河南省宏瑞防腐安装有限公司 | A kind of solvent-free steel structure anti-corrosion paint |
| CN115621525A (en) * | 2022-08-17 | 2023-01-17 | 河南工学院 | Durable lithium battery |
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| CN110218504A (en) * | 2019-06-25 | 2019-09-10 | 河南省宏瑞防腐安装有限公司 | A kind of steel structure anti-corrosion paint |
| CN110229587A (en) * | 2019-06-25 | 2019-09-13 | 河南省宏瑞防腐安装有限公司 | A kind of solvent-free steel structure anti-corrosion paint |
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