CN117866470B - Modified composite coating for railway bridge steel structure and preparation method thereof - Google Patents
Modified composite coating for railway bridge steel structure and preparation method thereof Download PDFInfo
- Publication number
- CN117866470B CN117866470B CN202410242728.9A CN202410242728A CN117866470B CN 117866470 B CN117866470 B CN 117866470B CN 202410242728 A CN202410242728 A CN 202410242728A CN 117866470 B CN117866470 B CN 117866470B
- Authority
- CN
- China
- Prior art keywords
- stirring
- graphene
- epoxy
- steel structure
- modified
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 94
- 239000011248 coating agent Substances 0.000 title claims abstract description 92
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 57
- 239000010959 steel Substances 0.000 title claims abstract description 57
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 239000004593 Epoxy Substances 0.000 claims abstract description 102
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 99
- 239000003973 paint Substances 0.000 claims abstract description 95
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 73
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 59
- 239000011701 zinc Substances 0.000 claims abstract description 59
- 229910052742 iron Inorganic materials 0.000 claims abstract description 48
- 229920002635 polyurethane Polymers 0.000 claims abstract description 37
- 239000004814 polyurethane Substances 0.000 claims abstract description 37
- 238000003756 stirring Methods 0.000 claims description 95
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 239000003094 microcapsule Substances 0.000 claims description 31
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 24
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 22
- 239000000243 solution Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 21
- 239000011259 mixed solution Substances 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 19
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 18
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 18
- 239000006185 dispersion Substances 0.000 claims description 18
- 239000012046 mixed solvent Substances 0.000 claims description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000008367 deionised water Substances 0.000 claims description 15
- 229910021641 deionized water Inorganic materials 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- -1 4-methyl-5- (1-naphthyl) -2-aminothiazole modified graphene Chemical class 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 13
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 12
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 12
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 9
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 229920005749 polyurethane resin Polymers 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 7
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 claims description 6
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 claims description 6
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000007605 air drying Methods 0.000 claims description 6
- 239000002518 antifoaming agent Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000007795 chemical reaction product Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000003085 diluting agent Substances 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 239000011541 reaction mixture Substances 0.000 claims description 6
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 239000002562 thickening agent Substances 0.000 claims description 6
- 239000000080 wetting agent Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 4
- ASOKPJOREAFHNY-UHFFFAOYSA-N 1-Hydroxybenzotriazole Chemical compound C1=CC=C2N(O)N=NC2=C1 ASOKPJOREAFHNY-UHFFFAOYSA-N 0.000 claims description 3
- LMDZBCPBFSXMTL-UHFFFAOYSA-N 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide Chemical compound CCN=C=NCCCN(C)C LMDZBCPBFSXMTL-UHFFFAOYSA-N 0.000 claims description 3
- WANSLCSWLWQFFL-UHFFFAOYSA-N 4-methyl-5-naphthalen-1-yl-1,3-thiazol-2-amine Chemical compound N1=C(N)SC(C=2C3=CC=CC=C3C=CC=2)=C1C WANSLCSWLWQFFL-UHFFFAOYSA-N 0.000 claims description 3
- PQSUYGKTWSAVDQ-ZVIOFETBSA-N Aldosterone Chemical compound C([C@@]1([C@@H](C(=O)CO)CC[C@H]1[C@@H]1CC2)C=O)[C@H](O)[C@@H]1[C@]1(C)C2=CC(=O)CC1 PQSUYGKTWSAVDQ-ZVIOFETBSA-N 0.000 claims description 3
- PQSUYGKTWSAVDQ-UHFFFAOYSA-N Aldosterone Natural products C1CC2C3CCC(C(=O)CO)C3(C=O)CC(O)C2C2(C)C1=CC(=O)CC2 PQSUYGKTWSAVDQ-UHFFFAOYSA-N 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 3
- 229960002478 aldosterone Drugs 0.000 claims description 3
- 235000019270 ammonium chloride Nutrition 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 3
- 239000007853 buffer solution Substances 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 239000006184 cosolvent Substances 0.000 claims description 3
- 239000013530 defoamer Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000003112 inhibitor Substances 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 239000001038 titanium pigment Substances 0.000 claims description 3
- 238000009775 high-speed stirring Methods 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 17
- 230000007797 corrosion Effects 0.000 abstract description 14
- 239000010410 layer Substances 0.000 description 35
- 238000012360 testing method Methods 0.000 description 13
- 238000005187 foaming Methods 0.000 description 12
- 230000032683 aging Effects 0.000 description 8
- 150000003839 salts Chemical class 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000011056 performance test Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000005488 sandblasting Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009435 amidation Effects 0.000 description 1
- 238000007112 amidation reaction Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 150000003557 thiazoles Chemical class 0.000 description 1
- 239000002966 varnish 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a modified composite coating for a railway bridge steel structure and a preparation method thereof, and belongs to the technical field of preparation of coating; the special epoxy zinc-rich antirust primer layer, the epoxy cloud iron intermediate paint layer and the graphene modified acrylic polyurethane finish paint layer are sequentially sprayed on a railway bridge steel structure from inside to outside. The technical scheme provided by the invention solves the problems of unstable single coating performance and low corrosion resistance of the traditional railway bridge steel structure, effectively improves the anti-collision, corrosion-resistant and weather-resistant capabilities of the coating, and prolongs the service life of the railway bridge steel structure.
Description
Technical Field
The invention relates to the technical field of paint coating preparation, in particular to a modified composite coating for a railway bridge steel structure and a preparation method thereof.
Background
In the prior art, when the heavy anti-corrosion coating matching system of the railway bridge steel structure is applied to places with high corrosion levels, such as C4 high corrosion levels, corresponding typical environment examples are industrial areas with medium salinity and coastal areas; such as C5, a very high corrosion level, corresponding typical environmental examples are industrial areas of high humidity and harsh atmosphere and coastal areas of high salinity. Meanwhile, the coating scheme of the 6th coating system in the existing enterprise standard Q/CR749.1-2020 is as follows: specially made epoxy zinc-rich antirust primer or water-based inorganic zinc-rich antirust primer, cloud iron epoxy intermediate paint and gray acrylic aliphatic polyurethane finish paint.
The salt spray resistance of the special epoxy zinc-rich antirust primer is required by the existing standard, namely 1000 hours, the surface of the template can be slightly foamed, red rust is avoided, and the scratch position is free from red rust for 24 hours; the artificial accelerated aging resistance of the existing standard to the acrylic polyurethane finish paint is 1000 hours; the special epoxy zinc-rich antirust primer in the prior art has the advantages that enough zinc content is needed in zinc powder to generate an initial sacrificial anode, so that the metal is protected from corrosion. However, the existing zinc-rich paint has the problems that the zinc powder has high content, and the zinc powder has high porosity and high surface activity due to the inherent characteristics of the zinc powder, so that the brittleness of the coating is high, and cracks are easy to occur.
In practical application, the railway bridge steel structure is in a use state in open air, and under working conditions, the railway bridge steel structure has certain fine deformation under working conditions of use and load; after the coating has micro cracks, the cracks are easy to accelerate to expand, so that the coating is invalid, after the primer cracks, corrosive media such as rainwater and the like are directly contacted with steel, and the rust-proof effect of zinc powder in the primer is greatly weakened, so that steel rust is caused; in practical applications, it is not possible to provide longer protection for railway bridge steel structures in places where the corrosion levels are high, such as in industrial areas where typical environmental examples are high humidity and severe atmosphere, and in coastal areas where salinity is high.
According to the enterprise standard Q/CR749.1-2020, "railway bridge Steel Structure and component protection coating and paint", the protection coating system, technical requirements, inspection methods, inspection rules and paint packaging, marking, transportation and storage of railway Steel beams are specified. Many existing products are produced according to the standard, and the effect of the existing products applied to the railway bridge steel structure can only meet the requirements in the standard. However, along with the requirement of rapidly searching the existing technical standard of the bridge road, the actual use requirement cannot be met, and a high-performance composite coating capable of being applied to the railway bridge steel structure is needed in the market so as to meet the protection requirement of the railway bridge steel structure in more environments.
Disclosure of Invention
The invention aims to provide a modified composite coating for a railway bridge steel structure and a preparation method thereof, which are used for solving the problems that the railway bridge steel structure protective coating in the prior art is unstable in performance, low in corrosion resistance, incapable of realizing self-repairing and the like.
The invention is realized by the following technical scheme: a modified composite coating for a railway bridge steel structure comprises a special epoxy zinc-rich antirust primer layer, an epoxy cloud iron intermediate paint layer and a graphene modified acrylic polyurethane finish paint layer which are sequentially sprayed on the railway bridge steel structure from inside to outside.
Further, the special epoxy zinc-rich antirust primer layer comprises self-repairing microcapsules, and when the pH value of the surface of the bottom steel structure is less than or equal to 6, the self-repairing microcapsules are broken to release wrapped functionalized graphene acrylic slurry.
Further, the thickness of the special epoxy zinc-rich antirust primer layer is 80-195 microns, the thickness of the epoxy cloud iron intermediate paint layer is 200-350 microns, and the thickness of the graphene modified acrylic polyurethane top paint layer is 65-85 microns.
Further, the zinc powder in the epoxy zinc-rich antirust primer is 75-85 wt%, the cloud iron powder in the epoxy cloud iron intermediate paint is 20-50 wt%, and the high-hydroxyl acrylic polyurethane resin in the graphene modified acrylic polyurethane finish paint is 50-70 wt%.
The invention also provides a preparation method of the modified composite coating for the railway bridge steel structure, which can comprise the following steps: s100, preparing special epoxy zinc-rich antirust primer; s200, preparing epoxy cloud iron intermediate paint; s300, preparing graphene modified acrylic polyurethane finish paint; and S400, spraying the special epoxy zinc-rich antirust primer prepared in the step S100, the epoxy iron cloud intermediate paint prepared in the step S200 and the graphene modified acrylic polyurethane finishing paint prepared in the step S300 on the railway bridge steel structure layer by layer from inside to outside to prepare the modified composite coating for the railway bridge steel structure.
Further, preparing the special epoxy zinc-rich rust inhibitive primer may include the steps of: s110, stirring and mixing the epoxy resin and the resin diluent uniformly, and respectively adding a dispersing wetting agent, a defoaming agent and a thickening agent to stir and mix uniformly to obtain a resin mixture, wherein the stirring speed is 850-900 rpm, and the stirring time is 20-35 min; s120, sequentially adding zinc powder, ferrophosphorus powder, an anti-settling agent, glass beads and a thickening agent into the resin mixture, and stirring and uniformly mixing to obtain a film-forming component, wherein the stirring speed is 1300-160 rpm, and the time is 100-115 min; and the adding time interval of the adjacent raw materials is 20min; s130, stirring and mixing the curing agent and the curing diluent uniformly, and then adding the flash rust inhibitor to stir and mix uniformly to obtain a curing component; s140, preparing self-repairing microcapsules; and S150, putting the film forming component, the curing component and the self-repairing microcapsule into a stirring kettle, stirring at a low speed for 20min, adding the defoaming agent and the anti-settling agent, and stirring at a medium speed for 20min to obtain the special epoxy zinc-rich antirust primer.
Further, the preparation of the self-repairing microcapsule specifically comprises the following steps: s141, dispersing graphene in deionized water, and stirring at a high speed, wherein the stirring speed is 1200-1500rpm, and the stirring time is 20-35 min; s142, respectively adding acrylic acid after uniformly dispersing graphene, heating and stirring to prepare functionalized graphene acrylic acid slurry, wherein the stirring speed is 1000-1100rpm, the time is 60-90 min, and the heating temperature is 60-80 ℃; s143, placing a beaker filled with deionized water on a hot plate, adding an ethylene maleic anhydride copolymer aqueous solution into the beaker, stirring, and simultaneously adding urea, ammonium chloride and resorcinol into the solution to obtain a first mixed solution, wherein the stirring speed is 800-1000rpm, the time is 40-55 min, and the heating temperature is 55-70 ℃; s144, adding sodium hydroxide solution to raise the pH of the first mixed solution to 3.5, adding 1-2 drops of octanol to prevent surface bubbles, slowly adding dicyclopentadiene into the first mixed solution and stabilizing the dicyclopentadiene for 5 minutes, and then adding the functionalized graphene acrylic slurry into the solution and uniformly stirring to obtain a second mixed solution, wherein the stirring speed is 500-700rpm, and the time is 30-45 minutes; s145, adding formaldehyde and aldosterone buffer solution into the second mixed solution after the second mixed solution is stabilized, and adjusting the pH value, maintaining the pH value in the finishing paint stable, preventing the microcapsule from being broken in advance, and stirring to form urea-formaldehyde microcapsule, wherein the stirring speed is 500-700rpm, the time is 4-6 h, and the temperature is 45-50 ℃;
And S146, cooling the stirred second mixed solution to the ambient temperature, separating the microcapsule from the solution in a vacuum environment, washing with deionized water to remove excessive solvent, and then air-drying the microcapsule to obtain the self-repairing microcapsule wrapping the functionalized graphene acrylic acid slurry, wherein the washing times are 5-7 times, and the air-drying time is 24-48 hours.
Further, the preparation of the epoxy cloud iron intermediate paint can comprise the following steps: s210, preparing 4-methyl-5- (1-naphthyl) -2-aminothiazole modified graphene oxide; s220, adding 4-methyl-5- (1-naphthyl) -2-aminothiazole modified graphene oxide and a dispersing agent into bisphenol A epoxy resin, and fully stirring to obtain a uniformly dispersed modified graphene oxide/bisphenol A epoxy resin compound, wherein the stirring speed is 850-900 rpm, and the time is 55-75 min; and S230, adjusting the stirring rotation speed to 550-600 rpm, sequentially adding a cosolvent, glass phosphorus flakes and mica iron oxide into the modified graphene oxide/bisphenol A epoxy resin compound, stirring for 55-75 min, adding a curing agent, adjusting the stirring rotation speed to 850-900 rpm, and stirring for 65-85 min to obtain the epoxy iron cloud intermediate paint.
Further, the preparation of the 4-methyl-5- (1-naphthyl) -2-aminothiazole modified graphene oxide may include the steps of: s211, placing flaky graphene oxide in an ethanol solvent for ultrasonic dispersion, adding triethylamine serving as a catalyst into the graphene oxide ethanol suspension after the dispersion is completed, and then placing a reaction mixture in an ice bath for storage to obtain a first mixed solvent, wherein the ultrasonic dispersion frequency is 95-120 KHz, the dispersion time is 35-65 min, and the ice bath temperature is 4-1 ℃; s212, dissolving 4-methyl-5- (1-naphthyl) -2-aminothiazole in an N, N-dimethylformamide solvent, then placing the solution in an ice bath, and keeping the reaction temperature between 0 ℃ and 4 ℃ below zero to obtain a second mixed solvent; s213, mixing the first mixed solvent and the second mixed solvent to prepare a third mixed solvent, then adding 1-hydroxybenzotriazole and 1-ethyl- (3-dimethylaminopropyl) carbodiimide into the third mixed solvent, continuously stirring for 10-12 hours at room temperature, and filtering after the reaction is completed; s214, firstly washing the filter material for 2-4 times by using N, N-dimethylformamide, and then washing the filter material for 2-4 times by using deionized water; and S215, placing the washed reaction product in an oven for drying, wherein the drying temperature is 55-75 ℃, and the drying degree is that the humidity of the reaction product is less than 13%, so that the 4-methyl-5- (1-naphthyl) -2-aminothiazole modified graphene oxide is prepared.
Further, the preparation of the graphene modified acrylic polyurethane finish paint can comprise the following steps: s310, firstly, placing graphene in an ethanol solvent for ultrasonic dispersion, adding triethylamine serving as a catalyst into the graphene ethanol suspension after the dispersion is completed, and then placing a reaction mixture in an ice bath for storage to obtain a first mixed material, wherein the ultrasonic dispersion frequency is 95-120 KHz, the dispersion time is 35-65 min, and the ice bath temperature is 4-1 ℃; s320, adding the high-hydroxyl acrylic polyurethane resin into the hydroxyl acrylic dispersion, mixing deionized water, a dispersing agent and titanium pigment, uniformly stirring, grinding until the fineness is less than or equal to 25 mu m, adding the mixture into the hydroxyl acrylic dispersion, uniformly stirring, and preparing a second mixed material; s330, mixing the first mixed material and the second mixed material according to the mass ratio of 1:8, adding a substrate wetting agent, an organosilicon defoamer, a catalyst and a polyurethane association type rheological auxiliary agent, and stirring uniformly again to obtain the graphene modified acrylic polyurethane finish paint.
Compared with the prior art, the invention has the beneficial effects that:
(1) The composite coating is prepared from the special epoxy zinc-rich antirust primer, the epoxy iron cloud intermediate paint and the graphene modified acrylic polyurethane finish paint, so that the problems of unstable performance, low corrosion resistance and the like of a single coating of a traditional railway bridge steel structure are solved, and the anti-collision, corrosion-resistant and weather-resistant capabilities of the coating are effectively improved.
(2) The self-repairing microcapsule with environmental sensitivity improves the corrosion resistance of the epoxy zinc-rich antirust primer layer, and when the pH value of the environment changes, the microcapsule breaks to release the wrapped graphene acrylic slurry, so that cracks can be fully filled and shielded, invasion of corrosive substances is isolated, and the epoxy zinc-rich antirust primer layer has salt fog resistance of more than 4000 hours by adding the microcapsule with the self-repairing function into the primer.
(3) According to the epoxy cloud iron intermediate paint prepared by the invention, 4-methyl-5- (1-naphthyl) -2-aminothiazole modified graphene oxide is introduced, thiazole compounds have larger pi electrons to delocalize, so that the interlayer distance between the modified graphene oxides is shortened, the interaction force between the graphene oxides is enhanced through the graphene oxide subjected to functional modification, the graphene oxide is easier to uniformly disperse in a system, after amidation modification, the bonding between the graphene oxide and a matrix material is firmer, the modified graphene oxide has larger volume, the pores and defects of an epoxy condensate can be better plugged, a denser shielding layer is facilitated to be generated, and the corrosion inhibition of the graphene oxide is greatly enhanced; in addition, in the preparation process, the thickness of the one-time coating is larger than 200 mu m, and the thickness of the finally formed epoxy cloud iron intermediate paint layer is 200-350 mu m and is far higher than that of a common intermediate paint layer, so that the cloud iron epoxy intermediate paint has excellent super-barrier and super-corrosion-resistant properties
(4) According to the graphene modified acrylic polyurethane finish paint disclosed by the invention, the high-hydroxyl acrylic polyurethane resin is modified through graphene, the hardness and wear resistance of an acrylic polyurethane finish paint layer are obviously improved through the extremely high strength and modulus of graphene, the gas and water vapor barrier property of the coating can be improved through a graphene layered structure, so that the corrosion resistance is improved, meanwhile, the heat conducting property of the whole composite coating is improved due to the existence of graphene materials in the primer, the intermediate paint and the finish paint, and the thermal stability of the composite coating is enhanced.
Detailed Description
The present invention will be described in further detail with reference to the following examples, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent, and the description thereof is merely illustrative of the present invention and not intended to be limiting. In addition, for numerical ranges in this disclosure, it is understood that each intermediate value between the upper and lower limits of the ranges is also specifically disclosed. Every smaller range between any stated value or stated range, and any other stated value or intermediate value within the stated range, is also encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the invention described herein without departing from the scope or spirit of the invention. Other embodiments will be apparent to those skilled in the art from consideration of the specification of the present invention. The specification and examples of the present invention are exemplary only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Example embodiment 1:
The embodiment provides a modified composite coating for a railway bridge steel structure, which comprises a special epoxy zinc-rich antirust primer layer, an epoxy cloud iron intermediate paint layer and a graphene modified acrylic polyurethane top paint layer which are sequentially sprayed on the railway bridge steel structure from inside to outside.
Specifically, the special epoxy zinc-rich antirust primer layer comprises self-repairing microcapsules, and when the pH value of the surface of the bottom steel structure is less than or equal to 6, the self-repairing microcapsules are ruptured to release wrapped functionalized graphene acrylic slurry.
The thickness of the special epoxy zinc-rich antirust primer layer is 80-195 microns, the thickness of the epoxy cloud iron intermediate paint layer is 200-350 microns, and the thickness of the graphene modified acrylic polyurethane top paint layer is 65-85 microns. 75-85 wt% of zinc powder in the epoxy zinc-rich antirust primer, 20-50 wt% of cloud iron powder in the epoxy cloud iron intermediate paint, and 50-70 wt% of high-hydroxyl acrylic polyurethane resin in the graphene modified acrylic polyurethane finish paint.
The modified composite coating for the railway bridge steel structure is prepared by spraying special epoxy zinc-rich antirust primer, epoxy cloud iron intermediate paint and graphene modified acrylic polyurethane finish paint on the railway bridge steel structure layer by layer from inside to outside.
Example 2:
the example embodiment provides a preparation method of a modified composite coating for a railway bridge steel structure, which comprises the following steps:
S100, preparing the special epoxy zinc-rich antirust primer.
In particular, the following sub-steps may be included:
And S110, stirring and mixing the epoxy resin and the resin diluent uniformly, and respectively adding the dispersing wetting agent, the defoaming agent and the thickening agent to stir and mix uniformly to obtain a resin mixture, wherein the stirring speed is 850-900 rpm, and the stirring time is 20-35 min.
S120, sequentially adding zinc powder, ferrophosphorus powder, an anti-settling agent, glass beads and a thickening agent into the resin mixture, and stirring and uniformly mixing to obtain a film-forming component, wherein the stirring speed is 1300-160 rpm, and the time is 100-115 min; and the time interval of adding adjacent raw materials is 20min.
And S130, stirring and mixing the curing agent and the curing diluent uniformly, and adding the flash rust inhibitor for stirring and mixing uniformly to obtain the curing component.
S140, preparing the self-repairing microcapsule.
It should be noted that the preparation of the self-repairing microcapsule may comprise the following sub-steps:
S141, dispersing graphene in deionized water, and stirring at a high speed, wherein the stirring speed is 1200-1500rpm, and the stirring time is 20-35 min.
S142, respectively adding acrylic acid after the graphene is uniformly dispersed, heating and stirring to obtain the functionalized graphene acrylic acid slurry, wherein the stirring speed is 1000-1100rpm, the time is 60-90 min, and the heating temperature is 60-80 ℃.
S143, placing a beaker filled with deionized water on a hot plate, adding an ethylene maleic anhydride copolymer aqueous solution into the beaker, stirring, and simultaneously adding urea, ammonium chloride and resorcinol into the solution to obtain a first mixed solution, wherein the stirring speed is 800-1000rpm, the time is 40-55 min, and the heating temperature is 55-70 ℃.
S144, adding sodium hydroxide solution to raise the pH value of the first mixed solution to 3.5, adding 1-2 drops of octanol to prevent surface bubbles, slowly adding dicyclopentadiene into the first mixed solution and stabilizing the dicyclopentadiene for 5 minutes, and then adding the functionalized graphene acrylic slurry into the solution and uniformly stirring to obtain a second mixed solution, wherein the stirring speed is 500-700rpm, and the time is 30-45 minutes.
And S145, adding formaldehyde and aldosterone buffer solution into the second mixed solution after the second mixed solution is stabilized, and stirring to form urea-formaldehyde microcapsules, wherein the stirring speed is 500-700rpm, the time is 4-6 h, and the temperature is 45-50 ℃.
And S146, cooling the stirred second mixed solution to the ambient temperature, separating the microcapsule from the solution in a vacuum environment, washing with deionized water to remove excessive solvent, and then air-drying the microcapsule to obtain the self-repairing microcapsule wrapping the functionalized graphene acrylic acid slurry, wherein the washing times are 5-7 times, and the air-drying time is 24-48 hours.
And S150, putting the film forming component, the curing component and the self-repairing microcapsule into a stirring kettle, stirring at a low speed for 20min, adding the defoaming agent and the anti-settling agent, and stirring at a medium speed for 20min to obtain the special epoxy zinc-rich antirust primer.
S200, preparing the epoxy cloud iron intermediate paint.
Specifically, the following sub-steps may be included:
s210, firstly preparing the 4-methyl-5- (1-naphthyl) -2-aminothiazole modified graphene oxide.
It should be noted that, the step S210 may include the following sub-steps:
S211, placing the flaky graphene oxide into an ethanol solvent for ultrasonic dispersion, adding triethylamine serving as a catalyst into the graphene oxide ethanol suspension after the dispersion is completed, and then placing the reaction mixture into an ice bath for storage to obtain a first mixed solvent, wherein the ultrasonic dispersion frequency is 95-120 KHz, the dispersion time is 35-65 min, and the ice bath temperature is 4-1 ℃.
S212, dissolving 4-methyl-5- (1-naphthyl) -2-aminothiazole in an N, N-dimethylformamide solvent, then placing the solution in an ice bath, and keeping the reaction temperature between 0 ℃ and 4 ℃ below zero to obtain a second mixed solvent.
S213, mixing the first mixed solvent and the second mixed solvent to prepare a third mixed solvent, then adding 1-hydroxybenzotriazole and 1-ethyl- (3-dimethylaminopropyl) carbodiimide into the third mixed solvent, continuously stirring for 10-12 h at room temperature, and filtering after the reaction is completed.
S214, washing the filtered matter for 2-4 times by using N, N-dimethylformamide, and then washing the filtered matter for 2-4 times by using deionized water.
And S215, placing the washed reaction product in an oven for drying, wherein the drying temperature is 55-75 ℃, and the drying degree is that the humidity of the reaction product is less than 13%, so that the 4-methyl-5- (1-naphthyl) -2-aminothiazole modified graphene oxide is prepared.
And S220, adding the 4-methyl-5- (1-naphthyl) -2-aminothiazole modified graphene oxide and a dispersing agent into bisphenol A epoxy resin, and fully stirring to obtain a uniformly dispersed modified graphene oxide/bisphenol A epoxy resin compound, wherein the stirring speed is 850-900 rpm, and the stirring time is 55-75 min.
And S230, adjusting the stirring rotation speed to 550-600 rpm, sequentially adding a cosolvent, glass phosphorus flakes and mica iron oxide into the modified graphene oxide/bisphenol A epoxy resin compound, stirring for 55-75 min, adding a curing agent, adjusting the stirring rotation speed to 850-900 rpm, and stirring for 65-85 min to obtain the epoxy iron cloud intermediate paint.
S300, preparing graphene modified acrylic polyurethane finish paint.
Specifically, the following sub-steps may be included:
And S310, firstly, placing graphene in an ethanol solvent for ultrasonic dispersion, adding triethylamine serving as a catalyst into the graphene ethanol suspension after the dispersion is completed, and then placing the reaction mixture in an ice bath for storage to obtain a first mixed material, wherein the ultrasonic dispersion frequency is 95-120 KHz, the dispersion time is 35-65 min, and the ice bath temperature is 4-1 ℃.
S320, adding the high-hydroxyl acrylic polyurethane resin into the hydroxyl acrylic dispersion, mixing deionized water, a dispersing agent and titanium pigment, uniformly stirring, grinding until the fineness is less than or equal to 25 mu m, adding the mixture into the hydroxyl acrylic dispersion, uniformly stirring, and preparing a second mixed material.
S330, mixing the first mixed material and the second mixed material according to the mass ratio of 1:8, adding a substrate wetting agent, an organosilicon defoamer, a catalyst and a polyurethane association type rheological auxiliary agent, and stirring uniformly again to obtain the graphene modified acrylic polyurethane finish paint.
And S400, spraying the special epoxy zinc-rich antirust primer prepared in the step S100, the epoxy iron cloud intermediate paint prepared in the step S200 and the graphene modified acrylic polyurethane finishing paint prepared in the step S300 on the railway bridge steel structure layer by layer from inside to outside to prepare the modified composite coating for the railway bridge steel structure.
The composite coating prepared by the preparation method for the modified composite coating of the railway bridge steel structure in the exemplary embodiment completely meets the requirements of a 6 th coating system in the enterprise standard Q/CR749.1-2020 for protecting coating and coating of railway bridge steel structures and components.
Example 1
The preparation methods of the special epoxy zinc-rich antirust primer of the embodiment are the same as those of the primer prepared in the step S100 and the substeps in the exemplary embodiment 2;
The application of the special epoxy zinc-rich rust-proof primer can comprise the following steps:
Step S1, cleaning the surface of a steel structure, treating rust and loose iron scale impurities on the surface of the steel structure by adopting a sand blasting or polishing method, removing oil stains on the surface by using an organic solvent, and controlling the surface cleanliness to be Sa2.5;
S2, coating special epoxy zinc-rich antirust primer, and coating 2-3 special epoxy zinc-rich antirust primers on the surface of the cleaned steel structure, wherein the dry film thickness of each primer is controlled to be 40-65 mu m, so as to obtain an epoxy zinc-rich primer layer with the dry film thickness of 80-195 mu m;
In this example, a total of 3 special epoxy zinc-rich rust-proof primers were applied to obtain an epoxy zinc-rich primer layer with a dry film thickness of 160 μm.
Example 2:
The preparation methods of the special epoxy zinc-rich antirust primer and the epoxy cloud iron intermediate paint are the same as those of the primer prepared in the steps S100 and S200 and the substeps in the exemplary embodiment 2 and the intermediate paint.
The application of the special epoxy zinc-rich antirust primer and the epoxy cloud iron intermediate paint comprises the following steps:
Step S1, cleaning the surface of a steel structure, treating rust and loose iron scale impurities on the surface of the steel structure by adopting a sand blasting or polishing method, removing oil stains on the surface by using an organic solvent, and controlling the surface cleanliness to be Sa2.5;
S2, coating special epoxy zinc-rich antirust primer, and coating 2-3 special epoxy zinc-rich antirust primers on the surface of the cleaned steel structure, wherein the dry film thickness of each primer is controlled to be 40-65 mu m, so as to obtain an epoxy zinc-rich primer layer with the dry film thickness of 80-195 mu m;
S3, coating an epoxy cloud iron intermediate paint, namely coating 230-380 mu m of epoxy cloud iron intermediate paint on a special epoxy zinc-rich rust-proof primer at one time to obtain the epoxy cloud iron intermediate paint with a dry film thickness of 200-350 mu m;
In the embodiment, 3 special epoxy zinc-rich antirust primer layers are coated in total, an epoxy zinc-rich primer layer with a dry film thickness of 160 mu m is finally obtained, 1 epoxy cloud iron intermediate paint is coated in total, and the epoxy cloud iron intermediate paint with a dry film thickness of 235 mu m is finally obtained.
Example 3:
The special epoxy zinc-rich antirust primer, the epoxy cloud iron intermediate paint and the graphene modified acrylic polyurethane finishing paint in the embodiment are the same as the preparation methods in the steps S100, S200 and S300 and the substeps in the exemplary embodiment 2.
The application of the special epoxy zinc-rich antirust primer, the epoxy cloud iron intermediate paint and the graphene modified acrylic polyurethane finish paint comprises the following steps:
step S1, cleaning the surface of a steel structure, treating rust and loose iron scale impurities on the surface of the steel structure by adopting a sand blasting or polishing method, removing oil stains on the surface by using an organic solvent, and controlling the surface cleanliness to be Sa2.5; s2, coating special epoxy zinc-rich antirust primer, and coating 2-3 special epoxy zinc-rich antirust primers on the surface of the cleaned steel structure, wherein the dry film thickness of each primer is controlled to be 40-65 mu m, so as to obtain an epoxy zinc-rich primer layer with the dry film thickness of 80-195 mu m; s3, coating an epoxy cloud iron intermediate paint, namely coating 230-380 mu m of epoxy cloud iron intermediate paint on a special epoxy zinc-rich rust-proof primer at one time to obtain the epoxy cloud iron intermediate paint with a dry film thickness of 200-350 mu m; and S4, coating graphene modified acrylic polyurethane finish paint, and coating 70-90 mu m graphene modified acrylic polyurethane finish paint on the epoxy cloud iron intermediate paint at one time to obtain the epoxy cloud iron intermediate paint with a dry film thickness of 65-85 mu m.
Comparative example 1:
Comparative example 1 differs from example 3 in that comparative example 1 was not added with a self-healing capsule, but the self-healing capsule was replaced with an equivalent amount of graphene oxide acrylic acid; in the epoxy cloud iron intermediate paint, 4-methyl-5- (1-naphthyl) -2-aminothiazole modified graphene oxide is replaced by equivalent graphene oxide; the graphene modified acrylic polyurethane finish paint is prepared by replacing high-hydroxyl acrylic polyurethane resin with aqueous fluorocarbon resin, and the rest components and the corresponding preparation method are the same as those of the example 3.
Test example:
Salt spray test is carried out on the coating sample by adopting a salt spray test box with the model number of YWX/Q-250, and specific sample plate preparation and test steps are carried out on the sample according to GB/T1771-2007 and GB/T9271-2008; acid and alkali resistance test the coatings were subjected to the acid and alkali resistance test according to GB/9274-88, first a sodium hydroxide solution at ph=10 and a hydrochloric acid solution at ph=4 were prepared, the coatings were placed in the solution, observed at intervals, and recorded.
Weather resistance test, the weather resistance test of ultraviolet aging is carried out on the coating by adopting an ultraviolet aging test box with the model number of QBZY-C, the coating is placed in an ultraviolet aging box with ultraviolet radiation (313 nm and 1.25 kw) for continuous irradiation, and the aging degree of the coating is observed and recorded at intervals.
And (3) according to the standard GB/T5210-2006 paint and varnish pulling-off method adhesion test, completing the pulling-off method adhesion test.
All of the above performance tests were performed 7 days after the application of the coating.
Wherein the results of the correlation performance tests of examples 1-3 are shown in Table 1:
Table 1 performance test table
| Group of | Soaking in 10 days ph=10 sodium hydroxide solution | Soaking in hydrochloric acid solution with pH=4 for 10 days | Weather resistance | Adhesion (pull open method) MPa |
| Example 1 | The coating is not foamed, the coating is not cracked, and the substrate is not exposed | The coating is not foamed, the coating is not cracked, and the substrate is not exposed | The artificial accelerated aging resistance is 1500 hours, and the paint film is not foamed, peeled off and pulverized | 9.8 |
| Example 2 | The coating is not foamed, the coating is not cracked, and the substrate is not exposed | The coating is not foamed, the coating is not cracked, and the substrate is not exposed | The artificial accelerated aging resistance is 2000 hours, and the paint film is not foamed, peeled off and pulverized | 10.2 |
| Example 3 | The coating is not foamed, the coating is not cracked, and the substrate is not exposed | The coating is not foamed, the coating is not cracked, and the substrate is not exposed | The artificial accelerated aging resistance is 2500 hours, and the paint film is not foamed, peeled off and pulverized | 13.5 |
Examples 1-3 analysis of performance test results: after being soaked in 10 days of acid-base solution, the coating is not foamed or cracked, and the base material is not exposed, so that the coating has excellent environmental weather resistance by adopting the technical scheme of examples 1-3.
The results of the performance tests related to examples 1 to 3 and comparative example 1 are shown in Table 2;
table 2 results of examples and comparative examples related to performance tests
| Group of | Salt spray resistance (h), 1000h | Salt spray resistance (h), 2000h | Salt spray resistance (h), 3000h | Adhesion (pull open method) MPa |
| Example 1 | The coating has no foaming, no falling and no rust | The coating has no foaming, no falling and no rust | The coating has no foaming, no falling and no rust | 8.8 |
| Example 2 | The coating has no foaming, no falling and no rust | The coating has no foaming, no falling and no rust | The coating has no foaming, no falling and no rust | 10.2 |
| Example 3 | The coating has no foaming, no falling and no rust | The coating has no foaming, no falling and no rust | The coating has no foaming, no falling and no rust | 13.5 |
| Comparative example 1 | The coating has no foaming, no falling and no rust | The coating has no foaming, no falling and no rust | Foaming, cracking and peeling of the coating and bare substrate | 9.6 |
According to the invention, the composite coating can be prepared from the special epoxy zinc-rich antirust primer, the epoxy iron cloud intermediate paint and the graphene modified acrylic polyurethane finish paint by comparing the above examples, so that the corrosion resistance of the whole coating is improved, and the performance of the composite coating finally formed on a bridge steel structural member is far higher than the requirement of a steel beam coating system 6 mentioned in the 1 st part of Q/CR749.1-2020 railway bridge steel structure and component protection coating and paint. Effectively improves the anti-impact, anti-corrosion and weather-proof capabilities of the composite coating.
And from the above test data of adhesion, it can be seen that: example 1 is a paint layer with a paint adhesion of 8.8 MPa with only a special epoxy zinc-rich rust inhibitive primer; example 2 the adhesion of the two paint layers of the special epoxy zinc-rich antirust primer and the epoxy cloud iron intermediate paint is 10.2MPa; example 3 is a composite coating coated with a special epoxy zinc-rich antirust primer, an epoxy cloud iron intermediate paint and a graphene modified acrylic polyurethane finish, and the adhesive force of three paint layers reaches 13.5 MPa.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (4)
1. The modified composite coating for the railway bridge steel structure is characterized by comprising a special epoxy zinc-rich antirust primer layer, an epoxy cloud iron intermediate paint layer and a graphene modified acrylic polyurethane finish paint layer which are sequentially sprayed on the railway bridge steel structure from inside to outside;
The special epoxy zinc-rich antirust primer layer comprises self-repairing microcapsules, and when the pH value of the surface of a bottom steel structure is less than or equal to 6, the self-repairing microcapsules are ruptured to release wrapped functionalized graphene acrylic slurry;
The thickness of the special epoxy zinc-rich antirust primer layer is 80-195 mu m, the thickness of the epoxy cloud iron intermediate paint layer is 200-350 mu m, and the thickness of the graphene modified acrylic polyurethane top paint layer is 65-85 mu m;
75-85 wt% of zinc powder in the epoxy zinc-rich antirust primer, 20-50 wt% of cloud iron powder in the epoxy cloud iron intermediate paint, and 50-70 wt% of high-hydroxyl acrylic polyurethane resin in the graphene modified acrylic polyurethane finish paint;
The preparation of the self-repairing microcapsule specifically comprises the following steps:
s141, dispersing graphene in deionized water, and stirring at a high speed, wherein the high-speed stirring speed is 1200-1500rpm, and the time is 20-35 min;
s142, adding acrylic acid after uniformly dispersing graphene, heating and stirring to prepare functionalized graphene acrylic acid slurry, wherein the stirring speed is 1000-1100rpm, the time is 60-90 min, and the heating temperature is 60-80 ℃;
s143, placing a beaker filled with deionized water on a hot plate, adding an ethylene maleic anhydride copolymer aqueous solution into the beaker, stirring, and simultaneously adding urea, ammonium chloride and resorcinol into the solution to obtain a first mixed solution, wherein the stirring speed is 800-1000rpm, the time is 40-55 min, and the heating temperature is 55-70 ℃;
S144, adding a sodium hydroxide solution to raise the pH value of the first mixed solution to 3.5, adding 1-2 drops of octanol to prevent surface bubbles, slowly adding dicyclopentadiene into the first mixed solution and stabilizing the dicyclopentadiene for 5 minutes, and then adding the functionalized graphene acrylic slurry into the solution and uniformly stirring to obtain a second mixed solution, wherein the stirring speed is 500-700rpm, and the time is 30-45 minutes;
S145, adding formaldehyde and aldosterone buffer solution into the second mixed solution after the second mixed solution is stabilized, and stirring to form urea-formaldehyde microcapsules, wherein the stirring speed is 500-700rpm, the time is 4-6 h, and the temperature is 45-50 ℃;
And S146, cooling the stirred second mixed solution to the ambient temperature, separating the microcapsule from the solution in a vacuum environment, washing with deionized water to remove excessive solvent, and then air-drying the microcapsule to obtain the self-repairing microcapsule wrapping the functionalized graphene acrylic acid slurry, wherein the washing times are 5-7 times, and the air-drying time is 24-48 hours.
2. A method of preparing the modified composite coating for a railway bridge steel structure of claim 1, comprising the steps of:
s100, preparing special epoxy zinc-rich antirust primer;
S200, preparing epoxy cloud iron intermediate paint;
s300, preparing graphene modified acrylic polyurethane finish paint;
S400, spraying the special epoxy zinc-rich antirust primer prepared in the step S100, the epoxy iron cloud intermediate paint prepared in the step S200 and the graphene modified acrylic polyurethane finish prepared in the step S300 on the railway bridge steel structure layer by layer from inside to outside to prepare a modified composite coating for the railway bridge steel structure;
The preparation method of the special epoxy zinc-rich antirust primer comprises the following steps:
S110, stirring and mixing the epoxy resin and the resin diluent uniformly, and respectively adding a dispersing wetting agent, a defoaming agent and a thickening agent to stir and mix uniformly to obtain a resin mixture, wherein the stirring speed is 850-900 rpm, and the stirring time is 20-35 min;
S120, sequentially adding zinc powder, ferrophosphorus powder, an anti-settling agent, glass beads and a thickening agent into the resin mixture, and stirring and uniformly mixing to obtain a film-forming component, wherein the stirring speed is 1300-160 rpm, and the time is 100-115 min; and the adding time interval of the adjacent raw materials is 20min;
S130, stirring and mixing the curing agent and the curing diluent uniformly, and then adding the flash rust inhibitor to stir and mix uniformly to obtain a curing component;
S140, preparing self-repairing microcapsules;
and S150, putting the film forming component, the curing component and the self-repairing microcapsule into a stirring kettle, stirring at a low speed for 20min, adding the defoaming agent and the anti-settling agent, and stirring at a medium speed for 20min to obtain the special epoxy zinc-rich antirust primer.
3. The method for preparing a modified composite coating for a railway bridge steel structure according to claim 2, wherein the preparation of the epoxy cloud iron intermediate paint comprises the following steps:
s210, preparing 4-methyl-5- (1-naphthyl) -2-aminothiazole modified graphene oxide;
S220, adding 4-methyl-5- (1-naphthyl) -2-aminothiazole modified graphene oxide and a dispersing agent into bisphenol A epoxy resin, and fully stirring to obtain a uniformly dispersed modified graphene oxide/bisphenol A epoxy resin compound, wherein the stirring speed is 850-900 rpm, and the time is 55-75 min;
S230, adjusting the stirring rotation speed to 550-600 rpm, sequentially adding a cosolvent, glass phosphorus flakes and mica iron oxide into the modified graphene oxide/bisphenol A epoxy resin compound, stirring for 55-75 min, adding a curing agent, adjusting the stirring rotation speed to 850-900 rpm, and stirring for 65-85 min to obtain the epoxy iron cloud intermediate paint;
The preparation method of the 4-methyl-5- (1-naphthyl) -2-aminothiazole modified graphene oxide comprises the following steps:
S211, placing flaky graphene oxide in an ethanol solvent for ultrasonic dispersion, adding triethylamine serving as a catalyst into the graphene oxide ethanol suspension after the dispersion is completed, and then placing a reaction mixture in an ice bath for storage to obtain a first mixed solvent, wherein the ultrasonic dispersion frequency is 95-120 kHz, the dispersion time is 35-65 min, and the ice bath temperature is 4-1 ℃;
s212, dissolving 4-methyl-5- (1-naphthyl) -2-aminothiazole in an N, N-dimethylformamide solvent, then placing the solution in an ice bath, and keeping the reaction temperature between 0 ℃ and 4 ℃ below zero to obtain a second mixed solvent;
S213, mixing the first mixed solvent and the second mixed solvent to prepare a third mixed solvent, then adding 1-hydroxybenzotriazole and 1-ethyl- (3-dimethylaminopropyl) carbodiimide into the third mixed solvent, continuously stirring for 10-12 hours at room temperature, and filtering after the reaction is completed;
S214, firstly washing the filter material for 2-4 times by using N, N-dimethylformamide, and then washing the filter material for 2-4 times by using deionized water;
And S215, placing the washed reaction product in an oven for drying, wherein the drying temperature is 55-75 ℃, and the drying degree is that the humidity of the reaction product is less than 13%, so that the 4-methyl-5- (1-naphthyl) -2-aminothiazole modified graphene oxide is prepared.
4. The method for preparing a modified composite coating for a railway bridge steel structure according to claim 2, wherein the preparation of the graphene modified acrylic polyurethane finish paint comprises the following steps:
s310, firstly, placing graphene in an ethanol solvent for ultrasonic dispersion, adding triethylamine serving as a catalyst into the graphene ethanol suspension after the dispersion is completed, and then placing a reaction mixture in an ice bath for storage to obtain a first mixed material, wherein the ultrasonic dispersion frequency is 95-120 kHz, the dispersion time is 35-65 min, and the ice bath temperature is 4-1 ℃;
s320, adding the high-hydroxyl acrylic polyurethane resin into the hydroxyl acrylic dispersion, mixing deionized water, a dispersing agent and titanium pigment, uniformly stirring, grinding until the fineness is less than or equal to 25 mu m, adding the mixture into the hydroxyl acrylic dispersion, uniformly stirring, and preparing a second mixed material;
S330, mixing the first mixed material and the second mixed material according to the mass ratio of 1:8, adding a substrate wetting agent, an organosilicon defoamer, a catalyst and a polyurethane association type rheological auxiliary agent, and stirring uniformly again to obtain the graphene modified acrylic polyurethane finish paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410242728.9A CN117866470B (en) | 2024-03-04 | 2024-03-04 | Modified composite coating for railway bridge steel structure and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410242728.9A CN117866470B (en) | 2024-03-04 | 2024-03-04 | Modified composite coating for railway bridge steel structure and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117866470A CN117866470A (en) | 2024-04-12 |
| CN117866470B true CN117866470B (en) | 2024-05-24 |
Family
ID=90584820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410242728.9A Active CN117866470B (en) | 2024-03-04 | 2024-03-04 | Modified composite coating for railway bridge steel structure and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117866470B (en) |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104946114A (en) * | 2015-07-07 | 2015-09-30 | 上海理工大学 | Metal surface anticorrosive coating comprising graphene and preparing method thereof |
| CN105419437A (en) * | 2015-12-24 | 2016-03-23 | 中国科学院海洋研究所 | Supporting anti-corrosive coating modified by graphene, preparation and application thereof |
| CN108587441A (en) * | 2018-03-27 | 2018-09-28 | 华豹（天津）新材料科技发展股份有限公司 | A kind of watersoluble plumbago alkene acroleic acid polyurethane coating and preparation method thereof |
| CN208328675U (en) * | 2018-05-30 | 2019-01-04 | 中国铁路设计集团有限公司 | A kind of heavy-d uty system bridge pad with graphene zinc |
| CN109554064A (en) * | 2017-09-25 | 2019-04-02 | 上海梅山钢铁股份有限公司 | A kind of weather-proof anti-corrosion corrosion-inhibiting coating and preparation method thereof for steel structure surface |
| CN208747989U (en) * | 2018-07-16 | 2019-04-16 | 湖南航天三丰科工有限公司 | A kind of graphene heavy antisepsis composite coating for steel structure bridge coating |
| CN109663549A (en) * | 2018-12-03 | 2019-04-23 | 南京工业大学 | Preparation method of graphene microcapsules |
| CN110577785A (en) * | 2018-06-07 | 2019-12-17 | 山东欧铂新材料有限公司 | Intermediate paint coating of heavy-duty anticorrosive coating, epoxy resin heavy-duty anticorrosive coating, preparation method of epoxy resin heavy-duty anticorrosive coating, and heavy-duty anticorrosive coating |
| CN111518450A (en) * | 2020-06-11 | 2020-08-11 | 金陵科技学院 | Preparation method of graphene oxide/acrylate-epoxy resin composite anticorrosive paint |
| CN211339361U (en) * | 2019-09-06 | 2020-08-25 | 中国铁路设计集团有限公司 | Alkene-zinc-based fluorocarbon super-durable heavy-duty anticorrosive coating system for railway steel bridge |
| CN112812605A (en) * | 2020-12-29 | 2021-05-18 | 有研工程技术研究院有限公司 | Preparation method of graphene modified heavy-duty anticorrosive paint |
| CN113150642A (en) * | 2020-12-30 | 2021-07-23 | 中国特种飞行器研究所 | Anticorrosive coating system for outer wall of tower cylinder of ocean wind turbine generator and coating method |
| CN115304884A (en) * | 2022-08-12 | 2022-11-08 | 哈尔滨工业大学 | Self-healing and damage in-situ recognition epoxy resin composite material and preparation method and application thereof |
| CN115572518A (en) * | 2022-09-26 | 2023-01-06 | 厦门大学 | Water-based concrete protective coating composition and preparation method thereof |
| CN115627094A (en) * | 2022-09-26 | 2023-01-20 | 厦门大学 | Functional anticorrosive filler capable of being stably dispersed in water phase and preparation method and application thereof |
| CN116042053A (en) * | 2022-12-23 | 2023-05-02 | 成都虹润制漆有限公司 | Water-based epoxy primer, water-based polyurethane finish and water-based anticorrosive paint |
| WO2023123580A1 (en) * | 2021-12-28 | 2023-07-06 | 青岛理工大学 | Graphene oxide modified styrene-acrylic pickering emulsion and composite emulsion, and preparation methods therefor and applications thereof |
| CN117467337A (en) * | 2023-12-25 | 2024-01-30 | 成都虹润制漆有限公司 | Heavy anti-corrosion coating matching system for steel structure and preparation method thereof |
-
2024
- 2024-03-04 CN CN202410242728.9A patent/CN117866470B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104946114A (en) * | 2015-07-07 | 2015-09-30 | 上海理工大学 | Metal surface anticorrosive coating comprising graphene and preparing method thereof |
| CN105419437A (en) * | 2015-12-24 | 2016-03-23 | 中国科学院海洋研究所 | Supporting anti-corrosive coating modified by graphene, preparation and application thereof |
| CN109554064A (en) * | 2017-09-25 | 2019-04-02 | 上海梅山钢铁股份有限公司 | A kind of weather-proof anti-corrosion corrosion-inhibiting coating and preparation method thereof for steel structure surface |
| CN108587441A (en) * | 2018-03-27 | 2018-09-28 | 华豹（天津）新材料科技发展股份有限公司 | A kind of watersoluble plumbago alkene acroleic acid polyurethane coating and preparation method thereof |
| CN208328675U (en) * | 2018-05-30 | 2019-01-04 | 中国铁路设计集团有限公司 | A kind of heavy-d uty system bridge pad with graphene zinc |
| CN110577785A (en) * | 2018-06-07 | 2019-12-17 | 山东欧铂新材料有限公司 | Intermediate paint coating of heavy-duty anticorrosive coating, epoxy resin heavy-duty anticorrosive coating, preparation method of epoxy resin heavy-duty anticorrosive coating, and heavy-duty anticorrosive coating |
| CN208747989U (en) * | 2018-07-16 | 2019-04-16 | 湖南航天三丰科工有限公司 | A kind of graphene heavy antisepsis composite coating for steel structure bridge coating |
| CN109663549A (en) * | 2018-12-03 | 2019-04-23 | 南京工业大学 | Preparation method of graphene microcapsules |
| CN211339361U (en) * | 2019-09-06 | 2020-08-25 | 中国铁路设计集团有限公司 | Alkene-zinc-based fluorocarbon super-durable heavy-duty anticorrosive coating system for railway steel bridge |
| CN111518450A (en) * | 2020-06-11 | 2020-08-11 | 金陵科技学院 | Preparation method of graphene oxide/acrylate-epoxy resin composite anticorrosive paint |
| CN112812605A (en) * | 2020-12-29 | 2021-05-18 | 有研工程技术研究院有限公司 | Preparation method of graphene modified heavy-duty anticorrosive paint |
| CN113150642A (en) * | 2020-12-30 | 2021-07-23 | 中国特种飞行器研究所 | Anticorrosive coating system for outer wall of tower cylinder of ocean wind turbine generator and coating method |
| WO2023123580A1 (en) * | 2021-12-28 | 2023-07-06 | 青岛理工大学 | Graphene oxide modified styrene-acrylic pickering emulsion and composite emulsion, and preparation methods therefor and applications thereof |
| CN115304884A (en) * | 2022-08-12 | 2022-11-08 | 哈尔滨工业大学 | Self-healing and damage in-situ recognition epoxy resin composite material and preparation method and application thereof |
| CN115572518A (en) * | 2022-09-26 | 2023-01-06 | 厦门大学 | Water-based concrete protective coating composition and preparation method thereof |
| CN115627094A (en) * | 2022-09-26 | 2023-01-20 | 厦门大学 | Functional anticorrosive filler capable of being stably dispersed in water phase and preparation method and application thereof |
| CN116042053A (en) * | 2022-12-23 | 2023-05-02 | 成都虹润制漆有限公司 | Water-based epoxy primer, water-based polyurethane finish and water-based anticorrosive paint |
| CN117467337A (en) * | 2023-12-25 | 2024-01-30 | 成都虹润制漆有限公司 | Heavy anti-corrosion coating matching system for steel structure and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| Synthesis of graphene oxide-based nanofillers and their influence on the anticorrosion performance of epoxy coating in saline medium;Kamalon Rajitha等;Diamond and Related Materials;20200626;第108卷;第2页2.2部分和结论部分 * |
| 高储热相变微胶囊的制备及其相变流体的性能优构;刘登登;中国优秀硕士学位论文全文数据库工程科技Ⅰ辑;20210915(09);B020-213 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117866470A (en) | 2024-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20150056563A (en) | Anti-corrosive zinc primer coating compositions comprising hollow glass spheres|and a conductive pigment | |
| CN103987799B (en) | Corrosion-resistant, chip resistance and resistance to fuel composition | |
| KR101884222B1 (en) | Corrosion control coating | |
| KR101007507B1 (en) | Anticorrosive coating composition for nonferrous metal and iron construction and method of anticorrosive coating using thereof | |
| CN110358395B (en) | Graphene-based corrosion-resistant coating and preparation method thereof | |
| KR101734082B1 (en) | High functional composition for surface protection of steel structures and method for surface protecting steel structures therewith | |
| KR101779826B1 (en) | Manufacturing method for aqueous ceramic paint for steel bridge painting and steel bridge painting method using the same | |
| CN111500148B (en) | Graphene-modified functional heavy-duty water-based paint for steel, and preparation method and application method thereof | |
| KR101732918B1 (en) | Aqueous paint composition for motor vehicles | |
| CN113861801A (en) | Anti-corrosion coating in oilfield sewage storage tank and preparation method thereof | |
| CN101693801A (en) | Rare earth modification exterior wall water-borne fluorocarbon coating and preparation method thereof | |
| CN108047908A (en) | A kind of steel structure anti-corrosion process | |
| CN114574014B (en) | Water-based inorganic zinc-rich paint easy to construct and preparation method and application thereof | |
| CN110885617A (en) | Rust conversion coating and preparation method thereof | |
| CN104449391A (en) | Iron red anticorrosive paint and preparation method thereof | |
| CN117866470B (en) | Modified composite coating for railway bridge steel structure and preparation method thereof | |
| CN115948067B (en) | Functional filler, self-repairing anticorrosive paint and preparation method | |
| CN112831244A (en) | Color coating paint and preparation method of color coated sheet applying color coating paint | |
| KR101323960B1 (en) | Composition of coating material which have rust prevention performance and vibration damping effect as water based and method for manufacturing the same | |
| US5476890A (en) | Rust converting-and-inhibiting water-thinnable paint primer | |
| KR101146123B1 (en) | Ceramic High-Anticorrosive Primer for Steel | |
| CN117820942B (en) | Bottom, middle and surface composite coating for railway bridge steel structure and preparation method thereof | |
| CN115044286A (en) | Anti-corrosion anti-ultraviolet coating and preparation method thereof | |
| KR20190011558A (en) | Water-repellent coating agent and method for manufacturing the same | |
| CN114735994A (en) | Method for preparing super-hydrophobic polymer waterproof coating from rice hull ash |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |