CN114703448A - Multifunctional composite coating on surface of steel structure and coating process thereof - Google Patents
Multifunctional composite coating on surface of steel structure and coating process thereof Download PDFInfo
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- CN114703448A CN114703448A CN202210150194.8A CN202210150194A CN114703448A CN 114703448 A CN114703448 A CN 114703448A CN 202210150194 A CN202210150194 A CN 202210150194A CN 114703448 A CN114703448 A CN 114703448A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 67
- 239000010959 steel Substances 0.000 title claims abstract description 67
- 238000000576 coating method Methods 0.000 title claims abstract description 36
- 239000011248 coating agent Substances 0.000 title claims abstract description 28
- 239000002131 composite material Substances 0.000 title claims abstract description 22
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000000758 substrate Substances 0.000 claims abstract description 50
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 48
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 32
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 18
- 238000004070 electrodeposition Methods 0.000 claims abstract description 17
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003063 flame retardant Substances 0.000 claims abstract description 16
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003822 epoxy resin Substances 0.000 claims abstract description 14
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920000642 polymer Polymers 0.000 claims abstract description 12
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004202 carbamide Substances 0.000 claims abstract description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 230000002195 synergetic effect Effects 0.000 claims abstract description 8
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 7
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 6
- 239000007864 aqueous solution Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 claims description 10
- 239000012153 distilled water Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000007865 diluting Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 238000001764 infiltration Methods 0.000 claims description 5
- 238000003760 magnetic stirring Methods 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 5
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000010408 film Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- -1 graphite alkene Chemical class 0.000 claims description 3
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 2
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 claims description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 2
- 229920006231 aramid fiber Polymers 0.000 claims description 2
- 239000010425 asbestos Substances 0.000 claims description 2
- 229910052599 brucite Inorganic materials 0.000 claims description 2
- 238000005886 esterification reaction Methods 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 235000021388 linseed oil Nutrition 0.000 claims description 2
- 239000000944 linseed oil Substances 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims description 2
- 229910052895 riebeckite Inorganic materials 0.000 claims description 2
- 239000010409 thin film Substances 0.000 claims description 2
- 229960001124 trientine Drugs 0.000 claims description 2
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 15
- 238000003915 air pollution Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001652 electrophoretic deposition Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
-
- 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
-
- 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
- B05D7/24—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 for applying particular liquids or other fluent materials
-
- 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
- C09D163/10—Epoxy resins modified by unsaturated 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
-
- 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
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Inorganic Chemistry (AREA)
- Laminated Bodies (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a multifunctional composite coating on the surface of a steel structure and a coating method thereof, wherein the coating comprises a multi-component co-permeation substrate, a graphene anticorrosive film and a fireproof outer layer from inside to outside, and the multi-component co-permeation substrate comprises the following components in parts by weight: 50-60 parts of zinc powder, 23-31 parts of aluminum powder, 15-18 parts of urea and 10-12 parts of sodium carbonate, wherein the graphene anticorrosive film comprises two components of powdered graphene oxide and pyrrole, and the fireproof outer layer comprises the following components in parts by weight: 5-10 parts of flame retardant, 1-2 parts of synergistic flame retardant, 2-4 parts of pentaerythritol, 3-5 parts of titanium dioxide, 3-7 parts of reinforcing fiber, 5-10 parts of curing agent, a proper amount of acetone and 40-58 parts of epoxy resin polymer. The invention has the advantages that the combination of corrosion resistance and fire resistance of the outer layer coating of the steel structure is realized by adopting the three-layer structure coating, and the combination between layers is tighter by the methods of multi-component co-permeation and electrochemical deposition.
Description
Technical Field
The invention relates to the technical field of preparation of steel structure external coatings, in particular to a multifunctional composite coating on the surface of a steel structure and a coating process thereof.
Background
The steel structure is used as a form of building structure, has the characteristics of high strength, light weight, good extensibility, good earthquake resistance, short construction period and the like, and is widely applied to the building industry.
Many steel structure buildings are arranged at seaside or under coastal corrosive environment, the moisture content in the atmosphere of coastal areas is much higher than that of inland, especially in southeast coastal areas of China. The region belongs to a high-temperature and high-humidity damp and hot atmosphere environment, seawater evaporation capacity is large, salt content and ion number in the atmosphere are relatively high, a corrosion environment is also worse, in addition, in the regions, heavy industries with low additional value and high pollution are generally developed, air pollution in the region is serious, and SO in the atmosphere2、CO2The content of alkaline oxides is also higher, and the factors can increase the corrosion of steel structures in coastal areas. Meanwhile, the fireproof and heat insulation effect outside the steel structure must be ensured to a certain extent.
Disclosure of Invention
The invention aims to provide a multifunctional composite coating on the surface of a steel structure and a coating process thereof.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides a multi-functional composite coating in steel construction surface which characterized in that, from interior to exterior includes that many units ooze basement, graphite alkene anticorrosive thin film and fire prevention are outer, many units ooze the basement including the component of following part by weight altogether: 50-60 parts of zinc powder, 23-31 parts of aluminum powder, 15-18 parts of urea and 10-12 parts of sodium carbonate, wherein the graphene anticorrosive film comprises two components of powdered graphene oxide and pyrrole, and the fireproof outer layer comprises the following components in parts by weight: 5-10 parts of flame retardant, 1-2 parts of synergistic flame retardant, 2-4 parts of pentaerythritol, 3-5 parts of titanium dioxide, 3-7 parts of reinforcing fiber, 5-10 parts of curing agent, a proper amount of acetone and 40-58 parts of epoxy resin polymer.
Preferably, the purity of the zinc powder and the purity of the aluminum powder are both more than 99%, the particle size of the zinc powder is 5-10 microns, and the particle size of the aluminum powder is 0.3-0.5 micron powder.
Preferably, the concentration of the graphene oxide is 1-2mg/ml, and the volume ratio of the graphene oxide to the pyrrole is 2: 1.
Preferably, the pentaerythritol is ultrafine pentaerythritol, and the particle size D50 of the ultrafine pentaerythritol is 3-5 mm.
Preferably, the flame retardant is one of liquid phosphate ester or liquid chlorinated paraffin.
Preferably, the synergistic flame retardant is one of antimony trioxide, zinc borate or zinc oxide.
Preferably, the reinforcing fiber is one of glass fiber, aramid fiber, aluminum silicate fiber, brucite fiber or asbestos fiber.
Preferably, the curing agent is one of diethylenetriamine, triethylene tetramine and m-xylylenediamine.
Preferably, the epoxy resin polymer is formed by esterification of epoxy resin, linseed oil, zinc oxide and xylene at a high temperature.
The coating process of the multifunctional composite coating on the surface of the steel structure is characterized by comprising the following steps of:
s1, placing the weighed zinc powder, aluminum powder, urea and sodium carbonate into a high-temperature resistant container, uniformly mixing, tightly embedding the steel structure substrate in the container for a plurality of minutes, placing the crucible into a vacuum furnace after the completion, vacuumizing the vacuum furnace to-0.1 MPa, heating to 480-530 ℃, keeping the temperature for 1-2 hours, stopping heating, and cooling to room temperature to complete the multi-component co-infiltration substrate outside the steel structure substrate;
s2, placing powdered graphene oxide in distilled water to be dissolved to form a graphene oxide aqueous solution, diluting the graphene oxide aqueous solution to a concentration of 2mg/ml, adding pyrrole into the graphene oxide aqueous solution, wherein the reaction volume ratio of the graphene oxide aqueous solution to the pyrrole is 2:1, obtaining the graphene oxide pyrrole solution through magnetic stirring, subsequently introducing nitrogen into the graphene oxide pyrrole solution, performing ultrasonic dispersion treatment, placing a saturated calomel electrode, a glass slide and a steel structure substrate completing the multi-element co-permeation substrate in S1 in the treated solution, taking the saturated calomel electrode as a reference electrode, taking a platinum sheet as an auxiliary electrode, taking the steel structure substrate completing the multi-element co-permeation substrate as a working electrode, applying voltage through an electrochemical workstation to realize electrochemical deposition, taking out the steel structure substrate after the electrochemical deposition, and cleaning and drying the steel structure substrate by using distilled water;
s3, weighing the components in the fireproof outer layer except for the acetone and the epoxy resin polymer at one time according to the parts by weight, mixing the components uniformly, putting the mixture into a rotary mixer to mix the mixture for 15 to 20 minutes at the temperature of between 45 and 60 ℃ at the speed of 250 plus one rotation per minute, adding the epoxy resin polymer into the mixture, adding the rest acetone under the stirring action, adjusting the mixture to a certain viscosity, and stopping adding the acetone, namely spraying the outer layer of the steel structure substrate after electrodeposition in S2 by a high-pressure spray gun to obtain the steel structure substrate with the finished surface multifunctional composite coating.
In conclusion, the invention has the following beneficial effects:
1. the invention realizes the combination of corrosion resistance and fire resistance of the outer layer coating of the steel structure by adopting the three-layer structure coating, and the combination between layers is tighter by the methods of multi-component co-permeation and electrochemical deposition.
2. According to the invention, the bottom layer is subjected to a multi-component co-cementation reaction on steel structure metal by aluminum powder, zinc powder and nitrogen element through a multi-component co-cementation substrate process to form a multi-component alloy layer, so that the corrosion resistance of the steel structure bottom layer is greatly improved.
3. According to the invention, the graphene anticorrosive film is deposited on the outer side of the multi-element co-permeation layer by an electrophoretic deposition method, and the graphene anticorrosive film is used for protecting an anticorrosive coating of a steel structure, so that the overall anticorrosive capability is improved, the corrosion current density can be effectively reduced, and the bonding strength is higher.
4. The invention sprays the fireproof outer layer on the outer layer, and the fireproof outer layer not only has excellent flame retardance and non-flame-retarding property, but also has very little smoke generation amount during combustion and can not generate corrosive gas.
Detailed Description
The following further describes the embodiments of the present invention, which are not to be construed as limiting the invention.
Example 1
S1, weighing 50 parts of zinc powder, 26 parts of aluminum powder, 15 parts of urea and 11 parts of sodium carbonate, placing the mixture in a high-temperature resistant container, uniformly mixing, tightly embedding the steel structure substrate in the container for a plurality of minutes, placing the crucible in a vacuum furnace after the mixture is finished, vacuumizing the vacuum furnace to-0.1 MPa, heating to 490 ℃, keeping the temperature for 1 hour, stopping heating, and cooling to room temperature to obtain the multi-element co-infiltration substrate outside the steel structure substrate.
S2, placing powdered graphene oxide in distilled water to be dissolved to form a graphene oxide aqueous solution, diluting the graphene oxide aqueous solution to a concentration of 2mg/ml, adding pyrrole into the graphene oxide aqueous solution, enabling the reaction volume ratio of the graphene oxide aqueous solution to the pyrrole to be 2:1, obtaining the graphene oxide pyrrole solution through magnetic stirring, subsequently introducing nitrogen into the graphene oxide pyrrole solution, performing ultrasonic dispersion treatment, placing a saturated calomel electrode, a glass slide and a steel structure base material completing the multi-element co-permeation substrate in the S1 in the treated solution, enabling the saturated calomel electrode to serve as a reference electrode, enabling a platinum sheet to serve as an auxiliary electrode, enabling the steel structure base material completing the multi-element co-permeation substrate to serve as a working electrode, applying voltage through an electrochemical workstation to achieve electrochemical deposition, taking out the steel structure base material after the electrochemical deposition, and cleaning and drying the steel structure base material through distilled water.
S3, weighing 8 parts of flame retardant, 1 part of synergistic flame retardant, 3 parts of pentaerythritol, 4 parts of titanium dioxide, 5 parts of reinforcing fiber and 7 parts of curing agent at one time according to parts by weight, mixing the materials uniformly and then putting the materials into a rotary mixer for 18 minutes at the temperature of 50 ℃ at 280 rpm, adding 52 parts of epoxy resin polymer into the mixed materials, adding the rest acetone under the stirring action, stopping adding the acetone after adjusting to a certain viscosity, and spraying the outer layer of the steel structure substrate subjected to electrodeposition in S2 by a high-pressure spray gun to obtain the steel structure substrate with the finished surface multifunctional composite coating.
Example 2
S1, weighing 55 parts of zinc powder, 30 parts of aluminum powder, 17 parts of urea and 12 parts of sodium carbonate, placing the zinc powder, the aluminum powder, the urea and the sodium carbonate into a high-temperature-resistant container, uniformly mixing, tightly embedding the steel structure substrate into the container for a plurality of minutes, placing the crucible into a vacuum furnace after the completion, vacuumizing the vacuum furnace to-0.1 MPa, heating to 490 ℃, keeping the temperature for 1 hour, stopping heating, and cooling to room temperature to complete the multi-element co-infiltration substrate outside the steel structure substrate.
S2, placing powdered graphene oxide in distilled water to be dissolved to form a graphene oxide aqueous solution, diluting the graphene oxide aqueous solution to a concentration of 2mg/ml, adding pyrrole into the graphene oxide aqueous solution, wherein the reaction volume ratio of the graphene oxide aqueous solution to the pyrrole is 2:1, obtaining the graphene oxide pyrrole solution through magnetic stirring, subsequently introducing nitrogen into the graphene oxide pyrrole solution, performing ultrasonic dispersion treatment, placing a saturated calomel electrode, a glass slide and a steel structure substrate completing the multi-element co-permeation substrate in S1 in the treated solution, taking the saturated calomel electrode as a reference electrode, taking a platinum sheet as an auxiliary electrode, taking the steel structure substrate completing the multi-element co-permeation substrate as a working electrode, applying voltage through an electrochemical workstation to realize electrochemical deposition, taking out the steel structure substrate after the electrochemical deposition, and cleaning and drying the steel structure substrate by using distilled water;
s3, weighing 10 parts of flame retardant, 2 parts of synergistic flame retardant, 4 parts of pentaerythritol, 5 parts of titanium dioxide, 3 parts of reinforcing fiber and 10 parts of curing agent at one time according to parts by weight, mixing the materials uniformly, putting the mixture into a rotary mixer, mixing the materials at 55 ℃ at 300 rpm for 20 minutes, adding 55 parts of epoxy resin polymer into the mixed materials, adding the rest acetone under the stirring action, stopping adding the acetone after adjusting the acetone to a certain viscosity, and spraying the outer layer of the steel structure substrate subjected to electrodeposition in S2 by a high-pressure spray gun to obtain the steel structure substrate with the finished surface multifunctional composite coating.
Example 3
S1, weighing 58 parts of zinc powder, 30 parts of aluminum powder, 18 parts of urea and 10 parts of sodium carbonate, placing the mixture in a high-temperature resistant container, uniformly mixing, tightly embedding the steel structure substrate in the container for a plurality of minutes, placing the crucible in a vacuum furnace after the mixture is finished, vacuumizing the vacuum furnace to-0.1 MPa, heating to 520 ℃, keeping the temperature for 2 hours, stopping heating, and cooling to room temperature to obtain the multi-element co-infiltration substrate outside the steel structure substrate.
S2, placing powdered graphene oxide in distilled water to be dissolved to form a graphene oxide aqueous solution, diluting the graphene oxide aqueous solution to a concentration of 2mg/ml, adding pyrrole into the graphene oxide aqueous solution, enabling the reaction volume ratio of the graphene oxide aqueous solution to the pyrrole to be 2:1, obtaining the graphene oxide pyrrole solution through magnetic stirring, subsequently introducing nitrogen into the graphene oxide pyrrole solution, performing ultrasonic dispersion treatment, placing a saturated calomel electrode, a glass slide and a steel structure base material completing the multi-element co-permeation substrate in the S1 in the treated solution, enabling the saturated calomel electrode to serve as a reference electrode, enabling a platinum sheet to serve as an auxiliary electrode, enabling the steel structure base material completing the multi-element co-permeation substrate to serve as a working electrode, applying voltage through an electrochemical workstation to achieve electrochemical deposition, taking out the steel structure base material after the electrochemical deposition, and cleaning and drying the steel structure base material through distilled water.
S3, weighing 6 parts of flame retardant, 2 parts of synergistic flame retardant, 2 parts of pentaerythritol, 5 parts of titanium dioxide, 7 parts of reinforcing fiber and 10 parts of curing agent by weight at one time, mixing the materials uniformly, putting the mixture into a rotary mixer for 18 minutes at 50 ℃ at 280 rpm, adding 49 parts of epoxy resin polymer into the mixture, adding the rest acetone under the stirring action, stopping adding the acetone after the viscosity is adjusted to a certain value, and spraying the outer layer of the steel structure substrate subjected to electrodeposition in S2 by a high-pressure spray gun to obtain the steel structure substrate coated with the multifunctional composite coating on the surface.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a multi-functional composite coating in steel construction surface which characterized in that, from interior to exterior includes that many units ooze basement, graphite alkene anticorrosive thin film and fire prevention are outer, many units ooze the basement including the component of following part by weight altogether: 50-60 parts of zinc powder, 23-31 parts of aluminum powder, 15-18 parts of urea and 10-12 parts of sodium carbonate, wherein the graphene anticorrosive film comprises two components of powdered graphene oxide and pyrrole, and the fireproof outer layer comprises the following components in parts by weight: 5-10 parts of flame retardant, 1-2 parts of synergistic flame retardant, 2-4 parts of pentaerythritol, 3-5 parts of titanium dioxide, 3-7 parts of reinforcing fiber, 5-10 parts of curing agent, a proper amount of acetone and 40-58 parts of epoxy resin polymer.
2. The multifunctional composite coating for the surface of the steel structure as claimed in claim 1, wherein: the purity of the zinc powder and the aluminum powder is more than 99 percent, the particle size of the zinc powder is 5-10 microns, and the particle size of the aluminum powder is 0.3-0.5 micron powder.
3. The multifunctional composite coating for the surface of the steel structure as claimed in claim 1, wherein: the concentration of the graphene oxide is 1-2mg/ml, and the volume ratio of the graphene oxide to the pyrrole is 2: 1.
4. The multifunctional composite coating for the surface of the steel structure as claimed in claim 1, wherein: the pentaerythritol is superfine pentaerythritol, and the particle size D50 value of the superfine pentaerythritol is 3-5 mm.
5. The multifunctional composite coating for the surface of the steel structure as claimed in claim 1, wherein: the flame retardant is one of liquid phosphate or liquid chlorinated paraffin.
6. The multifunctional composite coating for the surface of the steel structure as claimed in claim 1, wherein: the synergistic flame retardant is one of antimony trioxide, zinc borate or zinc oxide.
7. The multifunctional composite coating for the surface of the steel structure as claimed in claim 1, wherein: the reinforced fiber is one of glass fiber, aramid fiber, aluminum silicate fiber, brucite fiber or asbestos fiber.
8. The multifunctional composite coating for the surface of the steel structure as claimed in claim 1, wherein: the curing agent is one of diethylenetriamine, triethylene tetramine and m-xylylenediamine.
9. The multifunctional composite coating for the surface of the steel structure as claimed in claim 1, wherein: the epoxy resin polymer is formed by performing high-temperature esterification reaction on epoxy resin, linseed oil, zinc oxide and xylene.
10. The coating process of the multifunctional composite coating on the surface of the steel structure is characterized by comprising the following steps of:
s1, placing the weighed zinc powder, aluminum powder, urea and sodium carbonate into a high-temperature resistant container, uniformly mixing, tightly embedding the steel structure substrate in the container for a plurality of minutes, placing the crucible into a vacuum furnace after the completion, vacuumizing the vacuum furnace to-0.1 MPa, heating to 480-530 ℃, keeping the temperature for 1-2 hours, stopping heating, and cooling to room temperature to complete the multi-component co-infiltration substrate outside the steel structure substrate;
s2, dissolving powdered graphene oxide in distilled water to form a graphene oxide aqueous solution, diluting the graphene oxide aqueous solution to a concentration of 2mg/ml, adding pyrrole into the graphene oxide aqueous solution, wherein the reaction volume ratio of the graphene oxide aqueous solution to the pyrrole is 2:1, obtaining a graphene oxide pyrrole solution through magnetic stirring, subsequently introducing nitrogen into the graphene oxide pyrrole solution, performing ultrasonic dispersion treatment, placing a saturated calomel electrode, a glass slide and a steel structure substrate which completes multi-element co-permeation of the substrate in S1 in the treated solution, taking the saturated calomel electrode as a reference electrode, a platinum sheet as an auxiliary electrode, taking the steel structure substrate which completes multi-element co-permeation of the substrate as a working electrode, applying voltage through an electrochemical workstation to realize electrochemical deposition, taking out the steel structure substrate which completes the electrochemical deposition, and cleaning and drying the steel structure substrate by distilled water;
s3, weighing the components in the fireproof outer layer except for the acetone and the epoxy resin polymer at one time according to the parts by weight, mixing the components uniformly, putting the mixture into a rotary mixer to mix the mixture for 15 to 20 minutes at the temperature of between 45 and 60 ℃ at the speed of 250 plus one rotation per minute, adding the epoxy resin polymer into the mixture, adding the rest acetone under the stirring action, adjusting the mixture to a certain viscosity, and stopping adding the acetone, namely spraying the outer layer of the steel structure substrate after electrodeposition in S2 by a high-pressure spray gun to obtain the steel structure substrate with the finished surface multifunctional composite coating.
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