CN116213227B - Preparation method of corrosion-resistant erosion-resistant multifunctional coating - Google Patents
Preparation method of corrosion-resistant erosion-resistant multifunctional coating Download PDFInfo
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- CN116213227B CN116213227B CN202310168239.9A CN202310168239A CN116213227B CN 116213227 B CN116213227 B CN 116213227B CN 202310168239 A CN202310168239 A CN 202310168239A CN 116213227 B CN116213227 B CN 116213227B
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/78—Compounds containing aluminium and two or more other elements, with the exception of oxygen and hydrogen
- C01F7/784—Layered double hydroxide, e.g. comprising nitrate, sulfate or carbonate ions as intercalating anions
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- 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
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/002—Processes for applying liquids or other fluent materials the substrate being rotated
- B05D1/005—Spin coating
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- 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
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
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- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- 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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/006—Compounds containing, besides zinc, two ore more other elements, with the exception of oxygen or hydrogen
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- 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
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- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- 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
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- 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
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- 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
- B05D2252/00—Sheets
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- 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
- B05D2503/00—Polyurethanes
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- 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
- B05D2504/00—Epoxy polymers
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- 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
- B05D2518/00—Other type of polymers
- B05D2518/10—Silicon-containing polymers
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/20—Two-dimensional structures
- C01P2002/22—Two-dimensional structures layered hydroxide-type, e.g. of the hydrotalcite-type
Abstract
The invention discloses a preparation method of an anti-corrosion erosion-resistant multifunctional coating, which comprises the following steps: (1) Adding biological buffer salt into an aqueous solution containing a two-dimensional porous material, stirring, and drying to obtain a modified two-dimensional porous material; (2) Adding a nitrate radical substrate solution and a modified two-dimensional porous material into a corrosion inhibitor solution for reaction, centrifuging and drying the obtained suspension to obtain a double-layer hydroxide intercalation; (3) Polishing the steel sheet matrix by using sand paper, then carrying out ultrasonic cleaning and drying for later use; (4) Selecting a buffer coating and a curing agent, using a spin coater to spin coat on a steel sheet substrate, and heating to obtain an unconsolidated buffer layer; (5) And spraying the double-layer hydroxide intercalation onto an unconsolidated buffer layer, then placing the buffer layer in an oven, and performing gravity pressing by using a hot pressing method to prepare the corrosion-resistant erosion-resistant multifunctional coating. The coating prepared by the invention has the functions of superhydrophobicity, scouring resistance, corrosion resistance and the like, and can effectively improve the service life of the pipeline.
Description
Technical Field
The invention relates to the field of corrosion prevention of oil and gas transportation pipelines, in particular to a preparation method of a corrosion-resistant erosion-resistant multifunctional coating.
Background
In the oil gas transportation and production process, the problem of pipeline failure caused by scouring corrosion seriously affects the production safety of oil gas transportation. The excellent properties of superhydrophobic materials are widely used in oil and gas transportation pipelines in terms of corrosion protection, but are limited in corrosion resistance against erosion of particles in multiphase flow pipelines.
In addition, conventional coatings can only provide passive physical barrier protection to metals, and can produce micro-pores and defects during curing due to solvent evaporation, such that the coatings cannot provide long-term protection. At present, two-dimensional (2D) materials such as graphene oxide, glass flakes, hexagonal boron nitride and the like are doped into a polymer matrix, so that the method is a promising anti-corrosion measure. However, due to the low dispersibility of the 2D material, the integrity of the coating is still easy to break, the durability of the coating is affected, and the protection effect is reduced.
Disclosure of Invention
Based on the technical problems, the invention provides a preparation method of an anti-corrosion and erosion-resistant multifunctional coating, and the anti-corrosion and erosion-resistant multifunctional coating prepared by the method can effectively solve the erosion corrosion problem of corrosive fluid in a multiphase flow pipeline on the pipeline.
The technical scheme adopted by the invention is as follows:
a preparation method of an anti-corrosion and erosion-resistant multifunctional coating comprises the following steps:
(1) Preparation of modified two-dimensional porous Material
Adding the two-dimensional porous material into deionized water to prepare an aqueous solution containing the two-dimensional porous material;
adding biological buffer salt into an aqueous solution containing a two-dimensional porous material, stirring, and then drying to obtain a modified two-dimensional porous material;
(2) Preparation of double hydroxide intercalation
Preparing a substrate solution by adopting nitrate and deionized water;
dissolving a corrosion inhibitor in deionized water to prepare a corrosion inhibitor solution;
adding a substrate solution and the modified two-dimensional porous material prepared in the step (1) into a corrosion inhibitor solution for reaction, centrifuging and drying the obtained suspension to obtain a double-layer hydroxide intercalation;
(3) Pretreatment of steel sheet matrix
Polishing the steel sheet substrate by using sand paper, then performing ultrasonic cleaning, and then performing ultrasonic cleaning on the steel sheet substrate in N 2 Drying in atmosphere for standby;
(4) Preparation of buffer layer
Selecting a buffer coating and a curing agent, using a spin coater to spin coat on a steel sheet substrate, and heating to obtain an unconsolidated buffer layer;
(5) Assembled coating
Spraying the double-layer hydroxide intercalation obtained in the step (2) onto the unconsolidated buffer layer obtained in the step (4), then placing the buffer layer in an oven, and performing gravity pressing by using a hot pressing method to prepare the corrosion-resistant erosion-resistant multifunctional coating.
Preferably, in step (1): the two-dimensional porous material is basalt flake, hexagonal boron nitride or graphene oxide; the concentration of the aqueous solution containing the two-dimensional porous material is 0.2-0.3g/ml;
the biological buffer salt is tris (hydroxymethyl) aminomethane hydrochloride, 3-morpholinopropionsulfonate or N-tris (hydroxymethyl) methylglycinate; controlling the stirring temperature to be 25-30 ℃, the stirring rotating speed to be 400-500r/min, and the stirring time to be 20-24h; the drying temperature is controlled to be 80-90 ℃.
More preferably, in step (1): adding dopamine into the aqueous solution containing the two-dimensional porous material at the same time when adding the biological buffer salt; the dosage ratio of the dopamine to the two-dimensional porous material is 0.2-0.3:0.1-2.
Preferably, in step (2): the nitrate is selected from one or more of aluminum nitrate, calcium nitrate, zinc nitrate, magnesium nitrate and sodium nitrate; adding nitrate into deionized water, and then introducing N 2 And regulating the pH value to 11-13 by using NaOH solution to obtain a substrate solution.
More preferably, firstly mixing magnesium nitrate, calcium nitrate or zinc nitrate with aluminum nitrate, and adding deionized water to obtain solution A; then, sodium nitrate is dissolved in deionized water to obtain solution B; adding the solution B into a three-neck flask, and then introducing N 2 Dropwise adding the solution A while stirring, controlling the reaction temperature to 90 ℃ after the dropwise adding, and regulating the pH of the mixed solution to 12 by using a 1mol/L NaOH solution to obtain a substrate solution.
Preferably, in step (2): the corrosion inhibitor is selected from molybdate, vanadate and tungstate; the concentration of the corrosion inhibitor solution is 10-50mg/L.
Preferably, in step (2): adding a substrate solution and the modified two-dimensional porous material prepared in the step (1) into a corrosion inhibitor solution, and stirring and reacting at 60-80 ℃ for 20-24 hours; transferring the mixture into a hydrothermal reaction kettle, carrying out hydrothermal reaction for 4 hours at the temperature of 126-140 ℃, centrifuging the suspension after the reaction, washing the suspension with absolute ethyl alcohol, drying the suspension in an oven, and grinding the suspension into powder by using a mortar to obtain the double-layer hydroxide intercalation.
Preferably, in step (3): the steel sheet matrix is any one of X65 steel, X70 steel and L316 steel; the sand paper adopts 280, 360, 600, 800, 1000 mesh SiC sand paper; petroleum ether and absolute ethyl alcohol are sequentially used during ultrasonic cleaning.
Preferably, in step (4): the buffer coating is made of polydimethylsiloxane, polyurethane or epoxy resin; the curing agent is selected from vinyl triamine, diaminodiphenyl methane or adipic acid dihydrazide;
the mass ratio of the curing agent to the buffer coating is 30:1;
the heating temperature is 60 ℃ and the heating time is 2h.
Preferably, in step (5), the spraying parameters are controlled as follows: the air pressure is 0.2MPa-0.8MPa, the spray gun height is 15cm-25cm, and the atomization value is 0.5-0.8 circle;
the gravity pressing process by adopting the hot pressing method comprises the following steps: controlling the temperature of the oven to 120 ℃, firstly pressing the oven for 2 hours under the gravity of 25KPa by using weights, and then curing the oven for 24 hours at normal temperature.
In the step (5), during spraying, the bilayer hydroxide intercalation powder obtained in the step (2) needs to be further mixed with a continuous phase solvent such as epoxy resin according to a mass ratio of 1:10-1:30, so as to obtain a solution to be sprayed. And (3) spraying the solution to be sprayed onto the unconsolidated buffer layer in the step (4) by adopting a spray gun according to the setting of the spraying parameters, and assembling.
The beneficial technical effects of the invention are as follows:
(1) According to the invention, a two-dimensional porous material is used for preparing double-layer hydroxide intercalation (LDH), the double-layer hydroxide intercalation (LDH) is used as a nano material container for loading a corrosion inhibitor, and biological buffer salt and dopamine are also used for modifying the two-dimensional porous material such as basalt flakes and the like when the double-layer hydroxide intercalation is prepared, and the modified two-dimensional porous material surface contains rich catechol groups and has a tendency of chelating metal ions. In addition, the two-dimensional porous material is provided with growth double hydroxide active sites through modification, the restriction of the active sites on the growth of LDH prevents stacking of LDH sheets, and agglomeration among LDHs is effectively avoided. The LDH prepared by the invention has the advantages of excellent controllability, low manufacturing cost and the like.
(2) The LDH growing on the surface of the two-dimensional porous material contains abundant hydroxyl groups, enhances the affinity of the composite material and buffer paint such as epoxy resin and the like, and is beneficial to playing the physical shielding function of the two-dimensional porous material.
(3) The synergistic effect of chloride ion capturing and corrosion inhibitor releasing of double-layer hydroxide intercalation in the invention ensures that the coating has positive protective performance, and effectively inhibits corrosion reaction of the coating/metal interface. In practical application, the double-layer hydroxide intercalation has excellent barrier, chloride ion capturing and corrosion self-repairing functions, when the coating is washed by solid particles, the double-layer hydroxide between the intercalation can disperse pressure to repair damaged parts, corrosion inhibitor molecules in the intercalation can release and capture chloride ions in corrosion fluid when the coating is damaged, and in addition, due to the existence of the buffer layer, the impact pressure protection material born by the material can be effectively lightened.
(4) According to the invention, the protective layer (buffer layer) with controllable thickness capable of relieving impact pressure of solid particles in the pipeline is added on the surface of the metal substrate in a spin coating mode, so that the coating has excellent erosion resistance.
(5) The multifunctional coating of the invention firstly introduces active sites by modifying a two-dimensional porous material, then grows double-layer hydroxide on the surface of the two-dimensional porous material in situ, and then adds corrosion inhibitor filler to be uniformly mixed, so that corrosion inhibitor molecules grow on double-layer hydroxide intercalation in situ by a hydrothermal method; and further compounding with a buffer layer, and assembling by a hot pressing method to prepare the corrosion-resistant and erosion-resistant multifunctional coating. The invention improves the interface compatibility of the corrosion inhibitor filler and the buffer layer, and simultaneously ensures that the corrosion prevention system has an intelligent chloride ion capturing function and anti-scour corrosion characteristic. The invention constructs an anti-corrosion and erosion-resistant multifunctional coating which contains a buffer structure and takes a corrosion inhibitor as a filler on the surface of a steel substrate, and the coating has the functions of super-hydrophobicity, anti-erosion and anti-corrosion, can effectively solve the erosion and corrosion problem of corrosive fluid in a multiphase flow pipeline on the pipeline, and improves the service life of the pipeline. The multifunctional coating has wide application prospect in the field of scour corrosion protection.
Drawings
FIG. 1 is a schematic diagram of a corrosion-resistant and erosion-resistant multifunctional coating prepared by the method;
FIG. 2 shows the polarization curve of a corrosion-resistant erosion-resistant multifunctional coating made in accordance with the present invention;
FIG. 3 shows the electrochemical impedance spectrum of a corrosion-resistant erosion-resistant multifunctional coating made in accordance with the present invention;
FIG. 4 shows the wettability detection evaluation of an anti-corrosion erosion-resistant multifunctional coating prepared by the invention;
FIG. 5 shows the effect of 1000 cycles of abrasion resistance test on coating wettability of an anti-corrosive erosion-resistant multifunctional coating made in accordance with the present invention;
FIG. 6 shows the erosion rate obtained in an erosion loop test for an erosion resistant multifunctional coating made in accordance with the present invention.
Detailed Description
The invention provides a preparation method of an anti-corrosion erosion-resistant multifunctional coating, which mainly comprises the following steps: mixing a two-dimensional porous material and double-layer hydroxide according to a certain proportion to obtain double-layer hydroxide intercalation, and regulating corrosion inhibitors with different types and concentrations to grow in situ on the double-layer hydroxide intercalation; and adjusting spin coating parameters to prepare a buffer layer on the surface of the steel matrix, and then assembling double-layer hydroxide intercalation to prepare the corrosion-resistant and erosion-resistant multifunctional coating. The invention has superhydrophobicity, impact resistance, wear resistance and durability in pipelines. In practical application, the double-layer hydroxide intercalation has excellent barrier, chloride ion capturing and corrosion self-repairing functions, when the coating is washed by solid particles, the double-layer hydroxide between the intercalation can disperse pressure to repair damaged parts, corrosion inhibitor molecules in the intercalation can release and capture chloride ions in corrosion fluid when the coating is damaged, and in addition, due to the existence of the buffer layer, the impact pressure born by the material can be effectively reduced, and the material is protected. The invention has wide application prospect in the field of scour corrosion protection.
The present invention will be described in detail with reference to specific examples.
Example 1
Step 1: modified basalt flake
First, 0.2g of dopamine and 0.24g of tris (hydroxymethyl) aminomethane hydrochloride were added to 200mL of an aqueous solution having 0.4g of basalt flakes, followed by stirring at a fixed speed of 500r/min for 24 hours. Finally, drying at 80 ℃ to obtain basalt polydopamine (BTS@PDA) particles.
Step 2: preparation of double hydroxide intercalation
0.02mol of Mg (NO 3 ) 2 And 0.01mol of Al (NO) 3 ) 3 Mixing, adding 100mL of deionized water to obtain solution A, and then adding 0.015mol of NaNO 3 Solution B was obtained by dissolving in 100mL deionized water. Adding the solution B into a three-neck flask, and then introducing the solution B into the three-neck flask for a period of time N 2 And (3) dropwise adding the solution A while stirring, controlling the reaction temperature of the system to 90 ℃ after the dropwise adding, and regulating the pH of the system to about 12 by using a 1mol/L NaOH solution to obtain the AB mixed solution. Taking 13g of AB mixed solution, 0.4g of BTS@PDA particles prepared in step 1, adding 100mL of Na with concentration of 50mg/L 2 MoO 4 The solution was stirred at 60℃for 24h and then transferred to a hydrothermal reaction vessel. The reaction was hydrothermal at 126℃for 4h. The reacted suspension was centrifuged at 4000r/min, washed 3 times with absolute ethanol, dried in an oven at 60 c, and ground into powder using a mortar to obtain a double hydroxide intercalation.
Step 3: pretreatment of steel sheet matrix
Sequentially polishing X65 steel with 280, 360, 600, 800 and 1000 mesh SiC sand paper, ultrasonic treating with petroleum ether and absolute ethyl alcohol, cleaning, and treating with N 2 Drying in atmosphere for use.
Step 4: buffer layer preparation
Vinyltriamine (DETA) and Polydimethylsiloxane (PDMS) were spin coated on the X65 steel sheet substrate in step 3 using a spin coater at a mass ratio of 30:1, and heated at 60 ℃ for 2 hours to give an unconsolidated buffer layer.
Step 5: assembly of coatings
And (3) mixing the powder in the step (2) with the continuous phase epoxy resin according to the mass ratio of 1:10 to obtain the solution to be sprayed.
Spraying the solution to be sprayed on the unconsolidated buffer layer in the step 4 by using a spray gun, regulating the air pressure to be 0.6MPa, the oil output to be 1.0 circle, the spray gun height to be 25cm and the atomization value to be 0.5 circle, then placing the sample in a baking oven at 120 ℃, using a 2000g weight, pressing for 2 hours under the gravity of 25KPa, and then curing for 24 hours at normal temperature to prepare the anti-corrosion and erosion-resistant coating based on triple functions.
Example 2
Step 1: modified hexagonal boron nitride
First, 0.24g of 3-morpholinopropanesulfonate was added to 200mL of an aqueous solution having 0.5g of hexagonal boron nitride, followed by stirring at a fixed speed of 500r/min for 24 hours. Finally, drying at 80 ℃ to obtain modified hexagonal boron nitride particles (HBN).
Step 2: preparation of double hydroxide intercalation
0.02mol of Ca (NO 3 ) 2 And 0.01mol of Al (NO) 3 ) 3 Mixing, adding 100mL of deionized water to obtain solution A, and then adding 0.015mol of NaNO 3 Solution B was obtained by dissolving in 100mL deionized water. Adding the solution B into a three-neck flask, and then introducing the solution B into the three-neck flask for a period of time N 2 And (3) dropwise adding the solution A while stirring, controlling the reaction temperature of the system to 90 ℃ after the dropwise adding, and regulating the pH of the system to about 12 by using a 1mol/L NaOH solution to obtain the AB mixed solution. Taking 13g of AB mixed solution, 0.4g of HBN particles prepared in the step 1, adding 100mL of Na with the concentration of 50mg/L 2 WO 4 The solution is stirred and reacted for 24 hours at constant temperature and then transferred into a hydrothermal reaction kettle. The reaction was hydrothermal at 126℃for 4h. The reacted suspension was centrifuged at 4000r/min, washed 3 times with absolute ethanol, dried in an oven at 60 c, and ground into powder using a mortar to obtain a double hydroxide intercalation.
Step 3: pretreatment of steel sheet matrix
Sequentially polishing X70 steel with 280, 360, 600, 800, 1000 mesh SiC sand paper, ultrasonic treating with petroleum ether and absolute ethyl alcohol, cleaning, and treating with N 2 Drying in atmosphere for use.
Step 4: preparation of buffer layer
Adipic Acid Dihydrazide (ADH) and Polyurethane (PU) were spin-coated on the X70 steel sheet substrate in step 3 using a spin coater at a mass ratio of 30:1, and heated at 60℃for 2 hours.
Step 5: assembly of coatings
Spraying the powder in the step 2 on the unconsolidated buffer layer in the step 4 by using a spray gun, regulating the air pressure to be 0.6MPa, the oil output to be 1.0 circle, the spray gun height to be 25cm and the atomization value to be 0.5 circle, then placing the sample in a baking oven at 120 ℃, using a 2000g weight, pressing for 2 hours under the gravity of 25KPa, and curing for 24 hours at normal temperature to obtain the anti-corrosion and erosion-resistant multifunctional coating.
Example 3
Step 1: modified graphene oxide
First, 0.24g of N-tris (hydroxymethyl) methylglycinate was added to 200mL of an aqueous solution having 0.6g of graphene oxide, followed by stirring at a fixed speed of 500r/min for 24 hours. Finally, drying at 80 ℃ to obtain modified graphene oxide powder (GO).
Step 2: preparation of double hydroxide intercalation
0.02mol of Zn (NO) 3 ) 2 And 0.01mol of Al (NO) 3 ) 3 Mixing, adding 100mL of deionized water to obtain solution A, and then adding 0.015mol of NaNO 3 Solution B was obtained by dissolving in 100mL deionized water. Adding the solution B into a three-neck flask, and then introducing the solution B into the three-neck flask for a period of time N 2 And (3) dropwise adding the solution A while stirring, controlling the reaction temperature of the system to 90 ℃ after the dropwise adding, and regulating the pH of the system to about 12 by using a 1mol/L NaOH solution to obtain the AB mixed solution. Taking 13g of AB mixed solution, 0.4g of modified Graphene Oxide (GO) particles in the step 1, and adding 100mL of Na with the concentration of 50mg/L 3 VO 4 The solution is stirred and reacted for 24 hours at constant temperature and then transferred into a hydrothermal reaction kettle. The reaction was hydrothermal at 126℃for 4h. The reacted suspension was centrifuged at 4000r/min, washed 3 times with absolute ethanol, dried in an oven at 60 c, and ground into powder using a mortar to obtain a double hydroxide intercalation.
Step 3: pretreatment of steel sheet matrix
Sequentially polishing L316 steel with 280, 360, 600, 800, 1000 mesh SiC sand paper, ultrasonic treating with petroleum ether and absolute ethanol, cleaning, and treating with N 2 Drying in atmosphere for use.
Step 4: buffer layer preparation
Diaminodiphenylmethane (DDM) was spin coated onto the L316 steel sheet substrate in step 3 using a spin coater at a mass ratio of 30:1 to epoxy resin (EP), and heated at 60℃for 2 hours.
Step 5: assembly of coatings
Spraying the powder in the step 2 on the unconsolidated buffer layer in the step 4 by using a spray gun, regulating the air pressure to be 0.6MPa, the oil output to be 1.0 circle, the spray gun height to be 25cm and the atomization value to be 0.5 circle, then placing the sample in a baking oven at 120 ℃, using a 2000g weight, pressing under the gravity of 25KPa for 2 hours, and solidifying for 24 hours at normal temperature to obtain the anti-corrosion and anti-erosion multifunctional coating.
Example 4
Step 1: modification of basalt flakes
First, 0.2g of dopamine and 0.24g of tris (hydroxymethyl) aminomethane hydrochloride were added to 200mL of an aqueous solution having 0.4g of basalt flakes, followed by stirring at a fixed speed of 500r/min for 24 hours. Finally, drying at 80 ℃ to obtain basalt polydopamine (BTS@PDA) particles.
Step 2: preparation of double hydroxide intercalation
0.02mol of Ca (NO 3 ) 2 And 0.01mol of Al (NO) 3 ) 3 Mixing, adding 100mL of deionized water to obtain solution A, and then adding 0.015mol of NaNO 3 Solution B was obtained by dissolving in 100mL deionized water. Adding the solution B into a three-neck flask, and then introducing the solution B into the three-neck flask for a period of time N 2 While stirring, dropwise adding the solution A, controlling the reaction temperature of the system to 90 ℃ after the dropwise adding, and adjusting the pH of the system to about 12 by using 1mol/L NaOH solution. 13g of AB mixed solution, 0.4g of BTS@PDA particles in step 1, was taken and 100mL of Na with a concentration of 50mg/L was added 2 MoO 4 The solution is stirred and reacted for 24 hours at constant temperature and then transferred into a hydrothermal reaction kettle. The reaction was hydrothermal at 126℃for 4h. The reacted suspension was centrifuged at 4000r/min, washed 3 times with absolute ethanol, dried in an oven at 60 c, and ground into powder using a mortar to obtain a double hydroxide intercalation.
Step 3: pretreatment of steel sheet matrix
Sequentially polishing X70 steel with 280, 360, 600, 800 and 1000 mesh SiC sand paper, and ultrasonically treating and cleaning with petroleum ether and absolute ethyl alcoholAnd at N 2 Drying in atmosphere for use.
Step 4: buffer layer preparation
Adipic Acid Dihydrazide (ADH) and Polydimethylsiloxane (PDMS) were spin coated on the X70 steel sheet substrate in step 3 using a spin coater at a mass ratio of 30:1, and heated at 60℃for 2 hours.
Step 5: assembly of coatings
Spraying the powder in the step 2 on the unconsolidated buffer layer in the step 4 by using a spray gun, regulating the air pressure to be 0.6MPa, the oil output to be 1.0 circle, the spray gun height to be 25cm and the atomization value to be 0.5 circle, then placing the sample in a baking oven at 120 ℃, pressing for 2 hours by using a 2000g weight under the gravity of 25KPa, and solidifying for 24 hours at normal temperature. Finally, the anti-corrosion erosion-resistant multifunctional coating based on triple functions is prepared.
Fig. 1 is a schematic structural view of an anti-corrosion and erosion-resistant multifunctional coating layer according to embodiment 1 of the present invention, and the overall structure of the coating layer can be clearly shown in the figure. As shown in fig. 1, the bottom is a metal substrate, the middle buffer layer is modified Polydimethylsiloxane (PDMS), which protects the underlying metal substrate and partially adheres to the outer coating. The outermost layer is two-dimensional modified material double-layer hydroxide (LDH) loaded with corrosion inhibitor, and the continuous phase is epoxy resin.
FIG. 2 shows the polarization curve of a corrosion-resistant erosion-resistant multifunctional coating made in accordance with the present invention. The figure shows the potentiodynamic polarization curves of the X65 carbon steel and the X65 carbon steel with the coating according to the invention added after 24h of immersion in a solution containing 3.5% NaCl. As can be seen from the graph, the corrosion current density of X65 carbon steel in the presence of the coating is 1.4358X 10 -4 A·cm -2 Reduced to 2.1533 multiplied by 10 - 5 A·cm -2 The calculated corrosion inhibition rate is 85.00%.
FIG. 3 shows the electrochemical impedance spectrum of a corrosion-resistant erosion-resistant multifunctional coating prepared by the invention. The Electrochemical Impedance Spectra (EIS) of the X65 carbon steel and the coated X65 carbon steel after 24h immersion in a 3.5% nacl solution are shown. The arc-tolerant radius of the X65 carbon steel added with the coating is larger than that of single X65 carbon steel, and the coating is addedThe transfer resistance Rp of the X65 carbon steel is 2610 omega/cm 2 Increase to 8733 Ω/cm 2 This demonstrates that the corrosion resistance of the surface of the X65 steel sheet to which the coating was added is more pronounced.
FIG. 4 shows the wettability detection evaluation of the corrosion-resistant erosion-resistant multifunctional coating prepared by the invention. The contact angle values of the coatings of class 4 of examples 1, 2, 3, 4 according to the invention, as measured by a contact angle measuring instrument using the fixed pendant drop method, are shown as 156.6 °, 131.8 °, 149.2 °, 124.1 °, respectively. Of these, example 1 showed the best preservative and hydrophobic effects.
FIG. 5 shows the effect of 1000 cycles of abrasion resistance test on coating wettability of an anti-corrosive erosion-resistant multifunctional coating prepared by the invention. The contact angle measurements after different abrasion cycles of 200, 400, 600, 800, 1000 were performed on example 1 using an abrasion tester, respectively, the contact angle after 1000 cycles of abrasion was reduced from 156.6 ° to 151.8 °, and the coating was still a superhydrophobic coating.
FIG. 6 shows the erosion rate of an erosion loop test for an erosion resistant multifunctional coating made in accordance with the present invention. In the erosion loop test, the exposed area of the test sample was 8mm×6mm, and the sample thickness was 0.6mm. The particle size is 280 μm-320 μm, and the density is 2650kg/m 3 Is a quartz sand of (2). Sand is brought into the experimental loop by the compressor. The inlet velocity was 20m/s and the sand mass flow was 0.2kg/s. The test lasted 24 hours. As shown in the figure, the erosion rate measured after the erosion experiment is carried out on the X65, the X65 with the buffer coating and the X65 without the buffer coating (the preparation method of the coating is the same as the invention, and the preparation step of the buffer layer is omitted) by placing the buffer layer at different angle positions in a pipeline through an erosion loop. Wherein, the minimum X65 erosion rate of the added buffer coating is 56.86nm/s.
Claims (8)
1. The preparation method of the corrosion-resistant and erosion-resistant multifunctional coating is characterized by comprising the following steps of:
(1) Preparation of modified two-dimensional porous Material
Dissolving and dispersing a two-dimensional porous material in deionized water, adding biological buffer salt into an aqueous solution containing the two-dimensional porous material, stirring, and drying to obtain a modified two-dimensional porous material;
(2) Preparation of double hydroxide intercalation
Preparing a substrate solution by adopting nitrate and deionized water;
dissolving a corrosion inhibitor in deionized water to prepare a corrosion inhibitor solution;
adding a substrate solution and the modified two-dimensional porous material prepared in the step (1) into a corrosion inhibitor solution for reaction, centrifuging and drying the obtained suspension to obtain a double-layer hydroxide intercalation;
(3) Pretreatment of steel sheet matrix
Polishing the steel sheet substrate by using sand paper, then performing ultrasonic cleaning, and then performing ultrasonic cleaning on the steel sheet substrate in N 2 Drying in atmosphere for standby;
(4) Preparation of buffer layer
Selecting a buffer coating and a curing agent, using a spin coater to spin coat on a steel sheet substrate, and heating to obtain an unconsolidated buffer layer;
(5) Assembled coating
Spraying the double-layer hydroxide intercalation obtained in the step (2) onto the unconsolidated buffer layer obtained in the step (4), then placing the buffer layer in an oven, and performing gravity pressing by using a hot pressing method to prepare the corrosion-resistant erosion-resistant multifunctional coating;
in step (1): the two-dimensional porous material is basalt flake, hexagonal boron nitride or graphene oxide; the concentration of the aqueous solution containing the two-dimensional porous material is 0.2-0.3g/mL;
the biological buffer salt is tris (hydroxymethyl) aminomethane hydrochloride, 3-morpholinopropionsulfonate or N-tris (hydroxymethyl) methylglycinate; controlling the stirring temperature to be 25-30 ℃, the stirring rotating speed to be 400-500r/min, and the stirring time to be 20-24h; controlling the drying temperature to be 80-90 ℃;
in the step (2): the corrosion inhibitor is selected from molybdate, vanadate and tungstate; the concentration of the corrosion inhibitor solution is 10-50mg/L.
2. The method for preparing the corrosion-resistant and erosion-resistant multifunctional coating according to claim 1, wherein in the step (1): adding dopamine into the aqueous solution containing the two-dimensional porous material at the same time when adding the biological buffer salt; the dosage ratio of the dopamine to the two-dimensional porous material is 0.2-0.3:0.1-2.
3. The method for preparing the corrosion-resistant and erosion-resistant multifunctional coating according to claim 1, wherein in the step (2): the nitrate is selected from one or more of aluminum nitrate, calcium nitrate, zinc nitrate, magnesium nitrate and sodium nitrate; adding nitrate into deionized water, and then introducing N 2 And regulating the pH value to 11-13 by using NaOH solution to obtain a substrate solution.
4. A method for preparing the corrosion-resistant and erosion-resistant multifunctional coating according to claim 3, which is characterized in that: firstly, mixing magnesium nitrate, calcium nitrate or zinc nitrate with aluminum nitrate, and adding deionized water to obtain a solution A; then, sodium nitrate is dissolved in deionized water to obtain solution B; adding the solution B into a three-neck flask, and then introducing N 2 Dropwise adding the solution A while stirring, controlling the reaction temperature to 90 ℃ after the dropwise adding, and regulating the pH of the mixed solution to 12 by using a 1mol/L NaOH solution to obtain a substrate solution.
5. The method for preparing the corrosion-resistant and erosion-resistant multifunctional coating according to claim 1, wherein in the step (2): adding a substrate solution and the modified two-dimensional porous material prepared in the step (1) into a corrosion inhibitor solution, and stirring and reacting at 60-80 ℃ for 20-24 hours; transferring the mixture into a hydrothermal reaction kettle, carrying out hydrothermal reaction for 4 hours at the temperature of 126-140 ℃, centrifuging the suspension after the reaction, washing the suspension with absolute ethyl alcohol, drying the suspension in an oven, and grinding the suspension into powder by using a mortar to obtain the double-layer hydroxide intercalation.
6. The method for preparing the corrosion-resistant and erosion-resistant multifunctional coating according to claim 1, wherein in the step (3): the steel sheet matrix is any one of X65 steel, X70 steel and L316 steel; the sand paper adopts 280, 360, 600, 800, 1000 mesh SiC sand paper; petroleum ether and absolute ethyl alcohol are sequentially used during ultrasonic cleaning.
7. The method for preparing the corrosion-resistant and erosion-resistant multifunctional coating according to claim 1, wherein in the step (4): the buffer coating is made of polydimethylsiloxane, polyurethane or epoxy resin; the curing agent is selected from vinyl triamine, diaminodiphenyl methane or adipic acid dihydrazide;
the mass ratio of the curing agent to the buffer coating is 30:1;
the heating temperature is 60 ℃ and the heating time is 2h.
8. The method for preparing the corrosion-resistant and erosion-resistant multifunctional coating according to claim 1, wherein in the step (5), the spraying parameters are controlled as follows: the air pressure is 0.2MPa-0.8MPa, the spray gun height is 15cm-25cm, and the atomization value is 0.5-0.8 circle;
the gravity pressing process by adopting the hot pressing method comprises the following steps: controlling the temperature of the oven to 120 ℃, firstly pressing the oven for 2 hours under the gravity of 25KPa by using weights, and then curing the oven for 24 hours at normal temperature.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09176609A (en) * | 1995-12-27 | 1997-07-08 | Kawasaki Steel Corp | Adhesive composition for heavy-duty corrosionproof coated steel product and heavy-duty corrosionproof coated steel product prepared using the same |
| CN104619431A (en) * | 2012-04-17 | 2015-05-13 | 凯密特尔有限责任公司 | Process for coating metallic surfaces with coating compositions containing particles of a layered double hydroxide |
| CN104927583A (en) * | 2015-07-06 | 2015-09-23 | 江苏固格澜栅防护设施有限公司 | Preparation method and application of intelligent anti-corrosion coating capable of being automatically repaired |
| CN109399629A (en) * | 2018-12-28 | 2019-03-01 | 北京航空航天大学 | A kind of preparation method of the sol solutions containing two-dimensional nano container payload corrosion inhibiter |
| WO2020034141A1 (en) * | 2018-08-16 | 2020-02-20 | 中国科学院宁波材料技术与工程研究所 | Graphene nano-container-based coating material and self-repairing coating layer, preparation method therefor, and application thereof |
| CN112301344A (en) * | 2020-09-04 | 2021-02-02 | 深圳大学 | Method for in-situ preparation of layered double hydroxide passive film |
| CN112553189A (en) * | 2020-10-31 | 2021-03-26 | 北京化工大学 | Method for constructing multi-mode catalytic system based on magnetic layered double hydroxide and enzyme-DNA compound |
| CN113512337A (en) * | 2021-07-14 | 2021-10-19 | 苏州嘉乐威新材料股份有限公司 | High-adhesion epoxy varnish modified based on load-type corrosion inhibitor and preparation method thereof |
| CN114535022A (en) * | 2022-01-27 | 2022-05-27 | 中国石油大学(华东) | Preparation method of super-hydrophobic wear-resistant coating containing buffer structure |
| CN115110068A (en) * | 2022-06-21 | 2022-09-27 | 江汉大学 | Corrosion-resistant hydrotalcite-like compound/metal composite coating and preparation method and application thereof |
| CN115156010A (en) * | 2022-06-17 | 2022-10-11 | 北京航空航天大学 | Construction method of super-hydrophobic self-healing anticorrosive coating with corrosion inhibition function |
| CN115323383A (en) * | 2022-08-09 | 2022-11-11 | 河南大学 | Preparation method of hydrotalcite composite coating modified by ionic liquid corrosion inhibitor and application of hydrotalcite composite coating in magnesium alloy corrosion prevention |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100233146A1 (en) * | 2002-09-09 | 2010-09-16 | Reactive Surfaces, Ltd. | Coatings and Surface Treatments Having Active Enzymes and Peptides |
| US10307789B2 (en) * | 2015-10-19 | 2019-06-04 | International Business Machines Corporation | Structure comprising a 2-dimensional material |
| US20190330757A1 (en) * | 2018-04-25 | 2019-10-31 | University Of North Texas | Metal-clay nanocomposite coatings for corrosion resistance |
-
2023
- 2023-02-27 CN CN202310168239.9A patent/CN116213227B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09176609A (en) * | 1995-12-27 | 1997-07-08 | Kawasaki Steel Corp | Adhesive composition for heavy-duty corrosionproof coated steel product and heavy-duty corrosionproof coated steel product prepared using the same |
| CN104619431A (en) * | 2012-04-17 | 2015-05-13 | 凯密特尔有限责任公司 | Process for coating metallic surfaces with coating compositions containing particles of a layered double hydroxide |
| CN104927583A (en) * | 2015-07-06 | 2015-09-23 | 江苏固格澜栅防护设施有限公司 | Preparation method and application of intelligent anti-corrosion coating capable of being automatically repaired |
| WO2020034141A1 (en) * | 2018-08-16 | 2020-02-20 | 中国科学院宁波材料技术与工程研究所 | Graphene nano-container-based coating material and self-repairing coating layer, preparation method therefor, and application thereof |
| CN109399629A (en) * | 2018-12-28 | 2019-03-01 | 北京航空航天大学 | A kind of preparation method of the sol solutions containing two-dimensional nano container payload corrosion inhibiter |
| CN112301344A (en) * | 2020-09-04 | 2021-02-02 | 深圳大学 | Method for in-situ preparation of layered double hydroxide passive film |
| CN112553189A (en) * | 2020-10-31 | 2021-03-26 | 北京化工大学 | Method for constructing multi-mode catalytic system based on magnetic layered double hydroxide and enzyme-DNA compound |
| CN113512337A (en) * | 2021-07-14 | 2021-10-19 | 苏州嘉乐威新材料股份有限公司 | High-adhesion epoxy varnish modified based on load-type corrosion inhibitor and preparation method thereof |
| CN114535022A (en) * | 2022-01-27 | 2022-05-27 | 中国石油大学(华东) | Preparation method of super-hydrophobic wear-resistant coating containing buffer structure |
| CN115156010A (en) * | 2022-06-17 | 2022-10-11 | 北京航空航天大学 | Construction method of super-hydrophobic self-healing anticorrosive coating with corrosion inhibition function |
| CN115110068A (en) * | 2022-06-21 | 2022-09-27 | 江汉大学 | Corrosion-resistant hydrotalcite-like compound/metal composite coating and preparation method and application thereof |
| CN115323383A (en) * | 2022-08-09 | 2022-11-11 | 河南大学 | Preparation method of hydrotalcite composite coating modified by ionic liquid corrosion inhibitor and application of hydrotalcite composite coating in magnesium alloy corrosion prevention |
Non-Patent Citations (3)
| Title |
|---|
| Bioinspired polydopamine-layered double hydroxide nanocomposites: controlled synthesis and multifunctional performance;Hye Jin Nam;RSC ADVANCES;第6卷(第30期);第24952-24958页 * |
| 王林 ; 陈晔 ; .纳米复合双层防垢涂层的制备及其性能研究.轻工学报.2017,第32卷(第01期),第65-71页. * |
| 表面改性水滑石的制备及其耐腐蚀性能研究;顾传君;腐蚀科学与防护技术;第31卷(第1期);第45-51页 * |
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