CN117534999A - Graphene anticorrosive thread coating and preparation method thereof - Google Patents
Graphene anticorrosive thread coating and preparation method thereof Download PDFInfo
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- CN117534999A CN117534999A CN202311825071.0A CN202311825071A CN117534999A CN 117534999 A CN117534999 A CN 117534999A CN 202311825071 A CN202311825071 A CN 202311825071A CN 117534999 A CN117534999 A CN 117534999A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 238000000576 coating method Methods 0.000 title claims abstract description 54
- 239000011248 coating agent Substances 0.000 title claims abstract description 53
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000003822 epoxy resin Substances 0.000 claims abstract description 48
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 48
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000005260 corrosion Methods 0.000 claims abstract description 41
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 32
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- 239000000919 ceramic Substances 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 22
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- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 15
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- 238000005303 weighing Methods 0.000 claims description 6
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- 238000001132 ultrasonic dispersion Methods 0.000 claims description 4
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- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 2
- WVJKSRJWLIVTGA-UHFFFAOYSA-M 2-hydroxyethyl-dimethyl-octadecylazanium;perchlorate Chemical group [O-]Cl(=O)(=O)=O.CCCCCCCCCCCCCCCCCC[N+](C)(C)CCO WVJKSRJWLIVTGA-UHFFFAOYSA-M 0.000 claims description 2
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- 238000001035 drying Methods 0.000 claims description 2
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
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- 239000012286 potassium permanganate Substances 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
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- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
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Classifications
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
-
- 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
- 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
- C08K2003/0806—Silver
-
- 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
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses a graphene anti-corrosion thread coating and a preparation method thereof, comprising the following steps: 40-50 parts of epoxy resin, 35-50 parts of polyurethane modified epoxy resin, 30-45 parts of organic silicon resin, 10-18 parts of modified graphene, 5-10 parts of acetone, 2-5 parts of nano titanium dioxide, 2-5 parts of nano ceramic powder, 2-5 parts of talcum powder, 2-5 parts of titanium dioxide, 3-5 parts of curing agent, 2-5 parts of dispersing agent, 1-4 parts of silver powder and 1-4 parts of defoaming agent; the graphene anti-corrosion thread coating prepared by the method has the advantages of higher solid content, good compactness, wear resistance, pressure resistance, good heat dissipation performance, stronger corrosion resistance, high adhesion, strong water resistance and longer service life.
Description
Technical Field
The invention relates to the technical field of anti-corrosion coating, in particular to graphene anti-corrosion thread coating and a preparation method thereof.
Background
Along with the continuous deep development of petroleum and natural gas exploration, special well conditions with complex working conditions are continuously increased, especially special well conditions such as a directional well, an inclined well, a horizontal well, a large displacement well, a traversing well and the like, the torque born by a drilling tool is large, the number of times of drilling tool failure accidents is continuously increased, and once the accidents such as drilling tool failure and the like occur, the drilling period is directly prolonged, the investment cost is increased, and huge economic losses are caused. Failure modes such as fracture, sticking buckle, structural integrity loss and the like often occur in failure accidents, and sticking buckle and drilling fluid leakage have close relations with drilling tool threads and drilling tool thread compound in the failure modes.
The drilling tool thread compound is smeared on the surface of the drilling tool thread, and the main function is to form a layer of lubricating film on the surface of the thread, and the lubricating film still has good lubricating and anti-sticking performance under the action of very high load and pressure, so that the thread gluing of internal and external threads made of the same material is prevented as much as possible, various loads and slipping occur in the layer of lubricating film, part of energy is absorbed, and the thread gluing phenomenon is reduced. However, along with the continuous rigor of drilling conditions, especially when the drilling tool encounters inclined wells, horizontal wells and crossing wells, the torque born by the drilling tool is very large, and the drilling tool threads are frequently worn seriously and stuck tightly, so that failure accidents such as fracture and the like can occur seriously. With the appearance of new working conditions, the anti-sticking drilling tool thread compound capable of resisting large torque is adopted while the construction process is optimized and the quality of the drilling tool is improved.
Graphene is a novel two-dimensional sp 2 The hybrid carbon nanomaterial meets the performance requirements of filler such as chemical stability, specific surface area and permeability resistance, is an ideal nanofiller of various polymer anti-corrosion coatings, and can improve the mechanical property, heat conduction property and corrosion resistance of the polymer nanocomposite by adding a small amount of graphene; however, the anti-corrosion effect of the existing graphene anti-corrosion coating is not good enough and can not well meet the use requirement, so how to provide a graphene anti-corrosion thread coating with excellent anti-corrosion performance, strong water resistance and good adhesion is a problem to be solved by the technicians in the field.
Disclosure of Invention
In view of the above, the invention provides a graphene anticorrosive thread coating and a preparation method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the graphene anticorrosive thread coating comprises the following components in parts by weight: 40-50 parts of epoxy resin, 35-50 parts of polyurethane modified epoxy resin, 30-45 parts of organic silicon resin, 10-18 parts of modified graphene, 5-10 parts of acetone, 2-5 parts of nano titanium dioxide, 2-5 parts of nano ceramic powder, 2-5 parts of talcum powder, 2-5 parts of titanium dioxide, 3-5 parts of curing agent, 2-5 parts of dispersing agent, 1-4 parts of silver powder and 1-4 parts of defoaming agent.
Further, the graphene anti-corrosion thread coating comprises the following components in parts by weight: 40 parts of epoxy resin, 45 parts of polyurethane modified epoxy resin, 35 parts of organic silicon resin, 14 parts of modified graphene, 5 parts of acetone, 3 parts of nano-scale titanium dioxide, 2 parts of talcum powder, 2 parts of titanium dioxide, 4 parts of curing agent, 3 parts of dispersing agent, 1 part of silver powder and 2 parts of defoaming agent.
Further, the graphene anti-corrosion thread coating comprises the following components in parts by weight: 45 parts of epoxy resin, 50 parts of polyurethane modified epoxy resin, 30 parts of organic silicon resin, 16 parts of modified graphene, 8 parts of acetone, 5 parts of nano titanium dioxide, 2 parts of nano ceramic powder, 4 parts of talcum powder, 3 parts of titanium dioxide, 5 parts of curing agent, 5 parts of dispersing agent, 3 parts of silver powder and 1 part of defoamer.
Further, the graphene anti-corrosion thread coating comprises the following components in parts by weight: 50 parts of epoxy resin, 40 parts of polyurethane modified epoxy resin, 40 parts of organic silicon resin, 12 parts of modified graphene, 5 parts of acetone, 2 parts of nano-scale titanium dioxide, 4 parts of nano ceramic powder, 2 parts of talcum powder, 2 parts of titanium dioxide, 3 parts of curing agent, 2 parts of dispersing agent, 2 parts of silver powder and 3 parts of defoamer.
Still further, the curing agent is an aqueous isocyanate.
Still further, the dispersant is octadecyl dimethyl hydroxyethyl ammonium perchlorate.
Still further, the defoamer is a polyether modified defoamer.
Further, the purity of the silver powder, the nano ceramic powder, the talcum powder and the titanium dioxide is more than 99 percent.
Further, the preparation of the modified graphene specifically comprises the following steps:
(1) Preparation of graphene oxide: mixing graphene with sulfuric acid, phosphoric acid, potassium permanganate and the like, performing oxidation reaction, washing a product, performing ultrasonic dispersion for 1h, performing centrifugal purification, and performing freeze drying to obtain graphene oxide;
(2) Modification of graphene: and (3) placing graphene oxide into 95% ethanol for ultrasonic dispersion, adding a silane coupling agent, reacting for 6 hours at the temperature of 65 ℃, heating to 80 ℃, continuing to react for 2 hours, filtering, washing with acetone, and drying to obtain the modified graphene.
Still further, the silane coupling agent in the step (2) of preparing the modified graphene is any one of gamma-aminopropyl triethoxysilane, gamma-glycidoxypropyl trimethoxysilane, and vinyltriethoxysilane.
As the invention concept same as the technical scheme, the invention also claims a preparation method of the graphene anti-corrosion thread coating, which specifically comprises the following steps:
(1) Weighing: weighing epoxy resin, polyurethane modified epoxy resin, organic silicon resin, modified graphene, acetone, nanoscale titanium dioxide, nano ceramic powder, talcum powder, titanium dioxide, curing agent, dispersing agent, silver powder and defoaming agent according to parts by weight for standby;
(2) Adding epoxy resin, polyurethane modified epoxy resin, organic silicon resin and modified graphene into a reaction kettle, and stirring at 45-55 ℃ and 600r/min for 30-35min to obtain a solution A;
(3) Adding silver powder, nanoscale titanium dioxide, nano ceramic powder, talcum powder and titanium dioxide into the solution A, stirring at 65-75 ℃ at a stirring speed of 1000r/min for 10-15min to obtain solution B;
(4) And (3) cooling the solution B to 35-40 ℃, adding a curing agent, a dispersing agent, a defoaming agent and acetone, and stirring at a stirring speed of 600r/min for 20-30min to obtain the graphene anti-corrosion thread coating.
Compared with the prior art, the graphene anti-corrosion thread coating and the preparation method thereof have the beneficial effects that: according to the invention, the carboxyl in the graphene oxide is reacted with the silane coupling agent to prepare modified graphene, and then reacted with polyurethane modified epoxy resin, silicone resin and the like to prepare graphene polyurethane modified epoxy resin, and the polyurethane modified epoxy resin is introduced, so that the cost can be effectively reduced, and the market demands can be met; the graphene has good mechanical properties, antistatic property, corrosion resistance and aging resistance; the polyurethane modified epoxy resin has excellent wear resistance, elasticity, hardness, solvent resistance and weather resistance; the epoxy resin has excellent chemical property, adhesive force, heat resistance and alkali resistance; the organic silicon resin is a thermosetting polysiloxane polymer with a highly cross-linked structure, has the dual characteristics of organic resin and inorganic material, has excellent physical and chemical properties, and has outstanding electrical insulation property, heat resistance, cold resistance and water resistance; according to the graphene anticorrosive threaded coating prepared by combining the components, the corrosion resistance, adhesion and water resistance of the coating can be effectively improved, and the coating is high in solid content, good in compactness, excellent in wear resistance, pressure resistance and self-heat dissipation performance.
In addition, experimental researches show that the components in the graphene anti-corrosion thread coating disclosed by the invention act together, any one component is removed, or the proportion is changed, so that a better anti-corrosion effect and water resistance can not be achieved, and the components have a synergistic effect.
Detailed Description
The following description will clearly and fully describe the technical solutions of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The graphene anticorrosive thread coating comprises the following components in parts by weight: 40 parts of epoxy resin, 45 parts of polyurethane modified epoxy resin, 35 parts of organic silicon resin, 14 parts of modified graphene, 5 parts of acetone, 3 parts of nano titanium dioxide, 3 parts of nano ceramic powder, 2 parts of talcum powder, 2 parts of titanium dioxide, 4 parts of curing agent, 3 parts of dispersing agent, 1 part of silver powder and 2 parts of defoamer.
Example 2
The graphene anticorrosive thread coating comprises the following components in parts by weight: 40 parts of epoxy resin, 50 parts of polyurethane modified epoxy resin, 30 parts of organic silicon resin, 16 parts of modified graphene, 8 parts of acetone, 5 parts of nano titanium dioxide, 2 parts of nano ceramic powder, 4 parts of talcum powder, 3 parts of titanium dioxide, 5 parts of curing agent, 5 parts of dispersing agent, 3 parts of silver powder and 1 part of defoamer.
Example 3
The graphene anticorrosive thread coating comprises the following components in parts by weight: 45 parts of epoxy resin, 40 parts of polyurethane modified epoxy resin, 40 parts of organic silicon resin, 12 parts of modified graphene, 5 parts of acetone, 2 parts of nano-scale titanium dioxide, 4 parts of nano ceramic powder, 2 parts of talcum powder, 2 parts of titanium dioxide, 3 parts of curing agent, 2 parts of dispersing agent, 2 parts of silver powder and 3 parts of defoamer.
Example 4
The graphene anticorrosive thread coating comprises the following components in parts by weight: 43 parts of epoxy resin, 38 parts of polyurethane modified epoxy resin, 42 parts of organic silicon resin, 10 parts of modified graphene, 7 parts of acetone, 3 parts of nano titanium dioxide, 2 parts of nano ceramic powder, 3 parts of talcum powder, 4 parts of titanium dioxide, 5 parts of curing agent, 4 parts of dispersing agent, 1 part of silver powder and 4 parts of defoamer.
Example 5
The graphene anticorrosive thread coating comprises the following components in parts by weight: 48 parts of epoxy resin, 32 parts of polyurethane modified epoxy resin, 36 parts of organic silicon resin, 15 parts of modified graphene, 9 parts of acetone, 5 parts of nano titanium dioxide, 3 parts of nano ceramic powder, 2 parts of talcum powder, 2 parts of titanium dioxide, 4 parts of curing agent, 2 parts of dispersing agent, 3 parts of silver powder and 2 parts of defoamer.
The preparation process of the graphene anticorrosive thread coating comprises the following steps:
(1) Weighing: weighing epoxy resin, polyurethane modified epoxy resin, organic silicon resin, modified graphene, acetone, nanoscale titanium dioxide, nano ceramic powder, talcum powder, titanium dioxide, curing agent, dispersing agent, silver powder and defoaming agent according to parts by weight for standby;
(2) Adding epoxy resin, polyurethane modified epoxy resin, silicone resin and modified graphene into a reaction kettle, and stirring at 45-55 ℃ and 600r/min for 30-35min to obtain a solution A;
(3) Adding silver powder, nanoscale titanium dioxide, nano ceramic powder, talcum powder and titanium dioxide into the solution A, stirring at 65-75 ℃ at a stirring speed of 1000r/min for 10-15min to obtain solution B;
(4) And (3) cooling the solution B to 35-40 ℃, adding a curing agent, a dispersing agent, a defoaming agent and acetone, and stirring at a stirring speed of 600r/min for 20-30min to obtain the graphene anti-corrosion thread coating.
Example 6
The anticorrosive paint prepared in examples 1 to 5 was coated with a commercially available product (manufactured by Fenyang house (Shanghai) Utility Co., ltd.) according to the national standard "GB/T1727 paint film general preparation method", and the performance test was performed on the coated films prepared from the paints of examples 1 to 5 and the commercially available product using the following standards, and the specific measurement results are shown in Table 1;
(1) Hardness: according to GB/T6739 standard, using Chinese type hardness pencil test, wherein the standard hardness is 6H to 6B respectively, the hardness of 6H is highest, the hardness is gradually decreased from 6H to 6B, and the test is performed by a durometer;
(2) Adhesion force: the adhesion was measured according to the specification of the paint film adhesion measurement method of GB/T1720-1988, and a cross-hatch method was used for the test;
(3) Abrasion resistance: according to the specification of GB/T1768-2006 color paint and varnish abrasion resistance measurement method, a rotary rubber grinding wheel method is adopted for measurement;
(4) Impact resistance: impact properties were tested as specified in GB/T1732-1993 paint film impact resistance assay;
(5) Water resistance: the water resistance is tested according to the specification of GB/T1733-1993 paint film water resistance measurement method;
(6) Alkali resistance: alkali resistance was measured according to the specification of GB/T1763-1979 paint film chemical resistance assay;
(7) Salt spray resistance: salt spray resistance was tested according to GB/T1771-1991 determination of neutral salt spray resistance of paints and varnishes.
TABLE 1
As shown in Table 1, compared with the commercial products, the modified graphene, polyurethane modified epoxy resin, epoxy resin and silicone resin are combined, nano titanium dioxide, nano ceramic powder and other substances are added, and the threaded anti-corrosion coating prepared by adding other functional additives and the like can remarkably improve the comprehensive performance of a paint film, and the coating prepared by the invention is remarkably superior to the commercial products in terms of hardness, adhesive force, wear resistance, impact resistance, water resistance, alkali resistance, neutral salt spray resistance and time and the like, so that the graphene anti-corrosion threaded coating prepared by the invention has more excellent water resistance, wear resistance and corrosion resistance.
Example 7
The content of volatile organic compounds and the solid content in examples 1 to 5 and the commercial products were measured according to GB/T23986-2009 and GB/T2793-1995 standards, respectively, and the specific results are shown in Table 2.
TABLE 2
As shown in Table 2, compared with the commercial products, the anti-corrosion thread coating has very low content of volatile organic compounds, which can reach 37g/L at the lowest, and benzene compounds such as benzene, xylene and the like, and substances such as formaldehyde, mercury, chromium, lead, cadmium and the like are not detected; in addition, the solid content of the anti-corrosion thread coating is obviously higher than that of a commercial product, so that the anti-corrosion effect of the anti-corrosion thread coating can be improved.
Example 8
The anticorrosive paint prepared in examples 1-5 and the commercially available product are respectively used for preparing coating films on a glass plate or a transparent plastic film, a lamp box is used for checking the number of bubbles existing in the unit area of the coating film on the glass plate or the plastic film, so that the macro compactness of the coating film is measured, and 5 methods adopted in the compactness test of the coating film are that 5 glass plates or transparent plastic films with the size of 1cm are taken 2 The number of bubbles present in the coating film was checked, and the results were as shown in Table 3.
TABLE 3 Table 3
As shown in Table 3, the microporous condition of the film reflects that the compactness of the film is obviously reduced compared with that of a commercially available product, and the number of micropores displayed by the anticorrosive thread coating after the film is coated is reduced by 1.7 at the lowest, so that the number of micropores is reduced by 84.11%; therefore, the corrosion-resistant threaded coating has fewer micropores among coating films, the better compactness is shown, the better barrier property to corrosive media is achieved, the passing rate of water, oxygen and corrosive ions can be greatly reduced, the corrosion to a substrate can be effectively slowed down, the salt spray resistance of the coating films is improved, and the corrosion-resistant effect is improved.
Example 9 verification of synergistic interaction between the Components
Comparative example 1: compared with the embodiment 1, the modified graphene is removed, and the rest components and the proportion are unchanged;
comparative example 2: compared with the embodiment 4, the modified graphene is replaced by unmodified graphene, and the rest components and the proportion are unchanged;
comparative example 3: compared with the example 4, the polyurethane modified epoxy resin is removed, and the rest components and the proportion are unchanged;
comparative example 4: compared with the example 4, the organic silicon resin is removed, and the rest components and the proportion are unchanged;
comparative example 5: compared with the example 4, the nano-scale titanium dioxide, the nano-ceramic powder and the talcum powder are removed, and the rest components and the proportion are unchanged.
The determination of the corrosion resistance, the content of volatile organic compounds, the solid content and the compactibility was carried out in the same manner as in examples 6 to 8, and is shown in Table 4;
TABLE 4 Table 4
As can be seen from Table 4, the prepared anticorrosive threaded coating has greatly reduced hardness, adhesion, wear resistance, impact resistance, water resistance, alkali resistance, solid content and compactness, and increased volatile organic compounds, thereby generally reducing the anticorrosive effect of the coating. It will be appreciated that the components of the invention work together and are not a superposition of the effects of the individual components.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The graphene anticorrosive thread coating is characterized by comprising the following components in parts by weight: 40-50 parts of epoxy resin, 35-50 parts of polyurethane modified epoxy resin, 30-45 parts of organic silicon resin, 10-18 parts of modified graphene, 5-10 parts of acetone, 2-5 parts of nano titanium dioxide, 2-5 parts of nano ceramic powder, 2-5 parts of talcum powder, 2-5 parts of titanium dioxide, 3-5 parts of curing agent, 2-5 parts of dispersing agent, 1-4 parts of silver powder and 1-4 parts of defoaming agent.
2. The graphene anti-corrosion threaded coating according to claim 1, which is characterized by comprising the following components in parts by weight: 40 parts of epoxy resin, 45 parts of polyurethane modified epoxy resin, 35 parts of organic silicon resin, 14 parts of modified graphene, 5 parts of acetone, 3 parts of nano titanium dioxide, 3 parts of nano ceramic powder, 2 parts of talcum powder, 2 parts of titanium dioxide, 4 parts of curing agent, 3 parts of dispersing agent, 1 part of silver powder and 2 parts of defoamer.
3. The graphene anti-corrosion threaded coating according to claim 1, which is characterized by comprising the following components in parts by weight: 45 parts of epoxy resin, 50 parts of polyurethane modified epoxy resin, 30 parts of organic silicon resin, 16 parts of modified graphene, 8 parts of acetone, 5 parts of nano titanium dioxide, 2 parts of nano ceramic powder, 4 parts of talcum powder, 3 parts of titanium dioxide, 5 parts of curing agent, 5 parts of dispersing agent, 3 parts of silver powder and 1 part of defoamer.
4. The graphene anti-corrosion threaded coating according to claim 1, which is characterized by comprising the following components in parts by weight: 50 parts of epoxy resin, 40 parts of polyurethane modified epoxy resin, 40 parts of organic silicon resin, 12 parts of modified graphene, 5 parts of acetone, 2 parts of nano-scale titanium dioxide, 4 parts of nano ceramic powder, 2 parts of talcum powder, 2 parts of titanium dioxide, 3 parts of curing agent, 2 parts of dispersing agent, 2 parts of silver powder and 3 parts of defoamer.
5. The graphene anti-corrosion thread coating according to any one of claims 1-4, wherein the curing agent is an aqueous isocyanate; the dispersing agent is octadecyl dimethyl hydroxyethyl ammonium perchlorate; the defoaming agent is a polyether modified defoaming agent.
6. The graphene anti-corrosion threaded coating according to claim 5, wherein the preparation of the modified graphene specifically comprises the following steps:
(1) Preparation of graphene oxide: mixing graphene with sulfuric acid, phosphoric acid, potassium permanganate and the like, performing oxidation reaction, washing a product, performing ultrasonic dispersion for 1h, performing centrifugal purification, and performing freeze drying to obtain graphene oxide;
(2) Modification of graphene: and (3) placing graphene oxide into 95% ethanol for ultrasonic dispersion, adding a silane coupling agent, reacting for 6 hours at the temperature of 65 ℃, heating to 80 ℃, continuing to react for 2 hours, filtering, washing with acetone, and drying to obtain the modified graphene.
7. The graphene anti-corrosion thread coating according to claim 6, wherein the silane coupling agent in the step (2) is any one of gamma-aminopropyl triethoxysilane, gamma-glycidoxypropyl trimethoxysilane, and vinyltriethoxysilane.
8. The preparation method of the graphene anti-corrosion thread coating as claimed in claim 7, which is characterized by comprising the following steps:
(1) Weighing: weighing epoxy resin, polyurethane modified epoxy resin, organic silicon resin, modified graphene, acetone, nanoscale titanium dioxide, nano ceramic powder, talcum powder, titanium dioxide, curing agent, dispersing agent, silver powder and defoaming agent according to parts by weight for standby;
(2) Adding epoxy resin, polyurethane modified epoxy resin, organic silicon resin and modified graphene into a reaction kettle, and stirring at 45-55 ℃ and 600r/min for 30-35min to obtain a solution A;
(3) Adding silver powder, nanoscale titanium dioxide, nano ceramic powder, talcum powder and titanium dioxide into the solution A, stirring at 65-75 ℃ at a stirring speed of 1000r/min for 10-15min to obtain solution B;
(4) And (3) cooling the solution B to 35-40 ℃, adding a curing agent, a dispersing agent, a defoaming agent and acetone, and stirring at a stirring speed of 600r/min for 20-30min to obtain the graphene anti-corrosion thread coating.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103965745A (en) * | 2014-05-13 | 2014-08-06 | 中国科学院宁波材料技术与工程研究所 | Epoxy resin composite coating solution, and preparation method and application method thereof |
| CN108997892A (en) * | 2018-09-07 | 2018-12-14 | 海洋化工研究院有限公司 | A kind of graphene anticorrosive paint and preparation method |
| CN113881316A (en) * | 2021-11-08 | 2022-01-04 | 大庆市盛日石油技术开发有限公司 | Graphene extreme-pressure anti-sticking anti-corrosion thread coating |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103965745A (en) * | 2014-05-13 | 2014-08-06 | 中国科学院宁波材料技术与工程研究所 | Epoxy resin composite coating solution, and preparation method and application method thereof |
| CN108997892A (en) * | 2018-09-07 | 2018-12-14 | 海洋化工研究院有限公司 | A kind of graphene anticorrosive paint and preparation method |
| CN113881316A (en) * | 2021-11-08 | 2022-01-04 | 大庆市盛日石油技术开发有限公司 | Graphene extreme-pressure anti-sticking anti-corrosion thread coating |
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