CN113045961A - Graphene modified fluorosilicone anticorrosive wear-resistant coating and preparation method thereof - Google Patents
Graphene modified fluorosilicone anticorrosive wear-resistant coating and preparation method thereof Download PDFInfo
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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
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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
- 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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- 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
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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
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention provides a graphene modified fluorosilicone anticorrosive wear-resistant coating and a preparation method thereof, and relates to the field of organic polymer materials. The graphene modified fluorosilicone anticorrosive wear-resistant coating comprises a component A and a component B, wherein the mass ratio of the component A to the component B is (95-105): (35-50), wherein the component A is prepared from the following raw materials in parts by mass: 32.5-68.5 parts of mixed epoxy resin, 25-56 parts of wear-resistant filler, 0.5-2 parts of nano graphene, 1-5 parts of silane coupling agent and 2-10 parts of mixed solvent, wherein the component B is generated by the following raw materials in parts by mass through addition reaction: 8.5 to 12.5 parts of vegetable polyene phenol, 8.5 to 12.5 parts of diethylene triamine and 15 to 25 parts of triethylene tetramine. Stress relief is improved by adopting mixed epoxy resin, adhesive force and corrosion resistance are improved, and meanwhile, corrosion resistance and permeability of a pattern layer are greatly improved through a laminated structure of graphene, so that the purpose of corrosion resistance is achieved, and the method is worthy of being widely popularized.
Description
Technical Field
The invention relates to the field of organic polymer materials, in particular to graphene modified fluorosilicone anticorrosive wear-resistant paint and a preparation method thereof.
Background
For bricks or concrete and steel lining chimneys used in the industries of thermal power plants, chemical industry, metallurgy and the like, anticorrosion treatment is an important project, and in the internal structure of the chimney, special anticorrosion treatment needs to be carried out on some special parts, such as oxhorn, dust deposition platforms and internal and external corners.
At present, the chimney anticorrosion technology mainly comprises the anticorrosion protection of paints such as flake daub, foam glass bricks, vinyl glass fiber reinforced plastics, titanium steel composite boards and the like, but the paints have certain defects, and the problems exist in the aspects of chimney anticorrosion design, standard specification and practical application, so that the chimney of a power plant is frequently maintained, the maintenance cost is extremely high, and the normal production and economic benefits of the power plant are greatly influenced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a graphene modified fluorosilicone anticorrosive wear-resistant coating and a preparation method thereof, and solves the problems of one-time construction and corrosion resistance of special media.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the graphene modified fluorosilicone anticorrosive wear-resistant coating comprises a component A and a component B, wherein the mass ratio of the component A to the component B is (95-105): (35-50), wherein the component A is prepared from the following raw materials in parts by mass: 32.5-68.5 parts of mixed epoxy resin, 25-56 parts of wear-resistant filler, 0.5-2 parts of nano graphene, 1-5 parts of silane coupling agent and 2-10 parts of mixed solvent, wherein the component B is generated by the following raw materials in parts by mass through addition reaction: 8.5 to 12.5 parts of vegetable polyene phenol, 8.5 to 12.5 parts of diethylene triamine and 15 to 25 parts of triethylene tetramine.
Preferably, the mixed epoxy resin is a mixture of bisphenol A epoxy resin, novolac epoxy resin and epoxy acrylate resin, and the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin to the epoxy acrylate resin is (25-52): (4.5-8.5): (3-8), the molecular weight of the bisphenol A epoxy resin is 3000-8000, the molecular weight of the novolac epoxy resin is 5000-10000, and the molecular weight of the epoxy acrylate resin is 5000-8000.
Preferably, the wear-resistant filler is a mixture of calcined oxide, pyroxene powder and sericite, and the mass ratio of the calcined oxide to the pyroxene powder to the sericite is (10-28): (7.5-12.5): (7.5-15.5).
Preferably, the mixed solvent is a mixture of propylene glycol methyl ether and diethylene glycol butyl ether acetate, and the mass ratio of the propylene glycol methyl ether to the diethylene glycol butyl ether acetate is (2-7.5): (1-2).
Preferably, the silane coupling agent refers to a silane coupling agent containing an isocyanate group.
Preferably, the plant polyene phenol, the diethylenetriamine and the triethylenetetramine are all used as curing agents, wherein the plant polyene phenol is a renewable natural phenol mixture, and the diethylenetriamine and the triethylenetetramine are all products of high-temperature polymerization reaction for 6 hours at the temperature of 100-120 ℃.
Preferably, the preparation method of the graphene modified fluorosilicone anticorrosive wear-resistant coating comprises the following steps:
s1, firstly, adding the mixed epoxy resin, the wear-resistant filler and the nano graphene into a stirring tank, stirring at the speed of 1500-1800 r/min, simultaneously adding the mixed solvent and the silane coupling agent which are prepared in proportion in sequence while stirring, stirring and dispersing for 20-30 min, then grinding to the fineness of 15-20 um by using a sand mill, filtering and discharging to obtain a component A;
s2, adding plant polyene phenol, diethylenetriamine and triethylenetetramine into a blending tank, dispersing at a stirring speed of 1200-1600 r/min for 10-20 min until the mixture is uniform, filtering and discharging to obtain a component B;
and S3, mixing the prepared component A and the component B according to a certain mass ratio, and uniformly stirring to obtain the graphene modified fluorosilicone anticorrosive wear-resistant coating.
(III) advantageous effects
The invention provides a graphene modified fluorosilicone anticorrosive wear-resistant coating and a preparation method thereof. The method has the following beneficial effects:
according to the invention, the mixed epoxy resin is adopted to improve the stress relief, the adhesive force and the corrosion resistance, and simultaneously the fluorine-silicon coating is modified by the graphene, and the graphene can be filled in the pores and the defects of the coating due to the small size of the graphene, so that the coating is more compact, the micromolecular corrosion medium is prevented and delayed from being immersed into a metal matrix to a certain extent, the physical isolation and shielding effects of the coating are enhanced, and the corrosion resistance of the coating is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the embodiment of the invention provides a graphene modified fluorosilicone anticorrosive wear-resistant coating, which comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 97: 50, the component A is composed of the following raw materials in parts by mass: 33 parts of mixed epoxy resin, 53 parts of wear-resistant filler, 1 part of nano graphene, 3 parts of silane coupling agent and 7 parts of mixed solvent, wherein the graphene can be filled in holes and defects of the coating due to the small size of the graphene, so that the coating is more compact, the small molecular corrosion medium is prevented and delayed from being immersed into a metal matrix to a certain extent, the physical isolation and shielding effects of the coating are enhanced, the corrosion resistance of the coating is improved, the graphene is of an extremely thin lamellar structure and is stacked layer by layer in the coating to form a compact physical isolation layer, the path of the small molecular corrosion medium for being immersed into the coating is more complicated, the passing time is greatly prolonged, the physical shielding effect is achieved, the corrosion time is also prolonged, the corrosion prevention purpose is achieved, and the component B is generated by the following raw materials in parts by mass through an addition reaction: the plant polyene phenol is a renewable natural phenol mixture, has rich and easily-obtained sources, low price, no toxicity and no odor, can be matched with various monomers and resins to prepare a coating, an adhesive, an anti-friction material, a surfactant and the like with good performance, and the prepared coating is suitable for steel structure anticorrosion primers of modern engineering buildings such as offshore oil drilling platforms, bridges, ships, railway vehicles, automobiles, airplanes, containers, oil pipelines, related power transmission and transformation equipment, chemical equipment, power plant chimneys, mine equipment and the like and has excellent adhesive force and anticorrosion protection effect.
The mixed epoxy resin is a mixture of bisphenol A epoxy resin, novolac epoxy resin and epoxy acrylate resin, and the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin to the epoxy acrylate resin is 25: 5: and 3, the molecular weight of the bisphenol A epoxy resin is 3000-8000, the molecular weight of the novolac epoxy resin is 5000-10000, and the molecular weight of the epoxy acrylate resin is 5000-8000.
The wear-resistant filler is a mixture of calcined oxide, pyroxene powder and sericite, and the mass ratio of the calcined oxide to the pyroxene powder to the sericite is 28: 10: and 15, the calcined oxide can be aluminum oxide, zinc oxide and the like, so that the calcined oxide, the pyroxene powder and the sericite have the effect of improving the wear resistance, and the wear resistance of the coating can be greatly improved by matching the wear-resistant filler and the graphene.
The mixed solvent is a mixture of propylene glycol methyl ether and diethylene glycol butyl ether acetate, and the mass ratio of the propylene glycol methyl ether to the diethylene glycol butyl ether acetate is 6: 1.
the silane coupling agent is a silane coupling agent containing isocyanate groups, has an excellent promoting effect on adhesion, and alkyl and aryl silanes in the molecular structure are used for improving the comprehensive effects of coating gloss, hiding power, miscibility, wettability and dispersibility of the pigment and the like.
The plant polyene phenol, the diethylene triamine and the triethylene tetramine are used as curing agents, wherein the plant polyene phenol is a renewable natural phenol mixture, and the diethylene triamine and the triethylene tetramine are products obtained by high-temperature polymerization reaction for 6 hours at the temperature of 100-120 ℃.
A preparation method of graphene modified fluorosilicone anticorrosive wear-resistant paint comprises the following steps:
s1, firstly, adding the mixed epoxy resin, the wear-resistant filler and the nano graphene into a stirring tank, stirring at the speed of 1500r/min, simultaneously sequentially adding the mixed solvent and the silane coupling agent which are prepared in proportion while stirring, stirring and dispersing for 20min, then grinding to the fineness of 15-20 um by using a sand mill, filtering and discharging to obtain a component A;
s2, adding plant polyene phenol, diethylenetriamine and triethylenetetramine into a preparation tank, dispersing at a stirring speed of 1500r/min for 20min to be uniform, filtering and discharging to obtain a component B;
and S3, mixing the prepared component A and the component B according to a certain mass ratio, and uniformly stirring to obtain the graphene modified fluorosilicone anticorrosive wear-resistant coating.
After the prepared coating is coated, the coating is tested, and the coating is worn for 1000 circles by using a 1kg load on a wear tester, so that the mass loss, the pencil hardness, the adhesive force and the impact resistance are tested, and the test results are as follows: the mass loss is 1.2mg, the pencil hardness is 2H, the adhesive force is grade 1, and the impact resistance is more than or equal to 50kg cm.
Example two:
the embodiment of the invention provides a graphene modified fluorosilicone anticorrosive wear-resistant coating, which comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 101.8: 37, the component A is composed of the following raw materials in parts by mass: 55 parts of mixed epoxy resin, 31.5 parts of wear-resistant filler, 1.3 parts of nano graphene, 5 parts of silane coupling agent and 9 parts of mixed solvent, wherein the graphene can be filled into holes and defects of the coating due to the small size of the graphene, so that the coating is more compact, micromolecule corrosion media are prevented and delayed from being immersed into a metal matrix to a certain extent, the physical isolation and shielding effects of the coating are enhanced, the corrosion resistance of the coating is improved, the graphene is of an extremely thin lamellar structure and is stacked layer by layer in the coating to form a compact physical isolation layer, the path of the micromolecule corrosion media entering the coating is more complex, the passing time is greatly prolonged, the corrosion time is prolonged while the physical shielding effect is achieved, the corrosion resistance is achieved, and the component B is generated by the following raw materials in parts by mass through an addition reaction: the paint is suitable for steel structure anticorrosion priming paint of modern engineering buildings such as offshore oil drilling platforms, bridges, ships, railway vehicles, automobiles, airplanes, containers, oil pipelines, related power transmission and transformation equipment, chemical equipment, chimneys of power plants, mine equipment and the like, and has excellent adhesive force and anticorrosion protection effect.
The mixed epoxy resin is a mixture of bisphenol A epoxy resin, novolac epoxy resin and epoxy acrylate resin, and the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin to the epoxy acrylate resin is 45: 5: 5, the molecular weight of the bisphenol A epoxy resin is 3000-8000, the molecular weight of the novolac epoxy resin is 5000-10000, and the molecular weight of the epoxy acrylate resin is 5000-8000.
The wear-resistant filler is a mixture of calcined oxide, pyroxene powder and sericite, and the mass ratio of the calcined oxide to the pyroxene powder to the sericite is 16.5: 7.5: 7.5, the calcined oxide can be aluminum oxide, zinc oxide and the like, so the calcined oxide, the pyroxene powder and the sericite have the effect of improving the wear resistance, and the wear resistance of the coating can be greatly improved by matching the wear-resistant filler and the graphene.
The mixed solvent is a mixture of propylene glycol methyl ether and diethylene glycol butyl ether acetate, and the mass ratio of the propylene glycol methyl ether to the diethylene glycol butyl ether acetate is 7.5: 1.5.
the silane coupling agent is a silane coupling agent containing isocyanate groups, has an excellent promoting effect on adhesion, and alkyl and aryl silanes in the molecular structure are used for improving the comprehensive effects of coating gloss, hiding power, miscibility, wettability and dispersibility of the pigment and the like.
The plant polyene phenol, the diethylene triamine and the triethylene tetramine are used as curing agents, wherein the plant polyene phenol is a renewable natural phenol mixture, and the diethylene triamine and the triethylene tetramine are products obtained by high-temperature polymerization reaction for 6 hours at the temperature of 100-120 ℃.
A preparation method of a graphene modified fluorosilicone anticorrosive wear-resistant coating, which is the same as the first embodiment.
After the prepared coating is coated, the coating is tested, and the coating is worn for 1000 circles by using a 1kg load on a wear tester, so that the mass loss, the pencil hardness, the adhesive force and the impact resistance are tested, and the test results are as follows: the mass loss is 0.8mg, the pencil hardness is 4H, the adhesive force is grade 1, and the impact resistance is more than or equal to 40kg cm.
Example three:
the embodiment of the invention provides a graphene modified fluorosilicone anticorrosive wear-resistant coating, which comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 102.5: 35, the component A is composed of the following raw materials in parts by mass: 68.5 parts of mixed epoxy resin, 27.5 parts of wear-resistant filler, 1.5 parts of nano graphene, 1 part of silane coupling agent and 4 parts of mixed solvent, wherein the graphene can be filled into holes and defects of a coating due to the small size of the graphene, so that the coating is more compact, micromolecule corrosive media are prevented and delayed from immersing into a metal matrix to a certain extent, the physical isolation and shielding effects of the coating are enhanced, and the corrosion resistance of the coating is improved. The paint is suitable for steel structure anticorrosion priming paint of modern engineering buildings such as offshore oil drilling platforms, bridges, ships, railway vehicles, automobiles, airplanes, containers, oil pipelines, related power transmission and transformation equipment, chemical equipment, power plant chimneys, mine equipment and the like, and has excellent adhesive force and anticorrosion protection effect.
The mixed epoxy resin is a mixture of bisphenol A epoxy resin, novolac epoxy resin and epoxy acrylate resin, and the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin to the epoxy acrylate resin is 52: 8.5: the molecular weight of the bisphenol A epoxy resin is 3000-8000, the molecular weight of the novolac epoxy resin is 5000-10000, and the molecular weight of the epoxy acrylate resin is 5000-8000.
The wear-resistant filler is a mixture of calcined oxide, pyroxene powder and sericite, and the mass ratio of the calcined oxide to the pyroxene powder to the sericite is 10: 8: 9.5, the calcined oxide can be aluminum oxide, zinc oxide and the like, so the calcined oxide, the pyroxene powder and the sericite have the effect of improving the wear resistance, and the wear resistance of the coating can be greatly improved by matching the wear-resistant filler and the graphene.
The mixed solvent is a mixture of propylene glycol methyl ether and diethylene glycol butyl ether acetate, and the mass ratio of the propylene glycol methyl ether to the diethylene glycol butyl ether acetate is 2: 2.
the silane coupling agent is a silane coupling agent containing isocyanate groups, has an excellent promoting effect on adhesion, and alkyl and aryl silanes in the molecular structure are used for improving the comprehensive effects of coating gloss, hiding power, miscibility, wettability and dispersibility of the pigment and the like.
The plant polyene phenol, the diethylene triamine and the triethylene tetramine are used as curing agents, wherein the plant polyene phenol is a renewable natural phenol mixture, and the diethylene triamine and the triethylene tetramine are products obtained by high-temperature polymerization reaction for 6 hours at the temperature of 100-120 ℃.
A preparation method of a graphene modified fluorosilicone anticorrosive wear-resistant coating, which is the same as the first embodiment.
After the prepared coating is coated, the coating is tested, and the coating is worn for 1000 circles by using a 1kg load on a wear tester, so that the mass loss, the pencil hardness, the adhesive force and the impact resistance are tested, and the test results are as follows: the mass loss is 3mg, the pencil hardness is 3H, the adhesive force is grade 1, and the impact resistance is more than 50kg cm.
Example four:
the embodiment of the invention provides a graphene modified fluorosilicone anticorrosive wear-resistant coating, which comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 101.5: 48, the component A is composed of the following raw materials in parts by mass: 54 parts of mixed epoxy resin, 41.5 parts of wear-resistant filler, 1.5 parts of nano graphene, 1.5 parts of silane coupling agent and 3 parts of mixed solvent, wherein the graphene can be filled into holes and defects of the coating due to the small size of the graphene, so that the coating is more compact, micromolecule corrosive media are prevented and delayed from immersing into a metal matrix to a certain extent, the physical isolation and shielding effects of the coating are enhanced, and the corrosion resistance of the coating is improved. 11.5 parts of plant polyene phenol, 11.5 parts of diethylenetriamine and 25 parts of triethylenetetramine, wherein the plant polyene phenol is a renewable natural phenol mixture, has rich and easily obtained sources, low price, no toxicity and no odor, can be matched with various monomers and resins to prepare a coating, an adhesive, an anti-friction material, a surfactant and the like with good performance, and the prepared coating is suitable for steel structure anticorrosion primers of modern engineering buildings such as offshore oil drilling platforms, bridges, ships, railway vehicles, automobiles, airplanes, containers, oil pipelines, related power transmission and transformation equipment, chemical equipment, power plant chimneys, mine equipment and the like and has excellent adhesive force and anticorrosion protection effect.
The mixed epoxy resin is a mixture of bisphenol A epoxy resin, novolac epoxy resin and epoxy acrylate resin, and the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin to the epoxy acrylate resin is 42: 6: 6, the molecular weight of the bisphenol A epoxy resin is 3000-8000, the molecular weight of the novolac epoxy resin is 5000-10000, and the molecular weight of the epoxy acrylate resin is 5000-8000.
The wear-resistant filler is a mixture of calcined oxide, pyroxene powder and sericite, and the mass ratio of the calcined oxide to the pyroxene powder to the sericite is 18.5: 9.5: 13.5, the calcined oxide can be aluminum oxide, zinc oxide and the like, so the calcined oxide, the pyroxene powder and the sericite have the effect of improving the wear resistance, and the wear resistance of the coating can be greatly improved by matching the wear-resistant filler and the graphene.
The mixed solvent is a mixture of propylene glycol methyl ether and diethylene glycol butyl ether acetate, and the mass ratio of the propylene glycol methyl ether to the diethylene glycol butyl ether acetate is 2: 1.
the silane coupling agent is a silane coupling agent containing isocyanate groups, has an excellent promoting effect on adhesion, and alkyl and aryl silanes in the molecular structure are used for improving the comprehensive effects of coating gloss, hiding power, miscibility, wettability and dispersibility of the pigment and the like.
The plant polyene phenol, the diethylene triamine and the triethylene tetramine are used as curing agents, wherein the plant polyene phenol is a renewable natural phenol mixture, and the diethylene triamine and the triethylene tetramine are products obtained by high-temperature polymerization reaction for 6 hours at the temperature of 100-120 ℃.
A preparation method of a graphene modified fluorosilicone anticorrosive wear-resistant coating, which is the same as the first embodiment.
After the prepared coating is coated, the coating is tested, and the coating is worn for 1000 circles by using a 1kg load on a wear tester, so that the mass loss, the pencil hardness, the adhesive force and the impact resistance are tested, and the test results are as follows: the mass loss is 4.5mg, the pencil hardness is 2H, the adhesive force is grade 1, and the impact resistance is more than or equal to 45kg cm.
Example five:
the embodiment of the invention provides a graphene modified fluorosilicone anticorrosive wear-resistant coating, which comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 100.8: 37, the component A is composed of the following raw materials in parts by mass: 45 parts of mixed epoxy resin, 47.5 parts of wear-resistant filler, 0.8 part of nano graphene, 3 parts of silane coupling agent and 4.5 parts of mixed solvent, wherein the graphene can be filled into holes and defects of the coating due to the small size of the graphene, so that the coating is more compact, micromolecule corrosive media are prevented and delayed from immersing into a metal matrix to a certain extent, the physical isolation and shielding effects of the coating are enhanced, and the corrosion resistance of the coating is improved. The paint is suitable for steel structure anticorrosion priming paint of modern engineering buildings such as offshore oil drilling platforms, bridges, ships, railway vehicles, automobiles, airplanes, containers, oil pipelines, related power transmission and transformation equipment, chemical equipment, chimneys of power plants, mine equipment and the like, and has excellent adhesive force and anticorrosion protection effect.
The mixed epoxy resin is a mixture of bisphenol A epoxy resin, novolac epoxy resin and epoxy acrylate resin, and the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin to the epoxy acrylate resin is 36.5: 4.5: the molecular weight of the bisphenol A epoxy resin is 3000-8000, the molecular weight of the novolac epoxy resin is 5000-10000, and the molecular weight of the epoxy acrylate resin is 5000-8000.
The wear-resistant filler is a mixture of calcined oxide, pyroxene powder and sericite, and the mass ratio of the calcined oxide to the pyroxene powder to the sericite is 19.5: 12.5: 15.5, the calcined oxide can be aluminum oxide, zinc oxide and the like, so the calcined oxide, the pyroxene powder and the sericite have the effect of improving the wear resistance, and the wear resistance of the coating can be greatly improved by matching the wear-resistant filler and the graphene.
The mixed solvent is a mixture of propylene glycol methyl ether and diethylene glycol butyl ether acetate, and the mass ratio of the propylene glycol methyl ether to the diethylene glycol butyl ether acetate is 3: 1.5.
the silane coupling agent is a silane coupling agent containing isocyanate groups, has an excellent promoting effect on adhesion, and alkyl and aryl silanes in the molecular structure are used for improving the comprehensive effects of coating gloss, hiding power, miscibility, wettability and dispersibility of the pigment and the like.
The plant polyene phenol, the diethylene triamine and the triethylene tetramine are used as curing agents, wherein the plant polyene phenol is a renewable natural phenol mixture, and the diethylene triamine and the triethylene tetramine are products obtained by high-temperature polymerization reaction for 6 hours at the temperature of 100-120 ℃.
A preparation method of a graphene modified fluorosilicone anticorrosive wear-resistant coating, which is the same as the first embodiment.
After the prepared coating is coated, the coating is tested, and the coating is worn for 1000 circles by using a 1kg load on a wear tester, so that the mass loss, the pencil hardness, the adhesive force and the impact resistance are tested, and the test results are as follows: the mass loss is 4.2mg, the pencil hardness is 2H, the adhesive force is grade 1, and the impact resistance is more than or equal to 60kg cm.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The graphene modified fluorosilicone anticorrosive wear-resistant coating is characterized in that: the paint comprises a component A and a component B, wherein the mass ratio of the component A to the component B is (95-105): (35-50), wherein the component A is prepared from the following raw materials in parts by mass: 32.5-68.5 parts of mixed epoxy resin, 25-56 parts of wear-resistant filler, 0.5-2 parts of nano graphene, 1-5 parts of silane coupling agent and 2-10 parts of mixed solvent, wherein the component B is generated by the following raw materials in parts by mass through addition reaction: 8.5 to 12.5 parts of vegetable polyene phenol, 8.5 to 12.5 parts of diethylene triamine and 15 to 25 parts of triethylene tetramine.
2. The graphene modified fluorosilicone anticorrosive wear-resistant coating as claimed in claim 1, wherein: the mixed epoxy resin is a mixture of bisphenol A epoxy resin, novolac epoxy resin and epoxy acrylate resin, and the mass ratio of the bisphenol A epoxy resin to the novolac epoxy resin to the epoxy acrylate resin is (25-52): (4.5-8.5): (3-8), the molecular weight of the bisphenol A epoxy resin is 3000-8000, the molecular weight of the novolac epoxy resin is 5000-10000, and the molecular weight of the epoxy acrylate resin is 5000-8000.
3. The graphene modified fluorosilicone anticorrosive wear-resistant coating as claimed in claim 1, wherein: the wear-resistant filler is a mixture of calcined oxide, pyroxene powder and sericite, and the mass ratio of the calcined oxide to the pyroxene powder to the sericite is (10-28): (7.5-12.5): (7.5-15.5).
4. The graphene modified fluorosilicone anticorrosive wear-resistant coating as claimed in claim 1, wherein: the mixed solvent is a mixture of propylene glycol methyl ether and diethylene glycol butyl ether acetate, and the mass ratio of the propylene glycol methyl ether to the diethylene glycol butyl ether acetate is (2-7.5): (1-2).
5. The graphene modified fluorosilicone anticorrosive wear-resistant coating as claimed in claim 1, wherein: the silane coupling agent refers to a silane coupling agent containing an isocyanate group.
6. The graphene modified fluorosilicone anticorrosive wear-resistant coating as claimed in claim 1, wherein: the plant polyene phenol, the diethylene triamine and the triethylene tetramine are all used as curing agents, wherein the plant polyene phenol is a renewable natural phenol mixture, and the diethylene triamine and the triethylene tetramine are all products obtained by high-temperature polymerization reaction for 6 hours at the temperature of 100-120 ℃.
7. The preparation method of the graphene modified fluorosilicone anticorrosive wear-resistant coating according to claim 1, characterized in that: the method comprises the following steps:
s1, firstly, adding the mixed epoxy resin, the wear-resistant filler and the nano graphene into a stirring tank, stirring at the speed of 1500-1800 r/min, simultaneously adding the mixed solvent and the silane coupling agent which are prepared in proportion in sequence while stirring, stirring and dispersing for 20-30 min, then grinding to the fineness of 15-20 um by using a sand mill, filtering and discharging to obtain a component A;
s2, adding plant polyene phenol, diethylenetriamine and triethylenetetramine into a blending tank, dispersing at a stirring speed of 1200-1600 r/min for 10-20 min until the mixture is uniform, filtering and discharging to obtain a component B;
and S3, mixing the prepared component A and the component B according to a certain mass ratio, and uniformly stirring to obtain the graphene modified fluorosilicone anticorrosive wear-resistant coating.
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