CN117285832A - A graphene-modified heavy-duty anti-corrosion material and its application - Google Patents
A graphene-modified heavy-duty anti-corrosion material and its application Download PDFInfo
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Abstract
本发明提供了一种石墨烯改性重防腐材料及其应用，涉及防腐材料技术领域，所述石墨烯改性重防腐材料包括依次设置于待防腐体表面的石墨烯改性的无机富锌底漆、固含量50％‑70％的环氧封闭漆、固含量50％‑70％的环氧云铁中间漆以及聚硅氧烷面漆，其中所述无机富锌底漆、所述环氧封闭漆、所述环氧云铁中间漆以及所述聚硅氧烷面漆中所有粉体材料均经过硅烷改性处理，且所述无机富锌底漆、所述环氧封闭漆、所述环氧云铁中间漆中均含有稀土螯合剂。本发明石墨烯改性重防腐材料含有低VOCs、优良的耐盐雾性能、耐老化性能以及耐磨性能。
The invention provides a graphene-modified heavy-duty anti-corrosion material and its application, and relates to the technical field of anti-corrosion materials. The graphene-modified heavy-duty anti-corrosion material includes graphene-modified inorganic zinc-rich substrates sequentially arranged on the surface of a body to be anti-corrosion. paint, an epoxy sealer with a solid content of 50%-70%, an epoxy mica intermediate paint with a solid content of 50%-70%, and a polysiloxane topcoat, wherein the inorganic zinc-rich primer, the epoxy All powder materials in the sealing paint, the epoxy mica intermediate paint and the polysiloxane topcoat have been silane modified, and the inorganic zinc-rich primer, the epoxy sealing paint, the Epoxy mica iron intermediate paint contains rare earth chelating agents. The graphene-modified heavy-duty anti-corrosion material of the invention contains low VOCs, excellent salt spray resistance, aging resistance and wear resistance.
Description
Technical Field
The invention relates to the technical field of anti-corrosion materials, in particular to a graphene modified heavy anti-corrosion material and application thereof.
Background
Steel construction buildings, pipelines or storage tanks such as bridges and the like often suffer from damages caused by various factors such as oxidation, corrosion, fatigue and the like, and economic and safety losses are caused. Therefore, the corrosion prevention technology is very important for long-term use and maintenance of steel-structure buildings, pipelines or storage tanks such as bridges. The conventional corrosion prevention method generally adopts organic solvents containing VOCs (volatile organic compounds) to coat the heavy corrosion prevention coating, and although the heavy corrosion prevention coating has a certain corrosion prevention effect, the chemical substances can cause serious harm to the environment and human health, so that a heavy corrosion prevention material which can meet the corrosion prevention requirement, has low cost, is environment-friendly and has long service life is urgently needed.
Disclosure of Invention
The invention solves the problems that the existing heavy anti-corrosion coating contains volatile organic compounds, is easy to cause serious harm to the environment and human health, and has high cost and short service life.
In order to solve the problems, the invention provides a graphene modified heavy anti-corrosion material, which comprises a graphene modified inorganic zinc-rich primer, an epoxy sealing paint with the solid content of 50-70%, an epoxy cloud iron intermediate paint with the solid content of 50-70% and a polysiloxane finish, wherein all powder materials in the inorganic zinc-rich primer, the epoxy sealing paint, the epoxy cloud iron intermediate paint and the polysiloxane finish are subjected to silane modification treatment, and the inorganic zinc-rich primer, the epoxy sealing paint and the epoxy cloud iron intermediate paint all contain rare earth chelating agents.
Optionally, the method of silane modification treatment comprises: adding the powder material into deionized water, ultrasonically cleaning for 25-35 min, adding into ethanol solution of silane coupling agent with mass fraction of 5%, sealing, placing on a magnetic stirrer with constant temperature of 80 ℃ for continuously stirring for 2.5-3.5 h, and carrying out suction filtration, washing and drying to constant weight to obtain the modified powder material.
Alternatively, the silane coupling agent includes one of methyltrimethoxysilane, phenyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, and ethyltriethoxysilane.
Optionally, the inorganic zinc-rich primer comprises the following components in weight: 20% of tetraethoxysilane, 3% of water, 7% of propylene glycol methyl ether, 5-7% of phosphorus iron powder, 2% of titanium oxide, 1% of silicon carbide, 3% of cloud iron powder, 2% of boron nitride, 2% of polyvinyl butyral, 0.1-0.5% of REC-1 type rare earth ytterbium chelate, 0.1-0.5% of REC-2 type rare earth yttrium chelate, 0.5-3% of modified graphene, 62.5-67.8% of zinc powder, 0.5% of zinc chloride, 0.5% of stannous chloride and 1% of silver nitrate.
Optionally, the preparation method of the modified graphene comprises the following steps: and (3) ultrasonically cleaning graphene in ethanol for 25-35 minutes, dispersing in DMF solvent, ultrasonically stirring for 10-20 minutes to obtain a dispersion liquid, adding a siloxane coupling agent with the mass fraction of 5% into the dispersion liquid, stirring and heating to 90-100 ℃ for reaction for 3 hours, and centrifuging and washing to obtain the siloxane modified graphene.
Optionally, the epoxy sealer comprises by weight: 50% of epoxy resin, 5-20% of alumina, 1-5% of flaky titanium oxide, 5-10% of ferric oxide, 1.5% of DMP-30 accelerator, 2-8% of reactive diluent, 25-27% of polyamide curing agent, 0.1-0.5% of REC-1 type rare earth ytterbium chelate and 0.1-0.5% of REC-2 type rare earth yttrium chelate.
Optionally, the epoxy cloud iron intermediate paint comprises the following components in parts by weight: 30-40% of epoxy resin, 10-20% of cloud iron powder, 7% of talcum powder, 7-10% of aluminum oxide, 3-5% of precipitated barium sulfate, 5-7% of ferric oxide, 1.5% of DMP-30 accelerator, 2-5% of active diluent solvent, 20-22% of polyamide curing agent, 0.1-0.5% of REC-1 type rare earth ytterbium chelate and 0.1-0.5% of REC-2 type rare earth yttrium chelate.
Optionally, the polysiloxane finish comprises the following components in parts by weight: 40% of polysiloxane resin, 30% of organosilicon modified acrylic resin, 15% of isocyanate crosslinking agent, 2% of glass beads, 13% of titanium oxide, 2% of flaky titanium oxide, 2% of mica powder, 2% of boron nitride powder, 0.1-1% of modified graphene, 4% of propylene glycol methyl ether, 4% of isopropanol and 3% of ethanol.
Optionally, the thickness of the inorganic zinc-rich primer is 74-76 mu m, the thickness of the epoxy sealing paint is 64-66 mu m, the thickness of the epoxy cloud iron intermediate paint is 119-121 mu m, and the thickness of the polysiloxane finishing paint is 119-121 mu m.
Compared with the prior art, the graphene modified heavy-duty anticorrosive material disclosed by the invention consists of the graphene modified inorganic zinc-rich primer, the high-solid-content epoxy sealing paint, the high-solid-content epoxy cloud iron intermediate paint and the polysiloxane finish paint, wherein the modified graphene is added into the inorganic zinc-rich primer to reduce the zinc powder content, so that the cost is reduced, the strength, the hardness and the wear resistance of the heavy-duty anticorrosive coating are obviously improved, and the service life of the coating is prolonged. In addition, by combining the rare earth chelating agent, the whole graphene modified heavy anti-corrosion material can timely complex ferrous ions generated by corrosion, a layer of hard, compact and difficult-to-drop protective layer is formed on the surface of the steel structure, so that the steel structure is effectively prevented from being corroded and damaged by factors such as atmosphere, water, soil and the like, and the service life of the steel structure is prolonged. In addition, all powder materials in the inorganic zinc-rich primer, the epoxy sealing paint, the epoxy cloud iron intermediate paint and the polysiloxane finish paint are subjected to silane modification treatment, so that the oil absorption is reduced, the emission of harmful gas is greatly reduced, the modern environmental protection requirements are met, and the application prospect is wide.
In order to solve the problems, the invention also provides application of the graphene modified heavy anti-corrosion material, which is characterized in that the graphene modified heavy anti-corrosion material is coated on the surface of a steel structure building, a pipeline or a storage tank for anti-corrosion protection.
The application of the graphene modified heavy-duty anticorrosive material disclosed by the invention has the same advantages as the graphene modified heavy-duty anticorrosive material compared with the prior art, and is not repeated here.
Drawings
Fig. 1 is a schematic structural diagram of a graphene modified heavy-duty anticorrosive material according to an embodiment of the present invention.
Description of the reference numerals
1-inorganic zinc-rich primer, 2-epoxy sealing paint, 3-epoxy cloud iron intermediate paint and 4-polysiloxane finish.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and thoroughly described below with reference to the accompanying drawings.
The description of the term "some embodiments" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same implementations or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
As shown in fig. 1, the embodiment of the invention provides a graphene modified heavy-duty anticorrosive material, which comprises a graphene modified inorganic zinc-rich primer 1, an epoxy sealing paint 2 with a solid content of 50% -70%, an epoxy cloud iron intermediate paint 3 with a solid content of 50% -70% and a polysiloxane finish 4, which are sequentially arranged on the surface of a body to be anticorrosive, wherein all powder materials in the inorganic zinc-rich primer 1, the epoxy sealing paint 2, the epoxy cloud iron intermediate paint 3 and the polysiloxane finish 4 are subjected to silane modification treatment, and the inorganic zinc-rich primer 1, the epoxy sealing paint 2 and the epoxy cloud iron intermediate paint 3 all contain rare earth chelating agents.
The graphene modified heavy-duty anticorrosive material comprises a graphene modified inorganic zinc-rich primer 1, a high-solid-content epoxy sealing paint 2, a high-solid-content epoxy cloud iron intermediate paint 3 and a polysiloxane finish paint 4, wherein modified graphene is added into the inorganic zinc-rich primer 1 to reduce zinc powder content, so that cost is reduced, meanwhile, the strength, hardness and wear resistance of the heavy-duty anticorrosive coating are obviously improved, and the service life of the coating is prolonged. In addition, by combining the rare earth chelating agent, the whole graphene modified heavy anti-corrosion material can timely complex ferrous ions generated by corrosion, a layer of hard, compact and difficult-to-drop protective layer is formed on the surface of the steel structure, so that the steel structure is effectively prevented from being corroded and damaged by factors such as atmosphere, water, soil and the like, and the service life of the steel structure is prolonged. In addition, all powder materials in the inorganic zinc-rich primer 1, the epoxy sealing paint 2, the epoxy cloud iron intermediate paint 3 and the polysiloxane finish paint 4 are subjected to silane modification treatment, so that the oil absorption is reduced, the emission of harmful gas is greatly reduced, the modern environmental protection requirements are met, and the application prospect is wide.
It should be noted that, the rare earth chelating agent in this embodiment is a rare earth ytterbium chelate or a rare earth yttrium chelate, which can timely complex ferrous ions generated by corrosion in the coating, block further corrosion, and promote the reaction rate of the epoxy resin and the polyamide curing agent, so as to promote the coating to cure more rapidly.
It should be further noted that, the epoxy sealing paint 2 in this embodiment plays a role in sealing and protecting in the corrosion protection system, and can form a hard protection layer to prevent corrosion factors from further corroding and invading, so as to effectively cover defects and cracks of the inorganic zinc-rich primer 1, improve the sealing performance of the coating, prevent permeation of substances such as moisture, oxygen and the like, and further prolong the service life of the coating.
In some specific embodiments, the method of silane modification treatment comprises: adding the powder material into deionized water, ultrasonically cleaning for 25-35 min, adding into ethanol solution of silane coupling agent with mass fraction of 5%, sealing, placing on a magnetic stirrer with constant temperature of 80 ℃ for continuously stirring for 2.5-3.5 h, and carrying out suction filtration, washing and drying to constant weight to obtain the modified powder material. The method is simple, and the powder with low oil absorption is formed after silane modification treatment, so that the emission of harmful gas is greatly reduced, and the requirements of modern environmental protection are met.
In some preferred embodiments, the silane coupling agent comprises one of methyltrimethoxysilane, phenyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, and ethyltriethoxysilane. The powder material is modified by the silane coupling agent, the operation is simple, the material is easy to obtain, and the modification effect is good. Wherein the methyltrimethoxysilane coupling agent can enable the coating to have good adhesive force and improve weather resistance; the phenyltrimethoxysilane coupling agent can enable the coating to improve chemical resistance and enhance water resistance; the methyltriethoxysilane coupling agent can improve the smoothness and enhance the high temperature resistance of the coating; the ethyltrimethoxysilane coupling agent can enable the coating to increase flexibility; the ethyltriethoxysilane coupling agent enables the coating to obtain excellent abrasion resistance. The adhesive force, chemical resistance, weather resistance, water resistance, lubricity, high temperature resistance, flexibility and wear resistance of the coating can be improved by adopting a proper silane coupling agent, so that the corrosion resistance and the service life of the bridge are effectively improved.
In some specific embodiments, the inorganic zinc-rich primer 1 comprises by weight: 20% of ethyl orthosilicate, 3% of water, 7% of propylene glycol methyl ether (PM), 5-7% of phosphorus iron powder, 2% of titanium oxide, 1% of silicon carbide, 3% of cloud iron powder, 2% of boron nitride, 2% of polyvinyl butyral, 0.1-0.5% of REC-1 type rare earth ytterbium chelate, 0.1-0.5% of REC-2 type rare earth yttrium chelate, 0.5-3% of modified graphene, 62.5-67.8% of zinc powder, 0.5% of zinc chloride, 0.5% of stannous chloride and 1% of silver nitrate.
In this example, ethyl orthosilicate is an organosilicon compound that can provide adhesion and durability of the coating as a base material; the ferrophosphorus powder has the anti-corrosion effect in the coating, can improve the durability and the anti-corrosion performance of the coating, the zinc powder is used as a barrier layer in the coating, can provide excellent anti-rust performance and anti-corrosion performance, and the titanium oxide is used as a white pigment in the coating, so as to provide the covering power, the glossiness and the weather resistance of the coating; silicon carbide is a filler, which can enhance the hardness, wear resistance and high temperature resistance of the coating; zinc chloride, stannous chloride and silver nitrate are used as catalysts or reaction aids, so that the curing speed and specific chemical reaction of the coating can be adjusted; polyvinyl butyral is an adhesive commonly used in coatings as a dispersant and thickener to aid in the uniform dispersion of other ingredients.
In some preferred embodiments, the method for preparing the modified graphene comprises: and (3) ultrasonically cleaning graphene in ethanol for 25-35 minutes, dispersing in DMF solvent, ultrasonically stirring for 10-20 minutes to obtain a dispersion liquid, adding a siloxane coupling agent with the mass fraction of 5% into the dispersion liquid, stirring and heating to 90-100 ℃ for reaction for 3 hours, and centrifuging and washing to obtain the siloxane modified graphene.
In some preferred embodiments, the graphene is a graphene nanoplatelet, wherein the graphene nanoplatelet is a two-dimensional material that can improve the electrical conductivity, mechanical strength, and corrosion resistance of the coating.
In some specific embodiments, the epoxy sealer 2 comprises by weight: 50% of epoxy resin, 5-20% of alumina, 1-5% of flaky titanium oxide, 5-10% of ferric oxide, 1.5% of DMP-30 accelerator, 2-8% of reactive diluent, 25-27% of polyamide curing agent, 0.1-0.5% of REC-1 type rare earth ytterbium chelate and 0.1-0.5% of REC-2 type rare earth yttrium chelate.
In this example, the epoxy resin is used as a base material to provide excellent adhesion and protection properties in the coating, the reactive diluent is a glycidyl ether, preferably ethylene glycol diglycidyl ether, to adjust the viscosity of the coating to facilitate the construction and coating process, and the polyamide curing agent reacts with the epoxy resin to promote curing and hardening of the coating.
In some specific embodiments, the epoxy cloud iron intermediate paint 3 comprises, by weight: 30-40% of epoxy resin, 10-20% of cloud iron powder, 7% of talcum powder, 7-10% of aluminum oxide, 3-5% of precipitated barium sulfate, 5-7% of ferric oxide, 1.5% of DMP-30 accelerator, 2-5% of active diluent solvent, 20-22% of polyamide curing agent, 0.1-0.5% of REC-1 type rare earth ytterbium chelate and 0.1-0.5% of REC-2 type rare earth yttrium chelate.
In the embodiment, the aluminum oxide is used as a filler in the coating, has the performances of wear resistance, high temperature resistance and chemical corrosion resistance, the ferric oxide has the color and the covering property in the coating, the color and the aesthetic property of the coating can be provided, and the talcum powder is used as the filler in the coating, so that the smoothness, the wear resistance and the corrosion resistance of the coating can be improved; precipitated barium sulfate is used as a barrier layer in the coating, and can provide excellent flame retardant property and corrosion resistance; rouge is an iron-containing pigment commonly used in coatings to provide color and weatherability.
In some specific embodiments, the polysiloxane topcoat 4 comprises, by weight: 40% of polysiloxane resin, 30% of organosilicon modified acrylic resin, 15% of isocyanate crosslinking agent, 2% of glass beads, 13% of titanium oxide, 2% of flaky titanium oxide, 2% of mica powder, 2% of boron nitride powder, 0.1-1% of modified graphene, 4% of propylene glycol methyl ether, 4% of isopropanol and 3% of ethanol.
In this example, the polysiloxane resin is an organosilicon compound that increases the weatherability, stain resistance and chemical resistance of the coating; the organosilicon modified acrylic resin is a toughening agent, and can improve the flexibility and impact resistance of the coating; the mica powder is used as a filler in the coating, so that the heat resistance, the electrical insulation property and the fireproof performance of the coating can be provided; the boron nitride powder has high hardness and wear resistance in the coating, and can provide the wear resistance and corrosion resistance of the coating; glass beads are commonly used as fillers, which can increase the glossiness, uniformity and reflectivity of the coating; isocyanate crosslinking agents are a chemical substance used to cure the coating, allowing for hardening and durability of the coating; propylene glycol methyl ether and isopropanol are used as solvents for adjusting the viscosity and fluidity of the coating.
In some specific embodiments, the inorganic zinc-rich primer 1 is 1 lane, the thickness is 74-76 μm, the epoxy sealer 2 is 1 lane, the thickness is 64-66 μm, the epoxy cloud iron intermediate paint 3 is 1 lane, the thickness is 119-121 μm, the polysiloxane topcoat 4 is 1 lane, and the thickness is 119-121 μm.
The powder materials in the graphene modified heavy-duty anticorrosive material in this embodiment include alumina, titanium oxide, iron oxide, precipitated barium sulfate, mica powder, cloud iron powder, silicon carbide, talcum powder, boron nitride powder and ferrophosphorus powder, and are easy to paint. In addition, in the embodiment, the graphene nanoplatelets, the cloud iron powder, the titanium oxide and the boron nitride powder are all sheet-shaped, so that reflection is increased, energy addition of the finish paint is reduced, and weather resistance is improved.
In addition, in the graphene modified heavy anti-corrosion material, ferrophosphorus powder and cloud iron powder can provide anti-corrosion performance in the inorganic zinc-rich primer 1, so that a compact anti-corrosion layer is formed. These corrosion protection components, in combination with the alumina in the epoxy sealer 2, can increase the wear and corrosion resistance of the coating. While the titanium oxide in the epoxy sealer 2 may form a hard protective layer that prevents further attack and intrusion of corrosion factors. The hard protective layer is combined with the ferrophosphorus powder and the cloud iron powder in the inorganic zinc-rich primer 1, so that the corrosion resistance of the coating can be further enhanced. The aluminum oxide and iron oxide in the epoxy sealer 2 can increase the wear and corrosion resistance of the coating. The fillers are combined with the cloud iron powder and the precipitated barium sulfate in the epoxy cloud iron intermediate paint 3, so that the compactness and the barrier property of the coating can be improved, and the anti-corrosion effect of the coating is further enhanced. The flaky titanium oxide in the epoxy sealing paint 2 and the cloud iron powder in the intermediate paint can jointly improve the weather resistance and ultraviolet aging resistance of the coating. This coaction can make the coating more durable, extending the useful life of the coating. The cloud iron powder and talcum powder in the epoxy cloud iron intermediate paint 3 can increase the wear resistance and corrosion resistance of the coating. These fillers, in combination with the silicone resin and the silicone modified acrylic resin in the silicone topcoat 4, can improve the smoothness and durability of the coating while protecting the coating and improving the aesthetics of the coating. The precipitated barium sulfate in the epoxy cloud iron intermediate paint 3 is combined with polysiloxane resin in the polysiloxane finish paint 4, so that the compactness and the barrier property of the coating can be improved, and the permeation resistance and the waterproof performance of the coating are further improved. Through the interaction, the formula and the substances among the inorganic zinc-rich primer 1, the epoxy sealing paint 2, the epoxy cloud iron intermediate paint 3 and the polysiloxane finish 4 can jointly promote the anti-corrosion effect and the service life of the coating. The inorganic zinc rich primer 1 provides an anti-corrosive component, the epoxy sealer 2 forms a hard protective layer, the epoxy cloud iron intermediate paint 3 provides filler and reinforcement, and the polysiloxane topcoat 4 protects the coating and improves aesthetics. The superposition effect of the four-layer coating system ensures that the anti-corrosion system has better anti-corrosion performance and durability.
Therefore, the graphene modified heavy-duty anticorrosive material in the embodiment is composed of the graphene modified inorganic zinc-rich primer 1, the high-solid-content epoxy sealing paint 2, the high-solid-content epoxy cloud iron intermediate paint 3 and the polysiloxane finish paint 4, wherein modified graphene is added into the inorganic zinc-rich primer 1 to reduce zinc powder content, so that cost is reduced, meanwhile, the strength, hardness and wear resistance of the heavy-duty anticorrosive coating are obviously improved, and the service life of the coating is prolonged. In addition, by combining the rare earth chelating agent, the whole graphene modified heavy anti-corrosion material can timely complex ferrous ions generated by corrosion, a layer of hard, compact and difficult-to-drop protective layer is formed on the surface of the steel structure, so that the steel structure is effectively prevented from being corroded and damaged by factors such as atmosphere, water, soil and the like, and the service life of the steel structure is prolonged. In addition, all powder materials in the inorganic zinc-rich primer 1, the epoxy sealing paint 2, the epoxy cloud iron intermediate paint 3 and the polysiloxane finish paint 4 are subjected to silane modification treatment, so that the oil absorption is reduced, the emission of harmful gas is greatly reduced, the modern environmental protection requirements are met, and the application prospect is wide.
The invention also provides an application of the graphene modified heavy-duty anticorrosive material, which is characterized in that the graphene modified heavy-duty anticorrosive material is coated on the surface of a steel structure building, a pipeline or a storage tank for corrosion protection.
The application of the graphene modified heavy-duty anticorrosive material in this embodiment is the same as that of the graphene modified heavy-duty anticorrosive material in comparison with the prior art, and will not be described in detail here.
Example 1
The embodiment provides a graphene modified heavy-duty anticorrosive material, which comprises a graphene modified inorganic zinc-rich primer, an epoxy sealing paint, an epoxy cloud iron intermediate paint and a polysiloxane finish, wherein the graphene modified inorganic zinc-rich primer, the epoxy sealing paint, the epoxy cloud iron intermediate paint and the polysiloxane finish are sequentially arranged on the surface of a body to be anticorrosive, the inorganic zinc-rich primer is 1 track, the epoxy sealing paint is 65 mu m, the epoxy cloud iron intermediate paint is 1 track, the thickness is 120 mu m, and the polysiloxane finish is 1 track and the thickness is 120 mu m.
Specifically, in the present embodiment, the first and second embodiments,
the inorganic zinc-rich primer comprises the following components in parts by weight: 1 part of modified graphene, 40 parts of tetraethoxysilane, 6 parts of water, 14 parts of PM, 4 parts of aluminum oxide, 14 parts of ferrophosphorus powder, 4 parts of titanium oxide, 2 parts of silicon carbide, 6 parts of cloud iron powder, 1 part of REC-1 type rare earth ytterbium chelate, 1 part of REC-2 type rare earth yttrium chelate, 4 parts of boron nitride, 4 parts of polyvinyl butyral, 136 parts of zinc powder, 1 part of zinc chloride, 1 part of stannous chloride and 2 parts of silver nitrate.
The epoxy sealing paint comprises the following components in parts by weight: 100 parts of epoxy resin, 25 parts of aluminum oxide, 6 parts of platy titanium oxide, 15 parts of ferric oxide, 3 parts of DMP-30 accelerator, 10 parts of reactive diluent (ethylene glycol diglycidyl ether), 32 parts of polyamide curing agent, 1 part of REC-1 type rare earth ytterbium chelate and 1 part of REC-2 type rare earth yttrium chelate.
The epoxy cloud iron intermediate paint comprises the following components in parts by weight: 70 parts of epoxy resin, 30 parts of cloud iron powder (flaky ferric oxide), 14 parts of talcum powder, 17 parts of aluminum oxide, 8 parts of precipitated barium sulfate, 12 parts of ferric oxide, 3 parts of DMP-30 accelerator, 7 parts of active diluent solvent (ethylene glycol diglycidyl ether), 42 parts of polyamide curing agent, 1 part of REC-1 type rare earth ytterbium chelate and 1 part of REC-2 type rare earth yttrium chelate.
The polysiloxane finish paint comprises the following components in parts by weight: 80 parts of polysiloxane resin, 60 parts of organosilicon modified acrylic resin, 30 parts of isocyanate crosslinking agent, 4 parts of glass beads, 26 parts of titanium oxide, 4 parts of platy titanium oxide, 4 parts of mica powder, 4 parts of boron nitride powder (platy), 1 part of modified graphene, 8 parts of PM, 8 parts of isopropanol and 6 parts of ethanol.
The preparation method of the inorganic zinc-rich primer comprises the following steps: the preparation method comprises the steps of fully mixing ethyl orthosilicate, boron nitride, zinc powder, ferrophosphorus powder, aluminum oxide, titanium oxide, ferrocloud powder and silicon carbide for 4 hours at the rotating speed of 1000r/min, adding a proper amount of modified graphene, REC-1 type rare earth ytterbium chelate, zinc chloride, stannous chloride and silver nitrate, further stirring and mixing for 1 hour, and finally adding water, PM and polyvinyl butyral, and fully stirring for 1-2 hours at the rotating speed of 1200r/min until uniform slurry is formed.
The preparation method of the modified graphene comprises the following steps: and ultrasonically cleaning the graphene nano-sheets in ethanol for 30 minutes, dispersing in DMF solvent, ultrasonically stirring for 15 minutes to ensure uniform dispersion, adding a siloxane coupling agent with the mass fraction of 5% into the dispersion, keeping stirring and heating to 95 ℃ for reaction for 3 hours, centrifuging at 6000rpm after the reaction is finished, and washing with DMF solvent to obtain the siloxane modified graphene. By adding solvents such as ethanol and DMF, and the like, ultrasonic stirring and the like, the nano-sheets can be better dispersed in the solution, and agglomeration and deposition of the nano-sheets can be effectively avoided. Further adding a siloxane coupling agent to the dispersion and performing a thermal reaction can realize surface modification of the graphene nanoplatelet powder, and the modified graphene nanoplatelet powder does not generate a large amount of VOCs in the preparation process, because the solvent and the coupling agent used in the technology are low in volatility, and the content of the VOCs in the coating material can be reduced. Can provide safer and healthier working environment and reduce the emission of harmful chemical substances in the atmosphere, which has great significance for protecting the health of human bodies and reducing the pollution of the atmosphere.
The preparation method of the epoxy sealing paint comprises the following steps: firstly, fully mixing epoxy resin, aluminum oxide, titanium oxide and ferric oxide for 3 hours at the rotation speed of 800r/min, then adding a DMP-30 accelerator, an active diluent, REC-1 type rare earth ytterbium chelate and REC-2 type rare earth yttrium chelate, further stirring and mixing for 1 hour, and finally adding a polyamide curing agent, and fully stirring for 2 hours at the rotation speed of 1200r/min to form uniform slurry.
The preparation method of the epoxy cloud iron intermediate paint comprises the following steps: firstly, fully mixing epoxy resin, talcum powder, aluminum oxide, cloud iron powder, precipitated barium sulfate and ferric oxide for 3 hours at the rotating speed of 1000r/min, then adding a DMP-30 accelerator, an active diluent, REC-1 type rare earth ytterbium chelate and REC-2 type rare earth yttrium chelate, further stirring and mixing for 1 hour, and finally adding a polyamide curing agent, and fully stirring for 2 hours at the rotating speed of 1500r/min to form uniform slurry.
The preparation method of the polysiloxane finish paint comprises the following steps: the polysiloxane resin, the organosilicon modified acrylic resin, the titanium oxide, the glass beads and the mica powder are fully mixed for 3 hours at the rotation speed of 500r/min, then the modified graphene, the flaky titanium oxide and the flaky boron nitride powder are added and fully mixed for 1 hour at the rotation speed of 800r/min, and finally the isocyanate cross-linking agent, PM, water and ethanol are added and fully stirred for 2-3 hours at the rotation speed of 1200r/min until uniform slurry is formed.
In addition, all the powder materials in the present embodiment are subjected to a silane modification treatment, wherein the silane modification method includes: adding the powder material into deionized water, ultrasonically cleaning for 30 minutes, then adding the powder material into ethanol solution with the mass fraction of 5% of silane coupling agent, sealing, placing the mixture on a magnetic stirrer with the constant temperature of 80 ℃ for continuously stirring for 3 hours, and after the reaction is finished, performing suction filtration and washing for three times to obtain a product, and placing the product in an oven for drying for 12 hours to constant weight to obtain the modified powder filler. Wherein the powder material comprises aluminum oxide, titanium oxide, ferric oxide, precipitated barium sulfate, mica powder, cloud iron powder, silicon carbide, talcum powder, boron nitride powder and phosphorus iron powder.
It should be noted that the graphene nanoplatelets described in this embodiment are from Shanghai Ala Biochemical technologies Co., ltd.
The silane coupling agent is one of methyltrimethoxysilane (Yun Cheng chemical Co., ltd.), phenyltrimethoxysilane (Zhejiang Walsh Xingjingchun materials science Co., ltd.), methyltriethoxysilane (Shandong polymer chemical Co., ltd.), ethyltrimethoxysilane (Qu Fuyi cischemical Co., ltd.), and ethyltriethoxysilane (Qu Fuyi cischemical Co., ltd.).
The polysiloxane resin is SH-023-7 with viscosity of 1000-1200mpa.s, hubei Long Sheng Sihai New Material Co., ltd.
The organosilicon modified acrylic resin is SH-024, the viscosity is 20-120S, the solid content is 50%, hubei long-win four-sea new material Co., ltd.
The isocyanate crosslinking agent is TMAIC-6291, guangzhou Shangxi chemical technology Co., ltd.
Polyamide curing agent with amine value of 200 + -20 (mgKOH/g), viscosity of 2000-4000 mpa.s, jinan Yuanbao Lai chemical technology Co.
REC-1 type rare earth ytterbium chelate and REC-2 type rare earth yttrium chelate are purchased from Texaban materials science and technology Co.Ltd.
Graphene was purchased from north sco nanotechnology limited, su.
DPM-30 promoter was purchased from the chemical technology Co., ltd in sunny days in the North of Henan.
Ethylene glycol diglycidyl ether was purchased from tokyo chemical industry limited.
Example 2
The difference between the embodiment and the embodiment 1 lies in that, the graphene modified heavy-duty anticorrosive material provided in the embodiment includes a graphene modified inorganic zinc-rich primer, an epoxy sealing paint, an epoxy cloud iron intermediate paint and a polysiloxane finish paint, which are sequentially arranged on the surface of a body to be anticorrosive, wherein:
the inorganic zinc-rich primer comprises the following components in parts by weight: 2 parts of modified graphene, 40 parts of tetraethoxysilane, 6 parts of water, 14 parts of PM, 4 parts of aluminum oxide, 13 parts of ferrophosphorus powder, 4 parts of titanium oxide, 2 parts of silicon carbide, 6 parts of cloud iron powder, 1 part of REC-1 type rare earth ytterbium chelate, 1 part of REC-2 type rare earth yttrium chelate, 4 parts of boron nitride, 4 parts of polyvinyl butyral, 134 parts of zinc powder, 1 part of zinc chloride, 1 part of stannous chloride and 2 parts of silver nitrate.
The epoxy sealing paint comprises the following components in parts by weight: 100 parts of epoxy resin, 25 parts of aluminum oxide, 6 parts of platy titanium oxide, 15 parts of ferric oxide, 3 parts of DMP-30 accelerator, 10 parts of reactive diluent (ethylene glycol diglycidyl ether), 32 parts of polyamide curing agent, 1 part of REC-1 type rare earth ytterbium chelate and 1 part of REC-2 type rare earth yttrium chelate.
The epoxy cloud iron intermediate paint comprises the following components in parts by weight: 70 parts of epoxy resin, 30 parts of cloud iron powder (flaky ferric oxide), 14 parts of talcum powder, 17 parts of aluminum oxide, 8 parts of precipitated barium sulfate, 12 parts of ferric oxide, 3 parts of DMP-30 accelerator, 7 parts of active diluent solvent (ethylene glycol diglycidyl ether), 42 parts of polyamide curing agent, 1 part of REC-1 type rare earth ytterbium chelate and 1 part of REC-2 type rare earth yttrium chelate.
The polysiloxane finish paint comprises the following components in parts by weight: 80 parts of polysiloxane resin, 60 parts of organosilicon modified acrylic resin, 30 parts of isocyanate crosslinking agent, 4 parts of glass beads, 26 parts of titanium oxide, 4 parts of platy titanium oxide, 4 parts of mica powder, 4 parts of boron nitride powder (platy), 1 part of modified graphene, 8 parts of PM, 8 parts of isopropanol and 6 parts of ethanol.
Example 3
The difference between the embodiment and the embodiment 1 lies in that, the graphene modified heavy-duty anticorrosive material provided in the embodiment includes a graphene modified inorganic zinc-rich primer, an epoxy sealing paint, an epoxy cloud iron intermediate paint and a polysiloxane finish paint, which are sequentially arranged on the surface of a body to be anticorrosive, wherein:
the inorganic zinc-rich primer comprises the following components in parts by weight: 3 parts of modified graphene, 40 parts of tetraethoxysilane, 6 parts of water, 14 parts of PM, 4 parts of aluminum oxide, 12 parts of ferrophosphorus powder, 4 parts of titanium oxide, 2 parts of silicon carbide, 6 parts of cloud iron powder, 1 part of REC-1 type rare earth ytterbium chelate, 1 part of REC-2 type rare earth yttrium chelate, 4 parts of boron nitride, 4 parts of polyvinyl butyral, 132 parts of zinc powder, 1 part of zinc chloride, 1 part of stannous chloride and 2 parts of silver nitrate.
The epoxy sealing paint comprises the following components in parts by weight: 100 parts of epoxy resin, 25 parts of aluminum oxide, 6 parts of platy titanium oxide, 15 parts of ferric oxide, 3 parts of DMP-30 accelerator, 10 parts of reactive diluent (ethylene glycol diglycidyl ether), 32 parts of polyamide curing agent, 1 part of REC-1 type rare earth ytterbium chelate and 1 part of REC-2 type rare earth yttrium chelate.
The epoxy cloud iron intermediate paint comprises the following components in parts by weight: 70 parts of epoxy resin, 30 parts of cloud iron powder (flaky ferric oxide), 14 parts of talcum powder, 17 parts of aluminum oxide, 8 parts of precipitated barium sulfate, 12 parts of ferric oxide, 3 parts of DMP-30 accelerator, 7 parts of active diluent solvent (ethylene glycol diglycidyl ether), 42 parts of polyamide curing agent, 1 part of REC-1 type rare earth ytterbium chelate and 1 part of REC-2 type rare earth yttrium chelate.
The polysiloxane finish paint comprises the following components in parts by weight: 80 parts of polysiloxane resin, 60 parts of organosilicon modified acrylic resin, 30 parts of isocyanate crosslinking agent, 4 parts of glass beads, 26 parts of titanium oxide, 4 parts of platy titanium oxide, 4 parts of mica powder, 4 parts of boron nitride powder (platy), 1 part of modified graphene, 8 parts of PM, 8 parts of isopropanol and 6 parts of ethanol.
Example 4
The difference between the embodiment and the embodiment 1 lies in that, the graphene modified heavy-duty anticorrosive material provided in the embodiment includes a graphene modified inorganic zinc-rich primer, an epoxy sealing paint, an epoxy cloud iron intermediate paint and a polysiloxane finish paint, which are sequentially arranged on the surface of a body to be anticorrosive, wherein:
The inorganic zinc-rich primer comprises the following components in parts by weight: 4 parts of modified graphene, 40 parts of tetraethoxysilane, 6 parts of water, 14 parts of PM, 4 parts of aluminum oxide, 11 parts of ferrophosphorus powder, 4 parts of titanium oxide, 2 parts of silicon carbide, 6 parts of cloud iron powder, 1 part of REC-1 type rare earth ytterbium chelate, 1 part of REC-2 type rare earth yttrium chelate, 4 parts of boron nitride, 4 parts of polyvinyl butyral, 130 parts of zinc powder, 1 part of zinc chloride, 1 part of stannous chloride and 2 parts of silver nitrate.
The epoxy sealing paint comprises the following components in parts by weight: 100 parts of epoxy resin, 25 parts of aluminum oxide, 6 parts of platy titanium oxide, 15 parts of ferric oxide, 3 parts of DMP-30 accelerator, 10 parts of reactive diluent (ethylene glycol diglycidyl ether), 32 parts of polyamide curing agent, 1 part of REC-1 type rare earth ytterbium chelate and 1 part of REC-2 type rare earth yttrium chelate.
The epoxy cloud iron intermediate paint comprises the following components in parts by weight: 70 parts of epoxy resin, 30 parts of cloud iron powder (flaky ferric oxide), 14 parts of talcum powder, 17 parts of aluminum oxide, 8 parts of precipitated barium sulfate, 12 parts of ferric oxide, 3 parts of DMP-30 accelerator, 7 parts of active diluent solvent (ethylene glycol diglycidyl ether), 42 parts of polyamide curing agent, 1 part of REC-1 type rare earth ytterbium chelate and 1 part of REC-2 type rare earth yttrium chelate.
The polysiloxane finish paint comprises the following components in parts by weight: 80 parts of polysiloxane resin, 60 parts of organosilicon modified acrylic resin, 30 parts of isocyanate crosslinking agent, 4 parts of glass beads, 26 parts of titanium oxide, 4 parts of platy titanium oxide, 4 parts of mica powder, 4 parts of boron nitride powder (platy), 2 parts of modified graphene, 8 parts of PM, 8 parts of isopropanol and 6 parts of ethanol
Example 5
The difference between the embodiment and the embodiment 1 lies in that, the graphene modified heavy-duty anticorrosive material provided in the embodiment includes a graphene modified inorganic zinc-rich primer, an epoxy sealing paint, an epoxy cloud iron intermediate paint and a polysiloxane finish paint, which are sequentially arranged on the surface of a body to be anticorrosive, wherein:
the inorganic zinc-rich primer comprises the following components in parts by weight: 5 parts of modified graphene, 40 parts of tetraethoxysilane, 6 parts of water, 14 parts of PM, 4 parts of aluminum oxide, 10 parts of ferrophosphorus powder, 4 parts of titanium oxide, 2 parts of silicon carbide, 6 parts of cloud iron powder, 1 part of REC-1 type rare earth ytterbium chelate, 1 part of REC-2 type rare earth yttrium chelate, 4 parts of boron nitride, 4 parts of polyvinyl butyral, 128 parts of zinc powder, 1 part of zinc chloride, 1 part of stannous chloride and 2 parts of silver nitrate.
The epoxy sealing paint comprises the following components in parts by weight: 100 parts of epoxy resin, 25 parts of aluminum oxide, 6 parts of platy titanium oxide, 15 parts of ferric oxide, 3 parts of DMP-30 accelerator, 10 parts of reactive diluent (ethylene glycol diglycidyl ether), 32 parts of polyamide curing agent, 1 part of REC-1 type rare earth ytterbium chelate and 1 part of REC-2 type rare earth yttrium chelate.
The epoxy cloud iron intermediate paint comprises the following components in parts by weight: 70 parts of epoxy resin, 30 parts of cloud iron powder (flaky ferric oxide), 14 parts of talcum powder, 17 parts of aluminum oxide, 8 parts of precipitated barium sulfate, 12 parts of ferric oxide, 3 parts of DMP-30 accelerator, 7 parts of active diluent solvent (ethylene glycol diglycidyl ether), 42 parts of polyamide curing agent, 1 part of REC-1 type rare earth ytterbium chelate and 1 part of REC-2 type rare earth yttrium chelate.
The polysiloxane finish paint comprises the following components in parts by weight: 80 parts of polysiloxane resin, 60 parts of organosilicon modified acrylic resin, 30 parts of isocyanate crosslinking agent, 4 parts of glass beads, 26 parts of titanium oxide, 4 parts of platy titanium oxide, 4 parts of mica powder, 4 parts of boron nitride powder (platy), 2 parts of modified graphene, 8 parts of PM, 8 parts of isopropanol and 6 parts of ethanol.
Example 6
The difference between the embodiment and the embodiment 1 lies in that, the graphene modified heavy-duty anticorrosive material provided in the embodiment includes a graphene modified inorganic zinc-rich primer, an epoxy sealing paint, an epoxy cloud iron intermediate paint and a polysiloxane finish paint, which are sequentially arranged on the surface of a body to be anticorrosive, wherein:
the inorganic zinc-rich primer comprises the following components in parts by weight: 6 parts of modified graphene, 40 parts of tetraethoxysilane, 6 parts of water, 14 parts of PM, 4 parts of aluminum oxide, 10 parts of ferrophosphorus powder, 4 parts of titanium oxide, 2 parts of silicon carbide, 6 parts of cloud iron powder, 1 part of REC-1 type rare earth ytterbium chelate, 1 part of REC-2 type rare earth yttrium chelate, 4 parts of boron nitride, 4 parts of polyvinyl butyral, 126 parts of zinc powder, 1 part of zinc chloride, 1 part of stannous chloride and 2 parts of silver nitrate.
The epoxy sealing paint comprises the following components in parts by weight: 100 parts of epoxy resin, 25 parts of aluminum oxide, 6 parts of platy titanium oxide, 15 parts of ferric oxide, 3 parts of DMP-30 accelerator, 10 parts of reactive diluent (ethylene glycol diglycidyl ether), 32 parts of polyamide curing agent, 1 part of REC-1 type rare earth ytterbium chelate and 1 part of REC-2 type rare earth yttrium chelate.
The epoxy cloud iron intermediate paint comprises the following components in parts by weight: 70 parts of epoxy resin, 30 parts of cloud iron powder (flaky ferric oxide), 14 parts of talcum powder, 17 parts of aluminum oxide, 8 parts of precipitated barium sulfate, 12 parts of ferric oxide, 3 parts of DMP-30 accelerator, 7 parts of active diluent solvent (ethylene glycol diglycidyl ether), 42 parts of polyamide curing agent, 1 part of REC-1 type rare earth ytterbium chelate and 1 part of REC-2 type rare earth yttrium chelate.
The polysiloxane finish paint comprises the following components in parts by weight: 80 parts of polysiloxane resin, 60 parts of organosilicon modified acrylic resin, 30 parts of isocyanate crosslinking agent, 4 parts of glass beads, 26 parts of titanium oxide, 4 parts of platy titanium oxide, 4 parts of mica powder, 4 parts of boron nitride powder (platy), 2 parts of modified graphene, 8 parts of PM, 8 parts of isopropanol and 6 parts of ethanol.
Comparative example 1
The difference between the embodiment and the embodiment 1 is that the heavy-duty anticorrosive material provided in the embodiment includes an inorganic zinc-rich primer, an epoxy sealing paint, an epoxy cloud iron intermediate paint and a polysiloxane finish, which are sequentially disposed on the surface of a body to be anticorrosive, wherein all powder materials are not subjected to silane modification treatment, graphene in the inorganic zinc-rich primer is not subjected to modification treatment, and the inorganic zinc-rich primer, the epoxy sealing paint and the epoxy cloud iron intermediate paint do not contain rare earth chelating agents, and specifically includes:
The inorganic zinc-rich primer comprises the following components in parts by weight: 1 part of graphene, 40 parts of tetraethoxysilane, 6 parts of water, 14 parts of PM (particulate matter), 4 parts of aluminum oxide, 14 parts of ferrophosphorus powder, 4 parts of titanium oxide, 2 parts of silicon carbide, 6 parts of cloud iron powder, 4 parts of boron nitride, 4 parts of polyvinyl butyral, 136 parts of zinc powder, 1 part of zinc chloride, 1 part of stannous chloride and 2 parts of silver nitrate.
The epoxy sealing paint comprises the following components in parts by weight: 100 parts of epoxy resin, 25 parts of aluminum oxide, 6 parts of platy titanium oxide, 15 parts of ferric oxide, 3 parts of DMP-30 accelerator, 10 parts of reactive diluent (ethylene glycol diglycidyl ether) and 32 parts of polyamide curing agent.
The epoxy cloud iron intermediate paint comprises the following components in parts by weight: 70 parts of epoxy resin, 30 parts of cloud iron powder (flaky ferric oxide), 14 parts of talcum powder, 17 parts of aluminum oxide, 8 parts of precipitated barium sulfate, 12 parts of ferric oxide, 3 parts of DMP-30 accelerator, 7 parts of active diluent solvent (ethylene glycol diglycidyl ether) and 42 parts of polyamide curing agent.
The polysiloxane finish paint comprises the following components in parts by weight: 80 parts of polysiloxane resin, 60 parts of organosilicon modified acrylic resin, 30 parts of isocyanate crosslinking agent, 4 parts of glass beads, 26 parts of titanium oxide, 4 parts of platy titanium oxide, 4 parts of mica powder, 4 parts of boron nitride powder (platy), 1 part of graphene, 8 parts of PM, 8 parts of isopropanol and 6 parts of ethanol.
Comparative example 2
The difference from embodiment 1 is that the heavy-duty anticorrosive material provided in this embodiment includes an inorganic zinc-rich primer, an epoxy sealer, an epoxy cloud iron intermediate paint and a polysiloxane finish, which are sequentially disposed on the surface of a body to be anticorrosive, wherein: all powder materials are not subjected to silane modification treatment, the inorganic zinc-rich primer does not contain graphene, and the inorganic zinc-rich primer, the epoxy sealing paint and the epoxy cloud iron intermediate paint do not contain rare earth chelating agents, and specifically comprise the following steps:
the inorganic zinc-rich primer comprises the following components in parts by weight: 40 parts of tetraethoxysilane, 6 parts of water, 14 parts of PM, 4 parts of aluminum oxide, 14 parts of phosphorus iron powder, 4 parts of titanium oxide, 2 parts of silicon carbide, 6 parts of cloud iron powder, 4 parts of boron nitride, 4 parts of polyvinyl butyral, 136 parts of zinc powder, 1 part of zinc chloride, 1 part of stannous chloride and 2 parts of silver nitrate.
The epoxy sealing paint comprises the following components in parts by weight: 100 parts of epoxy resin, 25 parts of aluminum oxide, 6 parts of platy titanium oxide, 15 parts of ferric oxide, 3 parts of DMP-30 accelerator, 10 parts of reactive diluent (ethylene glycol diglycidyl ether) and 32 parts of polyamide curing agent.
The epoxy cloud iron intermediate paint comprises the following components in parts by weight: 70 parts of epoxy resin, 30 parts of cloud iron powder (flaky ferric oxide), 14 parts of talcum powder, 17 parts of aluminum oxide, 8 parts of precipitated barium sulfate, 12 parts of ferric oxide, 3 parts of DMP-30 accelerator, 7 parts of active diluent solvent (ethylene glycol diglycidyl ether) and 42 parts of polyamide curing agent.
The polysiloxane finish paint comprises the following components in parts by weight: 80 parts of polysiloxane resin, 60 parts of organosilicon modified acrylic resin, 30 parts of isocyanate crosslinking agent, 4 parts of glass beads, 26 parts of titanium oxide, 4 parts of platy titanium oxide, 4 parts of mica powder, 4 parts of boron nitride powder (platy), 8 parts of PM (particulate matter), 8 parts of isopropanol and 6 parts of ethanol.
The heavy duty materials of examples 1 to 6 and comparative examples 1 to 2 were subjected to salt spray resistance test (see GB/T10125), VOCs test (see GB/T23985-2009), aging resistance test (see GB/T1865-2009), hardness test (see GB/T6739-2006), adhesion test (see GB 1720-79), and abrasion resistance test (see GB/T1768-2006), and the test results are shown in the following table.
TABLE 1 results of Performance test of heavy Corrosion-resistant materials in examples 1-6 and comparative examples 1-2
As can be seen from comparative examples 1 and 2, the addition of the graphene material is helpful to improve the salt spray resistance, aging resistance and wear resistance of the heavy-duty anticorrosive material, and is environment-friendly. In addition, as can be seen from the results of the performance tests of the heavy-duty materials in examples 1 to 6 and comparative examples 1 to 2, the heavy-duty materials obtained in examples 1 to 6 contained low VOCs, excellent salt spray resistance, aging resistance, and abrasion resistance, relative to the heavy-duty materials obtained in comparative examples 1 and 2. From the above, the silane modification treatment, the graphene modification treatment and the addition of the rare earth chelating agent of the powder material have obvious effects on improving the salt spray resistance, the ageing resistance, the wear resistance and the environmental protection of the heavy anti-corrosion material.
Although the present disclosure is disclosed above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the disclosure.
Claims (10)
1. The graphene modified heavy-duty anticorrosive material is characterized by comprising a graphene modified inorganic zinc-rich primer (1), an epoxy sealing paint (2) with the solid content of 50% -70%, an epoxy cloud iron intermediate paint (3) with the solid content of 50% -70% and a polysiloxane finish (4) which are sequentially arranged on the surface of a body to be anticorrosive, wherein all powder materials in the inorganic zinc-rich primer (1), the epoxy sealing paint (2), the epoxy cloud iron intermediate paint (3) and the polysiloxane finish (4) are subjected to silane modification treatment, and the inorganic zinc-rich primer (1), the epoxy sealing paint (2) and the epoxy cloud iron intermediate paint (3) all contain rare earth chelating agents.
2. The graphene-modified heavy-duty corrosion-resistant material according to claim 1, wherein the silane modification treatment method comprises: adding the powder material into deionized water, ultrasonically cleaning for 25-35 min, adding into ethanol solution of silane coupling agent with mass fraction of 5%, sealing, placing on a magnetic stirrer with constant temperature of 80 ℃ for continuously stirring for 2.5-3.5 h, and carrying out suction filtration, washing and drying to constant weight to obtain the modified powder material.
3. The graphene-modified heavy-duty corrosion-resistant material according to claim 2, wherein the silane coupling agent comprises one of methyltrimethoxysilane, phenyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, and ethyltriethoxysilane.
4. The graphene-modified heavy-duty anticorrosive material according to claim 1, wherein the inorganic zinc-rich primer (1) comprises, in weight composition: 20% of tetraethoxysilane, 3% of water, 7% of propylene glycol methyl ether, 5-7% of phosphorus iron powder, 2% of titanium oxide, 1% of silicon carbide, 3% of cloud iron powder, 2% of boron nitride, 2% of polyvinyl butyral, 0.1-0.5% of REC-1 type rare earth ytterbium chelate, 0.1-0.5% of REC-2 type rare earth yttrium chelate, 0.5-3% of modified graphene, 62.5-67.8% of zinc powder, 0.5% of zinc chloride, 0.5% of stannous chloride and 1% of silver nitrate.
5. The graphene-modified heavy-duty anticorrosive material according to claim 4, wherein the preparation method of the modified graphene comprises: and (3) ultrasonically cleaning graphene in ethanol for 25-35 minutes, dispersing in DMF solvent, ultrasonically stirring for 10-20 minutes to obtain a dispersion liquid, adding a siloxane coupling agent with the mass fraction of 5% into the dispersion liquid, stirring and heating to 90-100 ℃ for reaction for 3 hours, and centrifuging and washing to obtain the siloxane modified graphene.
6. The graphene-modified heavy-duty anticorrosive material according to claim 1, wherein the epoxy sealer (2) comprises, in weight composition: 50% of epoxy resin, 5-20% of alumina, 1-5% of flaky titanium oxide, 5-10% of ferric oxide, 1.5% of DMP-30 accelerator, 2-8% of reactive diluent, 25-27% of polyamide curing agent, 0.1-0.5% of REC-1 type rare earth ytterbium chelate and 0.1-0.5% of REC-2 type rare earth yttrium chelate.
7. The graphene-modified heavy-duty anticorrosive material according to claim 1, wherein the epoxy cloud iron intermediate paint (3) comprises, in weight: 30-40% of epoxy resin, 10-20% of cloud iron powder, 7% of talcum powder, 7-10% of aluminum oxide, 3-5% of precipitated barium sulfate, 5-7% of ferric oxide, 1.5% of DMP-30 accelerator, 2-5% of active diluent solvent, 20-22% of polyamide curing agent, 0.1-0.5% of REC-1 type rare earth ytterbium chelate and 0.1-0.5% of REC-2 type rare earth yttrium chelate.
8. The graphene-modified heavy-duty anticorrosive material according to claim 1, wherein the polysiloxane topcoat (4) has a weight composition comprising: 40% of polysiloxane resin, 30% of organosilicon modified acrylic resin, 15% of isocyanate crosslinking agent, 2% of glass beads, 13% of titanium oxide, 2% of flaky titanium oxide, 2% of mica powder, 2% of boron nitride powder, 0.1-1% of modified graphene, 4% of propylene glycol methyl ether, 4% of isopropanol and 3% of ethanol.
9. The graphene-modified heavy-duty anticorrosive material according to claim 1, wherein the thickness of the inorganic zinc-rich primer (1) is 74-76 μm, the thickness of the epoxy sealer (2) is 64-66 μm, the thickness of the epoxy cloud iron intermediate paint (3) is 119-121 μm, and the thickness of the polysiloxane topcoat (4) is 119-121 μm.
10. Use of a graphene-modified heavy-duty corrosion protection material according to any one of claims 1 to 9, wherein the graphene-modified heavy-duty corrosion protection material is applied to the surface of a steel building, pipeline or storage tank for corrosion protection.
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