• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention represents an epoxy anti-corrosion layer doped with graphene perovskite and a production method therefor and belongs to the technical field of anti-corrosion layers. The graphene-perovskite-doped epoxy anti-corrosion layer provided by the present invention includes, in parts by mass, 2-10 parts of graphene-perovskite complex, 10-30 parts of epoxy resin, 2-10 parts of titanium dioxide, 5-15 parts of coalescing agent, 1 -2 parts dispersant, 0.2-0.8 parts defoamer, 0.1-0.5 parts reactive thinner, 1-5 parts leveling agent, 2-10 parts water and 5-30 parts hardener. The graphene-perovskite complex consists of graphene and perovskite, the perovskite has a particle size in the nano range and the perovskite is distributed between the graphene sheets. The combination of the aforementioned components and the ratio can further improve the overall performance of the anti-corrosion layer.
    公开号:CH716599A2
    申请号:CH01394/19
    申请日:2019-11-05
    公开日:2021-03-15
    发明作者:Hu Ming；Xie Hai；Qian Jinjun
    申请人:Jiangsu Champion Tech Group Co Ltd；
    IPC主号:
    专利说明:

    description
    TECHNICAL PART
    The present invention relates to the technical field of anti-corrosion coatings, in particular to an epoxy anti-corrosion layer doped with graphene perovskite and a production method therefor.
    BACKGROUND
    Metal corrosion problems are common in ships, bridges, buildings and the like and cause great damage to people's lives and property. A common means of preventing metal corrosion is to apply an anti-corrosive coating to the metal surface, which delays the rate of corrosion of the metal and increases the service life. In recent years, graphene-based composite anti-corrosion coatings have been used in the field of corrosion protection for metal materials. Graphene has excellent chemical stability and mechanical strength and can enhance the anti-corrosion effect of the coating, and a polymer resin has strong adhesion. The composite graphene coatings obtained by combining the two substances have good film-forming property and excellent comprehensive properties. However, the anti-aging properties of the graphene composite anti-corrosion coating have yet to be improved.
    SUMMARY
    An object of the present invention is to provide a graphene perovskite doped epoxy anti-corrosion coating and a manufacturing method therefor. The graphene perovskite doped epoxy anti-corrosion coating of the present invention has excellent anti-aging properties.
    In order to achieve the above-mentioned purpose, the present invention offers the following technical solutions.
    The present invention provides an epoxy anti-corrosion layer doped with graphene perovskite, containing in parts by mass:
    2-10 parts graphene-perovskite complex, 10-30 parts epoxy resin, 2-10 parts titanium dioxide, 5-15 parts coalescing agent, 12 parts dispersing agent, 0.2-0.8 parts defoamer, 0.1-0.5 parts Reactive thinner, 1-5 parts leveling agent, 2-10 parts water and 5-30 parts hardener;
    wherein the graphene-perovskite complex consists of graphene and perovskite, the perovskite has a particle size in the nanometer range and the perovskite is distributed between the layers of the graphene.
    The perovskite is preferably a lanthanum manganate perovskite.
    Preferably, a method for producing the graphene-perovskite complex includes the following steps:
    after mixing lanthanum nitrate, manganese nitrate, a reducing agent and water, sol-gel reaction is carried out, and then drying and sintering are successively carried out to obtain perovskite particles in the nanometer range; and
    After the perovskite particles in the nanometer range have been mixed with graphene oxide, the mixture is calcined in a protective atmosphere in order to obtain the graphene-perovskite complex.
    The ratio of the mass of the perovskite particles in the nanometer range to the mass of the graphene oxide is preferably (0.5-1): 1.
    The sintering temperature is preferably 600-900 ° C, the time 1-5 h and the heating rate to a temperature required for sintering 2-10 ° C / min; the calcination temperature 700-1000 ° C, the time 1-10 h and the heating rate to a temperature required for the calcination 5-20 ° C / min.
    Preferably, the epoxy resin includes at least one of a bisphenol-A epoxy resin, a novolak epoxy resin and an aliphatic epoxy resin.
    Preferably, the coalescing agent includes at least one of an ethylene glycol butyl ether alcohol acid ester, a dibasic acidic dimethyl ester coalescing agent, and a dibasic acidic diethyl ester coalescing agent; and the dispersant is a self-flowing dispersant.
    Preferably, the defoamer includes at least one of a silicone defoamer, an inorganic silicon defoamer, and a polyether defoamer; and the reactive diluent includes a polyacrylic reactive diluent.
    Preferably, the leveling agent includes at least one of an acrylate leveling agent and a silicone leveling agent; and the curing agent includes at least one of an aliphatic polyamine curing agent and a fatty amine adduct curing agent.
    The present invention further provides a method for producing the graphene perovskite-doped epoxy anti-corrosion layer described above, including the following steps:
    Mixing a graphene-perovskite complex, a coalescing agent, a dispersing agent, a defoamer, a reactive diluent, a leveling agent and water to obtain a graphene-perovskite slurry;
    Mixing the graphene-perovskite complex, an epoxy resin, and titanium dioxide to obtain a preformed coating; and
    Mixing the pre-made coating with a curing agent to obtain the epoxy anti-corrosion coating doped with graphene perovskite.
    The present invention represents a doped with graphene-perovskite epoxy anti-corrosion layer, in parts by mass 2-10 parts of graphene-perovskite complex, 10-30 parts of epoxy resin, 2-10 parts of titanium dioxide, 5-15 parts of coalescing agent, 1 Contains -2 parts dispersant, 0.2-0.8 parts defoamer, 0.1-0.5 parts reactive thinner, 1-5 parts leveling agent, 2-10 parts water and 5-30 parts hardener. The graphene-perovskite complex consists of graphene and perovskite, the perovskite has a particle size in the nanometer range and the perovskite is distributed between the graphene layers. In the present invention, the graphene-perovskite complex is incorporated into the epoxy anti-corrosion coating, the perovskite being rich in oxygen vacancies, which is beneficial for the adsorption of oxygen on the metal surface, which delays the metal corrosion and the anti-aging Property of a graphene composite coating against corrosion is improved; Graphene provides a two-dimensional plane for populating perovskite, the perovskite is distributed between graphene layers and has good dispersibility, and this structure is also beneficial for improving the stability and mechanical properties of the anti-corrosion layer. In the present invention, an organic solvent is replaced by the reactive diluent in order to obtain a solvent-free epoxy resin coating which has the advantage of being environmentally friendly. In addition, the combination of the aforementioned components and the ratio can further improve the overall performance of the anti-corrosion coating.
    DETAILED DESCRIPTION
    The present invention provides an epoxy anti-corrosion layer doped with graphene-perovskite, containing in parts by mass: 2-10 parts graphene-perovskite complex, 10-30 parts epoxy resin, 2-10 parts titanium dioxide, 5-15 parts coalescing agent, 1 -2 parts dispersant, 0.2-0.8 parts defoamer, 0.1-0.5 parts reactive thinner, 1-5 parts leveling agent, 2-10 parts water and 5-30 parts hardener; the graphene-perovskite complex consists of graphene and perovskite, the perovskite has a particle size in the nanometer range, and the perovskite is distributed between the graphene layers.
    In the present invention, the graphene-perovskite doped epoxy anti-corrosion layer includes, by weight, 2-10 parts graphene-perovskite complex, preferably 4-6 parts; the perovskite is preferably lanthanum manganate perovskite; and the ratio of the perovskite to the mass of the graphene is preferably 1: (0.5-1). In the present invention, the perovskite is rich in oxygen vacancies, which is advantageous for the adsorption of oxygen on the metal surface, thereby retarding metal corrosion and improving the anti-aging property of a composite graphene coating; Graphene provides a two-dimensional plane for populating perovskite, the perovskite is dispersed between graphene sheets and has good dispersibility, and this structure is also beneficial for improving the stability and mechanical properties of the anti-corrosion coating.
    In the present invention, a method for producing the graphene-perovskite complex preferably includes the following steps: after mixing lanthanum nitrate, manganese nitrate, a reducing agent and water, performing a sol-gel reaction and then successively drying and sintering, to obtain nanoscale perovskite particles; and after the nanometer-scale perovskite particles have been mixed with graphene oxide, calcining the mixture in a protective atmosphere to obtain the graphene-perovskite complex.
    In the present invention, after lanthanum nitrate, manganese nitrate, a reducing agent and water, a sol-gel reaction is carried out, and then drying and sintering are carried out successively to obtain perovskite particles in the nanometer range.
    In the present invention, the raw materials are hydrolyzed in a solvent to form active monomers, and the reactive monomers are polymerized into a sol under the action of a reducing agent, and the sol is slowly polymerized through colloidal particles to form a gel a three-dimensional network structure, and the gel network is filled with a solvent that loses fluidity to form the gel, and the gel is dried, sintered and hardened to produce a nanostructured material.
    In the present invention, the reducing agent is preferably citric acid.
    In the present invention, the molar ratio of the lanthanum nitrate to the manganese nitrate to the reducing agent is preferably 1: 1: (1-5).
    In the present invention, the temperature of the sol-gel reaction is preferably 60-80 ° C, more preferably 65-75 ° C, and the time is preferably 1-5 hours. After the completion of the sol-gel reaction, according to the present invention, the obtained reaction system is directly dried and then sintered to obtain the perovskite particles in the nanometer range.
    The present invention has no particular limitation on the type of drying as long as a constant weight product can be obtained.
    In the present invention, the temperature of sintering is preferably 600-900 ° C, more preferably 700-800 ° C; the duration is preferably 1 -5 hours; the heating rate to a temperature required for sintering is preferably 2-10 ° C / min, more preferably 4-6 ° C / min.
    In the present invention, the average particle diameter of the perovskite in the nanometer range is preferably 50-200 nm.
    In the present invention, after the perovskite particles in the nanometer range have been obtained and mixed with graphene oxide, the mixture is calcined in a protective atmosphere in order to obtain the graphene-perovskite complex.
    In the present invention, rich oxygen-containing groups are present on the surface of the graphene oxide, which is advantageous for uniform distribution in layers of the nanoscale perovskite particles after mixing, and the oxygen-containing groups in the graphene oxide are removed in the calcination process to obtain graphene.
    In the present invention, as a method for mixing the nanoscale perovskite particles with graphene oxide, the nanoscale perovskite particles, the graphene oxide and water are preferably mixed and the mixture is dried to obtain a mixture of perovskite oxide and graphene oxide; it is preferable to mix graphene oxide with water to obtain a dispersion liquid of the graphene oxide, and then add nano-sized perovskite particles and mix and dry to obtain a mixture of the perovskite oxide and the graphene oxide; and the drying is preferably freeze drying.
    The present invention does not specifically limit the freeze-drying conditions as long as moisture can be removed. The ratio of the mass of the nanoscale perovskite particles to the mass of the graphene oxide is preferably (0.5-1): 1, preferably (0.7-0.8): 1.
    The present invention does not limit the amount of water used as long as the nanoscale perovskite particles and the graphene oxide can be uniformly distributed.
    A source of the graphene oxide is not limited in the present invention. In the embodiment of the present invention, the graphene oxide is preferably produced by the Hummers process.
    In the present invention, the protective atmosphere is preferably a nitrogen or protective gas atmosphere.
    In the present invention, the temperature of the calcination is preferably 700-1000 ° C, more preferably 800-900 ° C, and the time is preferably 1 -10 hours; the heating rate to a temperature required for calcination is preferably 5-20 ° C / min, more preferably 10-15 ° C / min.
    In the present invention, based on parts by weight of the graphene-perovskite complex, the epoxy anti-corrosion layer doped with graphene-perovskite includes 10-30 parts of epoxy resin, preferably 15-25 parts. As the epoxy resin, at least one of a bisphenol A epoxy resin, a novolak epoxy resin and an aliphatic epoxy resin is preferably used.
    In the present invention, the epoxy resin is a main film-forming substance and has advantages of strong adhesion and excellent chemical resistance, corrosion resistance, water resistance, heat stability, electrical insulation and the like.
    In the present invention, based on parts by weight of the graphene-perovskite complex, the epoxy anti-corrosion layer doped with graphene-perovskite includes 2-10 parts of titanium dioxide, preferably 5-8 parts. The titanium dioxide preferably has an average particle diameter of 10-200 nm. In the present invention, the effect of the titanium dioxide is to improve the physical and chemical properties of the coating, to improve the chemical stability, thereby improving the covering power, reducing the force, the corrosion resistance, the light resistance, the weather resistance and the mechanical strength and To improve the adhesion of a paint film.
    In the present invention, based on parts by weight of the graphene-perovskite complex, the epoxy anti-corrosion layer doped with graphene-perovskite includes 5-15 parts of coalescing agent, preferably 8-12 parts. The coalescing agent includes at least one of an ethylene glycol butyl ether alcohol acid ester, a dibasic acidic dimethyl ester coalescing agent, and a dibasic acidic diethyl ester coalescing agent;
    the dimethyl ester dibasic acid coalescing agent preferably includes at least one of dimethyl adipate, dimethyl succinic acid and dimethyl glutarate; and the diethyl ester dibasic coal esterifying agent preferably includes at least one of diethyl malonate and diethyl glutarate. In the present invention, the coalescing agent can promote the plastic flow and elastic deformation of a polymer compound and improve the coalescing performance, so that the coating can form a film in a wide range of application temperatures.
    In the present invention, based on parts by weight of the graphene-perovskite complex, the graphene-perovskite-doped epoxy anti-corrosion layer includes 1-2 parts of dispersant; and the dispersant is preferably a self-flowing dispersant, in particular a dispersant of the BYK101, BYK161 or BYK163 type, manufactured by BYK Chemie, or a dispersant of the Efka 5044 type, manufactured by EFKA.
    In the present invention, based on parts by weight of the graphene-perovskite complex, the epoxy anti-corrosion layer doped with graphene-perovskite includes 0.2-0.8 part of defoamer, preferably 0.4-0.6 part. The defoamer preferably includes at least one of a silicone defoamer, an inorganic silicon defoamer, and a polyether defoamer. In the present invention, the defoamer breaks a thin layer by reducing the surface tension or forms a monomolecular film so that the adhesion is decreased, and the thin layer is easily broken, thereby achieving the effects of defoaming and foam inhibition, and the aforesaid defoamer has the advantages of a fast defoaming rate and a long foam inhibition time.
    In the present invention, based on parts by weight of the graphene-perovskite complex, the epoxy anti-corrosion layer doped with graphene-perovskite includes 0.1-0.5 parts of the reactive diluent, preferably 0.2-0.4 parts; the reactive diluent is preferably a polyacrylic reactive diluent. In the embodiment of the present invention, the polyacrylic reactive diluent is preferably a polyacrylic reactive diluent of an SRA-15 type from the western company (EFKA).
    In the present invention, the reactive diluent replaces an organic solvent so that the coating does not need to use an organic solvent, and during the curing process, the reactive diluent can participate in the curing reaction of the epoxy resin and become part of the cured epoxy resin, and the reactive diluent has the advantage of being environmentally friendly.
    In the present invention, based on parts by weight of the graphene-perovskite complex, the epoxy anti-corrosion layer doped with graphene-perovskite includes 1-5 parts of leveling agent, preferably 2-4 parts. The leveling agent is preferably at least one of an acrylate leveling agent and a silicone leveling agent. In the present invention, the leveling agent helps to obtain a smooth and uniform coating film. In the present invention, the aforesaid leveling agent can not only promote the flowing and alignment of the coating film, but also does not affect the interleaving adhesion of the coating film and also has a defoaming effect.
    In the present invention, based on parts by weight of the graphene-perovskite complex, the epoxy anti-corrosion layer doped with graphene-perovskite includes 5-30 parts of hardener, preferably 15-20 parts; the hardener preferably includes at least one of an aliphatic polyamine hardener and a fatty amine adduct hardener. In the present invention, the aforesaid curing agent has good miscibility with the epoxy resin, and the cured epoxy resin is excellent in chemical resistance.
    In the present invention, the anticorrosive coating and the ratio obtained by the use of the above-mentioned components are excellent in aging resistance and are excellent in overall performance.
    The present invention further provides a method for producing the epoxy anti-corrosion layer doped with graphene perovskite according to the aforementioned technical solution, including the following steps of:
    Mixing a graphene-perovskite complex, a coalescing agent, a dispersing agent, a defoamer, a reactive diluent, a leveling agent and water to obtain graphene-perovskite slurry;
    Mixing the graphene-perovskite complex, an epoxy resin, and titanium dioxide to obtain a preformed coating; and
    Mixing the pre-made coating with a curing agent to obtain the epoxy anti-corrosion coating doped with graphene perovskite.
    According to the method for producing the graphene perovskite-doped epoxy anti-corrosion layer of the present invention, the uniformly dispersed anti-corrosion layer can be obtained.
    In the present invention, the mixing in the preparation of the epoxy anti-corrosion layer doped with graphene perovskite is not limited as long as a uniformly mixed mixture can be obtained.
    A graphene perovskite doped epoxy anti-corrosion layer and a manufacturing method of the present invention will be described in detail below with reference to embodiments, but the embodiments cannot be construed as limiting the scope of the present invention.
    Embodiment 1
    Lanthanum nitrate, manganese nitrate and anhydrous citric acid are uniformly mixed in water in a molar ratio of 1: 1:!, And the mixture obtained is subjected to a sol-gel reaction at 70 ° C for 6 h, dried, to 600 ° C heated at a heating rate of 2 ° C / min and subjected to heat preservation for 1 hour to obtain perovskite particles in the nanometer range; it was recognized that the perovskite particles in the nanometer range have an average particle diameter of 50 nm; the perovskite particles in the nanoscale are dispersed in an aqueous graphene oxide dispersion with a concentration of 1% by weight, the ratio of the mass of the nanoscale perovskite particles to the mass of the graphene oxide being 0.5: 1 and then the aqueous graphene oxide dispersion is subjected to freeze-drying in order to achieve a Get mix; and the obtained mixture is heated to 700 ° C. at a heating rate of 5 ° C./min under the protection of nitrogen and subjected to heat preservation for 1 hour to obtain a graphene-perovskite complex.
    According to parts by weight, an epoxy anti-corrosion layer doped with graphene perovskite is produced:
    2 parts graphene perovskite complex, 5 parts ethylene glycol butyl ether alcohol acid ester, 1 part BYK101 dispersant (BYK Chemie), 0.2 part silicone defoamer, 0.1 part polyacrylic reactive thinner, 1 part acrylate leveling agent and 2 parts water were mixed to obtain graphene-perovskite slurry.
    The graphene-perovskite complex, 10 parts of bisphenol A epoxy resin and 2 parts of titanium dioxide are mixed in order to obtain a prefabricated coating. The average particle diameter of the titanium dioxide is 10 nm.
    The prefabricated coating is mixed with 5 parts of aliphatic polyamine hardener in order to obtain the epoxy anti-corrosion layer doped with graphene perovskite.
    Embodiment 2
    Lanthanum nitrate, manganese nitrate and anhydrous citric acid are uniformly mixed in water in a molar ratio of 1: 1: 2, and the resulting mixture is subjected to sol-gel reaction at 80 ° C for 5 hours, dried at 700 ° C heated at a heating rate of 5 ° C / min and subjected to heat preservation for 3 hours to obtain nanoscale perovskite particles; it is found that the nano-scale perovskite particles have an average particle diameter of 100 nm; the perovskite particles in the nanoscale are dispersed in an aqueous graphene oxide dispersion with a concentration of 5% by weight, the ratio of the mass of the nano-scale perovskite particles to the mass of the graphene oxide being 0.8: 1 and the aqueous graphene oxide dispersion then being subjected to freeze-drying in order to achieve a Get mix; and the obtained mixture is heated to 800 ° C. at a heating rate of 10 ° C./min under the protection of nitrogen and subjected to heat preservation for 5 hours to obtain a graphene-perovskite complex.
    According to parts by weight, an epoxy anti-corrosion layer doped with graphene perovskite is produced:
    5 parts of graphene perovskite complex, 10 parts of dimethyl adipate, 1.5 parts of BYK161 dispersant (BYK Chemie), 0.5 part of inorganic silicon defoamer, 0.2 part of polyacrylic reactive thinner, 3 parts of silicone leveling agent and 10 parts of water are mixed to make graphene Obtain perovskite mud.
    The graphene-perovskite complex, 20 parts novolak epoxy resin and 5 parts titanium dioxide are mixed to obtain a pre-fabricated coating. The average particle diameter of the titanium dioxide is 100 nm.
    The prefabricated coating is mixed with 15 parts of aliphatic polyamine hardener in order to obtain the epoxy anti-corrosion layer doped with graphene perovskite.
    Embodiment 3
    Lanthanum nitrate, manganese nitrate and anhydrous citric acid are uniformly mixed in water in a molar ratio of 1: 1: 4, and the resulting mixture is subjected to sol-gel reaction at 90 ° C for 3 hours, dried at 900 ° C heated at a heating rate of 10 ° C / min and subjected to heat preservation for 5 hours to obtain nanoscale perovskite particles; it is found that the nano-scale perovskite particles have an average particle diameter of 200 nm; the nano-scale perovskite particles are dispersed in an aqueous graphene oxide dispersion with a concentration of 10% by weight, the ratio of the mass of the nano-scale perovskite particles to the mass of the graphene oxide being 1: 1, and then the aqueous graphene oxide dispersion
    权利要求:
    Claims (10)
    [1]
    1. Graphene-perovskite-doped epoxy anti-corrosion layer, comprising in parts by mass:
    2-10 parts graphene-perovskite complex, 10-30 parts epoxy resin, 2-10 parts titanium dioxide, 5-15 parts coalescing agent, 1-2 parts dispersing agent, 0.2-0.8 parts defoamer, 0.1-0, 5 parts reactive thinner, 1-5 parts leveling agent, 210 parts water and 5-30 parts hardener;
    wherein the graphene-perovskite complex consists of graphene and perovskite, the perovskite has a particle size in the nanometer range and the perovskite is distributed between the layers of graphene.
    [2]
    2. Graphene-perovskite-doped epoxy anti-corrosion layer according to claim 1, wherein the perovskite is lanthanum manganate perovskite.
    [3]
    The graphene-perovskite-doped epoxy anti-corrosion layer according to claim 2, wherein a method for producing the graphene-perovskite complex comprises the following steps:
    after mixing lanthanum nitrate, manganese nitrate, a reducing agent and water, performing a sol-gel reaction, and then successively drying and sintering to obtain nanometer-scale perovskite particles; and
    after the nanoscale perovskite particles have been mixed with graphene oxide, calcining the mixture in a protective atmosphere in order to obtain the graphene-perovskite complex.
    [4]
    4. Graphene-perovskite-doped epoxy anti-corrosion layer according to claim 3, wherein the ratio of the mass of the nanoscale perovskite particles to the mass of the graphene oxide is (0.5-1): 1.
    [5]
    5. Graphene-perovskite-doped epoxy anti-corrosion layer according to claim 3, wherein the sintering temperature is 600-900 ° C, the duration is 1-5 hours and the heating rate to a temperature required for sintering is 2-10 ° C / min; the calcination temperature is 700-1000 ° C, the time is 1 -10 hours, and the heating rate to a temperature required for calcination is 5-20 ° C / min.
    [6]
    The graphene-perovskite-doped epoxy anti-corrosion layer according to claim 1, wherein the epoxy resin comprises at least one of a bisphenol-A epoxy resin, a novolak epoxy resin and an aliphatic epoxy resin.
    [7]
    The graphene-perovskite-doped epoxy anti-corrosion layer according to claim 1, wherein the coalescing agent comprises at least one of an ethylene glycol butyl ether alcohol acid ester, a dimethyl acid dibasic coalescing agent, and a diethyl acid dibasic acid coalescing agent, and the dispersing agent is a self-flowing dispersant.
    [8]
    8. The graphene-perovskite-doped epoxy anti-corrosion coating of claim 1, wherein the defoamer comprises at least one of a silicone defoamer, an inorganic silicon defoamer, and a polyether defoamer; and the reactive diluent comprises a polyacrylic reactive diluent.
    [9]
    The graphene-perovskite-doped epoxy anti-corrosion coating of claim 1, wherein the leveling agent comprises at least one of an acrylate leveling agent and a silicone leveling agent; and the curing agent comprises at least one of an aliphatic polyamine curing agent and a fatty amine adduct curing agent.
    [10]
    10. A method for producing the epoxy anti-corrosion layer doped with graphene perovskite according to any one of claims 1 to 9, comprising the following steps:
    Mixing a graphene-perovskite complex, a coalescing agent, a dispersing agent, a defoamer, a reactive diluent, a leveling agent and water to obtain a graphene-perovskite complex;
    Mixing the graphene perovskite complex, an epoxy resin, and titanium dioxide to obtain a preformed coating; and
    Mixing the pre-made coating with a curing agent to obtain the epoxy anti-corrosion coating doped with graphene perovskite.
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    申请号 | 申请日 | 专利标题
    CN201910794751.8A|CN110484093A|2019-08-27|2019-08-27|A kind of graphene-perovskite doping corrosion-resistant epoxy paint and preparation method thereof|
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