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    Home > Coatings News > Paints and Coatings Market > [Industry] When the "king of new materials" graphene meets "environmentally friendly" water-based coatings

    [Industry] When the "king of new materials" graphene meets "environmentally friendly" water-based coatings

    • Last Update: 2021-05-01
    • Source: Internet
    • Author: User
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    Graphene is the world's thinnest anti-corrosion material and can be used for metal protection.
    It is known as the "king of new materials".
    Research on graphene in the field of anti-corrosion has attracted the attention of researchers from all over the world.
    A large number of research results show that graphene has excellent electrical conductivity, thermal conductivity, ultra-light and thin, and ultra-large specific surface area, making it a natural functional material that improves the performance of anti-corrosion coatings and reduces the cost of anti-corrosion coatings.


    Because of its low pollution, easy purification, and non-irritating characteristics, water-based coatings have become green and environmentally friendly coatings vigorously developed in the coating industry.
    At present, all parts of the country are accelerating the process of changing oil to water, but the protective effect of water-based coatings is still inferior to its corresponding solvent-based coatings.
    As a result, its application in the heavy-duty anti-corrosion field is still not high, and the anti-corrosion performance of water-based coatings has been improved.
    Become the focus of the development of environmentally friendly coatings.


    The unique properties of graphene bring new ways to improve the compactness, barrier properties, mechanical properties and anti-corrosion properties of water-based coatings.
    In recent years, the research of graphene has made significant progress.
    The effects shown by solvent-based composite anticorrosive coatings prepared by solution or melt blending, in-situ polymerization, etc.
    , have also been proven feasible.
    These provide the application and development of graphene waterborne composite anticorrosive coating The research basis has been established, and new possibilities have been brought.
    The unique properties of graphene bring new ways to improve the compactness, barrier properties, mechanical properties and anti-corrosion properties of water-based coatings.
    In recent years, the research of graphene has made significant progress.
    The effects shown by solvent-based composite anticorrosive coatings prepared by solution or melt blending, in-situ polymerization, etc.
    , have also been proven feasible.
    These provide the application and development of graphene waterborne composite anticorrosive coating The research basis has been established, and new possibilities have been brought.
    The unique properties of graphene bring new ways to improve the compactness, barrier properties, mechanical properties and anti-corrosion properties of water-based coatings.
    In recent years, the research of graphene has made significant progress.
    The effects shown by solvent-based composite anticorrosive coatings prepared by solution or melt blending, in-situ polymerization, etc.
    , have also been proven feasible.
    These provide the application and development of graphene waterborne composite anticorrosive coating The research basis has been established, and new possibilities have been brought.


    Graphene Waterborne Polyurethane Anticorrosive CoatingGraphene Waterborne Polyurethane Anticorrosive Coating
    Waterborne polyurethane has the properties of solvent-based polyurethane and overcomes the environmental pollution caused by solvent volatilization.
    However, the thermal stability, solvent resistance, and mechanical properties of water-based polyurethane are poor, which affects its application range.
    Therefore, in order to provide the comprehensive performance of water-based polyurethane, it is usually cross-linked modification, epoxy resin modification, and silicone Modification and inorganic nano material modification.
    Waterborne polyurethane has the properties of solvent-based polyurethane and overcomes the environmental pollution caused by solvent volatilization.
    However, the thermal stability, solvent resistance, and mechanical properties of water-based polyurethane are poor, which affects its application range.
    Therefore, in order to provide the comprehensive performance of water-based polyurethane, it is usually cross-linked modification, epoxy resin modification, and silicone Modification and inorganic nano material modification.
    Waterborne polyurethane has the properties of solvent-based polyurethane and overcomes the environmental pollution caused by solvent volatilization.
    However, the thermal stability, solvent resistance, and mechanical properties of water-based polyurethane are poor, which affects its application range.
    Therefore, in order to provide the comprehensive performance of water-based polyurethane, it is usually cross-linked modification, epoxy resin modification, and silicone Modification and inorganic nano material modification.

    Graphene, as a new high-performance nano-reinforcer, improves the water resistance, thermal performance, and mechanical properties of polyurethane to varying degrees.
    The researchers used the blending method to compound the graphene oxide modified with allyl isocyanate and the water-based polyurethane.
    After investigation, the tensile strength, glass transition temperature and thermal stability of the compound were significantly improved.

    Graphene oxide, reduced graphene oxide, and functionalized graphene derivatives are added as inorganic nanofillers to waterborne polyurethane anticorrosive coatings.
    Combined with salt spray test and electrochemical impedance characterization methods, the surface chemical state of graphene is investigated in detail The influence of factors such as dispersion state and dosage on the corrosion resistance of waterborne polyurethane composite coatings.
    The results show that the reduced graphene oxide with a mass fraction of 0.
    2% has the most excellent enhancement effect on the corrosion resistance of the waterborne polyurethane composite coating.


    Graphene Waterborne Epoxy Anticorrosive CoatingGraphene Waterborne Epoxy Anticorrosive Coating
    After years of hard work by R&D workers, water-based epoxy coatings have overcome the shortcomings of poor water resistance/corrosion resistance, and have been gradually applied to the heavy-duty anti-corrosion field involved in solvent-based coatings.
    In order to further improve its anti-corrosion performance, researchers have compounded graphene into water-based epoxy coatings to develop a new type of composite coating.
    After years of hard work by R&D workers, water-based epoxy coatings have overcome the shortcomings of poor water resistance/corrosion resistance, and have been gradually applied to the heavy-duty anti-corrosion field involved in solvent-based coatings.
    In order to further improve its anti-corrosion performance, researchers have compounded graphene into water-based epoxy coatings to develop a new type of composite coating.
    After years of hard work by R&D workers, water-based epoxy coatings have overcome the shortcomings of poor water resistance/corrosion resistance, and have been gradually applied to the heavy-duty anti-corrosion field involved in solvent-based coatings.
    In order to further improve its anti-corrosion performance, researchers have compounded graphene into water-based epoxy coatings to develop a new type of composite coating.

    The researchers used sodium polyacrylate to uniformly and stably disperse the graphene slurry into the aqueous solution, and then physically mixed the graphene water-based epoxy resin coating.
    The coating was discussed by polarization curve, AC impedance spectroscopy, and neutral salt spray test.
    Corrosion resistance of the layer.
    The results show that after adding graphene, the composite coating exhibits better water barrier properties, and the diffusion rate of water molecules in the coating is significantly slowed down; at the same time, the anti-corrosion effect of the coating is significantly improved.
    The electrochemical test results show that the addition of graphite The self-corrosion current density of the olefin composite coating is significantly reduced, and the coating resistance and charge transfer resistance are increased.

    In-situ polymerization-chemical reduction method was used to intercalate aniline onto the surface of graphene and between the layers to prepare polyaniline/graphene composite materials, and mechanical blending method to obtain polyaniline/graphene-waterborne epoxy resin Composite anticorrosive coating.
    The results of the study found that compared with polyaniline, the graphene-doped polyaniline composite material has a higher specific surface area, and maintains the original lamellar structure of graphene; the prepared composite coating exhibits high resistance Permeability, corrosion resistance and corrosion resistance are superior to the protective properties of polyaniline and pure epoxy resin.


    Graphene Waterborne Acrylic Anticorrosive CoatingGraphene Waterborne Acrylic Anticorrosive Coating
    Water-based acrylic anticorrosive coatings are inexpensive, safe and environmentally friendly, have excellent aging resistance, good alkali resistance, and simple synthesis and processing.
    However, due to the residual hydrophilic groups, their water resistance is poor and easy to flash corrosion.
    Researchers used graphene in water-based acrylic resin anticorrosive coatings.
    By using corresponding dispersants or coupling agents, the dispersion of graphene in the coatings was improved, and further, through agitation, sanding, filtration and other processes, Realize the preparation of water-based graphene coatings.
    The results show that the water-based graphene coating has outstanding water resistance and salt spray resistance, and its anti-corrosion effect is significantly better than that of water-based coatings filled with other carbon-based materials.
    Water-based acrylic anticorrosive coatings are inexpensive, safe and environmentally friendly, have excellent aging resistance, good alkali resistance, and simple synthesis and processing.
    However, due to the residual hydrophilic groups, their water resistance is poor and easy to flash corrosion.
    Researchers used graphene in water-based acrylic resin anticorrosive coatings.
    By using corresponding dispersants or coupling agents, the dispersion of graphene in the coatings was improved, and further, through agitation, sanding, filtration and other processes, Realize the preparation of water-based graphene coatings.
    The results show that the water-based graphene coating has outstanding water resistance and salt spray resistance, and its anti-corrosion effect is significantly better than that of water-based coatings filled with other carbon-based materials.
    Water-based acrylic anticorrosive coatings are inexpensive, safe and environmentally friendly, have excellent aging resistance, good alkali resistance, and simple synthesis and processing.
    However, due to the residual hydrophilic groups, their water resistance is poor and easy to flash corrosion.
    Researchers used graphene in water-based acrylic resin anticorrosive coatings.
    By using corresponding dispersants or coupling agents, the dispersion of graphene in the coatings was improved, and further, through agitation, sanding, filtration and other processes, Realize the preparation of water-based graphene coatings.
    The results show that the water-based graphene coating has outstanding water resistance and salt spray resistance, and its anti-corrosion effect is significantly better than that of water-based coatings filled with other carbon-based materials.

    The graphene oxide/acrylate/cement composite coating was prepared by the solution blending method.
    The study found that the oxygen-containing groups on the surface of the graphene oxide can effectively control the growth of cement hydration products, and make the composite coating's permeability resistance and tensile strength And the properties such as elongation at break have been significantly improved, and the coating is environmentally friendly and pollution-free.


    Graphene water-based inorganic zinc-rich graphene water-based inorganic zinc-rich
    The water-based inorganic zinc-rich primer is based on silicate solution as an important film-forming material, with high content of zinc powder (in order to improve the performance of the coating film, you can mix some flake aluminum powder, sericite powder, phosphorus iron powder, phosphorus Iron-zinc-silica powder, etc.
    ) are water-based heavy-duty anti-corrosion primers for anti-corrosion pigments.
    Due to the high zinc content, the zinc powder is easy to whiten in the air, reducing the adhesion of the coating, and the coating is prone to blistering and dry cracking during use, and the anti-corrosion performance is reduced.
    The water-based inorganic zinc-rich primer is based on silicate solution as an important film-forming material, with high content of zinc powder (in order to improve the performance of the coating film, you can mix some flake aluminum powder, sericite powder, phosphorus iron powder, phosphorus Iron-zinc-silica powder, etc.
    ) are water-based heavy-duty anti-corrosion primers for anti-corrosion pigments.
    Due to the high zinc content, the zinc powder is easy to whiten in the air, reducing the adhesion of the coating, and the coating is prone to blistering and dry cracking during use, and the anti-corrosion performance is reduced.
    The water-based inorganic zinc-rich primer is based on silicate solution as an important film-forming material, with high content of zinc powder (in order to improve the performance of the coating film, you can mix some flake aluminum powder, sericite powder, phosphorus iron powder, phosphorus Iron-zinc-silica powder, etc.
    ) are water-based heavy-duty anti-corrosion primers for anti-corrosion pigments.
    Due to the high zinc content, the zinc powder is easy to whiten in the air, reducing the adhesion of the coating, and the coating is prone to blistering and dry cracking during use, and the anti-corrosion performance is reduced.

    The researchers added graphene as an anti-corrosion additive to the water-based inorganic zinc-rich coating silicate liquid system.
    The results showed that the salt spray resistance of the coated sheet without the graphene anti-corrosion additive began to appear after 1500 hours of salt spray test.
    Abnormal changes, but there is no change in the salt spray resistance test of the coated film containing a trace of graphene anticorrosive additives after 2000h, indicating that the addition of graphene improves the salt spray resistance of the coating.


    Application development boom continues to heat up Application development boom continues to heat up
    After the water-based anti-corrosion coating is modified by graphene, its mechanical properties, chemical stability and anti-corrosion performance have been improved.
    There have been many related research works and patents published in China, and the development momentum is good.
    However, most of the researches on the application of graphene in water-based coatings are laboratory results, and the research is still in its infancy.
    There are still many thorny scientific and technical problems.
    However, graphene water-based composite anticorrosive coatings have broad development prospects and their applications The development boom continues to heat up.
    After the water-based anti-corrosion coating is modified by graphene, its mechanical properties, chemical stability and anti-corrosion performance have been improved.
    There have been many related research works and patents published in China, and the development momentum is good.
    However, most of the researches on the application of graphene in water-based coatings are laboratory results, and the research is still in its infancy.
    There are still many thorny scientific and technical problems.
    However, graphene water-based composite anticorrosive coatings have broad development prospects and their applications The development boom continues to heat up.
    After the water-based anti-corrosion coating is modified by graphene, its mechanical properties, chemical stability and anti-corrosion performance have been improved.
    There have been many related research works and patents published in China, and the development momentum is good.
    However, most of the researches on the application of graphene in water-based coatings are laboratory results, and the research is still in its infancy.
    There are still many thorny scientific and technical problems.
    However, graphene water-based composite anticorrosive coatings have broad development prospects and their applications The development boom continues to heat up.

    Source: Ai Tubang Public Account

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