One-component waterborne graphene anticorrosion coating, its preparation method and application
A water-based graphene and anti-corrosion coating technology, applied in anti-corrosion coatings, coatings, etc., can solve problems such as high content of volatile organic compounds, accelerated corrosion of metal materials, and impact on human health, achieving good adhesion and gasoline resistance The effect of excellent, good construction performance and anti-corrosion performance
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[0051] Another aspect of the embodiments of the present invention also provides the preparation method of the one-component waterborne graphene anticorrosion coating, which includes:
[0052] S1. Dilute the water-based epoxy-modified acrylic resin with deionized water, adjust the pH of the system to 7.5-8.5 with an amine neutralizer, then add a water-based graphene dispersant and a water-based defoamer to the resin solution, and then Add fumed silica, inorganic pigments, talcum powder, barium sulfate, graphene dispersion and zinc phosphate successively while stirring;
[0053] S2. Sand-mill the mixture obtained in S1 to a fineness of ≤40 microns, filter, continue to add the remaining resin, deionized water, water-based wetting agent and leveling agent to the filtrate, and stir evenly to form the single group One-part water-based graphene anti-corrosion coating.
[0054] An aspect of the embodiments of the present invention also provides a metal surface protection method, whic...
Embodiment 1
[0060] Dilute 25 parts of water-based epoxy-modified acrylic resin (purchased from Kunshan Yajialong Company) with 17 parts of deionized water, and adjust the pH value of the mixture to 7.5-8.5 with 0.5 part of DMEA (purchased from Hemings Company) Between, stir evenly; After continuing to add 0.5 part of water-based graphene dispersant polyaniline nanoparticles, 6 parts of water-based rust conversion agent phosphates, 0.3 part of water-based defoamer (purchased from Evonik Chemical) in the mixture, stir while Add 0.3 parts of fumed silica (purchased from Cabot), 20 parts of iron oxide black pigment (purchased from Yipin Pigment), 9 parts of talcum powder (purchased from Gree Chemical), 15 parts of barium sulfate, 1.5 parts of water-based graphene Slurry (purchased from Ningbo Moxi Technology Co., Ltd., industrial product graphene layers 3-10, diameter 5-15 μm, thickness 1-5nm, purity 99.5%), 1.5 parts of zinc phosphate (purchased from Jinhui Chemical Industry), Grind through ...
Embodiment 2
[0062] Dilute 45 parts of water-based epoxy-modified acrylic resin (purchased from Kunshan Yajialong Company) with 10 parts of deionized water, and adjust the pH value of the mixture to 7.5-8.5 with 1 part of DMEA (purchased from Hemings Company) In between, stir evenly; After adding 0.3 parts of graphene dispersant polyaniline nanoparticles, 6 parts of water-based rust conversion agent phosphate, and 0.5 parts of water-based defoamer (purchased from Evonik Chemical) to the mixture, add while stirring 0.2 parts of fumed silica (purchased from Cabot), 15 parts of iron oxide black pigment (purchased from Yipin Pigment), 5 parts of talc powder (purchased from Gree Chemical), 10 parts of barium sulfate), 2 parts of water-based graphene Slurry (purchased from Ningbo Moxi Technology Co., Ltd., industrial graphene layers 3-10, diameter 5-15 μm, thickness 1-5nm, purity 99.5%), 0.5 parts of zinc phosphate (purchased from Jinhui Chemical Industry), Grind with a sand mill to a fineness o...
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