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    Preparation and Research on Anticorrosion Zinc-Rich Coating of Hydraulic Metal Structure
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    Abstract:
    The types and addition dose of zinc in the zinc-rich coating have a significant impact on the character of coating. Two types of the zinc powders and the amount of zinc were researched in this paper. It reveals that flaky zinc coating is better than the spherical zinc coating on corrosion performance, and the performance of the coating will be the best only when the solid content of zinc is reasonable. The results also show that optimal solid content of flaky zinc are 62.5%, 60% and 60.5% in the inorganic zinc-rich coating, epoxy zinc-rich coating and vinyl resin zinc-rich coating, respectively.
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    Metal coating
    Measuring coating thickness is an important procedure when controlling the application of coatings to metal substrates for corrosion protection. Portable, low-cost coating thickness gauges have made field measurement of coating thickness practical. Therefore, regular and routine checks of coating thickness can now be made during the preparation and construction of steel work and throughout the life of the structure. This article explores reasons for measuring coating thickness, the types of equipment used, standards that apply to the use of coating thickness gauges, the keys to successful coating thickness measurement in the field, and practical hints for users of thickness gauges.
    Metal coating
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    The main technical characteristics and development trends of flaky zinc-based zinc-rich coating were introduced, including flaky zinc-based powder coating, zinc-based waterborne inorganic zinc-rich coating, flaky zinc-based alcohol-soluble inorganic zinc-rich coating and the zinc-rich coating based on spherical and flaky combination. It is considered that the flaky zinc-based power coating, flaky zinc-based waterborne/alcohol-soluble inorganic zinc-rich coating and the zinc-rich coating based on spherical and flaky combination are the development orientation in the future.
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    epoxy resin is one of the three-big film-former substances,which used in heavy-duty coatings,and whose structure chains determine their anticorrosive properties,therefore modification of epoxy resin is an important method of improving anticorrosive properties of epoxy paints systems.The modification methods and mechanisms of epoxy resins with high performances are reviewed,and a description is also given on their application heavy-duty coatings.
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    Metal coating
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    Water soluble
    Composite epoxy material
    The types and addition dose of zinc in the zinc-rich coating have a significant impact on the character of coating. Two types of the zinc powders and the amount of zinc were researched in this paper. It reveals that flaky zinc coating is better than the spherical zinc coating on corrosion performance, and the performance of the coating will be the best only when the solid content of zinc is reasonable. The results also show that optimal solid content of flaky zinc are 62.5%, 60% and 60.5% in the inorganic zinc-rich coating, epoxy zinc-rich coating and vinyl resin zinc-rich coating, respectively.
    Metal coating
    Epoxy resin was widely used in structural building because of the excellent performances.The kind and dosage of solidifier have great effects on the solidification and the mechanical performances of the epoxy resin mortar.So the solidifier is an important act to the epoxy resin.Many kinds of solidifiers used in structural building or studied in lab were introduced.And the developing aspect of solidifier was pointed out.
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