Galvanized steel sheet excellent in surface abrasion resistance, corrosion resistance and acid and base resistance and water-based surface treating agent

Abstract

The invention relates to a galvanized steel sheet excellent in surface abrasion resistance, corrosion resistance and acid and base resistance and a water-based surface treating agent. The surface of a galvanized steel sheet is coated with the surface treating agent in a solidified mode, wherein the surface treating agent includes water-based positive ion polyurethane composite resin, compound organic silane coupling agents containing bis-organic silane coupling agents and mono-organic silane coupling agents, compound lubrication particles containing teflon-surface modification high-density polyethylene particles, oxidized graphene, water-soluble fluorine-containing compounds, water-soluble phosphorous compounds, water-soluble rare earth salt compounds and other components, and therefore the surface treatment galvanized steel sheet excellent in surface abrasion resistance, corrosion resistance and acid and base resistance is obtained. Meanwhile, the surface treatment galvanized steel sheet has good resistance, such as solvent resistance, to all kinds of chemical media.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of metal materials, and in particular relates to a galvanized steel sheet with excellent surface wear resistance, corrosion resistance and acid and alkali resistance and a water-based surface treatment agent. Background technique [0002] Galvanized steel sheets are widely used in various fields such as automobiles, home appliances, and construction, and are mostly used as parts of automobiles, home appliances, and OA products. However, during the storage, transportation, processing and use of galvanized steel sheets, there are several key issues that need attention. For example, in order to prevent the galvanized steel sheets from rusting and producing white rust during transportation and storage, anti-rust oil should be applied when producing steel sheets; Reduce the friction between the mold and the plate during the stamping forming process, prevent the plate from cracking and the sur...

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Problems solved by technology

At the same time, the atoms of graphene are connected by carbon-carbon covalent bonds, and the van der Waals force is between the sheets, so the sheets are easy to slide each other, with excellent mechanical properties and self-lubricating properties, so graphene can Play the role of enhancing wear resistance, however, due to the strong van der Waals force between graphene sheets and sheets, sheet agglomeration easily occurs between graphene sheets during the use of graphene, and in aqueous systems Larger aggregates are formed in the water-based system, and precipitates rapidly in the water-based system, so that the purpose of increasing the mechanical strength and wear resistance of the system cannot be achieved

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