An alkaline silane-doped borate water-based environmental rust inhibitor for rebar surface treatment

Abstract

The invention belongs to the technical field of metal surface treatment and corrosion protection, and specifically discloses an alkaline silane-doped borate water-based environment-friendly rust inhibitor for screw steel surface treatment. The alkaline silane-doped borate ester water-based environmentally friendly rust inhibitor includes nano-scale modified alkaline silica sol, borate ester, bactericide, metal complexing agent and water. In the invention, water is used as the solvent, nano-scale modified alkaline silica sol is used as the main film-forming material, and borate is used as the repair agent and corrosion inhibitor of the film layer. When the system is in contact with the surface of the rebar, silicon and boron undergo a series of adsorption, polymerization, and hybridization reactions on the surface of the substrate, forming a dense organic-inorganic hybrid film doped with silicon and boron on the surface of the substrate, improving the rebar. rust resistance.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment and corrosion protection, and in particular relates to an alkaline silane-doped borate water-based environmental protection rust inhibitor for the surface treatment of screw steel. Background technique [0002] Hot-rolled ribbed steel, commonly known as rebar, is widely used in civil engineering construction such as houses, bridges, roads, etc., as large as highways, railways, bridges, culverts, tunnels, flood control, dams and other public facilities, as small as the foundation of housing construction. , beams, columns, walls, rebar are all indispensable structural materials. [0003] Construction steel, mainly rebar, occupies half of my country's steel production. At present, my country's rebar output is about 100 million tons per year. However, rebar is easy to rust during storage and transportation, especially in a humid and hot environment, a layer of loose rust will be forme...

AI Technical Summary

Problems solved by technology

However, the formation of the passivation film layer requires the rebar to be heated to 850°C and then immersed in the antirust agent, which is difficult to achieve in the actual process

Moreover, the invention does not characterize the corrosion resistance of the obtained rebar in the actual storage and transportation environment

[0006] Patent document CN101660151B discloses a steel antirust treatment solution and treatment method. The antirust treatment solution is composed of phosphoric acid, aluminum hydroxide, zinc oxide and other substances, and needs to be reacted at 250-300°C. The process is complicated and the production cost is high. , not suitable for promotional applications

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