Steel galvanized layer surface water treatment agent

Abstract

The invention discloses a steel galvanized layer surface water treatment agent. The steel galvanized layer surface water treatment agent consists of the following components in percentage by mass: 38-45% of water metal silicon acrylic resin, 5-10% of tetramethylsilane, 2-4% of ammonium metavanadate, 1-3% of sodium molybdate, 5-7% of coal tar, 8-10% of 98% concentrated sulfuric acid, 2-3% of 35% formalin, 1-2% of wetting agent, 1-2% of defoaming agent, 1-2% of potassium sorbate, and 23-25% of de-ionized water. The steel galvanized layer surface water treatment agent is excellent in material selection, adopts a scientific processing method to solve the problem of surface corrosion of a traditional steel galvanized layer, converts the surface rust to a useful passivation film, prevents the steel surface corrosion, is high in self-healing performance and excellent in construction performance, brakes at normal temperature or low temperature, is fast in drying, uses the de-ionized water as a dispersion medium, contains no chromic acid or dichromate, methylbenzene, ethylbenzene and dimethylbenzene, is low in VOC, is free of combustion, explosion and pollution, has the heavy metal content lower than the national compulsory standard, is free of pungent smell, is free of poison and harm to human bodies, and is prominent in environment benefit, economic benefit and social benefit.

Description

technical field [0001] The invention belongs to the technical field of treatment agents, and in particular relates to a water-based treatment agent for the surface of a steel galvanized layer. Background technique [0002] In the galvanizing process of the electroplating surface, in order to eliminate some defects generated during the galvanizing process, improve the decorative properties of the coating, improve the mechanical properties of the coating, especially to improve the corrosion resistance of the galvanized layer, after electroplating, the galvanized At present, most of the passivation processes in my country are treated with chromic acid or dichromate solution. This passivation process contains hexavalent chromium and trivalent chromium, which will cause serious harm to human health and the environment. For The various chromium-free treatment agents developed for the above-mentioned defects have unstable quality, poor self-healing performance, and fail to meet custo...

AI Technical Summary

Problems solved by technology

[0002] In the galvanizing process of the electroplating surface, in order to eliminate some defects generated during the galvanizing process, improve the decorative properties of the coating, improve the mechanical properties of the coating, especially to improve the corrosion resistance of the galvanized layer, after electroplating, the galvanized At present, most of the passivation processes in my country are treated with chromic acid or dichromate solution. This passivation process contains hexavalent chromium and trivalent chromium, which will cause serious harm to human health and the environment. For The various chromium-free treatment agents developed by the above-mentioned defects have unstable quality, poor self-healing performance, and fail to meet customer needs.