High-efficiency iron rust conversion agent

Abstract

The utility model relates to a high-efficiency iron rust conversion agent, and belongs to the field of an antirust paint. The iron rust conversion agent comprises the following raw materials by weight: 0.1-10% of zinc oxide, 20-40% of phosphoric acid, 0.5-15% of dichromate, 0.5-10% of phosphate, 0.1-10% of corrosion inhibitor, and 50-70% of solvent, wherein the dichromate is potassium dichromate or sodium dichromate; the phosphate is sodium phosphate or potassium phosphate; the corrosion inhibitor is urotropine or urea; and the solvent is water or ethanol. The preparation method comprises the steps as follows: sequentially adding the solvent, the phosphoric acid, the dichromate, the phosphate, the corrosion inhibitor and the zinc oxide to a glass cup under persistently stirring according to the mass ratio, and dissolving for 10-20 min. The production method bases on the dissolving of the solid reactants in the phosphoric acid solution. The phosphorized film formed by iron rust conversion has the effects of preventing rust and fixing remnant rust, and the formed phosphorized layer protective film is long-acting, and stable in atmospheric environment, lubricating oil and organic solvent, has high adhesion, can be used as a primer, has dielectric properties, and can prevent electro-chemical corrosion on the metal surface.

Description

technical field [0001] The invention relates to a high-efficiency rust converting agent, which is mainly used for surface pretreatment of rusty steel materials and belongs to the field of antirust coatings. Background technique [0002] Surface preparation is a very important step before the metal protective coating is applied. The traditional rust removal and painting process is labor-intensive and investment-intensive, and the rust layer will also cause health damage to personnel and pollute the environment; there are also some steel components with complex structures, and it is difficult to use conventional rust removal methods. The use of rust conversion agent can save surface treatment processes such as rust removal, oil removal, and water removal, and significantly reduce the cost of painting. At the same time, it can also greatly simplify the painting process, thereby reducing labor intensity and reducing the harm of rust dust to the human body. An economical, conven...

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to improve the poor construction performance, conversion efficiency and low anti-corrosion performance of existing rust conversion agents.

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