High-efficiency iron rust conversion agent

A conversion agent, rust technology, applied in the direction of metal material coating process, etc., can solve the problems of poor construction performance, low conversion efficiency and anti-corrosion performance of rust conversion agent, achieve high adhesion, prevent electrochemical corrosion, and broad market space Effect

Inactive Publication Date: 2012-08-01
ZHEJIANG OCEAN UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The problem to be solved by the present invention is to improve the poor construction per...

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  • High-efficiency iron rust conversion agent
  • High-efficiency iron rust conversion agent
  • High-efficiency iron rust conversion agent

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] A high-efficiency rust conversion agent is prepared from the following raw materials in mass ratio: 0.5% zinc oxide, 40% phosphoric acid, 0.5% potassium dichromate, 2% sodium phosphate, 1% hexamethamine, and 56% water.

[0018] The preparation method is: add deionized water, phosphoric acid, sodium phosphate, urotropine, zinc oxide and potassium dichromate into the glass according to the order and mass ratio under continuous stirring, and the above dissolution time is 10-20 minutes. .

[0019] The method of use of the present invention: use metal brushes, sandpaper and other mechanical methods to remove powder floating rust on the surface of the steel plate, and degrease if necessary. Apply the conversion agent to the surface of the steel plate by brushing or spraying. Air dry after application. This transforming agent needs 2-3 times to trans...

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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...

Claims

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Application Information

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IPC IPC(8): C23C22/33C23C22/04
Inventor 赵晓栋胡海燕袁跃峰杨婕王维
Owner ZHEJIANG OCEAN UNIV
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