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Surface treatment agent capable of generating brown stable rust layer

A surface treatment agent and a stable technology, applied in the field of surface treatment agents, can solve the problems of insufficient rust protection stability, and achieve the effects of excellent anti-rust liquid sag performance, dense color, and excellent metal protection performance.

Inactive Publication Date: 2018-04-13
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a surface treatment agent that generates a brown stable rust layer, which is suitable for bare steel coating, in view of the current requirements for the appearance and color of different rust layers and the insufficient protection stability of the rust layer obtained by the existing surface treatment agent. , can produce a brown uniform and stable rust layer on the bare steel surface, with excellent and stable anti-rust liquid sagging and anti-corrosion properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A surface treatment agent that generates a brown stable rust layer. The components and their mass percentages are: alcohol-soluble phenolic novolac 30%, NiSO 4 25%, CuSO 4 2%, Sodium Tungstate 3%, Trisodium Phosphate 5%, NaHSO 3 5%, methanol 30%, weigh each raw material according to the above ratio, and mix evenly, and prepare a surface treatment agent for forming a brown stable rust layer.

[0023] Coat the prepared surface treatment agent on the surface of weathering steel bare sample, and let it dry naturally; and accelerate the corrosion in distilled water environment for 10 days (spray distilled water every 3 hours), the surface of weathering steel bare sample without surface treatment The color of the rust layer is uneven, and the rust liquid hangs, and the corrosion rate increases with time; the rust layer on the surface of the weathering steel bare sample coated with the surface treatment agent is uniform brown, the rust liquid does not flow, and during the ...

Embodiment 2

[0026] A surface treatment agent that generates a brown stable rust layer, the components and their mass percentages are: alcohol-soluble phenolic novolac 32%, NiSO 4 22%, CuSO 4 3%, sodium tungstate 2%, trisodium phosphate 4%, NaHSO 3 6%, ethanol 31%, weigh each raw material according to the above ratio, and mix evenly, and prepare a surface treatment agent that generates a brown stable rust layer.

[0027] Coat the prepared surface treatment agent on the surface of weathering steel bare sample, and let it dry naturally; and accelerate the corrosion in distilled water environment for 10 days (spray distilled water every 3 hours), the surface of weathering steel bare sample without surface treatment The color of the rust layer is uneven, and the rust liquid hangs, and the corrosion rate increases with time; the rust layer on the surface of the weathering steel bare sample coated with the surface treatment agent is uniform brown, the rust liquid does not flow, and during th...

Embodiment 3

[0029] A surface treatment agent that generates a brown stable rust layer, the components and their mass percentages are: alcohol-soluble phenolic novolac 32%, NiSO 4 23%, CuSO 4 3%, sodium tungstate 2%, trisodium phosphate 3%, NaHSO 3 7%, ethanol 30%, weigh each raw material according to the above ratio, and mix evenly, and prepare the surface treatment agent that generates a brown stable rust layer.

[0030] Coat the prepared surface treatment agent on the surface of weathering steel bare sample, and let it dry naturally; and accelerate the corrosion in distilled water environment for 10 days (spray distilled water every 3 hours), the surface of weathering steel bare sample without surface treatment The color of the rust layer is uneven, and the rust liquid hangs, and the corrosion rate increases with time; the rust layer on the surface of the weathering steel bare sample coated with the surface treatment agent is uniform brown, the rust liquid does not flow, and during ...

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PUM

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Abstract

The invention discloses a surface treatment agent capable of generating a brown stable rust layer. The surface treatment agent is prepared from the following ingredients in percentage by mass: 30 to 35 percent of alcohol-soluble phenolic aldehyde varnish, 20 to 25 percent of NiSO4, 2 to 5 percent of CuSO4, 2 to 3 percent of sodium tungstate, 2 to 5 percent of trisodium orthophosphate, 5 to 10 percent of NaHSO3 and 28 to 33 percent of diluting solvents. The surface treatment agent is suitable for bare steel coating; after bare steel is coated with the surface treatment agent, a brown uniform and stable rust layer is generated on the surface; the long-time effective rust liquid flowing and hanging prevention and anti-corrosion performance is realized; in addition, the used surface treatmentagent does not have the strong pungent smell; chromium and nitrite are not contained; safety and environment protection are realized.

Description

technical field [0001] The invention belongs to the technical field of metal protection, in particular to a surface treatment agent for forming a brown stable rust layer. Background technique [0002] Metal corrosion is a failure process of metals under the action of environmental corrosive media. It is the inverse process of metallurgical production, and the entropy is constantly increasing. It is an inevitable natural phenomenon that occurs completely spontaneously. Atmospheric corrosion is an important cause of early failure and damage of products, equipment, devices, structural parts, etc., and the economic losses caused by atmospheric corrosion are serious every year. [0003] In the atmospheric natural environment, the formation of a stable protective rust layer on bare steel is a gradual process, which takes a long time, at least 3 years, and some bare steel surfaces form a dense and stable rust layer for more than 10 years. In the process of forming a stable rust la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C09D5/08C09D7/61C23C22/03
CPCC09D167/08C08K3/24C08K3/30C08K2003/3045C08K2003/324C09D5/08C23C22/03
Inventor 黄先球郎丰军彭浩程鹏庞涛马颖宋建红黄菲何锐王辉
Owner 武汉钢铁有限公司
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