Stabilization promoter for rust layer of weather-resisting steel and application method

A stabilization accelerator and weather-resistant steel technology, applied in coatings, anti-corrosion coatings, etc., can solve problems such as inapplicability, achieve the effects of reducing costs, speeding up stabilization, and improving corrosion resistance

Active Publication Date: 2018-01-09
NANJING TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current processing methods have more or less problems and are not suitable for the current situation.

Method used

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  • Stabilization promoter for rust layer of weather-resisting steel and application method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Wherein the main agent is 35% by mass of polyvinyl butyral resin; Accelerator A is 5% by mass of ferric oxide; Modifier is 7.9% by mass of chromium sulfate; Rust inhibitor is 2.8% by mass Sodium molybdate; Complexing agent is the mixture of 1.2% mass parts tannins and lactic acid, the mass ratio of tannins and lactic acid is 1:0.1; Adjuvant is 16.5% mass parts barium sulfate; Initiator is 1% The mass part is iron red, and the balance is water.

[0032] The method for using the weathering steel rust layer stabilization accelerator includes the following steps:

[0033] Step 1: Select a finished sample of weathering steel of a certain size. After degreasing with acetone, clean it with absolute ethanol and dry it for later use. Shot peen the surface of the weathering steel to be treated, using shot materials such as glass beads and ceramic beads Or steel balls, etc., quickly hit the surface of the weathering steel to change the stress state of the surface, and at the same...

Embodiment 2

[0037] Wherein the main agent is 47% by mass of polyvinyl butyral resin; accelerator A is 1% by mass of ferric oxide; modifier is 8.5% by mass of chromium sulfate; rust inhibitor is 0.6% by mass Sodium molybdate; The complexing agent is a mixture of 3.8% by mass of tannin and lactic acid, and the mass ratio of tannin and lactic acid is 1:2; the auxiliary agent is 15.3% by mass (specific value) barium sulfate; the initiator is 1.5% by mass (specific value) iron red, the balance is water.

[0038] Concrete implementation steps are the same as embodiment 1

Embodiment 3

[0040] Wherein the main agent is 40% by mass of polyvinyl butyral resin; accelerator A is 3% by mass of ferric oxide; modifier is 8.2% by mass of chromium sulfate; rust inhibitor is 1.5% by mass Sodium molybdate; Complexing agent is the mixture of 2% mass parts tannins and lactic acid, the mass ratio of tannins and lactic acid is 1:1.2; Adjuvant is 15.8% mass parts barium sulfate; Initiator is 1.2% The mass part is iron red, and the balance is water.

[0041]Concrete implementation steps are the same as embodiment 1

[0042] Finally, the weekly immersion corrosion test was carried out on the sample coated with the rust stabilizer, and the weight loss corrosion rate and electrochemical analysis of the rust layer were carried out on the sample after the experiment. Through experiments, it can be concluded that after the smear is applied on the surface, the total weight of the specimen increases compared with the bare state, and the corrosion rate of the weathering steel is also...

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Abstract

The invention discloses a stabilization promoter for a rust layer of weather-resisting steel and an application method. The stabilization promoter is prepared from the following components in parts bymass: 35 percent to 47 percent of a main agent, 1 percent to 5 percent of a promoter A, 7.9 percent to 8.5 percent of a modifier, 0.6 percent to 2.8 percent of a rust inhibitor, 1.2 percent to 3.8 percent of a complexing agent, 15.3 percent to 16.5 percent of an auxiliary agent, 1.0 percent to 1.5 percent of an initiator and the balance of a solvent. The stabilization promoter for the rust layerof the weather-resisting steel, disclosed by the invention, has the advantages that a preparation technology is simple to operate, and the cost is low; the stabilization promoter is brushed in a utilization process, and an additional treatment step is not needed; a formed coating can be cured under a room-temperature condition, and the curing time is short. Moreover, the corrosion resistance of aweather-resisting steel matrix also can be improved, a surface rust liquid sagging phenomenon is improved, and the pollution to the environment is reduced. The stabilization speed of the rust layer isaccelerated by adopting a method of smearing treatment liquid on the surface of the weather-resisting steel, a very good protection effect on rusting of the steel can be realized, and influences, caused by the fact that the treatment liquid is sprayed, to the environment can also be reduced, so that the actual construction cost is reduced, and the construction speed can be improved at the same time.

Description

technical field [0001] The invention relates to a weather-resistant steel protective agent, in particular to a weather-resistant steel rust layer stabilization accelerator and a use method. Background technique [0002] Compared with ordinary carbon steel, weathering steel has very good atmospheric corrosion resistance. The basic principle is that during use, a dense and stable rust layer is formed on the surface of weathering steel, which hinders corrosion entry of the medium. Relatively speaking, the rust layer formed on the surface of ordinary carbon steel is not very dense, and there are tiny cracks, so it cannot protect the internal steel from rust. To put it simply, in order to achieve a good anti-corrosion effect of weathering steel, it is necessary to quickly form a layer of rust on the surface of the steel, so as to exert a good protective effect on the internal matrix. [0003] The most widely used method of weathering steel in normal application is bare use. Ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D129/14C09D5/08C09D7/61
Inventor 张建东金文刚朱效洲王枭邓治国解卫江蔡水秀强白亮肖耀辉梁博
Owner NANJING TECH UNIV
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