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Gemini quaternary ammonium base cation corrosion inhibitor and application thereof

A technology of corrosion inhibitor and gemini quaternary ammonium, applied in the field of cation, can solve the problems of difficult penetration of rust inhibitor and unsatisfactory application effect, and achieve the effects of accelerated migration and enrichment, more chargeability, and stable molecular structure.

Active Publication Date: 2016-09-07
JIANGSU SOBUTE NEW MATERIALS
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  • Abstract
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  • Claims
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Problems solved by technology

However, in actual engineering, due to the high density of concrete, it is difficult for the rust inhibitor to penetrate into the steel surface with a thick protective layer, and the application effect is not ideal.

Method used

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  • Gemini quaternary ammonium base cation corrosion inhibitor and application thereof
  • Gemini quaternary ammonium base cation corrosion inhibitor and application thereof
  • Gemini quaternary ammonium base cation corrosion inhibitor and application thereof

Examples

Experimental program
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Embodiment Construction

[0021] Below by embodiment the present invention is further described:

[0022] The test was carried out in two parts: the migration performance of corrosion inhibitors and the corrosion resistance performance of steel bars.

[0023] Corrosion protection and repair performance evaluation of steel bars:

[0024] The effect of the synthesized compounds on the corrosion performance of steel bars was tested in simulated pore fluid of concrete. The test solution is a saturated calcium hydroxide solution containing 3.5% sodium chloride by mass fraction, adding a rust inhibitor with a mass fraction of 0.5%, using a flat corrosion cell and electrochemical linear polarization test technology to measure the corrosion potential and current density over time According to the law, the antirust efficiency of the compound can be known through the curve. The blank is the control group, S1 is n=1, R 1 , R 2 , R 3 The same is methyl; S2 is n=2, R 1 , R 2 Same, both ethyl, R 3 For hydrox...

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PUM

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Abstract

The invention discloses a gemini quaternary ammonium base cation corrosion inhibitor and an application thereof, and specifically discloses use of gemini quaternary ammonium base cation in corrosion protection and repair of reinforcing steel bars in a concrete structure. The gemini quaternary ammonium base cation corrosion inhibitor is a compound with a quaternary ammonium base cation structure. The corrosion inhibitor can be used as an internal doping corrosion inhibitor, directly acts to the surface of the reinforcing steel bars, also can promote migration of quaternary ammonium base cations by virtue of action of external electric fields, so that the quaternary ammonium base cations are enriched around the reinforcing steel bars, and the reinforcing steel bars are effectively protected. The gemini quaternary ammonium base cation corrosion inhibitor disclosed by the invention is strong in molecule charge, is high in electromigration efficiency, is stable in molecular structure, does not change along with changes of a concrete internal environment, can effectively prevent and repair corrosion of the concrete reinforcing steel bars of a built structure, and has a remarkable application value and a remarkable market prospect.

Description

technical field [0001] The invention relates to a material for steel bar corrosion protection and repair and its application, especially a cation with a gemini quaternary ammonium base molecular structure, which can be used in newly-built reinforced concrete structures, and can also be used as an electromigration type rust inhibitor. Application in built reinforced concrete structures. Background technique [0002] As one of the most important reasons for the damage of reinforced concrete structures, the corrosion of steel bars has become a hot problem in the scientific and engineering circles all over the world. Around the protection and repair of steel bars in concrete structures, many methods have been applied, including epoxy coatings, concrete external protective coatings, electrochemical protection and repair technologies, and steel bar rust inhibitors. However, the epoxy coating is easy to be damaged during construction, aggravating the corrosion of steel bars, and t...

Claims

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Application Information

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IPC IPC(8): C23F11/14C04B24/12C04B103/61
CPCC04B24/121C04B24/122C04B24/123C04B2103/61C23F11/141
Inventor 刘建忠蔡景顺石亮赵旦
Owner JIANGSU SOBUTE NEW MATERIALS
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