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Polymerizable amphoteric salt corrosion inhibitor and application thereof as carbon steel corrosion inhibitor

A Corrosion Inhibitor, Amphoteric Salt Technology

Active Publication Date: 2021-07-16
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are currently few types of ionic liquids used as corrosion inhibitors for carbon steel materials in acidic media, and the corrosion inhibition effect needs to be improved.

Method used

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  • Polymerizable amphoteric salt corrosion inhibitor and application thereof as carbon steel corrosion inhibitor
  • Polymerizable amphoteric salt corrosion inhibitor and application thereof as carbon steel corrosion inhibitor
  • Polymerizable amphoteric salt corrosion inhibitor and application thereof as carbon steel corrosion inhibitor

Examples

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Effect test

Embodiment 1

[0039] Example 1: The potentiodynamic polarization curve method was used to evaluate the corrosion inhibition performance of several corrosion inhibitors of the present invention. CHI660E electrochemical workstation was used for electrochemical test, using three-electrode system, 45# steel electrode was encapsulated with epoxy resin, and the working electrode area was 1cm 2 , Polished brightly by 2000# metallographic sandpaper. The reference electrode was a saturated calomel electrode (SCE), and the auxiliary electrode was a Pt sheet electrode. Using 200ml of hydrochloric acid solution with a concentration of 0.5mol / L as the medium, prepare 3-(1-vinyl-3-imidazolyl)propanesulfonate and poly-3-( 1-vinyl-3-imidazolyl) propane sulfonate (average degree of polymerization is 12) and total concentration is 5ppm, 10ppm, 50ppm, 100ppm corrosion inhibitor concentration is chlorinated 3-(1-ethylene Base-3-imidazolyl) propane sulfonate (average degree of polymerization is 21) solution, ...

Embodiment 2

[0042] Example 2: The electrochemical impedance method was used to evaluate the corrosion inhibition performance of several corrosion inhibitors of the present invention. CHI660E electrochemical workstation was used for electrochemical test, using three-electrode system, 45# steel electrode was encapsulated with epoxy resin, and the working electrode area was 1cm 2 , Polished brightly by 2000# metallographic sandpaper. The reference electrode was a saturated calomel electrode (SCE), and the auxiliary electrode was a Pt sheet electrode. Using 200ml of hydrochloric acid solution with a concentration of 0.5mol / L as the medium, prepare 3-(1-vinyl-3-imidazolyl)propanesulfonate and poly-3-( 1-vinyl-3-imidazolyl)propanesulfonate (average degree of polymerization is 12) and the corrosion inhibitor concentration of 5ppm, 10ppm, 50ppm, 100ppm is the chloride 3-(1- Vinyl-3-imidazolyl) propane sulfonate (average degree of polymerization is 21) solution, and then put into 45# carbon stee...

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Abstract

The invention provides polymerizable amphoteric salt 3-(1-vinyl-3-imidazolyl) propane sulfonate, polymerized amphoteric salt and polyion liquid to serve as a steel corrosion inhibitor; the polymerizable amphoteric salt 3-(1-vinyl-3-imidazolyl) propane sulfonate, the polymerized amphoteric salt and the polyion liquid have a good corrosion inhibition effect, are small in use amount, can effectively reduce cost, are non-toxic and harmless, and are novel environment-friendly corrosion inhibitors. The three corrosion inhibitors are used for corrosion inhibition of steel in a hydrochloric acid medium at room temperature.

Description

technical field [0001] The invention relates to a polymerizable amphoteric salt corrosion inhibitor, a polymeric amphoteric salt corrosion inhibitor, a polyionic liquid corrosion inhibitor and their applications, belonging to the technical field of corrosion inhibitors. Background technique [0002] Steel is one of the most important materials in production and life in today's society. It is widely used in chemical production, transportation, mechanical equipment, urban construction, etc. In the process of steel processing, many cases will go through pickling steps, which makes the steel inevitably corroded and consumed. In addition, some acidic media are often used in chemical production, causing equipment to be corroded and damaged to varying degrees, which seriously affects the service life of the equipment and even causes safety hazards. Therefore, it is particularly important to slow down and inhibit the corrosion of steel materials. [0003] Adding corrosion inhibito...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/06
CPCC23G1/065
Inventor 刘丹桂建舟王婧辉潘世光曹淑云刘成伟马爱静
Owner TIANJIN POLYTECHNIC UNIV