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Hydrotalcite intercalation chloride ion probe modified triazole corrosion inhibitor compound containing salicylaldehyde active group and application thereof

A technology of aldehyde active group triazole and chloride ion probe, which is applied in the field of triazole rust inhibitor compound containing salicylaldehyde active group, can solve the problem of high efficiency and weaken the application of rust inhibitor Stability and long-term durability and other issues, to achieve the effect of excellent rust resistance, low cost of comprehensive application, and simple preparation method

Inactive Publication Date: 2018-05-04
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The traditional research and development ideas of rust inhibitors are limited to the isolation and protection of the surface of steel bars, but have not yet focused on the treatment of corrosive media and the adaptation to the concrete body environment, which seriously weakens the application stability and long-term durability of rust inhibitors. , so that the performance of high efficiency is on paper

Method used

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  • Hydrotalcite intercalation chloride ion probe modified triazole corrosion inhibitor compound containing salicylaldehyde active group and application thereof

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Embodiment

[0037] Preparation of Triazole Corrosion Inhibitor Complex Modified by Hydrotalcite Intercalation Chloride Ion Probe

[0038] The first step: prepare the triazole precursor modified by chloride ion probe.

[0039] Press p-aminobenzoic acid in [N + -H...O] The molar ratio of hydrogen bond formation is added to the aqueous solution of salicylaldehyde [5-(methylphenyl) 1,3,4 triazole dimercapto] acetylhydrazone polyether rust inhibitor (2.4×10 -3 mol / L), using 2.2 equivalents of HBr for protonation titration to prepare the chloride ion probe-modified triazole rust inhibitor intercalation precursor containing salicylaldehyde active group.

[0040] The second step: the reaction formula of synthesizing zinc-aluminum hydrotalcite is as follows:

[0041] Zn(NO 3 ) 2 ·6H 2 O+2NaOH=Zn(OH) 2 ↓+2NaNO 3 +6H 2 O (1)

[0042] Al(NO 3 ) 3 9H 2 O+3NaOH=Al(OH) 3 ↓+3NaNO 3 +9H 2 O (2)

[0043] 0.67Zn(OH) 2 +0.33Al(OH) 3 +mH 2 O+0.165Na 2 CO 3

[0044] =[Zn 0.67 al 0.33 (O...

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Abstract

The invention relates to a corrosion inhibitor, in particular to a hydrotalcite intercalation chloride ion probe modified triazole corrosion inhibitor compound containing a salicylaldehyde active group and application thereof. Through chloride ion probe modification and intercalation assembly, a chloride ion trigger switch which can regulate and control release of a triazole corrosion inhibitor containing the salicylaldehyde active group is embedded between zinc-aluminum hydrotalcite layers, and the compound is formed. By adopting the corrosion inhibitor compound provided by the invention, mass production can be realized, release responding to a corrosion environment and repairing of corroded carbon steel can be realized, and the corrosion inhibitor compound has long-term protective effectand can effectively carry out corrosion protection on the carbon steel, so that the corrosion inhibitor compound provided by the invention has obvious application value and a broad market prospect.

Description

technical field [0001] The invention relates to a rust inhibitor, in particular to a hydrotalcite intercalation chlorine ion probe modified triazole rust inhibitor compound containing salicylaldehyde active group and application thereof. Background technique [0002] Reinforced concrete is the main material of coastal and offshore engineering construction. Under the marine corrosion environment, the corrosion of steel bars caused by the diffusion and penetration of high-concentration chloride ions is the crux of the degradation of concrete materials and structural performance. The application of organic migrating corrosion inhibitor (Migrating Corrosion Inhibitor, MCI) as a simple, economical and efficient steel anticorrosion material is the first choice for isolating chloride ion corrosion. [0003] The traditional research and development ideas of rust inhibitors are limited to the isolation and protection of the surface of steel bars, but have not yet focused on the treat...

Claims

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Application Information

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IPC IPC(8): C04B24/16C01G9/00C04B103/61
CPCC01G9/006C04B40/0046C04B2103/61C04B22/10C04B22/122C04B24/12C04B24/16
Inventor 田惠文李伟华刘昂侯保荣
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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