Hydrotalcite intercalation chloride ion probe modified sulfydryl-containing thiadiazole anti-rusting composition and application thereof

A technology of chloride ion probes and mercaptothiadiazoles, which is applied in the field of rust inhibitors, can solve the problems of making high-efficiency useless on paper, weakening the application stability and long-term durability of rust inhibitors, and achieving excellent corrosion resistance. Rust performance, low cost of comprehensive application, and wide application range

Inactive Publication Date: 2018-05-08
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 sulfydryl-containing thiadiazole anti-rusting composition and application thereof

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Experimental program
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Effect test

Embodiment

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

[0038] The first step: prepare the thiadiazole 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 2-mercapto-5-substituted phenyl-1,3,4-thiadiazole polyether rust inhibitor (2.4×10 -3 mol / L), using 2.2 equivalents of HBr for protonation titration to prepare a chloride ion probe-modified intercalation precursor containing mercaptothiadiazole-based rust inhibitors.

[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 (OH) 2 ][(CO 3 ) 0.165 mH 2 O]+0.33N...

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Abstract

The invention relates to an anti-rusting agent and in particular to a hydrotalcite intercalation chloride ion probe modified sulfydryl-containing thiadiazole anti-rusting composition and application thereof. Through chloride ion probe modification and intercalation assembling, a chloride ion triggering switch for regulating and controlling release of a hydrosulfuryl thiadiazole type anti-rusting agent is embedded into zinc-aluminum hydrotalcite layers, and a composition is formed. The anti-rusting agent composition provided by the invention can be produced on scale, is capable of implementingresponse release to corrosive environments and repairing rusted carbon steel, in addition has a long-term protection function, is capable of implementing corrosion protection of carbon steel, and hasremarkable application values and wide market prospects.

Description

technical field [0001] The invention relates to a rust inhibitor, in particular to a hydrotalcite intercalation chlorine ion probe modified compound containing mercaptothiadiazole rust inhibitor 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 treatment of corrosive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/16C01G9/00C04B103/61
CPCC04B40/0046C01G9/006C04B2103/61C04B24/16C04B22/10
Inventor 田惠文李伟华刘昂侯保荣
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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