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Steel corrosion inhibitor and preparation method thereof

A technology of corrosion inhibitor and steel, applied in the field of metal corrosion inhibition, can solve the problems of difficult to meet environmental protection, low toxicity and low cost, complex synthesis and preparation process, large environmental pollution load, etc., and achieves low cost, low dosage, Low environmental toxicity effect

Inactive Publication Date: 2018-07-20
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, common corrosion inhibitors often have problems such as toxic side effects, large environmental pollution load, complex synthesis and preparation process, and low corrosion inhibition efficiency, which are difficult to meet the requirements of environmental protection, low toxicity and low cost.

Method used

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  • Steel corrosion inhibitor and preparation method thereof
  • Steel corrosion inhibitor and preparation method thereof
  • Steel corrosion inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A steel corrosion inhibitor with 1,1-bis(benzothiazol-2-yl)-2-(N-benzylcarbazol-3-yl)ethylene as the core corrosion inhibitor component, according to the following weight percentage (w %) species composition: 1,1-bis(benzothiazol-2-yl)-2-(N-benzylcarbazol-3-yl)ethylene 2.0%, ethanol 5.0%, fatty alcohol polyoxyethylene ether sulfuric acid Sodium (AES) 0.5%, dispersant PEG 4001.5%, balance water 91.0%.

[0033] The preparation method of the corrosion inhibitor is as follows: at room temperature, take 50g of ethanol according to the above ratio and add it to a mixing tank, stirring tank or tank, then add 100g of water, and then weigh 1,1-bis(benzothiazol-2-yl) -20g of 2-(N-benzylcarbazol-3-yl)ethylene was added to the aqueous ethanol solution, then 5g of AES, 15g of PEG400 and 810g of the remaining water were added, and the corrosion inhibitor was obtained by stirring evenly.

[0034] This formula corrosion inhibitor is used for the corrosion inhibition test of steel: two...

Embodiment 2

[0036] A steel corrosion inhibitor with 1,1-bis(benzothiazol-2-yl)-2-(N-benzylcarbazol-3-yl)ethylene as the core corrosion inhibitor component, according to the following weight percentage (w %) species composition: 1,1-di(benzothiazol-2-yl)-2-(N-benzylcarbazol-3-yl)ethylene 4.0%, acetic acid 3.0%, sodium lauryl sulfate ( K12) 1.0%, dispersant PEG 200 2.0%, balance water 90.0%.

[0037] The preparation method of the corrosion inhibitor is as follows: at room temperature, weigh 30g of acetic acid according to the above ratio and add it to a mixing tank, stirring tank or tank, add 100g of water, stir and mix, then weigh 1,1-bis(benzothiazole-2 - Base)-2-(N-benzylcarbazol-3-yl)ethylene 40g was added to the above-mentioned aqueous solution of acetic acid, and then 10g of sodium lauryl sulfate (K12), 20g of dispersant PEG200 and 800g of remaining water were added , Stir evenly to get the corrosion inhibitor.

[0038] The corrosion inhibitor of this formula is used for the corrosi...

Embodiment 3

[0040] A steel corrosion inhibitor with 1,1-bis(benzothiazol-2-yl)-2-(N-benzylcarbazol-3-yl)ethylene as the core corrosion inhibitor component, according to the following weight percentage (w %) species composition: 1,1-bis(benzothiazol-2-yl)-2-(N-benzylcarbazol-3-yl)ethylene 2.5%, DMF 6.0%, fatty alcohol polyoxyethylene ether sulfuric acid Sodium (AES) 0.5%, PEG400 2.0%, balance water 89.0%.

[0041] The preparation method of the corrosion inhibitor is as follows: at room temperature, weigh 60g of DMF according to the above ratio and add it to a mixing tank, stirring tank or tank, add 150g of water, stir to make it completely dissolve, then weigh 1,1-bis(benzothiazole Add 25g of -2-yl)-2-(N-benzylcarbazol-3-yl)ethylene to the above DMF aqueous solution, then add 5g of AES, 20g of PEG400 and 740g of the remaining water, and stir well to obtain the corrosion inhibitor agent.

[0042] This formula corrosion inhibitor is used for the corrosion inhibition test of steel materials...

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Abstract

The invention discloses a steel corrosion inhibitor and a preparation method thereof, and belongs to the technical field of metal corrosion and protection. The corrosion inhibitor is prepared in the step of compounding 1,1-di(benzothiazole-2-group)-2-(N-benzylcarbazole-2-group)ethylene as a core corrosion inhibiting component with an organic solvent, surfactant, dispersant and water. The corrosioninhibitor has obvious anti-corrosion effects on various kinds of steel in all conditions of acid, alkali and salt. The steel corrosion inhibitor has the advantages of simple formula, simple and convenient preparation process, safety in operation, low toxicity, high efficiency and environmental friendliness.

Description

technical field [0001] The invention relates to a corrosion inhibitor with derivatives containing benzothiazole and carbazole structural units as the core corrosion inhibitor and its preparation method, specifically referring to 1,1-bis(benzothiazol-2-yl)- The invention discloses a corrosion inhibitor with 2-(N-benzylcarbazol-3-yl)ethylene as the core corrosion inhibition component and a preparation method thereof, belonging to the technical field of metal corrosion inhibition. Background technique [0002] The damage of metal by the surrounding environment medium is metal corrosion. Metal corrosion will greatly reduce its mechanical properties, destroy the geometry of metal components, increase wear between parts, and shorten the service life of equipment. Metal corrosion not only easily leads to a large loss of metal materials and great economic losses, but also may bring heavy metal pollution to the ecological environment. The environment where metal is in contact with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/16
CPCC23F11/165
Inventor 钱永钱磊
Owner SUZHOU UNIV OF SCI & TECH
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