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Copper corrosion inhibitor based on metal organic frame material MOFs and preparation method thereof

A metal-organic framework and copper corrosion inhibitor technology, which is applied in the field of copper corrosion inhibitors, can solve the problems of few types of copper corrosion inhibitors and low corrosion inhibition performance, and achieve significant corrosion inhibition effects, small dosage, and corrosion inhibition effects

Active Publication Date: 2019-08-16
HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few types of copper corrosion inhibitors, and most of them have low corrosion inhibition performance; and corrosion inhibitors with better corrosion inhibition performance on copper, such as benzotriazole, etc., have certain toxicity, so there is an urgent need for a kind of corrosion inhibitor in the market. Excellent corrosion performance, green and environmentally friendly copper corrosion inhibitor

Method used

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  • Copper corrosion inhibitor based on metal organic frame material MOFs and preparation method thereof
  • Copper corrosion inhibitor based on metal organic frame material MOFs and preparation method thereof
  • Copper corrosion inhibitor based on metal organic frame material MOFs and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Put 56 grams of zinc nitrate, 50 grams of 2-aminobenzimidazole and 800 mL of N, N-dimethylformamide into a beaker and stir to dissolve them. After mixing evenly, transfer them to a closed hydrothermal kettle for a heated solvothermal reaction , when the reaction temperature reaches 80°C, maintain the temperature for 1 hour; continue to raise the temperature to 140°C, maintain the temperature for 24 hours to obtain aminobenzimidazole / Zn 2+ MOFs. Add 20 grams of aminobenzimidazole / Zn prepared above in the beaker 2+ MOFs, 40 grams of isopropanol, and 40 grams of N,N-dimethylformamide to obtain 100 grams of copper corrosion inhibitor.

[0030] Corrosion inhibition performance evaluation:

[0031] At 25°C, in 0.5M NaCl solution, the corrosion inhibition performance of the copper corrosion inhibitor of the present invention on red copper was evaluated by the weight loss test method, and the weight loss test time was 72 hours. Table 1 shows the comparative evaluation result...

Embodiment 2

[0036] Put 28 grams of zinc sulfate, 60 grams of 2-aminobenzimidazole and 700 mL of N, N-dimethylformamide into a beaker and stir to dissolve them. After mixing evenly, transfer them to a closed hydrothermal kettle for a heated solvothermal reaction. , when the reaction temperature reaches 60°C, maintain the temperature for 0.5 hours; continue to raise the temperature to 120°C, maintain the temperature for 18 hours to obtain aminobenzimidazole / Zn 2+ MOFs.

[0037] Add 40 grams of aminobenzimidazole / Zn prepared above in the beaker 2+ MOFs, 30 grams of methanol, 30 grams of formamide to obtain 100 grams of copper corrosion inhibitor.

[0038] Corrosion inhibition performance evaluation:

[0039] At 50°C, in 0.3M NaCl solution, the corrosion inhibition performance of the copper corrosion inhibitor of the present invention on red copper was evaluated by the weight loss test method, and the weight loss test time was 72 hours. Table 2 shows the comparative evaluation results of t...

Embodiment 3

[0044] Put 60 grams of zinc nitrate, 65 grams of 2-aminobenzimidazole and 1000 mL of N, N-dimethylformamide into a beaker and stir to dissolve them. After mixing evenly, transfer them to a closed hydrothermal kettle for a heated solvothermal reaction. , when the reaction temperature reaches 90°C, maintain the temperature for 2 hours; continue to raise the temperature to 160°C, maintain the temperature for 36 hours to obtain aminobenzimidazole / Zn 2+ MOFs.

[0045] Add 30 grams of aminobenzimidazole / Zn prepared above in the beaker 2+ MOFs, 40 grams of ethanol, 30 grams of formamide to obtain 100 grams of copper corrosion inhibitor.

[0046] Corrosion inhibition performance evaluation:

[0047] At 60°C, in 0.2M NaCl solution, the corrosion inhibition performance of the copper corrosion inhibitor of the present invention on red copper was evaluated by the weight loss test method, and the weight loss test time was 72 hours. Table 3 shows the comparative evaluation results of the...

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Abstract

The invention belongs to the field of metal material corrosion inhibitors, and discloses a copper corrosion inhibitor based on metal organic frame material MOFs and a preparation method thereof. The copper corrosion inhibitor is prepared from the components in part by weight: 20-40 parts of aminobenzimidazole / Zn<2+>MOFs, 30-50 parts of small molecule alcohol with a molecular weight not exceeding 60, and 10-40 parts of strong polarity organic solvent, polarity of the strong polarity organic solvent is not weaker than hexamethylphosphamide, wherein the aminobenzimidazole / Zn<2+>MOFs have a structural formula shown in the following equation (I). According to the copper corrosion inhibitor based on the metal organic frame material MOFs and the preparation method thereof, key main materials of the copper corrosion inhibitor are improved, the aminobenzimidazole / Zn<2+>MOFs are used as the main materials, the characteristics of strong hydrophobicity of an adsorption group and structural stability of the aminobenzimidazole / Zn<2+>MOFs are used, and the good corrosion inhibition effect on a copper elementary substance or copper alloy materials is realized.

Description

technical field [0001] The invention belongs to the field of corrosion inhibitors for metal materials, and more specifically relates to a copper corrosion inhibitor based on metal organic framework materials MOFs and a preparation method thereof. The copper corrosion inhibitor is specifically a metal organic framework material MOFs as the main body Composition copper corrosion inhibitor. Background technique [0002] Copper is widely used as a structural material because of its excellent electrical and thermal conductivity and easy processing. However, copper is susceptible to corrosion during use, especially in a solution containing chloride ions, which is extremely susceptible to pitting corrosion, resulting in structural damage. Adding corrosion inhibitors to corrosive media is the most convenient, efficient and economical means of inhibiting material corrosion, and has been widely used in industry at present. However, there are few types of copper corrosion inhibitors,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/10C08G83/00
CPCC08G83/008C23F11/10
Inventor 陈振宇曹娇娇魏莉莎岑宏宇
Owner HUAZHONG UNIV OF SCI & TECH
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