A kind of filler of MOF loaded corrosion inhibitor, self-repairing anti-corrosion coating and preparation method thereof

A technology of anti-corrosion coatings and corrosion inhibitors, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of poor dispersion of fillers, small application range, poor anti-corrosion effect, etc., to achieve easy dispersion, improve Anti-corrosion performance, avoiding the effect of sharp attenuation of self-healing function

Active Publication Date: 2022-05-20
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a MOF-loaded corrosion inhibitor filler, self-repairing anti-corrosion coating and preparation method thereof, so as to solve the problems of poor filler dispersion and poor anti-corrosion effect in existing anti-corrosion coatings. Good and technical problems with small application range

Method used

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  • A kind of filler of MOF loaded corrosion inhibitor, self-repairing anti-corrosion coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] 1. A preparation method of a metal-organic framework compound-loaded corrosion inhibitor filler

[0026] 1) Add 0.004 mol copper nitrate trihydrate (Cu(NO 3 ) 2 ·3H 2 O) Dissolve in 100 mL of deionized water, slowly add 10 mL of an aqueous solution containing 0.008 mol of hexamethylenetetramine dropwise under stirring at room temperature, continue stirring for 30 minutes, then add 0.004 mol of terephthalic acid, stir and disperse evenly, Transfer to a polytetrafluoroethylene reactor, seal it and place it in an oven at 150°C for 48 hours to react, stop the reaction, filter the solid in the reactor, and dry the filter cake at 100°C for 12 hours to obtain the metal organic framework compound hmt-MOF.

[0027] 2) At room temperature, disperse 1.0 g hmt-MOF in a mixed solvent of 20 mL deionized water and ethanol (v : v = 1 : 1), add 0.03 g hexamethylenetetramine under stirring conditions, and continue stirring After standing still for 10 hours, filter, wash the filter cak...

Embodiment 2

[0033] 1. A preparation method of a metal-organic framework compound-loaded corrosion inhibitor filler

[0034] 1) Add 0.005 mol nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O) Dissolve in 100 mL of deionized water, slowly add 10 mL of an aqueous solution containing 0.01 mol of hexamethylenetetramine dropwise under stirring at room temperature, continue stirring for 30 minutes, then add 0.0075 mol of terephthalic acid, stir and disperse evenly, Transfer it to a polytetrafluoroethylene reactor, seal it and place it in an oven at 170°C for 56 hours to react, stop the reaction, filter the solid in the reactor, and dry the filter cake at 100°C for 12 hours to obtain the metal organic framework compound hmt-MOF.

[0035] 2) Disperse 1 g hmt-MOF in a mixed solvent of 30 mL deionized water and ethanol (v : v = 1 : 1) at room temperature, add 0.03 g hexamethylenetetramine under stirring conditions, and continue stirring After standing still for 12 hours, filter, wash the filter ca...

Embodiment 3

[0041] 1. A preparation method of a metal-organic framework compound-loaded corrosion inhibitor filler

[0042] 1) Add 0.006 mol nickel chloride hexahydrate (NiCl 2 ·6H 2 O) Dissolve in 100 mL of deionized water, slowly add 10 mL of an aqueous solution containing 0.012 mol of hexamethylenetetramine dropwise under stirring at room temperature, continue stirring for 30 minutes, then add 0.008 mol of terephthalic acid, stir and disperse evenly, Transfer to a polytetrafluoroethylene reactor, seal it and put it in an oven at 170°C for 65 hours to react, stop the reaction, filter the solid in the reactor, and dry the filter cake at 100°C for 12 hours to obtain the metal organic framework compound hmt-MOF.

[0043] 2) Disperse 1 g hmt-MOF in a mixed solvent of 30 mL deionized water and ethanol (v : v = 1 : 1) at room temperature, add 0.07 g 2-methylimidazole under stirring conditions, and continue stirring for 14 h , after standing still for a period of time, filtered, the filter c...

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Abstract

The invention discloses a MOF-loaded corrosion inhibitor filler, a self-repairing anti-corrosion coating and a preparation method thereof. The filler uses a metal-organic framework compound hmt-MOF as a capsule shell and a corrosion inhibitor encapsulated as a capsule core , the hmt‑MOF complex is assembled from two organic multidentate ligands, hexamethylenetetramine and terephthalic acid, the amine nitrogen atom in hexamethylenetetramine and the carboxyl oxygen in terephthalic acid atoms, can react with the functional groups in the resin, has good compatibility, is easy to disperse, and has high storage stability, and the complex can react with the metal substrate to form ‑N / O coordination bonds, hydrogen bonds, etc. , enhance the adhesion and anti-corrosion performance of the coating and the substrate, and can maintain a high self-healing function in an acid-base environment for a long time. The raw material of the invention is easy to obtain and has low toxicity, the production process is simple, easy to prepare, conforms to the development trend of green environmental protection, can be produced in large scale industrialization, and has good application prospect.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to a MOF loaded corrosion inhibitor filler, a self-repairing anti-corrosion coating and a preparation method thereof. Background technique [0002] Metal corrosion refers to the chemical, electrochemical or physical interaction between the metal and its surrounding medium, causing the metal to deteriorate and deteriorate. As a safety and economic problem, metal corrosion has attracted the attention of many countries. Metal corrosion will not only cause serious economic losses, but also affect human health. According to the statistics of corrosion protection organizations, the annual economic loss caused by metal corrosion in my country accounts for about 4% of the gross national product, and the corrosion loss in my country exceeds 2 trillion yuan, which is four times the loss of natural disasters. In order to avoid the serious consequences of metal corrosion, peopl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/02C09D5/08
CPCC09D163/00C09D5/08C08K9/12C08K5/3477C08K5/3445
Inventor 李明田董银霞杨洁崔学军张颖君
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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