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MOF loaded corrosion inhibitor filler, self-repairing anticorrosive 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 anti-corrosion effect, small application range, poor dispersion of fillers, etc., and achieve the function of avoiding self-healing Effects of sharp attenuation, improvement of anti-corrosion performance, and easy dispersion

Active Publication Date: 2021-03-19
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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  • MOF loaded corrosion inhibitor filler, self-repairing anticorrosive coating and preparation method thereof

Examples

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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) Disperse 1.0 g hmt-MOF in a mixed solvent of 20 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 10 hours, filter, wash the filter cake...

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 an MOF loaded corrosion inhibitor filler, a self-repairing anticorrosive coating and a preparation method thereof. The filler takes a metal organic framework compound hmt-MOF as a capsule shell and an encapsulated corrosion inhibitor as a capsule core, and an hmt-MOF compound is formed by assembling two organic polydentate ligands including hexamethylenetetramine and terephthalic acid; amino nitrogen atoms in hexamethylenetetramine and carboxyl oxygen atoms in terephthalic acid can react with functional groups in resin, compatibility is good, dispersion is easy, high storage stability is achieved, and the compound can react with a metal substrate to generate -N / O coordination bonds, hydrogen bonds and the like; and the adhesive force and the corrosion resistance ofthe coating and the substrate are enhanced, and a high self-repairing function can be kept for a long time in an acid-base environment. The raw materials are easy to obtain and low in toxicity, the production technological process is simple, preparation is easy, the trend of green and environment-friendly development is met, large-scale industrial production can be achieved, and good application prospects are achieved.

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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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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