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2-mercaptobenzimidazole/polyaniline anticorrosion composite material and preparation method thereof

A technology of mercaptobenzimidazole and composite materials, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of poor mechanical properties, low solubility, hindering applications, etc., and achieve poor mechanical properties and controllable process , Improve the effect of processing performance

Inactive Publication Date: 2015-07-29
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as an anti-corrosion coating film, polyaniline has the disadvantages of poor mechanical properties, low solubility, and poor dispersion in the coating film, which hinders its application in large-scale industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take 5.02mL of concentrated HCl (that is, HCl solution with a concentration of not less than 37% by mass) and dissolve it in 80mL of deionized water, and stir to completely dissolve it. Weigh 0.4506 g of 2-mercaptobenzimidazole and add it into the above HCl solution, after mechanically stirring for 2 hours, add 0.9 mL of aniline and continue stirring at high speed for 1 hour. Dissolve 2.28g of ammonium persulfate (that is, APS) in 20mL of deionized water, stir until dissolved, then slowly add it dropwise into the reaction system with a dropping funnel, keep the temperature at about 25°C, and react for 5 hours. After the reaction, the obtained product was alternately washed with ethanol and deionized water until neutral, then suction-filtered, and vacuum-dried at 60° C. for 12 hours to obtain 2-mercaptobenzimidazole / polyaniline nanofibers.

[0037] The prepared 2-mercaptobenzimidazole / polyaniline nanofiber, epoxy resin, dispersant and n-butanol are mixed in parts by mass...

Embodiment 2

[0039] Dissolve 5.02mL of concentrated HCl in 80mL of deionized water and stir to dissolve it completely. Weighed 0.2253 g of 2-mercaptobenzimidazole and added it to the above HCl solution, stirred mechanically for 2 hours, then added 0.9 mL of aniline and continued stirring at high speed for 1 hour. Dissolve 2.28g of ammonium persulfate (that is, APS) in 20mL of deionized water, stir until dissolved, then slowly add it dropwise into the reaction system with a dropping funnel, keep the temperature at about 25°C, and react for 5 hours. After the reaction, the obtained product was alternately washed with ethanol and deionized water until neutral, then suction-filtered, and vacuum-dried at 60° C. for 12 hours to obtain a 2-mercaptobenzimidazole / polyaniline complex.

[0040] The prepared 2-mercaptobenzimidazole / polyaniline nanofiber, epoxy resin, dispersant and n-butanol are mixed in parts by mass 8:80:2:10 to obtain component A, and the curing agent and n-butanol Mix evenly at a...

Embodiment 3

[0042] Dissolve 7.53mL of concentrated HCl in 80mL of deionized water and stir to dissolve it completely. Weigh 0.4506 g of 2-mercaptobenzimidazole and add it into the above HCl solution, after mechanically stirring for 2 hours, add 0.9 mL of aniline and continue stirring at high speed for 1 hour. Dissolve 2.28g of ammonium persulfate (that is, APS) in 20mL of deionized water, stir until dissolved, then slowly add it dropwise into the reaction system with a dropping funnel, keep the temperature at about 25°C, and react for 5 hours. After the reaction, the obtained product was alternately washed with ethanol and deionized water until neutral, then suction-filtered, and vacuum-dried at 60° C. for 12 hours to obtain a 2-mercaptobenzimidazole / polyaniline complex.

[0043]The prepared 2-mercaptobenzimidazole / polyaniline nanofiber, epoxy resin, dispersant and n-butanol are mixed in parts by mass 8:80:2:10 to obtain component A, and the curing agent and n-butanol Mix evenly at a rat...

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Abstract

The invention relates to a preparation method of a nitrogen-containing organic compound for inhibiting chemical change, and in particular relates to a preparation method of a 2-mercapto benzimidazole / polyaniline anticorrosion composite material. The preparation method of the 2-mercapto benzimidazole / polyaniline anticorrosion composite material is implemented by adopting an oxidization polymerization method. The preparation method is characterized by comprising the following steps of a, firstly, weighing acid; b, dissolving 2-mercapto benzimidazole / polyaniline in acid; c, adding ammonium persulfate solution to be reacted; and d, carrying out suction filtration and completing the preparation. The preparation process is safe and is suitable for large-scale industrial production, and the 2-mercapto benzimidazole / polyaniline anticorrosion composite material is strong in corrosion resistance and high in mechanical performance.

Description

technical field [0001] The invention relates to a preparation method of a nitrogen-containing organic compound for inhibiting chemical changes, in particular to a preparation method of a 2-mercaptobenzimidazole / polyaniline anticorrosion material. Background technique [0002] Metal materials are widely used in ships, automobiles, aircraft, buildings and various mechanical equipment. However, affected by the environment, metals will corrode due to factors such as acid, alkali, and humidity. The traditional protection of metal equipment is mainly based on the coating of anti-corrosion coatings. In the 1980s, De Berry (De Berry) found that the polyaniline film synthesized by electrochemical method in acidic medium can passivate the surface of stainless steel. And it has corrosion resistance. Since then, people have started the application research of conductive polymer film in the field of corrosion protection according to this discovery. Polyaniline (PANi) is a kind of condu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C09D163/00C09D179/02C09D7/12C09D5/08
Inventor 王晓岗张星李原芃赵超
Owner TONGJI UNIV