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A kind of amidation modified graphene oxide and preparation method and application thereof

A technology of oxidized stone and amidation, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of high equipment and process operation requirements, harsh reaction conditions, etc., to improve physical barrier ability, simple and convenient operation , the effect of good dispersion stability

Active Publication Date: 2022-01-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation reaction experiment of the main product functionalized graphene oxide needs to be carried out under the protection of nitrogen gas and at a higher temperature (150-200°C). The reaction conditions are relatively harsh, and the requirements for equipment and process operations are relatively high.

Method used

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  • A kind of amidation modified graphene oxide and preparation method and application thereof
  • A kind of amidation modified graphene oxide and preparation method and application thereof
  • A kind of amidation modified graphene oxide and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of amidation modified graphene oxide (fGO), adopts following technical scheme to prepare:

[0030] Dissolve graphene oxide in ethanol, the concentration of graphene oxide in ethanol is 1mg / mL; 100W power ultrasonic treatment for 1 hour to fully disperse graphene oxide, and then transfer it to a round bottom flask. Weigh 2-aminobenzimidazole, slowly add it to the graphene oxide suspension, the optimal mass ratio of graphene oxide to 2-aminobenzimidazole is 1:10; magnetically stir at 65°C and heat for 48 hours to obtain Uniformly dispersed black suspension; cooled to room temperature, suction filtered, and repeatedly washed with ethanol; the obtained filter cake was placed in a vacuum drying oven, and vacuum-dried at 50°C for 24 hours to obtain amidated modified graphene oxide.

Embodiment 2

[0032] A kind of amidation modified graphene oxide (fGO), adopts following technical scheme to prepare:

[0033] Dissolve graphene oxide in DMF, the concentration of graphene oxide in DMF is 2mg / mL; 120W power ultrasonic treatment for 1 hour to fully disperse graphene oxide, and then transfer it to a round bottom flask. Weigh 2-aminobenzimidazole, slowly add it into the graphene oxide suspension, the optimal mass ratio of graphene oxide to 2-aminobenzimidazole is 1:8; magnetically stir at 70°C for 38 hours and heat to react to obtain Uniformly dispersed black suspension; cooled to room temperature, suction filtered, and repeatedly washed with ethanol; the obtained filter cake was placed in a vacuum drying oven, and vacuum-dried at 45°C for 24 hours to obtain amidated modified graphene oxide.

Embodiment 3

[0035] A kind of amidation modified graphene oxide (fGO), adopts following technical scheme to prepare:

[0036] Dissolve graphene oxide in ethanol, the concentration of graphene oxide in ethanol is 0.5mg / mL; 100W power ultrasonic treatment for 1 hour to fully disperse graphene oxide, and then transfer it to a round bottom flask. Weigh 2-aminobenzimidazole, slowly add it into the graphene oxide suspension, the optimal mass ratio of graphene oxide and 2-aminobenzimidazole is 1:12; magnetically stir at 60°C and heat for 40 hours to obtain Uniformly dispersed black suspension; cooled to room temperature, suction filtered, and repeatedly washed with ethanol; the obtained filter cake was placed in a vacuum drying oven, and vacuum-dried at 50°C for 24 hours to obtain amidated modified graphene oxide.

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Abstract

The invention discloses an amidated modified graphene oxide and a preparation method and application thereof. The graphene oxide is taken, dissolved in an organic solvent, and ultrasonically treated for 1 hour to fully disperse the graphene oxide. Weigh 2-aminobenzimidazole, slowly add it to the suspension of graphene oxide, and react under magnetic stirring heating for 36 to 48 hours. After cooling to room temperature, suction filtration and repeated washing. The obtained filter cake was placed in a vacuum drying oven, and vacuum-dried for 24 hours to obtain amidation modified graphene oxide. The amidation modified graphene oxide preparation process of the present invention has no excessive requirements on equipment, conventional process conditions, simple and convenient operation, is suitable for composite filling materials of anti-corrosion coatings, and can significantly improve the corrosion resistance of coatings performance.

Description

technical field [0001] The invention relates to amidated modified graphene oxide and its preparation method, as well as its application in epoxy coating, belonging to the field of graphene and coating preparation. Background technique [0002] Corrosion is a serious but unavoidable problem, causing huge economic losses. Therefore, people use various methods to reduce the corrosion rate, and applying a coating on the metal surface is a typical corrosion protection method. Due to its excellent stability, wear resistance and low price, epoxy resin is currently an organic coating widely used to reduce metal corrosion, but it also has disadvantages such as high brittleness, insufficient strength and toughness. So researchers try to add various filler materials to enhance the corrosion resistance of epoxy resin. [0003] Since the discovery of graphene in 2004, it has gradually become a research hotspot in various fields because of its excellent properties in mechanical, optical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/198C09D163/00C09D5/08
CPCC09D163/00C01B32/198C09D5/08
Inventor 牛林于倩徐文东赵容萱
Owner SHANDONG UNIV
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