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Graphene oxide chiral polypyrrole hybrid material, anti-corrosion wave-absorbing coating and preparation method

A graphene, chiral technology, applied in anti-corrosion coatings, coatings, epoxy coatings, etc., can solve problems such as reducing dispersion and impedance matching, achieve strong seawater corrosion resistance, excellent microwave absorption performance, improve The effect of protection

Active Publication Date: 2021-09-24
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the large specific surface area and high conductivity of carbon materials such as graphene will reduce their dispersion and impedance matching

Method used

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  • Graphene oxide chiral polypyrrole hybrid material, anti-corrosion wave-absorbing coating and preparation method
  • Graphene oxide chiral polypyrrole hybrid material, anti-corrosion wave-absorbing coating and preparation method
  • Graphene oxide chiral polypyrrole hybrid material, anti-corrosion wave-absorbing coating and preparation method

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preparation example Construction

[0039] A preparation method of graphene oxide / chiral polypyrrole hybrid material, comprising the following steps:

[0040] Step 1: Add N-myristoyl-L-glutamic acid and pyrrole monomer into the solvent, and disperse fully and uniformly to obtain mixed solution A; the mass ratio of N-myristoyl-L-glutamic acid and pyrrole monomer It is 1:3~5; The preparation method of N-myristoyl-L-glutamic acid is as follows:

[0041] S11: Add L-glutamic acid and sodium hydroxide to the solvent, stir and mix well; the concentration of sodium hydroxide in the solution formed in S11 is 5-6g / mL, and the concentration of sodium hydroxide in S12 is 0.001mol / mL mL; the molar ratio of L-glutamic acid in S11 to N-myristoyl chloride in S12 was 1:1.

[0042] S12: Add dropwise an aqueous solution of N-myristoyl chloride and sodium hydroxide to the solution obtained in step S11, and stir thoroughly;

[0043] S13: After fully reacting, the pH value was adjusted to 1 under ice bath conditions, and white crys...

Embodiment 1

[0054] Graphene oxide / chiral polypyrrole hybrid materials were prepared according to the following steps:

[0055] Step 1: Add 30 mg of N-myristoyl-L-glutamic acid and 2 mmol of distilled and purified pyrrole monomer (Py) into 15 mL of absolute ethanol at room temperature, and sonicate at 100 W for 30 min.

[0056] The preparation method of N-myristoyl-L-glutamic acid is as follows:

[0057] S11: At room temperature, add L-glutamic acid and sodium hydroxide to the acetone solution, and stir mechanically for 30 minutes to mix the system evenly; the concentration of L-glutamic acid in the mixed solution is 0.001mol / mL, The sodium concentration was 5-6 g / mL.

[0058] S12: Add an aqueous solution of N-myristoyl chloride and sodium hydroxide dropwise to the solution obtained in step S11, with mechanical stirring during the dropwise addition to make the system fully react. After the dropwise addition, the concentration of N-myristoyl chloride in the solution was 0.001 mol / mL, and th...

Embodiment 2

[0065] Graphene oxide / chiral polypyrrole hybrid materials were prepared according to the following steps:

[0066] Step 1: Add 30 mg of N-myristoyl-L-glutamic acid and 5 mmol of distilled and purified pyrrole monomer (Py) into 15 mL of absolute ethanol at room temperature, and sonicate at 100 W for 30 min.

[0067] The preparation method of N-myristoyl-L-glutamic acid is as follows:

[0068] S11: At room temperature, add L-glutamic acid and sodium hydroxide to the acetone solution, and stir mechanically for 30 minutes to mix the system evenly; the concentration of L-glutamic acid in the mixed solution is 0.001mol / mL, The sodium concentration was 5-6 g / mL.

[0069] S12: Add an aqueous solution of N-myristoyl chloride and sodium hydroxide dropwise to the solution obtained in step S11, with mechanical stirring during the dropwise addition to make the system fully react. After the dropwise addition, the concentration of N-myristoyl chloride in the solution was 0.001 mol / mL, and ...

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Abstract

The invention discloses a graphene oxide chiral polypyrrole hybrid material, an anti-corrosion wave-absorbing coating and a preparation method. The method comprises the following steps: 1, adding N-myristoyl-L-glutamic acid and a pyrrole monomer into a solvent, and fully and uniformly dispersing the mixture to obtain a mixed solution A, wherein the mass ratio of the N-myristoyl-L-glutamic acid to the pyrrole monomer is 1:(1-5); 2, dispersing graphene oxide in the solution to form a solution B; 3, fully mixing the mixed solution A and the solution B to form a mixed solution C, and slowly dropwise adding an initiator into the mixed solution C under a stirring condition, wherein the mass ratio of the graphene oxide to the pyrrole monomer in the mixed solution C is 1: (20-50); 4, after full reaction, carrying out suction filtration and cleaning, and drying and grinding to obtain the required graphene oxide / chiral polypyrrole hybrid material. The hybrid material obtained by the invention has excellent wave-absorbing performance, and also has good adaptive capacity to environment, namely corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to a graphene oxide chiral polypyrrole hybrid material, an anti-corrosion wave-absorbing coating and a preparation method. Background technique [0002] Combining conductive polymers with other materials is a comprehensive and effective method to improve the microwave absorption and corrosion protection of materials. Conductive polymers have the advantages of simple preparation process, low density, corrosion resistance, and stable chemical properties. Moreover, after the conductive polymer is compounded with magnetic loss substances, the material not only has good conductivity and magnetism, but also has a single attenuation of electromagnetic waves. The electrical loss becomes a combination of dielectric loss and magnetic loss. Carbon materials such as graphene and graphene oxide can be widely used in the field of electromagnetic wave absorption because of their low ...

Claims

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Application Information

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IPC IPC(8): C08L79/04C08K3/04C09D163/00C09D5/08C09D5/32
CPCC08K3/042C09D163/00C09D5/08C09D5/32C08L79/04
Inventor 孟凡彬郭子浩任和松李天陈谭琳
Owner SOUTHWEST JIAOTONG UNIV
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