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A kind of polyaniline graphene nanocomposite anticorrosion coating and preparation method thereof

A nano-composite, anti-corrosion coating technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as easy agglomeration properties, and achieve the effects of inhibiting electrochemical corrosion, improving compatibility, and improving mechanical properties

Active Publication Date: 2017-08-25
天津昊图环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, graphene is added to the coating without further treatment, and it is prone to agglomeration and re-stacking during the dispersion process, which affects its own performance.

Method used

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  • A kind of polyaniline graphene nanocomposite anticorrosion coating and preparation method thereof
  • A kind of polyaniline graphene nanocomposite anticorrosion coating and preparation method thereof
  • A kind of polyaniline graphene nanocomposite anticorrosion coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In terms of parts by mass, the raw material formula of component A consists of:

[0049]

[0050] In terms of parts by mass, the raw material formula of component B consists of:

[0051] Polyamide curing agent 48;

[0052] Intrinsic state polyaniline graphene composite material 10;

[0053] Xylene 42.

[0054] Prepare polyaniline graphene nanocomposite anticorrosion coating as follows:

[0055] (1) Preparation of intrinsic polyaniline graphene composites

[0056] 1) Add graphene to the hydrochloric acid solution, ultrasonically crush the cells for 10 minutes, add aniline after the dispersion is uniform, and stir and mix evenly at a speed of 200 rpm at 0‐5 °C. Wherein, the concentration of aniline is 0.05 mol / L, the concentration of graphene is 0.5 mg / mL, and the concentration of hydrochloric acid is 0.1 mol / L. Dissolve the oxidant into a certain concentration of hydrochloric acid solution, add it into the hydrochloric acid solution containing aniline and graphen...

Embodiment 2

[0063] In terms of parts by mass, the raw material formula of component A consists of:

[0064]

[0065] In terms of parts by mass, the raw material formula of component B consists of:

[0066]

[0067] Prepare polyaniline graphene nanocomposite anticorrosion coating as follows:

[0068] (1) Preparation of intrinsic polyaniline graphene composites

[0069]1) Add graphene into the hydrochloric acid solution, ultrasonically crush the cells for 30 minutes, add aniline after the dispersion is uniform, and stir and mix evenly at 0-5°C at a speed of 200rpm. Wherein, the concentration of aniline is 0.09 mol / L, the concentration of graphene is 0.8 mg / mL, and the concentration of hydrochloric acid is 0.3 mol / L. Dissolve the oxidizing agent in a certain concentration of hydrochloric acid solution, add it into the hydrochloric acid solution containing aniline and graphene, stir and mix evenly at a speed of 200rpm at 0-5°C, react for 18 hours, centrifuge and wash three times to ob...

Embodiment 3

[0076] In terms of parts by mass, the raw material formula of component A consists of:

[0077]

[0078] In terms of parts by mass, the raw material formula of component B consists of:

[0079]

[0080] Prepare polyaniline graphene nanocomposite anticorrosion coating as follows:

[0081] (1) Preparation of intrinsic polyaniline graphene composites

[0082] 1) Add the graphene into the hydrochloric acid solution, ultrasonically crush the cells for 45 minutes, add aniline after the dispersion is uniform, and stir and mix evenly at a speed of 200 rpm at 0‐5 °C. Wherein, the concentration of aniline is 0.19 mol / L, the concentration of graphene is 2 mg / mL, and the concentration of hydrochloric acid is 0.5 mol / L. Dissolve the oxidizing agent in a certain concentration of hydrochloric acid solution, add it into the hydrochloric acid solution containing aniline and graphene, stir and mix evenly at 0-5°C at a speed of 200rpm, react for 12 hours, centrifuge and wash three times ...

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Abstract

The invention discloses polyaniline graphene nano composite anticorrosion paint and a preparation method thereof. The polyaniline graphene nano composite anticorrosion paint is prepared by uniformly stirring a component A and a component B in a weight ratio of 1: 0.25 to 1: 0.5; the component A comprises 40 to 60 parts by weight of epoxy resin, 1 to 5 parts by weight of flatting agent, 1 to 5 parts by weight of defoaming agent, 10 to 20 parts by weight of filler, 1 to 5 parts by weight of wetting dispersing agent and 20 to 40 parts by weight of first solvent; the component B comprises 30 to 50 parts of curing agent, 10 to 30 parts of eigenstate polyaniline graphene composite material and 30 to 50 parts of second solvent. The eigenstate polyaniline and metal form a passivation film, the dispersion of a single layer or fewer layers of graphene is guaranteed on the aspect of the molecular level, the formation of a graphene conducting network is prevented, and the electrochemical corrosion is inhibited; meanwhile, a physical shielding and chemical anticorrosion effect is provided, so that the paint is excellent in anticorrosion performance, resistant to high temperature and high in hardness; and moreover, the preparation method is simple, controllable, low in production cost and suitable for industrialized production.

Description

technical field [0001] The invention relates to an anti-corrosion coating, in particular to a polyaniline-graphene nano-composite anti-corrosion coating and a preparation method thereof, belonging to the technical field of material synthesis and coating preparation technology. Background technique [0002] Metal corrosion refers to the chemical and electrochemical reactions on the surface of metal materials and the environment to degrade the performance of materials. Metal corrosion will cause huge losses. One of the simplest and most effective anti-corrosion methods is to coat a layer of anti-corrosion coating on the metal surface, so that there is a barrier between the metal surface and the environment. At present, the demand in the global anti-corrosion coating market is growing rapidly, especially in the fields of oil and gas industry, power industry, industrial field and infrastructure construction. [0003] Since DeBerry reported that the electrochemically polymerized...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/06C09D7/12C09D7/47
Inventor 张心亚蔡文曦盛鑫鑫钟理
Owner 天津昊图环保科技有限公司
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