Polyaniline graphene nano composite anticorrosion paint and preparation method thereof

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...

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