A kind of marine heavy-duty anti-corrosion coating and preparation method thereof

Abstract

The invention discloses a marine heavy-duty anti-corrosion coating and a preparation method thereof. The coating comprises the following components in parts by weight: 5-15 parts of mica powder, 10-15 parts of B-N ligand polyaniline / montmorillonite composite conductive material, 8-15 parts of talcum powder, 10-15 parts of quartz powder, 30-40 parts of matrix resin, 0-3 parts of pigment, 0.5-1.0 part of defoamer, 0.5-1.0 part of dispersant, 0.5-1.0 part of coalescing agents and 30-40 parts of solvent, wherein the B-N ligand polyaniline / montmorillonite composite conductive material is synthesized by montmorillonite activated and modified by a surfactant, an organic boronic acid, an aniline monomer and double phenolic hydroxyl derivatives; the organic boronic acid is one of a 2-methyl phenyl boronic acid, a 3-methyl phenyl boronic acid, a 4-methyl phenyl boronic acid, a 3,5-dimethylphenylboronic acid, a phenylboronic acid and 4-methoxy benzene boron; the double phenolic hydroxyl derivatives are one of 3,4-gentisic acid methyl ester, 3,4-dihydroxy benzaldehyde and 3,4-dihydroxy benzoic acid ethyl ester. The coating is excellent in corrosion resistance.

Description

technical field

[0001] The invention belongs to the technical field of heavy-duty anti-corrosion coatings, and relates to a marine heavy-duty anti-corrosion coating and a preparation method thereof. Background technique

[0002] With the rapid development of my country's marine economy, the market size of marine coating products is constantly expanding, and the average annual growth rate of demand for marine coatings exceeds 20%. In addition to ships and containers, marine development infrastructure such as cross-sea bridges require a long anti-corrosion period. Marine anti-corrosion is one of the key technologies of marine engineering. Stress corrosion cracking (SCC), hydrogen embrittlement (HE), corrosion fatigue (CF), and intergranular corrosion (IC) caused by metal corrosion in the ocean will cause marine engineering steel The structure breaks suddenly, leading to an ecological disaster in the marine environment and causing huge losses. In addition, the premature failu...

Examples

Embodiment 1

[0051] (1) Preparation of B-N coordination polyaniline / montmorillonite composite conductive material

[0052] a. Add 50 parts of CTAB organically modified montmorillonite to 500 parts of 1mol / L organic boric acid solution to disperse, and stir evenly with a mixer at a speed of 800r / min at room temperature to form a suspension system, and continue stirring for 5h. Add 10 parts of aniline monomer to the suspension to carry out aniline intercalation reaction in situ, and continue to stir for 6 hours to fully intercalate. The coordination process of this step is as follows: figure 1 shown;

[0053] b. At room temperature, add an oxidant with the same molar amount as the aniline monomer and 10 parts of bishydroxyphenol derivatives into the aniline emulsion, and react for 8 hours under nitrogen protection;

[0054] c. After the reaction is completed, ultrasonically disperse in water first, and then perform centrifugation. The obtained precipitate is repeatedly washed with deionized...

Embodiment 2

[0058] (1) Preparation of B-N coordination polyaniline / montmorillonite composite conductive material

[0059] a. Add 50 parts of CTAB organically modified montmorillonite to 500 parts of 1mol / L organic boric acid solution to disperse, and stir evenly with a mixer at a speed of 700r / min at room temperature to form a suspension system, and continue stirring for 5h. Add 12 parts of aniline monomer to the suspension for aniline in-situ intercalation reaction, and continue stirring for 6 hours to fully intercalate;

[0060] b. At room temperature, add an oxidant with the same molar amount as the aniline monomer and 15 parts of bishydroxyphenol derivatives into the aniline emulsion, and react for 8 hours under nitrogen protection;

[0061] c. After the reaction is completed, ultrasonically disperse in water first, and then perform centrifugation. The obtained precipitate is repeatedly washed with deionized water and acetone until the filtrate is neutral, and the obtained precipitate...

Embodiment 3

[0065] (1) Preparation of B-N coordination polyaniline / montmorillonite composite conductive material

[0066] a. Add 50 parts of CTAB organically modified montmorillonite to 500 parts of 1mol / L organic boric acid solution to disperse, and stir evenly with a mixer at a speed of 1000r / min at room temperature to form a suspension system, and continue stirring for 5h. Add 15 parts of aniline monomer to the suspension for aniline in-situ intercalation reaction, and continue to stir for 6 hours to fully intercalate;

[0067] b. At room temperature, add an oxidant with the same molar amount as the aniline monomer and 5 parts of bishydroxyphenol derivatives into the aniline emulsion, and react for 8 hours under nitrogen protection;

[0068] c. After the reaction is completed, ultrasonically disperse in water first, and then perform centrifugation. The obtained precipitate is repeatedly washed with deionized water and acetone until the filtrate is neutral, and the obtained precipitate ...

technical field

[0001] The invention belongs to the technical field of heavy-duty anti-corrosion coatings, and relates to a marine heavy-duty anti-corrosion coating and a preparation method thereof. Background technique

[0002] With the rapid development of my country's marine economy, the market size of marine coating products is constantly expanding, and the average annual growth rate of demand for marine coatings exceeds 20%. In addition to ships and containers, marine development infrastructure such as cross-sea bridges require a long anti-corrosion period. Marine anti-corrosion is one of the key technologies of marine engineering. Stress corrosion cracking (SCC), hydrogen embrittlement (HE), corrosion fatigue (CF), and intergranular corrosion (IC) caused by metal corrosion in the ocean will cause marine engineering steel The structure breaks suddenly, leading to an ecological disaster in the marine environment and causing huge losses. In addition, the premature failu...

Examples

Embodiment 1

[0051] (1) Preparation of B-N coordination polyaniline / montmorillonite composite conductive material

[0052] a. Add 50 parts of CTAB organically modified montmorillonite to 500 parts of 1mol / L organic boric acid solution to disperse, and stir evenly with a mixer at a speed of 800r / min at room temperature to form a suspension system, and continue stirring for 5h. Add 10 parts of aniline monomer to the suspension to carry out aniline intercalation reaction in situ, and continue to stir for 6 hours to fully intercalate. The coordination process of this step is as follows: figure 1 shown;

[0053] b. At room temperature, add an oxidant with the same molar amount as the aniline monomer and 10 parts of bishydroxyphenol derivatives into the aniline emulsion, and react for 8 hours under nitrogen protection;

[0054] c. After the reaction is completed, ultrasonically disperse in water first, and then perform centrifugation. The obtained precipitate is repeatedly washed with deionized...

Embodiment 2

[0058] (1) Preparation of B-N coordination polyaniline / montmorillonite composite conductive material

[0059] a. Add 50 parts of CTAB organically modified montmorillonite to 500 parts of 1mol / L organic boric acid solution to disperse, and stir evenly with a mixer at a speed of 700r / min at room temperature to form a suspension system, and continue stirring for 5h. Add 12 parts of aniline monomer to the suspension for aniline in-situ intercalation reaction, and continue stirring for 6 hours to fully intercalate;

[0060] b. At room temperature, add an oxidant with the same molar amount as the aniline monomer and 15 parts of bishydroxyphenol derivatives into the aniline emulsion, and react for 8 hours under nitrogen protection;

[0061] c. After the reaction is completed, ultrasonically disperse in water first, and then perform centrifugation. The obtained precipitate is repeatedly washed with deionized water and acetone until the filtrate is neutral, and the obtained precipitate...

Embodiment 3

[0065] (1) Preparation of B-N coordination polyaniline / montmorillonite composite conductive material

[0066] a. Add 50 parts of CTAB organically modified montmorillonite to 500 parts of 1mol / L organic boric acid solution to disperse, and stir evenly with a mixer at a speed of 1000r / min at room temperature to form a suspension system, and continue stirring for 5h. Add 15 parts of aniline monomer to the suspension for aniline in-situ intercalation reaction, and continue to stir for 6 hours to fully intercalate;

[0067] b. At room temperature, add an oxidant with the same molar amount as the aniline monomer and 5 parts of bishydroxyphenol derivatives into the aniline emulsion, and react for 8 hours under nitrogen protection;

[0068] c. After the reaction is completed, ultrasonically disperse in water first, and then perform centrifugation. The obtained precipitate is repeatedly washed with deionized water and acetone until the filtrate is neutral, and the obtained precipitate ...

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