Aluminum oxide-containing polyaniline zinc powder flake epoxy heavy anti-corrosion coating and preparation method thereof

A polyaniline zinc-containing aluminum oxide technology, applied in the field of coatings, can solve the problems of poor anti-corrosion performance and environmental protection of pigments, and achieve the effects of improving aging resistance, aging resistance and penetration resistance, and improving coating adhesion

Active Publication Date: 2014-06-04
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent (ZL200810012653.6) introduces a polyaniline modified anti-corrosion coating, which reduces the toxicity of the coating by treating the pigment with polyaniline. The patent (ZL200810012657.4) introduces a polyaniline modified aluminum powder anti-corrosion coating and Its preparation method aims to solve the problems of poor anticorrosion performance of existing aluminum powder coatings and environmental protection of pigments
The anti-corrosion coating in the marine environment not only needs to have good corrosion resistance and permeability resistance, but also has good mechanical properties, adhesion and seawater erosion and abrasion resistance. At present, this problem has not been effectively solved. Therefore, research and development A heavy-duty anti-corrosion coating that can better protect the substrate is an urgent need for marine anti-corrosion

Method used

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  • Aluminum oxide-containing polyaniline zinc powder flake epoxy heavy anti-corrosion coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A preparation method of aluminum oxide-containing polyaniline zinc powder flake epoxy heavy-duty anticorrosion coating, comprising the steps of:

[0063] (1) Preparation of polyaniline zinc powder flakes: Mix 0.5 mole of aniline with 1 mole of perchloric acid and mix evenly, then set the volume to 2 liters; add 0.5 mole of ammonium persulfate into the aniline-doped acid solution evenly within 20 minutes, Stir at 10° C. for 0.5 hour to obtain the product polyaniline. In terms of parts by mass, mix 1 part of the obtained polyaniline with 5 parts of zinc powder flakes with a thickness of 0.01 μm and a diameter of 5 μm, continue stirring for 2 hours, centrifuge to collect the precipitate, wash with distilled water, and dry at 100 ° C for 1 hour. Grind with a mortar and sieve to obtain dark green polyaniline zinc powder scales.

[0064] (2) Preparation of coating component A:

[0065] (a) Component A mixed solvent: 1 part of xylene is mixed with 1 part of n-butanol to ...

Embodiment 2

[0074] A preparation method of aluminum oxide-containing polyaniline zinc powder flake epoxy heavy-duty anticorrosion coating, comprising the steps of:

[0075] (1) Preparation of polyaniline zinc powder flakes: Mix 0.1 mole of aniline and 0.2 mole of phosphoric acid and stir evenly, then set the volume to 1 liter; add 0.1 mole of benzoyl peroxide evenly into the aniline-doped acid solution within 10 minutes, Stir at -5°C for 0.5 hour to obtain the product polyaniline. In parts by mass, mix 1 part of the obtained polyaniline with 0.5 parts of zinc powder flakes with a thickness of 0.01 μm and a diameter of 5 μm, continue to stir for 1 hour, centrifuge to collect the precipitate, wash with distilled water, and dry at 80°C for 5 hours. Grind with a mortar and sieve to obtain dark green polyaniline zinc powder scales.

[0076] (2) Preparation of coating component A:

[0077](a) Component A mixed solvent: 1 part of styrene is mixed with 3 parts of tert-butanol to obtain a mi...

Embodiment 3

[0086] A preparation method of aluminum oxide-containing polyaniline zinc powder flake epoxy heavy-duty anticorrosion coating, comprising the steps of:

[0087] (1) Preparation of polyaniline zinc powder flakes: Mix 0.6 mol of aniline, 0.5 mol of phosphoric acid, and 0.6 mol of phytic acid and stir evenly, then set the volume to 1 liter; then add 0.6 mol of ammonium persulfate into aniline within 20 minutes The heteroacid solution was stirred at 5°C for 1 hour to obtain the product polyaniline. In terms of parts by mass, mix 1 part of the obtained polyaniline with 2 parts of zinc powder flakes with a thickness of 0.02 μm and a diameter of 9 μm, continue stirring for 2 hours, centrifuge to collect the precipitate, wash with distilled water, and dry at 80°C for 4 hours , ground with a mortar and sieved to obtain dark green polyaniline zinc powder scales;

[0088] (2) Preparation of coating component A:

[0089] (a) Mixed solvent of component A: Mix 2 parts of toluene with ...

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Abstract

The invention discloses aluminum oxide-containing polyaniline zinc powder flake epoxy heavy anti-corrosion coating and a preparation method thereof. The coating comprises a component A and a component B, wherein the component A comprises the following components in parts by mass: 35-85 parts of epoxy resin, 0.5-25 parts of polyaniline zinc powder flake, 0.1-10 parts of aluminum oxide, 0.1-5 parts of pigment, 1-15 parts of packing, 0.01-2 parts of anti-sag agent, 0.01-0.5 part of dispersant, 0.01-2 parts of flatting agent, 0.01-0.5 part of deforming agent and 5-40 parts of mixed solvent; and the component B comprises the following components in parts by mass: 40-90 parts of amine curing agent and 10-60 parts of solvent; and the coating is prepared by mixing and stirring the component A and the component B for 1-5 minutes according to a mass ratio being 1: (0.1-1):1. The corrosion resistance, seawater erosion and abrasion resistance, ageing resistance and anti-penetrating property of the coating system are obviously improved; and the coating can be applied to heavy anti-corrosion engineering in fields of petrochemical equipment, pipelines, offshore oil platforms, berthing facilities, ships and the like.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to aluminum oxide-containing polyaniline-modified zinc powder flake epoxy heavy-duty anti-corrosion coatings and a preparation method thereof. Background technique [0002] The marine environment is an extremely harsh and corrosive environment. Marine engineering facilities and equipment will be subject to strong atmospheric corrosion, electrochemical corrosion, airflow and water flow erosion and biological corrosion in the marine environment. The service life of various steel structures is much lower than that of the general inland outdoor environment. As the country speeds up infrastructure construction projects, a large number of major projects such as offshore survey platforms, oil production platforms, offshore oil and gas gathering pipelines, ships, port terminals, and bridges have started construction. However, in such a complex and harsh corrosive environment like the ocean...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10C09D7/12
Inventor 李保松张薇薇吴玉萍
Owner HOHAI UNIV
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