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Self-repairing anticorrosive paint and preparation method thereof

An anti-corrosion coating and self-repairing technology, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems that cannot meet the requirements of practical applications, and achieve the effect of protection from damage and corrosion

Inactive Publication Date: 2012-10-10
福建百花化学股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no technology of adding microcapsules to coatings, and it cannot meet the requirements of practical applications. It is necessary to develop self-healing coatings that meet actual needs through research and cooperation of various disciplines.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The gray self-healing anticorrosion coating of the present embodiment includes: 50wt% of hydroxyl-containing acrylic resin, 17wt% of pigment-titanium dioxide, 4wt% of corrosion-inhibiting pigment, 0.4wt% of black pigment, 0.4wt% of dispersant, and 0.5wt% of anti-settling agent , defoamer 0.2wt%, leveling agent 0.3wt%, ultraviolet absorber 2wt%, benzotriazole 3wt%, polyurethane microcapsule 6wt%, xylene 16.2wt%.

Embodiment 2

[0020] The fruit green self-repairing anticorrosion coating of the present embodiment comprises: hydroxy-containing acrylic resin 50wt%, titanium dioxide 14.5wt%, blue pigment 0.6wt%, organic medium yellow 2.8wt%, corrosion-inhibiting pigment 3wt%, benzotriazole 5wt%, polyurethane microcapsule 8wt%, dispersant 0.3wt%, defoamer 0.4wt%, leveling agent 0.4wt%, ultraviolet absorber 3wt%, xylene 12wt%.

Embodiment 3

[0022] The blue self-healing anticorrosion coating of the present embodiment comprises: 55% of hydroxyl-containing acrylic resin, 14% of titanium dioxide, 7% of corrosion-inhibiting pigment, 1% of titanium cyanine blue, 0.2% of dispersant, 0.5% of anti-settling agent, defoaming agent 0.3% agent, 0.3% leveling agent, 1% UV absorber, 2% benzotriazole, 3% polyurethane microcapsule, 16.7% butyl ester.

[0023] The preparation method of self-repairing anticorrosion coating of the present invention, comprises the steps:

[0024] Add part of the formulation amount of hydroxy-containing acrylic resin and dispersant to the seasoning kettle, add pigments, corrosion-inhibiting pigments and organic solvents under stirring, and after high-speed dispersion, grind to a fineness of less than 20um. Under low-speed stirring, add benzotriazole, polyurethane microcapsules, defoamer, leveling agent, and ultraviolet light absorber to disperse evenly; adjust viscosity with organic solvent, take samp...

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Abstract

The invention provides self-repairing anticorrosive paint which can realize self-repairing and protect a bottom material from being corroded and a preparation method thereof. The self-repairing anticorrosive paint disclosed by the invention comprises hydroxyl-contained acrylic resin, pigment, corrosion-inhibiting pigment, benzotriazole as a corrosion inhibitor, a polyurethane microcapsule, an organic solvent, a dispersant, a defoaming agent, a leveling agent and an ultraviolet absorber. In the self-repairing anticorrosive paint and the preparation method of the self-repairing anticorrosive paint, when a paint film is broken and damaged, the benzotriazole as the corrosion inhibitor can perform the action of corrosion-inhibiting protection, and meanwhile, the microcapsule is broken, polyurethane in the capsule flows out and reacts with water in air under the action of the corrosion-inhibiting pigment as an auxiliary agent to form a new paint film, so that the self-repairing function of the paint film is realized, and the bottom material is further protected from being destroyed and corroded.

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, in particular to a self-repairing anticorrosion coating and a preparation method thereof. Background technique [0002] In the 21st century, the application of self-healing coatings in heavy-duty anti-corrosion has just started, and the research and application are still in their infancy, involving many disciplines, which is a typical interdisciplinary problem. At present, there is no technology of adding microcapsules to coatings, and it cannot meet the requirements of practical applications. It is necessary to research and cooperate with various disciplines to develop self-healing coatings that meet actual needs. Contents of the invention [0003] The invention provides a self-repairing anticorrosion coating capable of realizing self-repairing and protecting substrates from corrosion and a preparation method thereof. [0004] The self-repairing anticorrosion paint that realizes o...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12C09D5/08
Inventor 吴远光
Owner 福建百花化学股份有限公司
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