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Self-repairing anticorrosive coating and preparation method thereof

An anti-corrosion coating and self-repairing technology, which is applied in the field of anti-corrosion coatings, can solve problems such as insufficient anti-corrosion performance and mechanical properties, and achieve the effects of improved anti-corrosion performance, good flexibility, and reduced penetration

Active Publication Date: 2020-05-29
XIAMEN SUNRUI SHIP COATING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem of insufficient anti-corrosion and mechanical properties in the existing self-healing coating technology mentioned in the above-mentioned background technology, the present invention provides a self-healing anti-corrosion coating, including component A and component B, wherein component A includes The raw material of following mass parts:

Method used

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  • Self-repairing anticorrosive coating and preparation method thereof
  • Self-repairing anticorrosive coating and preparation method thereof
  • Self-repairing anticorrosive coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0041] In the first component of embodiment 1: the epoxy resin is 6101 epoxy resin (the trade mark is E44), and the solvent is xylene and n-butanol; the dispersant is EFKA-4310; the thixotropic agent is 140# organic bentonite and Ultra polyamide wax The filler is talcum powder, precipitated barium sulfate, barite powder, mica powder, sericite powder, aluminum tripolyphosphate, feldspar powder. ; In the second component: the curing agent is BS805 curing agent; the solvent is xylene and n-butanol, wherein the weight ratio of the first component and the second component is 6:1;

Embodiment 2

[0042] In the first component of embodiment 2: the epoxy resin is 618 epoxy resin (the trade mark is E51), and the solvent is xylene and cyclohexanone; the dispersant is BYK-220s; the thixotropic agent is 140# bentonite; the filler is talcum powder , precipitated barium sulfate, barite powder, mica powder, sericite powder, mica iron oxide, feldspar powder; in component B: curing agent is MD2015 cashew nut shell oil phenalkamine curing agent; solvent is xylene, component A and The weight ratio of component B is 3:1;

Embodiment 3

[0043] In the first component of embodiment 3: the epoxy resin is a blend of 6101 epoxy resin and 618 epoxy resin, the solvent is xylene and n-butanol; the dispersant is BYK-110; the thixotropic agent is 140# organic bentonite and Ultra Polyamide wax; fillers are talcum powder, precipitated barium sulfate, barite powder, ferrophosphorus powder, mica iron oxide, feldspar powder; in component B: curing agent is BS8328 polyamide curing agent and KDX2015 cashew nut shell oil phenalkamine curing The solvent is xylene; the weight ratio of component A and component B is 4:1.

[0044] In each embodiment, the corrosion inhibitor microcapsules are prepared by the following preparation method:

[0045]Step 1: Take 0.2g sodium lauryl sulfate, 15g barium petroleum sulfonate, and 0.8g n-hexadecane, disperse them in 80mL water, and ultrasonicate for 5-10min to form an oil-in-water emulsion;

[0046] Step 2: Add 5g acrylic acid solution to the prepared oil-in-water emulsion in step 1, 0.02g ...

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Abstract

The invention relates to the technical field of anticorrosive coatings, and concretely relates to a self-repairing anticorrosive coating and a preparation method thereof. The self-repairing anticorrosive coating comprises a component A and a component B. The component A comprises, by mass, 20 to 50 parts of epoxy resin, 10 to 16 parts of a solvent, 0.3 to 1.5 parts of a dispersant, 0.2 to 1.5 parts of a thixotropic agent, 38 to 56 parts of a filling material and 1.5 to 5.0 parts of corrosion inhibitor microcapsules; and the component B comprises, by mass, 70-90 parts of a curing agent and 10-30 parts of solvent. The corrosion inhibitor is loaded in an organic-inorganic hybrid carrier, and the obtained material is added into an anticorrosive coating, so the problems that compatibility between corrosion inhibitor microcapsules and a coating substrate is poor, after a corrosion inhibitor is released, a corrosion inhibitor carrier leaves channels for corrosive substances, more defects arecaused, and the mechanical strength of corrosion inhibitor particles is poor are solved, and the prepared coating is high in corrosion resistance, simple in preparation method, capable of being brushed or sprayed and suitable for large-area construction.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to a self-repairing anti-corrosion coating and a preparation method thereof. Background technique [0002] Polymer anticorrosion coating is widely used in metal surface anticorrosion due to its simplicity and economy. However, during the protection process of the coating, various defects will occur, and the infiltration of the corrosive medium at the defect will accelerate the corrosion of the metal substrate, thereby affecting the life of the coating and causing economic losses. Therefore, it is necessary to develop a self-healing anti-corrosion coating . [0003] Self-healing anti-corrosion coatings mainly include two types: one is to encapsulate the polymer monomer in a certain container. When the coating is damaged, the polymer monomer reacts under the catalyst or curing agent to form a polymer. Fills the damage, thereby preventing the penetration of corrosive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D5/08C09D7/61C09D7/62C09D7/65B01J13/02
CPCB01J13/02C08K2003/3045C08K2201/014C08L2205/025C08L2205/03C08L2205/035C09D5/08C09D163/00C09D7/61C09D7/62C09D7/65C08L77/00C08K13/06C08K3/34C08K3/30C08K3/32C08K3/00
Inventor 叶维维吴培发苏雅丽
Owner XIAMEN SUNRUI SHIP COATING
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