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A self-healing composite coating with anti-corrosion enhancement

A composite coating and self-healing technology, used in anti-corrosion coatings, coatings, radiation-absorbing coatings, etc., can solve problems such as affecting the electromagnetic properties of absorbents, reducing the wave-absorbing performance of coatings, and overall peeling, to improve corrosion protection. ability, overcome rust, improve the effect of corrosion resistance

Inactive Publication Date: 2020-10-23
山东格物新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used absorbents are difficult to achieve an absolutely precise chemical ratio, and contain metal elements to varying degrees. Even if there is a polymer shielding protection in the coating, under the influence of multiple factors such as high temperature, high humidity, and high salt in the marine environment (accelerated polymer aging), it will also accelerate the penetration of the corrosive medium (water vapor containing chloride ions) into the polymer layer to cause iron corrosion and generate non-magnetic substances (such as Fe2O3), which will affect the electromagnetic properties of the absorbent; at the same time, due to the internal The corrosion of the absorber will accelerate the breakage and cracking of the microwave-absorbing coating. When it spreads further to the bottom layer, it will cause the coating to debond and even peel off as a whole. The superposition of all these factors will make the microwave-absorbing performance of the coating irreversible. decrease until failure

Method used

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  • A self-healing composite coating with anti-corrosion enhancement
  • A self-healing composite coating with anti-corrosion enhancement
  • A self-healing composite coating with anti-corrosion enhancement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The coating adopts a bottom-surface double-layer structure design, and the formulation design of each layer of coating adopts a two-component system, which is weighed by weight percentage.

[0022] Primer coating ratio

[0023]

[0024] Component A resin is bisphenol A epoxy resin, the epoxy equivalent is between 210-450, it can be Huntsman 6101, Dow 671 or their mixture.

[0025] The anti-corrosion pigments and fillers in component A are compound zinc phosphate with a particle size of less than 3 microns, which can be BASF’s ZNP, Kaibai’s ZP-10, etc.

[0026] The self-healing agent in component A is an inorganic capsule structure material filled with a corrosion-inhibiting liquid. The specific preparation method: add 0.015g of hexadecyltrichlorosilane dropwise to 200ml of absolute ethanol, ultrasonically / stir, and slowly add 5ml of normal Ethyl silicate, after ultrasonic / stirring (peripheral linear speed of stirring blade 1-2 m / s), add 6ml of ammonia water and 50ml...

Embodiment 2

[0038] The preparation method and process are the same as in Example 1, only the composition ratio of the paint is changed.

[0039] Composite microwave absorbing coating primer formulation --- two-component epoxy polyamide system

[0040]

[0041]

[0042] Components A and B are mixed and used in percentage by weight according to epoxy equivalent: amine hydrogen equivalent = 1:1.

[0043] Composite microwave absorbing coating surface coating formula --- two-component acrylic polyurethane system

[0044]

[0045] Components A and B are mixed and used in percentage by weight according to epoxy equivalent: amine hydrogen equivalent = 1:1.

Embodiment 3

[0047] The preparation method and process are the same as in Example 1, only the composition ratio of the paint is changed.

[0048]Composite microwave absorbing coating primer formulation --- two-component epoxy polyamide system

[0049]

[0050]

[0051] Components A and B are mixed and used in percentage by weight according to epoxy equivalent: amine hydrogen equivalent = 1:1.

[0052] Composite microwave absorbing coating surface coating formula --- two-component acrylic polyurethane system

[0053]

[0054] Components A and B are mixed and used in percentage by weight according to epoxy equivalent: amine hydrogen equivalent = 1:1.

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Abstract

The invention discloses a corrosion reinforcement self-repair composite coating. The composite coating is composed of laminated priming coat layers and finishing coat layers, the paint of the primingcoat layer employs a system of a component A and a component B, the component A comprises epoxy resin, a self-repairing agent, a corrosion-resistant pigment, a filling material, an auxiliary agent, and a solvent, the component B is a curing agent, the paint of the finishing coat layer employs a system of a component A and a component B, the component A comprises high-weatherability resin, a modified microwave absorbent, the filling material, the auxiliary agent, and a solvent, and the component B is the curing agent. The corrosion reinforcement self-repair composite coating can effectively solve the technical problems that novel protection capability can be timely firmed while damage is generated, and the protection performance of the routine coating is loss.

Description

technical field [0001] The invention relates to the technical field of marine anti-corrosion, in particular to an anti-corrosion enhanced self-repairing composite coating. Background technique [0002] Microwave absorbing coating is a compound composed of polymer and microwave absorber (hereinafter referred to as absorber). Its microwave absorbing performance is closely related to the electromagnetic properties of the absorber, the coating structure and the contact state with the coated substrate. The currently used absorbents are difficult to achieve an absolutely precise chemical ratio, and contain metal elements to varying degrees. Even if there is a polymer shielding protection in the coating, under the influence of multiple factors such as high temperature, high humidity, and high salt in the marine environment (accelerated polymer aging), it will also accelerate the penetration of the corrosive medium (water vapor containing chloride ions) into the polymer layer to cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/32C09D5/08C09D175/04
CPCC08K2201/014C09D5/08C09D5/32C09D163/00C09D175/04C08K3/32C08K9/10C08K9/12C08K7/26C08K5/3475C08K3/18
Inventor 吕德超宋妍
Owner 山东格物新材料科技有限公司
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