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A method for improving the corrosion resistance of metal components

A metal component, corrosion-resistant technology, used in anti-corrosion coatings, devices for coating liquid on surfaces, coatings, etc. and other problems, to achieve the effect of improving electrochemical protection, increasing electrochemical protection, and increasing conductivity

Active Publication Date: 2022-06-28
AVIC BIAM NEW MATERIALS TECH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for steel exposed to corrosive environments, if the zinc content in the zinc-rich coating is low, the granular zinc powder cannot form a complete zinc powder layer, and the cured epoxy resin has poor conductivity, which greatly hinders the chemical protection of the zinc powder. It affects the cathodic protection effect of zinc-rich coatings on steel, and the specific performance is that rust will appear soon after the salt spray test, and the salt spray resistance performance is low

Method used

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  • A method for improving the corrosion resistance of metal components
  • A method for improving the corrosion resistance of metal components
  • A method for improving the corrosion resistance of metal components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A method for improving corrosion resistance of metal components, comprising the following steps:

[0053] S1, prepare the scaly type epoxy alkene-zinc coating, prepare the A component and the B component according to the mass percentage in the following table 1, then mix the A component and the B component with the mass percentage to be 100:15 ratio to make the scale type epoxy olefin-zinc coating;

[0054] The order of adding the raw materials in the process is as follows: for component A, first mix the epoxy resin with the first solvent, then add the nano-pigment filler dispersant and graphene oxide, and obtain the graphene resin dispersion slurry by fully dispersing, and then Add wetting assistant, defoamer (silicon-free foam-breaking polymer solution defoamer), silicone assistant, and finally add zinc powder and nano anti-rust pigment to obtain component A;

[0055] For component B, directly mix the curing agent with the second solvent;

[0056] S2, the obtained s...

Embodiment 2-28

[0058] A method for improving the corrosion resistance of metal components is carried out according to the method in Example 1, the difference is that the mass percentage of raw materials in the scaly epoxy-zinc coating is prepared according to the following table 1, and in Example 3 The defoamer is an organic silicon defoamer.

[0059] Table 1:

[0060]

[0061]

[0062] Continued from Table 1:

[0063]

[0064]

[0065] Continued from Table 1:

[0066]

[0067]

[0068] Continued from Table 1:

[0069]

Embodiment 29

[0071] A method for improving the corrosion resistance of metal components is carried out according to the method in Example 17, the difference is that the A component and the B component are mixed with a mass percentage of 100:5 to prepare a scaly epoxy-zinc primer .

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Abstract

The invention discloses a method for improving the corrosion resistance of metal components, which comprises the following steps: preparing component A and component B, mixing component A and component B at a mass percentage of 100:5-30 to obtain a scale-shaped Epoxy ethylene-zinc paint, the prepared flake type epoxy ethylene-zinc paint is sprayed on the metal member to be sprayed by HVLP spraying process, the spraying distance during HVLP spraying is 15-30cm, and the spraying air inlet pressure is 0.7-2.0 bar, the atomizing pressure of the hood is 0.2‑0.7 bar, and the compressed air flow rate is 15‑20 cfm. In the present invention, the prepared flake-type epoxy ethylene-zinc coating is applied to the surface of the metal member by HVLP spraying, the operation is simple, the content of metal zinc in the non-volatile matter of the metal member surface coating is reduced, and the salt spray resistance of the coating is improved, and the coating is improved. The corrosion resistance of metal components improves the performance and service life of metal components.

Description

technical field [0001] The invention relates to the technical field of corrosion resistance of metal materials, and more particularly, to a method for improving the corrosion resistance of metal components. Background technique [0002] Metal corrosion is a very serious problem faced by human beings. The annual loss of metal structures, equipment and materials caused by corrosion is about 20%-40% of the metal production in that year. Tons or more, the economic loss accounts for 1.5-3.5% of the gross national economic output. Various techniques have been used for a long time to slow down the rate at which corrosion occurs. For example, the anti-corrosion coating is applied on the metal surface to form a coating after curing, which can prevent metal corrosion through shielding, corrosion inhibition, cathodic protection and other functions. [0003] At present, epoxy zinc-rich coating is one of the most important metal anti-corrosion coatings. It achieves anti-corrosion prote...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/10C09D7/61B05D7/14B05D7/24
CPCC09D163/00C09D5/106C09D7/61C09D7/70C09D5/084B05D7/14B05D7/24C08K2201/011C08K2003/0893C08K2003/328C08K2003/327C08K13/04C08K7/00C08K7/18C08K3/08C08K3/042C08K3/32C08K3/38C08K3/36
Inventor 许少华杨振波冯淋畅刘月佳刘伟房志安王宏志韩斌
Owner AVIC BIAM NEW MATERIALS TECH ENG
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