High-adhesion zinc powder anticorrosive paint and preparation method thereof

A technology of adhesion zinc and anti-corrosion coatings, applied in the field of coatings, can solve problems such as difficulty in maintaining adhesion, non-dense coating of zinc-rich coatings, lack of binder resin, etc.

Pending Publication Date: 2022-06-03
SHENYANG RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, zinc-rich coatings need a large amount of zinc powder as a guarantee to achieve the above effects, which makes the pigment volume concentration (PVC) in the coating far exceed the critical pigment volume concentration (CPVC), so zinc-rich coatings are a kind of Porous and non-dense coating; on the other hand, due to the lack of binder resin, the adhesion between the substrate and the coating is reduced, especially the wet adhesion-that is, the adhesion of the coating after service is even worse. hard to keep

Method used

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  • High-adhesion zinc powder anticorrosive paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] According to the proportion, mix the epoxy resin and the solvent, and stir for 10 minutes; add 1 g of anti-settling agent and continue to stir for 20 minutes; weigh 7.6 g of mica powder, 5 g of talc powder, and 51 g of zinc powder into the above slurry, stir for 20 minutes, and filter to obtain A component.

[0044] Above-mentioned, resin emulsion is the epoxy resin of E20 system, solid content is 75%, all the other are xylene and n-butanol solvent, epoxy equivalent is 500 (Jiangsu Sanmu); Anti-settling agent is organobentonite, (new ship); Mica The powder is sericite (Gerui, Anhui) with a mesh number of 300 to 1500; Talc is an ultra-fine talcum powder with a mesh of 800 to 1500, with a Mohs hardness coefficient of 1 to 1.5. The specific gravity is 2.7 to 2.8 (Liaoning Shengxu); the zinc powder is spherical zinc powder (Jiangsu Shenlong) with a mesh number of 600 mesh to 1200 mesh.

[0045]Then, 51.6 g of the first curing agent and 32.3 g of the second curing agent wer...

Embodiment 2

[0049] According to the proportion, weigh the epoxy resin and solvent, and stir for 10 minutes; take 1.5 g of anti-settling agent and continue to stir for 20 minutes; weigh 2.2 g of mica powder, 1.3 g of talc powder, and 60 g of zinc powder, and add them to the above slurry and stir for 20 minutes. Filter to obtain A component.

[0050] Above-mentioned, resin emulsion is the epoxy resin of E20 system, solid content is 75%, all the other are xylene and n-butanol solvent, epoxy equivalent is 500 (Jiangsu Sanmu); Anti-settling agent is organobentonite, (new ship); Mica The powder is sericite (Gerui, Anhui) with a mesh number of 300 to 1500; Talc is an ultra-fine talcum powder with a mesh of 800 to 1500, with a Mohs hardness coefficient of 1 to 1.5. The specific gravity is 2.7 to 2.8 (Liaoning Shengxu); the zinc powder is spherical zinc powder (Jiangsu Shenlong) with a mesh number of 600 mesh to 1200 mesh.

[0051] Then weigh 43 g of the first curing agent, 27 g of the second cur...

Embodiment 3

[0055] According to the proportion, weigh the epoxy resin and solvent, and stir for 10 minutes; take 1 g of anti-settling agent and continue to stir for 20 minutes; weigh 66.2 g of zinc powder, add it to the above slurry, stir for 20 minutes, and filter to obtain component A.

[0056] Above-mentioned, resin emulsion is the epoxy resin of E20 system, solid content is 75%, all the other are xylene and n-butanol solvent, epoxy equivalent is 500 (Jiangsu Sanmu); Anti-settling agent is organobentonite, (new ship); Zinc The powder is spherical zinc powder (Jiangsu Shenlong) with a mesh number of 600 mesh to 1200 mesh.

[0057] Then weigh 51.6 g of the first curing agent, 32.3 g of the second curing agent, and 16.1 g of anhydrous ethanol as a solvent, stir for 30 minutes, and filter to obtain component B.

[0058] The above-mentioned one type of curing agent is T31 (Tianjin Jinning), and the active hydrogen equivalent is 75 g / mol; the second type of curing agent is 651 (Tianjin Jinni...

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Abstract

The invention belongs to the technical field of coatings, and particularly relates to a high-adhesion zinc powder anticorrosive coating, a preparation method thereof and application of the high-adhesion zinc powder anticorrosive coating in the field of corrosion resistance. The zinc powder anticorrosive paint is prepared by mixing a component A and a component B according to a mass ratio of (24.2-36.3): 1, the component A comprises epoxy resin, a solvent A, mica powder, talcum powder, an anti-settling agent, a corrosion inhibitor and zinc powder, and the component B comprises a curing agent and a solvent B; the corrosion inhibitor is one or a mixture of more of a silane coupling agent, acetylacetone and an organic-inorganic hybrid modified silane coupling agent. The high-adhesive-force zinc powder anticorrosive paint provided by the invention has the characteristics of high adhesive force to a base material, small adhesive force loss in a service process, long corrosion-resistant time and the like.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a high-adhesion zinc powder anti-corrosion coating, a preparation method thereof, and an application in the field of corrosion resistance. Background technique [0002] Zinc-rich coating is one of the most important and commonly used anti-corrosion coatings in rigid structures such as ships, bridges, and large-scale equipment. . [0003] The main mechanism of zinc-rich coatings is electrochemical protection first, because the potential of metal zinc is more negative than that of iron, zinc atoms are more likely to lose electrons and become anodes, while iron is the cathode, and the surface of steel in the cathode area continuously gets electrons for protection. ; The shielding effect of zinc-rich coatings comes from the later stage of coating service, relying on the corrosion products formed after the consumption of zinc powder - insoluble zinc oxide, zinc hydroxide, basic zinc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10C09D5/08C09D7/61
CPCC09D163/00C09D5/106C09D5/08C09D7/61C08K2201/014C08K2003/0893C08K3/34C08K3/08C08K5/07C08K5/5425C08K13/02
Inventor 韩悦史美慧康鑫王佳妮吴井龙刘宏宇关帅
Owner SHENYANG RES INST OF CHEM IND
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