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Anticorrosive coating and preparation method thereof

A technology of anti-corrosion coatings and pigments, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as large differences in corrosion resistance and corrosion of substrates, and achieve balanced corrosion resistance, reduce losses, and save The effect of oil resources

Inactive Publication Date: 2012-03-14
马敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chromium-free coatings developed in China for industrial production have a great difference in corrosion resistance from chromium-containing Dacromet coatings when the thickness is less than 20 microns, and the neutral salt spray corrosion resistance can only reach 300 hours at most.
The main reason is that the film layer is too thin, and water molecules can easily penetrate the film layer to rust the substrate

Method used

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  • Anticorrosive coating and preparation method thereof
  • Anticorrosive coating and preparation method thereof
  • Anticorrosive coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (embodiment 1, anticorrosion coating)

[0044] The anti-corrosion coating of this embodiment can be used in indoor environment, and is made up of film-forming substance, curing agent, solvent, pigment, pigment treatment agent; Wherein film-forming substance is epoxy resin; Curing agent is latent curing agent; Solvent comprises acetic acid Butyl ester, ethyl acetate, glycol ether acetate and dibasic acid ester mixture; pigments include effect pigments and anti-rust pigments; pigment treatment agent is silicone resin. The specific raw materials and proportioning are shown in Table 1:

[0045] Table I

[0046]

[0047] Of course, other types of epoxy resin, dicyandiamide, and silicone resin can also be used, and domestic aluminum powder and zinc powder can also be used.

Embodiment 2

[0048] (embodiment 2, anticorrosion coating)

[0049] The raw materials and models used in this embodiment are all the same as in Example 1, the difference is that the ratio of raw materials is carried out according to Table 2:

[0050] Table II

[0051] raw material name

Embodiment 3

[0052] (embodiment 3, anticorrosion coating)

[0053] The raw materials and models used in this embodiment are all the same as in Example 1, the difference being that the ratio of raw materials is carried out according to Table 3:

[0054] Table three

[0055] raw material name

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Abstract

The invention discloses an anticorrosive coating and a preparation method thereof. The anticorrosive coating comprises a film forming substance, a curing agent, a solvent, pigments and a pigment treating agent, wherein, the film forming substance is epoxy resin, the curing agent is a latent curing agent, the solvent contains butyl acetate, acetic ester, ethylene glycol monoethyl ether acetate anda dibasic acid ester mixture, the pigments comprise effect pigments and antirust pigments, and the pigment treating agent is organic silicone resin; the weight percentage of the above-mentioned raw materials is as follows: epoxy resin 12 to 18, the latent curing agent 2 to 3, butyl acetate 10 to 15, acetic ester 5 to 10, ethylene glycol monoethyl ether acetate 10 to 15, the dibasic acid ester mixture 8 to 15, the effect pigments 5.25 to 7, the antirust pigment 15.75 to 21 and organic silicone resin 2 to 5. The anticorrosive coating provided in the invention does not contain heavy metals, being in accordance with ROHS requirements of European Union, and is a genuine environment-friendly and green anticorrosive coating.

Description

technical field [0001] The invention relates to an anti-corrosion coating for metal, in particular to a single-component, single-coat anti-corrosion coating which can replace Dacromet coating and a preparation method thereof. Background technique [0002] Dacromet paint was first born in the late 1950s. In the cold winter in North America and Northern Europe, the thick ice layer on the road seriously hinders the driving of motor vehicles. People sprinkle salt on the ground to reduce the temperature of the freezing point to alleviate the problem of smooth roads, but the subsequent sodium chloride Chloride ions corroded the steel substrate, severely damaged the vehicle, and severe problems emerged. American scientist Mike Martin developed a high-dispersion water-soluble coating that is based on metal zinc flakes and added aluminum flakes, chromic acid, and deionized water as solvents. Thin coating, Dacromet coating successfully resists the erosion of chloride ions, and the a...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D133/00C09D7/12C09D5/10
Inventor 马敏
Owner 马敏
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