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Antirust primer and finishing paint for steel structure and preparation and application of primer and finishing paint

A steel structure and anti-rust paint technology, applied in anti-corrosion coatings, coatings, epoxy resin coatings, etc., can solve the problems of low adhesion, high cost, and high zinc powder consumption, so as to improve adhesion and avoid coating Porous and guaranteed anti-rust performance

Active Publication Date: 2018-10-12
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] To sum up, these methods reported in the existing literature, although they can improve the antirust system with too much zinc powder in the primer, insufficient anticorrosion performance, poor adhesion between coatings, etc., but there are still costs. Too high, unstable anti-corrosion performance, low adhesion, etc.

Method used

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  • Antirust primer and finishing paint for steel structure and preparation and application of primer and finishing paint
  • Antirust primer and finishing paint for steel structure and preparation and application of primer and finishing paint
  • Antirust primer and finishing paint for steel structure and preparation and application of primer and finishing paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0132] To prepare 100g of component A coating, get 12g of solvent (formed by methyl isobutyl ketone, xylene and n-butanol in a ratio of 1:2:1), add 2.39g of organobentonite, stir for 10 minutes, add 0.72g of acetone as polar Additives, after stirring for 10 minutes to obtain a dispersion. Add 1.20g of silane coupling agent KH550 and 1.79g of dispersant (BYK-163) to 0.24g of graphene powder, stir for 10 minutes and then add to the resulting dispersion, and add 17.94g of epoxy resin E44 (Sinopec Baling Petrochemical public, epoxy equivalent 210-240), stirred for 10 minutes and ultrasonically dispersed for 12 hours. After the dispersion is complete, add 1.20g of defoamer (BYK-066N), 0.24g of leveling agent (BYK-323), and 0.12g of talc, and stir for 10 minutes. 13.96g flaky zinc powder (800 mesh), 13.96g flaky zinc powder (1000 mesh), 13.96g flaky zinc powder (1200 mesh), 11.96g flaky aluminum powder (1200 mesh), 2.39g rare earth powder ( Lanthanum-cerium composite phosphate par...

Embodiment 2

[0141] Prepare 100g of component A coating, get 18g of solvent (formed by methyl isobutyl ketone, xylene and n-butanol in a ratio of 1:2:1), add 1.8g of organobentonite, stir for 10 minutes, add 0.54g of acetone as electrode Additives, after stirring for 10 minutes to obtain a dispersion. Add 0.9g of silane coupling agent KH550 and 1.35g of dispersant (BYK-163) to 0.18g of graphene powder, stir for 10 minutes and then add to the resulting dispersion, and add 13.5g of epoxy resin E44 (Sinopec Baling Petrochemical Co., Ltd. , epoxy equivalent 210-240) and 15.75g solvent, stirred for 10 minutes and ultrasonically dispersed for 12 hours. After the dispersion is complete, add 0.90g defoamer (BYK-066N), 0.18g leveling agent (BYK-323), 0.09g talcum powder, and stir for 10 minutes. 10.50g flaky zinc powder (800 mesh), 10.50g flaky zinc powder (1000 mesh), 10.50g flaky zinc powder (1200 mesh), 9.00g flaky aluminum powder (1200 mesh), 1.80g rare earth powder ( Lanthanum-cerium composi...

Embodiment 3

[0150] To prepare 100g of component A coating, get 16.2g of solvent (formed by methyl isobutyl ketone, xylene and n-butanol in a ratio of 1:2:1), add 1.62g of organobentonite, stir for 10 minutes, add 0.49g of acetone as Polar additive, a dispersion was obtained after stirring for 10 minutes. Add 0.81g of silane coupling agent KH550 and 1.21g of dispersant (BYK-163) to 0.16g of graphene powder, stir for 10 minutes and then add to the resulting dispersion, and add 12.14g of epoxy resin E44 (Sinopec Baling Petrochemical Public, epoxy equivalent 210-240) and 24.25g solvent, stirred for 10 minutes and ultrasonically dispersed for 12 hours. After the dispersion is complete, add 0.81g defoamer (BYK-066N), 0.16g leveling agent (BYK-323), 0.08g talcum powder, and stir for 10 minutes. 9.44g flaky zinc powder (800 mesh), 9.44g flaky zinc powder (1000 mesh), 9.44g flaky zinc powder (1200 mesh), 8.09g flaky aluminum powder (1200 mesh), 1.62g rare earth powder ( Lanthanum-cerium composit...

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Abstract

The invention relates to the technical field of antirust paint for steel structures and particularly discloses antirust primer and finishing paint for a steel structure. The primer comprises a component A and a component B, the component A contains epoxy resin, anticorrosive filler and graphene; the component B contains an epoxy curing agent; the anticorrosive filler comprises a mixture of a rareearth material, composite iron titanium powder, zinc powder and aluminum powder, wherein the particle size of the composite iron titanium powder is greater than or equal to that of the zinc powder, the particle size of the zinc powder is greater than or equal to that of the aluminum powder, and the particle size of the aluminum powder is greater than that of the rare earth material. The finishingpaint contains materials such as fluororesin. Through combined use of the primer and the finishing paint, not only are good anti-corrosion performance and good anti-aging performance achieved, but also a high adhesion force is achieved.

Description

Technical field: [0001] The invention relates to an antirust paint for the bottom and surface of a steel structure. It is mainly used in steel structure engineering and can be directly coated on the surface of steel. Background technique [0002] Corrosion of steel has brought huge economic losses and potential safety hazards to projects, and the use of anti-corrosion coatings to protect steel structures is one of the most commonly used methods in current projects. Epoxy zinc-rich primer is one of the most commonly used primers in my country's steel structure anti-corrosion coating system. Its anti-corrosion mechanism is to protect the steel of the cathode by sacrificing the zinc powder of the anode. In addition, the corrosion products of the zinc powder can also block the shielding The corrosion of steel by corrosive media. Fluorocarbon paint has super weather resistance, and when used in conjunction with epoxy zinc-rich primer, it has extremely strong weather resistance, ...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D127/12C09D101/14C09D5/10C09D7/61C09D7/62C09D7/20
CPCC08K2201/005C08K2201/006C09D5/103C09D5/106C09D7/20C09D7/61C09D7/62C09D101/14C09D127/12C09D163/00C08L77/00C08K13/06C08K3/346C08K3/04C08K3/34
Inventor 董荣珍刘教培范国强卫军张敏吴素芹贺婉
Owner CENT SOUTH UNIV
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