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Efficient zinc-rich coating added with aluminum powder and rare earth element and preparation method thereof

A high-efficiency, zinc-rich technology, applied in anti-corrosion coatings, coatings, etc., can solve problems such as single solid content of zinc powder, and achieve excellent corrosion performance, easy implementation and promotion, and less pollution.

Inactive Publication Date: 2013-04-03
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the above-mentioned prior art that the solid content is a single zinc powder, the purpose of the present invention is to provide a high-efficiency zinc-rich coating with added aluminum powder and rare earth elements and its preparation method, which has excellent anti-corrosion performance, simple preparation method, and easy construction. convenient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 12.9g of acrylic resin and 4.3g of amino resin to the mixed resin with 45ml of butyl acetate solvent under low-speed stirring. After the resin is completely dissolved, add 5.0g of wetting and anti-settling mixing additives and stir evenly.

[0025] Add 455g of high-purity zinc powder with an average particle size of 1-2μm, 20g of aluminum powder, and 0.75g of high-purity rare earth lanthanum powder into the above-mentioned resin slurry, stir at a high speed of 1200-1500rpm for 30min at room temperature and pressure, then reduce the speed to 600rpm, and continue stirring 10min, until the fineness is less than or equal to 20μm, the finished new high-efficiency zinc-rich coating can be obtained.

Embodiment 2

[0027] Add 11.7g of acrylic resin and 3.9g of amino resin to the mixed resin under low-speed stirring and add 45ml of butyl acetate solvent. After the resin is completely dissolved, add 6.0g of wetting and anti-settling mixing aid and stir evenly.

[0028] Put 455g of high-purity zinc powder, 20g of aluminum powder, and 2.25g of high-purity rare earth lanthanum powder into the above resin slurry, stir at 1200-1500rpm for 30min at normal temperature and pressure, then reduce the speed to 600rpm, and continue stirring 10min, until the fineness is less than or equal to 20μm, the finished new high-efficiency zinc-rich coating can be obtained.

Embodiment 3

[0030] Add 11.1g of acrylic resin and 3.7g of amino resin to the mixed resin under low-speed stirring and add 45ml of butyl acetate solvent. After the resin is completely dissolved, add 7.0g of wetting and anti-settling mixing aid and stir evenly.

[0031] Add 455g of high-purity zinc powder with an average particle size of 1-2μm, 20g of aluminum powder, and 3g of high-purity rare earth lanthanum powder into the above-mentioned resin slurry, stir at a high speed of 1200-1500rpm at room temperature and pressure for 30min, then reduce the speed to 600rpm, and continue stirring for 10min , until the fineness is less than or equal to 20μm, the finished new high-efficiency zinc-rich coating can be obtained.

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Abstract

An efficient zinc-rich coating added with aluminum powder and a rare earth element is prepared from a dry film and a volatile solvent, wherein the dry film comprises the following components by mass percent: 91-95% of zinc powder, 1-5% of aluminum powder, 0.15-0.62% of rare earth powder, 2.0-6.6% of resin and 1.0-1.42% of auxiliary agent; and the volatile solvent is 10-30% of the total weight of the dry film. The invention further provides a preparation method of the efficient zinc-rich coating. The total content of zinc, aluminum and rare earth in the dry film is above 96% and the zinc content is 91%, so that physical and mechanical properties are excellent, corrosion performance is excellent, and no red rust exists within 4500 hours in a neutral salt spray test; acrylic resin and amino resin is taken as a resin solvent system and butyl acetate is taken as a diluent, so that the efficient zinc-rich coating is very low in toxicity and small in pollution, does not contain benzene, methylbenzene, dimethylbenzene and other undesirable components, and is safe and environment-friendly in production and use; and a product preparing process is simple and easy to operate, easy to implement and promote and wide in application prospect.

Description

technical field [0001] The invention belongs to the surface anticorrosion technology of iron and steel components, and relates to a high-efficiency zinc-rich coating added with aluminum powder and rare earth elements and its preparation. Background technique [0002] At present, the traditional steel protection at home and abroad is to use hot-dip galvanizing, hot-spray galvanizing, etc., but for large components, slender rod components, and components with cavities, if hot-dip galvanizing is used, there will be problems in production or installation. difficulty. Only a high content of zinc is added to the traditional zinc-rich coating, the content is about 80%, and its performance in the anti-corrosion process of large components is average, and the corrosion performance needs to be improved. [0003] The Chinese patent whose publication number is CN101445676A provides a kind of high-efficiency zinc-rich coating and its preparation. It adopts common active zinc powder, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D161/20C09D5/10
Inventor 李国新陈畅李秉洁
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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