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Primer-topcoat cold-spray zinc coating and preparation method for same

A technology of cold spray zinc and coating, applied in anti-corrosion coatings, rosin coatings, polycarbonate coatings, etc., can solve the problems of gaps in arrangement, complicated operation steps, poor sealing performance of new coatings, etc., and achieve beautiful coating surface Effect

Inactive Publication Date: 2012-08-01
TIANCHANG JULONG TRAVEL PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, zinc powder is a granular metal, and there will be gaps between the arrangements, resulting in poor sealing of the new coating.
In the prior art, in order to solve this problem, the surface of the cold-coated zinc is generally coated with rubber-like paint to seal it, so as to achieve the ideal anti-corrosion effect, but the operation steps are cumbersome
[0008] The existing cold-sprayed zinc coatings are basically composed of film-forming substances (such as acrylic acid, polystyrene, epoxy), zinc powder, additives, solvents, etc. Some key technical indicators of this type of cold-sprayed zinc coatings, such as adhesion , resistance to neutral salt water, resistance to neutral salt spray, resistance to artificial accelerated aging and other indicators can not adapt to the harsh environment

Method used

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  • Primer-topcoat cold-spray zinc coating and preparation method for same
  • Primer-topcoat cold-spray zinc coating and preparation method for same
  • Primer-topcoat cold-spray zinc coating and preparation method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] A cold-sprayed zinc coating with bottom and surface is composed of the following components: thermoplastic solid acrylic resin B-66 (acid value 0.2mgKOH) 25kg; zinc powder 770kg; polyamide wax ULTRA 2kg; nano-silica solution VK- S01Y 25kg; solvent PMA 178kg.

[0070] The preparation method of described cold spray zinc paint:

[0071] 1. First add 100kg of solvent PMA into the reaction kettle;

[0072]2. Start the disperser to 400 rpm, add 25kg of thermoplastic solid acrylic resin B-66, dissolve until transparent;

[0073] 3. Add 770kg of zinc powder slowly, and increase the speed of the disperser to 1200 rpm until the paint fineness is less than 40 microns;

[0074] 4. When the temperature of the paint naturally rises to 50-60 degrees, the speed of the disperser is reduced to 800 rpm, and 2kg of polyamide wax ULTRA is added, and stirred for 30 minutes;

[0075] 5. Add the remaining 78kg solvent PMA and stir for 15 minutes;

[0076] 6. Reduce the speed of the dispers...

Embodiment 2

[0081] A kind of cold-sprayed zinc coating with bottom and surface is composed of the following components: 10 kg of thermoplastic solid polycarbonate resin (acid value 0.8 mgKOH); 900 kg of zinc powder (purity ≥ 99.5%, particle size 20-30 μm); 1 kg of olefin wax; 10 kg of nano silicon dioxide solution (10-30 nm in particle size, 10 wt %); 79 kg of solvent butyl ether acetate.

[0082] The preparation method of described cold spray zinc paint:

[0083] 1. First add 39kg of ethylene glycol butyl ether acetate into the reaction kettle;

[0084] 2. Start the disperser to 200 rpm, add thermoplastic solid polycarbonate resin, dissolve until transparent;

[0085] 3. Slowly add zinc powder, and increase the speed of the disperser to 1300 rpm until the paint fineness is less than 50 microns;

[0086] 4. When the temperature of the paint naturally rises to 45-60 degrees, the speed of the disperser is reduced to 850 rpm, and polyolefin wax is added, and stirred for 30 minutes;

[008...

Embodiment 3

[0090] A cold-sprayed zinc coating with bottom surface combined with the following components: 100kg of thermoplastic polymerized modified rosin resin (acid value 0.3mgKOH); 750kg of zinc powder (particle size 2-20μm, purity ≥ 99.9%); modified 10kg of hydrogenated castor oil; 100kg of nano silicon dioxide solution (20-50nm in particle size, 30wt% concentration); 40kg of solvent ethylene glycol ether acetate.

[0091] The preparation method of described cold spray zinc paint:

[0092] 1. First add 67kg of ethylene glycol ether acetate into the reaction kettle;

[0093] 2. Start the disperser to 500 rpm, add thermoplastic polymerized modified rosin resin, dissolve until transparent;

[0094] 3. Slowly add zinc powder, and increase the speed of the disperser to 1000 rpm until the paint fineness is less than 40 microns;

[0095] 4. When the temperature of the paint naturally rises to 55-70 degrees, the speed of the disperser is reduced to 550 rpm, and the modified hydrogenated c...

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Abstract

The invention relates to primer-topcoat cold-spray zinc coating, which comprises zinc powder, organic solvent, organic resin and filler, wherein the organic resin refers to thermoplastic resin, and the filler is silicon dioxide solution. The primer-topcoat cold-spray zinc coating is longer in anticorrosion service life, good in primer compatibility and compact in coating layer surface, and has good primer performances such as adhesion, anticorrosion and the like and fine weather resistance of topcoat.

Description

technical field [0001] The invention relates to a cold-sprayed zinc coating and a preparation method thereof, in particular to a one-component bottom-surface-integrated cold-sprayed zinc coating and a preparation method thereof, belonging to the technical field of heavy-duty anti-corrosion coatings. Background technique [0002] Heavy-duty coating refers to a type of anti-corrosion coating that can be applied in a relatively harsh corrosive environment and has a longer protection period than conventional anti-corrosion coatings. The dry film thickness of heavy-duty anti-corrosion coatings is above 200 μm or 300 μm, and 500 μm-1000 μm, even as high as 2000 μm, while the dry film thickness of ordinary anti-corrosion coatings is only about 100 μm or 150 μm. Therefore, the heavy-duty anti-corrosion coating can be used under harsh conditions and has a long anti-corrosion life. For example, heavy-duty anti-corrosion coatings can generally be used for more than 10 or 15 years in c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D133/12C09D133/10C09D169/00C09D193/04C09D123/12C09D7/12C09D5/10
Inventor 孙巨福
Owner TIANCHANG JULONG TRAVEL PAINT
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