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Metal/polymer composite powder core wire material, metal/polymer composite coating and preparation method thereof

A composite coating, polymer material technology, applied in metal material coating process, coating, melt spraying and other directions, can solve the problems of low mechanical properties of polymer layer, loss of barrier effect, failure and so on

Active Publication Date: 2020-07-07
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of the polymer layer coated on the surface are low, and it is easy to fail due to external mechanical force, thus losing the barrier effect.

Method used

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  • Metal/polymer composite powder core wire material, metal/polymer composite coating and preparation method thereof
  • Metal/polymer composite powder core wire material, metal/polymer composite coating and preparation method thereof
  • Metal/polymer composite powder core wire material, metal/polymer composite coating and preparation method thereof

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preparation example Construction

[0046] Such as figure 1 Shown, the preparation method of metal / polymer composite coating provided by the invention comprises the steps:

[0047] (1) prepare metal / polymer composite strip;

[0048] (2) prepare metal / polymer composite powder core wire material;

[0049] (3) Carry out surface degreasing and roughening treatment to the substrate;

[0050] (4) Using the metal / polymer composite powder core wire material prepared in step (2) as a spray coating material, a metal / polymer composite coating is prepared on the surface of the substrate treated in step (3) by thermal spraying.

Embodiment 1

[0052] In this embodiment, the thickness of the substrate is a Q235 steel sheet of 2 mm, and the thickness of the Al / PE composite coating on the surface of the substrate is 500 μm. The specific preparation method is as follows:

[0053] 1. First, flame spray a layer of PE with a thickness of 10 μm on the 5052 aluminum alloy with a width of 7 mm and a thickness of 0.4 mm. The parameters of the flame spraying are: the supporting gas is O 2 , the pressure is 0.55MPa; the gas is acetylene, the pressure is 0.075MPa; the auxiliary gas is compressed air, the pressure is 0.8MPa, the powder feeding rate is 60g / min, the spraying distance is 250mm, the flame spray gun moving speed is 200mm / s, the number of spraying times 1 pass to obtain the Al / PE composite strip;

[0054] 2. Send the Al / PE composite strip into the roller, roll it into a groove shape, then send the PE powder into the groove, set the filling rate to 41%, close the metal strip through the roller, roll it into a circle, and...

Embodiment 2

[0061] In the present embodiment, the thickness of the matrix is ​​45 steel sheets of 2mm, and the stainless steel on the surface of the matrix

[0062] The thickness of the / PMMA composite coating is 500 μm, and the specific preparation method is as follows:

[0063] 1, be that width is 7mm, the thickness is the PMMA solution (20%) of 10 μ m that the stainless steel band of 0.4 mm is brushed one deck thickness, obtains stainless steel / PMMA composite strip;

[0064] 2. Feed the stainless steel / PMMA composite strip into the roll, roll it into a groove shape, then feed the PMMA powder into the groove, set the filling rate to 41%, close the metal strip through the roll, roll it into a circle, and then sequentially The diameter is gradually reduced to 1.97mm through the wire drawing dies of 2.65mm, 2.45mm, 2.20mm and 1.97mm, and the stainless steel / PMMA composite powder core wire is obtained;

[0065] 3. Sandblast the substrate with white corundum;

[0066] 4. The arc spraying p...

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Abstract

The invention discloses a metal / polymer compound powder core wire material, a metal / polymer compound coating and a preparation method thereof. The metal / polymer compound powder core wire material sequentially comprises a metal band, a middle layer and a powder core, wherein the metal band and the middle layer coated on the surface of the metal band form an outer cover covering the powder core; andthe filling rate of the powder core is 5 to 45 percent. The metal / polymer compound coating comprises metal and a polymer, wherein the volume fraction of the metal is 50 to 95 percent; the volume fraction of the polymer is 5 to 50 percent; and the metal / polymer compound coating is formed by spraying and depositing the metal / polymer compound powder core wire material onto a base body. The metal / polymer compound coating provided by the invention can be favorably combined with the base body, and the polymer is uniformly distribute in the whole coating, so that the metal / polymer compound coating has excellent corrosion resistance and can be applied to outer surfaces of multiple industrial parts for sea and other occasions requiring corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of metal and polymer coatings, in particular to a metal / polymer composite powder core wire material, a metal / polymer composite coating and a preparation method thereof. Background technique [0002] In recent years, with the continuous development of the marine industry, the corrosion of marine engineering materials has become the focus of attention in the world. In particular, my country has abundant marine resources. While developing and utilizing marine resources, losses caused by marine corrosion should be minimized. Corrosion of marine engineering materials has been widely studied at home and abroad, and good results have been achieved through the selection of corrosion-resistant materials, surface coatings, cathodic protection, and coating of anti-corrosion coatings. Marine corrosion has great damage to marine engineering materials, reducing the service life of materials and causing serious economic lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/12C23C4/131C23C4/129C23C4/04
CPCC23C4/04C23C4/12C23C4/129C23C4/131
Inventor 所新坤王晓霞黄晶龚永锋周平陈秀勇李华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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