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Preparation method of composite-metal-coated foam metal material

A technology of metal foam and composite metal, which is applied in the direction of metal material coating process, coating, liquid chemical plating, etc., can solve the problems of material failure and other problems, and achieve the effect of controllable metal content, simple overall process and large specific surface area

Active Publication Date: 2020-09-25
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nickel-iron foam metal material prepared by this method will be exposed to the corrosive medium when the surface anti-corrosion layer is corroded in acid, alkali and other corrosive medium environments, resulting in material failure.

Method used

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  • Preparation method of composite-metal-coated foam metal material
  • Preparation method of composite-metal-coated foam metal material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 Shown, a kind of preparation method of composite metal coating foam metal material may further comprise the steps:

[0036] (1) Degreasing, acidifying, sensitizing and activating the polyurethane foam (15cm×10cm×1cm) to obtain the modified polyurethane foam; wherein, the degreasing treatment is to remove the polyurethane foam with a potassium hydroxide solution with a concentration of 50g / L The oil pollution, the degreasing time is 20min, and the temperature is 70°C. Acidification treatment is to treat the polyurethane foam after degreasing in 1g / L oxalic acid solution for 20min, and then wash it to neutral with deionized water to obtain the polyurethane foam after pickling; sensitization treatment is to treat the polyurethane foam after pickling Treat it in a mixed solution of stannous chloride 5g / L and hydrochloric acid 5ml / L for 15 minutes, and then wash it with deionized water until neutral to obtain a sensitized polyurethane foam; The final polyure...

Embodiment 2

[0044] A method for preparing a composite metal-coated metal foam material, comprising the following steps:

[0045] (1) Degreasing, acidifying, sensitizing and activating the polyurethane foam (15cm×10cm×1cm) to obtain the modified polyurethane foam; wherein, the degreasing treatment is to remove the polyurethane foam with a potassium hydroxide solution with a concentration of 100g / L The oil pollution, the degreasing time is 10min, and the temperature is 70°C. Acidification treatment is to treat the polyurethane foam after degreasing in 3g / L oxalic acid solution for 20min, and then wash it to neutral with deionized water to obtain the polyurethane foam after pickling; sensitization treatment is to treat the polyurethane foam after pickling Treat it in a mixed solution of stannous chloride 8g / L and hydrochloric acid 10ml / L for 10 minutes, then wash it with deionized water until neutral to obtain a sensitized polyurethane foam; The final polyurethane foam was processed in 100m...

Embodiment 3

[0053] A method for preparing a composite metal-coated metal foam material, comprising the following steps:

[0054] (1) Degreasing, acidifying, sensitizing and activating the polyurethane foam (15cm×10cm×1cm) to obtain the modified polyurethane foam; wherein, the degreasing treatment is to remove the polyurethane foam with a potassium hydroxide solution with a concentration of 120g / L The oil stain, the degreasing time is 5min, and the temperature is 75°C. Acidification treatment is to treat the polyurethane foam after degreasing in 5g / L oxalic acid solution for 10min, and then wash it to neutral with deionized water to obtain the polyurethane foam after pickling; sensitization treatment is to treat the polyurethane foam after pickling Treat it in a mixed solution of stannous chloride 10g / L and hydrochloric acid 10ml / L for 10 minutes, then wash it with deionized water until neutral to obtain a sensitized polyurethane foam; The final polyurethane foam was processed in 200mg / mL...

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PUM

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Abstract

The invention discloses a preparation method of a composite-metal-coated foam metal material. The preparation method includes the following steps of firstly, modifying polyurethane foam; secondly, configuring a chemical plating solution A, an electroplating solution and a chemical plating solution B; thirdly, performing chemical plating; fourthly, performing electroplating; fifthly, performing heat treatment; sixthly, performing heating reduction treatment; and seventhly, performing chemical plating with the chemical plating solution to obtain the composite-metal-coated foam metal material. Bycombining the chemical plating with the electroplating, the prepared composite-metal-coated foam metal material has a bright and dense coating and a controllable metal content and coating thickness and also has a certain strength, a high specific surface area and high oxidation resistance and corrosion resistance.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a method for preparing foamed metal materials. Background technique [0002] Nickel-iron metal foam material, as a rapidly developing structural and functional material, is widely used in catalysts and catalyst carriers, high-temperature liquid filters, heat exchangers and other functional materials, and can also be used as structural materials in automobiles, construction and other fields. However, the preparation method of the traditional nickel-iron foam material is usually to perform electroless plating or electroplating on the polyurethane sponge through pretreatment steps such as degreasing, pickling, sensitization, and activation, and to plate nickel-iron and other alloy layers on the surface of the foam material. Thus, nickel-iron foam metal is prepared. The nickel-iron foam metal material prepared by this method will be exposed to the corrosive medium afte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/36C23C18/30C25D3/56C23C28/02
CPCC23C18/285C23C18/30C23C18/36C23C28/021C23C28/023C25D3/562
Inventor 甘雪萍赵琪刘晨虹李周周科朝
Owner CENT SOUTH UNIV
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