Preparation method of foamed copper

A technology of foamed copper and polyurethane foam is applied in the field of the preparation of porous foamed metal materials, which can solve the problems of uneven distribution of foamed copper pore structure, high porosity of foamed copper, large specific surface area, etc., and achieves good strength and toughness, and high porosity. , the effect of large specific surface area

Inactive Publication Date: 2014-10-08
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a method for preparing foamed copper in order to solve the problem of uneven distribution of foamed copper pore structure and small specific surface area obtained by the foamed copper preparation process of the prior art. The preparation method of the present invention has simple process steps and is easy to process. control, low cost, through the overall optimization of the copper foam preparation process, the obtained foam copper has high porosity, uniform pore structure distribution, large specific surface area, good strength and toughness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Degreasing: Soak the polyurethane foam material with a porosity ≥ 90% in a degreasing solution at a temperature of 40°C for 10 minutes and then rinse it with distilled water. The volume is 5L / min, and the formula of degreasing liquid is: sodium carbonate 30g / L, sodium phosphate 30g / L, sodium lauryl sulfate 15 g / L.

[0035] (2) Primary roughening: Put the degreased polyurethane foam in the first roughening solution for primary roughening. The formula of the first roughening solution is: potassium permanganate 10g / L, sulfuric acid 7mL / L, The primary roughening time is 5 minutes, and the temperature is 35°C. During the primary roughening, the polyurethane foam material is continuously squeezed with a glass rod. After the primary roughening, the polyurethane foam material is rinsed with distilled water and squeezed dry.

[0036] (3) Secondary roughening: put the polyurethane foam material after primary roughening into the second roughening solution for secondary roughen...

Embodiment 2

[0045] (1) Degreasing: Soak the polyurethane foam material with a porosity ≥ 90% in a degreasing solution at a temperature of 50°C for 9 minutes and then rinse it with distilled water. The volume is 7L / min, and the formula of degreasing liquid is: sodium carbonate 35g / L, sodium phosphate 26g / L, sodium lauryl sulfate 12 g / L.

[0046] (2) Primary roughening: Put the degreased polyurethane foam in the first roughening solution for primary roughening. The formula of the first roughening solution is: potassium permanganate 9g / L, sulfuric acid 6mL / L, The primary roughening time is 7 minutes, and the temperature is 38°C. During the primary roughening, the polyurethane foam material is continuously squeezed with a glass rod. After the primary roughening, the polyurethane foam material is rinsed with distilled water and squeezed dry.

[0047] (3) Secondary roughening: Put the polyurethane foam material after primary roughening into the second roughening solution for secondary roughenin...

Embodiment 3

[0056] (1) Degreasing: Soak the polyurethane foam material with a porosity ≥ 90% in a degreasing solution at a temperature of 60°C for 8 minutes and then rinse it with distilled water. The volume is 10L / min, and the formula of degreasing liquid is: sodium carbonate 40g / L, sodium phosphate 25g / L, sodium lauryl sulfate 10 g / L.

[0057] (2) Primary roughening: Put the degreased polyurethane foam in the first roughening solution for primary roughening. The formula of the first roughening solution is: potassium permanganate 8g / L, sulfuric acid 5mL / L, The primary roughening time is 10 minutes, and the temperature is 40°C. During the primary roughening period, the polyurethane foam material is continuously squeezed with a glass rod. After the primary roughening, the polyurethane foam material is rinsed with distilled water and squeezed dry.

[0058] (3) Secondary roughening: put the polyurethane foam material after primary roughening into the second roughening solution for secondary ...

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Abstract

The invention discloses a preparation method of foamed copper to solve the problems of nonuniform pore structure distribution and small specific surface area of foamed copper obtained by existing foamed copper preparation processes. The method mainly comprises the steps of: (1) oil removal; (2) first coarsening; (3) second coarsening; (4) sensitization; (5) activation; (6) dispergation; (7) electroless copper plating; (8) step-by-step electroplating; and (9) heat treatment. The preparation method provided by the invention has the characteristics of simple technological steps, easily controllable process and low cost. By wholly optimizing the foamed copper preparation process, the obtained foamed copper has the advantages of high porosity, uniform pore structure distribution, large specific surface area, and good strength and toughness.

Description

technical field [0001] The invention relates to the technical field of preparation of porous metal foam materials, in particular to a method for preparing foam copper. [0002] Background technique [0003] Copper foam is a new multifunctional material with a large number of connected or disconnected pores evenly distributed in the copper matrix. Copper foam has good conductivity and ductility, and its preparation cost is lower than that of nickel foam, and its conductivity is better. It can be used to prepare battery negative electrode (carrier) materials, catalyst carriers and electromagnetic shielding materials. [0004] Publication number CN1552950A, the Chinese patent published on December 8, 2004 discloses a process for producing copper foam at a constant speed, using polyurethane foam as the substrate, after surface treatment and chemical treatment, direct electroless copper plating, and then electroplating The copper is thickened to form a semi-finished product, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C5/02C23C18/20C23C18/38C25D3/38C22F1/08
Inventor 惠国华
Owner ZHEJIANG GONGSHANG UNIVERSITY
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