Preparation method for nano multihole copper film

A technology of nanoporous copper and copper powder, which is applied in the field of nanomaterials and powder metallurgy, can solve the problems of complex nanoporous metal process and high cost, and achieve the effect of stable reusable performance, low cost and wide sources

Inactive Publication Date: 2013-10-23
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the analysis of recently reported patents, such as CN101956090A, CN102766893A and other patents, requires high-temperature melting to obtain alloys, so the preparation of nanoporous metals by this method is not only complicated in process, but also relatively high in cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1, dissolving polyvinyl butyral (PVB) in absolute ethanol to obtain an organic bonding liquid; the mass percentage of polyvinyl butyral in the organic bonding liquid is 0.2%;

[0023] Step 2: Add 0.4 g of the organic bonding liquid described in step 1 to 10 g of copper powder, and stir evenly to obtain a copper powder slurry; the copper powder is spherical copper powder, and the mass purity of the copper powder is 99.95%. The diameter is 400nm, and the bulk density is 1.2g / cm 3 .

[0024] Step 3. Coat the copper powder slurry described in step 2 evenly on a 1cm×2cm copper sheet with a coating thickness of 15 μm, and then dry it. Dry the copper powder slurry coated with the copper powder slurry in a hydrogen atmosphere. The copper sheet is heat-treated to obtain a thickness of about 15 μm attached to the copper sheet and a specific surface area of ​​7 m 2 / g, aperture is 100nm~150nm, the nanoporous copper membrane of porosity 40%, the contact angle of nanoporous c...

Embodiment 2

[0027] Step 1, dissolving polyvinyl butyral (PVB) in ethylene glycol to obtain an organic bonding liquid; the mass percentage of polyvinyl butyral in the organic bonding liquid is 0.3%;

[0028] Step 2: Add 0.5 g of the organic bonding liquid described in step 1 to 10 g of copper powder, and stir evenly to obtain a copper powder slurry; the copper powder is spherical copper powder, and the mass purity of the copper powder is 99.95%, with an average particle size of The diameter is 50nm, and the bulk density is 1.8g / cm 3 .

[0029] Step 3: Coat the copper powder slurry described in step 2 evenly on the outer surface of the copper tube with a length of 100 mm and a diameter of 10 mm, with a coating thickness of 12 μm, and then dry it, and dry the coating after drying in a hydrogen atmosphere. The copper tube with copper powder slurry is heat-treated to obtain a thickness of about 12 μm attached to the copper tube and a specific surface area of ​​2 m 2 / g, aperture is 5nm~50nm,...

Embodiment 3

[0032] Step 1, dissolving polyvinyl butyral in methanol to obtain an organic bonding liquid; the mass percentage of polyvinyl butyral in the organic bonding liquid is 0.1%;

[0033] Step 2: Add 0.2 g of the organic bonding liquid described in step 1 to 10 g of copper powder, and stir evenly to obtain a copper powder slurry; the copper powder is spherical copper powder, and the mass purity of the copper powder is 99.95%. The diameter is 800nm, and the bulk density is 0.5g / cm 3 .

[0034] Step 3. Coat the copper powder slurry described in step 2 evenly on 1cm×2cm Al 2 o 3 sheet, coated with a thickness of 300 μm, and then dried, the Al 2 o 3 sheet is heat-treated to get attached to the Al 2 o 3 The thickness on the sheet is about 300μm, and the specific surface area is 13m 2 / g, aperture is 250nm~270nm, the nanoporous copper membrane of porosity 28%, the contact angle of nanoporous copper membrane and water is 40 °; The flow rate of described hydrogen is 2.5×10 -2 m 3 m...

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Abstract

The invention discloses a preparation method for a nano multihole copper film. The preparation method comprises the following steps of 1, dissolving polyvinyl butyral into an organic solvent to obtain an organic cementing solution, 2, adding the organic cementing solution into copper powder, and uniformly stirring the copper powder and the organic cementing solution to obtain copper powder slurry, and 3, uniformly coating the copper powder slurry on a carrier, and performing drying and thermal treatment to obtain the nano multihole copper film attached to the carrier, or uniformly coating the copper powder slurry on the carrier, performing drying and thermal treatment, and corroding the carrier by adopting hydrochloric acid to obtain the non-supported nano multihole copper film. According to the preparation method, raw materials are readily available; a preparation process is simple; the prepared nano multihole copper film is high in processibility, can be made into filtering devices of various shapes, is stable in reusability and can be used as a key component for micro-nano size filtration and separation. By the method, the nano multihole copper films of any shape on a load or the surface of the carrier or the non-supported nano multihole copper films can be obtained by controlling the shape of the carrier.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and powder metallurgy, and in particular relates to a preparation method of a nanoporous copper film. Background technique [0002] Nanoporous metal materials are porous metal materials with pore sizes on the nanometer scale. They have high specific surface area and special properties as nanomaterials. They can combine the physical, chemical and mechanical properties of metal materials with nanoporous properties. Metal Materials have new properties and can be applied to many new fields, surpassing the unique properties of traditional metal materials. [0003] The traditional method of preparing nanoporous metals mainly uses the template method. The basic principle of the template method is very clear, that is, to use a nanometer-sized "cage" to allow the nucleation and growth of the target material to be realized in the "nanocage". When done thoroughly, the size and structure of the "nanoca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/11
Inventor 李广忠汤慧萍支浩李纲康新婷李亚宁迟煜頔
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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