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Method for preparing carbon-copper fibre integral fabric/carbon-copper based composite material

A copper-based composite material and copper fiber technology, applied in chemical instruments and methods, lamination devices, lamination auxiliary operations, etc., can solve the problems of large fluctuations in product performance, unsuitable for mass production, and large equipment investment, etc., and achieve easy Achieve industrialization, good electrical conductivity, and improve the effect of mechanical properties

Inactive Publication Date: 2010-12-15
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large investment and high operating costs of the carbon skeleton impregnation method, it is not economical to produce sliding conductive materials with high consumption. In addition, the performance of the products prepared by the impregnation process fluctuates greatly, which is not suitable for mass production.

Method used

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  • Method for preparing carbon-copper fibre integral fabric/carbon-copper based composite material
  • Method for preparing carbon-copper fibre integral fabric/carbon-copper based composite material
  • Method for preparing carbon-copper fibre integral fabric/carbon-copper based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Use 3K carbon fiber and 1 Φ0.1mm copper wire to wind and softly weave into a two-dimensional network. The 10μm natural flake graphite powder, the amount of graphite powder sprinkled is about 100g per square meter, and the chemical vapor infiltration is carried out for 80h; the infiltration agent containing 5wt% Ti is prepared; the composite green body is embedded with the prepared infiltration agent. Under vacuum conditions, the temperature was kept at 1100°C for 15 minutes to prepare a carbon-copper fiber integrated fabric / carbon-copper matrix composite material numbered A. Its SEM photos are attached figure 1 .

Embodiment 2

[0018] A combination of 12K carbon fiber and Φ0.1mm copper wire is used to wind and softly weave into a two-dimensional network. The 10μm natural flake graphite powder, the amount of graphite powder sprinkled is about 150g per square meter, and the chemical vapor infiltration is carried out for 100h; the infiltration agent containing 7wt%Ti is prepared; the composite green body is embedded with the prepared infiltration agent, and the Under vacuum conditions, heat preservation at 1300°C for 15 minutes, and a carbon-copper fiber integrated fabric / carbon-copper matrix composite material numbered B was prepared.

Embodiment 3

[0020] Use 6K carbon fiber and 1 Φ0.1mm copper wire to wind and softly weave into a two-dimensional network. The 10μm natural flake graphite powder, the amount of graphite powder sprinkled is about 200g per square meter, and the chemical vapor infiltration is carried out for 120h; the infiltration agent containing 10wt% Ti is prepared; the composite green body is embedded with the prepared infiltration agent, and the Under vacuum conditions, the temperature was kept at 1500°C for 5 minutes to prepare a carbon-copper fiber integrated fabric / carbon-copper matrix composite material numbered C.

[0021] Table 1 is the main performance index of A, B, and C three kinds of carbon-copper fiber integral fabrics / carbon-copper matrix composites obtained by implementing 1~3. In addition, the comparative sample 1 is a J204 copper graphite brush, and the comparative sample 2 is a sliding plate material imported from Germany. It can be seen from Table 1 that, compared with the carbon-copper...

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Abstract

The invention discloses a method for preparing a copper-carbon fiber integrate fabric / copper-carbon base composite material and is characterized by including the following steps: weaving a two dimensional network with carbon fibres and copper wires, and then laminating; uniformly scattering graphite powder with particle size of less than or equal to 10 micrometers among the lamination, and then vertically penetrating through the assembly of the carbon fibres and copper wires to obtain a copper-carbon composite body with density ranging from 1.8g / cm<3> to 3.0g / cm<3> by a chemical vapor immerision for 80h to 120h; preparing an infiltration agent which is obtained by mixing copper powder and titanium powder; infiltrating and embedding the composite body for 5min to 15min by the infiltration agent under the conditions of vacuum and temperature ranging from 1100 DEG C to 1500 DEG C. The composite material made by the method overcomes the defects of the mechanical property of the existing copper-carbon materials; the composite material is superior to the existing materials in bending strength, also the composite material has excellent self lubrication wear resistance and high conductivity. The method of the invention is simple in technique and low in cost.

Description

technical field [0001] The invention relates to the field of sliding conductive composite materials, in particular to carbon / copper composite materials. Background technique [0002] Carbon / copper composite material is a pseudo-alloy formed by uniform mixing of immiscible carbon and copper phases. It has both the physical properties of carbon and copper materials. It is widely used, such as friction materials, oil bearings, electrical contact materials, conductive materials and mechanical parts materials. In recent years, carbon / copper composites have become the first choice for modern sliding conductive materials due to their excellent electrical conductivity, wear reduction and wear resistance, and have broad application prospects. [0003] From the point of view of the use requirements, the sliding conductive material should meet the following basic conditions: low friction coefficient, small wear on the counterpart material, small self-wear, low resistivity, and high st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B38/00B32B37/14B32B37/24B32B9/00
Inventor 冉丽萍杨琳易茂中
Owner CENT SOUTH UNIV
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