Copper element modified carbon fiber reinforced copper-based contact material and preparation method thereof

A fiber-reinforced, contact material technology, applied in the direction of contact materials, metal material coating technology, contacts, etc., can solve the problems of material performance degradation, poor bonding state, etc., and achieve friction coefficient reduction, conductivity improvement, parameter easy to control effects

Active Publication Date: 2022-02-15
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This poorly bonded state significantly degrades material properties and is the least desirable state of interfacial bonding in composites

Method used

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  • Copper element modified carbon fiber reinforced copper-based contact material and preparation method thereof
  • Copper element modified carbon fiber reinforced copper-based contact material and preparation method thereof
  • Copper element modified carbon fiber reinforced copper-based contact material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Firstly, put the carbon fiber in a muffle furnace for burning and degumming, where the heating temperature is 400°C and the heating time is 30min.

[0048] Put the carbon fiber after degumming into NaOH with a concentration of 20g / L and NaOH with a concentration of 10g / L 2 CO 3 In the alkaline degreasing agent, the temperature of the water bath is 55°C, ultrasonically oscillated for 30 minutes, and washed with distilled water until neutral.

[0049] The degreased carbon fibers were placed in a mixture of concentrated sulfuric acid and concentrated nitric acid (volume ratio 2.5:1) and ultrasonically oscillated for 10 minutes, then placed in a collector-type constant temperature heating magnetic stirrer for 50 minutes, and the temperature of the water bath was 55 ° C. Wash with distilled water until neutral.

[0050] Place the roughened carbon fiber in 45g / L SnCl 2 and 85ml / L HCl mixed solution (volume ratio 1:1.2), using a collector type constant temperature heating m...

Embodiment 2

[0062] Put the carbon fiber in a muffle furnace for burning and degumming, where the heating temperature is 500°C and the heating time is 45min.

[0063] Put the carbon fiber after degumming into NaOH with a concentration of 30g / L and NaOH with a concentration of 15g / L 2 CO 3 In the alkaline degreasing agent, the temperature of the water bath is 60°C, ultrasonically oscillated for 35 minutes, and washed with distilled water until neutral.

[0064] The degreased carbon fiber was placed in a mixture of concentrated sulfuric acid and concentrated nitric acid (volume ratio 2.5:1) and ultrasonically oscillated for 15 minutes, then placed in a collector type constant temperature heating magnetic stirrer for 55 minutes, and the temperature of the water bath was 60 ° C. Wash with distilled water until neutral.

[0065] Place the roughened carbon fiber in 50g / L SnCl 2 and 90ml / L HCl mixed solution (volume ratio 1:1.2), using a collector type constant temperature heating magnetic sti...

Embodiment 3

[0072] The carbon fiber is placed in a muffle furnace for burning and degumming, where the heating temperature is 600°C and the heating time is 60 minutes.

[0073] Put the carbon fiber after degumming into NaOH with a concentration of 40g / L and NaOH with a concentration of 20g / L 2 CO 3 In the alkaline degreaser, the temperature of the water bath is 65°C, ultrasonically oscillated for 40 minutes, and washed with distilled water until neutral.

[0074] The degreased carbon fiber was placed in a mixture of concentrated sulfuric acid and concentrated nitric acid (volume ratio 2.5:1) and ultrasonically oscillated for 20 minutes, then placed in a collector type constant temperature heating magnetic stirrer for 60 minutes, and the temperature of the water bath was 65 ° C. Wash with distilled water until neutral.

[0075] Place the roughened carbon fiber in 55g / L SnCl 2 and 100ml / L HCl mixed solution (volume ratio 1:1.2), using a collector type constant temperature heating magneti...

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PUM

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Abstract

The invention discloses a preparation method of a copper element modified carbon fiber reinforced copper-based contact material. The preparation method comprises the following steps: (1) pretreating carbon fibers; (2) placing the pretreated carbon fibers in a plating solution for chemical plating of a copper metal layer on the surfaces of the carbon fibers, cleaning and drying after copper plating is completed, and obtaining copper element modified carbon fibers; (3) mixing the copper element modified carbon fibers and electrolytic copper powder in an argon atmosphere according to a mass ratio of 2: (8-9); and (4) loading mixed copper element modified carbon fiber-copper powder into a high-strength graphite mold to be subjected to vacuum hot pressing sintering, and obtaining the copper element modified carbon fiber reinforced copper-based contact material after demolding. The invention further discloses the copper element modified carbon fiber reinforced copper-based contact material prepared by the method. According to the invention, the interface bonding between the carbon fibers and copper is improved, and the copper-based contact material with excellent performance is obtained.

Description

technical field [0001] The invention relates to a copper-based contact material, in particular to a copper-element-modified carbon fiber-reinforced copper-based contact material and a preparation method thereof. Background technique [0002] Contact material is an important part of the switch system, and its tribological performance is directly related to the performance of the switch, and has been highly concerned by tribology scholars. Copper-based composite materials are expected to improve the service reliability and service life of switch contacts due to their excellent electrical and thermal conductivity, good wear resistance and corrosion resistance. Carbon fiber has excellent mechanical and conductive properties, and it is also an allotrope of graphite, which acts as a lubricant and reduces the friction factor of the material. Therefore, carbon fiber reinforced copper matrix composites are expected to be ideal contact materials and have aroused great interest among ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/14C22C49/02C22C49/14C23C18/18C23C18/40B22F3/14H01H1/02H01H1/025H01H1/027H01H11/04C22C101/10
CPCC22C47/14C22C49/02C22C49/14C23C18/405B22F3/14C23C18/1893H01H1/02H01H1/025H01H1/027H01H11/04
Inventor 刘洋赈李卫舒鑫曾大海涂小慧
Owner JINAN UNIVERSITY
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