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Preparation method for copper-based electric contact material with graphene

A technology of contact material and electric contact, applied in the direction of contacts, circuits, electric switches, etc., can solve the problems of reduced reliability and service life of contact materials, increase of contact resistance and low resistivity of contact elements, etc. Achieve the effects of avoiding contact resistance reduction, improving anti-welding resistance, and improving electrical properties

Inactive Publication Date: 2016-06-29
SUZHOU SICHUANGYUANBO ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the copper contact material is easily oxidized, copper oxide and cuprous oxide with low resistivity are produced, which increases the contact resistance of the contact element and makes it easy to heat up during use, resulting in the reliability of the contact material. and reduced service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The copper-based electrical contact material of the graphene of the present embodiment comprises the oxide of copper, tin, the oxide of dysprosium, the oxide of lanthanum and copper-plated graphene, and wherein the content of tin element is 5wt%, and the element content of dysprosium is 0.2wt%, the content of lanthanum element is 0.5wt%, copper-coated graphene 1.5wt% and unavoidable impurities, and the remaining elements are copper and oxygen.

[0023] Preparation of nano SnO by sol-gel method 2 Powder: SnCl 4 ·5H 2 O and TiCl 4 Add polyethylene glycol (PEG) dispersant to the aqueous alcohol solution, stir at a constant temperature, and add ammonia water dropwise to pH 6.9-7.2 at the same time, and obtain a gel after aging, washing, drying, and grinding, in which SnCl 4 ·5H 2 O and TiCl 4 The mass ratio of the alcohol is 8.5:1, and the volume ratio of alcohol to water in the alcohol aqueous solution is 2:1.

[0024] Copper-coated graphene is made by depositing met...

Embodiment 2

[0031] The copper-based electrical contact material of the graphene of the present embodiment comprises the oxide of copper, tin, the oxide of dysprosium, the oxide of lanthanum and copper-plated graphene, and wherein the content of tin element is 10wt%, and the element content of dysprosium is 0.5wt%, the content of lanthanum element is 1wt%, copper-coated graphene 2.5wt% and unavoidable impurities, and the remaining elements are copper and oxygen.

[0032] Preparation of nano SnO by sol-gel method 2 Powder: SnCl 4 ·5H 2 O and TiCl 4 Add polyethylene glycol (PEG) dispersant to the aqueous alcohol solution, stir at a constant temperature, and add ammonia water dropwise until the pH is 6.9-7.2, and obtain a gel after aging, washing, drying, and grinding, in which SnCl 4 ·5H 2 O and TiCl 4The mass ratio of the alcohol is 9:1, and the volume ratio of alcohol to water in the aqueous alcohol solution is 2:1.

[0033] Copper-coated graphene is made by depositing metallic silve...

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Abstract

The invention discloses a preparation method for a copper-based electric contact material with graphene. The copper-based electric contact material comprises copper, tin oxides, dysprosium oxides, lanthanum oxides and copper-plated graphene, wherein the content of the tin element is 5-10 wt%, the content of the dysprosium element is 0.2-0.5 wt%, the content of the lanthanum element is 0.5-1wt%, the content of the copper-plated graphene is 1.5-2.5 wt% and the balance comprises unavoidable impurities, and the balance elements are copper and oxygen. According to the copper-based electric contact material prepared by the preparation method, by optimally selecting the proportion of raw materials and technology, the material is enhanced in texture uniformity and improved in electrical property, particularly the rigidity and wear-resisting property of the material are improved by doping rare earth elements, and the interface wettability between the graphene and the metal is improved by the copper-plated graphene, thus the acquisition of the good interface bonding is facilitated, the electrical conductivity, heat-conducting property and anti-arc erosion performance of the composite material are further improved, and the performance requirement of the electric contact can be better met.

Description

technical field [0001] The invention relates to the field of electric equipment manufacturing, in particular to a method for preparing a copper-based electrical contact material with graphene. Background technique [0002] Electrical contact elements are contact elements of electrical switches, instruments and meters, etc., and are widely used in electric power and telecommunication systems, that is, home appliance control and other equipment. Copper-based electrical contact materials have developed rapidly due to their low contact resistance, strong resistance to welding, good wear resistance, and strong electrical erosion resistance. Among them, silver tin oxide electrical contact materials have developed rapidly in the past 10 years. A new environment-friendly electrical contact material that can replace the toxic silver cadmium oxide. It has good thermal stability, arc corrosion resistance and welding resistance, long service life and wide current range, so it can ensure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H1/025C22C1/05C22C9/00C22C32/00
CPCH01H1/025C22C1/05C22C9/00C22C32/00
Inventor 不公告发明人
Owner SUZHOU SICHUANGYUANBO ELECTRONICS TECH CO LTD
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