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Preparation method of silver-based graphene electric contact material and electric contact material

An electrical contact material and graphene technology, applied in the field of materials, can solve the problems of poor mechanical properties and electrical properties, poor bonding, and poor dispersibility of electrical contact materials, so as to improve the interface bonding state, improve electrical life, improve mechanical properties and The effect of electrical properties

Active Publication Date: 2019-12-27
WENZHOU JUXING ELECTRIC CONTACT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, there are disadvantages of poor combination and dispersion, and poor mechanical and electrical properties of the prepared electrical contact material

Method used

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  • Preparation method of silver-based graphene electric contact material and electric contact material
  • Preparation method of silver-based graphene electric contact material and electric contact material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Preparation of nickel / graphene composite powder

[0032] 1) Prepare 0.1mol / L nickel nitrate solution and 0.2mol / L glucose solution;

[0033] 2) Mix the glucose solution with the 0.5% graphene oxide solution at a mass ratio of 100:1, and ionic stir to obtain a mixed solution. Take the nickel nitrate solution and add it to the above mixed solution at a volume ratio of 4:5, and continue the ionic stirring. Nickel nitrate reacts with glucose to form nickel particles, and graphene oxide is adsorbed by nickel powder to obtain a nickel / graphene oxide suspension. The silver / graphene oxide suspension is centrifuged and washed, and freeze-dried to obtain nickel / graphene oxide composite powder.

[0034] 3) The nickel / graphene oxide composite powder is heated and reduced at 600° C. for 3 hours in a hydrogen atmosphere to obtain a nickel / graphene composite powder.

[0035] 2. Preparation of copper / nickel / graphene composite powder

[0036] Evenly mix the copper powder with a pa...

Embodiment 2

[0046] 1. Preparation of nickel / graphene composite powder

[0047] 1) Prepare 0.1mol / L nickel nitrate solution and 0.2mol / L glucose solution;

[0048] 2) Mix the glucose solution with the 0.5% graphene oxide solution at a mass ratio of 100:1, and ionic stir to obtain a mixed solution. Take the nickel nitrate solution and add it to the above mixed solution at a volume ratio of 4:5, and continue the ionic stirring. Nickel nitrate reacts with glucose to form nickel particles, and graphene oxide is adsorbed by nickel powder to obtain a nickel / graphene oxide suspension. The silver / graphene oxide suspension is centrifuged and washed, and freeze-dried to obtain nickel / graphene oxide composite powder.

[0049] 3) The nickel / graphene oxide composite powder was heated and reduced at 580° C. for 3.5 hours in a hydrogen atmosphere to obtain a nickel / graphene composite powder.

[0050] 2. Preparation of copper / nickel / graphene composite powder

[0051] Evenly mix the copper powder with a...

Embodiment 3

[0061] 1. Preparation of nickel / graphene composite powder

[0062] 1) Prepare 0.1mol / L nickel nitrate solution and 0.2mol / L glucose solution;

[0063] 2) Mix the glucose solution with the 0.5% graphene oxide solution at a mass ratio of 100:1, and ionic stir to obtain a mixed solution. Take the nickel nitrate solution and add it to the above mixed solution at a volume ratio of 4:5, and continue the ionic stirring. Nickel nitrate reacts with glucose to form nickel particles, and graphene oxide is adsorbed by nickel powder to obtain a nickel / graphene oxide suspension. The silver / graphene oxide suspension is centrifuged and washed, and freeze-dried to obtain nickel / graphene oxide composite powder.

[0064] 3) The nickel / graphene oxide composite powder is heated and reduced at 580° C. for 3 hours in a hydrogen atmosphere to obtain a nickel / graphene composite powder.

[0065] 2. Preparation of copper / nickel / graphene composite powder

[0066] Evenly mix the copper powder with a pa...

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Abstract

The invention relates to a preparation method of a silver-based graphene electric contact material and the electric contact material prepared by the preparation method. The preparation method comprises the following steps that 1, nickel / graphene composite powder is prepared; 2, the nickel / graphene composite powder prepared in the step 1 and copper powder are mixed to prepare copper / nickel / graphenecomposite powder; 3, the copper / nickel / graphene composite powder prepared in the step 2 is prepared into a copper / nickel / graphene composite foam body; and 4, infiltration is carried out on the copper / nickel / graphene composite foam body prepared in the step 3 and a silver infiltration sheet to obtain the silver / copper / nickel / graphene composite electric contact material. The silver-based grapheneelectric contact material prepared by the method has an excellent mechanical property and an excellent electrical property.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a method for preparing a silver-based graphene electrical contact material and the prepared electrical contact material. Background technique [0002] Electric contacts, also known as contacts, contacts or contacts, are contact parts in electrical switches, instruments, etc., and are responsible for the task of connecting, carrying and breaking current. Therefore, its performance directly affects switching electrical appliances and instruments. operational reliability. The electrical contact process is a complex physical process, which often requires electrical contact materials to have high electrical conductivity, low contact resistance, high thermal conductivity, high wear resistance, corrosion resistance, and impact resistance. Electrical contact materials have a history of nearly 100 years. At first, pure silver, pure gold, and pure platinum were used as contact materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F9/22B22F9/04B22F3/11B22F3/10B22F3/24B22D19/00H01H11/04H01H1/0233
CPCB22F9/24B22F9/22B22F9/04B22F3/114B22F3/1021B22F3/24B22D19/0072H01H11/048H01H1/0233B22F2009/245B22F2009/043B22F2003/248Y02E60/10
Inventor 黄光临陈静
Owner WENZHOU JUXING ELECTRIC CONTACT TECH
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