Composite contact material and preparation method thereof

A composite contact and pressing force technology, applied in contacts, metal processing equipment, electrical components, etc., can solve the problems of poor anti-vulcanization ability, low hardness, and material transfer tendency of pure silver contacts, and achieve good mechanical properties, The effect of high density and long service life

Active Publication Date: 2016-12-21
施海峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silver-based materials are the most widely used contact materials in the electronic and electrical industry, but pure silver contacts have disadvantages such as poor anti-sulfurization ability, low hardness, an

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] A composite contact material, prepared from the following components in parts by weight: 30 parts of silver powder, 15 parts of copper powder, 5 parts of aluminum powder, 1 part of titanium monoxide, 2 parts of tin dioxide, 1 part of copper oxide, nitriding 3 parts of boron, 4 parts of vinyl bis stearamide, 2 parts of glyceryl tristearate, 1 part of zinc stearate, 1 part of polyethyl acrylate, 2 parts of n-butyl stearate, 2 parts of liquid paraffin.

[0023] The preparation method of the composite contact material is as follows:

[0024] (1) Mix silver powder, copper powder, aluminum powder, titanium monoxide, tin dioxide, copper oxide and boron nitride, and stir for 5 minutes at a speed of 150r / min;

[0025] (2) Add vinyl bisstearamide, glyceryl tristearate and zinc stearate, and put it into a high-energy ball mill for ball milling for 20 minutes, wherein the ball-to-material ratio is 10:1;

[0026] (3) Pass through a 200-mesh sieve to remove large...

Example Embodiment

[0031] Example 2

[0032] A composite contact material, prepared from the following components in parts by weight: 35 parts of silver powder, 20 parts of copper powder, 6 parts of aluminum powder, 1.2 parts of titanium monoxide, 3 parts of tin dioxide, 1.2 parts of copper oxide, nitriding 3.5 parts of boron, 5 parts of vinyl bis stearamide, 3 parts of glyceryl tristearate, 1.2 parts of zinc stearate, 1.5 parts of polyethyl acrylate, 3 parts of n-butyl stearate, 2.5 parts of liquid paraffin.

[0033] The preparation method of the composite contact material is as follows:

[0034] (1) Mix silver powder, copper powder, aluminum powder, titanium monoxide, tin dioxide, copper oxide and boron nitride, and stir for 6 minutes at a speed of 160r / min;

[0035] (2) Add vinyl bisstearamide, glyceryl tristearate and zinc stearate, and put it into a high-energy ball mill for ball milling for 25 minutes, wherein the ball-to-material ratio is 9:1;

[0036] (3) Pass through a 200-mesh sieve ...

Example Embodiment

[0041] Example 3

[0042] A composite contact material, prepared from the following components in parts by weight: 40 parts of silver powder, 22.5 parts of copper powder, 7.5 parts of aluminum powder, 1.5 parts of titanium monoxide, 3.5 parts of tin dioxide, 1.5 parts of copper oxide, nitriding 4 parts of boron, 6 parts of vinyl bis stearamide, 3.5 parts of glyceryl tristearate, 1.5 parts of zinc stearate, 2 parts of polyethyl acrylate, 3.5 parts of n-butyl stearate, 3 parts of liquid paraffin.

[0043] The preparation method of the composite contact material is as follows:

[0044] (1) Mix silver powder, copper powder, aluminum powder, titanium monoxide, tin dioxide, copper oxide and boron nitride, and stir for 7 minutes at a speed of 165r / min;

[0045] (2) Add vinyl bisstearamide, glyceryl tristearate and zinc stearate, and put it into a high-energy ball mill for ball milling for 30 minutes, wherein the ball-to-material ratio is 7:1;

[0046] (3) Pass through a 200-mesh si...

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PUM

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Abstract

The invention provides a composite contact material and a preparation method thereof. The preparation method includes the following steps: (1) mixing and stirring silver powder, copper powder, aluminum powder, titanium monoxide, stannic oxide, copper(II) oxide, and boronnitride; (2) adding N,N-Ethylene Bis-stearamide, glycerol triStearate, and zinc stearate, putting the mixture into a high-energy ball grinding mill to perform ball grinding, wherein the ratio of ball to material is 10: 1-5: 1; (3) removing large particles through a 200 mesh screen; (4) adding poly(ethyl acrylate), butyl stearate, and liquid paraffin to stir and mix, and then performing compression moulding; (5) putting compressed blanks into a sintering furnace to perform sintering; (6) performing cooling, and then performing compression again; and (7) putting the blanks into the sintering furnace to perform sintering, and then performing extrusion forming, wherein the extrusion temperature is 600-800 DEG C. The composite material is large in density, is good in compactness, has excellent mechanical property, and is long in service life.

Description

technical field [0001] The invention relates to the field of electronic materials, in particular to a composite contact material and a preparation method thereof. Background technique [0002] Contact material is one of the key materials of switches, instruments and relays, etc. It is mainly responsible for the work of connecting, disconnecting, guiding and isolating current. Its performance directly affects the reliability, stability and accuracy of electrical appliances and service life, so the contact material is not only the key to electronics and electrical appliances, but also its fatal point, and it is an indispensable and important material in electronic technology. With the rapid development of science and technology, the continuous upgrading of electronic and electrical products, the application of contact materials is becoming more and more extensive, and the consumption is also increasing, ranging from electrical equipment, communication equipment, various contac...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F3/20C22C1/05C22C5/08C22C30/02C22C32/00H01H1/0237
CPCH01H1/0237C22C1/05C22C5/08C22C30/02C22C32/0005B22F3/20B22F2003/208B22F2998/10B22F1/10B22F3/10B22F3/02
Inventor 代长华
Owner 施海峰
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