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Mixed metal powder, preparation method, conductive silver pulp and use

A mixed metal and metal silver technology, which is applied in the field of metal powder processing, can solve the problems of unstable silver-plated copper powder, decreased powder conductivity, and easy oxidation of copper elements, so as to achieve difficult migration, no decrease in electrical conductivity, and excellent comprehensive performance. performance effect

Active Publication Date: 2017-06-20
湖南省国银新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The silver-plated copper powder prepared in this way is also unstable, and the copper element is easily oxidized, resulting in a decrease in the overall powder conductivity

Method used

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  • Mixed metal powder, preparation method, conductive silver pulp and use
  • Mixed metal powder, preparation method, conductive silver pulp and use
  • Mixed metal powder, preparation method, conductive silver pulp and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of preparation method step of mixed metal powder is:

[0025] (1) first add oleic acid and cetyl alcohol in deionized water;

[0026] (2) Adding zirconium hydride powder and silver nitrate with an average particle diameter of 1.5 microns successively, then heating to 50 degrees, and insulated for 0.5 hours;

[0027] (3) add sodium carbonate then, insulation 0.5 hour;

[0028] (4) Finally add glucose and glycerol and keep warm for 2 hours to obtain a mixed metal powder suspension;

[0029] (5) The obtained mixed metal powder suspension is cleaned with de-distilled water, and the washing solution reaches about 7 to a pH value;

[0030] (6) Remove part of the moisture from the mixed metal powder suspension to obtain a ratio of 1:1 between the mixed metal powder and water;

[0031] (7) Finally, zirconium balls are added for ball milling to obtain a mixed metal powder with an average particle size of 1.8 microns. The silver content in the test analysis is 20%, the ...

Embodiment 2

[0033] A kind of preparation method step of mixed metal powder is:

[0034] (1) first add oleic acid and myristyl alcohol in deionized water;

[0035] (2) Add tungsten hydride powder and silver nitrate with an average particle size of 1.1 microns in turn, then heat to 50 degrees and keep warm for 0.5 hours;

[0036] (3) add sodium carbonate then, insulation 0.5 hour;

[0037] (4) After finally adding dodecanal and glycerin, it was incubated for 2 hours to obtain a mixed metal powder suspension;

[0038] (5) The obtained mixed metal powder suspension is cleaned with de-distilled water, and the washing solution reaches about 7 to a pH value;

[0039] (6) Remove part of the moisture from the mixed metal powder suspension to obtain a ratio of 1:1 between the mixed metal powder and water;

[0040] (7) Finally, zirconium balls are added for ball milling to obtain a mixed metal powder with an average particle size of 2.0 microns. The silver content in the test analysis is 17%, the...

Embodiment 3

[0042] A kind of preparation method step of mixed metal powder is:

[0043] (1) add oleic acid and stearic acid in deionized water earlier;

[0044](2) Add titanium hydride powder and silver nitrate with an average particle size of 1.2 microns in turn, then heat to 45°C and keep warm for 1 hour;

[0045] (3) Add sodium carbonate then, keep warm for 1 hour;

[0046] (4) After finally adding dodecanal and glycerin, it was incubated for 2 hours to obtain a mixed metal powder suspension;

[0047] (5) The obtained mixed metal powder suspension is cleaned with de-distilled water, and the washing solution reaches about 7 to a pH value;

[0048] (6) Remove part of the moisture from the mixed metal powder suspension to obtain a ratio of 1:1 between the mixed metal powder and water;

[0049] (7) Finally, zirconium balls are added for ball milling to obtain a mixed metal powder with an average particle size of 1.2 microns. The silver content in the test analysis is 19%, the titanium c...

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Abstract

The invention relates to the field of metal powder processing, and specifically relates to mixed metal powder, a preparation method, conductive silver pulp and a use. The mixed metal powder is of a core-shell structure, wherein the core material is a metal hydride, and the shell material is metal silver. The metal elements in the metal hydride include one or more selected from scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, hafnium, beryllium, tungsten, magnesium, yttrium, zirconium, niobium, molybdenum, technetium and cadmium. Compared with pure silver powder, the silver content in the mixed metal powder is much lower, and the production cost is reduced greatly. There is no significant difference between the impedance and adhesion of the conductive silver pulp prepared from the mixed metal powder and those of conductive silver pulp prepared from the traditional silver powder. The need of production practice is basically met.

Description

technical field [0001] The invention relates to the field of metal powder processing, in particular to a mixed metal powder, a preparation method, conductive silver paste and application. Background technique [0002] With the rapid expansion of the touch screen industry, the amount of touch screen silver paste is increasing year by year, and the amount of touch screen silver powder is also increasing. Silver is the metal with the highest conductivity. It has stable chemical properties, excellent thermal conductivity and processing performance. Therefore, silver powder is the basic functional material for conductive paste, conductive adhesive, resistance network, catalytic and antibacterial materials. Silver powder can be divided into micron ultrafine silver powder and nano silver powder (less than 0.1 μm) according to size when the particle size is less than 0.5 μm. Limited to the current production process conditions, ultra-fine silver powder is still the mainstay in the ...

Claims

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Application Information

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IPC IPC(8): H01B1/02H01B13/00B22F1/00B22F1/02B22F9/24
CPCB22F1/0003H01B1/02H01B13/00B22F9/24B22F1/16
Inventor 刘宵
Owner 湖南省国银新材料有限公司
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