Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Silver-containing powder, preparation method of silver-containing powder, conductive silver paste and preparation method of conductive silver paste

A technology of conductive silver paste and silver powder, which is applied in the field of preparation of silver-containing powder, preparation of conductive silver paste and conductive silver paste, and silver-containing powder. It can solve the problem of unstable silver-plated copper powder, easy oxidation of copper elements, and decreased conductivity and other problems, to achieve good electronic conduction benefits, particle size concentration, and reduce the effect of series resistance

Active Publication Date: 2018-10-23
湖南省国银新材料有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silver-coated copper powder can be obtained by this method, but the silver-coated copper powder prepared by this method is unstable, and the copper element is easily oxidized, resulting in a decrease in the conductivity of the overall powder

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Silver-containing powder, preparation method of silver-containing powder, conductive silver paste and preparation method of conductive silver paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The steps of a preparation method of silver-containing powder are:

[0025] (1) First add 30 grams of polyvinylpyrrolidone and 20 grams of oleic acid in 1000 milliliters of deionized water;

[0026] (2) adding successively average particle diameter is 0.2 gram of tellurium oxide of 50 nanometers, and average particle diameter is 0.2 gram of samarium oxide of 100 nanometers, and average particle diameter is 0.2 gram of zinc oxide of 200 nanometers and silver nitrate 85 grams, is heated to 40 afterwards temperature, keep warm for 0.5 hours;

[0027] (3) adding 26.5 grams of sodium carbonate and 62.5 grams of ammoniacal liquor with a mass concentration of 28% was then incubated for 0.5 hour;

[0028] (4) After adding 92 grams of dodecanal, it was incubated for 2 hours to obtain a silver powder suspension;

[0029] (5) the obtained silver powder suspension is cleaned with de-distilled water, and the pH value of the washing solution reaches about 7;

[0030] (6) Remove pa...

Embodiment 2

[0033] The steps of a preparation method of silver-containing powder are:

[0034] (1) First add 30 grams of oleic acid and 20 grams of stearic acid in 1000 milliliters of deionized water;

[0035](2) add successively again average particle diameter is 0.2 gram of tellurium oxide of 50 nanometers, and average particle diameter is 0.2 gram of samarium oxide of 100 nanometers, and average particle diameter is 0.2 gram of bismuth oxide of 200 nanometers and silver nitrate 85 grams, is heated to after 40 degrees, keep warm for 0.5 hours;

[0036] (3) adding 26.5 grams of sodium carbonate and 62.5 grams of ammoniacal liquor with a mass concentration of 28% was then incubated for 0.5 hour;

[0037] (4) After adding 25 grams of glutaraldehyde at last, it was incubated for 2 hours to obtain a silver powder suspension;

[0038] (5) the obtained silver powder suspension is cleaned with de-distilled water, and the pH value of the washing solution reaches about 7;

[0039] (6) Remove p...

Embodiment 3

[0042] The steps of a preparation method of silver-containing powder are:

[0043] (1) First add 30 grams of polyvinylpyrrolidone and 20 grams of polyurethane in 1000 milliliters of deionized water;

[0044] (2) adding successively an average particle diameter is 0.01 gram of tellurium oxide of 50 nanometers, an average particle diameter is 0.01 gram of lanthanum oxide of 100 nanometers, an average particle diameter is 0.01 gram of bismuth oxide of 200 nanometers and 85 grams of silver nitrate, and is heated to 40 degrees, keep warm for 0.5 hours;

[0045] (3) then adding mass concentration is 70 grams of ammoniacal liquor of 28%, insulation 0.5 hour;

[0046] (4) After adding 128 grams of ascorbic acid at last, it was incubated for 2 hours to obtain a silver powder suspension;

[0047] (5) the obtained silver powder suspension is cleaned with de-distilled water, and the pH value of the washing solution reaches about 7;

[0048] (6) Remove part of the moisture from the silv...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of metal powder processing, specifically a silver-containing powder, a preparation method, front silver paste and a preparation method. The silver-containing powder has a core-shell structure, with nano oxide as the core material, and metal Silver is the shell material, and the nano-oxide is one or more of the main group metal oxides, metalloid oxides, and lanthanide metal oxides. The silver-containing powder prepared by the present invention has both pure silver components and Good electrical conductivity, and there will be no problem of decreased conductivity of silver-coated copper powder, and the conductive silver paste prepared with the silver-containing powder in this patent forms a unique alloy layer due to the presence of nano-oxides during high-temperature sintering , so that the electrical performance efficiency of the conductive silver paste can be significantly improved, and the anti-aging performance and adhesion performance of the conductive silver paste are more superior.

Description

technical field [0001] The invention relates to the field of metal powder processing, in particular to a silver-containing powder, a preparation method of the silver-containing powder, a conductive silver paste and a preparation method of the conductive silver paste. Background technique [0002] Silver is a precious metal series, expensive, but silver is the metal with the highest conductivity, its chemical properties are stable, it has excellent thermal conductivity and processing performance, so silver powder is the basis of conductive paste, conductive adhesive, resistance network, catalytic and antibacterial materials Functional Materials. Silver powder can be divided into micron-scale ultrafine silver powder and nano silver powder according to the size when the particle size is less than 0.5 μm. However, due to the current production process conditions, ultrafine silver powder is still the mainstay in the field of electronic paste and other industries. There are many ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products