Title:
SPHERICAL SILVER POWDER AND PREPARATION METHOD THEREFOR, AND CONDUCTIVE PASTE
Document Type and Number:
WIPO Patent Application WO/2023/173627
Kind Code:
A1
Abstract:
A preparation method for spherical silver powder, comprising: performing a reduction reaction: performing a reduction reaction on inorganic silver salt, a reducing agent, an organic silver colloid and a dispersion liquid comprising a dispersing agent; and wrapping silver powder: adding a wrapping agent into the solution subjected to the reduction reaction, so as to obtain spherical silver powder. Also provided is silver powder, wherein the D50 of the silver powder is 0.5-2.0 μm, and the specific surface area of the silver powder is 0.2-1.0 m2/g. Further provided is a conductive paste comprising the silver powder. The silver powder prepared by means of the method is stable in key indexes such as particle size distribution and specific surface area; by adjusting the dosage of organic silver, the key indexes such as particle size distribution and specific surface area of the silver powder can be flexibly adjusted, so that the diversification of a silver powder product is achieved.
Inventors:
XIA XIAOTIAN (CN)
LIAO YUNHONG (CN)
LIAO YUNHONG (CN)
Application Number:
PCT/CN2022/103623
Publication Date:
September 21, 2023
Filing Date:
July 04, 2022
Export Citation:
Assignee:
JIANGSU LINTON MAT CO LTD (CN)
International Classes:
B22F9/24; B22F1/065; B22F1/102; H01B1/02; H01B13/00
Foreign References:
| CN114619039A | 2022-06-14 | |||
| CN110434355A | 2019-11-12 | |||
| CN112475311A | 2021-03-12 | |||
| CN110150316A | 2019-08-23 | |||
| CN108714700A | 2018-10-30 | |||
| CN109128211A | 2019-01-04 | |||
| JP2012077372A | 2012-04-19 |
Attorney, Agent or Firm:
BEIJING TANGSONG IP FIRM (CN)
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