Preparation method of micron grade ball shape silver powder for conductive silver paste

A conductive silver paste, micron-scale technology is applied in the field of preparation of conductive silver paste in the electronic industry, which can solve the problems of difficulty in controlling the pH value of the system, increase cost, toxicity, etc., achieve stable and reliable process conditions, improve economic benefits, and process Simple and feasible process
CN1785558AInactive Publication Date: 2006-06-14SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2006-06-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

A process for preparing the micron-class spherical silver powder used for electrically conductive Ag slurry features that in the redox procedure, the silver nitrate solution is dripped into reducer and disperser while the ammonia water is used to regulate the pH value of solution, and the kind of disperser, stirring speed, and reaction temp and time are regulated.
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Description

technical field

[0001] The invention relates to the preparation of metal powder for conductive paste, which is suitable for industrial large-scale production of spherical silver powder, and the obtained spherical high-purity ultrafine silver powder is suitable for the preparation of conductive silver paste in the electronic industry. Background technique

[0002] Metal ultrafine powder itself has superior catalytic properties, magnetic properties, electrical properties, etc., so it has more and more applications in aerospace, atomic energy, electronics, powder metallurgy, chemical and other industries, as well as medicine and bioengineering. Among them, the application field of fine silver powder is very broad, and the application in the fields of electronics and electric power is particularly eye-catching, and it is mainly used in the preparation of conductive paste. Conductive paste is an important raw material in the electronics industry, and conductive coatings and condu...

Claims

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