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Method for preparing flaky silver powder through alkaline medium

A technology of flake silver powder and alkaline medium, which is applied in metal processing equipment, coating, transportation and packaging, etc., to achieve the effect of simple purification process, improved sedimentation stability and prevention of agglomeration

Inactive Publication Date: 2018-09-07
NANJING FORESTRY UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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So far, this method has not been reported in the literature

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  • Method for preparing flaky silver powder through alkaline medium
  • Method for preparing flaky silver powder through alkaline medium
  • Method for preparing flaky silver powder through alkaline medium

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Embodiment Construction

[0044] The present invention will be further described in detail below in conjunction with examples. It should be noted that the following is a non-limiting example of the preparation method of flake silver powder in an alkaline medium according to the present invention, and these examples are provided only for the purpose of further describing the present invention in detail , not to limit the present invention in any form and in essence; it must be pointed out that for those skilled in the art, without departing from the method of the present invention, those skilled in the art can also make some improvements, supplements and optimizations , these improvements, supplements and optimizations should also be regarded as the scope of protection of the present invention; all those skilled in the art, without departing from the scope of the method of the present invention, use the technical solutions and technical content of the present invention to carry out process improvement, s...

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Abstract

The invention provides a method for preparing flaky silver powder. The method is characterized in that water, silver salt, a complexing agent, a silver plating brightening agent, a dispersing agent, alkali, a flaky alkaline compound crystal and a reducing agent are taken as raw materials, silver plating is carried out on the surface of the flaky alkaline compound crystal by adopting a chemical plating method until silver ions react completely, and after the reaction is finished, the flaky silver powder is directly obtained through a separation and purification treatment and a processing treatment without ball milling. The technical scheme of the method has the advantages that the energy consumption is low, environmental pollution is low, the production process is simple, the process routeis short, the investment to the large-scale production equipment is low, the production efficiency is high, the production cost is low, and the dispersion performance and the conductivity of the products are good; and the method is suitable for large-scale production and capable of solving the problems exist in the ball milling process when the ball milling process is used for preparing the flakysilver powder, and has good industrialization prospect.

Description

technical field [0001] The invention relates to a preparation method of flaky silver powder in an alkaline medium, belonging to the technical field of preparation of metal powder materials. Background technique [0002] Metal powders are divided into four types according to particle shape: spherical, random particle, flake and wire. Different from spherical metal powder and granular metal powder, flake metal powder has excellent catalytic performance, excellent sintering performance, excellent thixotropic performance, excellent adhesion, good shielding effect, excellent electromagnetic wave reflection ability and excellent Excellent electrical conductivity makes it widely used in chemical catalysis, powder metallurgy, conductive coatings, conductive adhesives, conductive inks and conductive pastes. [0003] At present, spherical metal powders or granular metal powders are mostly used in the fields of chemical catalysis, electromagnetic shielding coatings, radar wave reflect...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/02
CPCB22F9/24B22F1/068B22F1/17
Inventor 刘福生
Owner NANJING FORESTRY UNIV
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