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Preparation method of high-adhesive-force conductive silver powder used for conductive silver paste

A technology of strong adhesion, conductive silver paste, applied in cable/conductor manufacturing, circuits, electrical components, etc., can solve the problems of reduced stability of conductive silver paste, poor conductivity of silver paste, rough surface of lines, etc. Stability and conductivity, fine line surface, low cost of raw materials

Inactive Publication Date: 2016-11-16
赛浪车联汽车科技(北京)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention: the silver powder currently sold in the market is generally flake silver powder, which has the disadvantages of high photocuring energy, rough surface of lines, large filling amount and high resistance, which will cause the stability of conductive silver paste to decrease , the conductivity of the silver paste will deteriorate, and the current situation of the resistance value will increase, providing a method for preparing conductive silver powder with strong adhesion for conductive silver paste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Firstly, according to the mass ratio of 1:5, stir and mix the wine-making grape marc with 10% sulfuric acid, extract at 35°C for 2 hours, then filter and collect the filtrate, and weigh 10 parts of hydrogen in parts by weight Sodium oxide, 20 parts of calcium carbonate and 45 parts of filtrate were stirred and mixed, allowed to settle for 1 hour, filtered to collect the filter cake, and dried at 65°C for 3 hours to prepare dry calcium tartrate; finally, according to the mass ratio of 1:8, dry calcium tartrate Stir and mix with deionized water and place in a beaker, then ultrasonically oscillate at 200W for 10 minutes, then add sulfuric acid with a mass concentration of 98% to the beaker dropwise, wait until no precipitation occurs, let stand for 1 hour, filter and collect the filtrate , rotary evaporated to dryness at 65°C, and collected dry crystals; then weighed 45 parts of deionized water, 10 parts of polyethylene glycol, 3 parts of cetyltrimethylammonium bromide, and...

example 2

[0022]First, according to the mass ratio of 1:5, stir and mix the wine-making grape pomace with 10% sulfuric acid, extract at 38°C for 2.5 hours, then filter and collect the filtrate, and weigh 13 parts by weight Sodium hydroxide, 23 parts of calcium carbonate and 48 parts of filtrate were stirred and mixed, allowed to settle for 1.5 hours, filtered and collected the filter cake, and dried at 70°C for 4 hours to prepare dry calcium tartrate; finally, according to the mass ratio of 1:8, dry Calcium tartrate and deionized water were stirred and mixed and placed in a beaker, then ultrasonically oscillated at 250W for 13 minutes, and then sulfuric acid with a mass concentration of 98% was added dropwise to the beaker. And collect the filtrate, rotary evaporate to dryness at 75°C, collect dry crystals; then weigh 48 parts of deionized water, 13 parts of polyethylene glycol, 4 parts of hexadecyl trimethyl bromide in parts by weight Ammonium chloride, 7 parts of tea polyphenols and 1...

example 3

[0025] Firstly, according to the mass ratio of 1:5, stir and mix the wine-making grape marc with 10% sulfuric acid, extract at 40°C for 3 hours, then filter and collect the filtrate, and weigh 15 parts of hydrogen in parts by weight. Sodium oxide, 25 parts of calcium carbonate and 50 parts of filtrate were stirred and mixed, allowed to settle for 2 hours, filtered to collect the filter cake, and dried at 80°C for 5 hours to prepare dry calcium tartrate; finally, according to the mass ratio of 1:8, dry calcium tartrate Stir and mix with deionized water and place in a beaker, then ultrasonically oscillate at 300W for 15 minutes, then add sulfuric acid with a mass concentration of 98% to the beaker dropwise, wait until no precipitation occurs, let stand for 2 hours, filter and collect the filtrate , rotary evaporated to dryness at 80°C, and collected dry crystals; then weighed 50 parts of deionized water, 15 parts of polyethylene glycol, 5 parts of cetyltrimethylammonium bromide, ...

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PUM

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Abstract

The invention discloses a preparation method of high-adhesive-force conductive silver powder used for conductive silver paste and belongs to the technical field of conductive silver powder preparation. The preparation method comprises the steps that grape residues after brewing serve as raw materials, and dried calcium tartrate is prepared; the dried calcium tartrate is added with deionized water and sulfuric acid and is filtered, filtrate is subjected to rotary evaporation, and dried crystals are obtained; the dried crystals are mixed with the deionized water, polyethylene glycol, hexadecyl trimethyl ammonium bromide and tea polyphenol and subjected to water-bath heating; after heating is finished, then silver nitrate is added into the dried crystals, centrifugal separation is conducted, and precipitates are washed through absolute ethyl alcohol and the deionized water; and after drying, cooling and grinding are conducted, the high-adhesive-force conductive silver powder used for the conductive silver paste can be obtained. Examples prove that the preparation method is simple in process, low in equipment investment and relatively low in raw material cost; and the prepared powder-like silver powder has the characteristics of being low in photocuring energy, exquisite in line surface and small in filling quantity and resistance, so that the stability and the conductivity of the conductive silver paste are greatly improved, and the conductive silver paste is suitable for industrial large-scale production.

Description

technical field [0001] The invention discloses a method for preparing conductive silver powder with strong adhesion for conductive silver paste, and belongs to the technical field of conductive silver powder preparation. Background technique [0002] Solar energy is an inexhaustible renewable energy source for human beings. It is also a clean energy source and does not produce any environmental pollution. Among the effective utilization of solar energy; solar photovoltaic utilization is the fastest growing and most dynamic research field in recent years, and it is one of the most watched projects. Large-scale development and utilization of photovoltaic solar power generation, improving the photoelectric conversion efficiency of batteries and reducing production costs are the core. Due to the further deepening of people's theoretical understanding of solar batteries, the improvement of production processes, the infiltration of IC technology and new batteries in the past ten y...

Claims

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Application Information

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IPC IPC(8): B22F9/24H01B13/00
CPCB22F9/24H01B13/00
Inventor 郭迎庆张明高玉刚
Owner 赛浪车联汽车科技(北京)股份有限公司
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