Preparation method for low-temperature-cured electrode slurry

A technology of electrode paste and low temperature, applied in the direction of conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problems of poor printing performance, poor high temperature resistance, uneven film layer, etc., to achieve needle-free pores, Short curing time and good adhesion

Active Publication Date: 2016-08-31
DONGGUAN COREHELM ELECTRONICS MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the printing performance of the current silver electrode paste is not very good, and the finished product has a high viscosity, which is very easy to cause uneven film layer, poor high temperature resistance, low adhesion, and easy to fall off

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method for low-temperature curing electrode slurry, comprising the following steps:

[0028] (1) Mix 75% organic solvent, 13.5% polyimide powder, 10% hydrogenated rosin resin and 1.5% dispersant evenly, then disperse with a disperser in a water bath at 60°C for 2 hours to obtain a homogeneous mixture A;

[0029] (2) Mix 1.5% leveling agent, 1.5% thixotropic agent, 1% defoamer and 96% homogeneous mixture A prepared in step (1) and disperse in a water bath at 60°C for 1 hour with a disperser, Obtain an organic vehicle, add a thickener or an organic solvent to adjust the viscosity of the organic vehicle to 80dPa·s;

[0030] (3) Mix and stir 10% of the organic carrier prepared in step (2) and 90% high-purity flake silver powder evenly, and then grind them in a three-roll mill until the fineness of the slurry is less than 15 μm. Add a thickener or organic The solvent adjusts the viscosity of the slurry to 500dPa·s to obtain a low-temperature cured electrode sl...

Embodiment 2

[0032] A preparation method for low-temperature curing electrode slurry, comprising the following steps:

[0033] (1) Mix 65% organic solvent, 25% polyimide powder, 9% hydrogenated rosin resin and 1% dispersant evenly, and then disperse with a disperser in a water bath at 80°C for 5 hours to obtain a uniform mixed solution A;

[0034] (2) Mix 1% leveling agent, 0.5% thixotropic agent, 0.5% defoamer and 98% homogeneous mixture A prepared in step (1) and disperse it in a water bath at 80°C for 3 hours with a disperser, To obtain an organic vehicle, add a thickener or an organic solvent to adjust the viscosity of the organic vehicle to 150dPa·s;

[0035] (3) Mix and stir 30% of the organic vehicle prepared in step (2) and 70% of high-purity flake silver powder evenly and then grind them in a three-roll mill until the fineness of the slurry is less than 15 μm. Add a thickener or organic The solvent adjusts the viscosity of the slurry to 800dPa·s to obtain a low-temperature cured ...

Embodiment 3

[0037] A preparation method for low-temperature curing electrode slurry, comprising the following steps:

[0038] (1) Mix 70% organic solvent, 20% polyimide powder, 8.8% hydrogenated rosin resin and 1.2% dispersant evenly, then disperse with a disperser in a water bath at 65°C for 3 hours to obtain a uniform mixed solution A;

[0039] (2) Mix 1% leveling agent, 1.5% thixotropic agent, 1% defoamer and 96.5% homogeneous mixture A prepared in step (1) and disperse it in a water bath at 65°C for 1.5h with a disperser , to obtain an organic vehicle, adding a thickener or an organic solvent to adjust the viscosity of the organic vehicle to 100dPa·s;

[0040] (3) Mix and stir 15% of the organic carrier prepared in step (2) and 85% high-purity flake silver powder evenly, and then grind them in a three-roll mill until the fineness of the slurry is less than 15 μm. Add a thickener or organic The solvent adjusts the viscosity of the slurry to 600dPa·s to obtain a low-temperature cured e...

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Abstract

The invention discloses a preparation method for low-temperature-cured electrode slurry. The preparation method comprises the following steps of firstly mixing an organic solvent, polyimide powder, hydrogenated rosin resin and a dispersing agent in a water bath to be dispersed for 2-5h by a dispersion machine to obtain a uniform mixed solution A; then mixing the uniform mixed solution A, and a flatting agent, a thixotropic agent and a defoaming agent to be dispersed for 1-3h to obtain an organic carrier; and finally, mixing the organic carrier and sheet-shaped silver powder, and grinding the mixture to obtain the low-temperature-cured electrode slurry. The electrode slurry prepared by the method is short in curing time, excellent in high temperature resistance after the slurry is cured, relatively low in sheet resistance, high in adhesive force, excellent in weldability, free of cracks and needle vent holes, simple in preparation method, and low in cost.

Description

Technical field: [0001] The invention relates to the field of electrode slurry preparation, in particular to a method for preparing low-temperature solidified electrode slurry. Background technique: [0002] Electrode paste is an important part of electronic information materials, and electronic information materials are the foundation and precursor of electronic information technology. With the development of electronic information technology, new and higher requirements must be put forward for electrode paste, which is an important part of electronic information materials. [0003] In the existing electrode paste field, silver electrode paste has the advantages of high conductivity, stable performance, and strong bonding strength with the substrate, and is widely used in the production of electronic components such as integrated circuits, multi-chip components, and membrane switches. However, the printing performance of the current silver electrode paste is not very good,...

Claims

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Application Information

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IPC IPC(8): H01B1/20
CPCH01B1/20
Inventor 张念柏苏冠贤
Owner DONGGUAN COREHELM ELECTRONICS MATERIAL TECH CO LTD
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