Touch screen silver paste and preparation method thereof

A technology of touch screen and manufacturing method, which is applied in the direction of cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, electrical components, etc., and can solve problems such as easy generation of air bubbles, poor conductivity of slurry, and poor adhesion. Achieve the effect of reducing silver content, saving cost, improving adhesion and conductivity

Inactive Publication Date: 2016-01-27
TIANJIN ZHONGKE PHYSICAL & CHEM NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to save costs, the silver content of domestic silver paste is generally about 60%. Due to the reduction of silver content, the conductivity of the paste is poor, the adhesion is not good, and the printing process is prone to bubbles and other phenomena, which will lead to touch screen products after printing. Poor electrical and mechanical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A touch screen silver paste, the components and weight of the silver paste are: flake silver powder: 55Kg; solvent: 25Kg; polymer resin: 17Kg; additive: 3Kg.

[0026] A kind of preparation method of touch screen silver paste, the steps of its preparation method are:

[0027] (1) First, the solvent and the polymer resin are mixed at high speed under certain conditions according to the ratio to a uniform state to form an organic vehicle;

[0028] (2) Secondly, the conductive silver powder is mixed evenly with the carrier;

[0029] (3) Then add a certain proportion of additives, after being stirred by a mixer and ground by a three-roll machine, the final conductive paste is obtained;

[0030] (4) The total amount of the conductive silver powder, solvent, polymer resin and additive is 100%.

Embodiment 2

[0032] A touch screen silver paste, the components and weight of the silver paste are: flake silver powder: 65Kg; solvent: 25Kg; polymer resin: 8Kg; additives: 2Kg. Preparation method is with embodiment 1.

Embodiment 3

[0034] A touch screen silver paste, the components and weight of the silver paste are: flake silver powder: 60Kg; solvent: 20Kg; polymer resin: 17Kg; additive: 3Kg. Preparation method is the same as embodiment 1

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PUM

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Abstract

The invention relates to a touch screen silver paste which comprises components in weight of 55%-65% of silver flake, 20%-45% of solvent, 8%-20% of high molecular resin and 1%-3% of additive. According to the touch screen silver paste and a preparation method thereof, the silver content is still about 60%, both the adhesive force and the electrical conductivity can be improved, the electrical conductivity of foreign silver pastes is basically realized, that is the silver content is reduced under the condition that the electrical conductivity and the adhesive force are not affected, and accordingly, the cost is saved.

Description

technical field [0001] The invention belongs to the field of conductive silver paste, in particular to a touch screen silver paste and a preparation method thereof. Background technique [0002] The current conductive paste applied to the touch screen usually adopts conductive silver paste, wherein the silver powder is flake powder. In order to ensure the conductivity, the silver content of foreign silver paste is generally more than 70%, and the cost is high due to the high silver content. In order to save costs, the silver content of domestic silver paste is generally about 60%. Due to the reduction of silver content, the conductivity of the paste is poor, the adhesion is not good, and the printing process is prone to bubbles and other phenomena, which will lead to touch screen products after printing. Both electrical and mechanical properties are poor. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01B13/00
Inventor 汪洋刘锋张玉姣
Owner TIANJIN ZHONGKE PHYSICAL & CHEM NEW MATERIAL TECH CO LTD
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