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Alkaline modified paint and process for preparing silver patterns on surfaces of polyimide films

A technology of polyimide film and alkali modification, which is applied in the direction of metal material coating process, coating, liquid chemical plating, etc., which can solve the problems of difficult-to-adhesive materials, difficult to guarantee binding force, and poor conductivity of silver conductive lines. Good and other problems, to achieve the effect of good conductivity, good binding force, and easy mass production

Inactive Publication Date: 2015-04-29
广东致卓环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether it is the conductive silver paste method or the silver ink method, both methods belong to the maskless printing method, but both methods have some unavoidable shortcomings: First, the conductive circuit must be formed after a high-temperature sintering process in the later stage , which results in a large energy consumption in production
Second, due to the addition of a lot of polymer binders or dispersants in the slurry or ink, the conductivity of the final silver conductive circuit is not very good, which is far from that of pure silver.
Third, since the two methods are directly printed on the surface of the flexible insulating film, the flexible insulating film, especially the polyimide film, is relatively non-polar, which is a difficult-to-adhesive material, and it is difficult to guarantee the binding force with silver.

Method used

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  • Alkaline modified paint and process for preparing silver patterns on surfaces of polyimide films

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The test process of this embodiment 1 is as follows:

[0027] One, the preparation is used for the alkali-modified coating of polyimide film surface preparation silver pattern, and concrete preparation method is as follows:

[0028] A, take by weight the potassium hydroxide of 30 parts, the xanthan gum of 1 part, the dodecylsulfopropyl betaine of 1 part, the deionized water of 68 parts;

[0029] b. Put 30 parts of potassium hydroxide into 68 parts of deionized water and stir to dissolve. At this time, pay attention to the outside of the container and use 25°C cold water to cool down;

[0030] c. Add 1 part of dodecyl sulfopropyl betaine to the above solution and stir until dissolved;

[0031] d. Add 1 part of xanthan gum to the above solution and stir until dissolved;

[0032] Two, carry out the technology that the alkali-modified coating that is used for polyimide film surface preparation silver pattern that step one is synthesized carries out silver pattern preparat...

Embodiment 2

[0040] The test process of present embodiment 2 is as follows:

[0041] One, the preparation is used for the alkali-modified coating of polyimide film surface preparation silver pattern, and concrete preparation method is as follows:

[0042] a, take by weight the sodium hydroxide of 40 parts, the sodium polyacrylate (average molecular weight 400-500 ten thousand) of 0.5 part, the tetradecyl sulfopropyl betaine of 1.5 parts, the deionized water of 58 parts ;

[0043] b. Put 40 parts of sodium hydroxide into 58 parts of deionized water and stir to dissolve. At this time, pay attention to the outside of the container and use 10 ℃ cold water to cool down;

[0044] c. Add 1.5 parts of tetradecyl sulfopropyl betaine to the above solution and stir until dissolved;

[0045] d. Add 0.5 parts of sodium polyacrylate (average molecular weight 4-5 million) to the above solution, and stir until dissolved;

[0046] Two, carry out the technology that the alkali-modified coating that is us...

Embodiment 3

[0054] The test process of present embodiment 3 is as follows:

[0055] One, the preparation is used for the alkali-modified coating of polyimide film surface preparation silver pattern, and concrete preparation method is as follows:

[0056] A, take by weight the potassium hydroxide of 50 parts, the xanthan gum of 2 parts, the cetyl sulfopropyl betaine of 1 part, the deionized water of 47 parts;

[0057] b. Put 50 parts of potassium hydroxide into 47 parts of deionized water and stir to dissolve. At this time, pay attention to the outside of the container and use 20 ℃ cold water to cool down;

[0058] c. Add 1 part of cetyl sulfopropyl betaine to the above solution and stir until dissolved;

[0059] d. Add 2 parts of xanthan gum to the above solution and stir until dissolved;

[0060] Two, carry out the technology that the alkali-modified coating that is used for polyimide film surface preparation silver pattern that step 1 is synthesized carries out silver pattern preparatio...

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Abstract

The invention discloses an alkaline modified paint and process for preparing silver patterns on surfaces of polyimide films. The alkaline modified paint is characterized by comprising the following components in parts by weight: 10-60 parts of strong base, 0.1-5 parts of a viscosity regulating agent, 0.1-5 parts of a surface tension regulating agent, and 30-90 parts of deionized water. The alkaline modified paint disclosed by the invention can solve the technical problems that in the existing preparation process of silver patterns, high-temperature sintering is needed in the later period, the electrical conductivity is not good enough, and the binding force is not good enough. Combined with the corresponding process method, the alkaline modified paint disclosed by the invention can be widely used in the technical field of printed electronics.

Description

technical field [0001] The invention relates to the technical field of printed electronics, in particular to an alkali-modified coating and a process method for preparing silver patterns on the surface of a polyimide film. Background technique [0002] Polyimide film has many excellent properties such as high temperature resistance, high chemical stability, and low dielectric constant. It has become one of the most important substrates in the field of flexible printed electronics. [0003] Traditional silver pattern preparation methods include conductive silver paste method and silver ink method. Whether it is the conductive silver paste method or the silver ink method, both methods belong to the maskless printing method, but both methods have some unavoidable shortcomings: First, the conductive circuit must be formed after a high-temperature sintering process in the later stage , which results in large energy consumption in production. The second is that due to the additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/44C23C18/20
CPCC23C18/2046C23C18/44
Inventor 谢金平王艳青吴耀程李宁刘松王群
Owner 广东致卓环保科技有限公司