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A kind of preparation method of UV curing pretreatment silver conductive film

A conductive film and pretreatment technology, which is applied in the direction of copying/marking method, printing post-processing, printing, etc., can solve the problems of film surface roughness reduction, low efficiency, cumbersome process, etc., and achieve short curing time and low resistivity and surface roughness, the effect of simple process

Active Publication Date: 2020-08-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above method can reduce the unevenness of the film caused by thermal curing, it usually takes 30 minutes or even more than 1 hour, and if a multi-stage thermal curing method is used, the process is more cumbersome, so the efficiency is low; in addition, due to thermal curing Usually it starts with liquid Ag ink, so the evaporation of the solvent is still relatively violent, and the reduction of the surface roughness of the film is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Wash the glass substrate with a length and width of 1cm×1cm and a thickness of about 0.7mm with isopropanol, tetrahydrofuran, alkaline cleaning solution, deionized water for the first time, deionized water for the second time, and isopropanol. Vibrate with an ultrasonic cleaner for 5-10 minutes in each step, and then put the cleaned substrate into an oven and dry it at 80-85°C. Then adopt nano-silver ink (ANP40LT granular nano-silver ink, solid content is 30%~35%, viscosity is 10~17cPs, surface tension is 35~38dyn / cm, the solvent that adopts is triethylene glycol ethyl ether) on the substrate The inkjet printing graphics are 8mm*8mm square.

[0020] (2) Place the substrate after step (1) inkjet printing preset graphics in a UV curing instrument (full-function protective UV curing system, UV0832, the maximum power density is 175mW / cm 2 , the curing area is 8 inches × 6 inches, the power of the UV lamp is 600W, and the main UV radiation band is the UVA band of 315nm ...

Embodiment 2

[0023] (1) Wash the glass substrate with a length and width of 1cm×1cm and a thickness of about 0.7mm with isopropanol, tetrahydrofuran, alkaline cleaning solution, deionized water for the first time, deionized water for the second time, and isopropanol. Vibrate with an ultrasonic cleaner for 5-10 minutes in each step, and then put the cleaned substrate into an oven and dry it at 80-85°C. Then adopt nano-silver ink (ANP40LT granular nano-silver ink, solid content is 30%~35%, viscosity is 10~17cPs, surface tension is 35~38dyn / cm, the solvent that adopts is triethylene glycol ethyl ether) on the substrate The inkjet printing graphics are 8mm*8mm square.

[0024] (2) Place the substrate after step (1) inkjet printing preset graphics in a UV curing instrument (full-function protective UV curing system, UV0832, the maximum power density is 175mW / cm 2 , the curing area is 8 inches × 6 inches, the power of the UV lamp is 600W, and the main UV radiation band is the UVA band of 315nm ...

Embodiment 3

[0027] (1) Wash the glass substrate with a length and width of 1cm×1cm and a thickness of about 0.7mm with isopropanol, tetrahydrofuran, alkaline cleaning solution, deionized water for the first time, deionized water for the second time, and isopropanol. Vibrate with an ultrasonic cleaner for 5-10 minutes in each step, and then put the cleaned substrate into an oven and dry it at 80-85°C. Then adopt nano-silver ink (ANP40LT granular nano-silver ink, solid content is 30%~35%, viscosity is 10~17cPs, surface tension is 35~38dyn / cm, the solvent that adopts is triethylene glycol ethyl ether) on the substrate The inkjet printing graphics are 8mm*8mm square.

[0028] (2) Place the substrate after step (1) inkjet printing preset graphics in a UV curing instrument (full-function protective UV curing system, UV0832, the maximum power density is 175mW / cm 2 , the curing area is 8 inches × 6 inches, the power of the UV lamp is 600W, and the main UV radiation band is the UVA band of 315nm ...

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Abstract

The invention belongs to the technical field of photoelectric materials, and discloses a preparation method of a silver conductive thin film through UV curing pretreatment. The preparation method includes the steps that a substrate is washed and dried, and a preset figure is subjected to ink-jet printing on the substrate by adopting nano-silver ink; and the substrate after the preset figure is subjected to ink-jet printing is pre-cured for 170-180 seconds under the condition of ultraviolet irradiation, and heat-cured for 3-20 minutes at the temperature of 140 DEG C, and the silver conductive thin film is obtained. According to the preparation method of the silver conductive thin film through UV curing pretreatment, through UV pre-curing and one-time heat curing, and without the need of multi-sectional heat curing, the obtained ink-jet printed silver conductive thin film has low electrical resistivity and surface roughness.

Description

technical field [0001] The invention belongs to the technical field of photoelectric materials, in particular to a method for preparing a UV-cured pretreated silver conductive film. Background technique [0002] Transparent conductive film is widely used in the fields of touch screen, display panel, electromagnetic shielding, LED display, electroluminescent device and thin film solar cell as a kind of functional film with high light transmittance and low sheet resistance. Based on the shortcomings of traditional ITO transparent conductive films such as resource shortage, high price, and prone to defects, those skilled in the art are currently devoting themselves to developing new alternative materials for transparent conductive films. Among them, metal nanomaterials, especially nanosilver materials, have become the most promising alternative materials for commercial use. At present, Ag conductive films can be prepared by inkjet printing and thermal curing, but this method s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M5/00B41M7/00
CPCB41M5/0023B41M5/0047B41M5/007B41M7/0081B41M7/009
Inventor 宁洪龙周艺聪姚日晖陶瑞强陈建秋杨财桂邹建华陶洪徐苗王磊彭俊彪
Owner SOUTH CHINA UNIV OF TECH