A kind of inkjet nano silver conductive ink and preparation method thereof

A technology of conductive ink and nano-silver, which is applied in ink, household utensils, applications, etc., can solve the problems affecting the application of water-based inkjet nano-silver conductive ink, poor adhesion of water-based inkjet nano-silver conductive ink, etc., and achieve good conductivity , Surface tension reduction, anti-freezing effect

Active Publication Date: 2022-07-12
承德天成印刷科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PET, PEN, PI, and PEI substrates are generally hydrophobic, and the adhesion of water-based inkjet nano-silver conductive inks on the surface of such substrates is generally poor, which affects the application of water-based inkjet nano-silver conductive inks

Method used

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  • A kind of inkjet nano silver conductive ink and preparation method thereof
  • A kind of inkjet nano silver conductive ink and preparation method thereof

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preparation example Construction

[0043] The preparation method of the inkjet printing nano-silver conductive ink of the present invention mainly includes two steps: firstly, preparing nano-silver powder, adding an auxiliary agent to the inorganic silver salt solution, stirring and then adding a reducing agent to obtain nano-silver particles, and then washing Then the nano silver paste is obtained, and the nano silver powder is obtained after drying at low temperature; the second is to prepare a mixed solution of various auxiliary agents and co-solvents, then add the nano silver powder, and stir evenly to obtain the inkjet nano silver conductive ink. The preparation process is simple, the nano-silver conductive ink has good dispersibility, excellent stability, suitable rheological properties, can achieve smooth ink jetting, and has good electrical conductivity and adhesion.

[0044] An inkjet printing nano-silver conductive ink and a preparation method thereof provided by the present invention comprise the foll...

Embodiment 1

[0077] The inkjet nano silver conductive ink provided by the present invention is prepared according to the following parts by weight: 17 parts of nano silver, 69.6 parts of deionized water, 0.1 part of cosolvent, 0.6 part of wetting and dispersing agent, 2.0 parts of binder, 0.5 part of foaming agent, 3.0 part of moisturizing agent, 0.3 part of leveling agent, 0.4 part of anti-settling agent, and 0.5 part of viscosity modifier.

[0078] S1. The preparation method of nano-silver powder is as follows: prepare 0.4mol·L at room temperature -1 200mL of silver nitrate deionized aqueous solution, stirred for 5 minutes; then added polyvinylpyrrolidone, 0.2mol / l sodium polyacrylate dispersant 0.6mL, 1 part of auxiliary dispersant diethanolamine, 1.5ml, and stirred for 15 minutes to obtain silver nitrate- Dispersant mixed solution, the solution was heated to 50 ℃; prepare 2mol·L -1 30mL of sodium borohydride deionized aqueous solution; at 1500rpm min -1 Under the stirring speed, the ...

Embodiment 2

[0087] A water-based inkjet nano-silver conductive ink, prepared according to the following parts by weight: 20 parts of nano-silver, 70 parts of deionized water, 0.12 parts of cosolvent, 0.7 parts of wetting and dispersing agent, 2.2 parts of binder, and 0.55 parts of defoamer 5.0 parts of moisturizing agent, 0.4 part of leveling agent, 0.6 part of anti-settling agent, and 0.45 part of viscosity modifier.

[0088] S1. The preparation method of nano-silver powder is as follows: prepare 0.4mol·L at room temperature -1 400mL of silver nitrate deionized aqueous solution, stirred for 5 minutes; then add cetyltrimethylammonium bromide activator, 0.6mL of hydroxymethyl cellulose of 0.2mol / l, 2 parts of auxiliary dispersant diethanolamine, 3ml, Stir for 15 minutes to obtain a mixed solution of silver nitrate and dispersant, and heat the solution to 50 °C; prepare 2 mol·L -1 30mL of sodium borohydride deionized aqueous solution; at 1500rpm min -1 Under the stirring speed, the sodium...

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Abstract

The invention provides an inkjet nano-silver conductive ink and a preparation method thereof, comprising the following components: 12-30 parts of nano-silver, 55-80 parts of deionized water, 0.02-2 parts of cosolvent, and 0.1-2 parts of wetting and dispersing agent 1.0 part, binder 0.4-3.0 part, defoamer 0.2-0.6 part, humectant 3.0-10.0 part, leveling agent 0.01-0.5 part, anti-settling agent 0.3-1.5 part, viscosity modifier 0.5-0.6 part. The preparation method of conductive ink includes two steps: preparation of nano-silver powder and preparation of nano-silver conductive ink. The conductive ink in the present invention protects the silver from being oxidized during storage by adding a certain co-dispersant, and at the same time improves the stability of the nano-silver particles in water by adjusting the pH value of the system; Inhibits the ink solvent volatilization too fast and causes the nozzle to block, has good conductivity, adhesion and printing adaptability.

Description

technical field [0001] The invention belongs to the technical field of printed electronic paste, and particularly relates to an aqueous inkjet conductive ink and a preparation method thereof. Background technique [0002] With the development of information technology, researchers have prepared functional inks by replacing pigments in traditional inks with functional materials, and successfully applied this technology to the preparation of electronic products, pioneering electronic inkjet printing. this new field. Therefore, inkjet printing technology for directly fabricating circuits on substrates has received extensive attention. The traditional printed circuit industry uses photolithography, which involves processes such as etching, metal deposition, and electroplating, and is accompanied by a large amount of toxic chemical waste. produce. Nano metal inkjet printing technology only requires two steps of printing and coating post-processing when producing electronic prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/52C09D11/38
CPCC09D11/38C09D11/52
Inventor 关荣锋段小汇李皓池宪虎单潇月
Owner 承德天成印刷科技股份有限公司
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