Abstract
Development and innovation researches of conductive ink have practical significance because conductive ink is a key material for printed electronic technology. To solve the poor adhesion problem of pure nano-silver ink on a paper substrate, paper-based resin nano-silver conductive ink for inkjet printing was produced by adding acrylic resin and photo-initiator into silver nano-colloids. The electrical conductivity and mechanical properties of the conductive ink layer were analyzed and discussed. Firstly, a certain proportion of the nano-silver and photo-curable acrylic resin were dispersed in an organic solvent, and a small amount of additives were added to obtain conductive ink suitable for inkjet printing. Then, different sintering conditions of pure nano-silver ink were analyzed to discuss the effects of sintering temperature on the nano-silver resistivity, and conductive property of resin nano-silver ink was discussed. Finally, the mechanical stability of pure nano-silver ink and resin nano-silver ink was compared. The results showed that the conductive ink containing 20 % of the nano-silver obtained the conductivity of 2.72 × 105 S/m when sintered at 170 °C for 2 min, while the conductive ink containing resin obtained the conductivity of 3.3 × 104 S/m. The addition of acrylic resin has a positive effect on improving the mechanical stability, especially in the vertical direction of the resistance force.
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