Polypyrrole(PPy)has been widely concerned because of its advantages such as simple preparation,low cost,high electrical conductivity,and environmental protection.In this study,PPy based conductive ink was prepared by in-situ polymerization using PPy and CB as conductive paste.The viscosity,adhesion,and electrical conductivity of the ink were studied by adjusting the content of the resin binder,the ratio of conductive slurry and sintering temperature,and other factors.The research showed that the prepared PPy based conductive ink has good dispersion uniformity,adhesion,and conductivity,and meets the performance requirements of screen printing ink.The ratio of conductive paste affects the line resistance and surface resistance of printed products.The surface resistance of printed products decreases first and then increases with the increase of sintering temperature,and the resistance value is the minimum at 100℃.At the same time,PPy based conductive ink has excellent printability on a variety of substrates.These results show that PPy based conductive ink has great application prospects in flexible conductive circuits,sensing materials,and electrostatic shielding.
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