Printed low-temperature curing conductive silver paste for capacitive touch screen and preparation method of printed low-temperature curing conductive silver paste

The invention provides a printed low-temperature curing conductive silver paste for a capacitive touch screen and a preparation method of the printed low-temperature curing conductive silver paste. The printed conductive silver paste of the capacitive touch screen, provided by the invention, comprises silver powder, a macromolecule binding agent, a solvent and an additive, wherein the constituents of the printed conductive silver paste are as follows based on percent by weight: 50-82% of silver powder, 5-15% of macromolecule binding agent, 2-5% of curing agent, 10-25% of solvent and 1-5% of additive. The preparation method comprises the following steps of 1) selecting materials according to the weight percent of the formula; 2) weighing the macromolecule binding agent according to the formula; 3) adding a low-temperature delocking latent curing agent and the additive; 4) weighing the silver powder on an organic carrier according to the formula, and uniformly stirring the mixture by a high-speed dispersing age