▎ 摘　　要

NOVELTY - Preparing a self-driven impact sensor device printed by uniform droplet jetting, involves mixing polydimethylsiloxane PDMS and curing agent in a mass ratio of 10: 1 to obtain mixed solution A, adding polytetrafluoroethylene PTFE to mixed solution A to obtain mixed solution B, adding powdered sodium chloride (NaCl) to mixed solution B to obtain mixed solution C, stirring and mixing uniformly to obtain PTFE/ PDMS/NaCl mixture, using a spin coater to spin-coat the PTFE/PDMS/NaCl mixture on the polyimide PI container, and pre-curing at 70°C for 3-5 minutes to increase the viscosity of the mixture. The graphene forked conductive electrodes is printed and placed the spin-coated PTFE/PDMS/NaCl mixed container pre-cured on the printing platform. The spraying device prepared conductive graphene with interdigitated electrode pattern as the conductive electrode according to the pattern of the interdigitated electrode and the requirements of the spraying process. USE - Method for preparing a self-driven impact sensor device printed by uniform droplet jetting. ADVANTAGE - The method enables to prepare uniform droplet jet printing self-driven impact sensor that has good conductivity, and can directly measure the external impact excitation by observing the voltage signal of the sensor, and improves the viscosity of the mixed solution. DETAILED DESCRIPTION - Preparing a self-driven impact sensor device printed by uniform droplet jetting, involves mixing polydimethylsiloxane PDMS and curing agent in a mass ratio of 10: 1 to obtain mixed solution A, adding polytetrafluoroethylene PTFE to mixed solution A to obtain mixed solution B, adding powdered sodium chloride (NaCl) to mixed solution B to obtain mixed solution C, stirring and mixing uniformly to obtain PTFE/ PDMS/NaCl mixture, using a spin coater to spin-coat the PTFE/PDMS/NaCl mixture on the polyimide PI container, and pre-curing at 70℃ for 3-5 minutes to increase the viscosity of the mixture. The graphene forked conductive electrodes is printed and placed the spin-coated PTFE/PDMS/NaCl mixed container pre-cured on the printing platform. The spraying device prepared conductive graphene with interdigitated electrode pattern as the conductive electrode according to the pattern of the interdigitated electrode and the requirements of the spraying process. The conductive graphene is wrapped by its own gravity and viscous PTFE/PDMS/NaCl mixture, and finally sinks and embeds inside the PTFE/PDMS/NaCl mixture to obtain the initial state of the sensor. The initial state of the sensor is put in a vacuum drying oven, adjust the temperature to 170-220℃, and fully cured for 60 minutes. The fully cured sensor device is placed in clear water, slowly bend and stretched it, so that the sodium chloride (NaCl) in polytetrafluoroethylene (PTFE) /polydimethylsiloxane (PDMS)/NaCl flexible substrate of the sensor device dissolves in water and produces tiny holes, and then fully volatilized and released the surface insulating substance in the conductive electrode to obtain PTFE/PDMS-graphene electrode generator sensor device, that is self-driven shock sensor device. An INDEPENDENT CLAIM is included for an application of the uniform droplet jet printing self-driven shock sensor device, which involves: connecting the two ends of the PTFE/PDMS-graphene electrode generator sensor device with wires A and B, the other end of wire A is connected to the voltage detection instrument, and grinding other end of wire B; using nano-tape to fully adhere the PTFE/PDMS-graphene electrode generator sensor device to the surface of the object to be measured, applying a shock excitation with a fixed frequency and peak load, affected by the friction/static induction between the conductive electrode and the PTFE/PDMS electret; recording the voltage signal Vi of the PTFE/PDMS-graphene electrode generator sensor device to complete the detection and sensing of the object under any impact load.