Compared with traditional methods for preparing dielectric elastomer (DE) films, electrohydrodynamic (EHD) 3D printing displays many advantages, notably full automation, computer control and flexible design. It also confers high printing resolution, high preparation efficiency with minimal probability of nozzle clogging. In this article, EHD 3D printing was employed to fabricate silicone rubber (SR) based DE films. In order to increase their dielectric constant, high dielectric copper phthalocyanine (CuPc) particles were added into the SR ink. Optimal printing conditions were determined by analyzing the effects of printing voltage and ink properties on the formation of liquid cone and the printed line width. The SR/CuPc composite film with 3 wt% CuPc particles (SR/CuPc-3) exhibits a high dielectric constant of 5.52, with a large actuated area strain of 23.7% under an electric field of 39.4 V μm⁻¹. Furthermore, under 100 cycles of electric field loading, SR/CuPc-3 demonstrate excellent electromechanical stability, indicating that EHD 3D printing holds a considerable potential for fabricating high-performance DE films in an efficacious manner.

与传统的制备介电弹性体（DE）薄膜的方法相比，电动流体力学（EHD）3D打印具有许多优势，特别是全自动，计算机控制和灵活的设计。它还具有高打印分辨率，高制备效率和最小的喷嘴堵塞可能性。在本文中，EHD 3D打印用于制造基于硅橡胶（SR）的DE膜。为了增加其介电常数，将高介电铜酞菁（CuPc）颗粒添加到SR墨水中。通过分析印刷电压和油墨性能对液体锥的形成和印刷线宽的影响，确定最佳印刷条件。具有3 wt％CuPc颗粒（SR / CuPc-3）的SR / CuPc复合膜表现出5.52的高介电常数，μ米^-1。此外，在100次电场加载循环下，SR / CuPc-3具有出色的机电稳定性，表明EHD 3D打印具有以有效方式制造高性能DE膜的巨大潜力。