Song Shiping, Li Yijun, Wang Qi, Zhang Chuhong
State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University Chengdu 610065 China
RSC Adv. 2021 Nov 24;11(60):37923-37931. doi: 10.1039/d1ra06915b. eCollection 2021 Nov 23.
3D printed piezoelectric devices, due to their sufficient multidimensional deformation and excellent piezoelectric properties, are one of the most promising research directions. However, the lack of high loaded piezoelectric composites is the key bottleneck restricting the enhancement of the piezoelectric output. In this work, we successfully prepared a novel high loaded polyvinylidene fluoride (PVDF)/barium titanate (BaTiO) piezoelectric composite suitable for selective laser sintering (SLS) 3D printing solid state shear milling (SM) technology. The 50 wt% BaTiO filling made the most outstanding contribution to the piezoelectric properties of the composites. The 3D printed cymbal parts with a stress amplification effect exhibited outstanding piezoelectric conversion efficiency and responsiveness, whose open circuit voltage and short circuit current could reach 20 V and 1.1 μA, respectively. This work not only contributed a new high loaded piezoelectric composite for SLS processing, but also provided a novel piezoelectric performance enhancement strategy by the construction of 3D structure.
3D打印压电器件因其充分的多维变形和优异的压电性能，是最有前景的研究方向之一。然而，缺乏高负载压电复合材料是限制压电输出增强的关键瓶颈。在这项工作中，我们成功制备了一种适用于选择性激光烧结（SLS）3D打印的新型高负载聚偏氟乙烯（PVDF）/钛酸钡（BaTiO）压电复合材料——固态剪切研磨（SM）技术。50 wt%的BaTiO填充物对复合材料的压电性能贡献最为突出。具有应力放大效应的3D打印钹形部件表现出出色的压电转换效率和响应性，其开路电压和短路电流分别可达20 V和1.1 μA。这项工作不仅为SLS加工贡献了一种新型高负载压电复合材料，还通过构建3D结构提供了一种新颖的压电性能增强策略。
