Additive Manufacturing of Bi-Continuous Piezocomposites With Triply Periodic Phase Interfaces for Combined Flexibility and Piezoelectricity
Additive Manufacturing of Bi-Continuous Piezocomposites With Triply Periodic Phase Interfaces for Combined Flexibility and Piezoelectricity
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具有三周期相界面的双连续压电复合材料的增材制造，实现灵活性和压电性的结合
DOI：
10.1115/1.4044708
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Chen, Lei
中科院分区：
文献类型：
--
作者：
Song, Xuan;He, Li;Yang, Wenhua;Wang, Zhuo;Chen, Zeyu;Guo, Jing;Wang, Hong;Chen, Lei
为了同时实现压电材料的机械柔性和压电性，提出了一种可添加制造的双连续压电复合材料结构。这种结构包括主动铁电陶瓷相和被动柔性聚合物相，它们由一个可裁剪的相界面分开。由于具有良好的弹性性能和载荷传递效率，三周期极小曲面被用来定义相界面。采用悬浮式封闭式投影光刻工艺对该材料进行了添加制备。介绍了包括聚合物渗透、电极和极化在内的后处理。通过数值计算和实验研究了该复合材料的压电性。结果表明，可剪裁的三重周期相界面在提高双连续压电复合材料的机械柔韧性和压电性方面起到了重要作用。
An additive manufacturing-enabled bi-continuous piezocomposite architecture is presented to achieve mechanical flexibility and piezoelectricity simultaneously in piezoelectric materials. This architecture comprises an active ferroelectric ceramic phase and a passive flexible polymer phase, which are separated by a tailorable phase interface. Triply periodic minimal surfaces were used to define the phase interface, due to their excellent elastic properties and load transfer efficiency. A suspension-enclosing projection-stereolithography process was used to additively manufacture this material. Postprocesses including polymer infiltration, electroding, and poling are introduced. Piezoelectric properties of the piezocomposites are numerically and experimentally studied. The results highlight the role of tailorable triply periodic phase interfaces in promoting mechanical flexibility and piezoelectricity of bi-continuous piezocomposites.
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