Yu Yaonan, Narita Fumio
Department of Frontier Sciences for Advanced Environment, Graduate School of Environmental Studies, Tohoku University, Sendai 980-8579, Japan.
Polymers (Basel). 2021 Sep 19;13(18):3184. doi: 10.3390/polym13183184.
Wireless sensor networks are the future development direction for realizing an Internet of Things society and have been applied in bridges, buildings, spacecraft, and other areas. Nevertheless, with application expansion, the requirements for material performance also increase. Although the development of carbon-fiber-reinforced polymer (CFRP) to achieve these functions is challenging, it has attracted attention because of its excellent performance. This study combined the CFRP electrode with epoxy resin containing potassium sodium niobate piezoelectric nanoparticles and successfully polarized the composite sample. Furthermore, a three-point bending method was applied to compare the bending behavior of the samples. The peak output voltage produced by the maximum bending stress of 98.4 MPa was estimated to be 0.51 mV. Additionally, a conversion efficiency of 0.01546% was obtained. The results showed that the piezoelectric resin with CFRPs as the electrode exhibited stress self-inductance characteristics. This study is expected to be applied in manufacturing self-sensing piezoelectric resin/CFRP composite materials, paving the way for developing stable and efficient self-sensing structures and applications.
无线传感器网络是实现物联网社会的未来发展方向，已应用于桥梁、建筑、航天器等领域。然而，随着应用的扩展，对材料性能的要求也在提高。尽管开发用于实现这些功能的碳纤维增强聚合物（CFRP）具有挑战性，但因其优异的性能而受到关注。本研究将CFRP电极与含有铌酸钾钠压电纳米颗粒的环氧树脂相结合，成功地使复合样品极化。此外，采用三点弯曲法比较样品的弯曲行为。由98.4 MPa的最大弯曲应力产生的峰值输出电压估计为0.51 mV。此外，获得了0.01546%的转换效率。结果表明，以CFRP为电极的压电树脂表现出应力自感应特性。本研究有望应用于制造自传感压电树脂/CFRP复合材料，为开发稳定高效的自传感结构及应用铺平道路。
