P(VDF-TrFE)聚合物在声发射传感器方面的应用
Application of P(VDF-TrFE) Copolymer in Acoustic Emission Sensor
DOI: 10.12677/JSTA.2020.82004, PDF,    国家自然科学基金支持
作者: 廖佳妮：中国工程物理研究院化工材料研究所，四川 绵阳;西安交通大学理学院，陕西 西安；田 昕：中国工程物理研究院化工材料研究所，四川 绵阳；谭少博, 张志成：西安交通大学理学院，陕西 西安
关键词: P(VDF-TrFE)；退火温度；介电性能；压电性能；声发射；P(VDF-TrFE)； Annealed Temperatures； Dielectric； Piezoelectric； Acoustic Emission
摘要: 为了研究聚(偏氟乙烯-三氟乙烯) (P(VDF-TrFE))聚合物对声发射信号接收及传感性能的影响，采用流延法制备了P(VDF-TrFE)薄膜，系统地比较了经不同退火温度处理的P(VDF-TrFE)聚合物的结晶度和电学性能，并建立了一种快速测试P(VDF-TrFE)聚合物薄膜声发射响应性能的方法。结果表明：随退火温度升高，P(VDF-TrFE)聚合物结晶度和介电常数逐渐增加。在电场200 MV/m下，经150℃退火处理的薄膜压电应变常数最大，其值为24.5 pC/N。提高退火温度同样有利于薄膜的声发射传感性能，其接收信号峰幅值可达72.2 mV。这为PVDF基氟聚合物在声发射传感器方面的应用提供了参考。
Abstract: In order to study the effect of poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) copolymer on the acoustic emission (AE) signal receiving and sensing performance, P(VDF-TrFE) films were prepared by solution casting method. The crystallinity and electrical properties of the P(VDF-TrFE) films annealed at different temperatures were systematically compared, and a method for quickly testing the acoustic emission response performance of P(VDF-TrFE) films was established. The results show that the crystallinity and dielectric constant of P(VDF-TrFE) copolymer enhance with the increase of annealed temperature. Under the electric field of 200 MV/m, the piezoelectric coefficient of the film annealed at 150˚C is the largest, with a value of 24.5 pC/N. Increasing annealed temperature is also beneficial to the acoustic emission sensing performance of the film, and the peak amplitude of the received signal can reach 72.2 mV. This provides a reference for the application of PVDF-based fluoropolymer in acoustic emission sensors.
文章引用：廖佳妮, 田昕, 谭少博, 张志成. P(VDF-TrFE)聚合物在声发射传感器方面的应用[J]. 传感器技术与应用, 2020, 8(2): 34-44. https://doi.org/10.12677/JSTA.2020.82004

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