摘要
针对压电纤维复合材料在航天、航空领域的应用,研究极端环境温度对复合材料性能的影响。首先制备了基于锆钛酸铅(PZT)陶瓷的压电纤维复合材料,然后测试环境温度对压电纤维复合材料电学阻抗、自由应变、驱动性能和力学性能的影响。结果表明,环境温度对压电纤维复合材料的阻抗相位角差值有显著影响。随着环境温度的升高,压电纤维复合材料的自由应变和悬臂梁驱动性能均先增加后减小,环境温度为20℃时性能最佳,样品的最大纵向自由应变为604.0×10^(-6),驱动铝板悬臂梁产生的顶端位移为0.789 mm。当环境温度为-88℃和80℃时,样品最大纵向自由应变分别为20℃时的46.9%和51.3%,顶端位移分别为20℃时的79.6%和83.7%。当环境温度从-88℃升高至80℃时,压电纤维复合材料的抗拉强度逐渐提升。
As the piezoelectric fiber composites have exhibited important applications in the areas of aerospace and aviation, it is necessary to investigate the effects of extreme environmental temperatures on their properties. In this study, the lead zirconate titanate(PAT) piezoelectric fiber composite was prepared, and the electrical impedance, free strain, actuation performance and mechanical properties of piezoelectric fiber composite were tested at different ambient temperatures. The results show that the phase angle difference of piezoelectric fiber composite changes at different ambient temperatures. Both the free strain and the actuation performance of piezoelectric fiber composite increase at first and then decrease as the ambient temperature increases. When the ambient temperature is 20℃, the longitudinal strain of the sample is 604.0×10^(-6), and the tip displacement generated by driving the aluminum plate is 0.789 mm. The maximum longitudinal free strains of the samples at-88℃ and 80℃ are reduced to 46.9% and 51.3% respectively, comparing with the value at 20℃, while the tip displacements are reduced to 79.6%and 83.7% respectively. When the ambient temperature increases from-88℃ to 80℃, the mechanical properties of piezoelectric fiber composites also increase.
作者
张炯炯
袁晰
闫明洋
张少峰
陈卓
张斗
ZHANG Jiongjiong;YUAN Xi;YAN Mingyang;ZHANG Shaofeng;CHEN Zhuo;ZHANG Dou(School of Aeronautics and Astronautics,Central South University,Changsha 410083,China;State Key laboratory of Powder Metallurgy,Central South University,Changsha 410083,China)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2021年第2期583-590,共8页
Acta Materiae Compositae Sinica
基金
国家自然科学基金(U19A2087)
粉末冶金国家重点实验室自主课题。
关键词
压电纤维复合材料
环境温度
自由应变
驱动性能
力学性能
piezoelectric fiber composite
ambient temperature
free strain
actuation performance
mechanical properties
