摘要
本研究结合溶液浇注法与单向拉伸法制备了一种二氧化锰纤维/聚偏氟乙烯柔性压电复合薄膜,讨论了不同添加量的二氧化锰(MnO 2)纤维对聚偏氟乙烯(PVDF)形貌结构及压电性能的影响。实验结果表明,MnO 2纤维能促进复合薄膜中压电β相的形成,增强界面耦合效应,进而有效提升复合薄膜的压电性能。当MnO 2添加量为0.4%(质量分数)时,复合薄膜的压电系数d 33达到峰值(-30 pC/N),几乎为纯PVDF的两倍。悬臂梁激振开路电压测试进一步表明,这种新型高压电性复合薄膜具有较高的输出电压值(1.7 V),相比纯PVDF提高了50%左右,在能量采集及传感领域显示了巨大的应用潜力。
In this work,a combination of solution casting and uniaxially stretching was adopted to fabricate flexible poly(vinylidene fluoride)(PVDF)based piezoelectric composites films loaded with MnO2 fiber.The effect of MnO2 fiber loadings on the microstructure and piezoelectric performance was investigated.The results demonstrated that the MnO2 fiber can promote the formation ofβ-phase,interfacial coupling effect and subsequently the piezoelectric response of composites films.With a loading of 0.4wt%,the piezoelectric coefficient d 33 of composites films reached the maximum of-30 pC/N,which was almost double that of pure PVDF.Furthermore,the cantilever test implied that the novel compo-sites films with high piezoelectric response were also capable of generating high output voltage up to 1.7 V,which was 50%higher that of pure PVDF.The excellent piezoelectric and output performance of composites films demonstrated their great potential application in energy harvesting and sensing areas.
作者
杨路
赵秋莹
申明霞
裘进浩
YANG Lu;ZHAO Qiuying;SHEN Mingxia;QIU Jinhao(College of Mechanics and Materials,Hohai University,Nanjing 210098,China;State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2020年第24期24145-24149,共5页
Materials Reports
基金
国家自然科学基金(51905149)
江苏省博士后科研资助计划(2020Z015)
中央高校基本科研业务费项目(B200202130)。
