静电纺钛酸钡/聚偏氟乙烯纳米复合柔性压电纤维膜  

Electrospun barium titanate/poly(vinylidene fluoride) nano-composite flexible piezoelectric fibrous membranes

作　　者：蒋洁[1] 陈胜[1] 李静静 付润芳[1] 林义[1] 顾迎春[1] 

机构地区：[1]四川大学轻纺与食品学院,四川成都610065

出　　处：《纺织学报》2018年第2期14-19,共6页Journal of Textile Research

基　　金：四川省科技计划项目资助(2017GZ0429)

摘　　要：为进一步提高聚偏氟乙烯(PVDF)的压电性能,采用具有铁电性能的钛酸钡(BaTiO_3)纳米颗粒为无机填料,通过静电纺丝技术制备BaTiO_3/PVDF纳米复合纤维膜。借助扫描电子显微镜、全反射红外光谱、差示扫描量热仪、X射线衍射以及脉冲电压测试等仪器对纤维膜的结构和性能进行了表征及分析,探究了不同添加量的BaTiO_3对复合纤维膜结晶结构及压电性能的影响。结果表明:静电纺丝过程中静电力的拉伸和纳米BaTiO_3的成核作用促进了PVDF具有压电性的β晶型的形成;当BaTiO_3质量分数为10%,复合纤维膜的β晶型含量达到90.8%,纤维膜的输出电压值由20 V增加至50 V;制得的BaTiO_3/PVDF复合纤维薄膜具有良好的压电性。In order to further improve the piezoelectric properties of poly（vinylidene fluoride） （PVDF） , barium titanate （BaTiO3） nanoparticles with ferroelectric properties were used as inorganic fillers in the PVDF matrix, and BaTiO3/PVDF nano-eomposite fibrous membranes were prepared by electrospinning method. The structures and properties of BaTiO3/PVDF fibrous composites were characterized by scanning electron microscopy, attenuated total reflection fourier transform infrared, differential scanning calorimetry, X-ray diffraction, impulse voltage test . The influences of BaTiO3 on the crystalline structures and piezoelectric properties of fibrous composites were also investigated. The resuhs show that both the electrostatic stretching during the eleetrospinning process and the nucleation function of BaTiO3 nanoparticles are beneficial to promote the formation of PVDF β phase. When the addition of BaTiO3 is 10%, the content of β phase of fibrous composites is 90. 8%, and the output voltage of fibrous composites increases from 20 V to 50 V. The prepared BaTiO3/PVDF nano-eomposite fibrous membranes have good piezoelectric properties.

关 键 词：静电纺丝 压电性 纳米钛酸钡 聚偏氟乙烯 

分 类 号：TQ342.712[化学工程—化纤工业]