近场静电纺丝制备P(VDF-TrFE)压电纤维  

Preparation of P(VDF-TrFE) Piezoelectric Fiber by Near-field Electros Tatic Spinning

作　　者：穆迪 郭明森[1] 邢晓红[2] MU Di;GUO Mingsen;XING Xiaohong(State Key Lab.of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Nanhang Jincheng College,Nanjing University of Aeronautics and Astronautics,Nanjing 211156,China)

机构地区：[1]南京航空航天大学机械结构力学及控制国家重点实验室,江苏南京210016 [2]南京航空航天大学金城学院,江苏南京211156

出　　处：《压电与声光》2018年第5期665-669,共5页Piezoelectrics & Acoustooptics

基　　金：江苏省自然科学基金资助项目(BK20131362);中央高校基本科研业务费专项基金资助项目(NS2016007);江苏高校优势学科建设工程基金资助项目(PAPD)

摘　　要：采用近场静电纺丝法制备了P(VDF-TrFE)(聚偏氟乙烯PVDF和三氟乙烯TrFE的共聚物)压电纤维,研究了不同的电纺工艺参数对纤维直径和形貌的影响。结果表明,近场静电纺丝法的工艺参数对纤维形貌特征有决定性影响。其中,P(VDF-TrFE)电纺溶液的质量浓度对纤维的形成起决定性因素,当P(VDF-TrFE)电纺溶液质量比小于12%时,液滴下落过程中溶液中的溶剂挥发速度不够,导致电纺工作时溶液沉积到衬底前无法呈纤维状;在合适的驱动电压范围内,施加的电压越大,纤维直径越细;同样,采集器的移动速度越快,纤维的直径越细;电纺获得的P(VDF-TrFE)纤维直径可达(0.7~12)μm。此外,根据P(VDF-TrFE)自身的压电特性,给以纤维一定的弯曲形变,测试了电纺丝法制备的P(VDF-TrFE)纤维是否产生极化。实验结果表明,原位制备的纤维未能表现出明显的压电性。The P（VDF-TrFE）piezoelectric fiber（polyvinylidene fluoride and trifluoroethylene copolymer）was prepared by using the method of near-field electrostatic spinning and the effects of different processing parameters on the diameter and morphology of the fibers were studied.The results show that the processing parameters of nearfield electrostatic spinning play an important role in the morphology of fibers;especially the concentration of P（VDFTrFE）electric spinning solution has a significant influence on the formation of fibers.The insufficiency of volatilization rate in the process of droplets falling will result in fiber forming failure when the P（VDF-TrFE）electric spinning solution concentration is lower than 12%.Within a suitable driving voltage range,the larger the applied voltage is,the finer the fiber diameter.Also,the faster the collector moves,the finer the diameter of the fiber.The diameter of P（VDF-TrFE）fiber prepared by the near-field electrostatic spinning is up to （0.7-12）μm.In addition,according to the piezoelectric properties of P（VDF-TrFE）itself,a certain flexural deformation of the fiber is treated to test the polarization of the P（VDF-TrFE）fibers prepared by the electric spinning process.The experimental results show that the P（VDF-TrFE）fiber prepared in situ cannot show obvious piezoelectricity.

关 键 词：近场静电纺丝 P(VDF-TrFE) 压电纤维 铁电 极化 

分 类 号：TN384[电子电信—物理电子学]