Abstract: Polyvinylidene fluoride (PVDF) has good film-forming properties,and PVDF film with high degree of orientation β crystal has good piezoelectric properties.PVDF can be processed into a flexible piezoelectric film in the field of sensor technology,and widely used in the future of human touch detection,flexible sensors,etc.There are many ways to prepare PVDF films.However,the preparation of PVDF films with good piezoelectric properties requires uniformity of β-phase in the film and reaches a certain content.The principles,steps and advantages and disadvantages of PVDF piezoelectric films prepared by solution casting method,electrospinning and ultrasonic atomization were discussed.Finally,the development prospect of PVDF piezoelectric film was prospected.
[1] Kang Guodong,Cao Yiming.Application and modification of poly(vinylidene fluoride) (PVDF) membranes-a review[J].Journal of Membrane Science,2014,463:145-165. [2] Lang S B,Muensit S.Review of some lesser-known applications of piezoelectric and pyroelectric polymers[J].Applied Physics A-Materials Science & Processing,2006,85(2):125-134. [3] Jia Yunfang,Chen Xinjuan,Ni Qingshan,et al.Dependence of the impact response of polyvinylidene fluoride sensors on their supporting materials' elasticity[J].Sensors,2013,13(7):8669-8678. [4] 赵东升.PVDF压电传感器的设计及其试验研究[D].镇江:江苏大学,2005. [5] Wang W,Fan H,Ye Y.Effect of electric field on the structure and piezoelectric properties of poly(vinylidene fluoride) studied by density functional theory[J].Polymer,2010,51(15):3575-3581. [6] 朱金海.PVDF压电薄膜及其传感器的制备与性能研究[D].哈尔滨:哈尔滨工业大学,2011. [7] 韩娟娟.PVDF微孔薄膜的成型研究[D].北京:北京化工大学,2012. [8] Hellman D J,Greenberg A R,Krantz W B.A novel process for membrane fabrication:thermally assisted evaporative phase separation (TAEPS)[J].Journal of Membrane Science,2004,230(1/2):99-109. [9] Li L,Zhang M,Rong M,et al.Studies on the transformation process of PVDF from α to β phase by stretching[J].Rsc Advances,2013,4(8):3928-3943. [10] Chinaglia D L,Gregorio R,Vollet D R.Structural modifications in stretch-induced crystallization in PVDF films as measured by small-angle X-ray scattering[J].Journal of Applied Polymer Science,2012,125(1):527-535. [11] Sencadas V,Gregorio R,Lanceros-Mendez S.α to β phase transformation and microestructural changes of PVDF films induced by uniaxial stretch[J].Journal of Macromolecular Science Part B-Physics,2009,48:514-525. [12] Costa R G F,Oliveira J E,Paula G F,et al.Electrospinning of polymers in solution.part Ⅰ:theoretical foundation[J].Polimeros-Ciencia E Tecnologia,2012,22(2):170-177. [13] Valizadeh A,Farkhani S M.Electrospinning and electrospun nanofibres[J].IET Nanobiotechnology,2014,8(2):83-92. [14] Baji A,Mai Y,Li Q,et al.Electrospinning induced ferroelectricity in poly(vinylidene fluoride) fibers[J].Nanoscale,2011,3(8):3068-3071. [15] 郑高峰,王凌云,孙道恒.基于近场静电纺丝的微/纳米结构直写技术[J].纳米技术与精密工程,2008,6(1):20-23. [16] 于永泽,刘媛媛,陈伟华,等.溶剂挥发对静电纺丝纳米纤维支架直径与沉积的影响[J].光学精密工程,2014,22(2):420-425. [17] 毛梦烨,黄涛,吴维杰,等.纺丝参数对聚偏氟乙烯静电纺纤维膜β相含量的影响[J].合成纤维,2014(5):18-22. [18] Li D,Xia Y.Electrospinning of nanofibers:reinventing the wheel?[J].Advanced Materials,2004,16(14):1151-1170. [19] Bae J H,Chang S H.Characterization of an electroactive polymer (PVDF-TrFE) film-type sensor for health monitoring of composite structures[J].Composite Structures,2015,131:1090-1098. [20] Chang C,Fuh Y K,Lin L.A direct-write piezoelectric PVDF nanogenerator[C]//Solid-State Sensors,Actuators and Microsystems Conference.Transducers International,2009. [21] Zheng J,Yan X,Li M M,et al.Electrospun aligned fibrous arrays and twisted ropes:fabrication,mechanical and electrical properties,and application in strain sensors[J].Nanoscale Research Letters,2015,10(1):475. [22] Lei T,Xu L,Zhan Z,et al.Direct fabrication of polymer nanofiber membrane for piezoelectric vibration sensor[J].Sensors,2011,263(5):1367-1370. [23] 王凌云,马思远,吴德志.电纺压电聚偏二氟乙烯有序纳米纤维及其在压力传感器中的应用[J].光学精密工程,2016(10):2498-2504. [24] 陈健.超声雾化热解法制备ZnO薄膜结构及其性能研究[D].北京:北京工业大学,2004. [25] Fuse T,Hirota Y,Kobayashi N,et al.Characteristics of low vapor pressure oil ignition developed with irradiation of mega hertz level ultrasonic[J].Fuel,2004,83(16):2205-2215. [26] Muoz-Aguirre S,Nakamoto T,Moriizumi T.Study of deposition of gas sensing films on quartz crystal microbalance using an ultrasonic atomizer[J].Sensors & Actuators B Chemical,2005,105(2):144-149. [27] 王斌.静电增强超声雾化热解法制备ZnO薄膜的性能研究[D].上海:上海大学,2009. [28] 冯庆.超声雾化热分解气相沉积法制备TiO2薄膜的气敏特性研究[J].真空科学与技术学报,2010(4):385-389. [29] 邓博洋.超声雾化分解法制备Mn/TiO2系列低温SCR催化剂研究[D].杭州:浙江工商大学,2015. [30] 叶芸.聚偏氟乙烯薄膜及超薄膜的制备及特性研究[D].成都:电子科技大学,2007. [31] Ye Y,Jiang Y,Wang T,et al.Preparation and characterization of polymeric PVDF films by ultrasonic atomization[J].Integrated Ferroelectrics,2007,88:27-32.