改性PVDF及其多元共聚物在薄膜电容器中的应用  

Application of Modified PVDF and Its Multipolymer in Film Capacitors

作　　者：孟庆文[1] 胡帅捷 MENG Qingwen;HU Shuaijie(Zhejiang Juhua Co.,Ltd.,Fluoropolymer Division,Quzhou 324004,China)

机构地区：[1]浙江巨化股份有限公司氟聚合物事业部,浙江衢州324004

出　　处：《有机氟工业》2020年第4期52-56,64,共6页Organo-Fluorine Industry

摘　　要：聚合物薄膜电容器在紧凑和高效的电力系统中具有极大的应用前景。当前研究的主流趋势是由聚合物和纳米陶瓷共混或几种共聚物组成新型复合介电材料,可以在保持高的击穿场强的情况下提升材料的介电常数。铁电聚偏二氟乙烯(PVDF)及其共聚物因其本身具有较高的介电常数和击穿强度而得到广泛的研究。综述了在提高聚偏氟乙烯基复合材料能量密度方面的研究进展。结果表明,能量密度的提高主要是通过增强击穿场强和提高放电效率来实现的。介绍了与这些参数相关的微观结构设计、材料性能和机理。最后展望了聚偏氟乙烯基复合材料的发展前景和其他潜在聚合物基质的应用前景。Polymer film capacitors have great application prospects in compact and efficient power systems.At present,the main trend of research is to form a new composite dielectric material by blending polymer with nano-ceramic or by copolymer alloys,which can improve the dielectric constant of the material while maintaining a high breakdown field intensity.Ferroelectric polyvinylidene fluoride(PVDF)and its copolymers have been widely studied due to their high dielectric constant and breakdown strength.In this paper,some advances in improving the energy density of polyvinylidene fluoride composites are reviewed.The results show that the increase of energy density is mainly achieved by increasing the breakdown field strength and the discharge efficiency.The microstructure design,material properties and mechanism related to these parameters are introduced.Finally,the development prospect of polyvinylidene fluoride composites and the application prospect of other potential polymer substrates are prospected.

关 键 词：PVDF 多元共聚物 介电性能 能量密度 

分 类 号：TM53[电气工程—电器]