聚偏氟乙烯及其共聚物基压电复合材料的研究进展

Research progress of polyvinylidene fluoride and its copolymer piezoelectric composites

聚合物压电材料聚偏氟乙烯(PVDF)及其共聚物P(VDF-TrFE)、P(VDF-HFP)是一类典型的具有压电性的有机高分子材料,它们由于具有良好的力学性能、耐腐蚀性、生物相容性以及易于加工等特点而受到研究人员的广泛关注。但相对于传统无机类压电陶瓷材料来说,聚合物压电材料的压电常数仍相对较低,因此提升这类聚合物压电材料的压电性能已成为目前国内外的研究热点之一。本文对近年来国内外利用PVDF及其共聚物与不同功能材料进行复合来改善其压电性能的方法进行了概述,并对不同类型填料掺杂不同聚合物压电材料的利弊及发展趋势进行了展望。

Polymer piezoelectric materials polyvinylidene fluoride(PVDF)and its copolymers P(VDF-TRFE)and P(VDF-HFP)are typical organic polymer materials with piezoelectric properties.Currently,these materials attract great attention in academic and application area for their good mechanical properties,corrosion resistance,biocompatibility and easy processing.However,compared with the traditional inorganic piezoelectric ceramic materials,the piezoelectric constant of polymer piezoelectric materials is still relatively low,so improving the piezoelectric properties of such polymer piezoelectric materials has become one of the research hotspots at home and abroad.In this paper,the methods of improving the piezoelectric properties by combining PVDF and its copolymers with different functional materials at national and international levels in recent years are summarized,and the advantages and disadvantages of different types of fillers doped with different polymer piezoelectric materials and their development trends are prospected.