Joint Project Proposal on: Development, Characterization, and Applications of Cellular Fluoropolymer Films with Ferroelectret Properties Subproject on: Application-related Properties and Applications of Cellular Ferroelectrets

联合项目提案：具有铁电驻极体特性的多孔含氟聚合物薄膜的开发、表征和应用子项目：多孔铁电驻极体的应用相关特性和应用

• 批准号: 5447325
• 负责人: Professor Dr. Gerhard M. Sessler
• 金额: --
• 依托单位: Abteilung Physik weicher Materie (SoMaP)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2006-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5447325?language=en
• 关键词: Joint; Project; Proposal; Development; Characterization

This joint project of the Universities of Erlangen, Potsdam, Darmstadt, and Linz (the latter as a foreign partner) is concerned with the development, characterization and application of charged fluoropolymer films with cellular structure. The geometry of this voided structure and its elastic properties will be designed such that the films are optimal for use as ferroelectrets, i.e. as materials with high piezoelectric coefficients. The Darmstadt subproject relates first to the optimization of the cellular structure, in particular to suitable pressure expansion and charging such that good application-related properties are achieved. The processing and measuring steps will be first performed an the already available cellular polypropylene and later, as soon as available from Erlangen, an the cellular fluoropolymers. The second task of the Darmstadt Laboratory is the design and implementation of a series of applications for which these materials are particularly suited in the sense that the resultant devices are simpler and/or better than existing devices. Among these are piezoelectric microphones, both single film and stacked-film, with omnidirectional and directional charactestics, ultrasonic transmitters, parametric arrays, and headphones. These transducers will be initially designed with the optimized cellular PP films. As soon as suitable cellular fluoropolymer films are available, these will be incorporated into the systems.

埃尔兰根大学、波茨坦大学、达姆施塔特大学和林茨大学（后者为外国合作伙伴）的这一联合项目涉及具有蜂窝状结构的带电氟聚合物薄膜的开发、表征和应用。该空隙结构的几何形状及其弹性特性将被设计成使得膜对于用作铁电驻极体（即，作为具有高压电系数的材料）是最佳的。达姆施塔特子项目首先涉及蜂窝结构的优化，特别是合适的压力膨胀和充电，从而实现良好的应用相关性能。加工和测量步骤将首先在已经可获得的多孔聚丙烯上进行，随后，一旦可从埃尔兰根获得，则在多孔含氟聚合物上进行。达姆施塔特实验室的第二项任务是设计和实施一系列应用，这些材料特别适合于这种应用，即所得到的器件比现有器件更简单和/或更好。其中包括具有全向和定向特性的单膜和叠膜压电麦克风、超声波发射器、参数阵列和耳机。这些传感器将最初设计与优化的蜂窝PP薄膜。一旦有合适的多孔含氟聚合物薄膜可用，这些薄膜将被纳入系统中。