• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Thermally stable cellular poly(vinylidene) ferroelectrets: Optimization of CO2 driven inflation process
【24h】

Thermally stable cellular poly(vinylidene) ferroelectrets: Optimization of CO2 driven inflation process

机译：热稳定的细胞聚（偏二乙烯基）铁电流：CO2驱动膨胀过程的优化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Electrically charged cellular ferroelectrets can show excellent thermally stable piezoelectric activity and are therefore progressively used in electrochemical transducers. Given that an optimized cellular structure is a key for improving charge density and the associated piezoelectric properties in this material, we investigated the influence of CO2 inflation treatment using various gas diffusion expansion or inflation procedures on the piezoelectric d(33) coefficient and thermal stability of cellular poly(vinylidene) ferroelectrets and compare with the results (partially) obtained by N-2 inflation as reported in our previous study (Jahan, Mighri, Rodrigue, Ajji, J. Appl. Polym. Sci. 2019, 136, 47540). Samples were prepared using the conventional extrusion-stretching-inflation-corona charging method. Maximum d(33) coefficient for CO2-inflated samples is found to be around 30% higher than that of N-2-inflated samples (327 pC/N compared to 251 pC/N) by stepwise pressure application method. The key parameters addressed in the inflation procedures are the changes in sample thickness, morphology, and the void-height distribution in both gas treatments. The ferroelectrets show excellent thermal stability for up to 4 days at 90, 110, and 120 degrees C in both treatments with a slightly improved performance in CO2 gas. The higher activation energy of CO2-inflated samples (0.52 eV) than the N-2-inflated ones (0.43 eV) further confirms the stability data. (c) 2019 Wiley Periodicals, Inc.
机译：电荷的蜂窝铁电流可以显示出优异的热稳定压电活性，因此在电化学换能器中逐步使用。考虑到优化的蜂窝结构是改善电荷密度和相关的压电性能的键，我们研究了使用各种气体扩散膨胀或充气过程的CO2充气处理对压电D（33）系数和热稳定性的影响细胞聚（偏二乙烯基）铁电并与通过我们之前的研究中报告的N-2通货膨胀获得的结果（部分）（Jahan，Mighri，Rodrigue，Ajji，J.Phamp。Polym.Colm.Con。2019,136,47540）。使用常规的挤出拉伸膨胀 - 电晕充电方法制备样品。通过逐步压力施加方法，发现CO2膨胀样品的最大D（33）的CO2膨胀样品系数约为高于N-2膨胀样品（327pc / n）的30％。在通胀程序中寻址的关键参数是样品厚度，形态和气体处理中的空隙高度分布的变化。在两种处理中，铁电器在90,110和120℃下显示出优异的热稳定性，在CO 2气体中具有略微提高的性能。 CO2膨胀样品（0.52eV）的较高激活能量比N-2膨胀（0.43eV）进一步证实了稳定性数据。 （c）2019 Wiley期刊，Inc。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号