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首页> 外文期刊>Journal of the American Ceramic Society >Processing Conditions and Aging Effect on the Morphology of PZT Electrospun Nanofibers, and Dielectric Properties of the Resulting 3-3 PZT/Polymer Composite
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Processing Conditions and Aging Effect on the Morphology of PZT Electrospun Nanofibers, and Dielectric Properties of the Resulting 3-3 PZT/Polymer Composite

机译：加工条件和老化对PZT电纺纳米纤维形态的影响以及所得3-3 PZT /聚合物复合材料的介电性能

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摘要

Lead zirconate titanate (PZT) nanofibers are obtained by elect-rospinning a sol-gel based solution and polyvinyl pyrrolidone (PVP) polymer, and by subsequent sintering of the electrospun precursor fibers. The average diameter of the precursor PZT/ PVP green fibers has increased with the aging of the precursor solution along with an increase in the viscosity. Bead-free uniform green PZT/PVP fibers were collected at about an ～230 nm average fiber diameter using a 28 wt% PVP ratio solution with a viscosity of 290 mPa. Shrinkage of 40% was recorded on the fiber diameter after sintering. The X-ray diffraction pattern of the annealed PZT fibers exhibits no preferred orientation and a perovskite phase. Preparation of 3-3 nanocomposites by the infusion of polyvinvlester into the nanofiber mat facilitates successful handling of the fragile mats and enables measurements of the dielectric properties. The dielectric constant of the PZT/polyvinylester nanocomposite of about 10% fiber volume fraction was found to be fairly stable and vary from 72 to 62 within the measurement range. The dielectric loss of the composite is below 0.08 at low frequencies and reaches a stable value of 0.04 for most of the measured frequencies.
机译：锆酸钛酸铅（PZT）纳米纤维是通过静电纺丝基于溶胶-凝胶的溶液和聚乙烯吡咯烷酮（PVP）聚合物，然后对电纺前体纤维进行烧结而获得的。随着前驱体溶液的老化以及粘度的增加，前驱体PZT / PVP绿纤维的平均直径已增加。使用28 wt％的PVP比例溶液（粘度为290 mPa），在平均纤维直径约〜230 nm处收集无珠的均质绿色PZT / PVP纤维。烧结后纤维直径记录为40％的收缩率。退火的PZT纤维的X射线衍射图谱显示没有优选的取向和钙钛矿相。通过将聚乙烯树脂注入到纳米纤维垫中来制备3-3纳米复合材料，有助于成功处理易碎垫，并能够测量介电性能。发现PZT /聚乙烯酯纳米复合材料的纤维体积分数约为10％，其介电常数相当稳定，并且在测量范围内从72变到62。复合材料的介电损耗在低频下低于0.08，在大多数测量频率下均达到0.04的稳定值。

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  • 来源
    《Journal of the American Ceramic Society》 |2009年第11期|2566-2570|共5页
  • 作者

    Ebru Mensur Alkoy; Canan Dagdeviren; Melih Papila;

  • 作者单位

    Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla, Istanbul 34956, Turkey;

    Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla, Istanbul 34956, Turkey;

    Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla, Istanbul 34956, Turkey;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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