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可拉伸的聚合物复合材料具有超高的压电性能.

Tongxiang Tang1, Zhonghui Shen2, Jian Wang2

  • 1State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.

National science review
|July 24, 2023
PubMed
概括

研究人员开发了一种高度伸展和压缩的压电复合材料,用于灵活的电子产品. 这种新型材料实现了巨大的压电系数和卓越的灵活性,为先进的智能设备铺平了道路.

关键词:
灵活的电子产品灵活的电子产品压电材料是压电材料.聚合物复合物的聚合物复合物.结构设计 结构设计 结构设计

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科学领域:

  • 材料科学 材料科学 材料科学
  • 电子工程 电子工程
  • 纳米技术纳米技术

背景情况:

  • 灵活的压电材料对于先进的电子产品至关重要,但在可变形性和压电性能之间面临着权衡.
  • 传统的铁电陶是脆弱的,而极性聚合物具有低压电系数,限制了它们的应用.

研究的目的:

  • 开发一种高度可拉伸和可压缩的压电复合材料,以提高灵活电子产品的性能.
  • 通过结合陶和聚合物特性来克服现有的压电材料的局限性.

主要方法:

  • 使用铁电陶骨架和弹性体矩阵制造复合材料.
  • 在陶/矩阵接口上,将放松性铁电基混合材料作为介电过渡层进行整合.
  • 压电特性,机电合因子,声阻抗和压缩应变下的循环稳定性的表征.

主要成果:

  • 实现了250 pm/V的巨型压电系数和65%的高电机联接因子 (k).
  • 经过证明的超低声阻 (3 MRayl) 和在50%的压缩应变下高周期性稳定性.
  • 复合材料具有卓越的灵活性和压电特性,这是由于通过陶骨架优化极化和负载转移以及有效的介电不匹配缓解.

结论:

  • 开发的压电复合材料提供了超高压电性能和卓越灵活性的协同组合.
  • 这一突破预计将大大推动灵活智能电子应用的发展.
  • 新型材料设计解决了灵活压电的关键挑战,为设备创新开辟了新的途径.