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首页> 外文期刊>Materials Science and Engineering >Reduced graphene oxide coated polyurethane composite foams as flexible strain sensors for large deformation
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Reduced graphene oxide coated polyurethane composite foams as flexible strain sensors for large deformation

机译：将石墨烯氧化涂层的聚氨酯复合泡沫还原为柔性应变传感器，用于大变形

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摘要

Combining graphene composite with three-dimensional structure is an effective strategy to avoid the agglomeration of graphene nanosheets and significantly enhances the properties of composite at low graphene content. In this work, reduced graphene oxide coated polyurethane composite foams (RPFs) with different pore sizes were prepared by a simple and economical self-assembly method. The RPFs are found to have good structural integrity and excellent flexibility, with a remarkable ability to withstand large deformation of 90% and 3 orders of magnitude decrease of electrical resistance. The RPF composite with higher density and smaller pore size exhibits better elasticity and responsive piezoresistivity. The resistance-time curves of RPFs in compression and bending modes exhibits a quick response of loading and release procedures by 0.10 s and 0.74 s in compression, 1.14 s and 0.91 s in bending, respectively, showing a good potential application of flexible and highly sensitive strain sensors for large deformation.
机译：将石墨烯复合材料与三维结构相结合是一种有效的策略，以避免石墨烯纳米片的附聚并显着提高了低石墨烯含量下复合物的性质。在这项工作中，通过简单且经济的自组装方法制备具有不同孔径的氧化石墨烯涂覆的聚氨酯复合泡沫（RPF）。 RPF被发现具有良好的结构完整性和优异的灵活性，具有卓越的能力，承受电阻的90％和3个幅度的大变形。具有较高密度和更小的孔径的RPF复合材料具有更好的弹性和响应性压阻性。压缩和弯曲模式中RPF的阻力 - 时间曲线在压缩中的加载和释放程序的快速响应，分别在弯曲中的压缩，1.14秒和0.91秒，显示出柔性且高度敏感的良好潜在应用应变传感器，用于大变形。

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  • 来源
    《Materials Science and Engineering》 |2021年第10期|115360.1-115360.6|共6页
  • 作者

    Zhe Shi; An Li; Cong Zhang; Yang-Fei Zhang;

  • 作者单位

    School of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China;

    School of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China;

    School of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China;

    School of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Composite foams; Self-assembly; Electrical properties; Large deformation; Strain sensor;

    机译：复合泡沫;自我组装;电气性质;变形大;应变传感器;

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