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首页> 外文期刊>Journal of Materials Science >Synergistic modification effect of polyvinylidene fluoride and polydopamine on mechanical and damping properties of three-dimensional braided carbon fibers reinforced composites
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Synergistic modification effect of polyvinylidene fluoride and polydopamine on mechanical and damping properties of three-dimensional braided carbon fibers reinforced composites

机译：聚偏二氟乙烯和聚二胺对三维编织碳纤维加强复合材料机械和阻尼性能的协同改性效应

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摘要

In this study, a novel and excellent structure-damping composites (PVDF&PDA-CF3D/EP) with high damping and mechanical properties were prepared by coating double layers of polyvinylidene fluoride (PVDF) and polydopamine (PDA) on the surface of the three-dimensional braided carbon fibers (CF3D). The dynamic mechanical analysis and logarithmic decrement measurements were employed to determine the damping characteristic of composites. Results show that there is an increase of approximately 160% in the damping factor of PVDF&PDA-CF3D/EP at low temperature and low strain, compared with that of CF3D/EP. The shear strength of the composites was performed to investigate the synergy effects of PVDF&PDA on the improvement in the interfacial bonding strength between fibers and epoxy matrix. Owing to the optimum of the interface, the flexural strength, flexural modulus and impact strength of PVDF&PDA-CF3D/EP increase by 22%, 11.8% and 18.1%, respectively, compared with those of PVDF-CF3D/EP. Finally, the synergic reinforcing mechanism on the damping and mechanical properties of the composites is discussed in the paper. Therefore, this work provides a general path to make good structure-damping composites which possess great potential application in the industrial field.
机译：在该研究中，通过在三维表面上涂覆双层的聚偏二氟乙烯（PVDF）和聚二胺（PDA）制备具有高阻尼和机械性能的新颖和优异的结构阻尼复合材料（PVDF和PDA-CF3D / EP）。编织碳纤维（CF3D）。采用动态机械分析和对数减量测量来确定复合材料的阻尼特性。结果表明，与CF3D / EP相比，PVDF＆PDA-CF3D / EP的阻尼因子增加了大约160％的升高。进行复合材料的剪切强度以研究PVDF＆PDA对纤维和环氧基质之间界面粘结强度的改善的协同作用。由于界面的最佳最佳，与PVDF-CF3D / EP的抗弯曲强度，PVDF和PDA-CF3D / EP的冲击强度分别增加22％，11.8％和18.1％。最后，在纸上讨论了复合材料的阻尼和机械性能的协同增强机制。因此，这项工作提供了一种制造良好的结构阻尼复合材料的一般路径，该复合材料具有在工业领域具有很大的潜在应用。

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  • 来源
    《Journal of Materials Science》 |2019年第7期|共15页
  • 作者

    Yan Dedao; Zhang Hetong; Lu Shangchen; Yang Lizhuang; Zhao Xinyu; He Fang;

  • 作者单位

    Tianjin Univ Sch Mat Sci &

    Engn Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Mat Sci &

    Engn Tianjin 300072 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
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