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首页> 外文期刊>Journal of Materials Science >Bioinspired hierarchical interface design for improved mechanical and safety properties in energetic polymer composites
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Bioinspired hierarchical interface design for improved mechanical and safety properties in energetic polymer composites

机译：Bioinspired等级界面设计，用于改善能量聚合物复合材料的机械和安全性能

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摘要

Weak interfacial interaction and poor surface wettability always restrict and weaken the performances of energetic composites. Conventional surface modifications can hardly achieve a desired result, due to the inadequacy for solving the interfacial incompatibility. We here demonstrated bioinspired hierarchical-structured 2,6-diamino-3,5-dinitropyrazine-1-oxide particles through in situ "grafting from" polymerization of hyperbranched polyurethane (HBPU) on polydopamine surface. Benefiting from the enhanced interfacial interaction and surface wettability which facilitated mechanical performance, the final results revealed that a remarkable mechanical enhancement was successfully achieved through this way. Meanwhile, improved safety performance was gained, and the impact sensitivity was reduced to a large extent which was ascribed to the cushioning and protective effects of HBPU shells with soft segments. We believe this approach of constructing bioinspired hierarchical interface aiming at solving low surface wettability and weak interface will shed light on the design and preparation of high-performance composites through a novel and effective way.
机译：弱界面相互作用和表面润湿性差始终限制和削弱能量复合材料的性能。由于用于解决界面不相容性的不足，常规表面修饰可能几乎不能达到期望的结果。在这里，我们通过在多碳双胺表面上的超支化聚氨酯（HBPU）的聚合原位“从”聚合的聚氨酯（HBPU）的聚合，证明了生物定位的层次结构的2,6-二氨基-3,5-二硝基吡嗪-1-氧化物颗粒。受益于增强的界面相互作用和表面润湿性，促进了机械性能，最终结果表明，通过这种方式成功实现了显着的机械增强。同时，获得了改善的安全性能，并且影响敏感性在很大程度上降低，归因于HBPU壳与软段的缓冲和保护作用。我们认为这种构建旨在解决低表面润湿性和弱界面的生物定位等级界面的方法将通过新颖且有效的方式对高性能复合材料进行设计和制备。

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  • 来源
    《Journal of Materials Science》 |2020年第33期|共15页
  • 作者

    He Guansong; Li Xin; Jiang Yueqiang; Dai Yu; Xu Rong; Zeng Chengcheng; Tu Xiaoqing; Yang Zhijian;

  • 作者单位

    CAEP Inst Chem Mat Mianyang 621900 Sichuan Peoples R China;

    CAEP Inst Chem Mat Mianyang 621900 Sichuan Peoples R China;

    CAEP Inst Chem Mat Mianyang 621900 Sichuan Peoples R China;

    CAEP Inst Chem Mat Mianyang 621900 Sichuan Peoples R China;

    CAEP Inst Chem Mat Mianyang 621900 Sichuan Peoples R China;

    CAEP Inst Chem Mat Mianyang 621900 Sichuan Peoples R China;

    CAEP Key Lab Neutron Phys Mianyang 621999 Sichuan Peoples R China;

    CAEP Inst Chem Mat Mianyang 621900 Sichuan 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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