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Infrared induced repeatable self-healing and removability of mechanically enhanced graphene-epoxy flexible materials

机译:红外诱导的可重复自愈和机械增强的石墨烯 - 环氧柔性材料的可拆卸性

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摘要

A repeatable self-healing epoxy composite mechanically enhanced by graphene nanosheets (GNS) was prepared from an epoxy monomer with Diels-Alder (DA) bonds, octanediol glycidyl ether (OGE) and polyether amine (D230). The GNS/epoxy composites, with a maximum tensile modulus of 14.52 +/- 0.45 MPa and elongation at break more than 100%, could be healed several times under Infrared (IR) light with the healing efficiency as high as 90% through the molecule chain mobility and the rebonding of reversible DA bonds between furan and maleimide. Also, they displayed excellent recyclable ability by transforming into a soluble polymer, which offers a wide range of possibilities to produce epoxy flexible materials with healing and removable abilities.
机译:由石墨烯纳米片(GNS)机械增强的可重复的自愈合环氧复合材料由具有Diels-Alder(DA)键,辛醇缩水甘油醚(OGE)和聚醚胺(D230)的环氧单体制备。 具有14.52 +/- 0.45MPa的最大拉伸模量的GNS /环氧复合材料,并且断裂伸长率超过100%,可以在红外(IR)光下愈合几次,愈合效率高达90%通过分子 连锁机会与呋喃与马来酰亚胺之间可逆DA债券的纠缠。 此外,它们通过转化为可溶性聚合物而显示出优异的可回收能力,其提供了具有愈合和可拆卸能力的各种可能性来生产环氧柔性材料。

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  • 来源
    《RSC Advances》 |2019年第25期|共9页
  • 作者单位

    Sci &

    Technol Surface Phys &

    Chem Lab 9 Huafengxincun Jiangyou City 621908 Sichuan Peoples R China;

    China Acad Engn Phys Inst Mat Mianyang City 621907 Sichuan Peoples R China;

    Southwest Univ Sci &

    Technol Dept Mat Mianyang 621010 Peoples R China;

    Sci &

    Technol Surface Phys &

    Chem Lab 9 Huafengxincun Jiangyou City 621908 Sichuan Peoples R China;

    Chengdu Sci &

    Technol Dev Ctr Chengdu 610200 Sichuan Peoples R China;

    Sci &

    Technol Surface Phys &

    Chem Lab 9 Huafengxincun Jiangyou City 621908 Sichuan Peoples R China;

    China Acad Engn Phys Inst Mat Mianyang City 621907 Sichuan Peoples R China;

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

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