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Multi-functional polyurethane composites with self-healing and shape memory properties enhanced by graphene oxide

机译：具有自愈合和形状记忆性能的多功能聚氨酯复合材料，通过石墨烯氧化物增强

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摘要

Development of shape memory polymer materials with integrated self-healing ability, shape memory property, and outstanding mechanical properties is a challenge. Herein, isophorone diisocyanate, polytetramethylene ether glycol, dimethylglyoxime, and glycerol have been used to preparation polyurethane by reacting at 80 degrees C for 6 h. Then, graphene oxide (GO) was added and the reaction keep at 80 degrees C for 4 h to obtain polyurethane/GO composite with self-healing and shape memory properties. Scanning electron microscopy shows that the GO sheets were dispersed uniformly in the polyurethane matrix. The thermal stability was characterized by thermogravimetric analyses. The tensile test shows that the Young's modulus of the composites increases from 38.57 +/- 4.35 MPa for pure polyurethane to 95.36 +/- 10.35 MPa for the polyurethane composite with a GO content of 0.5 wt%, and the tensile strength increases from 6.28 +/- 0.67 to 15.65 +/- 1.54 MPa. The oxime carbamate bond and hydrogen bond endow the composite good self-healing property. The healing efficiency can reach 98.84%. In addition, the composite has excellent shape memory property, with a shape recovery ratio of 88.6% and a shape fixation ratio of 55.2%. This work provides a promising way to fabricate stimulus-responsive composite with versatile functions.
机译：开发具有综合自愈能力、形状记忆性能和优异力学性能的形状记忆聚合物材料是一个挑战。在此，使用异佛尔酮二异氰酸酯、聚四甲基醚乙二醇、丁二酮肟和甘油在80℃下反应6小时制备聚氨酯。然后，添加氧化石墨烯（GO），并在80℃下反应4小时，以获得具有自愈合和形状记忆性能的聚氨酯/GO复合材料。扫描电子显微镜显示GO片均匀地分散在聚氨酯基体中。通过热重分析对其热稳定性进行了表征。拉伸试验表明，对于GO含量为0.5 wt%的聚氨酯复合材料，复合材料的杨氏模量从纯聚氨酯的38.57+/-4.35 MPa增加到95.36+/-10.35 MPa，拉伸强度从6.28+/-0.67增加到15.65+/-1.54 MPa。氨基甲酸肟键和氢键赋予复合材料良好的自愈合性能。治愈率可达98.84%。此外，该复合材料具有良好的形状记忆性能，形状恢复率为88.6%，形状固定率为55.2%。这项工作为制备具有多种功能的刺激响应复合材料提供了一种很有前途的方法。

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  • 来源
    《Journal of Applied Polymer Science》 |2021年第34期|共12页
  • 作者

    Luo Xin; Wu Yuanpeng; Guo Meiling; Yang Xi; Xie Lingyun; Lai Jingjuan; Li Zhenyu; Zhou Hongwei;

  • 作者单位

    Southwest Petr Univ State Key Lab Oil &

    Gas Reservoir Geol &

    Exploita Chengdu Peoples R China;

    Southwest Petr Univ State Key Lab Oil &

    Gas Reservoir Geol &

    Exploita Chengdu Peoples R China;

    Southwest Petr Univ Sch New Energy &

    Mat Chengdu Peoples R China;

    Southwest Petr Univ Sch New Energy &

    Mat Chengdu Peoples R China;

    Southwest Petr Univ Sch New Energy &

    Mat Chengdu Peoples R China;

    Southwest Petr Univ State Key Lab Oil &

    Gas Reservoir Geol &

    Exploita Chengdu Peoples R China;

    Southwest Petr Univ State Key Lab Oil &

    Gas Reservoir Geol &

    Exploita Chengdu Peoples R China;

    Xian Technol Univ Sch Mat &

    Chem Engn Shaanxi Key Lab Photoelect Funct Mat &

    Devices Xian 710021 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化合物工业（高聚物工业）;
  • 关键词

    mechanical properties; elastomers; polyurethane;

    机译：机械性能;弹性体;聚氨酯;

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