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首页> 外文期刊>ACS Macro Letters >Tunable and Processable Shape-Memory Materials Based on Solvent-Free, Catalyst-Free Polycondensation between Formaldehyde and Diamine at Room Temperature
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Tunable and Processable Shape-Memory Materials Based on Solvent-Free, Catalyst-Free Polycondensation between Formaldehyde and Diamine at Room Temperature

机译：基于甲醛和二胺之间的无溶剂，无催化剂的无透明度的可调谐和加工的形状记忆材料在室温下

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摘要

Compared with traditional thermosets, malleable thermosets have more applications in aerospace, biotechnology, and construction. Here we report a one-step, solvent-free, catalyst-free polycondensation method between diamine and formaldehyde to prepare a series of malleable hemiaminal dynamic covalent networks (HDCNs). The materials have excellent malleability and reprocessability by hot pressing. The Young's modulus and breaking strength of HDCNs obtained by the polycondensation of formaldehyde and 4,4-diaminodiphenylmethane (MDA) are as high as 1.6 GPa and 60 MPa, respectively, which can be facilely adjusted through the introduction of polyetheramine-400 (PEDA). Moreover, the HDCNs feature the shape memory ability with a recovery ratio above 93.5% and can be recycled by the addition of different monomers. This promising HDCN, prepared from economical raw materials, may have vast applications in industries.
机译：与传统热固性件相比，可延展的热固性件在航空航天，生物技术和施工中具有更多应用。 在这里，我们在二胺和甲醛之间报道一步，无溶剂，无催化剂的可缩聚方法，制备一系列可延展的半骨动型共价网络（HDCN）。 通过热压，材料具有优异的延伸性和再循环性。 通过甲醛和4,4-二氨基二苯基甲烷（MDA）的缩聚获得的HDCN的杨氏模量和断裂强度分别高达1.6GPa和60MPa，这可以通过引入聚醚胺-400（PEDA）来施用。 。 此外，HDCNS具有回收率高于93.5％的形状记忆能力，并且可以通过添加不同单体来再循环。 这一有前途的HDCN，由经济原材料制备，可能在行业中具有广大应用。

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  • 来源
    《ACS Macro Letters》 |2019年第5期|共6页
  • 作者

    Lei Hengxin; Wang Shengnan; Liaw Der Jang; Cheng Yilong; Yang Xutong; Tan Jidong; Chen Xingxing; Gu Junwei; Zhang Yanfeng;

  • 作者单位

    Xi An Jiao Tong Univ Xian Key Lab Sustainable Energy Mat Chem MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Dept Appl Chem Sch Sci Xian 710049 Shaanxi Peoples R China;

    China Acad Engn Phys Inst Chem Mat Mianyang 621900 Sichuan Peoples R China;

    Natl Taiwan Univ Sci &

    Technol Dept Chem Engn Taipei 10607 Taiwan;

    Xi An Jiao Tong Univ Xian Key Lab Sustainable Energy Mat Chem MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Dept Appl Chem Sch Sci Xian 710049 Shaanxi Peoples R China;

    Northwestern Polytech Univ MOE Key Lab Mat Phys &

    Chem Extraordinary Condit Shaanxi Key Lab Macromol Sci &

    Technol Dept Appl Chem Sch Sci Xian 710072 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Xian Key Lab Sustainable Energy Mat Chem MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Dept Appl Chem Sch Sci Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Xian Key Lab Sustainable Energy Mat Chem MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Dept Appl Chem Sch Sci Xian 710049 Shaanxi Peoples R China;

    Northwestern Polytech Univ MOE Key Lab Mat Phys &

    Chem Extraordinary Condit Shaanxi Key Lab Macromol Sci &

    Technol Dept Appl Chem Sch Sci Xian 710072 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Xian Key Lab Sustainable Energy Mat Chem MOE Key Lab Nonequilibrium Synth &

    Modulat Conden Dept Appl Chem Sch Sci Xian 710049 Shaanxi Peoples R China;

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  • 正文语种 eng
  • 中图分类 有机化学;
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