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Underwater polyurethane adhesive with enhanced cohesion by postcrosslinking of glycerol monomethacrylate

机译：水下聚氨酯粘合剂通过甘油单甲基丙烯酸甘油的后交联增强凝聚力

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摘要

Polyurethane (PU) has been widely used as a glue in various areas. However, adhesion in the presence of water is greatly impeded and results in most synthetic adhesive failure. In this study, we designed and synthesized a novel PU construction; underwater PU adhesives were created by the incorporation of synthetic glycerol monomethacrylate (GMA). Furthermore, the urethane structure helped the adhesive eliminate the interfacial water barrier through interactions that were stronger than hydrogen bonding, and GMA as a crosslinking agent was used to generate post-covalent-crosslinking networks through radical polymerization. This enhanced the cohesion so the diffusion of water molecules could be overcome. Fourier transform infrared spectroscopy, thermogravimetric analysis, underwater adhesion measurements, and tensile tests were used to characterize the chemical and mechanical properties of the as-obtained adhesive. This led to an adhesive with a better mechanical strength and interfacial adhesion in water, and the results show that the mechanical properties (tensile strength, Young's modulus, and tensile elongation) of the GMA-PU adhesive were higher than those of the pure PU. As for the 4% GMA, the tensile strength was enhanced by 24.3% and the elongation was enhanced by 125.23% over those of the pure PU. This confirmed that the incorporation of GMA into the PU matrix indeed induced increasing cohesion, and the sample's adhesive strength was 21.19 +/- 3.9 MPa; this indicated a superior adhesive strength over that of the pure PU. In addition, we can foresee that underwater adhesion will play an important role in prospective surgery and engineering areas. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46579.
机译：聚氨酯（PU）已广泛用作各种区域的胶水。然而，在水存在下粘附大大阻碍并导致大多数合成粘合剂失效。在这项研究中，我们设计并合成了一种新型PU建筑;通过掺入合成甘油单甲基丙烯酸酯（GMA）来产生水下PU粘合剂。此外，聚氨酯结构有助于粘合剂通过比氢键合的相互作用消除界面水屏障，并且使用GMA作为交联剂，通过自由基聚合产生共价交联网络。这增强了内聚力，因此可以克服水分子的扩散。傅里叶变换红外光谱，热重分析，水下粘附测量和拉伸试验用于表征所获得的粘合剂的化学和机械性能。这导致粘合剂具有更好的机械强度和水中的界面粘附，结果表明，GMA-PU粘合剂的机械性能（拉伸强度，杨氏模量和拉伸伸长率）高于纯PU的机械性能（抗拉强度，杨氏模量和拉伸伸长率）。至于4％GMA，抗拉强度增强了24.3％，伸长率在纯PU的那些上增强了125.23％。这证实，GMA掺入P​​U基质的情况实际上诱导增加的内聚力，并且样品的粘合强度为21.19 +/- 3.9MPa;这表明纯PU的优异粘合强度。此外，我们可以预见到水下粘连将在预期手术和工程领域发挥重要作用。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018,135,46579。

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  • 来源
    《Journal of Applied Polymer Science》 |2018年第32期|共8页
  • 作者

    Li Xie; Li Wei; Liu Zhiqing; Wang Xiaolin; Guo Heling; Wang Rongjie; Guo Xuhong; Li Cuihua; Jia Xin;

  • 作者单位

    Shihezi Univ Engn Res Ctr Mat Oriented Chem Engn Xinjiang Bing Key Lab Mat Oriented Chem Engn Xinjiang Uygur Aut Sch Chem &

    Chem Engn Key Lab Green Proc Chem Engn Shihezi 832003 Peoples R China;

    Tech Univ Dresden Chem Dept Mommsenstr 4 D-01062 Dresden Germany;

    Shihezi Univ Engn Res Ctr Mat Oriented Chem Engn Xinjiang Bing Key Lab Mat Oriented Chem Engn Xinjiang Uygur Aut Sch Chem &

    Chem Engn Key Lab Green Proc Chem Engn Shihezi 832003 Peoples R China;

    Shihezi Univ Engn Res Ctr Mat Oriented Chem Engn Xinjiang Bing Key Lab Mat Oriented Chem Engn Xinjiang Uygur Aut Sch Chem &

    Chem Engn Key Lab Green Proc Chem Engn Shihezi 832003 Peoples R China;

    Shihezi Univ Engn Res Ctr Mat Oriented Chem Engn Xinjiang Bing Key Lab Mat Oriented Chem Engn Xinjiang Uygur Aut Sch Chem &

    Chem Engn Key Lab Green Proc Chem Engn Shihezi 832003 Peoples R China;

    Shihezi Univ Engn Res Ctr Mat Oriented Chem Engn Xinjiang Bing Key Lab Mat Oriented Chem Engn Xinjiang Uygur Aut Sch Chem &

    Chem Engn Key Lab Green Proc Chem Engn Shihezi 832003 Peoples R China;

    Shihezi Univ Engn Res Ctr Mat Oriented Chem Engn Xinjiang Bing Key Lab Mat Oriented Chem Engn Xinjiang Uygur Aut Sch Chem &

    Chem Engn Key Lab Green Proc Chem Engn Shihezi 832003 Peoples R China;

    Shihezi Univ Engn Res Ctr Mat Oriented Chem Engn Xinjiang Bing Key Lab Mat Oriented Chem Engn Xinjiang Uygur Aut Sch Chem &

    Chem Engn Key Lab Green Proc Chem Engn Shihezi 832003 Peoples R China;

    Shihezi Univ Engn Res Ctr Mat Oriented Chem Engn Xinjiang Bing Key Lab Mat Oriented Chem Engn Xinjiang Uygur Aut Sch Chem &

    Chem Engn Key Lab Green Proc Chem Engn Shihezi 832003 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

    adhesives; applications; functionalization of polymers; mechanical properties; polyurethane;

    机译：粘合剂;应用;聚合物的功能化;机械性能;聚氨酯;

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