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首页> 外文期刊>Journal of coatings technology and research >Hybrid organic/inorganic coatings produced using a dual-cure mechanism
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Hybrid organic/inorganic coatings produced using a dual-cure mechanism

机译：使用双重固化机理生产的有机/无机混合涂料

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摘要

A coating precursor containing both acry-late functionality and trimethoxysilane functionality was produced by reacting bisphenol-A glycerolate diacrylate with 3-isocyanatopropyltimethoxysilane. With this precursor, two different crosslinked networks can be produced. A polyacrylate network can be produced using a radiation-cure mechanism while a polysiloxane network can be produced by hydrolysis and condensation reactions involving the trimethoxysilane groups. The objective of the study was to determine the utility of this dual-cure system for generating rapid-cure coatings for corrosion protection. Coating properties were determined as a function of cure conditions. The results of the study showed that the formation of siloxane crosslinks was significantly hindered by the crosslinked network induced by the UV-curing process. Even though the overall conversion of trimethoxysilane groups to siloxane crosslinks was relatively low, coating barrier properties were significantly enhanced and coating free volume reduced. At ambient conditions, additional crosslink-ing occurring through siloxane bond formation increased within the first 4 days after UV-curing. Beyond this period, siloxane bond formation remained unchanged as did coating properties.
机译：通过使双酚A甘油二酸酯二丙烯酸酯与3-异氰酸根合丙基三甲氧基硅烷反应，制备同时包含丙烯酸酯官能团和三甲氧基硅烷官能团的涂料前体。使用该前体，可以产生两个不同的交联网络。可以使用辐射固化机理来生产聚丙烯酸酯网络，而可以通过涉及三甲氧基硅烷基团的水解和缩合反应来生产聚硅氧烷网络。该研究的目的是确定这种双固化系统在产生用于防腐的快速固化涂层中的实用性。确定涂料性能是固化条件的函数。研究结果表明，紫外线固化过程诱导的交联网络显着阻碍了硅氧烷交联的形成。即使三甲氧基硅烷基团向硅氧烷交联的总转化率相对较低，涂层的阻隔性能仍显着提高，无涂层体积减小。在环境条件下，紫外线固化后的前4天内，通过硅氧烷键的形成发生的其他交联增加。在这段时间之后，硅氧烷键的形成和涂层性能保持不变。

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  • 来源
    《Journal of coatings technology and research》 |2012年第4期|p.423-431|共9页
  • 作者

    Jie He; Bret J. Chisholm; Bret A. Mayo; Hanzhen Bao; Jared Risan; David A. Christianson; Crystal L. Rafferty;

  • 作者单位

    The Center for Nanoscale Science and Engineering,North Dakota State University, 1735 Research Park Drive,Fargo, ND 58102, USA;

    Department of Coatings and Polymeric Materials, North Dakota State University, 1735 Research Park Drive,Fargo, ND 58102, USA;

    The Center for Nanoscale Science and Engineering,North Dakota State University, 1735 Research Park Drive,Fargo, ND 58102, USA;

    Department of Coatings and Polymeric Materials, North Dakota State University, 1735 Research Park Drive,Fargo, ND 58102, USA;

    The Center for Nanoscale Science and Engineering,North Dakota State University, 1735 Research Park Drive,Fargo, ND 58102, USA;

    The Center for Nanoscale Science and Engineering,North Dakota State University, 1735 Research Park Drive,Fargo, ND 58102, USA;

    The Center for Nanoscale Science and Engineering,North Dakota State University, 1735 Research Park Drive,Fargo, ND 58102, USA;

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

    hybrid organic/inorganic coatings; UV-curable coatings; dual-cure mechanism; sol-gel;

    机译：有机/无机混合涂料;紫外线固化涂料;双重固化机制;溶胶凝胶;

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