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首页> 外文期刊>Journal of Applied Polymer Science >Modification of ramie fabric with a metal-ion-doped flame-retardant coating
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Modification of ramie fabric with a metal-ion-doped flame-retardant coating

机译：掺金属离子阻燃涂层的麻织物改性

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Transition-metal-ion-doped flame-retardant coatings were constructed on the surface of ramie fabrics by a layer-by-layer (LbL) assembly technique to investigate possible cooperative actions that could improve the fabric's flame-retardant efficiency. We found that these functional coatings, consisting of poly(vinylphosphonic acid) (the anionic layer) and branched polyethylenimine/cupric or zinc ions (the cationic layer), improved the fire retardancy of the ramie fabrics remarkably. Attenuated total reflectance-Fourier transform infrared (FTIR) spectroscopy and energy dispersive X-ray spectroscopy demonstrated the successful LbL assembly process and the incorporation of metal ions into the coating. Thermogravimetric analysis coupled with FTIR spectrometry, vertical flame testing, and microscale combustion calorimetry confirmed the improved thermal stability and reduced flammability of the coated ramie fabrics. All of the results show that the metal-ion-doped flame-retardant coatings not only dramatically increased the residues but also retained the original weave structure and fiber morphology of ramie fabrics well. The enhanced flame-retardant efficiency may have been caused by the lower decomposition temperature of the flame-retardant coating, as promoted by cupric and zinc ions, and as a result, may have helped the flame-retardant activity to take place earlier.
机译：通过层层（LbL）组装技术在of麻织物的表面构建了过渡金属离子掺杂的阻燃涂层，以研究可能的协同作用，以提高织物的阻燃效率。我们发现，这些功能性涂层由聚（乙烯基膦酸）（阴离子层）和支链聚乙烯亚胺/铜或锌离子（阳离子层）组成，可显着提高the麻织物的阻燃性。衰减全反射傅里叶变换红外（FTIR）光谱和能量色散X射线光谱证明了成功的LbL组装过程以及将金属离子掺入涂层中。热重分析与FTIR光谱，垂直火焰测试和微量燃烧量热法相结合，证实了涂层coated麻织物的热稳定性得到改善，可燃性降低。所有结果表明，掺金属离子的阻燃涂料不仅显着增加了残留物，而且还很好地保留了of麻织物的原始组织结构和纤维形态。阻燃效率的提高可能是由于铜和锌离子促进了阻燃涂层的较低分解温度所致，因此，可能有助于阻燃活性更早地发生。

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