A novel flame-retardant composite material based on zinc alginate (ZnAlg) and nano-cuprous oxide (Cu O) was prepared through a simple, eco-friendly freeze-drying process and a sol-gel method. The composites were characterized and their combustion and flammability behavior were tested. The composites had high thermal stability and achieved nearly non-flammability with a limiting oxygen index (LOI) of 58. The results show remarkable improvement of flame-retardant properties in the ZnAlg/Cu O composites, compared to ZnAlg. Furthermore, the pyrolysis behavior was determined by pyrolysis–gas chromatography–mass spectrometry (Py-GC-MS) and the flame-retardant mechanism was proposed based on the combined experimental results. The prepared composites show promising application prospects in building materials and the textile industry.
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机译：通过简单，环保的冷冻干燥工艺和溶胶-凝胶法制备了一种基于藻酸锌（ZnAlg）和纳米氧化亚铜（Cu O）的新型阻燃复合材料。对复合材料进行了表征，并测试了它们的燃烧和可燃性。该复合材料具有很高的热稳定性，并达到极限氧指数（LOI）为58时几乎不易燃。结果表明，与ZnAlg相比，ZnAlg / Cu O复合材料的阻燃性能得到了显着改善。此外，通过热解-气相色谱-质谱法（Py-GC-MS）确定了热解行为，并结合实验结果提出了阻燃机理。制备的复合材料在建材和纺织工业中显示出广阔的应用前景。
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