The natural basalt fiber (BF) was incorporated into EVA composites with environmental‐friendly nickel alginate‐brucite based flame retardant (NiFR), to further improve the flame‐retardant effect and mechanical properties. The flame retardancy of EVA composites were characterized by LOI, UL 94, and cone test. With 55 wt% loading, 3BF/52NiFR had the highest LOI value of 31.9 vol.% in all fiber reinforced composites and pass UL 94V‐0 ratting. And comparing to 55B composite with untreated brucite, 3BF/52NiFR decreased peak of heat release rate by 47.8%, total heat release by 21.9%, and total smoke production by 35.5% and kept more residue 54.0% during cone test. Moreover, 3BF/52NiFR also enhanced the mechanical properties of composites by better compatibility with EVA matrix. BF/NiFR exert synergistic flame‐retardant effect major in promoting charring effect in condensed phase during combustion. The fire‐resisted and rigid BF into the char layer reinforced the intensity of protective barrier which prolonged the residence time of pyrolysis carbonaceous groups degraded from EVA matrix, resulting in less heat and smoke release.

中文翻译：

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天然玄武岩纤维用于海藻酸镍-褐铁矿基阻燃剂EVA复合材料改善防火安全和机械性能的作用

天然玄武岩纤维（BF）与环保型海藻酸镍-褐铁矿基阻燃剂（NiFR）结合到EVA复合材料中，以进一步提高阻燃效果和机械性能。EVA复合材料的阻燃性通过LOI，UL 94和锥形试验进行了表征。3BF / 52NiFR在55 wt％的负载下，在所有纤维增强复合材料中的LOI值最高，为31.9 vol。％，并且通过了UL 94V-0认证。与使用未经处理的水镁石的55B复合材料相比，在圆锥试验中，3BF / 52NiFR的放热峰值降低了47.8％，总放热降低了21.9％，总烟气降低了35.5％，并保留了更多的残渣54.0％。此外，3BF / 52NiFR还通过与EVA基体更好的相容性而增强了复合材料的机械性能。高炉/镍铁合金发挥协同阻燃作用，主要是促进燃烧过程中凝结相的炭化作用。炭层中的耐火且坚硬的BF增强了保护层的强度，从而延长了从EVA基质降解的热解碳质基团的停留时间，从而减少了热量和烟气的释放。