A novel ionic liquid-modified flake-NiNH₄PO₄·H₂O (IL-ANP) hybrid material was prepared using a mechanochemical method with weak interactions. Characterization methods, including scanning electron microscope, Fourier transform infrared, X-ray diffraction and thermogravimetric analysis indicated the successful synthesis of IL-ANP. The prepared IL-ANP was incorporated into epoxy resin (EP) to improve the flame retardancy and mechanical properties. The limiting oxygen index (LOI) and cone calorimeter tests showed that IL-ANP enhanced the flame retardancy of EP composites. The 6 part per hundred resin (phr) IL-ANP/EP achieved excellent flame retardancy with the LOI value of 30.3% (that of pure EP was 24.4) and a significant decrease in the peak heat release rate, total heat release rate and the maximum release rates of CO production. This is attributed to the synergistic effect of the condensed phase and gas phase. During combustion, IL-ANP generated an incombustible gas (ammonia gas), nickel phosphate and nickel phosphide. On one hand, the incombustible gas diluted the concentrations of the combustible gas and oxygen in the gas phase. On the other hand, the phosphorus compounds catalyzed the carbonisation of EP to form a stable char layer and accumulated on the char layer surface as a physical barrier to delay the heat release. Additionally, the IL-ANP/EP composites exhibited excellent tensile strength, elongation at break, and impact strength, owing to their good compatibility and dispersion.

一种新型离子液体改性片状NiNH ₄ PO ₄ ·H ₂O（IL-ANP）杂化材料是使用具有弱相互作用的机械化学方法制备的。扫描电子显微镜、傅里叶变换红外、X射线衍射和热重分析等表征方法表明IL-ANP的合成成功。将制备的 IL-ANP 掺入环氧树脂 (EP) 中以提高阻燃性和机械性能。极限氧指数 (LOI) 和锥形量热仪测试表明 IL-ANP 增强了 EP 复合材料的阻燃性。6 份/百份树脂 (phr) IL-ANP/EP 具有优异的阻燃性，LOI 值为 30.3%（纯 EP 为 24.4），峰值放热率、总放热率和CO 产生的最大释放率。这归因于凝聚相和气相的协同作用。在燃烧过程中，IL-ANP 产生不可燃气体（氨气）、磷酸镍和磷化镍。一方面，不可燃气体稀释了气相中可燃气体和氧气的浓度。另一方面，磷化合物催化EP的碳化形成稳定的炭层并在炭层表面积累作为延迟放热的物理屏障。此外，IL-ANP/EP 复合材料由于其良好的相容性和分散性，表现出优异的拉伸强度、断裂伸长率和冲击强度。不可燃气体稀释了气相中可燃气体和氧气的浓度。另一方面，磷化合物催化EP的碳化形成稳定的炭层并在炭层表面积累作为延迟放热的物理屏障。此外，IL-ANP/EP复合材料由于其良好的相容性和分散性，表现出优异的拉伸强度、断裂伸长率和冲击强度。不可燃气体稀释了气相中可燃气体和氧气的浓度。另一方面，磷化合物催化EP的碳化形成稳定的炭层并在炭层表面积累作为延迟放热的物理屏障。此外，IL-ANP/EP复合材料由于其良好的相容性和分散性，表现出优异的拉伸强度、断裂伸长率和冲击强度。