Abstract The effect of zirconium phosphate (ZrP) on the fire resistance of aliphatic waterborne polyurethane (AWP)-based intumescent flame retardant coatings (IFRCs) has been preliminarily investigated by quantitative analysis including the cone calorimeter and pyrolysis kinetics of ZrP-containing AWP-based coating, respectively. It determines that an appropriate dosage (1 wt%) of ZrP in the AWP-based coating constitutes an improved fire resistance, evidenced by the fire growth index decreased from 0.49 to 0.32 kW m−2·s-1, and the risen fire performance index of 0.55 s m−2 kW-1 from 0.41 s m−2 kW-1. Because of the heat sink (Zr(HPO4)2⋅H2O→ZrP2O7) and catalytic charring of ZrP, the ZrP-containing AWP-based coating exhibits an enhanced flame resistance, evidenced by the formation of double-layer char residues. Furthermore, it clarifies that the 3D Jander model (n=2) mainly governs the whole pyrolysis process of the coating by modified Coats-Redfern integral method, the doped ZrP mainly makes the Eα of 310∼370 ℃ climb from 187.85 kJ mol-1 to 210.79 kJ mol-1, and the Eα during 95∼200 °C increases from 24.96 kJ mol-1 for S0 to 42.63 kJ mol-1. It provides a quantitative analysis of the flame-retarding mechanism of organic-inorganic hybrid coatings firstly.

中文翻译：

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阻燃胶合板用含ZrP脂肪族水性聚氨酯膨胀涂料的热解动力学

摘要 通过锥形量热仪和含 ZrP 的 AWP 基膨胀型阻燃涂料 (IFRCs) 的定量分析，初步研究了磷酸锆 (ZrP) 对脂肪族水性聚氨酯 (AWP) 基膨胀型阻燃涂料 (IFRCs) 耐火性能的影响。分别涂。它决定了 AWP 基涂层中适当剂量 (1 wt%) 的 ZrP 构成了改进的耐火性，证明火生长指数从 0.49 kW m-2·s-1 降低到 0.32 kW m-2·s-1，并提高了防火性能指数从 0.41 sm-2 kW-1 变为 0.55 sm-2 kW-1。由于热沉 (Zr(HPO4)2·H2O→ZrP2O7) 和 ZrP 的催化炭化，含 ZrP 的 AWP 基涂层表现出增强的阻燃性，双层炭残留物的形成证明了这一点。此外，阐明3D Jander模型(n=2)主要通过改进的Coats-Redfern积分法控制涂层的整个热解过程，掺杂的ZrP主要使310∼370 ℃的Eα从187.85 kJ mol-1上升到210.79 kJ mol-1，在 95∼200 °C 期间 Eα 从 S0 的 24.96 kJ mol-1 增加到 42.63 kJ mol-1。首次定量分析了有机-无机杂化涂料的阻燃机理。