The complex of zinc phosphate and 3-amine-1,2,4-triazole (ZN3AT) was synthesized by a one-pot reaction and used as an intumescent flame retardant (IFR) for flexible poly(vinyl chloride) (PVC). The thermal properties and fire behaviour of flexible PVC with 20 wt% of ZN3AT were investigated and compared with unmodified PVC and PVC with commercial IFR. The thermal stability and burning behaviour were evaluated by thermogravimetric analysis (TGA) as well as cone calorimetry and horizontal burning tests. Furthermore, the analysis of volatile products evolved during the thermal decomposition and burning was performed using TGA and steady state tube furnace, both coupled with FT-IR. PVC containing developed flame retardant exhibits the lowest total heat release and smoke emission of all investigated samples. Materials analysis supplemented with analysis of their mechanical and thermomechanical properties shows that despite the high concentration of the IFR its incorporation did not strongly influence the properties of final products in comparison to pure PVC.

磷酸锌和3-胺-1,2,4-三唑（ZN3AT）的配合物通过一锅法合成，并用作柔性聚氯乙烯（PVC）的膨胀型阻燃剂（IFR）。研究了具有20 wt％ZN3AT的柔性PVC的热性能和防火性能，并将其与未改性的PVC和具有商业IFR的PVC进行了比较。通过热重分析（TGA）以及锥形量热法和水平燃烧测试评估了热稳定性和燃烧行为。此外，使用TGA和稳态管式炉结合FT-IR对热分解和燃烧过程中产生的挥发性产物进行了分析。在所有研究样品中，含有开发的阻燃剂的PVC表现出最低的总热量释放和烟气排放。