Fire safety issues have attracted much attention since they cause enormous loss of lives and properties. In this study, the sustainable aluminophosphate (AP) adhesive is developed as a fire retardant for improving the fire performance of medium-density fiberboard (MDF). The properties of AP adhesive and AP-based MDF were evaluated based on a scanning electron microscope, thermogravimetric analysis, X-ray diffraction, X-ray photoelectron spectroscopy, and cone calorimetry. The thermostability and fire performance of MDF are significantly improved by the deposition of the AP inorganic layer on the wood fibers surface, which could protect wood fibers from further oxidation and take away part of the heat. Compared to control sample (UF sample), the pkHRR (151.7 kW m⁻²), THR (66.0 MJ m⁻²), TTI (21 s), and mean EHC (14.6 MJ kg⁻¹) of AP-based MDF was reduced by 52.7%, 39.0%, 41.7%, and 32.8%, respectively. Also, the existence of the AP inorganic layer is beneficial to netting the solid phase and volatile flammable components in char residue of MDF, resulting in large mass loss rate, off-gases (CO and CO₂) release and smoke suppression properties. Therefore, AP could improve the fire performance of MDF.

消防安全问题引起了巨大的生命和财产损失，因此备受关注。在这项研究中，开发了可持续的磷酸铝（AP）粘合剂作为阻燃剂，以改善中密度纤维板（MDF）的防火性能。基于扫描电子显微镜，热重分析，X射线衍射，X射线光电子能谱和锥形量热法评估了AP粘合剂和基于AP的MDF的性能。通过在木材纤维表面上沉积AP无机层，可以显着改善MDF的热稳定性和防火性能，这可以保护木材纤维免受进一步的氧化并带走部分热量。与对照样品（超滤样品）相比，pkHRR（151.7 kW m ^-2），THR（66.0 MJ m ^-2），TTI（21 s）和基于AP的MDF的平均EHC（14.6 MJ kg ^-1）分别降低了52.7％，39.0％，41.7％和32.8％。同样，AP无机层的存在有利于使MDF炭残渣中的固相和易挥发易挥发成分成网，从而导致大量的质量损失率，废气（CO和CO ₂）释放以及抑烟性。因此，AP可以改善中密度纤维板的防火性能。