Long-term durability and flame retardancy for outdoor wood : Multifunctional enhancement using phenol-formaldehyde resin and monoguanidine phosphate salt
Wood's flammability, low dimensional stability, and poor fungal resistance limit its application. In this study, Scots pine sapwood (Pinus sylvestris L.) was treated with a low-molecular-weight phenol–formaldehyde (PF) resin and a monoguanidine phosphate flame retardant (FR) to achieve multifunctional enhancement. Differential scanning calorimetry confirmed no interference of FR with PF curing, wh
