Synthesis of reactive DOPO-based flame retardant and its application in rigid polyisocyanurate-polyurethane foam

• Published in: Polymer degradation and stability Vol. 197; p. 109852
• Main Authors: Qian, Xue, Liu, Qiang, Zhang, Laibao, Li, Hui, Liu, Jiwen, Yan, Shouke
• Format: Journal Article
• Language: English
• Published: London Elsevier Ltd 01.03.2022; Elsevier BV
• Subjects: Antifreeze solutions; calorimeters; Chemical synthesis; Cone calorimeters; diethylene glycol; energy-dispersive X-ray analysis; Esterification; Flame retardant; Flame retardants; Flame-retardant diol; foams; Fourier transforms; Free radicals; Gravimetric analysis; Infrared analysis; Isocyanates; oxygen; Phenanthrene; phosphates; Phosphorus; phosphorus content; Plastic foam; Polyisocyanurate; Polyurethane; Polyurethane foam; polyurethanes; Residues; Rigid polyurethane foam; Thermal degradation; Thermal stability; Vapor phases; Flame retardant; Rigid polyurethane foam; Polyisocyanurate; Flame-retardant diol

•A reactive low-molecular flame-retardant polyester diol based on DDP was synthetized.•The flame-retardant RPUF-PIR reached a high LOI value of 28.0 vol% with a 3.5 wt% phosphorus content and the NCO/OH ratio of 3.5.•The density and compressive strength of PIRs were improved with the content of phos...