Synergistic design of La-doped Bi2Fe4O9@polypyrrole@polyurethane foam composites for integrated electromagnetic wave absorption, fire safety, and thermal insulation

Key Points

• Electromagnetic wave absorption is enhanced while maintaining fire safety and thermal insulation in the composites.
• The study shows significant improvements in material properties with La-doped Bi2Fe4O9 and polypyrrole components.
• Analysis of composite materials reveals synergistic benefits for industrial applications, combining multiple protective features.
• These findings highlight the potential for multi-functional materials in advanced engineering applications.