Upcycling of Saline Lake Magnesium into Functionalized Si-MgO for Synergistic Fire-Safe PVC: A Waste-to-Wealth Strategy Coupling Catalytic Charring and Physical Insulation

Key Points

• This research aims to develop a halogen-free flame retardant system for PVC to improve fire safety without compromising mechanical properties.
• Developed a synergistic flame retardant system combining catalytic charring and physical insulation.
• Conducted material analysis to assess fire safety performance and mechanical properties of PVC with the new approach.
• Compared results with traditional flame retardants.
• The new flame retardant system significantly improved fire resistance of PVC with a low additive amount.
• Mechanical properties were maintained compared to those treated with traditional flame retardants.
• Enhanced charring behavior resulted in better physical insulation during combustion.