Nitrogen-Based FR

Nitrogen-Based FR

Melamine Pyrophosphate (MPP)

  • CAS No.67807-88-3
Melamine Pyrophosphate (MPP)
  • Chemical Formula: C₆H₉N₆P₂O₄
  • Molecular Weight: 281.2 g/mol
  • CAS Number: 67807-88-3
  • Appearance: White to off-white crystalline powder
  • Flame Retardant Type: Phosphorus-nitrogen-based, halogen-free

Key Flame Retardant Properties:

  • Phosphorus-Nitrogen Synergy: Combines the flame-retardant effects of both phosphorus and nitrogen, which act together to suppress combustion and promote char formation.
  • Endothermic Decomposition: MPP decomposes at higher temperatures, releasing non-flammable gases like ammonia and phosphoric acid, which help cool the material and prevent the spread of fire.
  • Promotes char Formation: Helps form a stable, protective char layer, acting as a physical barrier against heat and flame propagation.
  • Smoke Suppression: Reduces the generation of toxic smoke and gases during combustion.

Advantages:

  • Halogen-Free & Eco-Friendly: Non-toxic and safer for human health and the environment compared to halogenated flame retardants.
  • High Thermal Stability: Effective at elevated temperatures, making it suitable for various engineering plastics and materials.
  • Enhanced Flame Retardancy: Offers excellent flame-retardant performance even at low loadings.
  • Good Compatibility: Can be used with a wide range of polymers, including polyamides, polyesters, and polycarbonates.

Applications:

  • Plastics & Polymers: Especially effective in polyamides (PA6, PA66), polycarbonate (PC), and polyesters (PET, PBT).
  • Electrical & Electronics: Used in components like connectors, casings, and circuit boards, offering flame retardancy and electrical safety.
  • Automotive Parts: Suitable for flame-retardant automotive interior parts and under-the-hood components.
  • Consumer Goods & Appliances: Flame retardant in home appliances, mobile devices, and other electronic products.

Processing Considerations:

  • Particle Size & Dispersion: Fine particles improve dispersion and enhance flame retardant performance in polymers.
  • Loading Levels: Typically added at 5–15%, depending on the polymer matrix and the desired flame retardant properties.
  • Thermal Stability: Suitable for materials processed at temperatures below 300°C, as higher temperatures may lead to decomposition or loss of performance.