Melamine Polyphosphate (MPP)
Featured inFlame Retardants
Melamine polyphosphate (MPP) is a halogen-free, nitrogen–phosphorus synergistic flame retardant offering excellent thermal stability up to 320 °C, making it particularly suitable for high-processing-temperature engineering plastics. It functions by releasing non-combustible gases and promoting char formation simultaneously, providing both gas-phase and condensed-phase fire suppression. MPP is a preferred alternative to older melamine derivatives in glass-fiber-reinforced PA6 and PA66 systems.
Технические характеристики
| appearance | White powder |
| moisture content (%) | <0.3 |
| nitrogen content (%) | 41–43 |
| phosphorus content (%) | 13–14 |
| particle size D50 (µm) | 5–15 |
| thermal decomposition onset (°C) | >320 |
Области применения
- Glass-fiber-reinforced polyamide PA6 and PA66 (UL94 V-0 at 25–30% loading)
- Thermoplastic polyurethane (TPU) and polyester (PBT/PET) compounds
- Epoxy resin laminates and printed circuit board prepregs
- Polyolefin cable and wire compounds requiring halogen-free FR certification
- Intumescent coatings as acid and gas source synergist with APP
Особенности продукта
- High thermal stability (>320 °C) compatible with engineering plastics processing temperatures
- Synergistic N–P mechanism delivers both gas-phase dilution and condensed-phase char barrier
- Halogen-free and low-smoke, compliant with IEC 60332, EN 45545, and UL94 V-0 standards
- Low moisture absorption prevents processing issues and maintains long-term electrical properties
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