PAADP-20 is a halogen free organic phosphonate flame retardant masterbatch designed for high-temperature engineering plastics. It provides ≥17.5 percent phosphorus, strong char-forming efficiency, and excellent thermal stability with decomposition above 350 °C. Its formulation delivers low smoke, high CTI performance, and minimal impact on mechanical strength. PAADP-20 supports UL94 V-0 ratings at low addition levels in PA, PBT, PET, polyester alloys, and glass-fiber-reinforced systems.
• High phosphorus content (≥17.5 percent) provides strong char-forming flame retardancy.
• Thermal stability ≥350 °C supports high-shear, high-temperature polymer processing.
• Halogen-free chemistry produces low smoke and low toxicity emissions.
• High CTI performance enables use in demanding electrical and electronic components.
• Typical 20 percent dosage achieves UL94 V-0 ratings in multiple engineering polymers.
• Masterbatch form ensures clean handling, low dust, and consistent dosing.
• Retains tensile and impact properties with good colour stability.
• Compatible with a broad range of engineering plastics and polyester-based systems.
• Appearance: White cylindrical pellets (~6 mm).
• Phosphorus content: ≥17.5 percent.
• Moisture content: ≤0.4 percent.
• Water solubility (25 °C): 1.6 g/L.
• Packing density: 0.4–0.6 g/cm³.
• 1 percent decomposition temperature: ≥350 °C.
• Thermal cracking temperature: ≥350 °C (N₂, 20 °C/min).
• Halogen content: None.
• Recommended addition levels:
• PA6 / PA66: 15–20 percent.
• PBT / PET: 20 percent.
• PA GF systems: 18–22 percent.
• Polyester alloys: 15–20 percent.
• Electrical and electronics: Connectors, switches, terminal blocks, housings, bobbins, circuit protection parts.
• Automotive: Under-hood components, sensor housings, charge controllers, fuse boxes, PA-based structural parts.
• Industrial and mechanical: High-temperature gears, pump parts, engineering components.
• Consumer appliances: High-heat structural components and internal parts.
• Telecom and 5G: High-CTI connectors, fibre-optic brackets, RF housings.
• Sustainable engineering plastics: PET/PBT recycled blends and polyester composites.
• Compatible polymers: PA6, PA66, PPA, PBT, PET, PTT, TPEE, polyester alloys (PBT/PET, PET/ABS, PBT/PC).
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