Flame Retardants, Red Phosphorus

FRP-750A Microencapsulated Red Phosphorus Masterbatch

FRP-750A is a high-concentration microencapsulated red phosphorus flame retardant masterbatch developed for engineering plastics that require strong flame performance, low smoke and long-term mechanical stability. The formulation uses a new-generation compatibilizer carrier and precision twin-screw extrusion to deliver excellent dispersion, low phosphine release and stable processing behaviour. With ≥70 percent red phosphorus content, FRP-750A achieves UL94 V-0 at 2.0 mm using only 7–9 percent addition while maintaining structural strength and surface quality in demanding applications.

Attributes

Key Features and Benefits

Achieves UL94 V-0 at 2 mm with only 7–9 percent addition.
Kindle temperature ≥360 °C supports high-temperature nylon and polyester processing.
Microencapsulation reduces phosphine release and blooming.
Fine particle size (~10 μm) improves melt dispersion and mould surface finish.
High mechanical integrity with minimal impact on tensile, flexural and impact strength.
New-material compatibilizer carrier improves flow, resin adhesion and distribution.
Low smoke and halogen-free system compliant with RoHS and REACH.
Smooth processing behaviour with stable extrusion and mould filling.

Specifications

Technical Highlights

Appearance: Red masterbatch pellets
Flame-retardant (red phosphorus) content: ≥70 percent
Carrier: High-compatibility polymer system
Density: 1.4–1.7 g/cm³ (ASTM D792)
Moisture content: ≤0.5 percent (ASTM D570)
Kindle temperature: ≥360 °C
Melting temperature: ~140 °C (DSC)
Particle size: ~10 μm
Impact strength: ~18 × 10³ kPa (ISO 179)
Recommended addition: 7–9 wt percent for UL94 V-0 (2 mm)
Compatible polymers: PA6, PA66, PBT, PET, PP, Silastic blends

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Electrical & Electronics – Connectors, terminal blocks, switches, circuit protection components
Automotive – Under-the-hood PA components, housings, engine-bay electrical modules
Wire & Cable – LSZH insulation and sheathing compounds
Consumer Appliances – Power tools, adapters, chargers, protective housings
Construction – Electrical conduits, fittings, flame-resistant profiles and panels
Industrial Compounding – Engineering resin formulations, PA/PBT masterbatch production
Compatible Polymer Systems – PA6 / PA66, PBT / PET, PP, Silastic and elastomer-modified systems